СПОСОБ И УСТРОЙСТВО ДЛЯ ПРОИЗВОДСТВА ГИДРОКСИДА ЛИТИЯ И КАРБОНАТА ЛИТИЯ

FIELD: chemical industry. SUBSTANCE: invention can be used in chemical industry. Method for the production of lithium hydroxide involves the dissolution of lithium phosphate in hydrochloric acid. This is followed by the preparation of an electrodialyzer with membranes selective to singly charged ions, the supply of lithium phosphate dissolved in acid between the anode separator of the anode chamber and selective to singly charged cations dialysis membrane and between the cathode separator of the cathode chamber and selective to singly charged anions dialysis membrane, respectively and the supply of water between the selective to the singly charged cations dialysis membrane and selective to the single charged anions dialysis membrane. Aqueous solution of lithium chloride and at the same time an aqueous solution of phosphoric acid are obtained by applying an electric current to an electrodialyzer with membranes selective to singly charged ions. Conversion of the obtained aqueous solution of lithium chloride in an aqueous solution of lithium hydroxide is carried out. To obtain lithium carbonate, a solution containing lithium hydroxide is carbonized. EFFECT: invention allows to reduce production costs for obtaining high-purity lithium hydroxide and lithium carbonate. 28 cl, 5 dwg, 2 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 684 384 C1 (51) МПК C01D 15/02 (2006.01) C01D 15/08 (2006.01) B01D 61/44 (2006.01) B01D 61/46 (2006.01) B01J 19/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C01D 15/02 (2018.08); C01D 15/08 (2018.08); B01D 61/44 (2018.08); B01D 61/445 (2018.08); B01D 61/46 (2018.08); B01J 19/08 (2018.08) (21) (22) Заявка: 2017141578, 29.04.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: 08.04.2019 (73) Патентообладатель(и): РЕСЁЧ ИНСТИТУТ ОФ ИНДАСТРИАЛ САЙЕНС & ТЕКНОЛОДЖИ (KR) 30.04.2015 KR 10-2015-0061914; 08.06.2015 KR 10-2015-0080872 (45) Опубликовано: 08.04.2019 Бюл. № 10 ...

Ammonia Seperation

Method for pickling steel sheets

The invention relates to a method for pickling steel sheets 8, said steel sheets being continuously dipped in a pickling bath 1, containing a pickling solution 10, said bath being connected to a treatment unit including a recirculation tank 3, circulation means 12 and 13, a continuous entering flow 11 of said solution being fed into an ultrafiltration device 2 from the recirculation tank 3 and two flows exits the ultrafiltration device, one filtered exiting flow 21 being then fed back inside said recirculation tank 3 and one unfiltered flow 22, said treatment unit including no storage tank.

Method for manufacturing lithium hydroxide and lithium carbonate, and device therefor

The present invention relates to a method for manufacturing lithium hydroxide and lithium carbonate, and a device therefor. The present invention provides a method for manufacturing lithium hydroxide, comprising: a step of dissolving lithium phosphate in an acid; a step of preparing a monovalent ion selective-type electrodialysis device disposed in the order of a cathode cell containing a cathode separator, a monovalent anion selective-type dialysis membrane for selectively permeating a monovalent anion, a monovalent cation selective-type dialysis membrane for selectively permeating a monovalent cation, and an anode cell containing an anode separator, and injecting the lithium phosphate dissolved in the acid between the anode separator of the anode cell and the monovalent cation selective-type dialysis membrane, and between the cathode separator of the cathode cell and the monovalent anion selective-type dialysis membrane, respectively, and injecting water between the monovalent cation ...

REMOVAL OF AMMONIA FROM AMMONIA-CONTAINING WATER USING AN ELECTRODIALYSIS PROCESS

A process and system for removing ammonia from an aqueous ammonia solution. A first aqueous solution and the ammonia solution are flowed respectively through a first and a second separation chamber of a bipolar membrane electrodialysis ("BPMED") stack. The first separation chamber is bounded on an anodic side by a cation exchange membrane and the second separation chamber is bounded on a cathodic side by the cation exchange membrane and on an anodic side by a bipolar membrane. The bipolar membrane has an anion-permeable layer and a cation- permeable layer respectively oriented to face the stack's anode and cathode. While the solutions are flowing through the stack a voltage is applied across the stack that causes the bipolar membrane to dissociate water into protons and hydroxide ions. The protons migrate into the second separation chamber and react there with ammonia to form ammonium ions that migrate to the first separation chamber.

From the polybasic carboxylic acid in the production of the recycled water, metal and organic matter method

Method for pickling steel plate

Two-stage hydroformylation process with circulating gas and SILP technology

The invention relates to processes for preparing aldehydes by hydroformylation of alkenes, in which an alkene-containing feed mixture is subjected to a primary hydroformylation with synthesis gas in the presence of a homogeneous catalyst system, the primary hydroformylation being effected in a primary reaction zone from which a cycle gas containing at least some of the products and unconverted reactants of the primary hydroformylation are drawn off continuously and partly condensed, with recycling of uncondensed components of the cycle gas into the primary reaction zone, and with distillative separation of condensed components of the cycle gas in an aldehyde removal stage to give an aldehyde-rich mixture and a low-aldehyde mixture. The problem that it addresses is that of developing the process such that it achieves high conversions and affords aldehyde in good product quality even in the case of a deteriorating raw material position. More particularly, a solution is to be found for making ...

Membrane-based process for butanols production from mixed butenes

A method of separately producing tert-butanol and sec-butanol, comprising the steps of introducing a mixed butenes stream to a tube side of a reaction membrane unit, introducing a TBA reactor water feed to the tube side of the reaction membrane unit, introducing a sweep gas to a shell side of the reaction membrane unit, introducing an SBA reactor water feed to the shell side, allowing the mixed butenes stream to contact the tube side of a such that selective gases in the mixed butenes stream permeate through the membrane to the shell side, allowing the selective gases that permeate through the membrane to react with water to produce sec-butanol, allowing retentate gases that fail to permeate through the membrane to react with water to produce tert-butanol, collecting the tert-butanol in a TBA reactor effluent, and collecting the sec-butanol in a SBA reactor effluent.

DILUTE CHEMICAL REACTION PROCESS

Disclosed is a process for carrying out a cyclisation reaction, a polymerization reaction, an enzymatic reaction showing substrate inhibition, an enzymatic reaction showing product inhibition, a reaction showing precipitation of the substrate or of a reactant, the process comprising the steps of a) diluting a fresh substrate with solvent to form a diluted substrate-solvent mixture, and supplying this mixture to a reactor, b) causing the reaction medium in the reactor to react, c) discharging reaction mixture comprising reaction product, solvent, and substrate that has not reacted, to a first filtration membrane which is permeable to the solvent and impermeable to the substrate and to the catalyst or at least one of the reactants, d) returning solvent from the permeate side of the first membrane to dilute the fresh substrate, and e) returning retentate comprising substrate which has not reacted, from the first filtration membrane to the reactor.

PROCESS FOR ISOLATING AND PRODUCING A HIGH MILK PHOSPHOLIPID INGREDIENT FROM A DAIRY BY-PRODUCT AND PRODUCTS THEREOF

Disclosed herein is a process for isolating phospholipids from milk by-products, such as acid whey, the process comprising: a) exposing milk by-products to filtration, thereby enriching for phospholipids; and b) solubilizing and removing whey proteins and caseins; thereby isolating phospholipids from the milk by-product. Also disclosed are products produced by this method. 1. A process for isolating phospholipids from acid whey , the process comprising:a. exposing acid whey to filtration, thereby enriching for phospholipids;b. solubilizing and removing proteins and caseins; thereby isolating phospholipids from acid whey.2. The process of whereby the acid whey is derived from cottage cheese.3. The process of claim 2 , wherein the cottage cheese is filtered to remove curds from the acid whey.4. The process of claim 1 , wherein the acid whey is exposed to diafiltration and/or ultrafiltration in step a).5. The process of claim 4 , wherein the ultrafiltration is carried out using a membrane with a 50 kDa molecular weight cutoff.6. The process of claim 1 , wherein after filtration claim 1 , a retentate is obtained claim 1 , wherein the retentate comprises concentrated caseins claim 1 , whey proteins claim 1 , phospholipids claim 1 , and residual fat.7. The process of claim 6 , wherein after filtration claim 6 , the retentate is exposed to centrifugation.8. The process of claim 7 , wherein after centrifugation claim 7 , supernatant comprising water and at least 60% of proteins present in whey are removed from precipitate.9. The process of claim 8 , wherein said precipitate comprises residual caseins claim 8 , phospholipids claim 8 , and residual fat.10. The process of claim 9 , wherein proteins and caseins are removed from the precipitate via chemical solubilization.11. The process of claim 10 , wherein tri-sodium citrate or ammonium hydroxide is used to remove aggregate proteins claim 10 , and solubilize caseins which remain in supernatant.12. The process of claim 11 , ...

СПОСОБ ТРАВЛЕНИЯ ЛИСТОВОЙ СТАЛИ

FIELD: metallurgy.SUBSTANCE: invention relates to etching of sheet steel. The method includes etching of sheet steel 8 with constant submersion thereof in an etching bath 1 containing an etching solution 10. Said bath is therein connected with a purification unit containing a recirculation tank 3 and circulation means 12 and 13, a constant incoming stream 11 of said solution is supplied to an ultrafiltration apparatus 2 from the recirculation tank 3, and two streams exit the ultrafiltration apparatus - one filtered stream 21 supplied back to said recirculation tank 3, and one unfiltered stream 22.EFFECT: invention ensures protection of the recirculation circuit from clogging during etching, as well as reduction in the rate of polymerisation kinetics of colloidal silicon.14 cl, 1 dwg, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 756 224 C1 (51) МПК C23G 1/08 (2006.01) C23G 1/36 (2006.01) C23G 3/02 (2006.01) B01D 61/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B01D 61/145 (2020.08); C23G 1/08 (2020.08); C23G 1/36 (2020.08); C23G 3/021 (2020.08); B01D 2239/1216 (2020.08); B01D 2311/04 (2020.08); B01D 2311/25 (2020.08) (21)(22) Заявка: 2020123990, 20.12.2018 20.12.2018 Дата регистрации: 28.09.2021 (56) Список документов, цитированных в отчете о поиске: DE 4116353 C1, 05.11.1992. RU 2434975 C2, 27.11.2011. JP 632814 A, 07.01.1988. WO 2014036575 A1, 13.03.2014. RU 2219286 C2, 20.12.2003. RU 2139594 C1, 10.10.1999. 21.12.2017 IB PCT/IB2017/058271 (45) Опубликовано: 28.09.2021 Бюл. № 28 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 21.07.2020 (86) Заявка PCT: 2 7 5 6 2 2 4 (73) Патентообладатель(и): АРСЕЛОРМИТТАЛ (LU) Приоритет(ы): (30) Конвенционный приоритет: R U (24) Дата начала отсчета срока действия патента: (72) Автор(ы): НАВЕС АРНАЛЬДОС, Андреа (ES), ПЬЕДРА ФЕРНАНДЕС, Элена (ES), МЕНЕНДЕС ДЕЛЬМИРО, Ванеса (ES), ЛОПЕС ГОНСАЛЕС, Саломе (ES) 2 7 5 6 2 2 4 R U (87) Публикация заявки PCT: ...

Method for producing sugar solution

The present invention improves the filterability in a solid-liquid separation of a saccharified solution using a microfiltration membrane, by adjusting a lignin content of a pretreatment substance derived from a cellulose-containing biomass to 8.5% or lower whereby a cake, in which a solid content in the saccharified solution is concentrated on a membrane surface, is more likely to be formed. In addition, the present invention enables an efficient solid-liquid separation of the saccharified solution using the microfiltration membrane by collecting the cake formed on the membrane surface.

FLUID TREATMENT SYSTEM

Provided herein is the design and synthesis of novel molecular rotor fluorophores useful for detection of amyloid or amyloid like proteins. The fluorophores are designed to exhibit enhanced fluorescence emission upon associating with amyloid or amyloid like proteins as compared to unbound compound. For example, provided herein are compounds of Formula (Id) or (le), or a salt or solvate thereof: Also disclosed herein are the methods for treating of diseases associated with an amyloid or amyloid like proteins.

METHOD FOR PRODUCING SUGAR SOLUTION

A method for producing a sugar solution by filtering a cellulose-derived sugar solution through one or more separation membranes selected from an ultrafiltration membrane, a nanofiltration membrane, and a reverse-osmosis membrane, wherein it is possible to effectively clean dirty separation membranes by cleaning separation membranes, which are dirty as a result of filtration, by using a cleaning fluid containing an alkaline substance and an aromatic compound, and cleaning at a temperature of 10°C or higher and less than 50°C.

METHOD OF EXTRACTING WATER, METALS AND ORGANIC SUBSTANCES DURING THE PRODUCTION OF POLYCARBOXYLIC ACID

УЛУЧШЕННЫЙ СПОСОБ В РАЗБАВЛЕННОЙ ХИМИЧЕСКОЙ РЕАКЦИИ СО СТАДИЕЙ МЕМБРАННОГО ОТДЕЛЕНИЯ

FIELD: chemistry. SUBSTANCE: method of chemical reaction of the substrate in the diluted reaction mixture containing solvent, where the reaction is selected from a reaction circuit cycle, a polymerisation reaction, enzymatic reaction, which exhibits inhibition of enzymatic reaction substrate, exhibiting inhibiting product of reaction, which exhibits deposition the substrate or reagent, and their combinations, where the method involves the following steps: a) feeding the dissolved mixture of substrate and a solvent in the reactor inlet, b) inducing interaction reaction medium in the reactor, c) discharge from the outlet hole of the reactor reaction mixture containing reaction product, solvent and unreacted substrate, d) conducting a reaction mixture at first filtration membrane with side retentate and permeate side, where the first filtration membrane is permeable for solvent, provides impermeability for substrate and has clipping substrate 80-100 %, e) returning retentate containing unreacted substrate, on the side of the first membrane filtration retentate in reactor, at the stage (a) said substrate and solvent mixture is fed into said inlet opening of said reactor of feed system with dilution of the substrate, dilution of substrate supply tank substrate; the method further includes a step of return solvent, passed through the first filtration membrane permeate side of the first membrane system to feed with dilution of the substrate for dilution of the substrate. EFFECT: improved method of chemical reaction. 22 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 591 161 C2 (51) МПК B01D 61/02 (2006.01) B01D 61/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014145482/05, 19.04.2013 (24) Дата начала отсчета срока действия патента: 19.04.2013 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): БЮКЕНХОУДТ Анита (BE), ВАНДЕЗАНДЕ Питер (BE), ОРМЕРОД Доминик (BE) 20.04.2012 EP 12165047.7 (43) ...

СПОСОБ ПОЛУЧЕНИЯ РАСТВОРА САХАРА

FIELD: technological processes. SUBSTANCE: disclosed is a method of producing sugar-containing liquid obtained from cellulose-containing biomass. Method comprises (a) fermentative saccharification of a pretreatment product having lignin content of 1 % to 8.5 %, obtained from pretreatment of cellulose-containing biomass to obtain saccharified fluid; (b) filtering the saccharified liquid obtained in step (a), directly through a microfiltration membrane selected from a group consisting of a hollow fiber membrane, a tubular membrane and a flat membrane, with provision of formation of filtration sediment layer on membrane surface from supply side with simultaneous production of sugar-containing liquid on side of abducting permeate; and (c) collecting a layer of a filter cake formed on the surface of the membrane at step (b) by peeling it from the membrane. EFFECT: invention ensures production of sugar-containing liquid with reduced turbidity. 10 cl, 1 dwg, 7 tbl, 15 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК C12P 19/14 B01D 61/14 B01D 65/02 C13K 1/02 (11) (13) 2 739 007 C2 (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C12P 19/14 (2020.08); B01D 61/14 (2020.08); B01D 65/02 (2020.08); C13K 1/02 (2020.08) (21)(22) Заявка: 2017135380, 23.03.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: 21.12.2020 24.03.2015 JP 2015-061103 (43) Дата публикации заявки: 08.04.2019 Бюл. № 10 (45) Опубликовано: 21.12.2020 Бюл. № 36 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 05.10.2017 JP 2016/059079 (23.03.2016) (87) Публикация заявки PCT: R U 2 7 3 9 0 0 7 WO 2016/152883 (29.09.2016) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) СПОСОБ ПОЛУЧЕНИЯ РАСТВОРА САХАРА (57) Реферат: Предложен способ получения сахаросодержащей жидкости, получаемой из целлюлозосодержащей биомассы. Способ включает (а) ...

Ammonia Separation

A process is disclosed for the separation of ammonia from ammonia-rich fluid waste. The fluid waste is contacted with the inlet side of a hydrophobic microporous membrane permeable to ammonia. The outlet side of the membrane is contacted with acid solution, so that ammonia permeating through the hydrophobic microporous membrane is converted to an ammonium salt. An antisolvent is mixed with the acid solution at the outlet side of the membrane, the antisolvent being an antisolvent for the ammonium salt in the acid solution. Particles of the ammonium salt are thereby precipitated at the outlet side of the hydrophobic microporous membrane. Suitably, the fluid waste is nitrogen rich sludge from an anaerobic digester. Preferably, the acid is sulfuric acid, and the antisolvent may be dimethyl sulfoxide (DMSO). Ammonium ions in the fluid waste can be converted to ammonia by adding an alkali to the fluid waste and/or by heating the fluid waste. The membrane may be a hollow fibre membrane. Also disclosed ...

METHOD FOR MANUFACTURING LITHIUM HYDROXIDE AND LITHIUM CARBONATE, AND DEVICE THEREFOR

The present invention relates to a method for manufacturing lithium hydroxide and lithium carbonate, and a device therefor. The present invention provides a method for manufacturing lithium hydroxide, comprising: a step of dissolving lithium phosphate in an acid; a step of preparing a monovalent ion selective-type electrodialysis device disposed in the order of a cathode cell containing a cathode separator, a monovalent anion selective-type dialysis membrane for selectively permeating a monovalent anion, a monovalent cation selective-type dialysis membrane for selectively permeating a monovalent cation, and an anode cell containing an anode separator, and injecting the lithium phosphate dissolved in the acid between the anode separator of the anode cell and the monovalent cation selective-type dialysis membrane, and between the cathode separator of the cathode cell and the monovalent anion selective-type dialysis membrane, respectively, and injecting water between the monovalent cation ...

