Method Of And A System For Combusting Fuel In An Oxyfuel Combustion Boiler

A method of and a system for combusting fuel in an oxyfuel combustion boiler. Fuel is fed to a furnace of the boiler. Oxidant gas that includes a mixture of substantially pure oxygen and recycled flue gas is fed to the furnace, prior to the feeding of the oxidant gas. At least a portion of the oxidant gas is preheated to generate preheated oxidant gas. The fuel is combusted with the oxidant gas in the furnace so as to generate steam and to produce the flue gas, and at least a portion of the steam is superheated to generate superheated steam. The preheating of the at least a portion of the oxidant gas is performed by using a heat exchanger that transfers heat from a portion of the superheated steam to the oxidant gas.

Combustion System Using Recycled Flue Gas to Boost Overfire Air

The present application and the resultant patent provide a combustion system. The combustion system may include a combustion chamber for combusting a flow of fuel and a flow of air to a flow of flue gases, an overfire air system in communication with the combustion chamber, and a flue gas return line in communication with the overfire air system such that a recycled flue gas flow mixes with an overtire air flow before entry into the combustion chamber.

Flue gas recycle system with fixed orifices

A system for providing combustion air and fuel gas to a premix burner includes a premix engine, a premix burner in fluid communication with an outlet of the premix engine, an exhaust flue, a flue gas recirculation line in fluid communication with the flue and an inlet of the premix engine, and a fresh air line in fluid communication with a source of fresh air and the inlet of the premix engine. A flue gas flow restrictor is installed in the flue gas recirculation line, and a fresh air flow restrictor is installed in the fresh air line. The flow restrictors are sized so that the premix engine, in operation, draws recycled flue gas and fresh air from the recycled flue gas line and fresh air line, respectively, in a predetermined proportion.

RADIANT TUBE RECUPERATIVE BURNER ASSEMBLY

A radiant tube recuperative burner assembly having a heat exchanger () and a burner (); said heat exchanger () comprises: a first inner tube (); a second heat exchanger tube () coaxial and external to the first tube (); a third tube () coaxial and external to said second tube (); a fourth tube () positioned perpendicular to said first tube (); a fifth tube () coaxial and internal to said fourth tube (); a flue gas outlet passage () positioned inside said fifth tube (); a first gap () between said first tube () and said second tube (); a second gap () between said third tube () and said second tube (); a sixth gap () between said fourth tube () and said fifth tube (); said first gap () communicates with said sixth gap (); said second gap () communicates with said flue gas outlet passage (); a Venturi tube () positioned transverse to said fifth tube (); the inlet of the Venturi tube () communicates with said sixth gap (); said Venturi tube () has an outlet that is in communication with said flue gas outlet passage (); and with a connection pipe () between said heat exchanger () and said burner (). 1131113151615241635153635273617151625241640353617402527415236415240415227421311. A radiant tube recuperative burner assembly having a heat exchanger () and a burner (); said heat exchanger () comprises: a first inner tube (); a second heat exchanger tube () coaxial and external to the first tube (); a third tube () coaxial and external to said second tube (); a fourth tube () positioned perpendicular to said first tube (); a fifth tube () coaxial and internal to said fourth tube (); a flue gas outlet passage () positioned inside said fifth tube (); a first gap () between said first tube () and said second tube (); a second gap () between said third tube () and said second tube (); a sixth gap () between said fourth tube () and said fifth tube (); said first gap () communicates with said sixth gap (); said second gap () communicates with said flue gas outlet passage (); a ...

Apparatus and method of controlling the thermal performance of an oxygen-fired boiler

A method of controlling the operation of an oxy-fired boiler includes combusting a fuel that comprises oil heavy residues in a boiler, the oil heavy residues including hydrocarbon molecules having a number average molecular weight from approximately 200 to approximately 3000 grams per mole, discharging flue gas from the boiler, recycling a portion of the flue gas to the boiler, combining a first oxidant stream with the recycled flue gas to form a combined stream, splitting the combined stream into a plurality of independent split streams, introducing each independent split stream at a different elevation of the boiler, and controlling independently a parameter of each of the independent split streams to adjust the heat release at each respective elevation of the boiler to vary the heat release profile of the boiler by adding a second oxidant stream to each respective independent split stream to form respective independent oxygen enriched split streams.

System and method for burning vanadium-containing fuels

In one aspect, a combustion system is configured to facilitate preventing the formation of vanadium pentoxide (V 2 O 5 ) and decrease a concentration of at least one of vanadium trioxide (V 2 O 3 ) and vanadium tetroxide (V 2 O 4 ) particles in an exhaust. The combustion system includes a vanadium-containing fuel supply and a combustor. The combustor is configured to generate a combustor exhaust gas including vanadium trioxide (V 2 O 3 ) and/or vanadium tetroxide (V 2 O 4 ) particles and to combust a reduced-oxygen mixture including the vanadium-containing fuel, ambient air, and a portion of the combustor exhaust gas. The combustion system also includes a particle separator configured to remove substantially all of the V 2 O 3 and/or V 2 O 4 particles from the combustor exhaust gas. A method for combusting fuel and a power generation system are also provided.

SYSTEM AND METHOD FOR INTEGRATED CARBON DIOXIDE GAS SEPARATION FROM COMBUSTION GASES

An integrated fuel combustion system with gas separation (adsorptive, absorptive, membrane or other suitable gas separation) separates a portion of carbon dioxide from a combustion gas mixture and provides for recycle of separated carbon dioxide to the intake of a fuel combustor for combustion. A process for carbon dioxide separation and recycle includes: admitting combustion gas to an adsorptive gas separation system contactor containing adsorbent material; adsorbing a portion of carbon dioxide; recovering a first product stream depleted in carbon dioxide for release or use; desorbing carbon dioxide from the adsorbent material and recovering a desorbed second product stream enriched in carbon dioxide for sequestration or use; admitting a conditioning and/or desorption fluid into the contactor and desorbing a second portion of carbon dioxide to recover a carbon dioxide enriched conditioning stream; and recycling a portion of the carbon dioxide enriched conditioning stream to an inlet of fuel combustor to pass through the fuel combustor for combustion. 1. An integrated adsorptive gas separation system for separating at least a portion of a combustion gas stream , said combustion gas stream comprising at least carbon dioxide and water components , the system comprising:(a) a prime mover comprising an oxidant inlet, a combustion chamber and an exhaust outlet, that during operation produces said combustion gas stream;(b) an auxiliary heat exchanger comprising an auxiliary heat exchange conduit fluidly connected to receive and heat a desorption fluid stream by a heating circuit fluidly connected to receive a heating fluid stream;(c) an adsorptive gas separator comprising at least one adsorbent contactor, said adsorbent contactor having an inlet and an outlet and comprising at least one adsorbent material for adsorbing said carbon dioxide component,wherein at least one said adsorbent contactor is fluidly connected to receive said combustion gas stream from said exhaust ...

System and Method for Integrated Carbon Dioxide Gas Separation from Combustion Gases

An integrated fuel combustion system with gas separation (adsorptive, absorptive, membrane or other suitable gas separation) separates a portion of carbon dioxide from a combustion gas mixture and provides for recycle of separated carbon dioxide to the intake of a fuel combustor for combustion. A process for carbon dioxide separation and recycle includes: admitting combustion gas to a gas separation system; sorbing a portion of carbon dioxide; recovering a flue gas stream depleted in carbon dioxide for release or use; desorbing the carbon dioxide from the gas separation system; admitting an oxidant stream into the gas separation system and forming a mixed oxidant stream; and recycling a portion of the mixed oxidant stream to an inlet of the fuel combustor. 1. An integrated gas separation process for separating at least a portion of a combustion gas stream from a fuel combustor of an integrated combustion gas separation system comprising said fuel combustor and a gas separation system , said combustion gas stream comprising at least carbon dioxide , and water components , the process comprising:(a) admitting a fuel stream to a fuel inlet and an oxidant stream to an oxidant inlet of said fuel combustor to produce said combustion gas stream;(b) admitting said combustion gas stream into said gas separation system;(c) sorbing at least a portion of said carbon dioxide component of said combustion gas stream within said gas separation system;(d) recovering a flue gas stream depleted in carbon dioxide relative to said combustion gas stream from said gas separation system;(e) desorbing at least a portion of said carbon dioxide component in said gas separation system;(f) admitting at least periodically an oxidant stream into said gas separation system forming a mixed oxidant stream; and(g) recovering at least periodically said mixed oxidant stream from said gas separation system and at least periodically admitting at least a portion of said mixed oxidant stream to said ...

METHOD AND APPARATUS FOR THE IMPROVED COMBUSTION OF BIOMASS FUELS

A cylindrical furnace having a vertical axis controls combustion. Solid fuel, particulates, and gases inside the furnace rotate around the axis, inducing radial stratification using centrifugal forces. Fuel and particulates drag on the wall of the cylinder, slipping in and out of suspension, thereby increasing particle residence times. The solid particles comprise combustible fuel particles, and non-combustible ash and contaminants. Control of the temperature of non-combustible particles and the wall surface prevents these non-combustible particles from adhering to, and building up on, the furnace wall. It is also advantageous to control the gas temperature leaving the furnace to minimize temperature-driven corrosion of downstream heat-exchange surfaces. Method and apparatuses are described to control the gas, non-combustible particle, and wall temperatures. The furnace can be integrated into a stand-alone boiler or as a combustor in which a portion of the pyrolysis gas from the combusting fuel is burned in a separate vessel. 1. A furnace burning biomass fuel defined by a cylindrical enclosure with a vertical axis , a top of said enclosure disposed to conduct hot gases to heat-absorbing surfaces or to a separate means for further combustion , in which solid fuel particles and combustion air are injected into said furnace and said fuel burns releasing gaseous products of combustion , in which noncombustible particles are present , in which said gases are induced to rotate around the vertical axis and said rotation entrains at least some of said fuel and noncombustible particles to rotate with said gases , and an average residence time of said particles in said cylindrical enclosure is greater than an average residence time of said gases in said cylindrical enclosure , and in which an air-to-fuel ratio is controlled at least at one combustion air injection elevation to control a temperature above the elevation of said combustion air injection.2. The furnace of in ...

