СПОСОБ ДЕНИТРИФИКАЦИИ БАЙПАСНЫХ ОТРАБОТАВШИХ ГАЗОВ УСТАНОВКИ ДЛЯ ПРОИЗВОДСТВА ЦЕМЕНТНОГО КЛИНКЕРА

Изобретение относится к установке по производству цементного клинкера и процессу денитрификации байпасных отработанных газов в этой установке. Установка содержит ротационную трубчатую печь, которая через впускную камеру соединяется с печью предварительного нагрева, и керамическое фильтрующее устройство, в котором присутствует катализатор. Впускная камера, где отбирается байпасный отработанный газ, имеет устройство охлаждения отработанных газов, а также устройство для введения аммиак-, мочевина- и/или аммонийсодержащих веществ в охлаждаемый отработанный газ. Процесс денитрификации байпасных отработанных газов включает охлаждение отработанных газов до температуры в диапазоне от 260°С до 400°С в устройстве охлаждения, введение аммиак-, мочевина- и/или аммонийсодержащих веществ в охлаждаемый отработанный газ, введение охлаждаемого отработанного газа в керамическое фильтрующее устройство. Обеспечивается эффективная денитрификация всего объема отработанных газов и отделение от отработанных газов ...

БЕСЦЕМЕНТНОЕ ВЯЖУЩЕЕ

Изобретение относится к промышленности строительных материалов. Технический результат: увеличение прочности и огнестойкости бесцементного вяжущего и бетона на его основе. Бесцементное вяжущее, включающее золу-унос и отработанный формовочный песок литейного производства, содержит золу-унос ТЭС высококальциевую и отработанный формовочный песок литейного производства, прошедший магнитную обработку по отделению пригарков, с содержанием кремнезема выше 90% и дополнительно продукт высокоглиноземистый с содержанием оксида алюминия выше 80% - отход абразивного производства, при следующем соотношении компонентов, мас. %: зола-унос ТЭС высококальциевая 60-80, указанный формовочный песок литейного производства 10-30, указанный продукт высокоглиноземистый 5-10, при удельной поверхности всех трех компонентов от 600 до 750 м2/кг. 3 табл.

Способ получения и состав белитового клинкера

Предложенная группа изобретений относится к способу получения белитового клинкера и составу белитового клинкера. Способ включает приготовление сырьевой смеси, содержащей карбонатный компонент в количестве 89,2-90,2 мас.% и глинистый компонент в количестве 1,1-1,2 мас.%, первичный совместный помол карбонатного компонента и глинистого компонента в мельнице мокрого самоизмельчения с получением грубого шлама, тонкое измельчение грубого шлама в трубных мельницах совместно с железистыми добавками в количестве 2,5-2,6 мас.%. Тонкое измельчение проводят до остатка на сите №008 - 7,0±2,0%, на сите №020 - 3,0±1,0%. Далее шлам перемешивают и корректируют в шламбассейнах путем добавления глиноземного компонента в количестве 1,1-1,2 мас.% и кремнеземного компонента в количестве 4,8-6,0 мас.%. Обжиг шлама проводят во вращающейся печи путем его нагрева до температуры 1350±10°C с последующим охлаждением и получением белитового клинкера. Клинкер имеет следующий минералогический состав, мас.%: C3S - 38-48 ...

Способ получения высокоглиноземистого цемента

Изобретение относится к промышленности строительных материалов и может быть использовано при изготовлении высокоглиноземистого и ряда других огнеупорных цементов. Целью изобретения является улучшение качества цемента за счет снижения остаточного содержания углерода в клинкере. Шлак металлического хрома смешивают в смесителе с известью и 5-8% кокса. Приготовленную шихту равномерно подают в электродуговую печь и проплавляют при 1930-2020°С в течение 70-130 мин. При этом в зависимости от содержания CAO в расплаве температуру T и время плавки Τ задают при следующем их соотношении : /CAO/-2 ≤ T/Τ ≤ /CAO/+2. Затем клинкерный расплав сливают в изложницу. Охлажденный клинкер дробят и размалывают до уд. поверхности не менее 400 м2/кг. Прочность цемента составляет 60-70 МПа. 1 табл.

VERFAHREN UND VORRICHTUNG ZUM TRANSPORT VON GASEN

VERFAHREN UND VORRICHTUNG ZUR VERWENDUNG VON HOCHOFENSCHLACKEN BEI DER ZEMENTHERSTELLUNG

Improvements relating to the method of producing portland cement

... 519,018. Cement kilns. FULLER CO. Aug. 12, 1938, No. 23889. Convention date, Dec. 1, 1937. Drawings to Specification. [Class 51 (ii)] A method of producing Portland cement in a rotary kiln consists in injecting a stream of fuel surrounded by a stream of preheated secondary air into the discharge end of the kiln and directing the streams so that they do not impinge on the clinker which is discharged in a partly molten state in the form of an inclined bed which is advanced continuously while undergoing agitation. Air is forced through the clinker bed to effect cooling thereof, the cooling air being utilized wholly or in part as secondary air. The air passes into the clinker bed in the form of vertical and horizontal jets the location of which is continuously changing at different levels. The method is carried out in apparatus described in Specification 519,057.

Application of water requirement measurements to approximate specific surface area

Methods of wellbore cementing are provided. A method of analyzing a solid particulate including: measuring a water requirement of the solid particulate; and determining an approximation of specific surface area of the solid particulate from the water requirement.

Technique for handling and transporting in making cement

Cement is made by forming a slurry of sized and mixed cement raw materials, transporting the slurry to a region of use and heating the slurry. The transportation may be shipping. The slurry may contain a thinner e.g. ammonium lignosulphonate.

Grinding plants

... 1, 040, 212. Tube mills; grinding cement. F. L. SMIDTH & CO., A.S. May 20, 1964 [May 31, 1963], No. 21931/63. Heading B2A. A method of producing cement ready for packing into bags comprises grinding cement clinker in a mill, cooling the ground cement after it leaves the mill by carrying it in an upward current of air, separating it from the air when cooled and delivering at least some of the ground separated cement to a discharge conveyer. Ground cement from a mill 1, Fig. 1, is conveyed by means of a pipe 8 and warm conveyer 9 to a cooling riser pipe 11 the lower end of which is open to the atmosphere. The suspended cement particles are separated from the air in a cyclone 13 and passed through a pipe 27 to the feed tank of a discontinuous pneumatic conveyer 30. The air heated by the cement is conveyed by a fan 12 to a dust filter 16 the separated dust from which is caught by worm conveyer 18 and led into conveyer 9. Pipe 8 has an extension 20 through which pass water vapour and cement ...

DESULPHURISING FLUE GAS

Process for the industrial manufacture of artificial portland cement which rapidly hardens and has very high resistances

... 237,182. Hendrickx, J. J., and Etablissements Poliet et Chausson. Feb. 23, 1925. Cements, Portland, processes for making.- The fuel supplied to a rotary kiln is mixed with sufficient lime or limestone to convert its ash into a cement corresponding in composition to that produced in the kiln, with the result that a homogeneous product is obtained.

Device for the heat transfer or the implementation of chemical reactions.

PROCEDURE AND DEVICE FOR THE SEPARATION OF DUST SUSPENDED PARTICLES FROM A HOT GAS STREAM

ZEMENT UND VERFAHREN ZU SEINER HERSTELLUNG

VERFAHREN ZUM HERSTELLEN VON MERGELSCHLACKEN

PROCEDURE AND MEANS FOR THE PRODUCTION OF POWDERY MATERIAL USABLE FUER THE PRODUCTION OF HYDRAULIC BONDING AGENTS.

PRODUCTION OF HYDRAULIC BONDING AGENTS.

Device for warming up and/or drying powdered materials, in particular cement raw meal

Procedure for the utilization of the mud and device resulting in a plant for cement production with the dedusting for its execution

PROCEDURE AND DEVICE FOR THE USE OF STEEL CINDERS IN CEMENT PRODUCTION

Procedure for the production of hydraulic bonding agents

Refractory fibrous construction bodies

PRODUCTION OF CALCIUM SILICATE

FABRICATION DU CIMENT

Verfahren und Vorrichtung zur Ausnutzung des bei der Zementherstellung im Nassverfahren aus dem Schlamm entstehenden Wasserdampfes.

Verfahren und Einrichtung zur Herstellung einer als Bindemittel für Bauzwecke und als Rohmischung für die Erzeugung von Bauformteilen geeigneten Mischung.

Procédé de traitement d'une matière pulvérulente ou granuleuse

Procédé de fabrication de produits moulés contenant un liant à base de laitier broyé et produit moulé obtenu par ce procédé.

Procédé de fabrication de ciment artificiel.

Verfahren zur Herstellung hydraulischer Bindemittel

Procédé et dispositif pour la récupération et l'utilisation des matières fines et friables contenues dans la masse sortant des fours de cuisson dans la production des liants servant à la fabrication des mortiers et bétons.

Procédé de fabrication de liants hydrauliques.

Echangeur de chaleur pour une matière pulvérulente ou granuleuse

Verfahren und Vorrichtung zur Wiedergewinnung und Aufbereitung von Staub aus Abgasen

Verfahren zur Herstellung von Zement

Verfahren zum Wärmeaustausch zwischen dem staubförmigen Rohgut und den Abgasen eines Zementdrehofens und Vorrichtung zur Durchführung dieses Verfahrens

Procédé pour préparer, sans cuisson des constituants, un ciment en poudre

Vorrichtung an einem Drehrohrofen zum Erwärmen bzw. Trocknen von pulverförmigen Materialien

Vorrichtung zum Wärmeaustausch zwischen zwei Medien

Dispositif de refroidissement et de dépoussiérage d'une installation comprenant un four comportant à une extrémité un brûleur produisant un flux de gaz chauds, et à l'autre, un distributeur de matériaux à cuire

Verfahren zur Zerkleinerung von Feststoffen

Mahl- und Sicht-Anlage, insbesondere für Zement

Dispositif de refroidissement et de dépoussiérage d'une installation comprenant un four comportant à une extrémité un brûleur produisant un flux de gaz chauds, et à l'autre, un distributeur de matériaux à cuire

Verfahren zur Entstaubung von Abgasen aus einer Anlage für Zementfabrikation

Procédé de traitement thermique de liants hydrauliques

Verfahren zur Herstellung hydraulischer Bindemittel

Procédé de fabrication d'un liant hydraulique non corrosif à prise régularisée et liant obtenu par ce procédé

PROCEDURE AND PLANT FOR THE SEPARATION OF DUST SUSPENDED PARTICLES FROM A HOT GAS STREAM.

SYSTEM FOR THE TRANSFORMATION IN CLINKER PORTLAND OF HUMID MIRES OF RAW MATERIALS FROM CONCRETE.

Vorrichtung und Verfahren zur Herstellung von Zementklinker.

Vorrichtung und Verfahren zur Herstellung von Zementklinker mit den Schritten: Brennen von Rohmaterial zu Zementklinker in einem Ofen (2), Vorwärmen des Rohmaterials mit Rauchgasen des Ofens (2) in einem Vorwärmer (3), Entstauben der aus dem Vorwärmer (3) ausgetretenen Rauchgase und Entsticken der entstaubten Rauchgase in einer Entstickungsstufe (5), insbesondere in einer SCR-Anlage, wobei die aus dem Vorwärmer (3) ausgetretenen Rauchgase mit einer Temperatur von mehr als 260 °C, vorzugsweise von 300 °C bis 400 °C, insbesondere im Wesentlichen 350°C, in einem Heißgasfilter (6) entstaubt und mit im Wesentlichen derselben Temperatur von dem Heißgasfilter (6) bis zur Entstickungsstufe (5) geleitet werden.

PRODUCTION OF HYDRAULIC BINDERS

Process for the finely divided matter sintering

Apparatus and process of pre-heating by hot gases with use of an electrostatic field

Device for the preliminary matter heating out of powder or with fine grains, in particular of rough cement powder

PROCEDE ET DISPOSITIF POUR LE TRANSPORT DE GAZ

Procédé et dispositif permettant de transporter des gaz charges de poussière, en particulier de l'air chaud chargé de poussière de clinker, au moyen d'un appareil à jet dont le jet propulseur est produit par combustion pulsée au moyen d'un pulsoréacteur. L'oxygène comburant nécessaire au fonctionnement du pulsoréacteur est empruntée, lorsque l'air chaud à transporter est chargé de poussière à des taux mu =< 0,2, par l'intermédiaire de valves aérodynamiques à l'air chaud et, lorsque l'air à transporter est chargé de poussière à des taux mu > 0,2, à partir de l'atmosphère ou d'oxygène sensiblement pur ou d'air enrichi en oxygène. L'invention est applicable, en particulier, à l'industrie du ciment.

PROCESS OF HYDRAULIC PRODUCTION OF CEMENT AND ALUMINA OF HIGH PURITY

Process for the finely divided matter sintering

Cement clinker prodn. at low temp. - by forming alkaline earth chloride from carbonate and hydrolysing

PROCESS OF HYDRAULIC PRODUCTION OF CEMENT AND ALUMINA OF HIGH PURITY

Transporting unfired cement raw materials - in the form of a slurry of raw materials in ship hold to site where it is fired

PORTLAND CEMENT OBTAINED FROM ALTERNATIVE STARTING MATERIALS

The invention relates to a Portland cement composition meant to be used in the field of building materials. According to the invention, the composition comprises: portland clinker, brucite lime, gypsum and, possibly, power plant slag of volcanic tuff and ensures an initial setting time of at least 75 min and a 2-day compression strength of at least 10 Mpa.

LOW BUOYANCY CELLULAR CONCRETE

Implementations described and claimed herein provide a process for creating a low-buoyancy cellular concrete that may include cement, water, and various surfactants including hydrophilic additives to produce the low-buoyancy cellular concrete. The low-buoyancy cellular concrete wet mix maintains its cellular properties while it is placed and cures. After curing, water may be absorbed into the low buoyancy cellular concrete via a combination of physical and chemical characteristics. An open cell structure of capillaries facilitates wicking action of water into the low buoyancy cellular concrete via capillary channeling (through the cementitious matrix between the micro-bubbles, and in some cases into the micro-bubbles as well). Further, the hydrophilic additive in the foam surfactant facilitates absorption of water into the low buoyancy cellular concrete through diminished surface tension at an interface of the cellular concrete and a body of water and at and between the microbubbles. 1. A cured low buoyancy cellular concrete comprising:cement distributed throughout the low buoyancy cellular concrete;aggregate distributed throughout the low buoyancy cellular concrete; and{'sup': 3', '3, 'a foaming agent residue that defines a distributed array of micro-bubbles within the low buoyancy cellular concrete, wherein a density of the low buoyancy cellular concrete is greater than 930 kg/mwhen water is allowed to absorb into the low buoyancy cellular concrete and less than 930 kg/mwhen water is allowed to exude from the low buoyancy cellular concrete.'}2. The cured low buoyancy cellular concrete of claim 1 , wherein the water displaces air within the micro-bubbles when water is allowed to absorb into the low buoyancy cellular concrete and air displaces water within the micro-bubbles when the water is allowed to exude from the low buoyancy cellular concrete.3. The cured low buoyancy cellular concrete of claim 1 , wherein water is drawn into the cured low buoyancy cellular ...

Refractory fiber structures

The invention relates to fiber structures in the form of refractory light-weight moldings. These fiber structures exhibit the advantage that they do not contain, or contain virtually no harmful fibers, and/or that such fibers that might still exist in the fiber structures can be readily decomposed by water or body fluids. Nevertheless, the fiber structures exhibit the advantageous thermal and mechanical properties of conventional light-weight moldings. The fiber structures according to the invention are manufactured using inorganic fibers, wherein at least 90% by weight of each fiber comprises 20-50% by weight of CaO and 50-80% by weight of Al2O3. The rest comprises a maximum of 10% by weight of typical impurity oxides. Water or a water-containing liquid is used as the charge liquid, and conventional refractory additives may also be added to the mixture of fibers and water to be molded.

Method for the desulfurization of flue gas of a firing system

A method for the desulfurization of a calcium containing flue gas stream from a firing system such as a cement making plant wherein at least partially deacidified, hot raw cement meal is added to the flue gas at selected points to absorb the sulfur oxides to the calcium present in the gas. The preferred form of the invention comprises suspending the deacidified raw cement meal in the flue gas in the form of a cloud of airborne dust, and thereafter separating the dust from the flue gas after the sulfur oxides have been bonded to the calcium.

METHOD FOR PRODUCING MARL SLAGS

СПОСОБ И УСТАНОВКА ДЛЯ ПОДОГРЕВА ПОРОШКООБРАЗНОГО ИЛИ ПЫЛЕВИДНОГО МАТЕРИАЛА

Изобретение относится к области изготовления строительных материалов. Способ подогрева порошкообразного или пылевидного материала в циклонном подогревателе включает, по меньшей мере, два циклонных участка, каждый из которых включает вертикальный трубопровод и циклон. При этом часть материала, который подают, по меньшей мере, в один циклонный участок, вводят в первую часть вертикального трубопровода и нагревают от температуры максимум 450°С до температуры, по меньшей мере, 550°С на протяжении указанного циклонного участка. Оставшийся материал, который подают в тот же самый циклонный участок, вводят в последнюю часть указанного вертикального трубопровода. Установка для осуществления способа включает циклонный подогреватель с, по меньшей мере, двумя циклонными участками, каждый из которых включает вертикальный трубопровод и циклон. Технический результат заключается в уменьшении потребления энергии и утилизации тепла отходящих газов. 2 н. и 6 з.п. ф-лы, 5 ил.

СПОСОБ ПРОИЗВОДСТВА КЛИНКЕРА С КОНТРОЛИРУЕМЫМИ ВЫБРОСАМИ CO

Способ производства клинкера из сырьевой смеси включает подогрев сырьевой смеси дымовыми газами, предварительный обжиг сырьевой смеси, обжиг сырьевой смеси, предварительно обожженной во вращающейся печи, в котором при предварительном обжиге и обжиге во вращающейся печи образуются дымовые газы, содержащие CO. Дымовые газы, образованные при предварительном обжиге, подвергают обработке для удаления СОбез смешения вышеназванных газов с дымовыми газами, образованными при обжиге во вращающейся печи. Газы предварительного обжига подают на контактный обогрев сырьевой смеси, а дымовые газы, образующиеся при обжиге во вращающейся печи, либо удаляют из процесса в агрегат для регенерации теплоты без соприкосновения с подогреваемой сырьевой смесью или продуктами предварительного обжига, либо используют, по меньшей мере, часть их для косвенного обогрева обрабатываемой смеси. Технический результат: снижение выброса СОпри снижении затрат на его удаление. 16 з.п. ф-лы.

СПОСОБ ПОЛУЧЕНИЯ ВЯЖУЩЕГО

Изобретение относится к шлакощелочным вяжущим и может быть использовано в промышленности строительных материалов, для изготовления растворов и бетонов различного назначения. В способе получения вяжущего, заключающемся в помоле высушенного до влажности не более 1% доменного гранулированного шлака, смешении с микрокремнеземом конденсированным с удельной поверхностью 15000-25000 м2/кг, введении в состав вяжущего активатора шлака - кальцинированной соды и затворении вяжущего, используют доменный гранулированный шлак 3 сорта, помол которого производят совместно с кальцинированной содой с последующим перемешиванием с микрокремнеземом и затворением вяжущего водой, при следующем соотношении компонентов, мас.%: доменный гранулированный шлак 3 сорта 90-91,5, микрокремнезем конденсированный с удельной поверхностью 15000-25000 м2/кг 3,5-5, сода кальцинированная в пересчете на сухое вещество 3,5-5. Технический результат - упрощение технологии получения шлакощелочного вяжущего с сохранением прочностных ...