Method for producing pure sugar solution, and method for producing chemical product

本发明提供一种在糖水溶液制造工序中除去在由含纤维素生物质制造糖的工序中所生成的发酵阻碍物质的方法、以及长期稳定地制造发酵阻碍物质的量极少的精制糖水溶液的方法。所述精制糖水溶液制造方法为以含纤维素生物质为原料来制造精制糖水溶液的方法，该方法由如下工序构成：(1)对含纤维素生物质进行分解处理以制造糖水溶液的工序，(2)对(1)中所得到的糖水溶液进行凝聚处理的工序，(3)使(2)中所得到的糖水溶液通过微滤膜和/或超滤膜以进行过滤，并从透过侧回收糖水溶液的工序，(4)使(3)中所得到的糖水溶液通过纳滤膜和/或反渗透膜以进行过滤，并且从非透过侧回收精制糖水溶液、从透过侧除去发酵阻碍物质的工序。

폴리카르복실산 제조 공정으로부터 물, 금속 및 유기물의 회수 방법

... 본 발명은 폴리카르복실산의 제조 공정 중 분리 단계 유래의 모액 스트림 내의 물, 금속, 가용성 유기물 및 불용성 유기물을 회수하는 방법을 제공하며, 이 방법은, 모액 스트림을, 용해된 유기물이 석출되는 온도로 냉각시키는 단계; 석출된 유기물을 액체 스트림으로부터 분리하고, 상기 유기물을폴리카르복실산의 제조 공정으로 재순환시키는 단계; 단계 (b)의 액체 스트림에 알칼리를 처리하여, 잔류 유기물을 알칼리 염 형태로 변환시키고, 존재하는 금속을 불용성 형태로 변환시키는 단계; 불용성 금속을 액체 스트림으로부터 회수하는 단계; 유기물의 알칼리 염을 포함하는 단계 (d)의 액체 스트림을 막 분리 유닛에 통과시켜, 물을 포함하는 투과물과, 물 및 알칼리 유기 염을 포함하는 농축물(retentate)로 분리하는 단계; 투과물을 회수하고, 투과물을 폴리카르복실산의 제조 공정으로 재순환시키는 단계; 및 농축물을 회수하는 단계를 포함한다.

MEMBRANE SEPREATION APPARATUS

... 본 발명은 막 분리 장치에 관한 것으로서, 본 발명의 분리 장치에 의하면, 작은 면적의 분리막을 이용하여 분리하고자 하는 성분을 고 선택도로 분리할 수 있어, 공정의 효율성 및 경제성을 탁월하게 향상시킬 수 있다.

A MICROCROP DERIVED ELECTROLYTE DRINK, DRIED BASE POWDER, AND MILK, AND METHODS FOR GENERATING THE SAME

Process

Method for smelting metal oxide ore

Provided is a method for smelting a metal oxide ore for obtaining a metal sulfide, wherein the method makes it possible to efficiently recover a fine metal sulfide included in an overflow solution and reduce the recovery cost of metal components when concentrating and separating a metal sulfide using a thickener or other precipitation separation device. The present invention pertains to a method for smelting a metal oxide ore containing nickel and cobalt, wherein the method has: a step S1 for performing pressurized acid leaching of a metal oxide ore and obtaining an acidic solution of nickel and cobalt; a step S2 for neutralizing the acidic solution; a step S3 for carrying out a sulfurization process by adding a sulfurizing agent to a neutralized final solution, and obtaining a slurry of a mixed sulfide of nickel and cobalt; a step S4 for precipitating and separating the mixed sulfide from the slurry of the mixed sulfide; and a step S5 for microfiltering an overflow solution from which ...

Method for producing sugar solution

The present invention improves the filterability in a solid-liquid separation of a saccharified solution using a microfiltration membrane, by adjusting a lignin content of a pretreatment substance derived from a cellulose-containing biomass to 8.5% or lower whereby a cake, in which a solid content in the saccharified solution is concentrated on a membrane surface, is more likely to be formed. In addition, the present invention enables an efficient solid-liquid separation of the saccharified solution using the microfiltration membrane by collecting the cake formed on the membrane surface.

Method and system for extracting long chain dicarboxylic acid

The present disclosure provides a method and a system for extracting long chain dicarboxylic acid, the method comprising: (1) subjecting a long chain dicarboxylic acid fermentation broth to a primary membrane filtration treatment to give a first filtrate; subjecting the first filtrate to decolorization, acidification/crystallization, and solid-liquid separation treatments to give a first solid; (2) mixing the first solid, a base and water to form a solution; subjecting the solution to a secondary membrane filtration treatment to give a second filtrate; subjecting the second filtrate to decolorization, acidification/crystallization, and solid-liquid separation treatments to give a second solid; and (3) mixing the second solid and water to form a mixture; subjecting the mixture to a thermostatic treatment at 105-150° C., followed by cooling for crystallization and solid-liquid separation treatment. By the method, the resulted long chain dicarboxylic acid product has a high purity and no residual ...

A method for treating alkaline brines

Disclosed herein is a method for treating an alkaline brine. The method comprises adding a source of magnesium ions to the alkaline brine. A resultant magnesium-containing precipitate is separated to produce a spent brine. If the spent brine contains a sufficient amount of carbonate or bicarbonate ions, the spent brine is processed to recover a carbonate product.

METHOD AND APPARATUS FOR HIGH WATER EFFICIENCY MEMBRANE FILTRATION TREATING HARD WATER

ABSTRACT The present concept is a method for the treatment of hard water using reverse osmosis (RO) membranes wherein the permeate of the membranes is fluid connected to the water source via pressurized storage as well as to the fluid connection for use, the method includes the steps of; providing a dedicated volume of permeate water directly fluid connected to the inlet of the recirc loop in order to reduce the conductivity of the water in the recirc loop at the end of production; and flowing sanitary fully pressurized storage of treated water from one end of the tank to the other, ensuring all surfaces of the tank are fully rinsed and storing water with low TDS, low pH (less than pH 7) and low TOC ensuring sanitary storage. 1 1 Date Recue/Date Received 2020-11-23 IN THE CANADIAN PATENT OFFICE REVOCATION OF APPOINTMENT OF AGENT AND APPOINTMENT OF ANQTHER AGENT To: The Commissioner of Patents CIPO, Patent Office Ottawa-Gatineau, Canada, K1A 0C9 Re: Application No. 3,063,650 The undersigned ...

METHOD AND APPARATUS FOR TREATING ACCOMPANIED WATER FROM WELL

As a method and apparatus for removing soluble silica efficiently from accompanied water produced from wells containing calcium ion and soluble silica, and not clogging a reverse osmosis membrane in the reverse osmosis membrane treatment process after that, it is to provide a method comprising magnesium salt adding process, wherein a magnesium salt is added to mix with the accompanied water contain:mg calcium ion, soluble silica and sulfate ion produced from a well under alkaline conditions to produce insoluble silica and calcium sulfate; a MF membrane treatment process, wherein a first reaction solution obtained in said magnesium salt adding process is treated with a MF membrane to separate the insolubilized silica and calcium sulfate by filtration; an acid adding process, wherein an acid is added to and mixed with filtrate obtained in said MF membrane treatment process to render pH value of said filtrate into the range from 5 to 9 and Langeliar saturation index into the range of minus; and a RO membrane treatment process, wherein a second reaction solution obtained in said acid adding process is treated with a RO membrane to obtain fresh water and RO membrane concentrates, and an apparatus therefore.

METHOD FOR PRODUCING PURE SUGAR SOLUTION, AND METHOD FOR PRODUCING CHEMICAL PRODUCT

Provided is a method for removing, during a step for producing a sugar solution, a fermentation inhibiting substance, which is generated during a step for producing sugar from a cellulose-containing biomass. Also provided is a method for steadily generating a pure sugar solution, which has an extremely low content of a fermentation inhibiting substance, over a long period of time. Specifically, disclosed is a method for producing a pure sugar solution, which uses a cellulose-containing biomass as the starting material and which involves: a step (1) for producing a sugar solution by subjecting a cellulose-containing biomass to decomposition treatment; a step (2) for subjecting the sugar solution obtained in step (1) to coagulation treatment; a step (3) for filtering the sugar solution obtained in step (2) by means of a microfiltration membrane and/or an ultra-filtration membrane, and for collecting the sugar solution from the permeate side; and a step (4) for filtering the sugar solution ...

Membrane separation device

MULTI-STAGE SULFUR REMOVAL SYSTEM AND PROCESS FOR AN AUXILIARY FUEL SYSTEM

감소하는 분리 온도를 갖는 막 캐스케이드

... 본 발명은 적어도 2 개의 스테이지들을 가지는 막 캐스케이드의 보조로 물질 혼합물을 분리하기 위한 방법에 관한 것으로, 상기 방법에 따르면 적어도 하나의 막을 이용한 물질 분리는 각각의 스테이지에 할당된 분리 온도로 각각의 스테이지에서 일어난다. 본 발명은 또한 대응하는 막 캐스케이드, 균질 촉매화된 반응 혼합물들로부터 촉매 분리를 위한 상기 막 캐스케이드의 용도, 및 막 캐스케이드에 의해 촉매 분리가 일어나는 하이드로포밀화를 위한 방법에 관한 것이다. 본 발명은, 최소 가능한 막 면적으로 처리하고 요구되는 분리 작업 및 분리 산출을 여전히 실현하는, 물질 혼합물들을 분리하기 위한 막 기반 방법을 구체화하는 문제점을 해결한다. 이 문제점은 감소하는 분리 온도를 갖는 막 캐스케이드의 사용에 의해 해결된다.

СПОСОБ ПОЛУЧЕНИЯ РАСТВОРА САХАРА

УЛУЧШЕННЫЙ СПОСОБ В РАЗБАВЛЕННОЙ ХИМИЧЕСКОЙ РЕАКЦИИ СО СТАДИЕЙ МЕМБРАННОГО ОТДЕЛЕНИЯ

... 1. Способ проведения химической реакции субстрата (X) в разбавленной реакционной смеси, содержащей растворитель (S), где реакция выбрана из реакции замыкания цикла, реакции полимеризации, ферментативной реакции, проявляющей ингибирование субстратом, ферментативной реакции, проявляющей ингибирование продуктом, реакции, проявляющей осаждение субстрата или реагента, и их комбинаций, где данный способ включает следующие стадии:a) подачу разбавленной смеси субстрата и растворителя во впускное отверстие (3) реактора (2),b) вызывание взаимодействия реакционной среды в реакторе (2),c) выгрузку из выпускного отверстия (4) реактора (2) реакционной смеси, содержащей продукт реакции, растворитель, и не прореагировавший субстрат,d) проведение реакционной смеси на первую фильтрационную мембрану (6), имеющую сторону (10) ретентата и сторону (11) пермеата, где первая фильтрационная мембрана (6) проницаема для растворителя (S), обеспечивает непроницаемость для субстрата (X) и имеет отсечение субстрата 80 ...

Method for producing sugar solution

A method for producing a sugar solution by filtering a cellulose-derived sugar solution through one or more separation membranes selected from an ultrafiltration membrane, a nanofiltration membrane, and a reverse-osmosis membrane, wherein it is possible to effectively clean dirty separation membranes by cleaning separation membranes, which are dirty as a result of filtration, by using a cleaning fluid containing an alkaline substance and an aromatic compound, and cleaning at a temperature of 10°C or higher and less than 50°C.

A METHOD FOR TREATING ALKALINE BRINES

Disclosed herein is a method for treating an alkaline brine. The method comprises adding a source of magnesium ions to the alkaline brine. A resultant magnesium-containing precipitate is separated to produce a spent brine. If the spent brine contains a sufficient amount of carbonate or bicarbonate ions, the spent brine is processed to recover a carbonate product.

IMPROVED DILUTE CHEMICAL REACTION PROCESS WITH MEMBRANE SEPARATION STEP

Disclosed is a process for carrying out a cyclisation reaction, a polymerization reaction, an enzymatic reaction showing substrate inhibition, an enzymatic reaction showing product inhibition, a reaction showing precipitation of the substrate or of a reactant, the process comprising the steps of a) diluting a fresh substrate (X) with solvent (S) to form a diluted substrate- solvent mixture, and supplying this mixture to a reactor (2), b) causing the reaction medium in the reactor to react, c) discharging reaction mixture comprising reaction product, solvent, and substrate that has not reacted, to a first filtration membrane (6) which is permeable to the solvent and impermeable to the substrate and to the catalyst or at least one of the reactants, d) returning solvent from the permeate side (11) of the first membrane to dilute the fresh substrate, and e) returning retentate (10) comprising substrate which has not reacted, from the first filtration membrane to the reactor.

Process for preparing acetals and ketals

MANUFACTURING APPARATUS AND METHOD OF EXPANDABLE POLYSTYRENE

... 본 발명은 발포성 폴리스티렌의 제조 장치 및 방법에 관한 것으로서, 본 발명의 제조 장치에 의하면, 작은 면적의 분리막을 이용하여 분리하고자 하는 성분, 특히 휘발성 유기화합물(VOC)을 고선택도로 분리할 수 있어, 공정의 효율성 및 경제성을 탁월하게 향상시킬 수 있을 뿐만 아니라, VOC를 분리 및 회수함으로써, 지구 온난화에 의한 환경오염을 예방할 수 있는 효과가 있다.

A METHOD FOR TREATING ALKALINE BRINES

Disclosed herein is a method for treating an alkaline brine. The method comprises adding a source of magnesium ions to the alkaline brine. A resultant magnesium-containing precipitate is separated to produce a spent brine. If the spent brine contains a sufficient amount of carbonate or bicarbonate ions, the spent brine is processed to recover a carbonate product.

Verfahren zur Behandlung von Prozesswasser

Im Rahmen der hydrothermalen Karbonisierung von Biomasse entsteht neben dem Hauptprodukt Kohle die Plattformchemikalie 5-Hydroxymethylfurfural sowie Furfural und Lävulinsäure. Diese werden aus dem Prozesswasser der Karbonisierungsreaktion extrahiert. Hierbei besteht jedoch das Problem, dass sich Huminstoffe an den Behälterwänden der Extraktionskolonne anlagern und nur durch großen Reinigungsaufwand wieder entfernt werden können. Zudem verschlechtern Oligomere die Reinheit des Produkts deutlich. Dieses Problem wird durch eine Filtrationskaskade gelöst, welche das Prozesswasser vor der Extraktion durchläuft. Hierbei werden zunächst die genannten Störstoffe in einer ersten Filtrationsstufe entfernt und die verbleibenden Produkte und Edukte in einer zweiten Filtrationsstufe voneinander getrennt. Lediglich die Produkte werden der Extraktion zugeführt.

Method for producing sugar solution

A method for producing a sugar solution by filtering a cellulose-derived sugar solution through one or more separation membranes selected from an ultrafiltration membrane, a nanofiltration membrane, and a reverse-osmosis membrane, wherein it is possible to effectively clean dirty separation membranes by cleaning separation membranes, which are dirty as a result of filtration, by using a cleaning fluid containing an alkaline substance and an aromatic compound, and cleaning at a temperature of 10°C or higher and less than 50°C.

METHOD AND APPARATUS FOR TREATING ACCOMPANIED WATER FROM WELL

As a method and apparatus for removing soluble silica efficiently from accompanied water produced from wells containing calcium ion and soluble silica, and not clogging a reverse osmosis membrane in the reverse osmosis membrane treatment process after that, it is to provide a method comprising magnesium salt adding process, wherein a magnesium salt is added to mix with the accompanied water contain:mg calcium ion, soluble silica and sulfate ion produced from a well under alkaline conditions to produce insoluble silica and calcium sulfate; a MF membrane treatment process, wherein a first reaction solution obtained in said magnesium salt adding process is treated with a MF membrane to separate the insolubilized silica and calcium sulfate by filtration; an acid adding process, wherein an acid is added to and mixed with filtrate obtained in said MF membrane treatment process to render pH value of said filtrate into the range from 5 to 9 and Langeliar saturation index into the range of minus ...

METHOD FOR MANUFACTURING LITHIUM HYDROXIDE AND LITHIUM CARBONATE, AND DEVICE THEREFOR

The present invention relates to a method for manufacturing lithium hydroxide and lithium carbonate, and a device therefor. The present invention provides a method for manufacturing lithium hydroxide, comprising: a step of dissolving lithium phosphate in an acid; a step of performing an electrodialysis of said lithium phosphate dissolved in the acid in a monovalent ion selective electrodialysis device to provide an aqueous lithium chloride solution; wherein said monovalent ion selective electrodialysis device is disposed in the sequential order of a cathode cell containing a cathode separator, at least one pair of a monovalent anion selective dialysis membrane for selectively permeating a monovalent anion, a monovalent cation selective dialysis membrane for selectively permeating a monovalent cation, and an anode cell containing an anode separator. Lithium carbonate is prepared by a step of carbonating the lithium hydroxide by a reaction with carbon dioxide (CO2).

Membrane separation method and membrane separation device

Method for producing sugar liquid

In a process of producing a sugar liquid from a woody biomass, the conventional techniques have such a problem that a specific component contained in the sugar liquid from the woody biomass remarkably deteriorates the filtration performance when the sugar liquid is filtrated through a microfiltration membrane and/or an ultrafiltration membrane. In the present invention, it becomes possible to improve the filtration performance of the sugar liquid through the microfiltration membrane and/or the ultrafiltration membrane, and it also becomes possible to produce the sugar liquid with high efficiency by hydrolyzing the woody biomass to produce a liquid component and then reacting the liquid component with a mannanase.

METHOD FOR PICKLING STEEL SHEETS

The invention relates to a method for pickling steel sheets 8, said steel sheets being continuously dipped in a pickling bath 1, containing a pickling solution 10, said bath being connected to a treatment unit including a recirculation tank 3, circulation means 12 and 13, a continuous entering flow 11 of said solution being fed into an ultrafiltration device 2 from the recirculation tank 3 and two flows exits the ultrafiltration device, one filtered exiting flow 21 being then fed back inside said recirculation tank 3 and one unfiltered flow 22, said treatment unit including no storage tank.