Burner, Furnace, and Steam Cracking Processes Using the Same

A burner sub-system, a furnace comprising the same, a fuel combustion process and steam cracking process carried out in the furnace. The burner sub-system comprises a barrier wall segment between the burner tip and the flue-gas recirculation (“FGR”) duct, effectively blocking direct gas flow between the burner tip and the FGR duct opening, but without encircling the whole burner tip. The presence of the partial barrier wall has the advantage of preventing the temperature inside the FGR duct from becoming too high, while achieving low NOx emissions from the combustion process without overheating the burner tip because of reduced amount of heat reflection to the burner tip compared to an annular barrier wall. The invention is particularly useful in furnaces where hydrogen-rich fuel gas is combusted. 110-. (canceled)111. A furnace comprising at least one burner sub-system according to claim , further comprising:a furnace floor comprising the furnace floor segment of each of the at least one burner sub-system; andone or more furnace side walls;wherein the furnace floor and the one or more furnace side walls form a furnace fire box.12. The furnace of claim 11 , wherein the distance from the vertical centerline of any burner tip to any side wall is at least 30 centimeters.13. The furnace of claim 11 , which comprises multiple burner sub-systems and is free of any partitioning wall between adjacent burner sub-systems.14. The furnace of claim 11 , wherein the fire box has a height of at least 10.5 meters.15. The furnace of claim 11 , wherein the fire box has a height of at least 15.0 meters.16. The furnace of claim 11 , further comprising multiple side wall burners configured to produce at least one side wall burner flame from at least one of the furnace side walls.17. The furnace of claim 11 , which is free of a side wall burner configured to produce a side wall burner flame from any of the furnace side wall.18. The furnace of claim 11 , comprising at least three burner ...

Low NOx Burner with Exhaust Gas Recycle and Partial Premix

The pre-mix burner assembly includes a jet pump comprising a suction chamber, a flue gas inlet, and a combustion air tube with a combustion air nozzle. The combustion air inlet includes a combustion air tube with a tapered nozzle, and it is connected to a combustion air fan. The flue gas inlet is connected to the suction chamber and the combustion air fan. The suction chamber surrounds the combustion air tube, and it has a jet pump nozzle with a discharge. The assembly includes a fuel gas inlet connected to the combustion air tube. The combustion air and fuel gas mixture exits the combustion air nozzle creating a negative pressure in the suction chamber and drawing flue gas into the suction chamber. The assembly includes a mixing tube positioned downstream of the jet pump discharge, and a burner block connected to an outlet of the mixing tube. 1. A pre-mix burner assembly comprising: the combustion air tube receiving combustion air and having an inlet at one end and a combustion air nozzle at the opposite end, the combustion air nozzle tapering to an outlet having a smaller diameter than a diameter of the combustion air tube, the combustion air tube connected to a combustion air fan;', 'the flue gas inlet connected to the suction chamber and a source of flue gas;', 'the suction chamber surrounding the combustion air tube and the combustion air nozzle, the suction chamber having a jet pump nozzle with a jet pump discharge;, 'a jet pump comprising a combustion air tube, a flue gas inlet, and a suction chamber;'}a fuel gas inlet connected to the combustion air tube to allow fuel gas to mix with the combustion air in the combustion air tube to form a combustion air and fuel gas mixture, wherein the combustion air and fuel gas mixture exiting the combustion air nozzle creates a negative pressure in the suction chamber and draws flue gas from the flue gas inlet into the suction chamber, the suction chamber receiving the flue gas;a burner housing positioned downstream of ...

Gasification Reactor with Shared Partial Reactor Vessels

A gasification reactor is provided. The reactor comprises a first gasification area, a second gasification area and a shared combustion area. The shared combustion area is set between the first and second gasification areas. Therein, the (present invention applies interconnected fluidized beds in gasification. The connecting piping between the first and second gasification areas are separately replaced with dense beds to be integrated for forming a single reactor. Thus, the present invention simplifies the system, saves the cost and reduces the operation difficulty. 1. A gasification reactor with shared partial reactor vessels ,being applied with interconnected fluidized beds to process gasification by replacing a plurality of connecting vessels between two reaction areas to obtain an integrated single reactor distributed with bed material and comprising: 'wherein said first gasification area comprises a first gasification zone and a first dense bed; a first weir egress is located at an upper end of a side wall of said first gasification zone; and a first orifice is disposed on at a lower end of a side wall of said first dense bed to connect to said first gasification zone;', 'a first gasification area,'} 'wherein said second gasification area comprises a second gasification zone and a second dense bed; a second weir egress is located at an upper end of a side wall of said second gasification zone; and a second orifice is disposed on at a lower end of a side wall of said second dense bed to connect to said second gasification zone; and', 'a second gasification area,'} 'wherein said shared combustion area is located between and communicated with said first and second gasification areas; said shared combustion area comprises a combustion zone and a third dense bed; said third dense bed isolates gases of said combustion zone from said first and second gasification areas; a third orifice is disposed on at a lower end of a side wall of said third dense bed to connect to ...

Methods and Systems for Controlling the Products of Combustion

The present invention relates to methods and systems for controlling a combustion reaction and the products thereof. One embodiment includes a combustion control system having an oxygen supply stream and a high concentration carbon dioxide stream, mixing the streams to form an oxygenation stream substantially comprising oxygen and CO2 and having an oxygen to CO2 ratio, then mixing the oxygenation stream with a combustion fuel stream and combusting in a combustor to generate a combustion products stream having a temperature detected by a temperature sensor, the data from which is used to control the flow a carbon dioxide diluent stream to produce a desired temperature of combustion. The system may also include a control system configured to regulate the flow of the oxygen supply stream based on the flow rate and composition of the combustion fuel stream. The system may also include a gas turbine with an expander and having a load and a load controller in a feedback arrangement. Other embodiments include a hydrocarbon analyzer and multiple fuel streams that may be combined to form the combustion fuel stream. 1. A combustion system , comprising:{'sub': '2', 'a high concentration carbon dioxide (CO) stream;'}{'sub': 2', '2', '2', '2, 'at least one COflow regulation device configured to adjust an overall flow rate of the high concentration COstream and split the high concentration COstream into a primary diluent stream having a flow rate and a secondary diluent stream having a flow rate, wherein the at least one flow regulation device is further configured to adjust the primary diluent stream flow rate independently of the overall flow rate of the high concentration COstream;'}an oxygen supply stream having a flow rate;at least one oxygen flow regulation device configured to adjust the oxygen supply stream flow rate;{'sub': '2', 'a mixing device arranged to combine the primary diluent stream and the oxygen supply stream to form an oxygenation stream having a flow rate ...

COMBUSTION GAS SUPPLY SYSTEM

A combustion gas supply system has an air compressor supplying compressed air, a fuel supply device that supplies a fuel and a combustor that generates a pressurized combustion gas by combusting the fuel and the compressed air. At a gas supply and recovery section, the pressurized combustion gas generated by the combustor is supplied to a heat consumption apparatus, and the pressurized combustion gas after heat consumption is recovered as a used gas. A part of the used gas recovered is supplementarily compressed by a re-pressurizing compressor and supplied to the compressed air. 1. A combustion gas supply system , comprising:an air compressor that supplies compressed air;a fuel supply device that supplies a fuel;a combustor that generates a pressurized combustion gas by combusting the fuel supplied by the fuel supply device and the compressed air supplied by the air compressor;a gas supply and recovery section that supplies the pressurized combustion gas generated by the combustor to a heat consumption apparatus and recovers, as a used gas, the pressurized combustion gas whose heat has been consumed; anda re-pressurizing compressor that supplementarily compresses a part of the used gas recovered by the gas supply and recovery section and supplies the part of the used gas to the compressed air supplied by the air compressor.2. The combustion gas supply system according to claim 1 , wherein the re-pressurizing compressor supplementarily compresses the part of the used gas so as to pressurize the part of the used gas to a same pressure as a pressure of the compressed air supplied by the air compressor claim 1 , and a remaining part of the used gas is discharged to an outside.3. The combustion gas supply system according to claim 1 , further comprising:a cooler that cools the part of the used gas; anda condensation separator that separates moisture condensed by the cooling, from the part of the used gas,wherein the re-pressurizing compressor supplementarily compresses ...

METHOD FOR REDUCING HARMFUL GAS EMISSIONS FROM A GAS-FIRED SEALED COMBUSTION CHAMBER FORCED-DRAUGHT BOILER AND BOILER SO OBTAINED

A method for reducing harmful gas emissions from a gas-fired boiler including a sealed forced-draught combustion chamber in which there is a burner to which there leads a first conduit for drawing in combustion air and from which there departs a second conduit for the discharge of combustion flue gases. Provision is made for drawing off a portion of the flue gases or exhaust gases from the second conduit and injecting it into the combustion air to reduce the percentage of atmospheric oxygen present in that combustion air and consequently reduce the production of harmful gases in the combustion flue gases. A boiler operating according to the aforesaid method is also disclosed. 1. A method for reducing harmful gas emissions from a gas-fired boiler comprising a sealed forced-draught combustion chamber in which there is a burner to which is led a first conduit for drawing in combustion air and from which departs a second conduit for discharging combustion flue gases or exhaust gases ,wherein provision is made for drawing a portion of the flue gases or exhaust gases from the second conduit and injecting the portion of the flue gases or exhaust gases from the second conduit into the combustion air to reduce the percentage of atmospheric oxygen present in that combustion air and consequently reduce the generation of harmful gases in the combustion flue gases.2. The method according to claim 1 , wherein drawing of a portion of the flue gases or exhaust gases from the second conduit and injection of the portion of the flue gases or exhaust gases into the combustion air takes place by adjusting the pressures within the second conduit so that the portion of the flue gases or exhaust gases is at a higher pressure than that of the combustion air and/or alternatively by adjusting the pressure of that air so that the pressure of that air is below that pressure present in the second conduit.3. The method according to claim 1 , wherein the portion of flue gases or exhaust gases ...

Central heating oil burner, with fuel and air jets, has a downstream porous body or section at the burner pipe to increase heat delivery

The central heating oil burner has a jet (2) for the fuel (F) within the burner pipe (1) and a downstream air jet (3). A porous body (7) is downstream of the flame cone (FK) and/or the flame pipe has a porous section downstream of the air jet. The porous material is of a metal or ceramic foam.

Solid fuel combustion for industrial grade melting using slagging chamber

본 발명은 회분 함유 연료를 사용하여 용융 생성물을 형성하기 위해 용융로에 열을 공급하는 방법에 관한 것이다. 회분 성분을 갖는 연료는 슬래깅 연소로의 슬래깅 챔버에 도입되고, 슬래깅 챔버 내에서 제1 산화제 혼합물 및 제2 산화제 혼합물과 함께 적어도 부분적으로 연소된다. 회분 성분은 슬래깅 챔버에서 용융 슬래그의 층으로서 수집된다. 슬래깅 연소로의 가스 배출물은 슬래깅 연소로의 슬래깅 챔버로부터 고온의 용융로의 연소 공간으로 옮겨져서, 용융 생성물을 형성하기 위한 열을 공급한다. 용융 슬래그는 슬래깅 연소로의 슬래깅 챔버로부터 인출되고, 선택적으로 용융로에 도입되거나 혹은 용융로에 도입되지 않는다. The present invention relates to a method of supplying heat to a melting furnace to form a molten product using a ash containing fuel. The fuel with ash component is introduced into the slagging chamber of the slagging combustion furnace and burned at least partially with the first oxidant mixture and the second oxidant mixture in the slagging chamber. The ash component is collected as a layer of molten slag in the slagging chamber. The gaseous emissions of the slagging combustion furnace are transferred from the slagging chamber of the slagging combustion furnace to the combustion space of the hot melting furnace, supplying heat for forming the molten product. The molten slag is withdrawn from the slagging chamber of the slagging combustion furnace and is not selectively introduced into the furnace or introduced into the furnace.