ВЯЖУЩЕЕ И СПОСОБ ПОЛУЧЕНИЯ ВЯЖУЩЕГО

FIELD: manufacture of building materials, particularly, binders for production of cellular and building mortars. SUBSTANCE: binder contains calcinate produced at temperature of 1150-1200 C of mixture of chalk of fraction sizing 0-40 mm in the amount of 65-78% and waste of gravitation coal preparation of fraction of 0-20 mm 22-35%, and added to binder is gypsum stone in the amount of 3%. The method of production of binder includes preparation of mixture of chalk of fraction of 0.40 mm 65-78% and waste of gravitation preparation of coal of fraction of 0.20 mm 22-35%, its calcination at 1150-1200 C and subsequent grinding with addition of gypsum stone in the amount of 3 mas.% of the binder mass. EFFECT: reduced initial coast of raw material, higher activity of binder. 2 cl, 1 tbl СЗТУ 0О0сС ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВУ” 2074 132 ' 57 МК © 04 В 7/24/С 04 В 111:20 13) СЛ 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 94019354/33, 23.05.1994 (30) Приоритет: 31.03.1993 ЦА 93111602 (46) Дата публикации: 27.02.1997 (56) Ссылки: Авторское свидетельство СССР М 1100262, кл. С О4В 7/14, 1984. Известково-шлаковое вяжущее. Технические условия ТУ 234 УССР 118-88. Соколовский В.А. и др. Исследование некоторых свойств автоклавного вяжущего. Сборник трудов ВНИИСТРОМ. - М.: М 16(44), 1969, с.176. (71) Заявитель: Спинжар Татьяна Ивановна[ЦА], Раценберг Герш Алтерович[ЦА], Зубов Юрий Андреевич[ЦА], Калиновская Нина Максимовна[ЦА], Замиховский Мирон Аронович[ЦА] (72) Изобретатель: Спинжар Татьяна Ивановна[ЦА], Раценберг Герш Алтерович[ЦА], Зубов Юрий Андреевич[Ц А], Калиновская Нина Максимовна[ЦА], Замиховский Мирон Аронович[ЦА], Сакапо Евгений Михайлович[ЦА], Цалапова Татьяна Поликарповна[ЦА], Шелудченко Анатолий Ильич[ЦА], Мялицин Валерий Васильевич[ЦА] (73) Патентообладатель: Спинжар Татьяна Ивановна[ЦА|], Раценберг Герш Алтерович[ЦА], Зубов Юрий Андреевич[ЦА], Калиновская Нина Максимовна[ЦА|], Замиховский Мирон Аронович[ЦА] ( ...

Способ получения цемента на белитовом клинкере и полученный на его основе медленноотвердеющий цемент

FIELD: chemistry. SUBSTANCE: disclosed group of inventions relates to a method of producing slow-setting cement and cement produced on its basis. Method involves preparation of a crude mixture containing carbonate component in amount of 89.2–90.2 wt% and clay component in amount of 1.1–1.2 wt %, primary combined grinding of carbonate component and clay component in wet self-grinding mill to obtain coarse sludge, fine grinding of coarse sludge in tube mills together with ferruginous additives in amount of 2.5–2.6 wt%. Fine grinding is carried out until residue on sieve No. 008 – 7.0±2.0 %, on sieve No. 020 – 3.0±1.0 %. Then, the sludge is mixed and corrected in the sludge basins by adding the alumina component in amount of 1.1–1.2 wt% and silica component in amount of 4.8–6.0 wt%. Sludge is calcined in a rotary furnace by heating it to 1,350 °C with further cooling and obtaining belite clinker. Obtained clinker is milled together with gypsum in amount of 5.8–7.0 wt% and mineral additives in amount of 1–5.9 wt%. Of fine powder to a specific surface of 3,200±200 cm 2 /g and a residue on sieve No. 008 1±0.5 %. Cement has the following composition, wt%: SiO 2 21.4–22.6; Al 2 O 3 4–4.7; Fe 2 O 3 4–4.84; CaO 60–61.8; SO 3 2.4–3.5, percentage of other impurities 1.2–1.4, MgO, R 2 O(K 2 O, Na 2 O) – balance. EFFECT: creation of cement with slow and more uniform kinetics of set of compression and flexural strength at all stages of hardening, low early strength, which reduces risk of defects in structure of concrete; besides, proposed method provides reduction of slurry burning temperature to 1,350 °C, which increases service life of furnace lining and its ability to counteract both high temperatures and chemical action of clinker melt on refractories. 10 cl, 11 tbl, 3 ex, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) (19) RU (11) (13) 2 736 594 C1 (51) МПК C04B 7/02 (2006.01) C04B 7/24 (2006.01) C04B 7/36 (2006.01) C04B 7/38 (2006.01) ...

СПОСОБ ПРОИЗВОДСТВА КЛИНКЕРА С КОНТРОЛИРУЕМЫМИ ВЫБРОСАМИ CO2

... 1. Способ производства клинкера из сырьевой смеси, включающий в себя этапы, на которых: ! подогревают сырьевую смесь дымовыми газами, ! предварительно обжигают сырьевую смесь, ! обжигают сырьевую смесь, предварительно обожженную во вращающейся печи, ! причем при предварительном обжиге и обжиге во вращающейся печи образуются дымовые газы, содержащие CO2, ! отличающийся тем, что дымовые газы, образованные при предварительном обжиге, подвергают обработке для удаления СО2 без смешения вышеназванных газов с дымовыми газами, образованными при обжиге во вращающейся печи. !2. Способ по п.1, отличающийся тем, что, по меньшей мере, часть дымовых газов, образующихся при обжиге во вращающейся печи, подогревает косвенным образом сырьевую смесь. ! 3. Способ по п.1 или 2, отличающийся тем, что, по меньшей мере, часть дымовых газов, образующихся при обжиге во вращающейся печи, подогревает косвенным образом реагенты, введенные во вращающуюся печь. ! 4. Способ по одному из пп.1 и 2, отличающийся тем, что ...

Способ обжига цементного клинкера во вращающейся печи

Vorrichtung und Verfahren zum Einspritzen von Wasser in die Austragsseite einer Zementmuehle

Verfahren zur Herstellung von >>ultrafeinem<< Zement

Verfahren zur Herstellung von Zement, welcher Gips beigemischt enthaelt

Hydraulic cements comprising carbonate compound compositions

Improvements in and relating to the production of hydraulic cement

A hydraulic cement is made by mixing calcium carbonate, especially natural limestone rock, with a clinker, derived from burning a mixture of calcium carbonate and aluminium silicate, in such amount that the proportion of pure carbonate added to free lime in the clinker is approximately 8 to 1. The mixed carbonate and clinker are ground together to cement fineness. The clinker is preferably made from a mixture of three parts of calcium carbonate to one part of aluminium silicate and free silica. In an example 88 parts of calcium carbonate is added to 100 parts of a clinker containing 12 parts of free lime. If great strength is not required the proportion of added carbonate may be increased to for instance 85 per cent of the total material. Retarding agents such as potassium dichromate, boric acid, borax, and sodium, potassium or calcium sulphate may be added.

A process for the production of hydraulic binders

... 1,134,689. Making cement. RHEINISCHE KALKSTEINWERKE G.m.b.H. 26 June, 1967 [14 July, 1966], No. 29325/67. Heading C1H. A process for making cement by sintering a raw mix in which the calcium component consists mainly of burned lime using heat liberated during formation of the klinker comprises briquetting a raw mix with a particle size such that less than 10% is returned on a 4900 mesh screen (DIN 4188) optionally in the presence of a binder, and feeding the briquettes to a reactor in which they are heated to the reaction temperature at which the klinker minerals are formed by countercurrent passage of hot air heated beforehand by the incandescent klinker, the quantity of air amounting to between 0.68 and 0.82 Nm3 per kg. of klinker removed. The temperature of the waste air is preferably lower than 200‹ C., and the temperature of the klinker removed lower than 150‹ C. The raw mix may contain clay, Ca(OH) 2 or CaCO 3 in such quantities that at most about 70 k.cal./kg. of klinker ...

FIREPROOF FIBER SOLIDIUM

VERFAHREN ZUR HERSTELLUNG VON HOCHREINER TONERDE UND VON ZEMENT

VERFAHREN ZUR REGENERIERUNG UND REAKTIVIERUNG INAKTIV GEWORDENEN ZEMENTES

VERFAHREN UND VORRICHTUNG ZUM TRANSPORT VON GASEN

PROCEDURE FOR THE PRODUCTION OF CEMENT CLINKER

PROCEDURE AND DEVICE FOR THE TRANSPORT OF GASES

PROCEDURE AND DEVICE FOR THE USE OF BLASTFURNACE SLAGS DURING THE CEMENT PRODUCTION

Method and plant for preheating particulate or pulverulent material

Method and apparatus for using steel slag in cement clinker production

Method and apparatus for using blast-furnace slag in cement clinker production

Process for the production of cement

PROCESS FOR OBTAINING A MINERAL CIMENTITIOUS SUBSTANCE

L'invention concerne un procédé d'obtention d'une substance minérale à partir d'une base comportant une matière minérale, le procédé comprenant l'obtention de la base comportant une quantité prédéterminée de la matière minérale synthétisée par une structure vivante ou une partie de celle-ci, caractérisé en ce que l'obtention de la base comprend la fourniture de la structure vivante et la fourniture d'au moins un microorganisme lactique susceptible de symbiose avec la structure vivante pour la synthèse de la matière minérale de la substance minérale. L'invention concerne également une composition minéralisatrice comprenant une structure vivante, un microorganisme lactique, une substance nutritive ; la substance minérale utilisée dans le procédé ; et l'utilisation d'une combinaison d'une structure vivante et d'un microorganisme lactique en symbiose l'un avec l'autre, comme agent de minéralisation dans un matériau auto-régénérant.

PROCESS FOR MANUFACTURING CLINKER WITH CONTROLLED CO2 EMISSION

L'invention concerne un procédé de fabrication de clinker à partir d'un c ru mettant en oeuvre : -le préchauffage du cru par des fumées de combustion, -la précalcination du cru, -la calcination du cru précalciné dans un four r otatif, dans lequel la précalcination et la calcination dans le four rotatif produisent des fumées de combustion comprenant du CO2, dans lequel on fait subir un traitement d'élimination de CO2 aux fumées de combustion créées par la précalcination sans mélanger lesdites fumées aux fumées de combustion cr éées par la calcination dans le four rotatif.

3-MODE BLENDED FIBERS IN AN ENGINEERED CEMENTITIOUS COMPOSITE

Disclosed herein are fiber reinforced cement composite materials incorporating a 3-mode fiber blend that includes cellulose pulp and synthetic fibers in a ratio selected to provide the composite material with improved water absorption characteristics and the same or improved mechanical properties as compared to equivalent composite materials reinforced with predominantly or all cellulose fibers. Also disclosed herein are fiber blends comprised of a combination of cellulose fibers and polypropylene fibers adapted to reinforce cementitious composite articles manufactured by the Hatschek process and autoclave cured.

Method and appts. for using steel slag in cement clinker prodn.

Treatment of the klinkers in the cement kilns

Process for the manufacture of cement

PROCESS AND DEVICE FOR THE TRANSPORT OF GAS

Process to regularize and slow down the catch of the hydraulic binders.

CEMENT MANUFACTURE

Method and Apparatus for Controlling Acid Gas Emissions from Cement Plants

A method and apparatus for controlling emissions of acid forming gases such as sulfur dioxide from cement plants is disclosed. Gaseous effluent from the cement plant pyroprocessing chamber is routed to the plant's raw mill to heat and dry the feed meal used in cement production. When the raw mill is in operation microfine lime particles are sprayed into the raw mill using a nozzle system. The spraying of hydrated lime into the raw mill scrubs acid forming gases in the process gaseous effluent. When the raw mill is not operational, microfine lime is sprayed into a gas conditioning tower that is also used to reduce the temperature of the effluent gases to facilitate efficient collection of dust particles prior to emission of the cleansed effluent flow into the atmosphere.

Method and system for separating mercury from waste gases of a cement production process

In the method according to the invention for separating mercury from waste gases of a cement production process, the mercury is sorbed on a sorbent, the sorbent is subsequently discharged from the process and supplied to a discharge reactor which is operated with a carrier gas. The sorbent is heated there to temperatures of more than 250° C. so that the mercury is discharged from the sorbent and changed into the gas phase, the gas of the discharge reactor that has accumulated mercury subsequently having the dust removed from it in a preliminary dust removal device, and only a part-flow of the gas which has been enriched and had the dust removed from it in this manner being drawn off at high temperatures and cleaned in a subsequent sorption stage, whilst the remaining part-flow is brought to the temperature required for the discharge of the mercury in the discharge reactor in a heat transfer system and is again supplied as a carrier gas to the discharge reactor.

Green Cement for Sustainable Construction

“Green” cements, which can be carbon neutral or negative, can be prepared at lower temperatures (450° C.-500° C.) by utilizing feed compositions comprising (i) TiO 2 , TaO x N y , TiO x N y , RuO 2 , Pt, TaO, band gap materials, or a first mixture thereof; (ii) AI 2 O 3 ; and (iii) Ca 2 SiO 2 , MgSiO 2 , MnSiO 2 , or a second mixture thereof; and spent wash with melanoidin as a binder.

Method and device for purifying exhaust gases

The invention relates to a regenerative thermal postcombustion plant ( 24 ) used for purifying exhaust gas comprising hydrocarbons and nitrogen oxides, particularly for exhaust gas occurring during cement clinker production, by means of which the carbon compound is oxidized and the nitrogen oxides are thermally reduced while feeding in a nitrogen-hydrogen compound at a temperature of greater than 800° C. in the multistage combustion chamber ( 35 ).

Process for utilizing organic waste materials

In a process for utilizing organic waste materials, in particular cellulose-containing, moist, organic waste materials, in a clinker production process in which the waste materials are introduced as fuel and burnt in the clinker production process, the waste materials are brought into contact with the hot exhaust gases of the clinker production process and dried in a drying step flowing in parallel therewith before they are introduced into the clinker production process. The drying step is carried out in a drying reactor in which the moist waste materials are passed together with the hot exhaust gases through a series of concentrically arranged tubes, with multiple changes in flow direction about 180°, and the temperature of the hot exhaust gases is set to a maximum value of 400° C. by mixing in of ambient air and/or air from the clinker production process before the drying step. (FIG. ) 1. A process for utilizing organic waste materials , in particular cellulose-containing , moist , organic waste materials , in a clinker production process in which the waste materials are introduced as fuel and burnt in the clinker production process , wherein the waste materials are brought into contact with the hot exhaust gases of the clinker production process and dried in a drying step flowing in parallel therewith before they are introduced into the clinker production process , characterised in that the drying step is carried out in a drying reactor in which the moist waste materials are passed together with the hot exhaust gases through a series of concentrically arranged tubes , with multiple changes in flow direction about 180° , and the temperature of the hot exhaust gases is set to a maximum value of 400° C. by mixing in ambient air and/or air from the clinker production process before the drying process.2. The process according to claim 1 , characterised in that the exhaust gases from the clinker cooler and/or the preheater are used as the hot exhaust gases.3. The ...

METHOD FOR RECYCLING WASTE WATER FROM A STAINLESS STEEL SLAG TREATMENT PROCESS

The present invention relates to a method for recycling waste water from a stainless steel slag treatment process wherein stainless steel slag is brought into contact with water, in particular to neutralize the free lime contained therein, thereby producing said waste water. This waste water contains heavy metals, including at least chromium, and has a pH higher than or equal to 11. In accordance with the invention, it is used as production water for manufacturing mortar and/or concrete. In this way, the heavy metals, which are dissolved in the waste water and thus readily available, become bound in the newly formed cement phases so that they are prevented from leaching. Moreover, it has been found that the workability of the fresh mortar or concrete and also the quality of the final mortar or concrete materials is not negatively affected by the use of this alkaline waste water and that an accelerated setting could be achieved during the first hours. 1. A method for recycling waste water from a stainless steel slag treatment process wherein stainless steel slag is brought into contact with water thereby producing said waste water which contains heavy metals , including at least chromium , characterised in that said waste water is used for manufacturing mortar and/or concrete , which mortar and/or concrete made by mixing at least one hydraulic binding agent , at least one aggregate and water.2. A method according to claim 1 , characterised in that the waste water used to manufacture said mortar and/or concrete has a pH higher than 7 claim 1 , in particular higher than 9 claim 1 , more particularly higher than 11 and even more particularly higher than 12.3. A method according to claim 1 , characterised in that said hydraulic binding agent contains di- and tricalcium silicates.4. A method according to claim 3 , characterised in that said hydraulic binding agent comprises Portland clinker.5. A method according to claim 4 , characterised in that said hydraulic binding ...

METHODS AND SYSTEMS FOR UTILIZING CARBIDE LIME

Methods and systems are provided for producing a carbonate precipitation material comprising stable or reactive vaterite from carbide lime that provides both a source of divalent cations (Ca ions, Mg ions, etc.) and a source of proton removing agent. 1. A method comprising:a) contacting an aqueous solution comprising carbide lime with carbon dioxide from an industrial process; andb) producing a precipitation material comprising reactive vaterite.2. The method of claim 1 , further comprising purifying the carbide lime by treatment with weak base before step a) to make the aqueous solution comprising carbide lime.3. The method of claim 1 , further comprising purifying the carbide lime by treatment with weak base selected from borate claim 1 , N-containing salt claim 1 , N-containing aliphatic compound claim 1 , N-containing aromatic compound claim 1 , and combinations thereof claim 1 , before step a) to make an aqueous solution comprising carbide lime.4. The method of claim 3 , wherein the N-containing salt is selected from ammonium chloride claim 3 , ammonium sulfate claim 3 , ammonium nitrate claim 3 , and combinations thereof.5. The method of claim 2 , wherein molar ratio of the weak base:carbide lime is between 2:1 to 4:1.6. The method of claim 1 , further comprising subjecting the aqueous solution at step a) to one or more precipitation conditions that favor formation of the reactive vaterite.7. The method of claim 6 , wherein the one or more precipitation conditions are selected from temperature claim 6 , pH claim 6 , pressure claim 6 , ion ratio claim 6 , precipitation rate claim 6 , presence of additive claim 6 , presence of ionic species claim 6 , concentration of additive and ionic species claim 6 , stirring claim 6 , residence time claim 6 , mixing rate claim 6 , forms of agitation claim 6 , presence of seed crystal claim 6 , catalyst claim 6 , membrane claim 6 , or substrate claim 6 , dewatering claim 6 , drying claim 6 , ball milling claim 6 , and ...

METHOD AND INSTALLATION FOR PRODUCING CLINKER

The invention relates to a process and a plant for producing cement clinker, which has a furnace system and has essentially the following process steps:—raw material is preheated in a preheater by means of hot offgases from the furnace system,—dust is removed from the hot offgas downstream of the preheater in a preliminary dust removal apparatus to a residual dust concentration of max. 20 g/standard m,—the offgas which has been subjected to preliminary dust removal is purified in a selective catalytic flue gas purification plant (selective catalytic reduction, SCR),—at least part of the offgas purified in the flue gas purification plant is conveyed in a bypass around a raw material milling plant to a cooling device and cooled there to temperatures of max. 140° C.,—before the residual dust in the offgas is precipitated in a process filter and—at least part of the residual dust precipitated in the process filter is discharged for removal of mercury. 2. Method according to claim 1 , characterised in that claim 1 , for improved mercury adsorption downstream of the cooling device claim 1 , there is injected into the exhaust gas an additional adsorbent which is separated in the process filter together with the residual dust.3. Method according to claim 1 , characterised in that the exhaust gas in the cooling device is reduced to a maximum of 125° C. claim 1 , preferably to a maximum of 110° C.4. Method according to claim 1 , characterised in that the hot exhaust gas downstream of the preheater in the preliminary dust removal device is dedusted to a residual dust concentration of a maximum of 10 g/Nm claim 1 , preferably to a maximum of 5 g/Nm.5. Method according to claim 1 , characterised in that a portion of the residual dust separated in the process filter is recirculated and another portion is flushed out for mercury cleaning.6. Method according to claim 5 , characterised in that at least a portion of the residual dust cleaned in respect of the mercury is recirculated ...

Cement clinker manufacturing plant

A cement clinker manufacturing plant that includes a plant for producing purified syngas, obtained from solid waste, and process for transferring ash recovered from the ash pan of the gasifier to at least one inlet of the feedstock conversion device, which the plant includes, and/or of the furnace for the purpose of incorporating said ash into the feedstock; and a process for conveying the purified syngas to the main tuyere of the furnace and/or to at least one inlet of the feedstock conversion device.