METHOD FOR PRODUCING SUGAR SOLUTION

The present invention improves the filterability in a solid-liquid separation of a saccharified solution using a microfiltration membrane, by adjusting a lignin content of a pretreatment substance derived from a cellulose-containing biomass to 8.5% or lower whereby a cake, in which a solid content in the saccharified solution is concentrated on a membrane surface, is more likely to be formed. In addition, the present invention enables an efficient solid-liquid separation of the saccharified solution using the microfiltration membrane by collecting the cake formed on the membrane surface.

FLUID TREATMENT SYSTEM

Process

Amine-containing water concentration system and apparatus, and carbon dioxide recovery system

An amine-containing water concentration system comprising an apparatus 1, which comprises an osmotic pressure generator 10, and a carbon dioxide introducing unit 21. The osmotic pressure generator includes a treatment vessel 11 and a semipermeable membrane 14, that partitions the vessel into two chambers; a first chamber 12, to which water containing an amine is supplied, and a second chamber 13 capable of storing a working medium. The carbon dioxide introducing unit is capable of introducing CO2 into the water to be treated. The apparatus may also comprise a pump 22, to supply water to the first chamber, and/or a filter (23, fig. 3), in the flow path of the water to the first chamber. The concentration system may form part of a CO2 recovery system, which may comprise an absorption tower, a regeneration tower and an absorbent solution supply tank. The concentrated water may be supplied to these components.

Improved dilute chemical reaction process with membrane separation step

Disclosed is a process for carrying out a cyclisation reaction, a polymerization reaction, an enzymatic reaction showing substrate inhibition, an enzymatic reaction showing product inhibition, a reaction showing precipitation of the substrate or of a reactant, the process comprising the steps of a) diluting a fresh substrate (X) with solvent (S) to form a diluted substrate- solvent mixture, and supplying this mixture to a reactor (2), b) causing the reaction medium in the reactor to react, c) discharging reaction mixture comprising reaction product, solvent, and substrate that has not reacted, to a first filtration membrane (6) which is permeable to the solvent and impermeable to the substrate and to the catalyst or at least one of the reactants, d) returning solvent from the permeate side (11) of the first membrane to dilute the fresh substrate, and e) returning retentate (10) comprising substrate which has not reacted, from the first filtration membrane to the reactor.

Method for manufacturing lithium hydroxide and lithium carbonate, and device therefor

The present invention relates to a method for manufacturing lithium hydroxide and lithium carbonate, and a device therefor. The present invention provides a method for manufacturing lithium hydroxide, comprising: a step of dissolving lithium phosphate in an acid; a step of preparing a monovalent ion selective-type electrodialysis device disposed in the order of a cathode cell containing a cathode separator, a monovalent anion selective-type dialysis membrane for selectively permeating a monovalent anion, a monovalent cation selective-type dialysis membrane for selectively permeating a monovalent cation, and an anode cell containing an anode separator, and injecting the lithium phosphate dissolved in the acid between the anode separator of the anode cell and the monovalent cation selective-type dialysis membrane, and between the cathode separator of the cathode cell and the monovalent anion selective-type dialysis membrane, respectively, and injecting water between the monovalent cation ...

Method for pickling steel sheets

The invention relates to a method for pickling steel sheets 8, said steel sheets being continuously dipped in a pickling bath 1, containing a pickling solution 10, said bath being connected to a treatment unit including a recirculation tank 3, circulation means 12 and 13, a continuous entering flow 11 of said solution being fed into an ultrafiltration device 2 from the recirculation tank 3 and two flows exits the ultrafiltration device, one filtered exiting flow 21 being then fed back inside said recirculation tank 3 and one unfiltered flow 22, said treatment unit including no storage tank.

REMOVAL OF AMMONIA FROM AMMONIA-CONTAINING WATER USING AN ELECTRODIALYSIS PROCESS

A process and system for removing ammonia from an aqueous ammonia solution. A first aqueous solution and the ammonia solution are flowed respectively through a first and a second separation chamber of a bipolar membrane electrodialysis ("BPMED") stack. The first separation chamber is bounded on an anodic side by a cation exchange membrane and the second separation chamber is bounded on a cathodic side by the cation exchange membrane and on an anodic side by a bipolar membrane. The bipolar membrane has an anion-permeable layer and a cation- permeable layer respectively oriented to face the stack's anode and cathode. While the solutions are flowing through the stack a voltage is applied across the stack that causes the bipolar membrane to dissociate water into protons and hydroxide ions. The protons migrate into the second separation chamber and react there with ammonia to form ammonium ions that migrate to the first separation chamber.

METHOD FOR PRODUCING SUGAR LIQUID

In a process of producing a sugar liquid from a woody biomass, the conventional techniques have such a problem that a specific component contained in the sugar liquid from the woody biomass remarkably deteriorates the filtration performance when the sugar liquid is filtrated through a microfiltration membrane and/or an ultrafiltration membrane. In the present invention, it becomes possible to improve the filtration performance of the sugar liquid through the microfiltration membrane and/or the ultrafiltration membrane, and it also becomes possible to produce the sugar liquid with high efficiency by hydrolyzing the woody biomass to produce a liquid component and then reacting the liquid component with a mannanase.

유체 처리 시스템

... 본 개시물은 임의의 실시예들에 따른 유체 처리 시스템 및 방법에 관한 것이다. 상기 유체 처리 시스템 및 방법들은 오염물들을 감소시키고 선택적으로 경도를 감소시키도록 작동될 수 있다. 상기 유체 처리 시스템은 오염된 유체를 제공하도록 구성된 공급 스트림, 상기 공급 스트림으로부터 상기 오염된 유체를 받도록 구성된 농축 탱크, 상기 농축 탱크로부터 상기 오염된 유체를 받도록 구성된 여과 유닛 및 상기 여과 유닛으로부터 처리된 유체를 받도록 작동할 수 있는 침투 스트림을 포함할 수 있다. 농축 탱크는 오염된 유체의 경도를 감소시키도록 작동할 수 있다. 여과 유닛은 오염된 유체로부터 오염물들을 여과시키도록 작동할 수 있다.

REMOVAL OF AMMONIA FROM AMMONIA-CONTAINING WATER USING AN ELECTRODIALYSIS PROCESS

A process and system for removing ammonia from an aqueous ammonia solution. A first aqueous solution and the ammonia solution are flowed respectively through a first and a second separation chamber of a bipolar membrane electrodialysis (“BPMED”) stack. The first separation chamber is bounded on an anodic side by a cation exchange membrane and the second separation chamber is bounded on a cathodic side by the cation exchange membrane and on an anodic side by a bipolar membrane. The bipolar membrane has an anion-permeable layer and a cation-permeable layer respectively oriented to face the stack's anode and cathode. While the solutions are flowing through the stack a voltage is applied across the stack that causes the bipolar membrane to dissociate water into protons and hydroxide ions. The protons migrate into the second separation chamber and react there with ammonia to form ammonium ions that migrate to the first separation chamber.

Method and Plant for Etching a Fluoropolymer Substrate

(Semi-) continuous etching method for a fluoropolymer substrate () comprising steps of feeding () said substrate () in the form of a continuous ribbon wherein said substrate defines a primary surface (), subjecting to at least one etching operations () a part of the primary surface () by means of an adhesion-promoting solution comprising a complex of an alkali metal in naphthalene, washing () the primary surface () wetted by the adhesion-promoting solution by means of a washing solution () comprising aqueous acetic acid/formic acid, and selectively separating a concentrated solution () of acetic acid/formic acid from the washing solution () by means of inverse osmosis operations () at ▪ increasing pressures, and re-introducing at least a portion of the concentrated solution () of acetic acid/formic acid in the washing solution () to create a recirculation. The invention further relates to an etching plant. 110. A (semi-)continuous etching method for increasing the surface adhesion of a fluoropolymer substrate () comprising , in sequence , the steps of:{'b': 22', '10', '12, 'feeding () a fluoropolymer substrate () in the form of continuous ribbon or film along a feeding direction (X), said substrate defining a primary surface ();'}{'b': 2', '12, 'subjecting to one or more etching operations () at least a part of the primary surface () by means of an adhesion-promoting solution comprising a complex of an alkali metal, such as sodium, in naphthalene;'}{'b': 4', '12', '42, 'washing () the part of the primary surface () wetted by the adhesion-promoting solution by means of a washing solution () comprising aqueous acetic acid or formic acid;'}{'b': 24', '42', '6', '8, 'selectively separating a concentrated solution () of acetic acid or of formic acid from the washing solution () by means of inverse osmosis operations (, ) at increasing pressure;'}{'b': 24', '42, 're-introducing at least a portion of the concentrated solution () of acetic acid or of formic acid in the ...

Process

Process

A process for recovering water, metals, soluble organics, and insoluble organics in a mother liquor stream from the separation stage of a process for the production of a polycarboxylic acid comprising: a) cooling the stream to precipitate dissolved organics; b) separating the precipitated organics from the liquid stream and recycling the organics to the process for the production of the polycarboxylic acid; c) treating the liquid stream from b) with an alkali/base to convert remaining organics to the alkali salt form and to convert metals present to an insoluble form; d) recovering the insoluble metals from the liquid stream; e) passing the liquid stream from d) comprising the alkali salts of the organics to a membrane separation unit where it is separated into a permeate comprising water and a retentate comprising water and alkali organic salts; f) recovering the permeate and recycling it to the process for the process for the production of the polycarboxylic acid; and g) recovering the ...

METHOD FOR PRODUCING SUGAR SOLUTION

A method for producing a sugar solution by filtering a cellulose-derived sugar solution through one or more separation membranes selected from an ultrafiltration membrane, a nanofiltration membrane, and a reverse-osmosis membrane, wherein it is possible to effectively clean dirty separation membranes by cleaning separation membranes, which are dirty as a result of filtration, by using a cleaning fluid containing an alkaline substance and an aromatic compound, and cleaning at a temperature of 10°C or higher and less than 50°C.

IMPROVED DILUTE CHEMICAL REACTION PROCESS WITH MEMBRANE SEPARATION STEP

Disclosed is a process for carrying out a cyclisation reaction, a polymerization reaction, an enzymatic reaction showing substrate inhibition, an enzymatic reaction showing product inhibition, a reaction showing precipitation of the substrate or of a reactant, the process comprising the steps of a) diluting a fresh substrate (X) with solvent (S) to form a diluted substrate- solvent mixture, and supplying this mixture to a reactor (2), b) causing the reaction medium in the reactor to react, c) discharging reaction mixture comprising reaction product, solvent, and substrate that has not reacted, to a first filtration membrane (6) which is permeable to the solvent and impermeable to the substrate and to the catalyst or at least one of the reactants, d) returning solvent from the permeate side (11) of the first membrane to dilute the fresh substrate, and e) returning retentate (10) comprising substrate which has not reacted, from the first filtration membrane to the reactor.

Purified polyether block copolymers method

Method for producing sugar

HYDROGEN REMOVAL FROM DEHYDROGENATION REACTOR PRODUCT

Disclosed is a dehydrogenation method that includes supplying a feed containing a hydrocarbon and steam into a dehydrogenation reactor containing a dehydrogenation catalyst, contacting the hydrocarbon and steam with the dehydrogenation catalyst to form a dehydrogenation product, wherein the dehydrogenation product comprises a dehydrogenated hydrocarbon, unreacted feed, steam and hydrogen, passing the dehydrogenation product through a membrane separator, and permeating hydrogen through a membrane positioned in the membrane separator. The hydrocarbon can be an alkyl aromatic and the dehydrogenated hydrocarbon can be a vinyl aromatic hydrocarbon, optionally the hydrocarbon can be an alkane and the dehydrogenated hydrocarbon can be an alkene.

METHOD AND APPARATUS FOR IN SITU PRODUCT RECOVERY

A method of obtaining a compound may include adding a substrate to a medium in a reactor, and reacting the substrate in the reactor to form the compound. A first stream is separated from the reaction liquid through a first membrane. A second stream is separated from the reaction liquid through a second membrane. The first membrane is a filtration membrane and the second membrane is configured for liquid-gas or liquid-liquid extraction The first membrane and the second membrane are at least partially immersed in the medium and are moved relative to the reactor during the separation steps.

METHOD FOR PRODUCING PURE SUGAR SOLUTION, AND METHOD FOR PRODUCING CHEMICAL PRODUCT

The invention provides a method that allows fermentation impeding substances that occur during production of a sugar from cellulose-containing biomass to be removed in an aqueous sugar solution production step, and also provides a method for long-term stable production of an aqueous refined sugar solution that is nearly free from fermentation impeding substances. The aqueous refined sugar solution production method using cellulose-containing biomass as feed material comprises: (1) a step of decomposing cellulose-containing biomass to produce an aqueous sugar solution, (2) a step of subjecting the aqueous sugar solution resulting from step (1) to coagulation treatment, (3) a step of subjecting the aqueous sugar solution resulting from step (2) to microfiltration and/or ultrafiltration to recover an aqueous sugar solution from the downstream side, (4) a step of subjecting the aqueous sugar solution resulting from step (3) to nanofiltration and/or reverse osmosis to recover an aqueous refined ...

Fluid treatment system

The present disclosure relates, according to some embodiments, to systems and methods of fluid treatment systems. Fluid treatment systems and methods thereof may be operable to remove contaminants and optionally reduce hardness. A fluid treatment system may comprise a feed stream configured to provide a contaminated fluid, a concentrate tank configured to receive the contaminated fluid from the feed stream, a filtration unit configured to receive the contaminated fluid from the concentrate tank, and a permeate stream operable to receive a treated fluid from the filtration unit. A concentrate tank may be operable to reduce hardness of the contaminated fluid. A filtration unit may be operable to filter contaminants from the contaminated fluid.

MÉTODO E APARELHO DE SPERAÇÃO DE MEMBRANA.

Method for treatment of process water

Within the scope of hydrothermal carbonization of biomass, not only the main product, coal, but also the platform chemical 5-hydroxymethyl furfural, as well as furfural and levulinic acid, are formed. These are extracted from the process water of the carbonization reaction. However, in this connection, the problem exists that humic substances deposit on the container walls of the extraction column and can only be removed again by means of great cleaning effort. Furthermore, oligomers clearly worsen the purity of the product. This problem is solved by a filtration cascade through which the process water passes before extraction. In this connection, first the impurities mentioned are removed in a first filtration stage, and the remaining products and educts are separated from one another in a second filtration stage. Only the products are passed to extraction.

Zweistufige Hydroformylierung mit Kreisgas- und SILP-Technologie

Die Erfindung betrifft Verfahren zur Herstellung von Aldehyden durch Hydroformylierung von Alkenen, bei welchem ein alkenhaltiges Einsatzgemisch mit Synthesegas in Gegenwart eines homogenen Katalysatorsystems einer primären Hydroformylierung unterworfen wird, wobei die primäre Hydroformylierung in einer primären Reaktionszone erfolgt, aus welcher kontinuierlich ein Kreisgas enthaltend zumindest ein Teil der Produkte, sowie nicht umgesetzte Edukte der primären Hydroformylierung abgezogen und teilweise kondensiert wird, wobei nicht kondensierte Anteile des Kreisgases in die primäre Reaktionszone zurückgeführt werden, und wobei kondensierte Anteile des Kreisgases in einer Aldehydabtrennung destillativ aufgetrennt werden in ein aldehydreiches Gemisch und in ein aldehydarmes Gemisch. Ihr liegt die Aufgabe zu Grunde, das Verfahren dahingehend weiterzubilden, dass es auch bei sich verschlechternder Rohstofflage hohe Umsätze erzielt und Aldehyd in guter Produktqualität liefert. Insbesondere soll ...

Amine-containing water concentration system and apparatus, and carbon dioxide recovery system

An amine-containing water concentration system comprising an apparatus 1, which comprises an osmotic pressure generator 10, and a carbon dioxide introducing unit 21. The osmotic pressure generator includes a treatment vessel 11 and a semipermeable membrane 14, that partitions the vessel into two chambers; a first chamber 12, to which water containing an amine is supplied, and a second chamber 13 capable of storing a working medium. The carbon dioxide introducing unit is capable of introducing CO2 into the water to be treated. The apparatus may also comprise a pump 22, to supply water to the first chamber, and/or a filter (23, fig. 3), in the flow path of the water to the first chamber. The concentration system may form part of a CO2 recovery system, which may comprise an absorption tower, a regeneration tower and an absorbent solution supply tank. The concentrated water may be supplied to these components.

The use of salt-containing raw water preparing hydrogen chloride or of an aqueous solution method and the products prepared therefrom, uses of products and the electrodialysis system

Method for producing sugar liquid

In a process of producing a sugar liquid from a woody biomass, the conventional techniques have such a problem that a specific component contained in the sugar liquid from the woody biomass remarkably deteriorates the filtration performance when the sugar liquid is filtrated through a microfiltration membrane and/or an ultrafiltration membrane. In the present invention, it becomes possible to improve the filtration performance of the sugar liquid through the microfiltration membrane and/or the ultrafiltration membrane, and it also becomes possible to produce the sugar liquid with high efficiency by hydrolyzing the woody biomass to produce a liquid component and then reacting the liquid component with a mannanase.

Systems and Methods for Regenerating Liquid Solvents Used In the Removal of Organic Contaminants from Gaseous Mixtures

A method is provided of regenerating solvents used to remove gaseous contaminants from gaseous mixtures of various compositions with significantly reduced energy required, where one exemplary method includes directing a solution with the solvents and the preferentially absorbed and/or dissolved gaseous contaminants through a filter comprising a membrane having pre-determined diffusion rates so that a substantial portion of the gaseous contaminants pass through the filter, permitting the passage of the gaseous contaminants through the membrane for further processing, and recirculating the separated solvent so that it may be used again to remove new gaseous contaminants. In some cases, it may be desired to permit some of the solvent to pass through the membrane along with the gaseous contaminant.