通过氧燃料燃烧产生动力的方法和系统

一种通过氧燃料燃烧产生动力的方法。将含碳燃料和氧化剂气体供应到炉中。在第一运转模式中，氧化剂气体包括从氧源所输送的基本上纯氧的流用于通过氧燃烧燃料来产生主要包括二氧化碳和水的废气。废气从炉排出，并被分成再循环部分和结束部分。再循环部分被再循环至炉。通过在废气冷却器与氧加热器之间的通路中循环液体传热介质，将热从结束部分传递至基本上纯氧的流。

Method and plant for producing flammable gas from gas obtained from heat conversion of solid feed

Система и способ генерирования энергии с пониженным выбросом nox

1. Система (10) генерирования энергии, включающая: газотурбинную систему (15), включающую:камеру (20) сгорания, выполненную для сжигания потока (13) топлива, компрессор (16), выполненный для получения потока (14) подаваемого окислителя и подачи потока (18) окислителя под давлением в камеру (20) сгорания, ирасширитель (24), выполненный для получения потока (22), выходящего из камеры (20) сгорания, и образования отработанного потока (30), содержащего диоксид углерода, и выработки электрической энергии, исистему (54) рециркуляции отработанного газа, включающую:котел-утилизатор (38), выполненный для получения отработанного потока (30) и образования потока (52) рециркуляции, причем поток (52) рециркуляции смешивают со свежим окислителем (12) для образования потока (14) подаваемого окислителя, иконтур (60) регулирования рециркуляции отработанного газа, выполненный для получения обратной связи, по меньшей мере, с одним из следующих параметров: давление нагрузки, процентное отношение рециркуляции отработанного газа и температура воспламенения в камере (20) сгорания для регулирования запального отношения потока (14) подаваемого окислителя.2. Система по п.1, в которой газотурбинная система (15) действует в режиме частичного предварительного смешивания.3. Система по п.1, в которой газотурбинная система (15) действует в режиме полного предварительного смешивания.4. Система по п.1, в которой контур (60) регулирования рециркуляции отработанного газа выполнен для минимизации производства NOи улучшения устойчивости пламени при условиях частичной нагрузки.5. Система по п.1, в которой до 50% отработанного потока (30) подают рециклом обратно в компрессор (16).6. Система по п.1, РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F02C 3/30 (11) (13) 2013 113 936 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2013113936/06, 28.03.2013 (71) Заявитель(и): Дженерал Электрик Компани (US) Приоритет(ы): (30) Конвенционный приоритет: 30.03.2012 ...

Method for controlling the process of power production at the power station

FIELD: power industry. SUBSTANCE: method for controlling the process of power production at the power station with a furnace burning carbon-containing fuel with virtually pure oxygen, working at maximum capacity, includes: (a1) feeding the first supply stream of carbon-containing fuel into the furnace; (b1) feeding the first supply stream of virtually pure oxygen into the furnace to burn the first supply stream of carbon-containing fuel; (c1) extracting the burnt gas from the furnace via the burnt gas exhaust; (d1) heat removal from the burnt gas via heat-exchange surfaces in the burnt gas exhaust; (e1) recycling a portion of the burnt gas through the burnt gas recycling channel connected with the burnt gas exhaust downstream of the heat-exchanging surfaces at the first rate of the recycling stream's feeding into the furnace, in order to form with the first supply stream of virtually pure oxygen the first gas input stream; and, in the second load mode, corresponding to up to 90% of maximum capacity, includes: (a2) feeding the second supply stream of carbon-containing fuel into the furnace; (b2) feeding the second supply stream of virtually pure oxygen into the furnace to burn the second supply stream of carbon-containing fuel; (c2) extracting the burnt gas from the furnace via the burnt gas exhaust; (d2) heat removal from the burnt gas via heat-exchange surfaces in the burnt gas exhaust; (e2) recycling a portion of the burnt gas through the burnt gas recycling channel connected with the burnt gas exhaust downstream of the heat-exchanging surfaces at the second rate of the recycling stream's feeding into the furnace, in order to form with the second supply stream of virtually pure oxygen the second gas input stream; furthermore, the burnt gas extraction must be performed at the second rate, and the second rate of gas recycling stream must differ from the first rate of gas recycling rate by the value necessary to keep the second extraction rate roughly equal ...

For the system and method that integrated form from burning gases separates carbon dioxide

一种带有气体分离(吸附性、吸收性、膜或其他适当的气体分离)的集成式燃料燃烧系统，从燃烧气体混合物中分离二氧化碳的一部分并将分离的二氧化碳循环到燃料燃烧器的摄入口用于燃烧。一种分离和循环二氧化碳的方法，包括：允许燃料气体进入一包括吸附材料的吸附气体分离系统；吸附二氧化碳的一部分；回收消耗了二氧化碳的一第一产品流，用于排放或使用；从所述解吸材料解吸二氧化碳并回收解吸的、富集二氧化碳的一第二产品流，用于封存或使用；允许一调节流体和/或解吸流体进入所述接触器并解吸二氧化碳的一第二部分，以回收一富集二氧化碳的调节流；循环所述富集二氧化碳的调节流的至少一部分到燃料燃烧器的一入口，以经过所述燃料燃烧器用于燃烧。

A kind of zero-emission combustion method of coal-burning boiler

本发明公开了一种燃煤锅炉的零排放燃烧方法，包括以下步骤⑴：在锅炉一侧安装一台燃烧器，燃烧器的烟气出口与锅炉炉膛连通；⑵：煤粉根据杂质含量加入生石灰、盐、煤矸石混合并压制成煤饼，投入燃烧器中燃烧；燃烧时，在燃烧器内通入燃烧助剂，煤饼与空气以及燃烧助剂混合并充分燃烧后，产生的高温烟气通入锅炉炉膛；⑶：在锅炉炉膛的中部强制送风，高温烟气与吹入炉膛的空气混合后在炉膛内进行二次燃烧，燃烧产生的热能输送至供热系统；⑷：燃烧产生的废气通入废气催化分解处理器，将废气分解为可燃气体后，通入到锅炉强制送风的进风口。二次燃烧，保证燃煤的充分燃烧，并实现无烟囱零排放的燃烧目的，保护了空气环境，高效环保。

SOLID FUEL BURNING FOR INDUSTRIAL MELTING WITH A SLAG-FORMING FUEL

1. Способ подачи тепла к плавильной печи для образования расплавленного продукта, при котором: ! вводят первое топливо, имеющее зольный компонент и горючий компонент, в шлакообразующую камеру шлакообразующей топки; ! вводят первую окислительную смесь в шлакообразующую камеру шлакообразующей топки, при этом первая окислительная смесь имеет концентрацию кислорода 10-100 об.%; ! по выбору вводят второе топливо в шлакообразующую камеру шлакообразующей топки; ! вводят вторую окислительную смесь в шлакообразующую камеру шлакообразующей топки, при этом вторая окислительная смесь имеет концентрацию кислорода 22-100 об.%; ! сжигают, по меньшей мере, часть сжигаемого компонента первого топлива и по выбору, по меньшей мере, часть второго топлива в шлакообразующей камере шлакообразующей топки, тем самым образуя отделенный зольный компонент и образуя газовый поток, выходящий из шлакообразующей топки; ! собирают, по меньшей мере, часть отделенного зольного компонента в виде слоя жидкого шлака, соприкасающегося с, по меньшей мере, частью внутренней поверхности шлакообразующей камеры; ! пропускают, по меньшей мере, часть газового потока, выходящего из шлакообразующей топки, от шлакообразующей камеры шлакообразующей топки в пространство сгорания в плавильной печи при температуре 1000-2500°С для подачи тепла для образования расплавленного продукта; и ! извлекают жидкий шлак из шлакообразующей камеры шлакообразующей топки. ! 2. Способ по п.1, при котором концентрация кислорода в первой окислительной смеси составляет 20-30 об.%. ! 3. Способ по п.1, при котором концентрация кислорода в первой окислительной смеси составляет 10-20 об.%. ! 4. Способ по � РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2008 117 475 (13) A (51) МПК F23B 90/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21), (22) Заявка: 2008117475/06, 30.04.2008 (71) Заявитель(и): ЭР ПРОДАКТС ЭНД КЕМИКАЛЗ, ИНК. (US) (30) Конвенционный приоритет: 02.05.2007 US 11/ ...

A kind of depth flue gas recirculation fuel oil low NOx combustion method and its device

本发明公开了一种深度烟气循环燃油低NOx燃烧方法及其装置，该燃烧装置由外筒、旋流器、文丘里喷管和中心筒组成，旋流器和中心筒的制作材料表面镀氟或喷氟处理。采用外循环烟气与空气的混合物为氧化剂，外循环烟气倍率(与空气燃烧烟气量的比值)为25％～80％，烟气空气混合物温度大于锅炉排烟温度5℃～10℃，外筒的扩口角度β 2 为45°～75°、扩口深度为0.08DN～0.12DN(Diameter Nominal,外筒公称直径，单位：mm)，旋流器的旋流强度为0.6～1.8、旋流轴向分速度为10m/s～35m/s，文丘里喷管的长度L为0DN～1.05DN、高度H为0DN～0.3DN、收缩角α为35°～55°、扩张角β 1 为45°～75°，中心筒内布置油喷嘴和点火器，中心筒内油喷嘴四周直流风的速度为5m/s～15m/s。

Control method of pulverised-coal boiler plant

FIELD: power industry. SUBSTANCE: invention relates to power industry. Prepared brown coal is used as fuel according to the control method of the pulverised-coal boiler plant. In the boiler plant, exit gas removed from an exit gas duct is added to air from a primary air fan for preparation of mixed gas with oxygen concentration of less than 12% in volumetric ratio; with that, mixed gas is separately supplied to a conveying gas duct that passes through a gas heater and a bypass duct for conveying gas, which bypasses the gas heater, and after that, mixed gas is supplied to the mill. EFFECT: invention allows safe use of prepared low-grade coal as fuel and requires inconsiderable modification of the existing pulverised-coal boiler plants. 4 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F23K 3/02 (13) 2 563 646 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014105184/06, 12.07.2012 (24) Дата начала отсчета срока действия патента: 12.07.2012 (72) Автор(ы): ТАДА Тосия (JP) (73) Патентообладатель(и): КАБУСИКИ КАЙСЯ КОБЕ СЕЙКО СЕ (КОБЕ СТИЛ, ЛТД.) (JP) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 20.08.2015 Бюл. № 23 R U 13.07.2011 JP 2011-154894 (45) Опубликовано: 20.09.2015 Бюл. № 26 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 13.02.2014 2 5 6 3 6 4 6 (56) Список документов, цитированных в отчете о поиске: JPS 62134416 А, 17.06.1987. JP 2010242999 А, 28.10.2010. US 2009/0308292 А1, 17.12.2009. JP 2004347241 А, 28.10.2010. RU 2230981 С2, 20.06.2004. SU 254704 A, 05.03.1970 (86) Заявка PCT: 2 5 6 3 6 4 6 R U C 2 C 2 JP 2012/067862 (12.07.2012) (87) Публикация заявки PCT: WO 2013/008893 (17.01.2013) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) СПОСОБ УПРАВЛЕНИЯ ПЫЛЕУГОЛЬНОЙ КОТЕЛЬНОЙ УСТАНОВКОЙ (57) Реферат: Изобретение относится к энергетике. В в канал для транспортирующего ...