METHOD FOR PRODUCING CEMENT WITH SEPARATION OF CO2

A plant for producing cement clinker from calcium carbonate-containing raw meal. A preheating stage preheats the raw meal, which preheating stage is heated by exhaust gases from a following sintering stage. A stage is provided for deacidification and sintering of the raw meal. A cooling stage for the sintered meal is of at least two-stage design and has a gas separation stage for separating exhaust gases from the deacidification and sintering stage which is routed in a first gas circuit from the cement clinker cooling gas. A gas/gas heat exchanger is arranged downstream of the preheating stage in the gas flow direction, through which heat exchanger heat from the combined exhaust gases which leave the preheating stage is transferred into a gas, extracted from the gas for cooling the cement clinker, routed in a second gas circuit, for drying the raw meal in a preceding grinding stage. 1. A plant for producing cement clinker from calcium carbonate-containing raw meal comprising:at least one preheating stage for preheating the calcium carbonate-containing raw meal, which preheating stage is heated by exhaust gases from a following sintering stage,at least one stage for deacidification and sintering of the raw meal,at least one cooling stage for the sintered meal,the at least one cooling stage being of at least two-stage design, and whereinthe at least one cooling stage has at least one gas separation stage for separating exhaust gases from the deacidification and sintering stage on the one hand which is routed in a first gas circuit from, on the other hand, the gas for cooling the cement clinker, and whereina gas/gas heat exchanger is arranged downstream of the preheating stage in the gas flow direction, through which gas/gas heat exchanger heat from the combined exhaust gases which leave the preheating stage is transferred into a gas, routed in a second gas circuit, for drying the raw meal in a preceding grinding stage,the gas for drying the raw meal being extracted ...

CEMENT CLINKER LINE AND A METHOD FOR OPERATING A CEMENT CLINKER LINE

A method for manufacturing clinker includes sintering raw meal in a kiln to clinker, preheating the raw meal (prior to sintering the raw meal) in a preheater using a main flue gas stream from the kiln as heat source, dedusting the main flue gas downstream of the preheater at a temperature below the boiling point of mercury (thereby obtaining mercury loaded dust) and withdrawing a bypass flue gas stream from the kiln. The method is configured to efficiently remove mercury from the manufacturing process if mercury in the bypass flue gas is vaporized by injecting of at least a fraction of the mercury-loaded dust into the bypass flue gas stream. Subsequently, the bypass flue gas is dedusted and cooled down. Thereby, the mercury can be adsorbed by injecting an adsorbent (such as activated charcoal) into the bypass flue gas. With subsequent removal of the adsorbent, mercury is finally removed from the manufacturing process. 1. A method for manufacturing clinker , the method comprising:sintering raw meal in a kiln to clinker,preheating the raw meal in a preheater with the use of a main flue gas stream from the kiln as a heat source,dedusting the main flue gas stream at a location downstream from the preheater at a temperature below the boiling point of mercury, to obtain dedusted flue gas and mercury-loaded dust,withdrawing a bypass flue gas stream from the kiln,vaporizing at least one of mercury and a mercury compound in the bypass flue gas by injecting at least one of (i) a fraction of the mercury-loaded dust and (ii) a fraction of mercury-loaded waste-products into the bypass flue gas stream,dedusting the bypass flue gas stream,cooling the bypass flue gas stream to form a cooled bypass flues gas stream and binding at least one of the mercury and the mercury compound to an adsorbent, said adsorbent being injected into the cooled bypass flue gas stream,removing the adsorbent from the cooled bypass flue gas to form removed adsorbent and further processing the cooled bypass ...

CEMENT KILN EXHAUST GAS POLLUTION REDUCTION

A method for reducing pollution in a cement kiln environment and a system for treating cement kiln exhaust gas are provided. The method includes the steps of: treating a cement kiln exhaust gas stream with a treating fluid, such as a water soluble alkaline-earth metal sulfide. In one application, the treating fluid is injected by spraying droplets into the cement kiln exhaust gas stream. A system for treating cement kiln exhaust gas includes a reagent containing a water soluble alkaline-earth metal sulfide in water, and a nozzle to spray the reagent into the cement kiln exhaust gas stream. 1. A system for reducing pollution in a material processing environment comprising:a treating fluid comprising a reagent containing a water soluble alkaline-earth metal sulfide;at least one nozzle configured to communicate with a cement kiln exhaust gas stream;a first particulate collection system; andwherein the at least one nozzle is configured to inject the treating fluid into the cement kiln exhaust gas stream to form a combined stream before entering the particulate collection system and wherein the particulate collection system is configured to separate particulates comprising at least a portion of one heavy metal from the combined stream by forming modified cement kiln dust containing the heavy metal in non-leachable form.2. The system of claim 1 , wherein said treating fluid further comprises at least one of a surfactant claim 1 , a dispersant claim 1 , and a hyperdispersant.3. The system of claim 1 , wherein said at least one nozzle is configured to spray droplets having a size configured to allow said droplets to have a minimum residence time of about 1 second to about 4 seconds.4. The system of claim 3 , wherein said at least one nozzle is configured to spray droplets having an average size of at least about 20 microns.5. The system of claim 3 , wherein said at least one nozzle is configured to spray droplets having an average size of about 30 microns to about 40 ...

Process and plant for producing cement clinker and for purifying the offgases formed

The invention relates to a process and a plant for producing cement clinker and for purifying the off-gases formed thereby, wherein cement raw meal is preheated in a preheater by means of hot off-gases and then optionally precalcined, the preheated and optionally precalcined cement raw meal is burnt in a rotary kiln to form cement clinker, the cement clinker is cooled in a cooler, the hot off-gases used in the preheater are used in a raw mill for treating the cement raw meal, the dust content of a dust-containing mill off-gas thereby formed is reduced in a separating device to less than 5 g/Nm 3 , preferably less than 1 g/Nm 3 , alkali hydrogen carbonate and/or alkali carbonate is added to and mixed with the mill off-gas whose dust content has been reduced to less than 5 g/Nm 3 , and the mixed gas thereby formed is subsequently fed to a process filter for separation of dust laden with pollutants.

METHOD AND DEVICE FOR REMOVING MERCURY DURING THE PRODUCTION OF CEMENT CLINKER

A method and a device remove mercury from exhaust gases during a production of cement clinker. The device contains a pre-heating stage, a feed point for raw materials required for the production of the cement clinker, a rotary kiln for burning the raw materials, a filter stage for removing dust from the exhaust gases conducted in the main flow, and a raw mix mill for partially mill drying the raw materials. A circuit for the mercury in the exhaust gases is formed between the pre-heating stage and the raw mix mill or the filter stage. To achieve good mercury removal at low cost, a sub-flow of 1 to 30 volume percent of the exhaust gases is branched off from the main flow of the exhaust gases having a temperature of at least 300° C. A separator and thereafter at least one stage for removing mercury are arranged in the sub-flow. 134-. (canceled)35. A method for separating mercury from exhaust gases during production of cement clinker , which comprises the steps of:feeding in raw materials, required for producing the cement clinker, into a pre-heating stage against a direction of flow of the exhaust gases according to a counter flow principle, and the mercury bonded in the raw materials is vaporized due to a heating of the raw materials in the pre-heating stage;firing the raw material in a rotary kiln;using the exhaust gases conducted in a main flow for at least partially mill drying the raw materials in at least one raw mix mill;dedusting the exhaust gases in at least one filter stage before the exhaust gases escape into atmosphere;feeding dust separated in the at least one filter stage into the pre-heating stage at least partially together with a milled raw material;forming a circuit for the mercury in the exhaust gases between the pre-heating stage and the raw mix mill or the at least one filter stage; andbranching off from the main flow of the exhaust gases a sub-flow of 1 to 30 per cent by volume of the exhaust gases having a temperature of at least 300° C., and the ...

METHOD FOR CAPTURING CARBON DIOXIDE

A method for integrating a carbon capture process with a process for cement production. 1. A method for capturing carbon dioxide comprising:supplying a first raw material containing a first carbon dioxide rich sorbent to a first calciner;at the first calciner, thermally decomposing the first carbon dioxide rich sorbent into a first carbon dioxide lean sorbent and a first carbon dioxide stream;supplying the first carbon dioxide lean sorbent to a carbonator;at the carbonator, adsorbing carbon dioxide from a flue gas to generate a second carbon dioxide rich sorbent;supplying the second carbon dioxide rich sorbent to a second calciner;at the second calciner, thermally decomposing the second carbon dioxide rich sorbent into a second carbon dioxide lean sorbent and a second carbon dioxides stream;providing at least a part of the second carbon dioxide lean sorbent to the carbonator.2. The method according to claim 1 , wherein the first and second carbon dioxide rich sorbent includes CaCOand the first and second carbon dioxide lean sorbent includes CaO.3. The method according to claim 1 , further comprising providing at least a part of the second carbon dioxide lean sorbent from the second calciner to a kiln for cement production.4. A method claim 1 , the method comprising:providing a first raw material, the first raw material containing a first carbon dioxide rich sorbent, to a first calciner;calcining the first raw material to generate a second raw material and a first carbon dioxide stream, the second raw material comprising a first carbon dioxide lean sorbent;providing the second raw material and a flue gas to a carbonator;at the carbonator, adsorbing carbon dioxide from the flue gas to generate a second carbon dioxide rich sorbent;providing the second carbon dioxide rich sorbent to a second calciner;at the second calciner, calcining the second carbon dioxide rich sorbent into a second carbon dioxide lean sorbent and a second carbon dioxide stream;providing at least a ...

Method for controlling nox concentration in exhaust gas in combustion facility using pulverized coal

A method for controlling an NOx concentration in an exhaust gas in a combustion facility by: measuring a reaction velocity k i of each of a plurality of chars, each corresponding to a plurality of types of pulverized coals; determining a relationship between the NOx concentration in the exhaust gas and the reaction velocity k i for each of the chars; (iii) blending the plurality of the types of the pulverized coal, wherein a blending ratio of the plurality of the types of the pulverized coal is determined by using, as an index, a reaction velocity k blend of the char of the blended pulverized coal, which corresponds to a target NOx concentration or below, on the basis of the relationship; and supplying the blended pulverized coal to the combustion facility as the fuel of the combustion facility.

METHOD FOR REFORMING UNBURNT-CARBON-CONTAINING FLY ASH, SYSTEM FOR REFORMING UNBURNT-CARBON CONTAINING FLY ASH, AND METHOD FOR PRODUCING FLY ASH FOR CONCRETE ADMIXTURE

There is provided a method for reforming unburned carbon-containing coal ash of the present invention, including: a receiving process of measuring L value and b value of unburned carbon-containing coal ash in a Lab color order system and sorting unburned carbon-containing coal ash of which the L value is 54 or more and the b value is 2 or more and 10 or less; and a classifying process of classifying the unburned carbon-containing coal ash sorted in the receiving process under a condition that a residue on a 45 μm sieve of reformed coal ash which has been reformed by classification is 8% by mass or less. 1. A method for reforming unburned carbon-containing coal ash , the method comprising:measuring an L value and a b value of unburned carbon-containing coal ash in a Lab color order system and sorting unburned carbon-containing coal ash of which the L value is 54 or more and the b value is 2 or more and 10 or less; andclassifying the unburned carbon-containing coal ash sorted under a condition that a residue on a 45 μm sieve of reformed coal ash which has been reformed by classification is 8% by mass or less.2. The method according to claim 1 ,wherein the unburned carbon-containing coal ash is unburned carbon-containing coal ash generated at a coal-fired thermal power plant.3. The method according to claim 1 ,wherein, the unburned carbon-containing coal ash is classified under a condition that the residue on a 45 μm sieve of the reformed coal ash which has been reformed by classification is 5% by mass or less.4. A system for reforming unburned carbon-containing coal ash claim 1 , the system comprising:a receiving unit that is configured to measure L value and b value of unburned carbon-containing coal ash in a Lab color order system and sorts unburned carbon-containing coal ash of which the L value is 54 or more and the b value is 2 or more and 10 or less; anda classifying apparatus that is configured to classify the unburned carbon-containing coal ash sorted by the ...

USE OF CLINKER KILN DUST FOR GAS SCRUBBING

Methods and apparatus for reducing the content of controlled acidic pollutants in clinker kiln emissions are disclosed. The methods and apparatus include introducing bypass dust produced during production of clinker into one or more locations between the preheater exhaust and the inlet to a dust filter including into a gas conditioning tower. Total bypass dust separated from the kiln exhaust gas may be used. The bypass dust can be separated into a fine and coarse portions. Fine or total bypass dust can be mixed with water to form a bypass dust slurry that can be introduced into the gas conditioning tower. Bypass dust can be used to reduce the content of acidic pollutants such as hydrogen chloride HCl and sulfur oxides SOfrom clinker kiln emissions. 1. A method for reducing the concentration of controlled pollutants in clinker kiln emissions , comprising: the exhaust gases comprise controlled pollutants and entrained dust; and', a preheater exhaust exit;', 'a gas conditioning tower operatively coupled to the preheater exhaust exit; and', 'an inlet to a dust filter operatively coupled to the gas conditioning tower; and, 'the gas conditioning system comprises], 'providing a clinker kiln, wherein the clinker kiln comprises a gas conditioning system configured to process exhaust gases from the clinker kiln, wherein,'} between the preheater exhaust exit and the gas conditioning tower;', 'into the gas conditioning tower;', 'between the gas conditioning tower and the inlet to the dust filter; or', 'a combination of any of the foregoing,, 'introducing bypass dust generated during operation of the clinker kilnthereby reducing the concentration of controlled pollutants in the clinker kiln emissions.24-. (canceled)5. The method of claim 1 , wherein the bypass dust comprises calcined dust and partially calcined dust.6. The method of claim 1 , wherein the controlled pollutants comprise controlled acidic pollutants.7. The method of claim 1 , wherein the bypass dust comprises total ...

Method for operating a plant for producing cement

A method for operating a plant for producing cement clinker from raw meal having, as viewed in the materials flow direction, at least one calciner for deacidifying the raw meal, and at least one rotary kiln for sintering the deacidified raw meal to form cement clinker. The deacidified raw meal, after passing through the calciner, flows via a cyclone preheating stage into the rotary kiln. Exhaust gases are guided from the rotary kiln into a reactor, arranged between the rotary kiln and the calciner, with fuel being fed into the reactor superstoichiometrically in relation to the dwell time of the exhaust gases in the reactor, so that carbon dioxide in the exhaust gases is reduced to form carbon monoxide. The carbon monoxide is used as a reducing agent for nitrogen oxides, which are chemically reduced in the reactor independently of the short dwell time in the calciner. 110-. (canceled)11. A method for operating a plant for producing cement clinker from raw meal having , viewed in the material flow direction , at least one calcinator for deacidifying the raw meal , and at least one rotary kiln for sintering the deacidified raw meal to form cement clinker , comprising the steps:flowing the deacidified raw meal, after passing the calcinator, via a cyclone preheating stage into the rotary kiln, superstoichiometric fuel is fed into the reactor in relation to the dwell time of the exhaust gases in the reactor, so that carbon dioxide contained in the exhaust gases is reduced to form carbon monoxide, and', 'the guiding of the exhaust gases from the rotary kiln being provided in such a way that fluidized raw meal goes into the reactor and is not filtered out by cyclone traps., 'guiding exhaust gases of the rotary kiln into a reactor, which is arranged between rotary kiln and calcinator, wherein'}12. The method as claimed in claim 11 , including a step of guiding the exhaust gases of the reactor into the calcinator claim 11 , wherein excess carbon monoxide is oxidized in the ...

METHOD AND SYSTEM FOR THE DENITRIFICATION OF FLUE GASES BY MEANS OF SNCR (SELECTIVE NON-CATALYTIC REDUCTION) AND DOWNSTREAM CATALYST FOR AMMONIA DECOMPOSITION

A method for denitrification of flue gases and a system, wherein flue gases generated in a rotary kiln are conveyed to a calcining zone for the deacidification of raw cement meal. Aqueous ammonia solution, ammonia, or ammonia-releasing substances for denitrifying the flue gases injected into the calcining zone according to the method of selective non-catalytic reduction (SNCR), and the flue gas stream, together with an ammonia slip generated during the denitrification, is passed through a heat exchanger and through at least one dedusting device. The flue gas is guided through a exhaust gas line via a catalyst for the decomposition of excess ammonia with residues of nitrogen oxide in accordance with a method of selective catalytic reduction (SCR), wherein the catalyst is arranged in a reactor provided in the exhaust line, and is no larger than is required for a sufficient decomposition of the ammonia. 1. A method of denoxing flue gases comprising:guiding flue gases which arise in a rotary kiln for sintering of cement clinker into a calcination zone for deacidification of raw meal,injecting aqueous ammonia solution, ammonia or substances that release ammonia for denoxing of the flue gases by the method of selective noncatalytic reduction (SNCR) into the calcination zone, and{'b': '10', 'guiding the flue gas stream together with any ammonia slip that arises in the denoxing through a heat exchanger and at least one device for dedusting (),'}whereinthe flue gas stream is conducted from the heat exchanger through a heat exchanger offgas conduit via a catalyst for degradation of excess ammonia with residues of nitrogen oxide present in the flue gas over the catalyst in accordance with a method of selective catalytic reduction (SCR), and,wherein the catalyst is disposed in a reactor provided within the heat exchanger offgas conduit and dimensions of the catalyst are only as great as required for the given degree of ammonia degradation in the particular case.2. The method as ...

Method and plant for denitrifying bypass gases in a multi-stage system of mixing chambers in a plant for producing cement clinker

A method and a corresponding plant for denitrifying bypass exhaust gases in a cement clinker production plant. Raw meal is sintered in a rotary kiln and deacidified in a calciner. A rotary kiln inlet chamber is connected to the calciner directly or by a riser duct. Bypass exhaust gas is drawn off near the inlet chamber. This exhaust gas is guided into a first mixing chamber, in which the exhaust gas is cooled to between 800 and 950 degrees C., then the exhaust gas is guided through a reaction pipeline segment, wherein the dwell time is between 0.5 and 3 seconds and ammonia, aqueous ammonia solution, or ammonia-releasing substances are injected for denitrification. Then the exhaust gas is guided into a second mixing chamber, in which the exhaust gas is cooled to between 150 250 degrees C. Then the exhaust gas is guided to a filter for dust removal. 19-. (canceled)10. A method for the denitrification of bypass exhaust gases in a plant for producing cement clinker , whereinthe plant has a rotary kiln for the sintering of raw meal to cement clinker, and has a calciner for the deacidification of the raw meal, downstream of the rotary kiln in the kiln exhaust gas flow direction,the rotary kiln has a rotary kiln inlet chamber which is connected directly or via a kiln riser duct to the calciner, andthe bypass exhaust gas is drawn off in the region of the rotary kiln inlet chamber, comprising the steps: 'the bypass exhaust gas is cooled in the first mixing chamber to a temperature of between 800° C. and 950° C.,', 'passing of the bypass exhaust gas into a first mixing chamber, where'} the residence time of the bypass exhaust gas in the reaction section is between 0.5 s and 3 s, and where', 'ammonia, aqueous ammonia solution or ammonia-releasing substances are injected into the reaction section for the denitrification of the bypass exhaust gas by the process of selective non-catalytic reduction (SNCR),, 'passing of the bypass exhaust gas from the first mixing chamber through ...

PERFORATED BURNER FOR A ROTARY KILN

A rotary kiln includes a stationary fuel nozzle and a perforated flame holder positioned within an inclined rotating shell. The flame holder includes a plurality of perforations that collectively confine a combustion reaction of the burner to the flame holder to shift most heat transfer from the combustion reaction from radiation heat transfer to convective heat transfer. 1. A rotary kiln , comprising:a fuel nozzle configured to output fuel and oxidant; an input surface proximal to the fuel nozzle;', 'an output surface distal from the fuel nozzle; and', 'a plurality of perforations extending from the input surface to the output surface and collectively configured to promote a combustion reaction of the fuel and oxidant within the perforations;, 'a flame holder positioned to receive the fuel and oxidant from the fuel nozzle, the flame holder includingan inclined rotary shell including an upper end and a lower end and configured to rotate around the fuel nozzle and to pass a process material along the inside of the inclined rotary shell.2. The rotary kiln of claim 1 , wherein the perforated flame holder is arranged along an axis of rotation of the inclined rotary shell.3. The rotary kiln of claim 1 , wherein the flame holder is configured to contain a majority of the combustion reaction within the perforations.4. The rotary kiln of claim 1 , comprising:a feedstock introduction apparatus at the upper end of the inclined rotary body; anda process material receiving apparatus at the lower end of the inclined rotary body.5. The rotary kiln of claim 4 , wherein the flame holder is mechanically coupled to the feedstock introduction apparatus and operatively coupled to the burner along an axis of rotation of the inclined rotary shell.6. The rotary kiln of claim 4 , wherein the at least one electrode is configured to minimize or make substantially constant a time to which the process material is subject to radiation heat transfer by causing the flame to occupy a small volume ...