Improved dilute chemical reaction process with membrane separation step

Disclosed is a process for carrying out a cyclisation reaction, a polymerization reaction, an enzymatic reaction showing substrate inhibition, an enzymatic reaction showing product inhibition, a reaction showing precipitation of the substrate or of a reactant, the process comprising the steps of a) diluting a fresh substrate (X) with solvent (S) to form a diluted substrate- solvent mixture, and supplying this mixture to a reactor (2), b) causing the reaction medium in the reactor to react, c) discharging reaction mixture comprising reaction product, solvent, and substrate that has not reacted, to a first filtration membrane (6) which is permeable to the solvent and impermeable to the substrate and to the catalyst or at least one of the reactants, d) returning solvent from the permeate side (11) of the first membrane to dilute the fresh substrate, and e) returning retentate (10) comprising substrate which has not reacted, from the first filtration membrane to the reactor.

Water Treatment and Delivery System for Dialysis Units

The disclosed technology relates to a water filtration and delivery system for a dialysis unit. The water nitration and delivery system including: a laminarizer, the laminizer producing a laminarizer flow; an ultrafiltration unit, the ultrafiltration unit being placed downstream and connected to the laminarizer, the ultrafiltration unit receiving the laminar flow from the laminarizer; and at least one carbon filter, the at least one carbon filter being placed downstream from the ultrafiltration unit, the at least one carbon filter receiving the laminar flow, wherein the laminar flow causes less stress on internal components of the ultrafiltration unit and the at least one carbon filter. 1. A water filtration and delivery system for a dialysis unit comprising:a laminarizer, the laminizer producing a laminarizer flow;an ultrafiltration unit, the ultrafiltration unit being placed downstream and connected to the laminarizer, the ultrafiltration unit receiving the laminar flow from the laminarizer; andat least one carbon filter, the at least one carbon filter being placed downstream from the ultrafiltration unit, the at least one carbon filter receiving the laminar flow.wherein the laminar flow causes less stress on internal components of the ultrafiltration unit and the at least one carbon filter.2. The water filtration and delivery system of wherein the laminarizer includes a series of coils in a geometry that initializes the laminar flow before the water enters the ultrafiltration system.3. The water filtration and delivery system of further comprising:at least one horizontal pipe, the at least one horizontal pipe being placed between one of the laminarizer, the ultrafiltration unit and the at least one carbon filter, the at least one horizontal pipe having a downward slope thereby maintaining constant fluid acceleration and preventing turbulence for the laminar flow.4. The water filtration and delivery system of wherein the at least one horizontal pipe includes a ...

Method for producing sugar liquid

In a process of producing a sugar liquid from a woody biomass, the conventional techniques have such a problem that a specific component contained in the sugar liquid from the woody biomass remarkably deteriorates the filtration performance when the sugar liquid is filtrated through a microfiltration membrane and/or an ultrafiltration membrane. In the present invention, it becomes possible to improve the filtration performance of the sugar liquid through the microfiltration membrane and/or the ultrafiltration membrane, and it also becomes possible to produce the sugar liquid with high efficiency by hydrolyzing the woody biomass to produce a liquid component and then reacting the liquid component with a mannanase.

A method for treating alkaline brines

Disclosed herein is a method for treating an alkaline brine. The method comprises adding a source of magnesium ions to the alkaline brine. A resultant magnesium-containing precipitate is separated to produce a spent brine. If the spent brine contains a sufficient amount of carbonate or bicarbonate ions, the spent brine is processed to recover a carbonate product.

Multi-stage sulfur removal system and process for an auxiliary fuel system

MULTI-STAGE SULFUR REMOVAL SYSTEM AND PROCESS FOR AN AUXILIARY FUEL SYSTEM

method for producing a liquid sugar

MULTI-STAGE SULFUR REMOVAL SYSTEM AND PROCESS FOR AN AUXILIARY FUEL SYSTEM

HYDROGEN REMOVAL FROM DEHYDROGENATION REACTOR PRODUCT

Disclosed is a dehydrogenation method that includes supplying a feed containing a hydrocarbon and steam into a dehydrogenation reactor containing a dehydrogenation catalyst, contacting the hydrocarbon and steam with the dehydrogenation catalyst to form a dehydrogenation product, wherein the dehydrogenation product comprises a dehydrogenated hydrocarbon, unreacted feed, steam and hydrogen, passing the dehydrogenation product through a membrane separator, and permeating hydrogen through a membrane positioned in the membrane separator. The hydrocarbon can be an alkyl aromatic and the dehydrogenated hydrocarbon can be a vinyl aromatic hydrocarbon, optionally the hydrocarbon can be an alkane and the dehydrogenated hydrocarbon can be an alkene.

METHOD FOR PRODUCING SUGAR SOLUTION

A method for producing a sugar solution by filtering a cellulose-derived sugar solution through one or more separation membranes selected from an ultrafiltration membrane, a nanofiltration membrane, and a reverse-osmosis membrane, wherein it is possible to effectively clean dirty separation membranes by cleaning separation membranes, which are dirty as a result of filtration, by using a cleaning fluid containing an alkaline substance and an aromatic compound, and cleaning at a temperature of 10°C or higher and less than 50°C.

METHOD FOR PRODUCING PURE SUGAR SOLUTION, AND METHOD FOR PRODUCING CHEMICAL PRODUCT

Provided is a method for removing, during a step for producing a sugar solution, a fermentation inhibiting substance, which is generated during a step for producing sugar from a cellulose-containing biomass. Also provided is a method for steadily generating a pure sugar solution, which has an extremely low content of a fermentation inhibiting substance, over a long period of time. Specifically, disclosed is a method for producing a pure sugar solution, which uses a cellulose-containing biomass as the starting material and which involves: a step (1) for producing a sugar solution by subjecting a cellulose-containing biomass to decomposition treatment; a step (2) for subjecting the sugar solution obtained in step (1) to coagulation treatment; a step (3) for filtering the sugar solution obtained in step (2) by means of a microfiltration membrane and/or an ultra-filtration membrane, and for collecting the sugar solution from the permeate side; and a step (4) for filtering the sugar solution ...

MEMBRANE-BASED PROCESS FOR BUTANOLS PRODUCTION FROM MIXED BUTENES

A method of separately producing tert-butanol and sec-butanol, comprising the steps of introducing a mixed butenes stream to a tube side of a reaction membrane unit, introducing a TBA reactor water feed to the tube side of the reaction membrane unit, introducing a sweep gas to a shell side of the reaction membrane unit, introducing an SBA reactor water feed to the shell side, allowing the mixed butenes stream to contact the tube side of a such that selective gases in the mixed butenes stream permeate through the membrane to the shell side, allowing the selective gases that permeate through the membrane to react with water to produce sec-butanol, allowing retentate gases that fail to permeate through the membrane to react with water to produce tert-butanol, collecting the tert-butanol in a TBA reactor effluent, and collecting the sec-butanol in a SBA reactor effluent.

Method for producing oligosilane and device for producing oligosilane

Provided is a method for producing oligosilane with which the desired oligosilane can be produced more efficiently. The oligosilane-containing reaction mixture fluid obtained by dehydrocondensation of hydrosilane is fed to a membrane separator under specific conditions and brought into contact with an adsorbent under specific conditions.

IMPROVED DILUTE CHEMICAL REACTION PROCESS WITH MEMBRANE SEPARATION STEP

Disclosed is a process for carrying out a cyclisation reaction, a polymerization reaction, an enzymatic reaction showing substrate inhibition, an enzymatic reaction showing product inhibition, a reaction showing precipitation of the substrate or of a reactant, the process comprising the steps of • a) diluting a fresh substrate (X) with solvent (S) to form a diluted substrate- solvent mixture, and supplying this mixture to a reactor (2), • b) causing the reaction medium in the reactor to react, • c) discharging reaction mixture comprising reaction product, solvent, and substrate that has not reacted, to a first filtration membrane (6) which is permeable to the solvent and impermeable to the substrate and to the catalyst or at least one of the reactants, • d) returning solvent from the permeate side (11) of the first membrane to dilute the fresh substrate, and • e) returning retentate (10) comprising substrate which has not reacted, from the first filtration membrane to the reactor.

System and method for preventing membrane fouling in reverse osmosis purification systems using hydrodynamic cavitation

Catalytic carbon fiber contactor

A fiber bundle contactor may include: a flow path defined by a conduit; a catalytic carbon fiber bundle disposed in the conduit; and an inlet allowing fluid flow into the flow path. A method may include: introducing into vessel a hydrocarbon comprising mercaptan sulfur, an aqueous caustic solution, and an oxidizer; reacting at least a portion of the mercaptan sulfur and the aqueous caustic solution to produce a mercaptide; and reacting the mercaptide and the oxidizer in the presence of a catalytic carbon fiber bundle to produce a disulfide oil.

Verfahren zum Vorhersagen einer Membranverschmutzung in einem Umkehrosmoseprozess

Ein Verfahren zum Vorhersagen einer Membranverschmutzung in einem Umkehrosmoseprozess umfasst das Sammeln von Informationen in Bezug auf den Umkehrosmoseprozess, der über eine vorbestimmte Zeitdauer durchgeführt wird, wobei die gesammelten Informationen einen Prozessfaktor und einen Wasserqualitätsfaktor umfassen, wobei der Prozessfaktor eine Durchflussrate von erzeugtem Wasser umfasst; das Berechnen einer Salzentfernungsrate und eines Druckabfalls auf der Basis der gesammelten Informationen; das Normieren der Durchflussrate von erzeugtem Wasser, der Salzentfernungsrate und des Druckabfalls; das Erzeugen einer Vorhersagegleichung unter Verwendung von normierten Werten der Durchflussrate von erzeugtem Wasser, der Salzentfernungsrate und der Druckabfallwerte; und Vorhersagen einer Membranverschmutzung durch die erzeugte Vorhersagegleichung, um eine Zeit der chemischen Reinigung zu bestimmen. Prozess- und Wasserqualitätsfaktoren werden auf Temperatur und/oder Durchflussrate normiert und die ...

수산화리튬, 및 탄산리튬의 제조 방법 및 그 장치

수산화리튬, 및 탄산리튬의 제조 방법 및 그 장치에 관한 것으로, 인산리튬을 산(acid)에 용해시키는 단계; 음극 분리막이 포함된 음극셀; 1가 음이온을 선택적으로 투과시키는 1가 음이온 선택형 투석막; 1가 양이온을 선택적으로 투과시키는 1가 양이온 선택형 투석막; 및 양극 분리막이 포함된 양극셀;이 순서대로 배치된 1가 이온 선택형 전기투석장치를 준비하여, 상기 산에 용해된 인산리튬을 상기 양극셀의 양극 분리막과 상기 1가 양이온 선택형 투석막 사이, 및 상기 음극셀의 음극 분리막과 상기 1가 음이온 선택형 투석막 사이에 각각 투입하고, 물을 상기 1가 양이온 선택형 투석막과 상기 1가 음이온 선택형 투석막 사이에 투입하는 단계; 상기 1가 이온 선택형 전기투석장치에 전류를 인가하여, 염화리튬 수용액을 수득함과 동시에 부산물로 형성되는 인산 수용액을 수득하는 단계; 및 상기 수득된 염화리튬 수용액을 수산화리튬 수용액으로 전환하는 단계;를 포함하는 수산화리튬의 제조 방법을 제공할 수 있다.

MEMBRANE SEPARATION METHOD AND MEMBRANE SEPARATION DEVICE

Disclosed are a membrane separation method and a membrane separation device, each of which enables to reduce deterioration in membrane separation performance during membrane separation of water to be processed by reducing adsorption of membrane contaminating materials contained in the water onto the membrane surface. Specifically, water to be processed is subjected to membrane separation after being added with particles made of a cationic polymer which swells but does not substantially dissolve in water. COPYRIGHT KIPO & WIPO 2010 ...

Decontamination System with Insoluble Additives

Exemplary decontamination systems of the present disclosure may allow for removing contaminants from a fluid. In an embodiment, a decontamination system may include a filtration unit operable to receive an adsorbent and contaminated fluid. The filtration unit may include a filter operable to separate the fluid from the adsorbent and contaminants adsorbed onto the adsorbent. In an embodiment, the decontamination system may further include a recovery unit operable to separate the adsorbent and the contaminants adsorbed onto the adsorbent.

Process and apparatus for extracting sulfur compounds in a hydrocarbon stream

One exemplary embodiment can be a process for extracting sulfur compounds in a hydrocarbon stream. The process can include feeding a hydrocarbon stream containing sulfur compounds to a prewash zone containing an alkali, withdrawing a prewashed hydrocarbon stream from the prewash zone, and feeding the prewashed hydrocarbon stream to a mass transfer zone for extracting one or more thiol compounds from the prewashed hydrocarbon stream. Often, the mass transfer zone includes a hollow fiber membrane contactor.

METHOD OF DESALINATION AND WASTEWATER TREATMENT IN A MICROBIAL DESALINATION CELL REACTOR

Method of desalination and wastewater treatment in a microbial desalination cell reactor is provided, the microbial desalination cell reactor has three compartments, an anodic compartment, a cathodic compartment and a saline compartment, the method is carried out by (a) adding electrically conductive particles or electrically conductive material in the anodic compartment and cathodic compartment, (b) adding bacteria species of the genus in the anodic compartment and several solutions in the compartments (c) replacing the solutions in the cathodic compartment and in the saline compartment and (d) oxidizing organic matter present in wastewater by bacteria from the genus in the anodic compartment and desalinating the solution in the saline compartment and (e)after 20 to 30 operation cycles, replacing the solution in the saline compartment by a solution of hypochlorite salt 1. A method of desalination and wastewater treatment in a microbial desalination cell reactor , wherein the microbial desalination cell reactor comprises three compartments , an anodic compartment , a cathodic compartment and a saline compartment , wherein an anionic exchange membrane is placed between the anodic compartment and the saline compartment and a cationic exchange membrane is placed between the cathodic compartment and the saline compartment , the method comprising:(a) adding electrically conductive particles or electrically conductive material in the anodic compartment and cathodic compartment,{'i': 'Geobacter', '(b) adding bacteria species of the genus in the anodic compartment, adding an aqueous solution comprising an electrolyte, as catholyte, in the cathodic compartment, adding a saline solution in the saline compartment and desalinating said saline solution by applying an external power supply,'}(c) when constant electric current is achieved, replacing the solution in the cathodic compartment by a first hypochlorite solution comprising soluble hypochlorite salts and replacing the ...

A PROCESS FOR PURIFICATION OF POLYETHER BLOCK COPOLYMERS

Process for providing purified polyether block copolymers comprising polyoxyethylene (PEO) and polyoxypropylene (PPO) moieties wherein the purified product is obtained by an ultrafiltration step of a solution of the polyether block copolymers and wherein the block copolymers are depleted in lower molecular impurities. 1. A process for providing purified polyether block copolymers comprising polyoxyethylene (PEO) and polyoxypropylene (PPO) moieties wherein the purified polyether block copolymer is obtained by an ultrafiltration step of a solution of the polyether block copolymer.2. The process according to claim 1 , wherein the polyether block copolymers comprising polyoxyethylene and polyoxypropylene moieties are selected from the group consisting of polyethylene oxide-block-polypropylene oxide copolymers and polyethylene oxide-polypropylene oxide random copolymers.3. The process according to claim 1 , wherein the polyether block copolymers comprising polyoxyethylene and polyoxypropylene moieties are triblock (PEO-PPO-PEO)-copolymers4. The process according to wherein the triblock (PEO-PPO-PEO)-copolymers are poloxamer 188 or poloxamer 407.5. The process according to claim 1 , wherein the solution of the polyether block copolymers treated by ultrafiltration is an aqueous solution or an organic solution or an aqueous-organic solvent mixture.6. The process according to claim 1 , wherein the solution of the polyether block copolymers treated by ultrafiltration is an aqueous solution.7. The process according to claim 1 , wherein a concentration of the polymer in the solution is 2-20% b.w.8. The process according to claim 1 , wherein a concentration of the polymer in the solution is 5-15% b.w.9. The process according to claim 1 , wherein the ultrafiltration is carried out using a membrane separating layer which is a ceramic or polymer or carbon material.10. The process according to claim 1 , wherein the ultrafiltration is carried out using a membrane separating layer ...

Conversion of fructose-containing feedstocks to hmf-containing product

The present invention relates generally to processes for converting fructose-containing feedstocks to a product comprising 5-(hydroxymethyl)furfural (HMF) and water in the presence of water, solvent and an acid catalyst. In some embodiments, the conversion of fructose to HMF is controlled at a partial conversion endpoint characterized by a yield of HMF from fructose that does not exceed about 80 mol %. In these and other embodiments, the processes provide separation techniques for separating and recovering the product, unconverted fructose, solvent and acid catalyst to enable the effective recovery and reutilization of reaction components.

PROCESS FOR THE PURIFICATION OF RECOMBINANT PROTEINS

A process for the extraction and purification of recombinant proteins, more specifically interferons and insulin, having improved quality and yield. The process comprises extraction of proteins from bacterial inclusion bodies using an extraction solution comprising at least one detergent; at least one chaotropic agent; at least one cosmotropic agent; and a protein folding agent. 1. An extraction solution for recovery of proteins from bacterial inclusion bodies , comprising:at least one detergent;at least one chaotropic agent;at least one cosmotropic agent; anda protein folding agent;wherein said extraction solution has a pH of between about 1.5 and about 12.2. The extraction solution of claim 1 , wherein said extraction solution has a pH of between about 7.2 and about 8.5.3. The extraction solution of claim 1 , wherein said chaotropic agent is selected from the group consisting of urea claim 1 , guanidinium chloride claim 1 , thiourea claim 1 , and mixtures thereof.4. The extraction solution of claim 1 , wherein said cosmotropic agent is selected from the group consisting of chloride salts claim 1 , sulfate salts claim 1 , and mixtures thereof.5. The extraction solution of claim 1 , wherein said cosmotropic agent is selected from the group consisting of sodium chloride claim 1 , potassium chloride claim 1 , ammonium sulfate claim 1 , and mixtures thereof.6. The extraction solution of claim 1 , wherein said protein folding agent is arginine.7. A kit for recovery of proteins from bacterial inclusion bodies claim 1 , comprising:an extraction solution for dissolving said proteins, comprising at least one detergent; at least one chaotropic agent; at least one cosmotropic agent; and arginine; andan oxidizing agent for oxidizing said dissolved proteins;wherein said extraction solution has a pH of between about 7.2 and about 8.5; andwherein said oxidizing agent is a thiol, a disulfide, or a mixture thereof.8. A process for recovery of a protein from bacterial inclusion ...