A heating medium boiler having combustor reducing nitrogen oxide

본 발명은 중심에 연료노즐이 형성되며, 완전히 분리된 복수 개의 연료노즐에 의한 복수 개의 소형 연료희박/연료농후 화염(fuel lean/fuel rich flame)을 연소기 끝단 단면 전체에 형성하여, 화염에서 생성되는 배기가스가 재순환되는 질소산화물(NOx)을 최소화하는 연소기를 포함하는 열매체 보일러에 관한 것으로 단순한 구성으로써 주변 장치를 필요로 하지 않으면서 기본적인 연소시스템을 구현할 수 있 효과 및 소형의 분할 화염을 통한 열 분산과 화염온도 저하, 각 소형화염들의 최적화된 공연비 화염 형성 및 빠른 연소반응 유도를 통해 질소산화물(NOx)을 현저히 저감시킬 수 있는 효과가 있다. In the present invention, a fuel nozzle is formed at the center, and a plurality of small fuel lean / fuel rich flames formed by a plurality of completely separated fuel nozzles are formed at the entire end surface of the combustor, thereby generating a flame. Thermal heating boiler including a combustor that minimizes NOx to which exhaust gas is recycled. Simple structure, which can realize basic combustion system without the need for peripheral device. Heat dissipation through small split flame There is an effect that can significantly reduce the nitrogen oxides (NOx) through the reduction of the flame temperature, the formation of optimized air-fuel ratio flame of each small flame and the rapid combustion reaction.

Methods and systems for controlling the products of combustion

The present invention relates to methods and systems for controlling a combustion reaction and the products thereof. One embodiment includes a combustion control system having an oxygenation stream substantially comprising oxygen and CO 2 and having an oxygen to CO 2 ratio, then mixing the oxygenation stream with a combustion fuel stream and combusting in a combustor to generate a combustion products stream having a temperature and a composition detected by a temperature sensor and an oxygen analyzer, respectively, the data from which are used to control the flow and composition of the oxygenation and combustion fuel streams. The system may also include a gas turbine with an expander and having a load and a load controller in a feedback arrangement.

System and method for a turbine combustor

A system includes a turbine combustor that includes a head end portion having a head end chamber, a combustion portion having a combustion chamber disposed downstream from the head end chamber, a cap disposed between the head end chamber and the combustion chamber, and a flow separator configured to separate a first exhaust flow from an oxidant flow. The flow separator is configured to direct the first exhaust flow into the head end chamber. The turbine combustor also includes a mixing region configured to mix the first exhaust flow with the oxidant flow to provide an oxidant-exhaust mixture.

System and method for a turbine combustor

A system includes a turbine combustor that includes a head end portion having a head end chamber, a combustion portion having a combustion chamber disposed downstream from the head end chamber, a cap disposed between the head end chamber and the combustion chamber, and a flow distributor configured to distribute at least one of an exhaust flow, an oxidant flow, an oxidant-exhaust mixture, or any combination thereof circumferentially around the head end chamber.

System and method for a turbine combustor

A system includes a turbine combustor that includes a head end portion having a head end chamber, a combustion portion having a combustion chamber disposed downstream from the head end chamber, a cap disposed between the head end chamber and the combustion chamber, and a flow distributor configured to distribute an exhaust flow circumferentially around the head end chamber. The flow distributor includes at least one exhaust gas flow path.

System and method for barrier in passage of combustor of gas turbine engine with exhaust gas recirculation

In one embodiment, a system includes a turbine combustor having a combustor liner disposed about a combustion chamber, a head end upstream of the combustion chamber relative to a downstream direction of a flow of combustion gases through the combustion chamber, a flow sleeve disposed at an offset about the combustor liner to define a passage, and a barrier within the passage. The head end is configured to direct an oxidant flow and a first fuel flow toward the combustion chamber. The passage is configured to direct a gas flow toward the head end and to direct a portion of the oxidant flow toward a turbine end of the turbine combustor. The gas flow includes a substantially inert gas. The barrier is configured to block the portion of the oxidant flow toward the turbine end and to block the gas flow toward the head end within the passage.

System and method for diffusion combustion with oxidant-diluent mixing in a stoichiometric exhaust gas recirculation gas turbine system

A system is provided with a turbine combustor having a first diffusion fuel nozzle, wherein the first diffusion fuel nozzle has first and second passages that separately inject respective first and second flows into a chamber of the turbine combustor to produce a diffusion flame. The first flow includes a first fuel, and the second flow includes a first oxidant and a first diluent. The system includes a turbine driven by combustion products from the diffusion flame in the turbine combustor. The system also includes an exhaust gas compressor, wherein the exhaust gas compressor is configured to compress and route an exhaust gas from the turbine to the turbine combustor along an exhaust recirculation path.

Methods and systems for controlling the products of combustion

The present invention relates to methods and systems for controlling a combustion reaction and the products thereof. One embodiment includes a combustion control system having an oxygen supply stream and a high concentration carbon dioxide stream, mixing the streams to form an oxygenation stream substantially comprising oxygen and CO2 and having an oxygen to CO2 ratio, then mixing the oxygenation stream with a combustion fuel stream and combusting in a combustor to generate a combustion products stream having a temperature detected by a temperature sensor, the data from which is used to control the flow a carbon dioxide diluent stream to produce a desired temperature of combustion. The system may also include a control system configured to regulate the flow of the oxygen supply stream based on the flow rate and composition of the combustion fuel stream. The system may also include a gas turbine with an expander and having a load and a load controller in a feedback arrangement. Other embodiments include a hydrocarbon analyzer and multiple fuel streams that may be combined to form the combustion fuel stream.

Methods and systems for controlling the products of combustion

The present invention relates to methods and systems for controlling a combustion reaction and the products thereof. One embodiment includes a combustion control system having an oxygenation stream substantially comprising oxygen and CO 2 and having an oxygen to CO 2 ratio, then mixing the oxygenation stream with a combustion fuel stream and combusting in a combustor to generate a combustion products stream having a temperature and a composition detected by a temperature sensor and an oxygen analyzer, respectively, the data from which are used to control the flow and composition of the oxygenation and combustion fuel streams. The system may also include a gas turbine with an expander and having a load and a load controller in a feedback arrangement.

System and method for diffusion combustion in a stoichiometric exhaust gas recirculation gas turbine system

A system is provided with a turbine combustor having a first diffusion fuel nozzle, wherein the first diffusion fuel nozzle is configured to produce a diffusion flame. The system includes a turbine driven by combustion products from the diffusion flame in the turbine combustor. The system also includes an exhaust gas compressor, wherein the exhaust gas compressor is configured to compress and route an exhaust gas from the turbine to the turbine combustor along an exhaust recirculation path. In addition, the system includes a first catalyst unit disposed along the exhaust recirculation path.

System and method for diffusion combustion with fuel-diluent mixing in a stoichiometric exhaust gas recirculation gas turbine system

A system is provided with a turbine combustor having a first diffusion fuel nozzle, wherein the first diffusion fuel nozzle has first and second passages that separately inject respective first and second flows into a chamber of the turbine combustor to produce a diffusion flame. The first flow includes a first fuel and a first diluent, and the second flow includes a first oxidant. The system includes a turbine driven by combustion products from the diffusion flame in the turbine combustor. The system also includes an exhaust gas compressor, wherein the exhaust gas compressor is configured to compress and route an exhaust gas from the turbine to the turbine combustor along an exhaust recirculation path.

METHOD FOR MANAGING A DUST-COAL BOILER PLANT

1. Способ управления пылеугольной котельной установкой, в которой применяют обогащенный низкосортный уголь в качестве топлива, в котором:осуществляют приготовление смешанного газа, имеющего концентрацию кислорода меньше 12% по объему, посредством добавления котельного отходящего газа в воздух; иподают смешанный газ в углеразмольное устройство.2. Способ управления пылеугольной котельной установкой по п. 1, в которомпоток смешанного газа разделяют и подают в канал для транспортирующего газа, который проходит через подогреватель газа, и обводной канал для транспортирующего газа, который обходит подогреватель газа, и смешанный газ затем подают в углеразмольное устройство.3. Способ управления пылеугольной котельной установкой по п. 1, в котором также извлекают котельный отходящий газ из канала для отходящего газа, расположенного по потоку после обессеривающей колонны.4. Способ управления пылеугольной котельной установкой по п. 2, в котором также извлекают котельный отходящий газ из канала для отходящего газа, расположенного по потоку после обессеривающей колонны. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F23K 3/02 (13) 2014 105 184 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014105184/06, 12.07.2012 (71) Заявитель(и): КАБУСИКИ КАЙСЯ КОБЕ СЕЙКО СЕ (КОБЕ СТИЛ, ЛТД.) (JP) Приоритет(ы): (30) Конвенционный приоритет: 13.07.2011 JP 2011-154894 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 13.02.2014 R U (43) Дата публикации заявки: 20.08.2015 Бюл. № 23 (72) Автор(ы): ТАДА Тосия (JP) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2013/008893 (17.01.2013) A Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" R U (57) Формула изобретения 1. Способ управления пылеугольной котельной установкой, в которой применяют обогащенный низкосортный уголь в качестве топлива, в котором: осуществляют приготовление смешанного газа, имеющего ...