Plant for production of cement with reduced emission of pollutant gasses

A plant for production of cement clinker from raw meal, having a calciner for deacidification of the raw meal and a rotary furnace for sintering the deacidified raw meal to give cement clinker. The deacidified raw meal flows through a cyclone preheating stage into the rotary furnace. A reactor is provided upstream of the calciner on the flow path of the rotary furnace offgas to the calciner, to which an inlet for the rotary furnace offgas leads. A corresponding method of operating such a plant wherein fuel is added to the reactor in a superstoichiometric amount in relation to the residence time of the offgases in the reactor, such that carbon dioxide present in the offgases is reduced to carbon monoxide. At least one input air conduit for supplying input air, preferably coming from a tertiary air conduit, is provided at at least one point in the reactor. 111-. (canceled)12. A plant for the production of cement clinker from raw meal comprising , seen in the direction of material flow:at least one calciner for deacidification of the raw meal, andat least one rotary furnace for sintering of the deacidified raw meal into cement clinker,wherein the deacidified raw meal, after passing through the calciner, flows through a cyclone preheating stage into the rotary furnace,wherein a reactor installed upstream of the calciner on the flow path of the offgas of the rotary furnace to the calciner is provided, to which an inlet for the offgas of the rotary furnace leads, andwherein at least one inlet air line for the supply of fresh air is provided at at least one site in the reactor.13. The plant as claimed in claim 12 , wherein the fresh air comes from a tertiary air line that feeds recuperation air from a clinker cooler installed downstream of the rotary furnace in the direction of material flow back into the plant.14. The plant as claimed in claim 12 , wherein a control device is provided that regulates the fresh air supplied to the reactor based on at least one of the ...

Systems and Methods for Net Carbon Negative and More Profitable Chemical Production

The present invention pertains to processes of, for example, preparing zinc oxide and other substances. In one embodiment an exemplary process pertains to reacting ammonium chloride with zinc oxide to form a zinc chloride, gaseous ammonia, and gaseous water vapor. The zinc chloride may be reacted with sulfuric acid to form a zinc sulfate and hydrochloric acid. The zinc sulfate may be decomposed to produce zinc oxide among other substances. 1. A process comprising:reacting ammonium chloride with zinc oxide to form a zinc chloride, ammonia, and water;reacting the zinc chloride with sulfuric acid to form a zinc sulfate and hydrochloric acid; andthermally decomposing the zinc sulfate to produce zinc oxide.2. The process of wherein the thermal decomposing of zinc sulfate further produces sulfur dioxide claim 1 , or diatomic oxygen claim 1 , or sulfur trioxide claim 1 , or a combination thereof.3. The process of wherein the thermal decomposing of zinc sulfate further produces sulfur dioxide and wherein the process further comprises reacting sulfur dioxide with diatomic oxygen to produce sulfur trioxide.4. The process of which further comprises reacting said sulfur dioxide claim 2 , or diatomic oxygen claim 2 , or sulfur trioxide claim 2 , or a combination thereof with water to form sulfuric acid.5. The process of which further comprises reacting said formed sulfuric acid with zinc chloride.6. The process of wherein said ammonia comprises gaseous ammonia and wherein said water comprises gaseous water vapor.7. The process of which further comprises condensing said gaseous water vapor.8. The process of which further comprising condensing said gaseous ammonia and said gaseous water vapor.9. The process of wherein at least a portion of the zinc chloride claim 1 , the zinc sulfate claim 1 , or both are in a solid phase.10. The process of wherein at least a portion of sulfuric acid claim 1 , hydrochloric acid claim 1 , or both are in a liquid phase.11. The process of which ...

TREATMENT OF EXHAUST GASES FROM CEMENT CLINKER PRODUCTION

Method for the purification of exhaust gas from the production of cement clinker in a rotary kiln, in which raw materials are ground in a mill to form raw meal, raw meal is preheated in countercurrent in a preheater with exhaust gas from the rotary kiln and optionally precalcined, preheated and optionally precalcined raw meal is supplied to the rotary kiln and burned in the rotary kiln to form cement, the exhaust gas from the rotary kiln is denitrified before entering the preheater of a selective non-catalytic nitrogen oxide reduction with a reagent which provides ammonia, and wherein, according to the invention, the exhaust gas from the preheater is subjected to gas conditioning and catalytic oxidation of ammonia. The object is further solved by means of a device for gas conditioning and catalytic oxidation which is arranged between the preheater and the mill. 118-. (canceled)19. A method for the purification of exhaust gas from the production of cement clinker in a rotary kiln , comprising the following steps:grinding raw materials in a mill to form raw meal,preheating the raw meal in countercurrent in a preheater with exhaust gas from the rotary kiln and optionally precalcinating the raw meal,supplying the preheated and optionally precalcined raw meal to the rotary kiln and burning the raw meal in the rotary kiln to form cement clinker,denitrifying the exhaust gas from the rotary kiln before entering the preheater by a selective non-catalytic reduction with a reagent which provides ammonia, wherein the molar ratio of ammonia to nitrogen oxides in the non-catalytic reduction is adjusted to 1.1 to 2.5, andsubjecting the exhaust gas from the preheater to catalytic oxidation and gas conditioning.20. The method according to claim 19 , wherein a gas purification with alkaline substances claim 19 , preferably calcium hydroxide claim 19 , is carried out as gas conditioning.21. The method according to claim 19 , wherein aqueous ammonia or urea solution is used as the ...

METHOD AND FACILITY FOR RECOVERING CO2 GAS IN CEMENT MANUFACTURING FACILITY

To provide a method and facility for enabling COgas generated in a cement manufacturing facility to be separated and recovered at a high concentration. To this end, according to the present invention, the calcination of a cement material and the recovery of COgas generated in a calciner are performed by one of the following steps of: [1] superheating the cement material before calcination to at least the calcination temperature thereof in a superheating furnace and then mixing the superheated cement material with a new cement material before calcination in a mixer/calciner; [2] mixing, in the mixer/calciner, the cement material before calcination with a part of high-temperature cement clinker discharged from a cement kiln; and [3] using an externally heated calciner. 1. (canceled)2. A method for recovering COgas generated in a cement manufacturing plant , wherein a pre-calcination cement material is preheated by a first preheater and then supplied to a cement kiln having an inside which is kept at a burning temperature , the method comprising:supplying the precalcination cement material, which has been extracted from the first preheater, to a mixer/calciner;{'sub': '2', 'introducing the cement material, which has been heated above a calcination temperature in the superheating furnace, to the mixer/calciner, whereby a temperature in the inside of the mixer/calciner is maintained at the calcination temperature or above, so that after the precalcination cement material is calcined, COgas which has been generated in the mixer/calciner is recovered,'}supplying a part of the calcined cement material to the superheating furnace, andsupplying a remaining part of the calcined cement material to the cement kiln,{'sub': 2', '2', '3', '2', '3, 'wherein the pre-calcination cement material comprises limestone, SiO, AlOand FeO.'}3. A method for recovering COgas generated in a cement manufacturing plant , the method comprising:supplying the precalcination cement material, which has ...

INTRINSIC CO2 CAPTURE PROCESS FOR THE PRODUCTION OF METAL OXIDES, CEMENT, CO2 AIR CAPTURE OR A COMBINATION THEREOF

The present invention pertains to a process for producing captured carbon dioxide. Calcium carbonate may be reacted with sulfur dioxide to produce calcium sulfite and gaseous carbon dioxide. Calcium sulfite may be thermally decomposed to produce gaseous sulfur dioxide. The processes may be used in conjunction with combusting various fuels such as a carbonaceous fuel, or a sulfurous fuel, or a nitrogenous fuel, or a hydrogen fuel, or a combination thereof. 1. A process for producing captured carbon dioxide comprising:reacting calcium carbonate with sulfur dioxide solution to produce solid calcium sulfite and gaseous carbon dioxide;thermally decomposing said calcium sulfite to produce gaseous sulfur dioxide; andrecovering gaseous sulfur dioxide by dissolving it in a solution;wherein the gaseous carbon dioxide is captured and wherein the reaction of calcium carbonate with sulfur dioxide solution is conducted under conditions to substantially prevent the formation of sulfate salts.2. The process of wherein said thermal decomposing is conducted under conditions to further produce cement.3. The process of wherein said thermal decomposed is conducted under conditions to further produce calcium oxide.4. The process of wherein said thermal decomposing is conducted in a mixture with calcium carbonate.5. The process of wherein said thermal decomposing is conducted in a mixture comprising a clay claim 1 , or silicon dioxide claim 1 , or aluminum oxide claim 1 , or iron oxide claim 1 , or iron carbonate claim 1 , or magnesium carbonate claim 1 , or magnesium oxide claim 1 , or a silicate claim 1 , or an aluminate claim 1 , or shale claim 1 , or sand claim 1 , or fly ash claim 1 , or ash claim 1 , or slag claim 1 , or a sulfur oxide claim 1 , or a combination thereof.6. The process of wherein said thermal decomposing is conducted in a low oxygen environment.7. The process of wherein said low oxygen environment comprises a concentration of gaseous diatomic oxygen of less than 20 ...

Novel compositions for improved concrete performance

A method for the preparation of industrial-scale concrete installations with improved compression strength, curling, cracking and cracking characteristics, the method comprising the addition of nanosilica particulate, and more preferably, colloidal amorphous silica, having specific size and surface area characteristics to a concrete mix after water has been added to the mix and the mix has been agitated. 1) A process for the preparation of a concrete installation , said process comprising the steps of: [ i) a manufacturer suggested water/cement ratio value; wherein said suggested ratio falls in the range of from about 3.5 to about 6.5; and whereupon combination with b), the water/cement ratio is greater than the value corresponding to about 10% less than the suggested value and not greater than the value corresponding to about 30% greater than the suggested value; or', 'ii) manufacturer suggested water/cement ratio range, having an upper value and a lower value, and whereupon combination with b) below, the water/cement ratio is greater than the value corresponding to about 10% less than of the lower value and less than the value corresponding to about 30% greater than the upper value; or', 'iii) an amount such that, whereupon combination with b) below, the water/cement ratio is in the range of from about 0.35 to 0.65;, 'a) a quantity of dry cement mix, said cement mix characterized by, 'b) a quantity of water,', {'sup': '2', 'c) a quantity of amorphous silica in the range of from about 0.1 to about 7.0 ounces per hundredweight of cement in a); wherein the average silica particle size is in the range of from 1 to 55 nanometers and/or wherein the surface area of the silica particles is in the range of from about 300 to about 900 m/g;'}, 'd) a quantity of aggregate and/or a quantity of sand in the range of from about 400 to about 700 wt % bwoc; and, 'A) creating a concrete mix from components, said components comprising each of the followingB) wherein the water of b) ...

Cement Kiln Exhaust Gas Pollution Reduction

A method for reducing pollution in a cement kiln environment and a system for treating cement kiln exhaust gas are provided. The method includes the steps of: treating a cement kiln exhaust gas stream with a treating fluid, such as a water soluble alkaline-earth metal sulfide. In one application, the treating fluid is injected by spraying droplets into the cement kiln exhaust gas stream. A system for treating cement kiln exhaust gas includes a reagent containing a water soluble alkaline-earth metal sulfide in water, and a nozzle to spray the reagent into the cement kiln exhaust gas stream. 1. A method for reducing pollution in a cement kiln environment comprising:treating a cement kiln exhaust gas stream with a treating fluid comprising a reagent containing a water soluble alkaline-earth metal sulfide by injecting said treating fluid into said cement kiln exhaust gas stream prior to a particulate collection system.2. The method of claim 1 , wherein said injecting further comprises spraying droplets of said treating fluid into said cement kiln exhaust gas stream.3. The method of claim 1 , wherein said treating further comprises injecting said treating fluid into said cement kiln exhaust gas stream at a point where said cement kiln exhaust gas stream has a temperature of about 350 degrees Fahrenheit.4. The method of claim 1 , wherein said treating further comprises injecting said treating fluid into said cement kiln exhaust gas stream subsequent to a first particulate collection system and prior to a second particulate collection system.5. The method of claim 1 , wherein said treating further comprises injecting said treating fluid into a gas resonance chamber carrying said cement kiln exhaust gas stream.6. The method of claim 1 , wherein said treating further comprises injecting said treating fluid into a duct carrying said cement kiln exhaust gas stream.7. The method of claim 2 , wherein said spraying said droplets further includes spraying said droplets having a ...

INTEGRATED CARBON DIOXIDE CAPTURE FOR CEMENT PLANTS

The present invention relates to a cement manufacturing plant includes a system for capturing carbon dioxide (CO) from an exhaust gas stream generated in the kiln of the cement manufacturing plant by using regenerative calcium cycle (RCC) into the cement manufacturing process. Also, the invention relates to a method of capturing carbon dioxide COfrom a carbon dioxide COrich exhaust gas stream generated in a cement kiln, wherein the method includes recirculation of the carbon dioxide COrich exhaust gas stream to a unit for carbonization. 1. A cement manufacturing plant comprising a system for capturing carbon dioxide (CO) from an exhaust gas stream generated in the kiln of the cement manufacturing plant by using regenerative calcium cycle (RCC) into the cement manufacturing process.2. The cement manufacturing plant according to wherein the system comprises a carbonator for capturing the carbon dioxide COpresent in the exhaust gas present in the plant.3. The cement manufacturing plant according to claim 2 , wherein the system comprises means for recirculation of the exhaust gas from the kiln to the carbonator downstream the kiln.4. The cement manufacturing plant according to claims 3 , wherein the carbonator is operating at temperature in the range between 550 and 750° C. claims 3 , preferably at 650° C.5. The cement manufacturing plant according to claim 2 , wherein a portion of the solids comprising calcium carbonate from the carbonator is transferred to the unit for treatment of the cement raw material; and the therein separated solids comprising calcium carbonate CaCOare transferred to a calciner.6. The cement manufacturing plant according to claim 5 , wherein the solids comprising calcium oxide from the calciner is partly transferred to the carbonator.7. The cement manufacturing plant according to claim 5 , wherein the system comprises one or more heat exchangers wherein the stream of calcium carbonate CaCOfrom the carbonator is preheated by the calcium oxide ...

Cement Production

The present invention provides a method and system for manufacturing cement wherein ground particles of cement and calcium sulfate are subjected to infrared sensors, laser sensors, or both, so that emanated, irradiated, transmitted, and/or absorbed energy having wavelengths principally within the range of 700 nanometers to 1 millimeter can be monitored and compared to stored data previously obtained from ground cement and sulfate particles and preferably correlated with stored strength, calorimetric, or other data values, such that adjustments can be made to the mill processing conditions, such as the form or amounts of calcium sulfate (e.g., gypsum, plaster, anhydride), or cement additive levels. The strength and other properties of cement can be thus adjusted, and its quality can be more uniform.

System for Manufacturing a Proportional Slurry

A novel apparatus for the manufacture of high solid content lime and/or cement slurry that can be used in stabilization applications. The novel apparatus uses nozzles directed at a diffusion baffle to insure proper wetting of the lime or cement based material in order to produce a sufficiently homogenous slurry that sufficiently remains in suspension so that it can be used in stabilization applications without the need for additional mixing. 1. A slurry mixing station comprising:a mixing tank;a slurry outlet pipe;a first nozzle directed into the mixing tank at a point that is below the level of fluid in the mixing tank during operation and adapted to inject fluid into the mixing tank;a second nozzle directed into the mixing tank near the first nozzle and adapted to inject a cement or lime material into the mixing tank;an outlet port in the mixing tank at the opposite end from the first and second nozzles;a recirculating pump in fluid communication with the outlet port and selectively in fluid communication with the first nozzle and the slurry output pipe;a mixing transfer valve adapted to selectively direct fluid from the recirculating pump to the first nozzle or the slurry output pipe;a diffusion baffle located within the mixing tank, wherein the diffusion baffle is located from about 2 to about 10 feet from the first and second nozzles and wherein the diffusion baffle has openings in it that are from about 1 to about 3 inches;wherein the first and second nozzles are each directed at the diffusion baffle such that the material exiting the second nozzle and the fluid exiting the first nozzle collide at the diffusion baffle.2. The slurry mixing station of further comprising at least one access port in the top of the mixing tank for the addition of additives to the mixing tank.3. The slurry mixing station of claim 1 , wherein the mixing tank is secured to a base using load cells and the load cells are adapted to measure the weight of the contents of the mixing tank.4. ...

APPARATUS FOR PRODUCING CEMENT CLINKER

An apparatus for producing cement clinker, comprising a kiln for calcining raw materials to form cement clinker, comprising a preheating stage for preheating the raw materials in a counter-flow to kiln off-gases, comprising a clinker cooler for cooling the cement clinker, comprising a denoxing stage for denoxing kiln off-gases, comprising a heat exchanger for heating the kiln off-gases upstream of the denoxing stage by heat exchange with a heat exchange medium, comprising at least one further heat exchanger for heating the heat exchange medium by heat exchange with kiln off-gases or exhaust air of the clinker cooler, wherein the heat exchanger is connected to the further heat exchanger via a line for the heat exchange medium, wherein a hot gas filter is arranged in the flow direction upstream of the further heat exchanger. 1. An apparatus for producing cement clinker , comprising a kiln for calcining raw materials to form cement clinker , comprising a preheating stage for preheating the raw materials in a counter-flow to kiln off-gases , comprising a clinker cooler for cooling the cement clinker , comprising a denoxing stage for denoxing kiln off-gases , comprising a heat exchanger for heating the kiln off-gases upstream of the denoxing stage by heat exchange with a heat exchange medium , comprising at least one further heat exchanger for heating the heat exchange medium by heat exchange with kiln off-gases or exhaust air of the clinker cooler , wherein the heat exchanger is connected to the further heat exchanger via a line for the heat exchange medium , wherein a hot gas filter is arranged in the flow direction upstream of the further heat exchanger.2. The apparatus according to claim 1 , wherein a hot gas filter and a further heat exchanger are arranged in a kiln off-gas line between the preheating stage and a raw mill for grinding the raw materials.3. The apparatus according to claim 1 , wherein a hot gas filter and a further heat exchanger are arranged in a ...

METHOD FOR MANUFACTURING CEMENT

The present invention pertains to a method for manufacturing cement, wherein the gypsum is first calcined separately before being inter-grinded with the clinker so as to minimize the release of water of crystallization of during the inter-grinding stage. The method produces cement of high strength at all ages, better rheology, enables higher use of fly ash, and reduces COemission during manufacturing. 1. Method of manufacturing cement , the method comprising:(a) determining or fixing the highest temperature T° C. that the working mix is expected to reach inside the mill during inter-grinding gypsum (or a dehydrated form thereof) with clinker;(b) calcining the gypsum at a temperature W° C., such that W>=0.9 T; and(c) inter-grinding the pre-calcined gypsum with the clinker inside mill such that the highest temperature of working mix inside the mill does not exceed T° C.,wherein that the change in water of crystallization of gypsum (or a dehydrated form thereof) during inter-grinding with clinker in step (c) is minimal.2. Method of manufacturing cement as claimed in claim 1 , wherein the gypsum is precalcined at a temperature such that more than 50% of gypsum is dehydrated to hemihydrate form [CaSO.½HO].3. Method of manufacturing cement as claimed in claim 1 , wherein the gypsum is precalcined at a temperature such that more than 80% of gypsum is dehydrated to hemihydrate form [CaSO.½HO].4. Method of manufacturing cement as claimed in claim 2 , wherein W is about 100° C. to about 120° C.5. Method of manufacturing cement as claimed in claim 2 , wherein T is about 110° C.6. Method of manufacturing cement as claimed in claim 1 , wherein the gypsum is precalcined at a temperature such that more than 50% of gypsum is dehydrated to a form of calcium sulphate with water of crystallization less than 0.5 [CaSO4.nH2O claim 1 , where 0.5>n>0].7. Method of manufacturing cement as claimed in claim 1 , wherein the gypsum is precalcined at a temperature such that more than 80% of ...