Device for removing microparticles contained in water and ultrapure-water prouction and supply system

In a subsystem or water-feed path located upsteam of a use point in an ultrapure water production/supply process, fine particles having a particle diameter of 50 nm or less, in particular 10 nm or less are highly removed. A device for removing fine particles in water has a membrane filtration device including a microfiltration membrane or an ultrafiltration membrane having a weak cationic functional group. The microfiltration membrane or the ultrafiltration membrane having a weak cationic functional group is preferred to have a polyketone film with the weak cationic functional group. Negatively-charged particles in water are adsorbed by the weak cationic functional group and can thus be removed.

DILUTE CHEMICAL REACTION PROCESS

Disclosed is a process for carrying out a cyclisation reaction, a polymerization reaction, an enzymatic reaction showing substrate inhibition, an enzymatic reaction showing product inhibition, a reaction showing precipitation of the substrate or of a reactant, the process comprising the steps of 261062. The process according to claim 1 , wherein the first filtration membrane () has a rejection of at least one compound selected from the reaction product claim 1 , catalyst and one or more of the reactants which are caused to react with the substrate of 60-95% claim 1 , and wherein the at least one compound is returned from the retentate side () of the first filtration membrane () to the reactor ().36. The process according claim 1 , wherein the first membrane () has a substrate rejection of at least 95%.4. (canceled)55277222172. The process according to wherein the diluting substrate feed system () for supplying substrate to the reactor () comprises a second filtration membrane () which is permeable to the solvent (S) claim 1 , wherein the permeability of the second filtration membrane () for the substrate (X) is selected such that the permeate (P) of the second membrane has a desired concentration of the substrate (X) in the solvent (S) claim 1 , wherein permeate (P) with the desired concentration of the substrate (X) in the solvent (S) is supplied from the permeate side () of the second filtration membrane () to the reactor ().67207887. The process according to claim 5 , wherein the second filtration membrane () comprises a retentate side () claim 5 , and substrate (X) which is rejected by the second filtration membrane () is supplied to a substrate feed tank () and is further mixed with solvent claim 5 , and wherein a mixture containing solvent and substrate is supplied from the substrate feed tank () to the second filtration membrane ().711687. The process according to claim 5 , comprising the returning of solvent (S) from the permeate side () of the first ...

Preparation of soy protein products ("s810")

The present invention is directed to soy protein products, very low in, or free of, beany flavour notes and useful for the fortification of food and beverage products and prepared without the use of salt in the process. The soy protein products of the present invention are obtained by extracting soy protein source with water to form an aqueous soy protein solution, at least partially separating the aqueous soy protein solution from residual soy protein source, adjusting the pH of the aqueous soy protein solution to a pH of about 1.5 to about 3.6 to solubilize at least a portion of the protein and form an acidified soy protein solution then separating the acidified soy protein solution from the acid insoluble solid material. The acidified soy protein solution may be dried following optional concentration and diafiltration to form a soy protein product, which may be an isolate. The acid insoluble solid material may be washed with acidified water and then dried to form another soy protein product. These products may be dried at the acidic pH at which they were prepared or may be adjusted in pH before drying.

Method for treatment of process water

Within the scope of hydrothermal carbonization of biomass, not only the main product, coal, but also the platform chemical 5-hydroxymethyl furfural, as well as furfural and levulinic acid, are formed. These are extracted from the process water of the carbonization reaction. However, in this connection, the problem exists that humic substances deposit on the container walls of the extraction column and can only be removed again by means of great cleaning effort. Furthermore, oligomers clearly worsen the purity of the product. This problem is solved by a filtration cascade through which the process water passes before extraction. In this connection, first the impurities mentioned are removed in a first filtration stage, and the remaining products and educts are separated from one another in a second filtration stage. Only the products are passed to extraction.

COMPLETE SAPONIFICATION AND ACIDULATION OF NATURAL OIL PROCESSING BYPRODUCTS AND TREATMENT OF REACTION PRODUCTS

The present invention generally provides a process for treating a soapstock. The present invention more particularly provides systems and methods for treating a soapstock to generate free fatty acids and/or fatty acid derivatives, e.g. fatty acid alkyl esters. The present invention more particularly provides systems and methods for realizing the full fatty acid yield of a soapstock by first converting substantially all of the saponifiable material in a soapstock to salts of fatty acids (soaps) and acidulating the soaps to generate free fatty acids and/or fatty acid derivatives, e.g. fatty acid alkyl esters, wherein the soapstock comprises soaps and saponifiable lipids, e.g. glycerides and/or phospholipids, and the generating of free fatty acids and/or fatty acid is achieved without the use of a mineral acid. 1. A method for generating free fatty acids from a mixed lipid feedstock , the method comprising:providing the mixed lipid feedstock;combining the mixed lipid feedstock with a base to form a mixture;allowing the mixture to react in a reaction vessel;introducing carbon dioxide into the reacted mixture in the reaction vessel to form a first carbonic acid within the reaction vessel;mixing the first carbonic acid and the reacted mixture within the reaction vessel; allowing the first carbonic acid and reacted mixture to settle within the reaction vessel; anddraining a first aqueous layer from the reaction vessel.2. The method of claim 1 , further comprising filtering the first aqueous layer using a size exclusion filtration system claim 1 ,wherein optionally the filtering step further comprises a filter having a membrane having a plurality of pores, said pores allowing soaps and phosphates to pass through said membrane of said filter,and optionally the filtering step further comprises a filter having a membrane, said membrane allowing particles having a molecular weight less than the molecular weight of a salt,and optionally the filtering step further comprises ...

WATER TREATMENT DEVICE, AND METHOD OF OPERATING WATER TREATMENT DEVICE

A water treatment device () includes a primary unit (U) having a plurality of primary elements (E) as reverse osmosis membrane devices disposed in parallel to each other to separate water to be treated (SW) into primary condensed water (CW) and fresh water (FW); a pump (P) which feeds the water to be treated (SW) to the primary unit (U); a secondary unit (U) having secondary elements (E) as reverse osmosis membrane devices, the secondary elements (E) being provided in smaller number than the primary elements (E) and disposed in parallel to each other to separate the primary condensed water (W) into secondary condensed water (CW) and fresh water (FW); and a switching unit () provided only in the secondary unit (U) among the primary unit (U) and the secondary unit (U) to separate at least one of the plurality of secondary elements (E) so that treatment is disabled. 1. A water treatment device comprising:a primary unit having a plurality of primary elements as reverse osmosis membrane devices disposed in parallel to each other to separate water to be treated into primary condensed water and fresh water;a pump which feeds the water to be treated to the primary unit;a secondary unit having secondary elements as reverse osmosis membrane devices, the secondary elements being provided in smaller number than the primary elements and disposed in parallel to each other to separate the primary condensed water into secondary condensed water and fresh water; anda switching unit provided only in the secondary unit among the primary unit and the secondary unit to separate at least one of the plurality of secondary elements so that treatment is disabled.2. The water treatment device according to claim 1 , wherein at least one of the secondary elements includes:an introduction line which guides the primary condensed water supplied from the primary unit to the secondary element,a secondary condensed water line through which the secondary condensed water separated from the primary ...

Water treatment process using pyrophylite ceramic membrane

The present invention relates to water treatment process using pyrophylite ceramic membrane which purifies contaminant from wastewater by applying the pyrophylite ceramic membrane with immersion type, more particularly, in the water treatment process using the pyrophylite ceramic membrane including pyrophylite with 80 weight and alumina with 20 weight, characterized that comprises a S-1 step which pyrophylite ceramic membrane 10 is embedded and raw water is supplied to a reactor 100 blocked from outside, a S-2 step which obtains permenate water by operating suction pump 130 connected with the pyrophylite ceramic membrane 10 , a S-3 step which recovers gas generated from the reactor 100 and a S-4 step which circulates part of gas generated from the reactor 100 to the reactor 100.

PROCESS FOR CONDITIONING AND REUSING SALT-CONTAINING PROCESS WATER

The invention relates to an integrated process for conditioning process water () from the production (I) of polycarbonate, which process water contains at least catalyst residues and/or organic impurities and sodium chloride, and subsequently utilizing the process water () in a subsequent sodium chloride electrolysis (V). 118.-. (canceled)19. An integrated process for workup of process water containing at least catalyst residue and/or organic impurities and sodium chloride from the production of polycarbonate , in particular of diaryl carbonates or of polycarbonate by the solution polymerization process , and subsequent processing of the process water in a downstream sodium chloride electrolysis , comprising at least the steps of:a) production of phosgene by reaction of chlorine with carbon monoxide,then eitherb1) reaction of the phosgene formed in step a) with at least one bisphenol in the presence of sodium hydroxide solution and optionally catalyst to afford a polycarbonate as the target product and a sodium chloride-containing aqueous solution,or isolation/separation of the polycarbonate and the monophenol,', 'reaction of the monophenol in the presence of sodium hydroxide solution and of catalyst with phosgene from step a) and separation of the products aqueous sodium chloride solution, polycarbonate as the target product and diaryl carbonate, wherein the diaryl carbonate is preferably reused in the initial transesterification,, 'b2) transesterification of one or more bisphenols with one or more diaryl carbonates to afford the oligo/polycarbonate and the monophenol,'}c) separation of the aqueous sodium chloride-containing solution obtained in step b1) or b2) from solvent residues and/or optionally catalyst residues, in particular by stripping the solution with steam, then adjustment of the prepurified solution to a pH of not more than 8 and subsequent purification (II) of the prepurified NaCl solution with adsorbents, in particular with activated carbon,d) ...

Ozone generator for water purification system

A water purification system that generates ozone and passes the ozone through stored purified water to reduce the growth and/or presence of bacteria, organisms, and/or other undesirable components in purified water.

METHOD FOR PURIFYING HIGH MOLECULAR WEIGHT ADENOSINE-BASED COENZYMES BY TANGENTIAL DIAFILTRATION

The present disclosure relates to the field of making high molecular weight adenosine-based coenzymes available on a large scale. In particular, it relates to a method for purifying high molecular weight adenosine-based coenzymes by implementing a tangential diafiltration, or even dia-ultrafiltration step. This method is, for example, applicable to the purification of coenzyme A disulfide ((CoAS)), coenzyme A (CoA), nicotinarnide adenine dinucleotide (NAD+), nicotinarnide adenine dinucleotide phosphate (NADP) or flavin adenine dinucleotide (FAD). 1. A method for purifying a high molecular weight adenosine-based coenzyme comprising implementing a tangential diafiltration of a solution comprising the high molecular weight adenosine-based coenzyme.2. The method of claim 1 , wherein the solution comprises an aqueous washing solution or any other aqueous buffer solution.3. The method of claim 2 , wherein the solution comprises deionized water.4. The method of claim 3 , wherein the diafiltration is a tangential dia-ultrafiltration.5. The method of claim 4 , wherein the high molecular weight adenosine-based coenzyme is coenzyme A disulfide ((CoAS)) claim 4 , coenzyme A (CoA) or a derivative thereof claim 4 , or nicotinamide adenine dinucleotide phosphate (NADP).7. The method of claim 6 , wherein the tangential diafiltration involves separating a permeate from a retentate using a membrane comprising a polyethersulfone (PES) polymer or a membrane comprising a modified polyamide polymer.8. The method of claim 7 , further comprising applying a pressure to the solution adjacent the membrane during the diafiltration claim 7 , the pressure being between 4 and 20 bar.9. The method of claim 1 , wherein the diafiltration is a tangential dia-ultrafiltration.10. The method of claim 1 , wherein the high molecular weight adenosine-based coenzyme is coenzyme A disulfide ((CoAS)) claim 1 , coenzyme A (CoA) or a derivative thereof claim 1 , or nicotinamide adenine dinucleotide phosphate ( ...

METHOD AND APPARATUS FOR HIGH WATER EFFICIENCY MEMBRANE FILTRATION TREATING HARD WATER

A method for the treatment of water using reverse osmosis (RO) membranes and nano-filtration membranes wherein the permeate of the membranes is fluid connected to a feed water source via a pressurized storage buffer tank as well as to the fluid connection to use, the method comprising the steps of supplying treated water through a sanitary fully pressurized buffer tank, and supplying waste water through a recirc loop which contains recirculated concentrate and storing treated water in the buffer tank with low total dissolved solids of less than 10% of feed water, low pH of less than pH 7, and of low total organic carbon of less than 25% of feed water ensuring sanitary storage. It further includes opening a waste valve in the recirc loop which purges recirculated concentrate in order to rapidly reduce the conductivity of the water in the recirc loop. It further includes the steps of operating the waste valve such that it maintains the conductivity of the recirculated waste water in the recirc loop within a pre selected range of values and opening the waste valve when a measured conductivity setpoint is exceeded, and closing the waste valve when a measured conductivity setpoint is met. 1. A method for the treatment of water using reverse osmosis (RO) membranes and nano-filtration membranes wherein the permeate of the membranes is fluid connected to a feed water source via a pressurized storage buffer tank as well as to the fluid connection to use , the method comprising the steps;a) supplying treated water through a sanitary fully pressurized buffer tank, and supplying waste water through a recirc loop which contains recirculated concentrate;b) storing treated water in the buffer tank with low total dissolved solids of less than 10% of feed water, low pH of less than pH 7, and of low total organic carbon of less than 25% of feed water ensuring sanitary storage;c) opening a waste valve in the recirc loop which purges recirculated concentrate in order to rapidly reduce ...

METHOD FOR MANUFACTURING LITHIUM HYDROXIDE AND LITHIUM CARBONATE, AND DEVICE THEREFOR

The present invention relates to a method for manufacturing lithium hydroxide and lithium carbonate, and a device therefor. The present invention provides a method for manufacturing lithium hydroxide, comprising: a step of dissolving lithium phosphate in an acid; a step of preparing a monovalent ion selective-type electrodialysis device disposed in the order of a cathode cell containing a cathode separator, a monovalent anion selective-type dialysis membrane for selectively permeating a monovalent anion, a monovalent cation selective-type dialysis membrane for selectively permeating a monovalent cation, and an anode cell containing an anode separator, injecting the lithium phosphate dissolved in the acid between the anode separator of the anode cell and the monovalent cation selective-type dialysis membrane, and between the cathode separator of the cathode cell and the monovalent anion selective-type dialysis membrane, respectively, and injecting water between the monovalent cation selective-type dialysis membrane and the monovalent anion selective-type dialysis membrane; a step of obtaining an aqueous lithium chloride solution, and at the same time, obtaining a phosphoric acid aqueous solution formed as a byproduct, by applying an electric current to the monovalent ion selective-type electrodialysis device; and a step of converting the obtained aqueous lithium chloride solution into an aqueous lithium hydroxide solution. 1. A method for manufacturing lithium hydroxide , comprisinga step of dissolving lithium phosphate in an acid;a step of preparing a monovalent ion selective-type electrodialysis device disposed in the order of a cathode cell containing a cathode separator, a monovalent anion selective-type dialysis membrane for selectively permeating a monovalent anion, a monovalent cation selective-type dialysis membrane for selectively permeating a monovalent cation, and an anode cell containing an anode separator, injecting the lithium phosphate dissolved in the ...

SYSTEM AND METHOD FOR CLEANING MEMBRANE FILTERS IN-LINE IN A WATER PURIFICATION SYSTEM

A process and system for cleaning semipermeable membranes is described that is particularly well suited for cleaning membranes contained in a water purification system, such as a reverse osmosis process. In order to clean the filter membranes, the membranes are placed in a cleaning chamber capable of allowing a reduction in pressure. In one embodiment, for instance, the membranes are contained in a filter housing and the filter housing is converted into a cleaning chamber by sealing off at least one end. The membranes are then submerged in a cleaning fluid and the pressure within the cleaning chamber is reduced causing the cleaning fluid to form bubbles. The process and system of the present disclosure is well suited to cleaning filter membranes, particularly ceramic membranes, in-line without having to remove the membranes from the water purification system. 1. A method for purifying water comprising:forcing a flow of water through at least one filter bank to form a purified water stream and a reject water stream, the filter bank comprising at least one membrane; andperiodically cleaning the membrane in-line, the membrane being cleaned by subjecting the membrane to a liquid in an atmosphere that is below a vapor pressure of the liquid.2. A method as defined in claim 1 , wherein the at least one membrane comprises a ceramic membrane.3. A method as defined in claim 1 , wherein the flow of water is purified through reverse osmosis by being forced through the at least one filter bank.4. A method as defined in claim 1 , wherein claim 1 , during cleaning claim 1 , the membrane is submersed in the liquid and wherein the pressure of the atmosphere surrounding the membrane is lowered below the vapor pressure of the liquid by evacuating gases from the atmosphere.5. A method as defined in claim 4 , wherein a surface of the membrane creates nucleation sites for bubble formation of the liquid when the pressure is lowered.6. A method as defined in claim 1 , wherein the liquid ...

Amine-containing water concentration system and apparatus, and carbon dioxide recovery system

According to one embodiment, an amine-containing water concentration system includes an osmotic pressure generator and a carbon dioxide introducing unit. The osmotic pressure generator includes a treatment vessel, a first chamber to which the water to be treated is supplied, a second chamber capable of storing a working medium, and a semipermeable membrane that partitions the first chamber and the second chamber, which are located in the treatment vessel. The carbon dioxide introducing unit is capable of introducing carbon dioxide into the water to be treated.