Device and method for feeding fuel

본 발명은 연료 및 연소용공기의 혼합과정 및 혼합비의 제어성을 개선할 수 있는 연료공급장치 및 연료공급방법을 제공함과 동시에, 새로운 연소특성을 발휘할 수 있는 연소장치 및 연소방법을 제공한다. 연소장치의 연료공급장치는 연료공급수단, 연소가스도입장치, 수증기공급장치, 혼합장치 및 연료가스도입장치를 구비한다. 연소가스도출장치는 연소영역에 생성된 연소가스를 연소영역으로부터 로외로 도출한다. 혼합장치는 로외로 도출된 연소가스 및 수증기공급장치의 수증기 중 적어도 하나와 연료공급수단의 연료를 혼합한다. 연료가스도입장치는 연소가스, 수증기 및 연료의 혼합유체를 연료가스로서 연소영역에 도입하고, 연료가스류를 연소용공기와 혼합시킨다. 연소가스를 로외로 도출한 후에 연료와 혼합하는 공정과, 연료가스류를 연소용공기와 다시 혼합하는 공정,이 단계적으로 실행되어, 연료 및 연소용공기의 혼합과정 및 혼합비의 제어성이 향상된다. 또한, 이같은 연료가스류를 제어함으로써 화염특성을 제어하여, 새로운 특성을 갖는 화염을 연소영역에 형성할 수 있게 된다. The present invention provides a fuel supply device and a fuel supply method capable of improving the controllability of the mixing process and the mixing ratio of fuel and combustion air, and at the same time, a combustion device and a combustion method capable of exhibiting new combustion characteristics. The fuel supply device of the combustion device includes a fuel supply means, a combustion gas introduction device, a steam supply device, a mixing device, and a fuel gas introduction device. The combustion gas extracting apparatus derives the combustion gas generated in the combustion region out of the combustion region. The mixing device mixes the fuel of the fuel supply means with at least one of the combustion gas and the vapor of the steam supplying device drawn out of the furnace. The fuel gas introducing apparatus introduces a mixed fluid of combustion gas, water vapor, and fuel as a fuel gas into the combustion zone, and mixes the fuel gas stream with combustion air. After the combustion gas is discharged out of the furnace, the process of mixing with the fuel and the process of mixing the fuel gas flow with the combustion air again are carried out step by step, thereby improving the control of the mixing process and the mixing ratio of the fuel and the combustion air. . In addition, by controlling such fuel gas flows, the flame characteristics can be controlled to form flames having new characteristics in the combustion zone. 연료공급장치, 연소장치, ...

Oxygen-enriched combustion device and method of solid fuel circulating fluidized bed

本发明公开了属于固体燃料清洁利用领域的一种固体燃料循环流化床富氧燃烧装置及方法。该装置主要包括风室、布风装置、炉膛、高温旋风分离器、返料器、换热器、省煤器、中温旋风分离器、二级配风管，其中炉膛由截面积较大的下部密相鼓泡或湍动强混合区和截面积较小的上部稀相快速或气力输送的准平推流区构成，该方法是在循环流化床富氧燃烧装置中采用富氧燃烧分区调控和多级配风来实现固体燃料燃烧；其中，一级风为氧气和再循环烟气混合气，二级风为氧气，播煤风和松动风为再循环烟气；本发明能改善现有技术的不足，使固体燃料燃烧后烟气中CO 2 浓度达到80％以上，利于燃烧后封存或利用，同时减少了氮氧化物、硫氧化物排放，有广阔的应用前景。

Gas turbine power plant with non-homogeneous input gas

本发明涉及用于运行燃气涡轮(6)的方法，燃气涡轮包括具有环形入口区的压缩机(1)、至少两个喷燃器、燃烧室(4，14，15)和涡轮(7，16，17)。根据该方法，由具有比压缩机进气流的平均氧浓度低的氧浓度的氧减少气体(21)构成的至少一个第一部分进气流和由新鲜空气(2)构成的至少一个第二部分进气流以沿入口区的周向方向交替的方式供给到压缩机(1)。另外，本发明涉及具有燃气涡轮(6)的燃气涡轮发电站，燃气涡轮的压缩机入口(3)包括至少一个第一节段(51)和至少一个第二节段(52)，它们围绕压缩机入口沿周向方向以交替方式布置，其中氧减少气体(21)的供给连接到第一节段(51)上而新鲜空气的供给连接到压缩机入口(3)的第二节段(52)上。

Burning of solid fuel for industrial melting with slag-forming fire chamber

FIELD: metallurgy. ^ SUBSTANCE: method of heat feeding to melting furnace for formation of molten product at which it is introduced the first fuel, allowing ash component and combustible component, into slag-forming chamber of slag-forming fire chamber; it is introduced the first oxidation mixture into slag-forming chamber of slag-forming fire chamber, herewith the first oxidation mixture allows oxygen concentration 10-100 rev%; by selection, it is introduced the second fuel into slag-forming chamber of slag-forming fire chamber; it is introduced the second oxidation mixture into slag-forming chamber of slag-forming fire chamber, herewith the second oxidation mixture allows oxygen concentration 22-100 vol. %; it is burnt at least part of burnt component of the first fuel and, by selection at least part of the second fuel in slag-forming chamber of slag-forming fire chamber, with this forming separated ash component and forming gas flow, out from slag-forming fire chamber; it is collected at least part of separated ash component in the form of layer of liquid slag, contacting to at least part of inner surface of slag-forming chamber; it is passed at least part of gas flow, out from slag-forming fire chamber, from slag-forming chamber of slag-forming fire chamber into burning space in melting furnace at temperature 1000-2500C for heating feeding for formation of molten product, and it is extracted liquid slag from slag-forming chamber of slag-forming fire chamber. ^ EFFECT: increasing of maintainability of furnace and removing of blemishes in molten product. ^ 17 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 379 237 (13) C1 (51) МПК C03B 5/235 (2006.01) F23C 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2008117475/06, 30.04.2008 (24) Дата начала отсчета срока действия патента: 30.04.2008 (73) Патентообладатель(и): ЭР ПРОДАКТС ЭНД КЕМИКАЛЗ, ИНК. (US) (45) ...

Method and apparatus for recovering sensible heat from a hot exhaust gas

A method and apparatus for recovering sensible heat from a hot exhaust gas having an oxygen concentration of less than 21 vol % in a fuel-air fired combustion device. An oxidant stream comprising a gas having an oxygen concentration of greater than 21 vol % is introduced into the combustion process to form an oxidant mixture comprising the hot exhaust gas, the oxidant and any air present, the mixture having an average combined oxygen concentration of less than 21 vol %.

Plant and method for dry extracting / cooling heavy ashes and for controlling the combustion of high unburnt content residues

본 발명은 다음을 허용함으로써 중회분을 건조 추출/냉각하고, 높은 미연소 성분 잔류물의 연소를 제어하기 위한 시스템에 관한 것이다: 보일러 기저로부터 중회분 추출, 보일러 내에 이미 이용 가능한 연소된 뜨거운 공기 및 비활성 연소 흄(fume)의 결합 사용에 의한 추출기 벨트 위에서의 후-연소 촉진 및 조정, 벨트 위에 존재하는 회분을 냉각하고 선택적으로 높은 미연소 성분의 경회분 분획과 함께 보일러 내에서 이들을 모두 또는 부분적으로 재순한(도 1). 추출기, 후-연소, 바이오매스, RDF, 미연소물, 연소챔버

METHOD AND DEVICE FOR REDUCING THE EMISSIONS OF NITROGEN OXIDES ROTATING A ROTATING TUBULAR FURNACE

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2018 109 528 A (51) МПК F27B 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2018109528, 30.08.2016 (71) Заявитель(и): ХОЛСИМ ТЕХНОЛОГИ ЛТД (CH) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ГАФНЕР Ирвин (CH) 08.09.2015 AT A 586/2015 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 19.03.2018 R U (43) Дата публикации заявки: 19.09.2019 Бюл. № 26 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2017/042615 (16.03.2017) R U (54) СПОСОБ И УСТРОЙСТВО ДЛЯ СНИЖЕНИЯ ВЫБРОСОВ ОКИСЛОВ АЗОТА ВРАЩАЮЩЕЙСЯ ТРУБЧАТОЙ ПЕЧИ (57) Формула изобретения 1. Способ снижения выбросов оксидов NOx азота вращающейся трубчатой печи для обжига клинкера, при котором подаваемое через горелку вращающейся трубчатой печи топливо сжигают вместе с подаваемым через горелку первичным воздухом, и первичный воздух имеет более низкое содержание кислорода по сравнению с окружающим воздухом и более высокую температуру по сравнению с окружающим воздухом, причём первичный воздух получают посредством смешивания окружающего воздуха с отработанным газом из вращающейся трубчатой печи или из подсоединённого к вращающейся трубчатой печи теплообменника, предназначенного для предварительного подогрева сырьевой муки, отличающийся тем, что первичный воздух, кроме того, получают посредством смешивания с подогретым воздухом, в частности, с отводимым воздухом клинкерного холодильника. 2. Способ по п. 1, отличающийся тем, что соотношение смеси окружающего воздуха, отработанного газа и подогретого воздуха регулируют таким образом, что первичный воздух подают в горелку с температурой от 50 до 250°C, в частности от 100 до 150°C, и с содержанием кислорода от 8 до 18 об. %, в частности от 13 до 16 об.%. 3. Способ по п. 1 или 2, отличающийся тем, что смешивание окружающего воздуха, отработанного газа и подогретого воздуха регулируют для получения соответствующего процессу объёмного потока первичного ...

Using high temperature FGR and the super low NOx combustion apparatus of Coanda effect

提供了一种使用高温FGR和康达效应的超低NOx燃烧装置。产生于燃烧室中的燃烧气体被回收并且和空气流进行混合以作为混合气体被再次注入到燃烧室中，以使得燃料或空气流可被迅速地加热至燃点温度。另外，氧气浓度被稀释以减少NOx，CO和CO2。其次，康达喷嘴引导高温燃烧气体，并且空气通过康达喷嘴的一端部被注入。因此，足够的高温燃烧气体被注入以形成空气流和高温燃烧气体的混合气体。此外，简化了燃烧室的结构，并且减少了制造成本和安装面积。因此，大幅度地降低了成本。

Premix burner for generating a hot gas

Bei einem Vormischbrenner, der aus zwei aufeinander positionierten hohlen Teilkegelkörpern (1, 2) mit in Strömungsrichtung zunehmender Kegelneigung besteht, geschieht die Brennstoffzuführung über eine zentrale Brennstoffdüse (3) und/oder über mehrere Brennstoffdüsen (17), die entlang der Einströmung der Verbrennungsluft (15) in den Innenraum (14) des Brenners plaziert sind. Die Verbrennungsluft (15) selbst ist ein Gemich aus Frischluft und Abgas. Die Frischluft wird über einen ersten Strömungstrichter (23a, 23b) herangeführt, über einen zweiten Strömungstrichter (22a, 22b) findet eine Abgasrückführung statt. Diese beiden Gase vermischen sich vorgänging ihrer tangentialen Einströmung in den Innenraum 14. Im Bereich der Rückströmzone (6) entsteht eine optimale, homogene Brennstoffkonzentration über den Querschnitt. In the case of a premix burner consisting of two hollow partial cone bodies (1, 2) positioned one on top of the other with an increasing cone inclination in the direction of flow, the fuel is supplied via a central fuel nozzle (3) and / or via a plurality of fuel nozzles (17) which run along the inflow of the combustion air ( 15) are placed in the interior (14) of the burner. The combustion air (15) itself is a mixture of fresh air and exhaust gas. The fresh air is brought in via a first flow funnel (23a, 23b), and exhaust gas recirculation takes place via a second flow funnel (22a, 22b). These two gases mix beforehand due to their tangential inflow into the interior 14. In the area of the return flow zone (6), an optimal, homogeneous fuel concentration is created over the cross section.