NOx Reduction Process in a Cement Kiln Manufacturing System

Disclosed is a bypass system for use with off gases that have exited a cement kiln utilized in a cement making process. The bypass system is adapted to remove both NOx and volatile components that are present in the off gases while the off gases are in the bypass duct. 1. A bypass system for use with off gases that have exited a cement kiln utilized in a cement making process comprising:i) means to direct from about 10% to about 70% by mass of the off gases into a bypass duct;ii) means to remove NOx present in the off gases while the off gases are in the bypass duct; andiii) means to remove volatile components present in the off gases while the off gases are in the bypass duct.2. (canceled)3. The bypass system of wherein the off gases are redirected to the cement making process after the NOx and volatile components removal steps.4. The bypass system of wherein the off gases are inserted into a raw meal crushing means after the NOx and volatile components removal steps.5. A process to remove NOx from dust and volatile containing off gases from a cement kiln as said kiln is being utilized in a cement making process comprising:i) withdrawing the NOx containing kiln off gases from a location in the cement making process at which the temperature of such off gases is at least about 1150° C.;ii) reducing the temperature of such gases to a temperature that is suitable for reagent injection; andiii) inserting a reagent into the off gases, said reagent reacting with the NOx in the off gases to thereby remove NOx from said off gases.6. The process of wherein the reagent is ammonia or urea.7. The process of further comprising claim 5 , following the reagent insertion step claim 5 , subjecting the off gases to a second temperature reducing step to condense volatiles on the dust present in the kiln off gases The present invention relates to an apparatus and a method for reducing the quantity of volatile components such as chloride, alkali and sulfur which are introduced to a ...

Process for the Production of Metal Oxides or Citric Acid

The present application pertains to methods for making metal oxides and/or citric acid and/or capturing carbon dioxide. In one embodiment, the application pertains to a process for producing calcium oxide, magnesium oxide, or both from a material comprising calcium and magnesium. The process may include reacting a material comprising calcium carbonate and magnesium carbonate. Separating, concentrating, and calcining may lead to the production of oxides such as calcium oxide or magnesium oxide. In other embodiments the application pertains to methods for producing an alkaline-earth oxide and a carboxylic acid from an alkaline earth cation-carboxylic acid anion salt. Such processes may include, for example, reacting an alkaline-earth cation-carboxylic acid anion salt with aqueous sulfur dioxide to produce aqueous alkaline-earth sulfite or bisulfate and an aqueous carboxylic acid solution. Other useful steps may include desorbing, separating, and/or calcining.

METHOD FOR DECREASING AN AMOUNT OF A HARMFUL SUBSTANCE OF AN OFF-GAS STREAM FORMED OR USED IN A THERMAL TREATMENT OF A MATERIAL

A method for decreasing an amount of a harmful substance of a chlorine-containing off-gas stream formed or used in a thermal treatment of a material may comprise dividing the chlorine-containing off-gas stream into a main stream and a substream, separating at least some chlorine from the main stream, lowering an amount of the harmful substance in the main stream by introducing a chlorine-containing additive into the main stream to enhance separation of the harmful substance, and filtering the substream such that a filter cake separated from the substream comprises at least part of the chlorine-containing additive. 1. A method for decreasing an amount of a harmful substance of a chlorine-containing off-gas stream formed or used in a thermal treatment of a material , the method comprising:dividing the chlorine-containing off-gas stream into a main stream and a substream;separating at least some chlorine from the main stream;lowering an amount of the harmful substance in the main stream by introducing a chlorine-containing additive into the main stream to enhance separation of the harmful substance; andfiltering the substream such that a filter cake separated from the substream comprises at least part of the chlorine-containing additive.2. The method of for decreasing an amount of sulphur content in the off-gas stream claim 1 , the method further comprising:introducing a calcium-containing additive into the off-gas stream; andfiltering off at least one of calcium sulphite or calcium sulphate from the off-gas stream,wherein a reaction of at least one of sulphur dioxide or sulphur trioxide in the off-gas stream forms at least one of calcium sulphite or calcium sulphate.3. The method of wherein the separation of the at least some chlorine from the main stream is caused by cooling the main stream during the thermal treatment of the material.4. The method of for decreasing an amount of sulphur content in the off-gas stream claim 3 , the method further comprising:introducing ...

Method and Apparatus for Producing Cement Clinker

In methods of and/or plants for manufacturing cement clinker, the amount of chloride bypass exhaust gas 79 can be substantially decreased, when using previously cooled chloride bypass exhaust gas 81 and/or cooled kiln exhaust gas as coolant for the chloride bypass exhaust gas 39 prior to deducting the chloride bypass exhaust gas 39.

Processes Producing Alkali Hydroxides, Alkali Carbonates, Alkali Bicarbonates, and/or Alkaline Earth Sulfates

The present application pertains to methods for making alkali hydroxide, or alkali carbonates, or alkali bicarbonates, or alkaline—earth sulfates. In one embodiment, a material comprising an alkaline earth is converted to an alkaline earth sulfite or bisulfite and reacted with an alkali sulfate to form an alkaline earth sulfate and alkali sulfite or bisulfite. The alkali sulfite or bisulfite is converted into an alkali hydroxide, or an alkali carbonate, or an alkali bicarbonate. In another embodiment, ammonium carbonate or ammonium bicarbonate is reacted with an alkali sulfate, to form ammonium sulfate and an alkali carbonate or alkali bicarbonate. A material comprising an alkaline earth is converted to an alkaline earth sulfite or bisulfite and reacted with the ammonium sulfate to form an alkaline earth sulfate and ammonium sulfite or ammonium bisulfite. The ammonium sulfite or bisulfite is regenerated into ammonia, or ammonium hydroxide, or ammonium carbonate, or ammonium bicarbonate.

USE OF CLINKER KILN DUST FOR GAS SCRUBBING

Methods and apparatus for reducing the content of controlled acidic pollutants in clinker kiln emissions are disclosed. The methods and apparatus include introducing bypass dust produced during production of clinker into one or more locations between the preheater exhaust and the inlet to a dust filter including into a gas conditioning tower. Total bypass dust separated from the kiln exhaust gas may be used. The bypass dust can be separated into a fine and coarse portions. Fine or total bypass dust can be mixed with water to form a bypass dust slurry that can be introduced into the gas conditioning tower. Bypass dust can be used to reduce the content of acidic pollutants such as hydrogen chloride HCl and sulfur oxides SOfrom clinker kiln emissions. 1. A clinker plant comprising: a preheater exhaust exit;', 'a gas conditioning tower directly coupled to the preheater exhaust exit; and', 'an inlet to a dust filter directly coupled to the gas conditioning tower;, 'a gas conditioning system configured to process exhaust gases from a clinker kiln, wherein the gas conditioning system comprisesa first separator for separating dust generated during operation of the clinker kiln from the exhaust gases to provide bypass dust;at least one device for introducing the bypass dust into the gas conditioning system, wherein the at least one device is operatively coupled to the first separator.2. The clinker plant of claim 1 , wherein the bypass dust comprises total bypass dust claim 1 , fine bypass dust claim 1 , coarse bypass dust claim 1 , a slurry comprising total bypass dust claim 1 , a slurry comprising fine bypass dust claim 1 , a slurry comprising coarse bypass dust claim 1 , or a combination of any of the foregoing.3. The clinker plant of claim 2 , wherein claim 2 ,the coarse bypass dust is characterized by an average mean particle diameter greater than 100 μm; andthe fine bypass dust is characterized by an average mean particle diameter less than 100 μm.4. The clinker plant ...

METHODS FOR FORMULATING A CEMENT SLURRY FOR USE IN A SUBTERRANEAN SALT FORMATION

Methods of formulating a cement slurry for use in a subterranean salt formation, including methods for formulating a cement slurry capable of providing long-term zonal isolation within a subterranean salt formation. The methods also take into account the effects of treatment fluids on the cement slurry, such as drilling fluids, spacer fluids, flush fluids, or other relevant fluids used to perform a subterranean formation operation. 1. A method comprising:(a) calculating a theoretical first wellbore radius for a wellbore in a subterranean salt formation having a treatment fluid therein based on salt creep analysis in the presence of formation-treatment fluid;(b) calculating a theoretical second wellbore radius in the subterranean salt formation during a cementing operation with a proposed cement slurry based on salt creep analysis in the presence of formation-cement slurry;(c) calculating a theoretical final wellbore radius in the subterranean salt formation based on the theoretical first wellbore radius, the theoretical second wellbore radius, and salt dissolution expected after a proposed cement sheath is theoretically formed;(d) calculating theoretically whether the proposed cement sheath is capable of withstanding a wellbore load by calculating theoretical thermal and thermo-mechanical properties of the proposed cement slurry based on salt creep analysis in the presence of formation-cement sheath;(e) determining experimentally whether the proposed cement sheath is capable of withstanding the wellbore load based on actual thermal and thermo-mechanical properties of the proposed cement slurry after salt dissolution;(f) calculating theoretically a theoretical pump time and a theoretical pump pressure for the treatment fluid and the proposed cement slurry;(g) determining experimentally whether the theoretical pumping time for the treatment fluid and the proposed cement slurry will permit formation of the proposed cement sheath in the wellbore without substantial ...

PROCESS FOR PRODUCING A CEMENT CLINKER AT LOW TEMPERATURE

The invention provides a process for producing a cement clinker comprising: (i) mixing one or more starting materials providing each at least one or more of CaO, SiO, AIO, and FeO; and, optionally, SO, to form a raw meal comprising CaO, SiO, AIO, and FeO; and, optionally, SO, wherein the molar ratios among the aforementioned oxides is given by Formula I: S(CaO)(SiO)(AlO)(FeO)(SO), wherein: “a” is comprised from 0.05 to 1, “b” is comprised from 0.1 to 0.6, “c” is comprised from 0.001 to 0.25, and “d” is comprised from 0 to 0.3 and wherein at least 35% (p/p) of the starting materials of the raw meal have a critical microwaves absorbance temperature (Tc) comprised from 15 to 650° C. and a critical microwaves absorbance time (tc) comprised from 1 min to 1 h; (ii) heating the raw meal by irradiating with microwaves during 15 min to 3 h to reach a sintering temperature comprised from 300 to 950° C.; (iii) maintaining the microwave sintering temperature of step (ii) during 1 min to 3 h by further irradiating with microwaves; and (iv) cooling the clinker obtained in step (iii). 1. A process for producing a cement clinker comprising the steps of:{'sub': 2', '2', '3', '2', '3', '2', '3', '2', '3', '3, 'claim-text': {'br': None, 'sub': 1', '2', 'a', '2', '3', 'b', '2', '3', 'c', '3', 'd, '(CaO)(SiO)(AlO)(FeO)(SO)\u2003\u2003(Formula I)'}, '(i) mixing one or more starting materials providing each: at least one or more of CaO, SiO, AlO, and FeO; and, optionally, SO3; and/or at least other one or more compounds comprising the elements of these oxides, to form a raw meal comprising CaO, SiO, Al2O, and FeO; and, optionally, SO; and/or at least other one or more compounds comprising the elements of these oxides, wherein the molar ratios among the aforementioned oxides and/or other one or more compounds comprising the elements of these oxides is given by Formula Iwherein:“a” is comprised from 0.05 to 1,“b” is comprised from 0.1 to 0.6,“c” is comprised from 0.001 to 0.25, and“d” is ...

Waste gas treatment device and method for treating waste gas

An offgas treatment apparatus having a reduction catalyst and an oxidation catalyst downstream of the reduction catalyst may also include a temperature-affecting apparatus for the offgas positioned between the reduction catalyst and the oxidation catalyst. In some examples, the apparatus may include a second temperature-affecting apparatus for the offgas positioned upstream of the reduction catalyst. At least one of the first or second temperature affecting apparatuses may comprise a heat exchanger, a preheating apparatus, an auxiliary heater, or a mixing-in device for a fluid, for instance. In some examples, the apparatus may involve a dust filter positioned upstream of the reduction catalyst.

Ready-mix concrete production utilizing carbon capture and related systems

An illustrative method for CO2 sequestration may include the step of sequestering at least a portion of a CO2 gas emitted during operation of the ready-mix concrete production system in (i) a ready-mix concrete produced by the read-mix concrete production system, and/or (ii) calcium carbonate formed by processing water used during operation of the ready-mix concrete production and delivery system.

INSTALLATION COMPRISING AN EXHAUST GAS-GENERATING TREATMENT DEVICE, AN OXIDATION CATALYTIC CONVERTER AND A REDUCTION CATALYTIC CONVERTER, AS WELL AS A METHOD FOR TREATING EXHAUST GAS IN SUCH AN INSTALLATION

A plant may include an offgas-producing treatment apparatus for mechanical and/or thermal treatment of an inorganic material, an oxidation catalyst downstream of the offgas-producing treatment apparatus in a flow direction of the offgas, a reduction catalyst downstream of the oxidation catalyst in the flow direction of the offgas, and a temperature-affecting apparatus for affecting the temperature of the offgas upstream of the oxidation catalyst and/or between the oxidation catalyst and the reduction catalyst. In some examples, the the temperature-affecting apparatus is controllable and may comprise at least one of an auxiliary preheater, a mixing-in device for a fluid, or a heat exchanger. 114.-. (canceled)15. A plant comprising:an offgas-producing treatment apparatus for at least one of mechanical or thermal treatment of an inorganic material;an oxidation catalyst downstream of the offgas-producing treatment apparatus in a flow direction of the offgas;a reduction catalyst downstream of the oxidation catalyst in the flow direction of the offgas; anda temperature-affecting apparatus for affecting a temperature of the offgas, wherein the temperature-affecting apparatus is positioned upstream of the oxidation catalyst or between the oxidation catalyst and the reduction catalyst.16. The plant of wherein the temperature-affecting apparatus comprises at least one of an auxiliary preheater claim 15 , a mixing-in device for a fluid claim 15 , or a heat exchanger.17. The plant of wherein the temperature-affecting apparatus is controllable with regard to affecting the temperature of the offgas.18. The plant of further comprising a material preheater that is positioned between the offgas-producing treatment apparatus and the oxidation catalyst claim 15 , wherein heat is transferred from the offgas to the inorganic material in the material preheater.19. The plant of wherein the material preheater comprises one or more heat exchanger stages claim 18 , wherein a first feed for ...

Method and plant for denitrifying bypass gases in a multi-stage system of mixing chambers in a plant for producing cement clinker

A method and a corresponding plant for denitrifying bypass exhaust gases in a cement clinker production plant. Raw meal is sintered in a rotary kiln and deacidified in a calciner. A rotary kiln inlet chamber is connected to the calciner directly or by a riser duct. Bypass exhaust gas is drawn off near the inlet chamber. This exhaust gas is guided into a first mixing chamber, in which the exhaust gas is cooled to between 800 and 950° C., then the exhaust gas is guided through a reaction pipeline segment, wherein the dwell time is between 0.5 and 3 seconds and ammonia, aqueous ammonia solution, or ammonia-releasing substances are injected for denitrification. Then the exhaust gas is guided into a second mixing chamber, in which the exhaust gas is cooled to between 150 to 250° C. Then the exhaust gas is guided to a filter for dust removal.

Method for exhaust gas treatment, and system comprising an exhaust gas treatment device

A method for treating exhaust gas in an exhaust gas treatment device of a system may involve withdrawing exhaust gas from a processing device for mechanically and/or thermally processing an inorganic material of the system. The material to be fed to the processing device may be preheated by heat exchange with the exhaust gas. Further, a temperature of the exhaust gas entering the exhaust gas treatment device may be adjusted by adapting the exchange of heat between the exhaust gas and the inorganic material. In some examples, the exhaust gas treatment device may comprise an oxidation catalytic converter and/or a reduction catalytic converter.

Integration of Molten Carbonate Fuel Cells in Cement Processing

In various aspects, systems and methods are provided for operating molten carbonate fuel cells with processes for cement production. The systems and methods can provide process improvements including increased efficiency, reduction of carbon emissions per ton of product produced, and simplified capture of the carbon emissions as an integrated part of the system. The number of separate processes and the complexity of the overall production system can be reduced while providing flexibility in fuel feed stock and the various chemical, heat, and electrical outputs needed to power the processes.

METHOD AND SYSTEM FOR PRODUCING CEMENT CLINKER FROM RAW CEMENT MIXTURE

The invention relates to a method and a system for producing cement clinker from raw cement mixture, wherein one part of the raw cement mixture is preheated in a calciner preheater, and the other part of the raw cement mixture is preheated in an oven preheater, the preheated raw cement mixture is pre-calcined in a calciner which is operated according to the oxyfuel method, the pre-calcined raw cement mixture is fired in an oven, the fired raw cement mixture is cooled in a cooler, the calciner preheater is operated using exhaust gases of the calciner, the oven preheater is operated using exhaust gases of the oven, an entrained flow reactor is used as the calciner, a part of the calciner exhaust gas being recirculated to the calciner after being used in the calciner preheater, and the oven exhaust gas undergoes a post-combustion COseparation. 1. A process for producing cement clinker from cement raw meal , comprising:a. part of the cement raw meal is preheated in a calciner preheater and the other part of the cement raw meal is preheated in a furnace preheater;b. the cement raw meal which has been preheated in the calciner preheater and in the furnace preheater is precalcined in a calciner operated by the oxy-fuel process;c. the precalcined cement raw meal is fired in a furnace;d. the fired cement raw meal is cooled in a cooler;e. the calciner preheater is operated using calciner exhaust gases from the calciner; andf. the furnace preheater is operated using furnace exhaust gases from the furnace,characterized in thatg. an entrained flow reactor is used as calciner, with a part of the calciner exhaust gas being, after having been utilized in the calciner preheater, recirculated to the calciner and{'sub': '2', 'h. the furnace exhaust gas is subjected to a post-combustion removal of CO.'}2. The process of claim 1 , wherein the part of the calciner exhaust gas which is recirculated to the calciner is heated by means of exhaust gases from the cooler.3. The process of claim ...

Method for predicting quality or manufacturing condition of cement

Provided is a method capable of predicting the quality of cement in a short time period and with high accuracy. The method of predicting the quality or manufacturing conditions of cement through use of a neural network including an input layer and an output layer includes: performing learning of the neural network for a sufficiently large number of times of learning such that σ L <σ M is obtained, using learning data and monitor data; then repeating the learning of the neural network until σ L ≧σ M is obtained while the number of times of learning is decreased; inputting specific observation data to the input layer of the neural network in which a judgment value for analysis degree obtained from the neural network after the learning is less than a preset value; and outputting an estimated value of specific evaluation data from the output layer of the neural network.

EFFICIENT INTEGRATION OF MANUFACTURING OF UPCYCLED CONCRETE PRODUCT INTO POWER PLANTS

A manufacturing process of a concrete product includes: (1) extracting calcium from solids as portlandite; (2) forming a cementitious slurry including the portlandite; (3) shaping the cementitious slurry into a structural component; and (4) exposing the structural component to carbon dioxide sourced from a flue gas stream, thereby forming the concrete product. 1. A manufacturing process of a concrete product , comprising:extracting calcium from solids as portlandite;forming a cementitious slurry including the portlandite;shaping the cementitious slurry into a structural component; andexposing the structural component to carbon dioxide sourced from a flue gas stream, thereby forming the concrete product.2. The manufacturing process of claim 1 , wherein the solids include at least one of iron slag or steel slag.3. The manufacturing process of claim 1 , wherein extracting the calcium includes subjecting the solids to dissolution in a reactor to yield an ion solution claim 1 , and wherein the leaching reactor is operated using heat sourced from the flue gas stream.4. The manufacturing process of claim 3 , wherein extracting the calcium further includes inducing precipitation of the ion solution in a precipitation reactor to yield the portlandite claim 3 , and wherein the precipitation reactor is operated using heat sourced from the flue gas stream.5. The manufacturing process of claim 1 , wherein forming the cementitious slurry includes combining a combustion residual with the portlandite.6. The manufacturing process of claim 1 , wherein shaping the cementitious slurry includes casting claim 1 , extruding claim 1 , molding claim 1 , pressing claim 1 , or 3D printing of the cementitious slurry.7. The manufacturing process of claim 1 , wherein exposing the structural component includes exposing claim 1 , during an initial time period claim 1 , the structural component to a first gas reactant having a first carbon dioxide concentration claim 1 , followed by exposing claim ...

Integrated power generation and carbon capture using fuel cells

Systems and methods are provided for capturing CO 2 from a combustion source using molten carbonate fuel cells (MCFCs). At least a portion of the anode exhaust can be recycled for use as a fuel for the combustion source. Optionally, a second portion of the anode exhaust can be recycled for use as part of an anode input stream. This can allow for a reduction in the amount of fuel cell area required for separating CO 2 from the combustion source exhaust and/or modifications in how the fuel cells can be operated.