ULTRAPURE-WATER PRODUCTION SYSTEM

The ultrapure-water production system includes an auxiliary treatment apparatus and a dead-end filtration apparatus. The auxiliary treatment apparatus treats water such that the number of microparticles present in water treated by the auxiliary treatment apparatus is 800 to 1200 particles/mL. The dead-end filtration apparatus includes a filtration membrane that is a microfiltration membrane having pores formed in the surface of the membrane at an opening ratio of 50% to 90% with a size of 0.05 to 1 μm, and having a thickness of 0.1 to 1 mm, or an ultrafiltration membrane having pores formed in the surface of the membrane with a size of 0.005 to 0.05 μm, the number of the pores being 1E13 to 1E15 pores/m, the ultrafiltration membrane having a thickness of 0.1 to 1 mm and a transmembrane pressure of 0.02 to 0.10 MPa at a permeation flux of 10 m/m/d. 1. An ultrapure-water production system comprising an auxiliary treatment apparatus and a dead-end filtration apparatus that treats water treated by the auxiliary treatment apparatus ,the auxiliary treatment apparatus treating water such that the number of microparticles present in water treated by the auxiliary treatment apparatus is 800 to 1200 particles/mL (particle size: 20 nm or more), the number of microparticles being measured by a 60-minute moving average method with an online particle monitor Ultra-DI20 produced by Particle Measuring Systems capable of measuring microparticles having a size of 20 nm with a detection sensitivity of 5% and a measurement error of ±20%, the online particle monitor receiving the water treated by the auxiliary treatment apparatus through a sampling cock disposed on a main pipe,{'sup': 2', '3', '2, 'the dead-end filtration apparatus including a filtration membrane, the filtration membrane being a microfiltration membrane having pores with a size of 0.05 to 1 μm, the pores being formed in the surface of the membrane at an opening ratio of 50% to 90%, the microfiltration membrane having a ...

PROCESS FOR RECOVERING WATER, METAL AND ORGANICS FROM THE PRODUCTION OF POLYCARBOXYLIC ACID

In a process for recovering water, metals, soluble organics and insoluble organics from a process for the production of a polycarboxylic acid, the stream is cooled to a temperature at which dissolved organics precipitate. The precipitate organics are separated from a liquid stream and recycled to the production process. The liquid stream is then treated with an alkali to convert remaining organics to the alkali salt form and the metals present to be converted to an insoluble form. The insoluble metals are recovered from a liquid stream and this liquid stream, with the alkali salts of the organics, is passed to a membrane separation unit where it is separated into a permeate comprising water and a retentate comprising water and alkali organic salts. The permeate is recovered and recycled to the production process. The retentate also is recovered. 1. A process for recovering water , metals , soluble organics and insoluble organics in a mother liquor stream from the separation stage of a process for the production of a polycarboxylic acid , wherein the recovering process comprises:(a) cooling the stream to a temperature at which dissolved organics precipitate;(b) separating the precipitated organics from a liquid stream and recycling said organics to the process for the production of the polycarboxylic acid;(c) treating the liquid stream from step (b) with an alkali to convert remaining organics to the alkali salt form and the metals present to be converted to an insoluble form;(d) recovering the insoluble metals from a liquid stream;(e) passing the liquid stream from step (d) comprising the alkali salts of the organics to a membrane separation unit where it is separated into a permeate comprising water and a retentate comprising water and alkali organic salts;(f) recovering the permeate and recycling same to the process for the production of the polycarboxylic acid; and(g) recovering the retentate.2. The process according to where in the cooling of the feed stream in ...

PREPARATION OF SOY PROTEIN PRODUCTS ("S810")

The present invention is directed to soy protein products, very low in, or free of, beany flavour notes and useful for the fortification of food and beverage products and prepared without the use of salt in the process. The soy protein products of the present invention are obtained by extracting soy protein source with water to form an aqueous soy protein solution, at least partially separating the aqueous soy protein solution from residual soy protein source, adjusting the pH of the aqueous soy protein solution to a pH of about 1.5 to about 3.6 to solubilize at least a portion of the protein and form an acidified soy protein solution then separating the acidified soy protein solution from the acid insoluble solid material. The acidified soy protein solution may be dried following optional concentration and diafiltration to form a soy protein product, which may be an isolate. The acid insoluble solid material may be washed with acidified water and then dried to form another soy protein product. These products may be dried at the acidic pH at which they were prepared or may be adjusted in pH before drying.

DESULFURIZATION TECHNIQUES

A desulfurization system has an oxidation process unit, and a multi-stage, liquid-liquid extraction unit in series with the oxidation process unit. The multi-stage, liquid-liquid extraction unit spits a fuel input from the oxidation process unit into a desulfurized fuel that is output for use, and a by-product. A solvent/sulfur/hydrocarbon separation process unit receives the by-product from the multi-stage, liquid-liquid extraction unit. 1. A desulfurization system comprising:an oxidation process unit that outputs a fuel, the fuel comprising an oxidized fuel having sulfur therein; and a mixer; and', 'a separation vessel coupled to the mixer;', the mixer mixes the oxidized fuel with an extraction fluid, and the output of the mixer is fed to the separation vessel;', 'the separation vessel performs phase separation to separate the mixed oxidized fuel and extraction fluid into a reduced sulfur fuel and a residual, where the residual is comprised of the extraction fluid and sulfur transferred from the fuel; and', 'the reduced sulfur fuel exits the separation vessel at a first output and the residual exits the separation vessel at a second output., 'wherein], 'a liquid-liquid extraction unit coupled to the oxidation process unit, the liquid-liquid extraction unit comprising at least one liquid-liquid extraction stage, each liquid-liquid extraction stage having2. The desulfurization system of claim 1 , wherein:an input of the oxidation process unit mixes the a high sulfur fuel with an oxidant; andthe oxidation process unit comprises a reactor that contains a solid catalyst that does not require activation, does not deactivate with use, or a combination thereof.3. The desulfurization system of claim 1 , wherein:the oxidation process unit comprises a reactor, a cobalt oxide catalyst, or both.4. The desulfurization system of further comprising for at least one stage:a pump upstream of the mixer, wherein the oxidized fuel is merged with the extraction fluid to form a combined ...

WATER PRODUCTION METHOD

The present invention relates to a fresh water generation method including: feeding raw water or pretreated water thereof as feed water into a semipermeable membrane module in a pressurized state using a booster pump, thereby separating the feed water into a concentrate and a permeate having a low concentration, in which a scale inhibitor having a reducing function is dosed intermittently or continuously upstream from the semipermeable membrane module, thereby inhibiting scale generation and maintaining an oxidation-reduction potential of at least either the feed water or the concentrate to a threshold value or lower.

METHOD OF PREDICTING MEMBRANE FOULING IN REVERSE OSMOSIS PROCESS

A method of predicting membrane fouling in a reverse osmosis process includes collecting information relative to the reverse osmosis process being performed over a predetermined period of time, the collected information including a process factor and a water quality factor, the process factor including a produced water flow rate; calculating a salt removal rate and a pressure drop based on the collected information; normalizing the produced water flow rate, the salt removal rate, and the pressure drop; generating a prediction equation using normalized values of the produced water flow rate, the salt removal rate, and the pressure drop values; and predicting membrane fouling through the generated prediction equation to determine a chemical cleaning time. Process and water quality factors are normalized to temperature and/or flow rate, and the prediction equation uses the normalized factors. Both short-term and long-term predictions are made for chemical cleaning time and membrane module replacement time. 1. A method of predicting membrane fouling in a reverse osmosis process , the method comprising:collecting information relative to the reverse osmosis process being performed over a predetermined period of time, the collected information including a process factor and a water quality factor, the process factor including a produced water flow rate;calculating a salt removal rate and a pressure drop based on the collected information;normalizing the produced water flow rate, the salt removal rate, and the pressure drop;generating a prediction equation using normalized values of the produced water flow rate, the salt removal rate, and the pressure drop values; andpredicting membrane fouling through the generated prediction equation to determine a chemical cleaning time.2. The method of claim 1 , wherein the produced water flow rate claim 1 , the salt removal rate claim 1 , and the pressure drop are normalized for at least one of a temperature and a flow rate.3. The ...

Method of producing sugar liquid

A method of producing a sugar liquid includes: (A) reacting mannanase with a liquid component obtained by hydrolysis treatment of woody biomass to obtain a saccharified liquid; and (B) filtering the saccharified liquid in Step (A) through a microfiltration membrane and/or ultrafiltration membrane to collect a sugar liquid from a permeate side.

TWO-STAGE HYDROFORMYLATION PROCESS WITH CIRCULATING GAS AND SILP TECHNOLOGY

The invention relates to processes for preparing aldehydes by hydroformylation of alkenes, in which an alkene-containing feed mixture is subjected to a primary hydroformylation with synthesis gas in the presence of a homogeneous catalyst system, the primary hydroformylation being effected in a primary reaction zone from which a cycle gas containing at least some of the products and unconverted reactants of the primary hydroformylation are drawn off continuously and partly condensed, with recycling of uncondensed components of the cycle gas into the primary reaction zone, and with distillative separation of condensed components of the cycle gas in an aldehyde removal stage to give an aldehyde-rich mixture and a low-aldehyde mixture. The problem that it addresses is that of developing the process such that it achieves high conversions and affords aldehyde in good product quality even in the case of a deteriorating raw material position. More particularly, a solution is to be found for making legacy oxo process plants capable of utilizing lower-value raw material sources. This problem is solved by separating the low-aldehyde mixture into a retentate and a permeate by means of a membrane separation unit in such a way that alkenes present in the low-aldehyde mixture become enriched in the permeate, while alkanes present in the low-aldehyde mixture become enriched in the retentate. The alkene-rich permeate is then transferred into a secondary reaction zone and subjected to a secondary hydroformylation therein with synthesis gas in the presence of an SILP catalyst system. The reaction product obtained from the secondary hydroformylation is recycled into the aldehyde removal stage. 1. Process for preparing aldehydes by hydroformylation of alkenes , in which an alkene-containing feed mixture is subjected to a primary hydroformylation with synthesis gas in the presence of a homogeneous catalyst system , the primary hydroformylation being effected in a primary reaction zone ...

MEMBRANE WATER TREATMENT FACTILITY AND METHOD INCORPORATING ADSORPTION ON AN ADSORBENT POWDERED MATERIAL AND MEANS FOR LIMITING THE ABRASION OF THE MEMBRANES

Method for treating water comprising: a step for putting said water into contact with an adsorbent powdery material in a concentration of 0.1 to 5 g/L in a membrane reactor containing at least one submerged filtration membrane; a step of filtration by submerged membrane of said water containing said adsorbent powdery material in said membrane reactor, said membrane being at least partly constituted by an organic material; characterized in that it includes steps aimed at limiting the abrasion of said at least one submerged membrane by said adsorbent powdery material, said steps consisting in: putting said water containing said adsorbent powdery material into contact, in said membrane reactor, with a particulate polymer material constituted by particles in a concentration of 1 g/L to 10 g/L, said particles having an average diameter of 1 mm to 5 mm and a density of 1.05 to 1.5; and stirring said mixture constituted by water, adsorbent powdery material and particulate polymer material within said membrane reactor containing said at least one filtration membrane. 115-. (canceled)16. A method for treating water comprising:directing the water into a membrane reactor having a submerged filtration membrane constituted by organic material and contacting the water in the membrane reactor with an adsorbent powdery material having a concentration of 0.1 to 5.0 g/L;filtering the water in the membrane reactor with the submerged filtration membrane; injecting a particulate polymer material into the membrane reactor wherein the particulate polymer material comprises particles in a concentration of 1 g/L to 10 g/L and wherein the particles have an average diameter of 1 mm to 5 mm and a density of 1.05 to 1.5; and', 'stirring the water, adsorbent powdery material and particulate polymer material within said membrane reactor that includes the submerged filtration membrane., 'limiting the abrasion of the submerged membrane by the adsorbent powdery material by17. The method of wherein ...

METHOD OF PREPARING OXALIC ACID

The present invention provides a method of preparing oxalic acid (HCO), the method at least comprising the steps of: (a) providing a metal formate (HCOM) containing stream, wherein the metal (M) of the metal formate (HCOM) is a monovalent metal selected from the group consisting of Li, Na, K, Cs, Rb and a mixture thereof; (b) heating the metal formate (HCOM) containing stream thereby obtaining a metal oxalate (MCO) containing stream; (c) subjecting the metal oxalate (MCO) containing stream to electrodialysis, thereby obtaining at least oxalic acid (MCO) and a metal hydroxide (MOH). 1. A method of preparing oxalic acid (HCO) , the method at least comprising the steps of:{'sub': 2', '2, '(a) providing a metal formate (HCOM) containing stream, wherein the metal (M) of the metal formate (HCOM) is a monovalent metal selected from the group consisting of Li, Na, K, Cs, Rb and a mixture thereof;'}{'sub': 2', '2', '2', '4, '(b) heating the metal formate (HCOM) containing stream thereby obtaining a metal oxalate (MCO) containing stream;'}{'sub': 2', '2', '4', '2', '2', '4, '(c) subjecting the metal oxalate (MCO) containing stream to electrodialysis, thereby obtaining at least oxalic acid (HCO) and a metal hydroxide (MOH).'}2. The method according to claim 1 , wherein the metal (M) of the metal formate (HCOM) is selected from the group consisting of K claim 1 , Cs claim 1 , Rb and a mixture thereof.3. The method according to claim 1 , wherein the metal formate (HCOM) is potassium formate (HCOK).4. The method according to claim 1 , wherein the metal formate (HCOM) has been obtained from a metal bicarbonate (MHCO).5. The method according to claim 4 , wherein the metal bicarbonate (MHCO) has been obtained from COand a metal hydroxide (MOH).6. The method according to claim 5 , wherein the metal hydroxide (MOH) obtained in step (c) is recycled for use in obtaining the metal bicarbonate (MHCO).7. The method according to claim 1 , wherein the metal oxalate (MCO) containing stream ...

PROCESS FOR REDUCING FORMALDEHYDE CONTENT FROM CATIONIC MELAMINE-FORMALDEHYDE RESIN SOLUTION

The present invention generally relates to a process for reducing formaldehyde content from cationic melamine-formaldehyde resin solution. Said process comprises the steps consisting of charging a starting solution to an ultrafiltration membrane system, separating said starting solution into a concentrate solution which mainly comprises cationic melamine-formaldehyde resin of high molecular weight, formaldehyde and water, and a permeate solution which mainly comprises cationic melamine-formaldehyde resin molecules of low molecular weight, formaldehyde, acid compounds and water and treating the permeate solution to reduce the free formaldehyde content of the permeate. 1. A process for reducing formaldehyde content from cationic melamine-formaldehyde resin solution , the process comprising the following steps:a) Charging a starting solution of a cationic melamine-formaldehyde resin to an ultrafiltration membrane system; 'i. a concentrate solution which mainly comprises cationic melamine-formaldehyde resin of high molecular weight, formaldehyde and water, and', 'b) Separating said starting solution intoii. a permeate solution which mainly comprises cationic melamine-formaldehyde resin molecules of low molecular weight, formaldehyde, acid compounds and water;c) Treating the permeate solution to reduce the free formaldehyde content of the permeate;d) Mixing the concentrate solution with treated permeate or with water.2. The process according to claim 1 , wherein the formaldehyde content of the starting solution is of between about 0.1% and 3.5% claim 1 , by weight based on the weight of the starting solution.3. The process according to claim 1 , wherein the viscosity of the starting solution is between 10 cP·s and 100 cP·s.4. The process according to claim 1 , wherein the solid content of the starting solution is between 10% and 20% claim 1 , by weight based on the weight of the starting solution.5. The process according to claim 1 , wherein the material of the ...

Microcrop-derived electrolyte drink, dried base powder, and milk, and methods for generating the same

The present disclosure relates, in some embodiments, to a method including demineralizing a protein liquor (i.e., a liquid portion of a lysed microcrop (e.g., Lemna ) that has been separated to generate the liquid portion and a solid portion and having a composition including a soluble microcrop protein and a Vitamin B12) to generate a demineralized protein liquor. According to some embodiments, demineralizing the protein liquor may include diafiltration, ultrafiltration, nanofiltration, reverse osmosis filtration, electrodialysis, and/or passing the protein liquor through an ion exchange resin (e.g., an anion exchange resin. a trialkyl ammonium salt having three methyl groups). In some embodiments, a method may further include concentrating a demineralized protein liquor to generate at least one of a milk base and an electrolyte drink.

薄膜分离装置

本申请涉及一种膜分离装置。根据本申请的分离装置，可以以高的选择性来分离要使用具有小的面积大小的分离膜分离的组分，并且因此可以显著地改善处理效率和经济效率；并且，根据使用该膜分离装置的用于生产可膨胀的聚苯乙烯的方法，可以以高的选择性来分离要使用具有小的面积大小的分离膜分离的组分——特别是挥发性有机化合物(VOC)，并且因此可以显著地改善处理效率和经济效率；并且，通过分离和回收VOC，显示出在防止由全球变暖引起的环境污染上的效果。

Method for treating aqueous solution containing hexavalent chromium

A titanium-dioxide photocatalyst that excels in both photocatalytic activity and solid-liquid separation performance is applied to water treatment to provide a method for treating an aqueous solution containing hexavalent chromium. This method is provided with the following steps: a step in which catalyst particles are added to the aforementioned aqueous solution; a step in which the aqueous solution is exposed to light having a wavelength of 200-400 nm while the catalyst particles are agitated within the aqueous solution, thereby reducing the hexavalent chromium; and a step in which the agitation is stopped and the catalyst particles are separated out from the aqueous solution via precipitation. The catalyst particles consist of titanium-dioxide particles and zeolite particles. The titanium-dioxide particles are adsorbed to the outer surfaces of the zeolite particles. The molar ratio of silica to alumina in the zeolite is greater than or equal to 10:1, and the concentration of the catalyst particles in the aqueous solution is 0.4-16 g/L.

Method for treating hexavalent chromium-containing aqueous solution

Provided is a method for treating a hexavalent chromium-containing aqueous solution by water treatment employing a titanium dioxide photocatalyst that is excellent in both photocatalytic activity and solid-liquid separation performance. The method according to the present disclosure includes the steps of: adding catalyst particles to the aqueous solution; reducing hexavalent chromium by irradiating the aqueous solution with light having a wavelength of 200 nanometers or more and 400 nanometers or less while stirring the catalyst particles in the aqueous solution; and stopping the stirring and separating the catalyst particles from the aqueous solution by sedimentation. Each catalyst particle is composed only of a titanium dioxide particle and a zeolite particle, the titanium dioxide particle is adsorbed on the outer surface of the zeolite particle, the zeolite particle has a silica/alumina molar ratio of 10 or more, and the catalyst particles are contained in the aqueous solution at a concentration of 0.4 grams/liter or more and 16 grams/liter or less.