Method of operating a swirl stabilized burner and burner for carrying out the method

In a method of operating a swirl-stabilized burner operated with gaseous and/or liquid fuels (12, 16), in which combustion air (7) or a mixture of recycled flue gas (30) and fresh air (29), which mixture is formed by injector delivery, and fuel (12, 16) are intensively mixed by means of a swirl generator (37) and then burned, in the course of which a backflow zone (24), which stabilizes the flame, is formed, starting air (38), which has at least a radial velocity component, is injected during the starting action at the downstream end of the swirl generator (37) in such a way as to be directed from the margin of the burner into the center. The injection of the starting air (38) is switched off after the end of the starting action, so that the burner works in such a way as to be unaffected in normal operation. The invention improves the ignition conditions, increases the flame stabilization, and reduces the pollutant emissions when the burner is being started.

Burner array for water heating apparatus

The invention relates to a water heating apparatus which uses a submergible, pressurized combustion chamber having multiple external heating surfaces, a forced draft burner and a flue collector that collects and passively recirculates a portion of the flue gases back into the burner air intake region. An improved burner array more completely mixes the combustible gases in the combustion region and operates over a wide range of input demands.

Burner for operating a unit for generating a hot gas

Patent CH679692A5

Premixing burner for producing hot gas

In a premixing burner, which consists of two hollow partial conical bodies (1, 2), which are positioned on one another and have a cone inclination increasing in the direction of flow, the fuel feed takes place via central fuel nozzle (3) and/or via a plurality of fuel nozzles (17), which are placed along the inflow of the combustion air (15) into the interior (14) of the burner. The combustion air (15) itself is a mixture of fresh air and exhaust gas. The fresh air is led up via a first flow funnel (23a, 23b ) and exhaust gas recirculation takes place via a second flow funnel (22a, 22b). These two gases mix with one another before flowing tangentially into the interior (14). An optimum, homogenous fuel concentration over the cross-section arises in the region of the return flow zone (6).

Method of operating a firing installation

In a firing installation, fresh air (6) is drawn in and mixed with a fraction of flue gases (7), which are taken from the combustion chamber (1), by means of a fan (5) which acts outside of the casing of the firing installation. The fresh air/flue gas mixture (8) thus formed flows on its way to the combustion chamber (1) through a first heat exchanger (2a) whose caloric preparation is accomplished by the flue gases (7) fed in. In the combustion chamber (1) itself, this mixture flows through a heat exchanger (2) placed there. Before the mixture (9) thus preheated is fed as combustion air to a burner (4), it undergoes a further mixing with flue gases via a number of jet injectors (3), which further increases the temperature of this combustion air (10), with an optimized flue gas fraction.

Patent CH680157A5

Method for operating a combustion plant

Premix burner for generating a hot gas

Fluidized bed gasification combustion furnace

가스화 노와 연소로가 일체화되어 있고, 가스화 노에서 발생한 미연숯을 연소로에서 연소시키고, 이 연소열을 가스화용 열원으로서 이용할 수 있는 유동층가스화 연소로이다. 유동층가스화 연소로(1)는 제 1 칸막이벽(2)에 의하여 분할된 가스화 노(3)와 연소로(4)를 구비하고 있다. 가스화 노(3)에 있어서는 노바닥에 있는 산기장치(32, 33)에 의하여 유동매체의 선회류가 형성되고, 상승류의 일부는 연소로(4)로 유입된다. 연소로(4)는 제 2 칸막이벽(5)에 의하여 주연소실(6)과 열회수실(7)로 분할되어 있다. 주연소실(6)에 있어서는 노바닥에 있는 산기장치(34, 35)에 의하여 유동매체의 선회류가 형성되고, 상승류의 일부는 열회수실(7)로 유입된다. It is a fluidized bed gasification furnace in which a gasification furnace and a combustion furnace are integrated, and the unburned charcoal generated in the gasification furnace is combusted in a combustion furnace, and this heat of combustion can be used as a heat source for gasification. The fluidized bed gasification combustion furnace 1 includes a gasification furnace 3 and a combustion furnace 4 divided by the first partition wall 2. In the gasifier 3, swirl flow of the fluid medium is formed by the diffuser devices 32 and 33 at the bottom of the furnace, and a part of the upward flow flows into the combustion furnace 4. The combustion furnace 4 is divided into the main combustion chamber 6 and the heat recovery chamber 7 by the second partition wall 5. In the main combustion chamber 6, the swirl flow of the fluid medium is formed by the diffusers 34 and 35 at the bottom of the furnace, and a part of the upward flow flows into the heat recovery chamber 7.

FUEL DILUTION METHODS AND APPARATUS FOR NOx REDUCTION

노(34)에 연결된 버너(36) 안으로 도입된 연료가스와 연소공기의 연소에 의해 생성된 연도가스내 질소 산화물 함량의 감소방법 및 장치가 제공됨. 방법은 기본적으로, 연소공기를 버너(36)로 인도하고, 노(34)로부터의 연도가스와 연료가스를 혼합하기 위해 버너(36)와 노(34)의 외측에 챔버(10)를 제공하며, 노(34)로부터의 연도가스가 챔버(10) 안으로 흡입되고 그 안에서 연료가스와 혼합되어 연료가스를 희석시키도록 연료제트 형태의 연료가스를 혼합챔버(10)로 방출한 다음 연도가스와 연료가스의 생성 혼합물을 버너(36)로 인도하여, 여기에서 혼합물이 연소공기와 배합되고 노(34)에서 연소되는 단계를 포함한다. A method and apparatus are provided for reducing the content of nitrogen oxides in flue gas produced by combustion of fuel gas and combustion air introduced into burner 36 connected to furnace 34. The method basically directs combustion air to burner 36 and provides chamber 10 outside burner 36 and furnace 34 for mixing flue gas and fuel gas from furnace 34. In addition, the flue gas from the furnace 34 is sucked into the chamber 10, and the fuel gas in the form of a fuel jet is discharged into the mixing chamber 10 so as to dilute the fuel gas by mixing with the fuel gas therein, and then the flue gas and the fuel. Directing the resulting mixture of gases to burner 36, where the mixture is combined with combustion air and combusted in furnace 34.

A heating medium boiler having combustor reducing nitrogen oxide

본 발명은 중심에 연료노즐이 형성되며, 완전히 분리된 복수 개의 연료노즐에 의한 복수 개의 소형 연료희박/연료농후 화염(fuel lean/fuel rich flame)을 연소기 끝단 단면 전체에 형성하여, 화염에서 생성되는 배기가스가 재순환되는 질소산화물(NOx)을 최소화하는 연소기를 포함하는 열매체 보일러에 관한 것으로 단순한 구성으로써 주변 장치를 필요로 하지 않으면서 기본적인 연소시스템을 구현할 수 있 효과 및 소형의 분할 화염을 통한 열 분산과 화염온도 저하, 각 소형화염들의 최적화된 공연비 화염 형성 및 빠른 연소반응 유도를 통해 질소산화물(NOx)을 현저히 저감시킬 수 있는 효과가 있다.

System and method for reducing NOx emissions through smoke recycling

一种烟气再循环降低NOx排放的系统和方法,要解决用锅炉/加热炉烟气再循环技术降低NOx排放的技术问题,属锅炉降排技术领域。其特征在于：锅炉/加热炉烟道置有旁路循环烟气管；鼓风机的进风口置有空气‑烟气混合器，助燃空气进口和旁路循环烟气管分别通过空气/或循环烟气风门与所述混合器进口管道连接相通，空气风门和循环烟气风门与电动或者气动调节仪连接。由电动或者气动调节仪调节空气风门挡板/循环烟气风门挡板的开度，控制进入混合器中助燃空气与循环烟气量之间的配比，再由鼓风机输送混合气经过燃烧器后进入锅炉/加热炉燃烧。本发明结构简单、适用性强，降低NOx效果明显。