Integration of Molten Carbonate Fuel Cells in Fischer-Tropsch Synthesis

In various aspects, systems and methods are provided for integration of molten carbonate fuel cells with a Fischer-Tropsch synthesis process. The molten carbonate fuel cells can be integrated with a Fischer-Tropsch synthesis process in various manners, including providing synthesis gas for use in producing hydrocarbonaceous carbons. Additionally, integration of molten carbonate fuel cells with a Fischer-Tropsch synthesis process can facilitate further processing of vent streams or secondary product streams generated during the synthesis process.

PROCESS AND DEVICE FOR SEPARATING OFF A VOLATILE COMPONENT

A process and device separate off a volatile component from the off-gases in cement clinker production. Raw materials for cement clinker production are passed through a preheater with heat exchange with the off-gases and are then burnt in a rotary kiln. Owing to the heating in the preheater, the volatile component bound in the raw materials is vaporized and separated off. A first raw material stream having a relatively high concentration of the volatile component is applied to a first line of the preheater and a second raw material stream having a lower concentration of the volatile component is applied to a second line. The volatile component is separated off from the first substream of the off-gases. The first raw material stream heated to a temperature of at least 250° C. with the first substream of the off gases in the first line is combined with the second raw material stream. 1. A process for separating off at least one volatile component from off-gases in cement clinker production , which comprises the steps of: feeding a first raw material stream having a higher concentration of the volatile component into a first line of the preheater, wherein the first line of the preheater being operated with a first substream of the off-gases of the rotary kiln;', 'feeding a second raw material stream having a lower concentration of the volatile component than in the first raw material stream into a second line of the preheater, the second line of the preheater being operated with a second substream of the off-gases of the rotary kiln;', 'separating off the volatile component from the first substream of the off-gases passed through the first line of the preheater; and', 'combining the first raw material stream heated to a temperature of at least 250° C. by heat exchange with the first substream of the off-gases in the first line of the preheater, at a generally constant temperature of at least 250° C., with the second raw material stream of the second line of the ...

Cement kiln fuel treatment

A method of treating cement kiln fuel includes introducing an additive to a fuel component to form a fuel mixture. The fuel component includes a sulfur-generating combustible fuel and the additive includes a micronized lime component. The method further includes combusting the fuel component within a cement kiln. The sulfur generated by the combustion of the combustible fuel forms calcium-containing sulfur compounds with lime provided by the micronized lime component. The calcium-containing sulfur compounds fall to a bed of clinker forming beneath the flame and some portion thereof may become resident in the clinker.

PROCESS AND DEVICE FOR SEPARATING OFF A VOLATILE COMPONENT

A process and device separate off a volatile component from the off-gases in cement clinker production. Raw materials for cement clinker production are passed through a preheater with heat exchange with the off-gases and are then burnt in a rotary kiln. Owing to the heating in the preheater, the volatile component bound in the raw materials is vaporized and separated off. A first raw material stream having a relatively high concentration of the volatile component is applied to a first line of the preheater and a second raw material stream having a lower concentration of the volatile component is applied to a second line. The volatile component is separated off from the first substream of the off-gases. The first raw material stream heated to a temperature of at least 250° C. with the first substream of the off gases in the first line is combined with the second raw material stream. 129-. (canceled)30. A process for separating off at least one volatile component from off-gases in cement clinker production , which comprises the steps of: feeding a first raw material stream having a higher concentration of the volatile component into a first line of the preheater, wherein the first line of the preheater being operated with a first substream of the off-gases of the rotary kiln;', 'feeding a second raw material stream having a lower concentration of the volatile component than in the first raw material stream into a second line of the preheater, the second line of the preheater being operated with a second substream of the off-gases of the rotary kiln;', 'separating off the volatile component from the first substream of the off-gases passed through the first line of the preheater; and', 'combining the first raw material stream heated to a temperature of at least 250° C. by heat exchange with the first substream of the off-gases in the first line of the preheater, at a generally constant temperature of at least 250° C., with the second raw material stream of the second ...

LOW NOx CALCINER

A system for reducing NOx emission levels during the manufacture of cement clinker having a calciner unit with the following features: an upper portion; a lower portion; a NOx reduction zone in the lower portion; a tertiary air inlet in the upper portion for introducing tertiary air into the upper portion; a main calciner meal inlet located above the NOx reduction zone for introducing a main calciner meal portion into the upper portion; a first cooling calciner meal inlet located in the NOx reduction zone for introducing a first cooling calciner meal portion into a periphery of the NOx reduction zone; and a fuel inlet located in or below the NOx reduction zone for introducing fuel into the reduction zone. 1111. A system () for reducing NOx emission levels during the manufacture of cement clinker comprising a calciner unit () further comprising:{'b': '11', 'i': 'a', 'an upper portion ();'}{'b': '11', 'i': 'b', 'a lower portion ();'}{'b': 12', '11', '12, 'i': b', 'a, 'a NOx reduction zone () in the lower portion () having a refractory layer () on the inside surface thereof;'}{'b': 13', '11', '11, 'i': a', 'a, 'a tertiary air inlet () in the upper portion () for introducing tertiary air into the upper portion ();'}{'b': 20', '12', '11, 'i': 'a', 'a main calciner meal inlet () located above the NOx reduction zone () for introducing a main calciner meal portion into the upper portion ();'}{'b': 30', '12', '12', '12', '12, 'i': a', 'a, 'a first cooling calciner meal inlet () located in the NOx reduction zone () for introducing a first cooling calciner meal portion into a periphery of the NOx reduction zone () for forming a peripheral layer of meal in the NOx reduction zone () for protecting the refractory layer () from hot kiln gas; and'}{'b': 50', '12', '12', '12, 'i': 'a', 'a fuel inlet () located in or below the NOx reduction zone () for introducing fuel into the NOx reduction zone () for supporting a hot core of the hot kiln gas within the peripheral layer of the meal ...

PROCESS FOR THE PURIFICATION OF WASTE MATERIALS OR INDUSTRIAL BY-PRODUCTS COMPRISING CHLORINE

The present application relates to a process for the purification of waste materials or industrial by-products, the process comprising the steps of: a) Preparing a composition (C) by blending or mixing waste materials or industrial by-products comprising chlorine (B) with one or more materials comprising heavy metals (HM) b) Reacting (B) and (HM) by thermal treatment of (C) c) Separating evaporated heavy metal chloride compounds (HMCC) d) Obtaining a solid material after the thermal treatment step. 1. Process for the purification of waste materials or industrial by-products comprising chlorine (B) , the process comprising the steps of:a) Preparing a composition (C) by blending or mixing waste materials or industrial by-products comprising chlorine (B) with one or more materials comprising heavy metals (HM)b) Reacting (B) and (HM) by thermal treatment of (C)c) Separating evaporated heavy metal chloride compounds (HMCC)d) Obtaining a solid material after the thermal treatment step, the heavy metals (HM) are one or more from the following set of elements: Zn, Pb, Hg, Cu, Cd, Tl, In, Sn, Ni, Co', 'the thermal treatment is carried out at a temperature of 500-1200° C. and under a non-oxidizing atmosphere,', 'the materials comprising heavy metals (HM) and the waste materials or industrial by-products comprising chlorine (B) being mixed or blended in the presence of water, with 2-50% by mass, preferably 5-30% by mass, more preferably 10-20% by mass, of water being present in the total composition (C), and', 'the ratio of the materials comprising heavy metals (HM) and the waste materials or industrial by-products comprising chlorine (B) is chosen so that the chlorine content of the composition (C) is between 100 and 150%, preferably between 100 and 130%, most preferably between 100 and 110%, of the amount being necessary for a stoichiometric conversion of the heavy metals (HM) in the materials comprising heavy metals (HM) into chlorides, or', 'the ratio of the materials ...

Processes for the Production of Citric Acid

The present application pertains to methods for making metal oxides and/or citric acid. In one embodiment, the application pertains to a process for producing calcium oxide, magnesium oxide, or both from a material comprising calcium and magnesium. The process may include reacting a material comprising calcium carbonate and magnesium carbonate. Separating, concentrating, and calcining may lead to the production of oxides such as calcium oxide or magnesium oxide. In other embodiments the application pertains to methods for producing an alkaline-earth oxide and a carboxylic acid from an alkaline earth cation—carboxylic acid anion salt. Such processes may include, for example, reacting an alkaline-earth cation—carboxylic acid anion salt with aqueous sulfur dioxide to produce aqueous alkaline-earth—bisulfite and aqueous carboxylic acid solution. Other useful steps may include desorbing, separating, and/or calcining.

ADDITIVE FOR CEMENTITIOUS MATERIALS

The invention relates to use of nano-fibrillar cellulose as an gas-entrainment stabilizer, which when used in cementitious materials, provides improved gas pore structure quality and/or stability and/or robustness with regard to water content variation. The invention further relates to a method for stabilizing gasentrainment of cementitious materials and to a method for providing cementitious material with improved air pore structure quality and/or stability and/or robustness with regard to water content variation. 1. Use of nanofibrillar cellulose (NFC) as a gas-entrainment stabilizer.2. The use as claimed claim 1 , wherein NFC is used in a cementitious composition claim 1 , paste claim 1 , or material.3. The use as claimed in claim 1 , wherein the diameter of the NFC or NFC bundles is less than 1 μm claim 1 , preferably less than 200 nm claim 1 , more preferably less than 100 nm.4. The use as claimed in claim 1 , wherein the used amount of dry NFC is 0.01% or more by weight based on dry weight of binder in the cementitious composition claim 1 , preferably from 0.01% to 0.3% claim 1 , more preferably from 0.02% to 0.2% claim 1 , most preferably from 0.05% to 0.11%.5. The use as claimed in claim 1 , wherein the NFC is native NFC.6. The use as claimed in claim 1 , wherein the NFC is chemically and physically modified NFC claim 1 , preferably anionically charged NFC claim 1 , more preferably particular oxidized NFC or carboxymethylated NFC claim 1 , most preferably mechanically disintegrated TEMPO oxidized NFC.7. The use as claimed in claim 1 , wherein NFC is used together with at least one gas-entraining agent or admixture.8. The use of NFC as claimed in for providing gas-entrained cementitious material with improved gas pore structure quality and/or stability and/or robustness with regard to water content variation.9. The use as claimed in claim 8 , wherein the gas-entrained cementitious material is air-entrained cementitious material claim 8 , such as concrete ...

METHODS FOR FORMULATING A CEMENT SLURRY FOR USE IN A SUBTERRANEAN SALT FORMATION

Methods of formulating a cement slurry for use in a subterranean salt formation, including methods for formulating a cement slurry capable of providing long-term zonal isolation within a subterranean salt formation. The methods also take into account the effects of treatment fluids on the cement slurry, such as drilling fluids, spacer fluids, flush fluids, or other relevant fluids used to perform a subterranean formation operation. 1. A method comprising:(a) calculating a theoretical first wellbore radius in a subterranean salt formation having a treatment fluid therein based on salt creep analysis in the presence of formation-treatment fluid; 'wherein the cementing operation involves forming a proposed cement sheath within the wellbore, and wherein the proposed cement sheath must withstand a wellbore load to prevent failure of the cement sheath in the wellbore;', '(b) calculating a theoretical second wellbore radius in the subterranean salt formation during a cementing operation with a proposed cement slurry based on salt creep analysis in the presence of formation-cement slurry,'}(c) determining experimentally a rheology of the proposed cement slurry versus salt dissolution curve;(d) determining experimentally and based on a convection-diffusion equation a salt dissolution versus flow rate curve;(e) calculating a theoretical final wellbore radius in the subterranean salt formation based on the theoretical first wellbore radius, the theoretical second wellbore radius, and salt dissolution after forming the proposed cement sheath;(f) determining a rheology of the proposed cement slurry versus flow rate curve;(g) calculating theoretically whether the proposed cement sheath is capable of withstanding the wellbore load by calculating theoretical thermal and thermo-mechanical properties of the proposed cement slurry based on salt creep analysis in the presence of formation-cement sheath;(h) determining experimentally whether the proposed cement sheath is capable of ...

METHOD AND APPARATUS FOR REDUCING THE NOX EMISSIONS IN A ROTARY KILN

In a method for reducing the NOx emissions of a rotary kiln of a clinker production plant, fuel supplied through a burner of the rotary kiln is burned along with primary air fed through the burner, wherein the primary air has a lower oxygen content and the primary air has an oxygen content reduced relative to that of the ambient air and a temperature increased relative to that of the ambient air, and the primary air is obtained by mixing ambient air with exhaust gas from the rotary kiln or from a heat exchanger connected to the rotary kiln and used for preheating raw meal. The primary air is further obtained by mixing with hot air, in particular waste air from a clinker cooler. 1. A method for reducing the NOx emissions of a rotary kiln of a clinker production plant , in which fuel supplied through a burner of the rotary kiln is burned along with primary air fed through the burner and the primary air has an oxygen content reduced relative to that of the ambient air and a temperature increased relative to that of the ambient air , the primary air being obtained by mixing ambient air with exhaust gas from the rotary kiln or from a heat exchanger connected to the rotary kiln and used for preheating raw meal , wherein the primary air is further obtained by mixing with hot air.2. A method according to claim 1 , wherein the mixing ratio of ambient air claim 1 , exhaust gas and hot air is controlled such that the primary gas is fed to the burner at a temperature of 50-250° C. and an oxygen content of 8-18% by vol.3. A method according to claim 1 , wherein the mixing of ambient air claim 1 , exhaust gas and hot air is controlled to maintain a volume flow of primary gas adapted to the process.4. A method according to claim 1 , wherein hot air is used at a temperature of 80-150° C.5. A method according to claim 1 , wherein exhaust gas is used at a temperature of 100-200° C.6. A method according to claim 1 , wherein exhaust gas with an oxygen content of 6-10% by vol. is used.7 ...

Method for cleaning bypass gases of the cement or mineral industry, and system of the cement or mineral industry

A method for cleaning bypass gases of the cement or mineral industry includes cooling down a removed bypass gas from a cement or mineral processing plant to a temperature of between 500° C. and 150° C., and coarsely dedusting the bypass gas, the dust burden being reduced by 30 to 95%. After the dedusting step, the gaseous constituents contained in the partly dedusted bypass gas are reduced in a reducing step. The partly dedusted bypass gas is further finely dedusted. The gaseous constituents reducing step includes at least a catalytic reduction of one or more of nitrogen oxides, hydrocarbons, and carbon monoxide.

Sulphur-assisted carbon capture and storage (CCS) processes and systems

A system for carbon capture includes an oxy-fuel combustor for combusting a hydrocarbon with pure oxygen to produce heat energy and carbon dioxide, a COS converter for converting the carbon dioxide to COS, a transport means for transporting the COS, a sulphur recovery unit for recovering sulphur from the COS and an adjunct sulphur-burning power plant for combusting the sulphur to generate energy for powering one or more carbon capture and storage processes. 1. A system for carbon capture and storage , the system comprising:an oxy-fuel combustor for combusting a hydrocarbon with pure oxygen to produce heat energy and carbon dioxide;a COS converter for converting the carbon dioxide to COS;a transport means for transporting the COS;a sulphur recovery unit for recovering sulphur from the COS;a sulphur-burning power plant for combusting the sulphur to generate energy for powering one or more carbon capture and storage processes.2. The system as claimed in wherein the sulphur recovery unit also recovers carbon dioxide from the COS for sequestering the carbon dioxide in a sequestration site.3. The system as claimed in wherein the sulphur-burning power plant supplies power to a carbon dioxide compressor for pressurizing carbon dioxide for injection into the sequestration site.4. The system as claimed in wherein the sulphur-burning power plant supplies power to an air separation unit that supplies the pure oxygen to the oxy-fuel combustor.5. A system for carbon capture and storage claim 2 , the system comprising:a combustor for combusting a hydrocarbon with oxygen to produce heat energy and carbon dioxide;a COS converter for converting the carbon dioxide to COS;a sulphur recovery unit for recovering sulphur from the COS;a sulphur-burning power plant for combusting the sulphur to generate energy for powering one or more carbon capture and storage processes.6. The system as claimed in wherein the sulphur recovery unit also recovers carbon dioxide from the COS for sequestering ...

EXHAUST GAS POLLUTION REDUCTION

A method for reducing pollution in exhaust gases and a system for treating exhaust gas are provided. The method includes the step of treating an exhaust gas stream with a treating fluid. In one application, the treating fluid is injected by spraying droplets into the exhaust gas stream. A system for treating exhaust gas includes a reagent, and a nozzle to spray the reagent into the exhaust gas stream. 1. A method for treating exhaust gas streams from an industrial process , the method comprising:providing an exhaust gas stream;providing a reagent;combining the exhaust gas stream with the reagent to create a combined stream; andremoving particulates comprising at least a portion of one heavy metal from the combined stream by forming a particulate residue containing the heavy metal in non-leachable form.2. The method of claim 1 , further comprising combining the reagent with water in a ratio of 1:3 to 1:6 of reagent to water claim 1 , prior to combining the exhaust gas stream with the reagent.3. The method of claim 2 , further comprising combining the reagent and water with at least one of a surfactant claim 2 , a dispersant claim 2 , or a hyperdispersant prior to combining the exhaust gas stream with the reagent.4. The method of claim 1 , further comprising:passing the combined stream through a particulate collection system; andrecycling the particulate for use as raw material.5. The method of claim 1 , wherein the step of combining the exhaust gas stream with the reagent comprises injecting a treating fluid comprising said reagent into said exhaust gas stream prior to a particulate collection system.6. The method of claim 5 , wherein said injecting further comprises spraying droplets of said treating fluid into said exhaust gas stream.7. The method of claim 5 , wherein said treating further comprises injecting said treating fluid into said exhaust gas stream at a point where said exhaust gas stream has a temperature of 350 degrees Fahrenheit.8. The method of claim 5 ...

Carbon capture system and method for capturing carbon dioxide

A carbon capture system includes a Carbonator for adsorbing carbon dioxide with a carbon dioxide lean sorbent generating a carbon dioxide rich sorbent, a first Calciner for thermally decomposing a carbon dioxide rich sorbent into a carbon dioxide lean sorbent and carbon dioxide, a supply of raw material to be calcined into the first Calciner containing a carbon dioxide rich sorbent, a connection between the first Calciner and the Carbonator, a second Calciner for thermally decomposing a carbon dioxide rich sorbent into a carbon dioxide lean sorbent and carbon dioxide, a connection between the Carbonator and the second Calciner, and a connection between the second Calciner and the Carbonator.

METHOD FOR DENITRIFICATION OF BYPASS EXHAUST GASES IN A PLANT FOR PRODUCING CEMENT CLINKER

Denitrifying bypass exhaust gases in a cement clinker producing plant. The plant comprises a rotary kiln connected to a calciner for the deacidification of raw material or to a rotary kiln riser shaft via a rotary kiln inlet chamber, and the bypass exhaust gas being drawn off in the region of the rotary kiln inlet chamber. The method comprises: cooling the bypass gas to between 260 C and 400 C in a cooling device, injecting an ammonia-, urea-, and/or ammonium-containing substance into the cooled bypass gas, introducing the cooled and mixed bypass gas into a ceramic filter system to filter out any halide and sulfate of the alkali metals and alkaline-earth metals precipitated during cooling the gas, and any nitrogen not reacted by the injected substances is chemically selectively reduced over a catalytic converter which is located in or directly downstream of the ceramic filter system. 110-. (canceled)11. A process for the denitrification of bypass exhaust gases in a plant for producing cement clinker ,where the plant has, in the gas flow direction, a rotary tube furnace upstream of a calciner for sintering of the cement clinker, andwhere the rotary tube furnace is connected via a rotary tube furnace inlet chamber to the calciner for deacidification of raw meal or to a rotary tube furnace riser shaft, andwhere the bypass exhaust gas is taken off in the region of the rotary tube furnace inlet chamber, comprising the steps:cooling the bypass exhaust gas to a temperature in the range from 260° C. to 400° C. in a cooling apparatus, 'where the at least one of the ammonia, the urea or the ammonium at least partially converts the free-radical gas constituents present in the cooled bypass gas into non-free-radical gas constituents by at least one of hydrolysis, partial oxidation, or partial reduction,', 'injecting at least one of an ammonia-, urea- or ammonium-containing substance into the cooled bypass exhaust gas,'} a) at least one of lithium fluoride, lithium chloride, ...