Water treatment process using pyrophylite ceramic membrane

The present invention relates to a water treatment process using an agalmatolite ceramic membrane to purify pollutants of sewage or wastewater by applying the agalmatolite ceramic membrane in a submerged type and, more specifically, to a water treatment method using an agalmatolite ceramic membrane which includes 80 parts by weight of agalmatolite and 20 parts by weight of alumina. The water treatment method using an agalmatolite-containing ceramic membrane includes: an S-1 step of including an agalmatolite ceramic membrane (10) and supplying raw water to a reactor (100) blocked from the outside; an S-2 step of acquiring permeation water by operating a suction pump (130) communicated with the agalmatolite ceramic membrane (10); an S-3 step of collecting gas generated from the reactor (100); and an S-4 step of circulating a part of gas generated from the reactor (100) to the reactor (100).

Smelting method of metal oxide ore

Ozone generator for water purification system

A water purification system that generates ozone and passes the ozone through stored purified water to reduce the growth and/or presence of bacteria, organisms, and/or other undesirable components in purified water.

Method and device for sulphur compounds extraction in hydrocarbon flow

FIELD: technological processes. SUBSTANCE: present invention relates to sulphur compounds in hydrocarbon flow extracting method. Method involves supply of hydrocarbon flow containing sulphur compounds, into preliminary washing zone, containing ammonia, extraction of hydrocarbon flow subjected to preliminary washing from preliminary washing zone and supply of hydrocarbon flow subjected to preliminary washing into mass transfer zone for extraction of one or more thiol compounds from hydrocarbon flow subjected to preliminary washing. Said mass transfer zone includes hollow-fiber membrane contactor, and thiol compounds removal takes place through pores in pipes wall. EFFECT: said method enables to minimize number of equipment required for thiol compounds removal, and wherein liquefied petroleum gas or light naphtha have required characteristics. 11 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C10G 19/02 C10G 19/08 C10G 27/06 C10G 29/00 C01B 17/06 B01D 61/00 (13) 2 605 747 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2015112318/04, 28.08.2013 (24) Дата начала отсчета срока действия патента: 28.08.2013 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ТЕРТЕЛ Джонатан Эндрю (US), САТТАР Азиз (US), БОУЭН Трэвис К. (US), КСОМЕРИТАКИС Джордж К. (US) (43) Дата публикации заявки: 27.10.2016 Бюл. № 30 R U (73) Патентообладатель(и): ЮОП ЛЛК (US) 04.09.2012 US 13/602,530 (45) Опубликовано: 27.12.2016 Бюл. № 36 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 06.04.2015 2 6 0 5 7 4 7 (56) Список документов, цитированных в отчете о поиске: US 2012000827 A1, 05.01.2012. US 3956112 A, 11.05.1976. US 2008308503 A1, 18.12.2008. RU 2352610 C2, 20.04.2009. SU 1075982 A3, 23.02.1984. (86) Заявка PCT: 2 6 0 5 7 4 7 R U C 2 C 2 US 2013/057008 (28.08.2013) (87) Публикация заявки PCT: WO 2014/039350 (13.03.2014) Адрес для переписки: 109012, ...

For the device and method of solute rapid concentration in water

本发明属于水处理技术领域，尤其涉及用于把水中溶质快速浓缩的装置及方法，是通过膜分离法得到一定浓缩倍数的水的处理方法及其装置。本发明装置包括压力水箱；压力水箱通过管路与动力源相连接，动力源的另一端通过管路与原水箱相连接；动力源的连接管路上设有调节压力和流量的回流阀门，回流阀门另一端的连接管路与原水箱连接；原水箱内设有加热器，加热器的另一端连接温控器；压力水箱内设有搅拌器，搅拌器的一端连接搅拌电机；压力水箱上部设有排气阀和取样阀；压力水箱的内壁设有反渗透分离膜，压力水箱的内壁上还设有能够透水的微孔。本发明具有结构简单，设计合理，操作安全可靠的优点。可以快速浓缩水中溶质，并且使工作效率得到显著提高。

Method for reprocessing and reuse of process water containing salt

Es wird ein integriertes Verfahren zur Aufbereitung von mindestens Katalysatorrest und/oder organische Verunreinigungen und Kochsalz enthaltendem Prozesswasser (1) aus der Produktion (I) von Polycarbonat und anschließende Verarbeitung des Prozesswassers (1) in einer nachgeschalteten Natriumchlorid-Elektrolyse (V) beschrieben. An integrated process for the treatment of at least catalyst residue and / or organic impurities and process water (1) containing common salt from the production (I) of polycarbonate and subsequent processing of the process water (1) in a downstream sodium chloride electrolysis (V) is described.

Process for conditioning and reusing salt-containing process water

The invention relates to an integrated process for conditioning process water (1) from the production (I) of polycarbonate, which process water contains at least catalyst residues and/or organic impurities and sodium chloride, and subsequently utilizing the process water (1) in a subsequent sodium chloride electrolysis (V).

Patent RU2017109727A3

7 ВУ” 2017109727” АЗ Дата публикации: 02.08.2019 Форма № 18 ИЗ,ПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 20171097277/10(017063) 27.08.2015 РСТ/СА2015/050819 27.08.2015 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 62/042,425 27.08.2014 05 Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) ПОЛУЧЕНИЕ СОЕВЫХ БЕЛКОВЫХ ПРОДУКТОВ ("5810") Заявитель: БАРКОН НЬЮТРАСАЙНС (МБ) КОРП., СА 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. п см. Примечания [ ] приняты во внимание следующие пункты: р [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) А23.] 3/16 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): Е-Габгагу, Езрасепе, Разеагсв, РАТЕМТСОРЕ, КОРТО, МСВТ, ЕМВГ-ЕВ1, Соозе, Соозе эсБо][аг, РиИБМеа, ОЗРТО, Заепсе еси 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория* относящихся ...

System and method for cleaning membrane filters in-line in a water purification system

A process and system for cleaning semipermeable membranes is described that is particularly well suited for cleaning membranes contained in a water purification system, such as a reverse osmosis process. In order to clean the filter membranes, the membranes are placed in a cleaning chamber capable of allowing a reduction in pressure. In one embodiment, for instance, the membranes are contained in a filter housing and the filter housing is converted into a cleaning chamber by sealing off at least one end. The membranes are then submerged in a cleaning fluid and the pressure within the cleaning chamber is reduced causing the cleaning fluid to form bubbles. The process and system of the present disclosure is well suited to cleaning filter membranes, particularly ceramic membranes, in-line without having to remove the membranes from the water purification system.

OBTAINING SOY PROTEIN PRODUCTS ("S810")

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2020 127 891 A (51) МПК A23J 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2020127891, 21.08.2020 (71) Заявитель(и): БАРКОН НЬЮТРАСАЙНС (МБ) КОРП. (CA) Приоритет(ы): (30) Конвенционный приоритет: 27.08.2014 US 62/042,425 Адрес для переписки: 101000, Москва, ул. Мясницкая, 13, стр. 5, ООО "Союзпатент", С.Б. Фелициной Стр.: 1 A 2 0 2 0 1 2 7 8 9 1 R U A (57) Формула изобретения 1. Соевый белковый продукт, имеющий содержание белка, по меньшей мере, 60 мас.% (N×6.25) на сухую основу, и который: получают без использования кальциевой или другой соли в экстракции соевого белка из источника соевого белка, получают в отсутствие стадии способа, включающей в себя осаждение белка при уровне pH от 4,0 до 5,0 и имеет слабые бобовые вкусоароматические свойства или не обладает ими. 2. Соевый белковый продукт по п. 1, который включает в себя, по меньшей мере, один из следующих параметров: не требует ферментов при его получении; содержание фитиновой кислоты больше 1,5 мас.% на сухую основу; содержание соевого белка, по меньшей мере, 90 мас.% (N×6,25) в расчёте на сухую основу; и низкая активность ингибиторов трипсина. 3. Соевый белковый продукт, имеющий содержание белка, по меньшей мере, 60 мас.% (N×6.25) в расчёте на сухую основу, который (a) характеризуется растворимостью белка при концентрации 1% мас./об. белка в воде и уровне pH 2, составляющей от 45 до 65%; растворимостью при концентрации 1% мас./об. белка в воде и уровне pH 3, составляющей от 41 до 65%; растворимостью белка при концентрации 1% мас./об. белка в воде и уровне pH 4, составляющей меньше 35%; и растворимостью белка при концентрации 1% мас./об. белка в воде и уровне pH 5, составляющей меньше 27%; растворимостью белка при концентрации 1% масс./об. белка в воде и уровне pH 6, составляющей от 31% до 55%; и растворимостью белка при концентрации 1% мас./об. белка в воде и уровне pH 7, составляющей от 36% до 65%; или ( ...

Micro-channel permeation gasification device and method for synthesizing pyrrolidone alkali metal salt

本发明公开了一种微通道渗透气化装置，包括一组或多组渗透气化组件单元；其中，每个所述渗透气化组件单元依次层叠的反应基板、渗透气化膜和气化基板。本发明还公开了用所述装置进行合成吡咯烷酮碱金属盐的方法。

Novel composite nanofiltration membrane modified by ionic liquid and preparation method and application thereof

本发明涉及一种采用离子液体修饰的新型复合纳滤膜及其制备方法与应用，属于分离膜复合材料技术领域。本发明所述的新型复合纳滤膜制备方法包括以下步骤，首先将钛源和咪唑类离子液体溶于溶剂，反应完成后，冷冻干燥，得到钛羟基改性的咪唑类离子液体；所述钛源、咪唑类离子液体的摩尔比为1：0.5‑1.5。然后将水相单体溶于所述的钛羟基改性的咪唑类离子液体，反应得到水相溶液。最后将底膜浸泡于所述的水相溶液中，再将底膜浸泡于油相溶液中进行反应形成交联层，取出烘干，得到所述新型复合纳滤膜。本发明所述的新型复合纳滤膜可应用于高盐废水零排放处理中，具有较高的盐离子截留率和水渗透通量。

Ultrapure water production apparatus

本发明提供一种可稳定地制造微粒经高度去除的高水质的超纯水的超纯水制造装置。本发明的超纯水制造装置，其具有从一次纯水制造超纯水的次系统，在该次系统的最终段中设置有膜装置，其特征在于，该膜装置是以串联的方式设置有多段，并且，第1段的膜装置为UF膜装置、MF膜装置或RO膜装置，最终段的膜装置为UF膜装置或未经离子交换基修饰的MF膜装置。

Production of soya protein products ("s810")

FIELD: food industry. SUBSTANCE: method of producing a soya protein product with protein content of at least 60 wt % and at least 90 wt % (N x 6.25) in terms of dry weight, in which calcium salt is not used, is carried out as follows. Soya bean protein source is subjected to extraction treatment to determine soluble soya protein conversion from protein source and formation of water solution of soya protein, where the extraction pH is 6–11. At least, partially, water solution of soya protein is separated from residual source of soya protein. PH of the aqueous solution of soya protein is brought to pH of 1.5 to 3.6 to produce an acidified soya protein solution and an acid-insoluble solid. Insoluble in the acid solid material is separated from the acidified soya protein solution. If necessary, acidified solution of soya protein is concentrated by means of selective membrane technology, diafiltered and dried. EFFECT: invention ensures production of a product with very weak legume taste-and-flavor shades without use of calcium salt or another salt in the method. 8 cl, 1 dwg, 11 tbl, 11 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 733 129 C2 (51) МПК A23J 3/16 (2006.01) A23J 1/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК A23J 3/16 (2020.05); A23J 1/14 (2020.05) (21)(22) Заявка: 2017109727, 27.08.2015 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): БАРКОН НЬЮТРАСАЙНС (МБ) КОРП. (CA) 29.09.2020 27.08.2014 US 62/042,425 (43) Дата публикации заявки: 27.09.2018 Бюл. № 27 (45) Опубликовано: 29.09.2020 Бюл. № 28 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.03.2017 (56) Список документов, цитированных в отчете о поиске: US 2007065567 A1, 22.03.2007. WO 2011000097 A1, 06.01.2011. БЕГЕУЛ0В М.Ш. Основы переработки семян сои. Москва: ДеЛи принт, 2006, с.17. МИКУЛ0ВИЧ Т.П. Растительный белок. Москва: Aгропромиздат, 1991, с.149-168. 2 7 3 3 1 2 9 Приоритет ...

PRODUCTION OF SOYA PROTEIN PRODUCTS ("S810")

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2017 109 727 A (51) МПК A23J 3/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2017109727, 27.08.2015 (71) Заявитель(и): БАРКОН НЬЮТРАСАЙНС (МБ) КОРП. (CA) Приоритет(ы): (30) Конвенционный приоритет: 27.08.2014 US 62/042,425 27 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.03.2017 CA 2015/050819 (27.08.2015) (87) Публикация заявки PCT: WO 2016/029314 (03.03.2016) A Адрес для переписки: 109012, Москва, ул. Ильинка, 5/2, ООО "Союзпатент" R U (57) Формула изобретения 1. Способ получения соевого белкового продукта, имеющего содержание белка, по меньшей мере, 60 мас. % и, по меньшей мере, 90 мас. %(N x 6.25) в пересчёте на сухую массу, характеризующийся тем, что: - подвергают экстракционной обработке водой источник соевого белка для обусловливания переведения в растворимую форму соевого белка из источника белка и образования водного раствора соевого белка, - по меньшей мере, частично отделяют водный раствор соевого белка от остаточного источника соевого белка, - доводят уровень pH водного раствора соевого белка до величины pH от 1,5 до 3,6, предпочтительно от 2,0 до 2,5, для получения подкисленного раствора соевого белка и нерастворимого в кислоте твёрдого материала, - отделяют нерастворимый в кислоте твёрдый материал от подкисленного раствора соевого белка, - необязательно, концентрируют подкисленный раствор соевого белка при помощи селективной мембранной технологии, - необязательно, подвергают диафильтрации, необязательно, концентрированный раствор соевого белка, и - необязательно, высушивают, необязательно, концентрированный и, необязательно, подвергнутый диафильтрации раствор соевого белка. Стр.: 1 A 2 0 1 7 1 0 9 7 2 7 (54) ПОЛУЧЕНИЕ СОЕВЫХ БЕЛКОВЫХ ПРОДУКТОВ ("S810") 2 0 1 7 1 0 9 7 2 7 (86) Заявка PCT: R U (43) Дата публикации заявки: 27.09.2018 Бюл. № (72) Автор(ы): ГРИН Брент И. (CA), СИГАЛЛ Кевин И. (CA), ШВАЙЦЕР Мартин (CA) A 2 0 1 7 1 0 9 ...

Method for producing hydrogen chloride or its aqueous solution by using untreated salt water and electrodialysis system

MEMBRANAR PROCESS FOR POTABILIZING SURFACE WATER WITHOUT ADDING SEQUESTRANT

Procédé de potabilisation d’eaux de surfaces visant à abattre leur teneur en matière en suspension, leur turbidité, leur teneur en matières organiques et leur couleur caractérisé en ce qu’il comprend : une étape de nanofiltration desdites eaux sur au moins une membrane spiralée de nanofiltration ayant un pouvoir de coupure compris entre 800 Da et 1000 Da, ladite étape de nanofiltration conduisant à l’obtention d’un perméat et d’un concentrat, dans lequel ladite étape de nanofiltration est mise en œuvre avec un taux de conversion supérieure à 95 %, ledit procédé étant mené en l’absence de toute étape d’ajout de produit anti-scalant et de toute étape de reminéralisation dudit perméat. Figure de l’abrégé : [Fig. 1] Surface water purification process aimed at reducing their suspended matter content, their turbidity, their organic matter content and their color, characterized in that it comprises: a nanofiltration step of said water on at least one spiral nanofiltration membrane having a breaking capacity of between 800 Da and 1000 Da, said nanofiltration step leading to the production of a permeate and a concentrate, wherein said nanofiltration step is implemented with a conversion rate greater than 95%, said process being carried out in the absence of any step of adding anti-scaling product and of any step of remineralizing said permeate. Abstract figure: [Fig. 1]

The preparation method and its device of lithium hydroxide and lithium carbonate

本发明涉及一种氢氧化锂和碳酸锂的制备方法及其装置，该氢氧化锂的制备方法包含以下步骤：将磷酸锂溶解于酸中；准备一价离子选择性电渗析装置，其按顺序配置有：阴极室，其具有阴极分离膜；一价阴离子选择性渗析膜，其使一价阴离子选择性透过；一价阳离子选择性渗析膜，其使一价阳离子选择性透过；以及阳极室，其具有阳极分离膜，将溶解于酸中的磷酸锂分别加入到阳极室的阳极分离膜和一价阳离子选择性渗析膜之间、及阴极室的阴极分离膜和一价阴离子选择性渗析膜之间，将水加入到一价阳离子选择性渗析膜和一价阴离子选择性渗析膜之间；向一价离子选择性电渗析装置施加电流，以获得氯化锂水溶液，同时获得所形成的副产物磷酸水溶液；以及将获得的氯化锂水溶液转换成氢氧化锂水溶液。

MEMBRANE PROCESS FOR POTABILIZING SURFACE WATER WITHOUT ADDING SEQUESTRANT

Procédé de potabilisation d’eaux de surfaces visant à abattre leur teneur en matière en suspension, leur turbidité, leur teneur en matières organiques et leur couleur caractérisé en ce qu’il comprend : une étape de nanofiltration desdites eaux sur au moins une membrane spiralée de nanofiltration ayant un pouvoir de coupure compris entre 800 Da et 1000 Da, ladite étape de nanofiltration conduisant à l’obtention d’un perméat et d’un concentrat, dans lequel ladite étape de nanofiltration est mise en œuvre avec un taux de conversion supérieure à 95 %, ledit procédé étant mené en l’absence de toute étape d’ajout de produit anti-scalant et de toute étape de reminéralisation dudit perméat. Figure de l’abrégé : [Fig. 1]

Process for conditioning and reusing salt-containing process water

The invention relates to an integrated process for conditioning process water (1) from the production (I) of polycarbonate, which process water contains at least catalyst residues and/or organic impurities and sodium chloride, and subsequently utilizing the process water (1) in a subsequent sodium chloride electrolysis (V).