METHOD AND DEVICE FOR THERMAL PROCESSING

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2005 109 915 (13) A F 23 D 14/32 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2005109915/06, 25.09.2003 (71) Çà âèòåëü(è): ËÈÍÄÅ Àà (DE) (30) Ïðèîðèòåò: 25.09.2002 SE 0202836-3 (43) Äàòà ïóáëèêàöèè çà âêè: 10.10.2005 Áþë. ¹ 28 (86) Çà âêà PCT: SE 03/01492 (25.09.2003) (74) Ïàòåíòíûé ïîâåðåííûé: Ðûáàêîâ Âëàäèìèð Ìîèñååâè÷ Àäðåñ äë ïåðåïèñêè: 191186, Ñàíêò-Ïåòåðáóðã, à/ 230, "ÀÐÑÏÀÒÅÍÒ", ïàò.ïîâ. Â.Ì.Ðûáàêîâó, ðåã. ¹ 90 R U Ôîðìóëà èçîáðåòåíè 1. Ñïîñîá òåðìîîáðàáîòêè ìàòåðèàëîâ, ïðåäïî÷òèòåëüíî ìåòàëëîâ, âêëþ÷àþùèé ñëåäóþùèå ýòàïû: ïîëó÷åíèå è ïîääåðæèâàíèå ïëàìåíè ïóòåì ïîäà÷è ê ãîðåëêå òîïëèâà è êèñëîðîäîñîäåðæàùåãî ãàçà ñ ñîäåðæàíèåì êèñëîðîäà íà óðîâíå, ïî ìåíüøåé ìåðå, 80 îá.%, ïðè÷åì óêàçàííûé ãàç ïîäâîä ò ïðè ñêîðîñò õ íå ìåíåå 0,5 Ì, ãäå Ì - ÷èñëî Ìàõà, ñîçäàíèå ñìåñè êèñëîðîäà è ãîð ÷èõ âûáðîñîâ ðåöèðêóë öèåé âûáðîñîâ îò óêàçàííîãî ïëàìåíè ê êèñëîðîäîñîäåðæàùåìó ãàçó ïîñðåäñòâîì ýæåêòîðíîãî ýôôåêòà, ñìåøèâàíèå óêàçàííîé ñìåñè êèñëîðîä-âûáðîñû ñ òîïëèâîì è îáåñïå÷åíèå âòîðè÷íîé ðåöèðêóë öèè ïîñðåäñòâîì ðåöèðêóë öèè âûáðîñîâ îò óêàçàííîãî ïëàìåíè ê ñìåñè êèñëîðîäà è âûáðîñîâ ñ òîïëèâîì. 2. Ñïîñîá ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî ýòàï ïîëó÷åíè è ïîääåðæèâàíè ïëàìåíè âêëþ÷àåò â ñåá èíæåêòèðîâàíèå êèñëîðîäîñîäåðæàùåãî ãàçà, ïî ìåíüøåé ìåðå, â îäíî ñîïëî äë ôîðìèðîâàíè ñâîáîäíîé ñòðóè íà îòðåçêå, ñîñòàâë þùåì, ïî ìåíüøåé ìåðå, 15 äèàìåòðîâ ñîïëà. 3. Ñïîñîá ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî ýòàï ñîçäàíè ñìåñè êèñëîðîä-âûáðîñû âêëþ÷àåò â ñåá ñìåøèâàíèå êèñëîðîäîñîäåðæàùåãî ãàçà, ïî ìåíüøåé ìåðå, ñ øåñòèêðàòíûì îáúåìîì ãîð ÷èõ ãàçîîáðàçíûõ âûáðîñîâ. 4. Ñïîñîá ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî ýòàï ñîçäàíè ñìåñè êèñëîðîäà è âûáðîñîâ âêëþ÷àåò â ñåá ñìåøèâàíèå êèñëîðîäîñîäåðæàùåãî ãàçà è ãîð ÷èõ âûáðîñîâ íà îòðåçêå, ñîñòàâë þùåì, ïî ìåíüøåé ìåðå, 20 äèàìåòðîâ ñîïëà, çà ñ÷åò îáåñïå÷åíè âîçìîæíîñòè äë êèñëîðîäîñîäåðæàùåãî ãàçà ñîóäàð òüñ ñî ñòåíêàìè ...

Apparatus for head end direct air injection with enhanced mixing capabilities

本发明公开一种具有提高的混合能力的用于头端直接空气喷射的设备及方法，所述方法通过：将烃燃料和氧化剂成分送至燃烧室的头端中，同时还将大体惰性的气体连同燃料和氧化剂一起喷射到所述燃烧室中；形成与再循环流混合的燃烧室排气流；冷却所述燃烧室排气；检测所述排气中的一氧化碳和氧气的量，并且基于所述检测量来调节燃料、氧化剂和惰性气体的进料量。

Power plant that uses a membrane and method for operating the same

The invention relates to a power plant for generating electrical energy, comprising a combustion chamber (1) for producing steam, at least one waste gas purification stage (2) that is connected downstream, a separation stage for CO2 (3), a recycling circuit for the waste gas and a high-temperature O2 membrane (5) which is connected upstream of the combustion chamber. According to invention, the high-temperature O2 membrane has a supply inlet and an evacuation outlet on the feed side which are thermally coupled via a heat exchanger (6). The high-temperature O2 membrane has only one evacuation outlet on the permeate side that is connected to the combustion chamber and/or waste gas recycling circuit and said evacuation outlet is provided with cooling and/or compression means (8). The power plant, in which coal is burnt with the aid of practically pure oxygen and the combustion waste gas is purified and partially recycled to the combustion process, is operated according to the invention in such a way that the oxygen used is obtained by being isolated from air with the aid of a high-temperature O2 membrane. On the feed side said membrane is operated with atmospheric air at a pressure of up to 2 bar and on the permeate side a negative pressure of between 0.02 and 0.5 bar is applied.

Power plant that uses a membrane and method for operating the same

Provided is a power plant for generating electrical energy comprising a combustion chamber for producing steam, at least one downstream flue gas purification stage, a separation stage for CO 2 , a recycling circuit for the flue gas, and a high-temperature O 2 membrane, which is connected upstream of the combustion chamber. The high-temperature O 2 membrane has an inlet and an outlet on the feed side which are thermally coupled by way of a heat exchanger. On the permeate side, the high-temperature O 2 membrane has only an outlet which is connected to the combustion chamber and/or the flue gas recycling circuit and a means for cooling and/or compression which is disposed in this outlet. The power plant, in which coal is burned using substantially pure oxygen, and in which the combustion waste gas is purified and partially recirculated to the combustion process, is operated in such a way that the oxygen that is used is obtained by separation from air using a high-temperature O 2 membrane, wherein the membrane is operated with atmospheric air at a pressure of up to 2 bar on the feed side and a negative pressure of between 0.02 and 0.5 bar is applied on the permeate side.

Method and system for controlling the products of combustion

System and method of managing energy utilized in a flue gas processing system

A method is provided for managing an amount of energy utilized by a carbon dioxide capture system. The method includes providing a fuel and a feed stream to a combustion system. The feed stream includes oxygen and a portion of a flue gas stream generated upon combustion of the fuel. The method also includes subjecting the flue gas stream to a carbon dioxide capture system to remove carbon dioxide therefrom, measuring a concentration of oxygen present in the feed stream, and selectively adjusting an amount of the flue gas stream included in the feed stream based on the measured concentration of oxygen in the feed stream. The selective adjustment is performed such that the feed stream maintains an oxygen concentration in a range of between about 10% to 90% by volume and the carbon dioxide capture system operates at an energy load between 1.4 GJ/ton of carbon dioxide and 3.0 GJ/ton of carbon dioxide.

System and method of managing energy utilized in a flue gas processing system

提供一种用于管理二氧化碳捕捉系统所利用的能量的量的方法。该方法包括对燃烧系统提供燃料和进料流。进料流包括氧和在燃料燃烧之后产生的烟道气流的一部分。方法还包括：使烟道气流经过二氧化碳捕捉系统，以从中移除二氧化碳；测量存在于进料流中的氧的浓度；以及基于进料流中的氧的测量浓度而选择性地调节包括在进料流中的烟道气流的量。执行选择性调节，使得进料流保持在介于大约10体积%至90体积%之间的范围中的氧浓度，并且二氧化碳捕捉系统在1.4千兆焦/吨二氧化碳和3.0千兆焦/吨二氧化碳之间的能量负荷下运行。

Process for carbon dioxide gas separation from combustion gases

Method and system for controlling combustion products

Fuel dilution methods and apparatus for nox reduction

Methods and apparatus for reducing the content of nitrogen oxides in the flue gases produced by the combustion of fuel gas and combustion air introduced into a burner connected to a furnace are provided. The methods basically comprise the steps of conducting the combustion air to the burner, providing a chamber outside of the burner and furnace for mixing flue gases from the furnace with the fuel gas, discharging the fuel gas in the form of a fuel jet into the mixing chamber so that flue gases from the furnace are drawn into the chamber and mixed with and dilute the fuel gas therein and conducting the resulting mixture of flue gases and fuel gas to the burner wherein the mixture is combined with the combustion air and burned in the furnace.

METHOD FOR CORRECTING COMBUSTION SETTINGS OF A COMBUSTION CHAMBER ASSEMBLY AND INSTALLATION USING THE METHOD

Method for obtaining ultra-low nox emissions from gas turbines operating at high turbine inlet temperatures

A method of combustion comprising providing fuel (13) to a turbine combustor (14), supplying air (21) to form a fuel/air mixture having an equivalence ratio greater than 0.55 supplying cooled combustion gases (37) and mixing with the air such that the mixture oxygen is less than 18 %, and supplying the mixture to the combustor (14).

COMBUSTION METHOD AND INSTALLATION WITH OPTIMIZED ENERGY RECOVERY

PROCESS AND PLANT FOR PRODUCING FUEL GASES FROM GASES FROM THE THERMAL CONVERSION OF A SOLID LOAD

La présente invention conceme un procédé de production de gaz combustibles comprenant une étape de conversion thermique en absence d'air d'une charge solide, telle qu'une pyrolyse ou une thermolyse, générant des résidus solides et des gaz bruts, une combustion desdits résidus solides produisant des gaz de combustion, et un craquage thermique des gaz bruts pour produire des gaz combustibles. Selon l'invention, on utilise tout ou partie des gaz de combustion pour alimenter en énergie thermique l'opération de craquage thermique des gaz bruts. The present invention relates to a process for producing combustible gases comprising a step of thermal conversion in the absence of air of a solid charge, such as pyrolysis or thermolysis, generating solid residues and raw gases, combustion of said residues solids producing combustion gases, and thermal cracking of the raw gases to produce combustible gases. According to the invention, all or part of the combustion gases are used to supply thermal energy to the thermal cracking operation of the raw gases.

BOILER INCLUDING A HOT GAS GENERATOR FOR LIQUID OR GASEOUS FUELS

Chaudière comprenant un générateur de gaz chaud constitué par une partie comportant une chambre de combustion, ainsi que par un ventilateur pour l'amenée d'air comburant dans la partie à chambre de combustion. Un canal de fumées 5 conduisant à la voie de sortie de fumées 6 de la chaudière se trouve, à son extrémité d'entrée communiquant avec le foyer 1, en communication avec la tubulure d'aspiration d'air du ventilateur 15 afin de ramener une quantité réglable de gaz d'échappement dans la partie à chambre de combustion 8, le canal de fumée 5 étant équipé de manière à opposer à l'écoulement des gaz d'échappement une résistance supérieure à la force d'aspiration de la cheminée. L'invention est applicable notamment à des chaudières de chauffage central. Boiler comprising a hot gas generator consisting of a part comprising a combustion chamber, as well as a fan for supplying combustion air into the combustion chamber part. A flue gas channel 5 leading to the flue gas outlet 6 of the boiler is, at its inlet end communicating with the fireplace 1, in communication with the air suction pipe of the fan 15 in order to bring back a adjustable amount of exhaust gas in the combustion chamber part 8, the smoke channel 5 being equipped so as to resist the flow of exhaust gases with a greater resistance than the suction force of the chimney. The invention is particularly applicable to central heating boilers.