METHOD FOR MANUFACTURING HIGH-STRENGTH CEMENT CURED PRODUCT

A method for manufacturing a high-strength cement cured product constituted by: mixing and kneading cement with at least water and water-reducing agent; patting the cement kneaded mixture () into a vacuum device and removing air and dehydrating by vacuum evacuation; forming an impermeable coating layer () on the surface of the cement kneaded mixture () contained in a container inside the vacuum device () and then exposing the cement kneaded mixture () to atmospheric pressure; and then curing the cement kneaded mixture (). This enables it to be hardened while having a reduced air amount. Thereby, a high-strength cement cured product having high compressive strength can be obtained. 1. A method for manufacturing a high-strength cement cured product , the method comprising:mixing and kneading cement with at least water and water-reducing agent to obtain cement kneaded mixture;putting the cement kneaded mixture into a vacuum vessel of a vacuum device, and vacuum-evacuating the inside of the vacuum vessel to bring the cement kneaded mixture under decompression, thereby removing air and dehydrating;forming an impermeable coating layer on the whole surface of the cement kneaded mixture contained in the vacuum vessel of the vacuum device by vibrating or agitating the cement kneaded mixture and providing either one of water, oil and surfactant from a providing device connected to the vacuum vessel, and then exposing the cement kneaded mixture to atmospheric pressure; andthen curing the cement kneaded mixture.23-. (canceled)4. The method according to claim 1 , wherein the exposing of the inside of the vacuum vessel of the vacuum device to atmospheric pressure is performed by putting either one of air and inert gas into the vacuum vessel.5. A high-strength cement cured product claim 1 , manufactured by the method according to .6. A high-strength cement cured product claim 4 , manufactured by the method according to . The present invention is related to a high-strength cement ...

USE OF CLINKER KILN DUST FOR GAS SCRUBBING

Methods and apparatus for reducing the content of controlled acidic pollutants in clinker kiln emissions are disclosed. The methods and apparatus include introducing bypass dust produced during production of clinker into one or more locations between the preheater exhaust and the inlet to a dust filter including into a gas conditioning tower. Total bypass dust separated from the kiln exhaust gas may be used. The bypass dust can be separated into a fine and coarse portions. Fine or total bypass dust can be mixed with water to form a bypass dust slurry that can be introduced into the gas conditioning tower. Bypass dust can be used to reduce the content of acidic pollutants such as hydrogen chloride HCl and sulfur oxides SOfrom clinker kiln emissions. 1. A clinker plant comprising:a clinker kiln;a kiln exit riser coupled to the clinker kiln, wherein the kiln exit riser comprises a kiln riser duct;a precalciner coupled to the kiln exit riser;a preheater coupled to the precalciner, wherein the preheater comprises a preheater exit; andone or more apparatus configured to introduce bypass dust extracted from the kiln riser duct into preheater exhaust gases leaving the preheater exit.2. The clinker plant of claim 1 , wherein the apparatus comprises:one or more separators configured to separate the bypass dust from kiln exhaust;one or more separators configured to separate the bypass dust into one or more bypass dust fractions;one or more slakers configured to provide one or more bypass dust slurries;one or more nozzles configured to introduce the bypass dust into the preheater exhaust gases; ora combination of any of the foregoing.3. The clinker plant of claim 1 , wherein the bypass dust comprises coarse bypass dust claim 1 , fine bypass dust claim 1 , or a combination thereof.4. The clinker plant of claim 1 , comprising one or more separators configured to separate the bypass dust into one or more bypass dust fractions.5. The clinker plant of claim 1 , comprising one or ...

METHOD FOR THE PRODUCTION OF A SYNGAS FROM A STREAM OF LIGHT HYDROCARBONS AND FROM COMBUSTION FUMES FROM A CEMENT CLINKER PRODUCTION UNIT

A process for producing a syngas containing CO and Hfrom a stream of light hydrocarbons and from combustion flue gases from a cement clinker production unit comprising at least one calcining kiln (), and a means for discharging the combustion flue gases () from the calcining kiln to the outside of said unit, said process comprising the following steps: 1300500. A process for producing a syngas containing CO and Hfrom a stream of light hydrocarbons and from combustion flue gases from a cement clinker production unit comprising at least one calcining kiln () , and a means for discharging the combustion flue gases () from the calcining kiln to the outside of said unit , said process comprising the following steps:{'b': 70', '500, 'a) at least some of the combustion flue gases () obtained in said clinker production unit are collected upstream of said means for discharging the combustion flue gases ();'}{'b': 70', '101, 'b) optionally, said combustion flue gases () collected in step a) are treated to obtain treated combustion flue gases ();'}{'b': 113', '110', '70', '101, 'c) a reaction stream () comprising a stream of light hydrocarbons () containing methane and the combustion flue gases () obtained in step a) or optionally the treated combustion flue gases () obtained in step b) is prepared; and'}{'b': 113', '1009', '114', '1009, 'sup': '3', 'sub': 'catalyst', 'd) said reaction stream () is sent to a tri-reforming reactor () to obtain a syngas (), said tri-reforming reactor () operating at a temperature of between 650 and 900° C., a pressure of between 0.1 and 5 MPa, and an HSV of between 0.1 and 200 Nm/h.kg.'}220070200. The process as claimed in claim 1 , wherein the cement clinker production unit comprises a preheater () using the combustion flue gases as heat source claim 1 , placed upstream of the calcining kiln claim 1 , characterized in that the combustion flue gases () are collected at the level of the preheater () of said cement clinker production unit. ...

Direct-fired inclined counterflow rotary kilns and use thereof

Method of operating a long direct-fired inclined counterflow rotary kiln for the thermal treatment of material and counterflow rotary kiln adapted for same, whereby material to be treated is introduced into the kiln at the inlet end and treated material is evacuated from the kiln at the outlet end, whereby a main combustion zone extends inside the kiln over a distance of ¼ to ⅓ of the internal length L int of the kiln, whereby a supplementary combustion zone in which supplementary combustion takes place with an oxygen-rich oxidant extends inside the kiln over a distance from the inlet end of at most ¼ of the internal length L int , and whereby no combustion takes place in a heat exchange zone located between the main combustion zone and the supplementary combustion zone.

APPENDIX FOR CLEANING THE SMOKE GASES OF AN OVEN

Method and plant for manufacturing cement clinker

시멘트 크링커 제조 방법 및 설비에 관한 것으로서, 상기 방법은 시멘트 원료 밀을 예열기(1)내에서 예열하고, 상단부(3a) 및 하단부(3b)를 포함하는 하소로(3)내에서 하소시키며, 킬른로(5)내에서 크링커로 연소시키며, 그리고 이어지는 크링커 냉각기(7)내에서 냉각시킨다. 본 발명은 상기 킬른로(5)로부터의 배기 가스가 상기 하소로의 상단부(3a)내로 유입되고, 유사하게 연료가 하소로의 상단부(3a)내로 유입되며, 배기 가스/연료 현탁물질이 하소로(3)를 통해 아래쪽으로 배향되며, 크링커 냉각기(7)로부터의 예열된 공기 및 예열기로(1)부터의 예열된 원료 밀이 조합되어 또는 독립적으로 킬른로로부터의 배기 가스 및 연료가 유입되는 영역 아래의 위치에서 하소로(3)내로 공급되고, 예열된 공기가 하소로(3)를 통해 하향 배향되고 배기 가스/연료 현탁물질과 점차적으로 혼합되며, 중력의 작용으로 원료 밀이 하소로(3)의 벽을 따라 하향되고 하소로의 하단부(3b)에서 배기 가스내에 현탁되며, 배기 가스/원료 밀 현탁물질이 하소로의 하단부(3b)로부터 인출되고 킬른로로 향하게되는 원료 밀을 분리하기 위한 분리 수단으로 이송되는 것을 특징으로 한다. 그에 따라, 킬른로 배기 가스와 함께 하소로내로 도입되는 NO x 를 상당량 감소시키고, 휘발성 성분의 함량이 낮은 연료를 이용하는 경우에도 높은 연료 연소 효과를 얻을 수 있으며, 연료와 함께 하소로내로 도입되는 질소가 NO x 로 변환되는 정도도 감소시킨다. A method and apparatus for manufacturing a cement clinker, the method preheating a cement raw mill in a preheater (1), calcining in a calcination furnace (3) comprising an upper end (3a) and a lower end (3b), and a kiln furnace In (5) with a clinker, followed by cooling in a clinker cooler (7). The present invention allows the exhaust gas from the kiln furnace 5 to flow into the upper end 3a of the calcination furnace, similarly the fuel flows into the upper end 3a of the calcination furnace, and the exhaust gas / fuel suspending material to the calcination furnace. Oriented downward through (3), where the preheated air from the clinker cooler 7 and the preheated raw mill from the preheater are combined or independently enter the exhaust gas and fuel from the kiln furnace The preheated air is oriented downwardly through the calcination furnace 3 and gradually mixed with the exhaust gas / fuel suspending material at the following position, and the action of gravity causes the raw mill to be calcined (3). To separate the raw mill which is lowered along the wall of the furnace and suspended in the exhaust gas at the lower end 3b of the calcination furnace, and the exhaust gas / raw mill suspending material is withdrawn from the lower end 3b of ...

Matrix for the continuous fiber reinforced cement composites using ultra-super fine cement

본 발명은 초미립자의 시멘트를 사용하여 연속섬유보강시멘트 복합소재(재료)를 제조할 때 연속섬유를 견고히 접착 또는 부착하기 위해 사용되는 시멘트 매트릭스 제조에 관한 것으로, 더욱 상세하게는 연속섬유의 견고한 접착을 위하여 분말도(blaine)가 10,000 이상 20,000 ㎠/g이하의 초미립자상의 시멘트계와 실리카흄, 석회석 미분말, 슬래그미분말, 플라이애시 등 미립분의 무기계 첨가재, 무기게 팽창재 및 유기계 혼화제류를 조합한 조성물로 이루어진 초미립자계의 시멘트 복합매트릭스의 제조방법에 관한 발명이다. The present invention relates to the production of a cement matrix used to firmly adhere or adhere to continuous fibers when manufacturing a continuous fiber reinforced cement composite material (material) using cement of ultra-fine particles, and more particularly, to provide a firm adhesion of continuous fibers. Ultra fine particles made of a combination of ultrafine cement-based cements with a fineness of 10,000 or more and 20,000 cm 2 / g or less and fine particles such as silica fume, limestone powder, slag powder and fly ash, inorganic additives, inorganic crab expanders and organic admixtures. The present invention relates to a method for producing a cement composite matrix of a system. 이들 복합체의 조성물 중 시멘트 및 무기계 첨가재 입자의 분말도별로 복합체를 성형, 제조하여 분말도의 영향이 섬유보강 복합체의 계면구조에 미치는 영향을 조사하고 시멘트 복합 매트릭스로서의 한계분말도 즉, 분말도(blaine)가 10,000 이상 20,000 ㎠/g 이하의 초미립자상의 시멘트와 무기계 미분말을 사용함으로서, 고인성,고강도 시멘트계 복합매트릭스를 제조하는 방법을 발명하였다. In the composition of these composites, the composites were formed and manufactured according to the powder levels of the particles of cement and inorganic additives, and the effects of the powders on the interfacial structure of the fiber reinforced composites were investigated. By using ultra fine cement and inorganic fine powder of 10,000 or more and 20,000 cm 2 / g or less), a method for producing a high toughness, high strength cement-based composite matrix was invented. 또한 시멘트복합체에 인성 등을 보강하기 위해서 사용되는 유리섬유가 시멘트콘크리트중의 강알카리성으로 인해 유리가 침식, 부식되어 그효과가 점차 감소하는 단점이 있다. 이러한 단점을 보강하기 위해서 내알카리 섬유를 첨가 사용하여야 하나 비용이 고가이고 이 내알카리 섬유도 장기간 콘크리트중에서 서서히 침식되는 것을 알 수 있다. In addition, the glass fiber used to reinforce toughness in the cement composite has a disadvantage that the glass is eroded and ...

塩素バイパス設備の運転方法

(57)【要約】 【課題】 この発明は、バイパス率に左右されずに効率 のよい塩素除去を行うことができる塩素バイパス設備の 運転方法を提供することを課題とする。 【解決手段】 プローブ１２からの抽気量に応じてダン パ２３の開度を変えてプローブ冷却ファン１３からプロ ーブ１２へ供給される外気の量を調整する。具体的に は、抽気量が少ないときには、ダンパ２３の開度を大き くしてプローブ冷却ファン１３からの外気量を増加す る。これにより、粗粉分級サイクロン１４の入口で所定 のガス流速が確保され、ダクト内のダストの堆積や粗粉 分級サイクロン１４における分級効率の低下が防止され る。

Cement kiln with alternative fuel gasification combustion device

본 발명은 플라즈마 연소시스템을 이용하여 버려지는 폐플라스틱의 열분해를 통하여 가스화 및 연소시키는 것으로 시멘트 소성로에 부속된 예열탑에 추가적인 열원을 공급하여 연료 사용량을 저감할 수 있으며, 플라스틱 연소에 따른 유해가스 및 타르 발생 저감으로 연속적이고 경제적인 운영이 가능한 대체연료 가스화 연소 장치를 포함하는 시멘트 소성로에 관한 것이다. 본 발명은 (a) 연소반응기; (b) 상기 연소반응기에 플라즈마를 공급하는 4개 이상의 플라즈마 연소수단; (c) 상기 연소반응기의 상반부에 연결되어 상기 연소반응기 방향으로 폐플라스틱을 공급하는 연료공급수단을 포함하는 대체연료 가스화 장치를 포함하는 시멘트 소성로를 제공한다. The present invention uses a plasma combustion system to gasify and burn waste plastic through pyrolysis, and it is possible to reduce fuel consumption by supplying an additional heat source to a preheating tower attached to a cement kiln, and harmful gases and It relates to a cement kiln comprising an alternative fuel gasification combustion device capable of continuous and economical operation by reducing tar generation. The present invention is (a) a combustion reactor; (b) four or more plasma combustion means for supplying plasma to the combustion reactor; (c) provides a cement kiln comprising an alternative fuel gasifier connected to the upper half of the combustion reactor and including a fuel supply means for supplying the waste plastic in the direction of the combustion reactor.

一种高强低水化热固井水泥及其制备方法

本发明公开了一种高强低水化热固井水泥，涉及石油勘探与开发使用的固井材料技术领域。本发明其各组分及对应的质量百分比为：高强低水化热胶凝材料65%~81%，低水化活性材料10%~20%；增强剂4%~8%，抗收缩剂4%~6%，早强剂0.5%~1.5%。本发明的高强低水化热固井水泥适用于长封固高温大温差地层，保障了长封固高温大温差低压易漏层的固井施工安全，提高了油气资源的高效性和开采安全性，满足国家对深层以及超深层油气资源的需求。

Способ и установка для производства цементного клинкера

Изобретение относится к производству цементного клинкера. Способ производства цементного клинкера включает подогрев цементной сырьевой смеси в подогревателе, прокаливание в кальцинаторе, включающем верхнюю часть и нижнюю часть, обжиг в клинкер в обжиговой печи и охлаждение в охладителе клинкера. Отходящие газы обжиговой печи и топливо вводят в верхнюю часть кальцинатора, суспензию из отходящего газа и топлива направляют вниз через кальцинатор. Подогретый воздух из охладителя клинкера и подогретую сырьевую смесь из подогревателя, вместе или по отдельности, вводят в кальцинатор на участке, расположенном под зоной введения отходящих газов обжиговой печи и топлива. Подогретый воздух направляют вниз по кальцинатору, причем он постепенно смешивается с суспензией из отходящего газа и топлива. Сырьевая смесь под действием силы тяжести движется вниз вдоль стенки кальцинатора, переходя в суспензию в отходящих газах в нижней части кальцинатора. Суспензию из отходящего газа и сырьевой смеси удаляют из нижней части кальцинатора и перемещают в средства разделения для отделения сырьевой смеси, которую затем направляют в обжиговую печь. Охарактеризована установка для реализации этого способа. Технический результат: повышение полноты сгорания топлива при использовании топлива с низким содержанием летучих компонентов, снижение уровня выбросов NO x . 2 н. и 11 з.п. ф-лы, 1 ил. ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2 263 083 (13) C2 C 04 B 7/43, F 27 B 7/20 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2003103090/03, 19.07.2001 (72) Àâòîð(û): ÑÊÎÐÓÏ ÉÅÍÑÅÍ Ëàðñ (DK), ÒÎÌÑÅÍ Êåíò (DK) (24) Äàòà íà÷àëà äåéñòâè ïàòåíòà: 19.07.2001 (30) Ïðèîðèòåò: 24.08.2000 DK PA200001253 (73) Ïàòåíòîîáëàäàòåëü(ëè): Ô.Ë. ÑÌÈÒÒ À/Ñ (DK) R U (43) Äàòà ïóáëèêàöèè çà âêè: 20.12.2004 (45) Îïóáëèêîâàíî: 27.10.2005 Áþë. ¹ 30 2 2 6 3 0 8 3 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: US 4014641 A, 29.03. ...

Method to produce cement clinker and plant to produce cement clinker

FIELD: construction. SUBSTANCE: plant comprises a cyclone heater (3, 3 a ), a prebaking reactor (4), a rotary furnace (1), a clinker cooler (5). According to the invention, fumes produced by the rotary furnace and heater gases are separated so that they are not mixed. Into the prebaking reactor gas is supplied with high content of oxygen, and some (8 a ) gases (8), leaving the cyclone heater (3, 3 a ), are recirculated into the prebaking reactor (4) and even into the cyclone heater (3, 3 a ), in order to produce the appropriate flow required to get suspended condition of raw materials in the heater. The other non-recirculated part (8 b ) of gases with high content of carbon dioxide is adapted, making it possible to limit CO 2 emissions into atmosphere, with the help of treatment, such as complexing. EFFECT: method improvement. 15 cl, 2 dwg, 2 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 498 182 (13) C2 (51) МПК F27D 17/00 (2006.01) F27B 7/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011107735/02, 17.07.2009 (24) Дата начала отсчета срока действия патента: 17.07.2009 (72) Автор(ы): ЖОРЖЕ Серж (FR), ДЕВРЁ Себастьян (FR) (73) Патентообладатель(и): ФИВ ФСБ (FR) R U Приоритет(ы): (30) Конвенционный приоритет: 01.08.2008 FR 08/04407 (43) Дата публикации заявки: 10.09.2012 Бюл. № 25 2 4 9 8 1 8 2 (45) Опубликовано: 10.11.2013 Бюл. № 31 (56) Список документов, цитированных в отчете о поиске: ЕР 1923367 А, 21.05.2008. DE 3010909 A1, 01.10.1981. RU 2248946 C2, 27.03.2005. RU 2136622 C1, 10.09.1999. 2 4 9 8 1 8 2 R U (86) Заявка PCT: FR 2009/000884 (17.07.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 01.03.2011 (87) Публикация заявки РСТ: WO 2010/012881 (04.02.2010) Адрес для переписки: 109012, Москва, ул. Ильинка, 5/2, ООО "Союзпатент" (54) СПОСОБ ПОЛУЧЕНИЯ ЦЕМЕНТНОГО КЛИНКЕРА И УСТАНОВКА ДЛЯ ПРОИЗВОДСТВА ЦЕМЕНТНОГО КЛИНКЕРА циклонного подогревателя (3, 3а), рециркулируют в ...

Method for producing cement with additive

FIELD: construction. SUBSTANCE: method for producing cement with an additive, comprising firing serpentinite, grinding it to the fraction of less than 30 microns, and subsequently administering it as a mineral additive in the amount of 2-30 wt % into Portland cement or the mixture of Portland cement clinker and gypsum at the stage of their grinding, wherein before firing the serpentinite is irrigated with the aqueous solution of a sodium, or potassium, or calcium salt, or the aqueous solution of the mixture of said salts at the total content of salts 0.02-1.0% by weight of serpentinite. EFFECT: increasing the strength. 2 ex, 2 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 618 808 C1 (51) МПК C04B 7/36 (2006.01) C04B 7/52 (2006.01) C04B 14/04 (2006.01) C04B 111/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2016120290, 25.05.2016 (24) Дата начала отсчета срока действия патента: 25.05.2016 Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "ФОРЭС" (RU) Приоритет(ы): (22) Дата подачи заявки: 25.05.2016 (45) Опубликовано: 11.05.2017 Бюл. № 14 (56) Список документов, цитированных в отчете о поиске: RU 2582162C1, 20.04.2016. RU 2378208 C1, 10.01.2010. RU 2376255 С1, 20.12.2009. WO 2014118242 A1, 07.08.2014. WO 2015035388 A1, 12.03.2015. 2 6 1 8 8 0 8 R U (57) Формула изобретения Способ получения цемента с добавкой, включающий обжиг серпентинита, его измельчение до фракции менее 30 мкм и последующее введение в качестве минеральной добавки в количестве 2-30 масс. % в портландцемент или в смесь портландцементного клинкера и гипса на стадии их помола, причем перед обжигом серпентинит орошают водным раствором соли натрия, или калия, или кальция или водным раствором смеси указанных солей при общем содержании соли - 0,02-1,0% от массы серпентинита. Стр.: 1 C 1 C 1 (54) Способ получения цемента с добавкой 2 6 1 8 8 0 8 Адрес для переписки: 620026, ...