Pfas treatment scheme using separation and electrochemical elimination

A system for treating a source of water contaminated with PF AS is disclosed. The system includes a PF AS separation stage having an inlet fluidly connectable to the source of water contaminated with PF AS, a diluate outlet, and a concentrate outlet and a PF AS elimination stage positioned downstream of the PFAS separation stage and having an inlet fluidly connected to an outlet of the PFAS separation stage, the elimination of the PFAS occurring onsite with respect to the source of water contaminated with PF AS, with the system maintaining an elimination rate of PFAS greater than about 99%. A method of treating water contaminated with PF AS is also disclosed.

Method for treating aqueous solution containing hexavalent chromium

本发明提供一种将光催化活性和固液分离性能两者均优异的二氧化钛光催化剂应用于水处理，对含六价铬的水溶液进行处理的方法。本发明的方法具备：将催化剂颗粒添加到上述水溶液中的工序；在水溶液中搅拌催化剂颗粒，同时对水溶液照射200纳米以上400纳米以下的波长的光，将六价铬还原的工序；和停止搅拌，使催化剂颗粒从水溶液沉降分离的工序。催化剂颗粒仅包含二氧化钛颗粒和沸石颗粒，二氧化钛颗粒吸附在沸石颗粒的外表面，沸石的二氧化硅/氧化铝的摩尔比为10以上，水溶液中含有的催化剂颗粒的浓度为0.4克/升以上16克/升以下。

The electric sorption controlled for the redox of purifying blood and other fluids and decomposer

本发明涉及一种用于从血液和其它流体中去除物质的装置，所述装置包含：i)用于从血液、血浆、超滤液或透析液流体中去除物质如毒素、有毒溶质、有毒的小分子和中等尺寸分子和与蛋白结合的毒素的电催化分解过滤器，所述电催化分解过滤器包含直流电源，一组具有催化表面或与提供催化活性的吸着剂直接接触的电极，ii)用于从血液、血浆、超滤液或透析液流体中去除物质如毒素、有毒溶质、有毒的小分子和中等尺寸分子和与蛋白结合的毒素的电吸着过滤器，所述电吸着过滤器包含直流电源、一组电极、纳米结构的吸着材料和/或多孔聚合物基质，iii)供血液或血浆或透析液流体进入所述装置中的进口，iv)用于从所述装置中去除经纯化的血液、血浆、超滤液或透析液流体的出口，和v)导管，其连接所述进口与所述出口并且保持所述电吸着过滤器，以使得所述血液、血浆、超滤液或透析液流体被强迫通过所述电吸着和电催化分解过滤器，以及vi)传感器和控制系统，以保护装置不产生氧化应激。本发明的装置也适用于其它流体如水、废水、化学品和其它生物流体的纯化。

Method for pickling steel sheets

本发明涉及用于酸洗钢板8的方法，将所述钢板持续浸在包含酸洗溶液10的酸洗浴1中，所述浴连接至包括再循环罐3、循环装置12和13的处理单元，将所述溶液的连续进入流11从再循环罐3进给到超滤装置2中并且两个流离开超滤装置，一个经过滤的离开流21然后进给回所述再循环罐3内、以及一个未经过滤的流22，所述处理单元不包括储存罐。

Process and apparatus for extracting sulfur compounds in a hydrocarbon stream

One exemplary embodiment can be a process for extracting sulfur compounds in a hydrocarbon stream. The process can include feeding a hydrocarbon stream containing sulfur compounds to a prewash zone containing an alkali, withdrawing a prewashed hydrocarbon stream from the prewash zone, and feeding the prewashed hydrocarbon stream to a mass transfer zone for extracting one or more thiol compounds from the prewashed hydrocarbon stream. Often, the mass transfer zone includes a hollow fiber membrane contactor.

Electrosorption and decomposition device for the purification of blood and other fluids

Method for manufacturing lithium hydroxide and lithium carbonate, and device therefor

The present invention relates to a method for manufacturing lithium hydroxide and lithium carbonate, and a device therefor. The present invention provides a method for manufacturing lithium hydroxide, comprising: a step of dissolving lithium phosphate in an acid; a step of preparing a monovalent ion selective-type electrodialysis device disposed in the order of a cathode cell containing a cathode separator, a monovalent anion selective-type dialysis membrane for selectively permeating a monovalent anion, a monovalent cation selective-type dialysis membrane for selectively permeating a monovalent cation, and an anode cell containing an anode separator, injecting the lithium phosphate dissolved in the acid between the anode separator of the anode cell and the monovalent cation selective-type dialysis membrane, and between the cathode separator of the cathode cell and the monovalent anion selective-type dialysis membrane, respectively, and injecting water between the monovalent cation selective-type dialysis membrane and the monovalent anion selective-type dialysis membrane; a step of obtaining an aqueous lithium chloride solution, and at the same time, obtaining a phosphoric acid aqueous solution formed as a byproduct, by applying an electric current to the monovalent ion selective-type electrodialysis device; and a step of converting the obtained aqueous lithium chloride solution into an aqueous lithium hydroxide solution.

Systems and methods of separating and isolating water and other desired constituents from oilfield produced brines for reuse

An integrated, membrane-based process to produce purified water and conversion of salt to high value chemicals from oil and gas well produced water is described. A liquid stream including water and dissolved salt is flowed through pretreatment units and one or more desalination and concentration units which remove at least a portion of the water to form a brine enriched in dissolved salt. The purified high-density brine may be subjected to electrically- enforced salt dissociation techniques to produce chemicals from oil and gas produced water.

Apparatus, systems, and methods for fluid filtration

The present disclosure relates, according to some embodiments, to apparatus, systems, and methods for reduction and/or removal of one or more contaminants (e.g., heavy metals, chromium, phosphorous, phosphorous compounds, nitrogen, nitrogen compounds) from a feed composition (e.g., a fluid). Apparatus, systems, and methods, in some embodiments, may be operable to decontaminate a fluid with comparatively little or no contaminant containing waste fluid.

Preparation method of taurine intermediate sodium taurate and preparation method of taurine

本发明提供一种牛磺酸中间体牛磺酸钠的制备方法，包括以下步骤：提供羟乙基磺酸钠和氨源；将所述羟乙基磺酸钠和所述氨源置于氨解反应器中进行氨解反应，得到含牛磺酸中间体牛磺酸钠的混合物，其中，所述氨源中的氨与所述羟乙基磺酸钠的摩尔比为25:1以上。本发明还提供一种牛磺酸的制备方法。

Method for manufacturing lithium hydroxide and lithium carbonate, and device therefor

The present invention relates to a method for manufacturing lithium hydroxide and lithium carbonate, and a device therefor. The present invention provides a method for manufacturing lithium hydroxide, comprising: a step of dissolving lithium phosphate in an acid; a step of preparing a monovalent ion selective-type electrodialysis device disposed in the order of a cathode cell containing a cathode separator, a monovalent anion selective-type dialysis membrane for selectively permeating a monovalent anion, a monovalent cation selective-type dialysis membrane for selectively permeating a monovalent cation, and an anode cell containing an anode separator, injecting the lithium phosphate dissolved in the acid between the anode separator of the anode cell and the monovalent cation selective-type dialysis membrane, and between the cathode separator of the cathode cell and the monovalent anion selective-type dialysis membrane, respectively, and injecting water between the monovalent cation selective-type dialysis membrane and the monovalent anion selective-type dialysis membrane; a step of obtaining an aqueous lithium chloride solution, and at the same time, obtaining a phosphoric acid aqueous solution formed as a byproduct, by applying an electric current to the monovalent ion selective-type electrodialysis device; and a step of converting the obtained aqueous lithium chloride solution into an aqueous lithium hydroxide solution.

Alkylated cyclodextrin compositions and processes for preparing and using the same

The present disclosure is related to processes for efficient large-scale preparation of alkylated cyclodextrins. The processes of the present disclosure provide high purity alkylated cyclodextrins with high purity and low levels of chloride while improving efficiency, increasing batch size, and reducing total process time.

Liquid zero discharge recirculation system for PCB manufacturing, general metal finishing and chemical milling

인쇄 회로 기판 제작(PCB FAB), 일반 금속 마무리(GMF), 반도체 제조, 화학적 밀링, 및 물리 기상 증착(PVD) 중 적어도 하나를 포함하는 제조 공정으로부터 발생된 폐기물을 처리하기 위한 방법 및 시스템이 제공된다. 상기 방법 및 시스템은 액체 무배출 재순환을 생성하는 데 사용된다.

Process for preparing guanidino acetic acid

The present invention pertains to a process for preparing guanidino acetic acid (GAA) from cyanamide and glycine in alkaline process solution, in which anionic impurities are removed from the process solution by electrodialysis.

Method and apparatus for producing lithium hydroxide and lithium carbonate

Improved dilute chemical reaction process with membrane separation step

本发明公开了一种用于进行环化反应、聚合反应、表现出底物抑制的酶促反应、表现出产物抑制的酶促反应、表现出底物或反应物沉淀的反应的方法，该方法包括以下步骤：a)用溶剂(S)稀释新鲜底物(X)以形成稀释的底物.溶剂混合物，并且将该混合物供应至反应器(2)，b)使反应介质在所述反应器中反应，c)将包含反应产物、溶剂和未反应底物的反应混合物排放至第一滤膜(6)，其对溶剂是可渗透的并且对底物和催化剂或至少一种反应物是不可渗透的，d)使溶剂从第一膜的渗透物侧(11)返回以稀释新鲜底物，以及e)使包含未反应底物的渗余物(10)从第一滤膜返回至反应器。

A process for purification of polyether block copolymers

Process for providing purified polyether block copolymers comprising polyoxyethylene (PEO) and polyoxypropylene (PPO) moieties wherein the purified product is obtained by an ultrafiltration step of a solution of the polyether block copolymers and wherein the block copolymers are depleted in lower molecular impurities.

Membrane water treatment facility and method incorporating adsorption on an adsorbent powdered material and means for limiting the abrasion of the membranes

本发明涉及水处理设备和方法，包括：使所述水与浓度为0.1‑5g/L的吸附性粉末状材料在包含至少一个浸没式过滤膜的膜反应器中接触的步骤；在所述膜反应器中通过浸没式膜过滤包含所述吸附性粉末状材料的所述水的步骤，所述膜至少部分地由有机材料构成；其特征在于该方法包括旨在限制所述至少一个浸没式膜被所述吸附性粉末状材料磨损的步骤，所述步骤在于：在所述膜反应器中使包含所述吸附性粉末状材料的所述水与浓度为1g/L‑10g/L的由颗粒构成的颗粒状聚合物材料接触的步骤，所述颗粒具有1mm‑5mm的平均直径和1.05‑1.5的密度；并且在包含所述至少一个过滤膜的所述膜反应器内搅拌由水、吸附性粉末状材料和颗粒状聚合物材料构成的所述混合物。

Membrane separation method and membrane separation device

Membrane-coupled advanced electro-oxidation method, water treatment apparatus therefor, and water treatment system using same

Provided in the present invention are a membrane-coupled advanced electro-oxidation method which simultaneously performs an electrode reaction and membrane filtration, a water treatment apparatus using the same, and a water treatment system using the same. The present invention comprises: a step of forming a separator electro-oxidation tank in which an electrode and a separator are combined; a contaminant receiving step of receiving contaminants in the separator electro-oxidation tank; and a water treatment step of supplying power to the electrode to decompose the contaminants and simultaneously separate particles using the separator, wherein the electrode is disposed on a lower side of the separator in the step of forming the separator electro-oxidation tank, and gas generated in the electrode causes a flow of fluid in the vertical direction in the water treatment step, thereby improving the contact efficiency between a reaction liquid and the electrode and removing the contaminants adhering to the surface of the separator. As such, the present invention has advantages in that as the steps of decomposing the contaminants using the electrode and separating the particles using the separator are performed at the same time, it is possible to effectively remove the contaminants, and in that as the electrode is positioned below the separator, the reactivity of electrolysis can be improved by the gas generated in the electrode and the filtration efficiency of the separator can be improved.

Method for pickling steel sheets

The invention relates to a method for pickling steel sheets 8, said steel sheets being continuously dipped in a pickling bath 1, containing a pickling solution 10, said bath being connected to a treatment unit including a recirculation tank 3, circulation means 12 and 13, a continuous entering flow 11 of said solution being fed into an ultrafiltration device 2 from the recirculation tank 3 and two flows exits the ultrafiltration device, one filtered exiting flow 21 being then fed back inside said recirculation tank 3 and one unfiltered flow 22, said treatment unit including no storage tank.

Method of using nanofiltration and reverse osmosis to remove chemical contaminants

A method of removing chemical contaminants from a composition comprising an active, a solvent, and a contaminant can include providing an initial feed supply, wherein the initial feed supply comprises the active, the solvent, and the contaminant, wherein the contaminant can include 1,4 dioxane, dimethyl dioxane, or a combination thereof; including filtering the initial feed stock through a nanofilter and using reverse osmosis.

Removal of ammonia from ammonia-containing water using an electrodialysis process

A process and system for removing ammonia from an aqueous ammonia solution. A first aqueous solution and the ammonia solution are flowed respectively through a first and a second separation chamber of a bipolar membrane electrodialysis ("BPMED") stack. The first separation chamber is bounded on an anodic side by a cation exchange membrane and the second separation chamber is bounded on a cathodic side by the cation exchange membrane and on an anodic side by a bipolar membrane. The bipolar membrane has an anion-permeable layer and a cation- permeable layer respectively oriented to face the stack's anode and cathode. While the solutions are flowing through the stack a voltage is applied across the stack that causes the bipolar membrane to dissociate water into protons and hydroxide ions. The protons migrate into the second separation chamber and react there with ammonia to form ammonium ions that migrate to the first separation chamber.

Membrane separating method

本发明提供在对被处理水进行膜分离处理时，可以降低被处理水中所含的膜污染物质在膜表面的吸附，降低膜分离性能的劣化的膜分离方法及膜分离装置。在被处理水中添加由在水中溶胀、实质上不溶解于水的阳离子性聚合物构成的粒子，对被处理水进行膜分离处理。

Hollow fiber membrane module and method of making and using same

A membrane module includes a housing. The housing includes a housing, comprising: a first plurality of porous hollow fiber membranes, and a second plurality of porous hollow fiber membranes different from the first plurality of porous hollow fiber membranes. The first plurality of porous hollow fiber membranes has a first length, and the second plurality of porous hollow fiber membranes has a second length that is at least 1.1 times greater than the first length. The membrane module can be used in separation methods, such as membrane distillation methods.

method for stripping steel sheets and equipment

A invenção refere-se a um método para decapagem de chapas de aço (8), as referidas chapas de aço sendo mergulhadas continuamente em um banho de decapagem (1), contendo uma solução de decapagem (10), o referido banho sendo conectado a uma unidade de tratamento incluindo um tanque de recirculação (3), meios de circulação (12) e (13), um fluxo de entrada contínuo (11) da referida solução sendo alimentado para um dispositivo de ultrafiltração (2) a partir do tanque de recirculação (3) e dois fluxos saem do dispositivo de ultrafiltração, um fluxo de saída filtrado (21) sendo então retornado para dentro do referido tanque de recirculação (3) e um fluxo não filtrado (22), referida unidade de tratamento incluindo nenhum tanque de armazenamento.

Membrane water treatment facility and method incorporating adsorption on an adsorbent powdered material and means for limiting the abrasion of the membranes

A water treatment facility and method comprising: a step of bringing said water into contact with an adsorbent powdered material at a concentration of between 0.1 and 5 g/L in a membrane reactor containing at least one submerged filtration membrane; a step of submerged membrane filtration of said water containing said adsorbent powdered material in said membrane reactor, said membrane consisting at least partly of an organic material; characterised in that it includes steps aiming to limit the abrasion of said at least one submerged membrane by said adsorbent powdered material, said steps consisting of: bringing said water containing said adsorbent powdered material into contact, in said membrane reactor, with a particulate polymer material consisting of particles at a concentration of between 1 g/L and 10 g/L, said particles having an average diameter of between 1 mm and 5 mm and a density of between 1.05 and 1.5; and stirring said mixture consisting of water, adsorbent powdered material and particulate polymer material in said membrane reactor containing said at least one filtration membrane.

Water treatment system and water treatment method

为了改善水处理系统的能量效率和进行稳定的温度控制，该水处理系统包括：多个装置(1，2，3，4)；多个管段(11，12)，水流过所述多个管段，并且所述多个管段将所述多个装置彼此连接；和热泵(21)，所述热泵从热量吸收管段(11)吸收热量和将从热量吸收管段(11)吸收的热量排出到热量排出管段(12)，至少一个管段(11)为所述热量吸收管段(11)，至少另一个管段(12)为所述热量排出管段。

Method and apparatus for treatment of associated water from a well

坑井から産出された、カルシウムイオンと溶解性シリカを含む随伴水から溶解性シリカを効率よく除去し、かつ、その後の逆浸透膜処理工程で逆浸透膜を閉塞させない方法と装置として、この随伴水にアルカリ性の条件下でマグネシウム塩を添加、混合して、不溶性のシリカと硫酸カルシウムを生成させるマグネシウム塩添加工程と、前記マグネシウム塩添加工程で得られた第１反応液を精密膜ろ過処理して、不溶化したシリカおよび硫酸カルシウムをろ過分離する精密膜ろ過処理工程と、前記精密膜ろ過処理工程で得られたろ過水に酸を添加、混合して、前記ろ過水のｐＨ値を５から９の範囲内、かつ、ランゲリア指数を負の範囲とする酸添加工程と、前記酸添加工程で得られた第２反応液を逆浸透膜処理して、淡水と膜濃縮水を得る逆浸透膜処理工程とを有する方法と装置を提供する。 As a method and apparatus for efficiently removing soluble silica from the associated water containing calcium ions and soluble silica produced from the well and not blocking the reverse osmosis membrane in the subsequent reverse osmosis membrane treatment step A magnesium salt is added to and mixed with water under alkaline conditions to form insoluble silica and calcium sulfate, and the first reaction solution obtained in the magnesium salt addition step is subjected to a precision membrane filtration treatment. Then, an acid is added to and mixed with the filtered water obtained by filtering the insolubilized silica and calcium sulfate by filtration, and the filtered water obtained by the precision membrane filtering process. In addition, an acid addition step in which the Langelia index is in a negative range, and a reverse osmosis membrane treatment of the second reaction solution obtained in the acid addition step to obtain fresh water and membrane concentrated water To provide a method and apparatus and a film processing step.