污泥处理方法和水泥制造系统

一种水泥制造系统，其具备：对水泥原料进行预热的悬浮预热器；对预热后的水泥原料进行煅烧的煅烧炉；以及对煅烧后的水泥原料进行烧成的烧成炉。该水泥制造系统中，将包含干燥污泥的粒状物投入悬浮预热器的600℃以上且小于800℃的温度区域，将干燥污泥作为水泥原料和燃料使用。

一种含有盾构渣土的胶凝材料和制备方法及应用

本发明属于固废处理技术领域，本发明涉及一种含有盾构渣土的胶凝材料和制备方法及应用。包括如下重量份的原料，石灰石质渣土25‑50份，黏土质渣土15‑30份或闪长岩20‑35份，铁粉1‑1.5份，电石渣30‑40份，氟化钙0.4‑0.8份，石膏2‑6份。充分利用石灰石质渣土或黏土质渣土、闪长岩，制备得到胶凝材料，使其能够再利用，解决了盾构渣土无法再利用，对环境危害大，盾构渣土再利用抗压强度低、体积安定性差的问题。

一种白水泥的配方及制备工艺

本发明公开了一种白水泥的配方及制备工艺，按照重量百分比取目数不低于300的石灰石粉45‑50％、硅质石粉25‑30％、云母粉10％、白云石粉5％、二氧化硅5％和石膏5％；将其混合均匀后倒入中空回转窑内，在温度为1400‑1500℃条件下烧结10‑15小时；烧结结束，用浓度为10‑12％的漂白剂对混合物进行漂白处理，漂白剂的质量和混合物的质量比为1:1.5；漂白完成后，再将混合物置于450℃下烘干1‑2小时形成白水泥烘干料。本白水泥的配方及制备工艺具有效率高、产品质量高、工艺性好和制造成本低的优点，可快速得到具有较高的白度和色泽明亮的白水泥产品。

Method of automatic monitoring of quality of alumina-containing sinter

СПОСОБ АВТОМАТИЧЕСКОГО КОНТРОЛЯ КАЧЕСТВА ГЛИНОЗЕМСОДЕРЖАЩЕГО СПЕКА, включающий измерение температуры газов, отход щих из вращающейс  печи с колосниковым холодильником, и температуры на выходе зоны сушки печи, отличающийс  тем, что, с целью повьщтени  точности контрол , дополнительно измер ют величину давлени  дуть  охлаждающего воздуха под колосниковой решеткой. (Л METHOD FOR AUTOMATIC MONITORING QUALITY alumina-SPECA comprising measuring temperature of gases exiting the rotary kiln with grate cooler, and the outlet temperature kiln drying zone, characterized in that, in order povschteni accuracy control further measured pressure value blowing cooling air under the grate lattice. (L

Device and method for cooling of waste gases of burning furnace in its bypass circuit

FIELD: metallurgy. SUBSTANCE: according to the proposed method, some portion of gases is removed from burning system (1, 3) and cooled in mixing chamber (9) containing a tubular casing, to which gases are introduced from one end through inlet channel (11). Cooled gases are removed from the other end through outlet channel (13). Cooling gases are supplied to the mixing chamber through tangential inlet channel (15) with draft device (17). Waste gases are drawn through the bypass circuit with the second draft device (19). Mass flow rate m A and flow velocity v A of the gases supplied to mixing chamber (9), and mass flow rate m B and flow velocity v B of cooled waste gases removed from chamber (9) are measured. Actual mass flow rate m C and velocity flow v C of the gases drawn through bypass circuit (7) is determined based on values m A , v A , m B and v B and compared to the specified value for waste gases directed through the bypass circuit. Actual swirl ratio S is determined for gases in mixing chamber (9) based on values m A , v A , m C and v C and compared to the specified required value. At least draft device (17) and draft device (19) is controlled. EFFECT: reduction of the amount of fouling in the burning system and reduction of penetration of cooling gases to the burning system. 10 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 479 813 (13) C2 (51) МПК F27D 19/00 (2006.01) F27B 7/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010132706/02, 18.11.2008 (24) Дата начала отсчета срока действия патента: 18.11.2008 (73) Патентообладатель(и): ЭФ-ЭЛ-СМИДТ А/С (DK) R U Приоритет(ы): (30) Конвенционный приоритет: 05.01.2008 DK PA200800016 (72) Автор(ы): ХУНДЕБЁЛЬ Сёрен (DK) (43) Дата публикации заявки: 10.02.2012 Бюл. № 4 2 4 7 9 8 1 3 (45) Опубликовано: 20.04.2013 Бюл. № 11 (56) Список документов, цитированных в отчете о поиске: ЕР 0927707 А, 07.07.1999. RU 2190171 С1, 27.09.2002. SU 1657913 А1, 23. ...

Снижение выбросов ртути из цементных заводов

1. Способ снижения выбросов ртути из цементного завода, содержащего в своем составе, по меньшей мере, устройство для сбора пылевидных частиц и башню предварительного нагрева, содержащую один или более циклонов предварительного нагрева, включающий инжектирование распыленного угля, по меньшей мере, в один циклон предварительного нагрева указанного цементного завода, где указанное инжектирование осуществляют, по меньшей мере, в один циклон предварительного нагрева при температуре в диапазоне от приблизительно 400°С до приблизительно 800°С.2. Способ по п.1, отличающийся тем, что указанный цементный завод дополнительно содержит в своем составе угольный мешочный пылеуловитель и куда распыленный уголь поступает из угольного мешочного пылеуловителя указанного цементного завода.3. Способ по п.1, отличающийся тем, что указанный распыленный уголь поступает из внешнего источника на указанный цементный завод.4. Способ по п.1, отличающийся тем, что эффективное количество бромсодержащего вещества приводят в контакт с указанным распыленным углем в течение времени, достаточного для повышения способности распыленного угля адсорбировать ртуть и ртутьсодержащие соединения, при условии, что, когда бромсодержащее вещество является элементарным бромом, распыленный уголь не возвращается ни в печь, ни в башню предварительного нагрева после указанного контакта.5. Способ по п.4, отличающийся тем, что указанное бромсодержащее вещество инжектируют после выхода распыленного угля из печи и перед устройством для сбора пылевидных частиц.6. Способ по п.4, отличающийся тем, что указанное бромсодержащее вещество включает элементарный бром � РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2012 151 826 (13) A (51) МПК B01D 53/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): АЛЬБЕМАРЛ КОРПОРЕЙШН (US) (21)(22) Заявка: 2012151826/05, 27.04.2011 Приоритет(ы): (30) Конвенционный приоритет: 04.05.2010 US 61/331,219 (85) Дата начала рассмотрения заявки PCT на ...

Method to produce cement clinker and plant to produce cement clinker

FIELD: construction. SUBSTANCE: plant comprises a cyclone heater, a prebaking reactor, a rotary furnace and a clinker cooler. According to the invention fumes from the furnace are sent into the prebaking reactor and even into the cyclone heater. Into the prebaking reactor (4) gas (9) is supplied with high content of oxygen, in which nitrogen content is below 30% and which is the only source of oxygen for the specified reactor. Some (8 a ) gases leaving the cyclone heater are recirculated into the plant so that the appropriate flow is produced, which is necessary for obtaining the suspended condition of raw materials in the specified heater. The other part (8 b ) with high content of carbon dioxide is adapted with the purpose of treatment that makes it possible to limit carbon dioxide emissions into atmosphere, in particular, such as complexing. EFFECT: method improvement. 14 cl, 3 dwg, 2 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 498 181 (13) C2 (51) МПК F27D 17/00 (2006.01) F27B 7/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011107731/02, 17.07.2009 (24) Дата начала отсчета срока действия патента: 17.07.2009 (72) Автор(ы): КОРДОННЬЕ Ален (FR), ДЕВРЁ Себастьян (FR) (73) Патентообладатель(и): ФИВ ФСБ (FR) R U Приоритет(ы): (30) Конвенционный приоритет: 01.08.2008 FR 08/04406 (43) Дата публикации заявки: 10.09.2012 Бюл. № 25 2 4 9 8 1 8 1 (45) Опубликовано: 10.11.2013 Бюл. № 31 (56) Список документов, цитированных в отчете о поиске: ЕР 1923367 А, 21.05.2008. DE 3010909 А1, 01.10.1981. RU 2248946 С2, 27.03.2005. RU 2136622 С1, 10.09.1999. 2 4 9 8 1 8 1 R U (86) Заявка PCT: FR 2009/000883 (17.07.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 01.03.2011 (87) Публикация заявки РСТ: WO 2010/012880 (04.02.2010) Адрес для переписки: 109012, Москва, ул. Ильинка, 5/2, ООО "Союзпатент" (54) СПОСОБ ПОЛУЧЕНИЯ ЦЕМЕНТНОГО КЛИНКЕРА И УСТАНОВКА ДЛЯ ПРОИЗВОДСТВА ЦЕМЕНТНОГО КЛИНКЕРА ...

FIBROUS AND REFRACTORY CONSTRUCTION BODIES.

LA INVENCION SE REFIERE A UN COMPONENTE FIBROSO EN FORMULA DE CUERPOS LIGEROS REFRACTARIOS. EL COMPONENTE FIBROSO CON ARREGLO A LA INVENCION, PRESENTA LA VENTAJA, YA QUE EL COMPONENTE FIBROSO NO CONTIENE MAYORITARIAMENTE Y EVENTUALMENTE NINGUNA O CASI NINGUNA FIBRA CONTAMINANTE, PORQUE EVENTUALMENTE TODAVIA LAS FIBRAS EXISTENTES EN EL COMPONENTE FIBROSO, SE DESCOMPONEN LIGERAMENTE A TRAVES DE AGUA O LIQUIDOS. EL COMPONENTE FIBROSO PRESENTA LAS PROPIEDADES TERMICAS Y MECANICAS VENTAJOSAS DE CUERPOS LIGEROS USUALES. EL COMPONENTE FIBROSO CON ARREGLO A LA INVENCION, SE PRODUCE A TRAVES DE FIBRAS INORGANICAS, QUE CONSISTE POR LO MENOS EN UN 90% DE 20 A 50% EN PESO DE CAO Y 50 A 80% EN PESO DE AL2O3, Y UN RESTO DE MAXIMO 10% EN PESO DE OXIDOS CONTAMINANTES CON EMPLEO DE AGUA O UN FLUIDO CONTENIENDO AGUA COMO FLUIDO ADICIONAL, EN TODO CASO CON EMPLEO DE ADITIVOS REFRACTARIOS USUALES. THE INVENTION IS RELATED TO A FIBROUS COMPONENT IN THE FORMULA OF REFRACTORY LIGHT BODIES. THE FIBROUS COMPONENT UNDER THE INVENTION, PRESENTS THE ADVANTAGE, BECAUSE THE FIBROUS COMPONENT CONTAINS NO MAJORITY AND EVENTUALLY NO OR ALMOST NO CONTAMINATING FIBER, THERE WILL STILL BE ANY FOLLOWING FIBERS OUTSIDE OF THE COMPONENT. . THE FIBROUS COMPONENT PRESENTS THE ADVANTAGE THERMAL AND MECHANICAL PROPERTIES OF USUAL LIGHT BODIES. THE FIBROUS COMPONENT UNDER THE INVENTION IS PRODUCED THROUGH INORGANIC FIBERS, WHICH CONSISTS OF AT LEAST 90% OF 20 TO 50% IN WEIGHT OF CAO AND 50 TO 80% IN WEIGHT OF AL2O3, AND A REST OF MAXIMUM 10% BY WEIGHT OF CONTAMINATING OXIDES WITH USE OF WATER OR A FLUID CONTAINING WATER AS ADDITIONAL FLUID, IN ALL CASES WITH USE OF USUAL REFRACTORY ADDITIVES.

Cement clinker manufacturing method in equipment and such cement clinker manufacturing equipment

一种利用工业废渣制备得到的中热硅酸盐水泥及其制备方法

本发明公开了一种利用工业废渣制备得到的中热硅酸盐水泥及其制备方法。其包括以下重量份的组分：石灰石70～80份、磷渣10～20份、转炉钢渣5～10份、电石渣5～10份、改性剂5～10份、三乙醇胺1～5份，以及石蜡5～10份。本发明制备得到的水泥早期强度高，抗腐蚀性能强。

Method for quantitatively determining contents of slag and other mineral additives in cements

FIELD: production of building materials. SUBSTANCE: first, samples are prepared with predetermined content of components to be analyzed, followed by measuring degree of whiteness of resulting powdery mixture using whiteness measuring instrument either visually, or by comparing whiteness of reference sample with actually measured degree of whiteness of mixture. As a result, percentage of components to be analyzed are determined. Method is fool-proof. EFFECT: high-speed analytical procedure; accessibility and easy availability for enterprises due to considerable simplification and reduction of cost. 2 tbl УЗЕЕЕГС ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 21141 184 ' 13) СЛ С 04 В 7/14, С 01 М 21/29 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 96113967/03, 11.07.1996 (46) Дата публикации: 20.05.1998 (56) Ссылки: 1. Богданова И.В. и др. Оперативный контроль качества материалов цементного производства.-Л.: Строиздат, 1983. 2. Богданова И.В. и др. Определение оптимального содержания добавок в цементе.-Цемент, 1984, М 4, с.18. 3. Громозова И.К. и др. Определение содержания доменного шлака в цементе с помощью рентгеноспектрального анализа.-Цемент, 1986, М 3, с.20. (71) Заявитель: Белгородская государственная технологическая академия строительных материалов (72) Изобретатель: Рахимбаев Ш.М., Поспелова Е А. (73) Патентообладатель: Белгородская государственная технологическая академия строительных материалов (54) СПОСОБ ОПРЕДЕЛЕНИЯ КОЛИЧЕСТВЕННОГО СОДЕРЖАНИЯ ШЛАКА И ДРУГИХ МИНЕРАЛЬНЫХ ДОБАВОК В ЦЕМЕНТАХ (57) Реферат: Для повышения скорости проведения анализа, обеспечения доступности предлагаемого способа для большинства предприятий из-за его значительного упрощения и удешевления, не требующего высокой — квалификации — исполнителя, предложен способ определения количественного содержания шлака и других минеральных добавок В цементах, включающий в себя приготовление эталонных проб с заданным содержанием искомого ...

경량기포시멘트 조성물을 이용한 경량기포시멘트 발포체 제조방법

본 발명은 일반 시멘트를 이용하여 상온에서 균일한 크기의 발포조직을 형성하며 경량이면서 방음과 단열 및 방습효과가 우수하고 고온에서 유독가스를 방출하지 않으며 발포조직 사이의 결합력이 우수한 경량기포시멘트 조성물을 이용한 경량기포시멘트 발포체 제조방법에 관한 것으로, 일반 포틀랜드 시멘트와 초속경 시멘트와 탄산칼슘과 과산화수소와 탄산리튬과 칼슘과 섬유와 조강제와 카본과 폴리머와 실리카 퓸과 감수제와 페믹광물을 혼합하여 10 내지 20 분간 상온에서 건식 비빔하는 건식비빔 단계; 건식비빔된 상태에 물의 20 중량 퍼센트를 투입하여 10 내지 20 분간 상온에서 습식비빔하는 제 1 습식비빔 단계; 제 1 습식비빔된 상태에 물의 40 중량 퍼센트를 투입하여 20 내지 30 분간 상온에서 습식비빔하는 제 2 습식비빔 단계; 제 2 습식비빔된 상태에 물의 40 중량 퍼센트를 투입하여 30 내지 40 분간 상온에서 습식비빔하는 제 3 습식비빔 단계; 제 3 습식비빔된 상태를 준비된 성형 틀에 투입하고 30 내지 40 분간 고정 상태를 유지하여 숙성시키는 숙성 단계; 및 숙성단계 이후에 3 내지 4 시간 동안 상온에서 성형된 상태로 건조시키는 건조단계를 포함하는 특징이 있다.

Device for cement obtaining and method of thereof exploitation

FIELD: chemistry. SUBSTANCE: in method in accordance with the claimed invention of exploitation of device for cement obtaining, raw material mixture is preliminarily heated in zone of preliminary heating, preliminarily heated material is preliminarily annealed in annealing zone, and finally, preliminarily annealed material is conglomerated in conglomeration zone. Device for cement obtaining works in such a way, that preliminarily heated material, which is supplied into conglomeration zone, has concentration of CaSO 4 , at least, 75%, preferably 90%, of total salt content. EFFECT: creation of method and device for obtaining cement clinker, where it is possible to apply fuel with high content of sulfur without increase of SO 2 emissions. 12 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 503 630 (13) C2 (51) МПК C04B 7/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011108265/03, 28.07.2009 (24) Дата начала отсчета срока действия патента: 28.07.2009 (72) Автор(ы): КУППЕР Детлев (DE), ШУЛЬЦ Дитмар (DE) (73) Патентообладатель(и): ПОЛИЗИУС АГ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 04.08.2008 DE 102008036088.0 (43) Дата публикации заявки: 10.09.2012 Бюл. № 25 2 5 0 3 6 3 0 (45) Опубликовано: 10.01.2014 Бюл. № 1 (56) Список документов, цитированных в отчете о поиске: US 6383283 B1, 07.05.2002. EA 014136 B1, 29.10.2010. RU 2263083 C2, 20.12.2004. RU 2184710 C2, 10.07.2002. БУДНИКОВ П.П. Гипс: его исследование и применение. - М.: Стройиздат наркоммстроя, 1943. 2 5 0 3 6 3 0 R U (86) Заявка PCT: EP 2009/059758 (28.07.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 04.03.2011 (87) Публикация заявки РСТ: WO 2010/015551 (11.02.2010) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. А.В.Мицу, рег.№ 364 (54) УСТАНОВКА ДЛЯ ПОЛУЧЕНИЯ ЦЕМЕНТА И СПОСОБ ЭКСПЛУАТАЦИИ ТАКОЙ УСТАНОВКИ (57) Реферат: В способе ...

INSTALLATION FOR CEMENT AND METHOD OF OPERATION OF SUCH INSTALLATION

1. Способ эксплуатации установки для получения цемента с предварительным нагревом сырьевой смеси в зоне предварительного нагрева (1), предварительным прокаливанием предварительно нагретого материала в зоне (2) прокаливания и спеканием предварительно прокаленного материала в зоне (3) спекания, ! отличающийся тем, что установка для получения цемента работает таким образом, что предварительно прокаленный материал, который подается в зону спекания, имеет концентрацию SO3, по меньшей мере, 5,5 мас.% и пропорцию CaSO4, по меньшей мере, 75 мас.% от общего содержания солей предварительно прокаленного материала. ! 2. Способ по п.1, отличающийся тем, что, по меньшей мере, некоторые из следующих далее измерений рабочих параметров осуществляют и используют для контроля установки для получения цемента: ! a) анализ газа во входной области зоны (3) спекания, зоны (2) прокаливания и/или перед началом зоны (1) предварительного нагрева, ! b) измерение температуры материала и/или газа в зоне (3) спекания, ! c) измерение температуры материала и/или газа в зоне (2) прокаливания, ! d) измерение температуры материала и/или газа в зоне (1) предварительного нагрева, ! е) лабораторные анализы предварительно прокаленного материала, исходного материала или топлива, ! f) лабораторные анализы сожженного цементного клинкера в зоне спекания, ! g) термический или термографический анализ в области зоны (3) спекания. ! 3. Способ по п.1 или 2, отличающийся тем, что концентрация SO3 и пропорции CaSO4 в предварительно прокаленном материале могут дополнительно подвергаться воздействию одной или нескольких из следующих далее стадий: ! a) выбора исходных материалов, ! b) выбора топлив РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2011 108 265 (13) A (51) МПК C04B 7/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): ПОЛИЗИУС АГ (DE) (21)(22) Заявка: 2011108265/03, 28.07.2009 Приоритет(ы): (30) Конвенционный приоритет: 04.08.2008 DE 102008036088.0 (85) Дата ...

Application of water requirement measurements to approximate specific surface area

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