Method and apparatus for low nox combustion of gaseous fuels

A method and apparatus for low NOX combus-tion of natural gas in a compact steam boiler having output steam delivery controlled by predetermined outlet steam pressure. The compact boiler employs a small high heat release combustor discharging into a forced draft convective heat exchange section. In operation, the compact boiler is completely and auto-matically self-operating, employing flue gas recircu-lation (FGR) wherein the FGR is admitted into the burner combustion air through a valve controlled by boiler flue gas NOX content. A novel bell mouthed flue gas scoop is utilized in the boiler stack up-stream of the NOX sensor. In an alternate combustion chamber design, a cylindrical water wall coil sur-rounds the combustion process, increasing boiler effi-ciency through the inherent large temperature differ-ence between the coil and the combustion in process, along with reducing the combustion temperature and further reducing the NOX content of combustion prod-ucts. A further variation in the combustion system utilizes a ceramic shield surrounding a natural gas burner as it fires into the compact combustion cham-ber. Primary and secondary combustion air are admit-ted to the combustion chamber through first stage combustion internal of the shell and second stage combustion occurring internal of the boiler combustion chamber.

COMBUSTION METHOD AND INSTALLATION WITH OPTIMIZED ENERGY RECOVERY

Procédé et installation de combustion dans lesquels un comburant riche en oxygène (43) est préchauffé par échange thermique avec un fluide caloporteur (23), en amont de la chambre de combustion (100), dans lesquels on chauffe un gaz auxiliaire (21) par échange thermique avec une première partie des fumées chaudes (11) évacuées de la chambre (100), et dans lesquels le fluide caloporteur (23)comporte un mélange d'au moins une partie du gaz auxiliaire chauffé (22) avec une partie (13) des fumées chaudes. Process and combustion plant in which an oxygen-rich oxidant (43) is preheated by heat exchange with a coolant (23), upstream of the combustion chamber (100), in which an auxiliary gas (21) is heated by heat exchange with a first portion of the hot fumes (11) discharged from the chamber (100), and wherein the coolant (23) comprises a mixture of at least a portion of the heated auxiliary gas (22) with a portion (13) ) hot fumes.

Anti-pollution system for furnaces and fireplaces recirculates unburnt gases with fresh air and atomised water

The anti-pollution system has a T-shaped three-way pipe (5, 6, 7) with its shortest end (5) connected to the furnace or fireplace (1) to receive fumes and unburnt gases. The longer, upper end (6) of the pipe is open to take in fresh air, and its lower end (7) is connected to a suction/blower unit (2) with an atomiser nozzle (4) delivering water from a container (3). The fumes and unburnt gases, mixed with fresh air and atomised water with optional additives, are fed back into the furnace or fireplace through an outlet (10) just above its flame (12) and burned at a high temperature assisted by oxygen and hydrogen formed by the breakdown of the water droplets.

IMPROVEMENTS ON LOW-EMITTING AND LOW-EMITTING NITROGEN OXIDES BURNER

Oxygen and/or fuel gas injection involves using a lance in which at least a part of the oxygen or fuel gas is mixed with the combustion products or fumes from the furnace before it is injected

Oxygen or fuel gas is injected into a furnace by means of a lance in which at least a part of the oxygen or fuel gas is mixed with the combustion products or fumes from the furnace before it is injected. Independent claims are also included for: (a) a device for the injection of oxygen or gas into a furnace; (b) a device for the combustion of oxygen and fuel incorporating a burner and such a device for injecting oxygen and/or fuel gas.

Power station

发电厂包括燃气涡轮机组(1)，所述燃气涡轮机组(1)的废气(8)穿过蒸汽轮机组(10)的锅炉(9)，然后进给到分流器(11)中，所述废气(8)在分流器(11)分成再循环流(12)和排出流(13)，其中，所述再循环流(12)进给到混合器(16)中，与新鲜空气(7)一起形成混合物(6)，所述混合物(6)进给到燃气涡轮机组(1)的压缩机(2)入口。设置用于所述压缩机入口处的混合物氧气含量的监视系统。所述监视系统包括再循环流质量流量传感器(30)、再循环流氧气浓度传感器(31)、混合物质量流量的传感器(32)、控制单元(35)，所述控制单元(35)布置成处理由所述至少再循环流质量流量传感器(30)、再循环流氧气浓度传感器(31)和混合物质量流量的传感器(32)所探测的信息段，得到所述压缩机入口上游的氧气浓度。

Burner with combustion air-driven injection pump

本文描述了使用具有燃烧空气驱动的喷射泵的燃烧器的设备、方法和系统。一种燃烧器装置包括位于燃烧器壳体内的喷射泵，所述喷射泵具有接收燃烧空气的燃烧空气进口、用以从所述燃烧空气进口接收所述燃烧空气的腔室、和渐缩至出口的所述腔室的渐缩部，所述出口具有比所述进口的直径更小的直径。

Process and apparatus for producing fuel gas from gas generated by thermal decomposition of a solid additive

Fuel dilution methods and apparatus for nox reduction

Methods and apparatus for reducing the content of nitrogen oxides in the flue gases produced by the combustion of fuel gas and combustion air introduced into a burner connected to a furnace are provided. The methods basically comprise the steps of conducting the combustion air to the burner, providing a chamber outside of the burner and furnace for mixing flue gases from the furnace with the fuel gas, discharging the fuel gas in the form of a fuel jet into the mixing chamber so that flue gases from the furnace are drawn into the chamber and mixed with and dilute the fuel gas therein and conducting the resulting mixture of flue gases and fuel gas to the burner wherein the mixture is combined with the combustion air and burned in the furnace.

Water heater

A water heater comprising a water-tight tank having a combustion chamber located in the bottom portion of the tank. A combustion air inlet tube extends from the top of the water heater through the interior of the tank to a chamber at the bottom of the water tank to carry combustion air thereto. A combustion air blower is operable to draw the preheated combustion air into the air inlet tube and then into the combustion chamber. Combustion air entering the combustion chamber supports combustion of gas emanating from burners positioned in the combustion chamber. The products of combustion (flue gases) are drawn upwardly through a plurality of tubes, which extend from the combustion chamber to a flue gas collector box on the top of the water heater. From the flue gas collector box, the flue gases flow into an air/flue product mixing chamber and then out through an exit port.

A furnace system with internal flue gas recirculation

A furnace system (10) including a combustion vessel (12) having an outlet end (19) and at least one aperture (20, 22) extending into an interior area (14) defined by the combustion vessel. The furnace system (10) includes a flue duct (42) coupled to the outlet end (19) and in fluid communication with the interior area. A recirculation duct (55) extends from the flue duct (42) to one or more of the apertures (20, 22) and provides fluid communication between the flue duct (42) and the interior area (14).

Fluid fuel fired burner

ABSTRACT OF THE DISCLOSURE The flame temperature of a fluid fuel fired burner is reduced by mixing flue gas with the combustion air supply before introduction of the fuel and combustion take place. The NOX produced by the process of combustion is thereby reduced. The flue gas may also be induced from the furnace remote from the flame zone of the burner such that the flame is not disturbed. A venturi may be used to induce the flue gas from the furnace.

Combustion method and apparatus for nox reduction

Combustion method and apparatus for NO x reduction and CO reduction which are capable of easily achieving super NO x reduction with the value of exhaust NO x under 10 ppm. The combustion method for NO x reduction by controlling the temperature of combustion gas derived from a burner includes in combination the steps of suppressing combustion gas temperature by heat absorbers; suppressing the combustion gas temperature by recirculating burning-completed gas to a combustion-gas burning reaction zone; and suppressing the combustion gas temperature by adding water or steam to combustion-use air of the burner, whereby the temperature of the combustion gas derived from the burner is suppressed.

Combustion gas supply system

燃燒氣體供給系統(1)具有：空氣壓縮機(3)；和燃料供給裝置(5)；和燃燒器(7)，是使燃料供給裝置所供給之燃料及壓縮空氣燃燒並產生加壓燃燒氣體；和氣體供給回收部(9)，是將加壓燃燒氣體供給到熱量消耗裝置，且將熱量已被消耗之加壓燃燒氣體回收作為使用完畢氣體；和再加壓壓縮機(11)，是將所回收的使用完畢氣體的一部分作補強壓縮並供給至壓縮空氣。再加壓壓縮機，是將使用完畢氣體施加與壓縮空氣相同壓力作再利用，而使用完畢氣體的剩餘部分則排到外部。

Water-tube boiler

The water-tube boiler fulfills the reduction in NO x with a simple constitution, and achieves reduction in NO x and reduction in CO at the same time with a simple constitution. In the water-tube boiler, a plurality of water tubes (5) are arranged in a zone where burning-reaction ongoing gas derived from a burner (10) is present within a combustion chamber (9), and exhaust gas re-circulation equipment (26) is provided to feed part of exhaust gas exhausted from the combustion chamber 9 to the burner 10.

Method and apparatus for the improved combustion of biomass fuels

A cylindrical furnace having a vertical axis advantageously controls the combustion. Solid fuel, particulates, and gases are present inside the furnace and rotate around the axis of the cylinder to induce the solid particles and gases to stratify radially due to centrifugal force. Fuel and particulates at the perimeter slip in and out of suspension as they drag on the wall of the cylinder. This increases the residence time of the particles in the furnace. The solid particles are composed of combustible fuel particles, non-combustible ash, and non-combustible contaminants that enter with the fuel. It is necessary to control the temperature of the non-combustible particles and the wall surface to prevent non-combustible particles from adhering to and building up on the furnace wall. It is also advantageous to control the gas temperature leaving the furnace to minimize temperature driven corrosion of downstream heat exchanging surfaces. Method and apparatuses are described to control the gas, non-combustible particle, and wall temperatures within the cylindrical furnace. The furnace can be integrated into a stand-alone boiler or as a combustor in which a portion of the pyrolysis gas from the combusting fuel is burned in a separate vessel.

Lime or dolomite calcination process and annular upright furnace implemented

Procédé de calcination dans un four droit annulaire comprenant une alimentation en matière à calciner au haut d’un espace annulaire (3) du four dans lequel elle descend, une introduction en 5 de premières et en 6 de secondes fumées de combustion dans cet espace annulaire, une évacuation au haut du four en 12 d’un courant gazeux supérieur, un prélèvement en 18 d’une partie du courant gazeux supérieur, une formation d’un premier mélange comburant par mélange de cette partie de courant gazeux supérieur avec du dioxygène pur (19), et, pour former lesdites secondes fumées de combustion, une combustion d’un combustible dans ce premier mélange comburant, ainsi qu’une élimination en 20 d’un courant gazeux inférieur contenant l’air de refroidissement de produit, après ce refroidissement. Method of calcination in an annular upright furnace comprising a supply of material to be calcined at the top of an annular space (3) of the furnace in which it descends, an introduction in 5 of first and in 6 of second combustion fumes into this annular space , an evacuation at the top of the furnace at 12 of an upper gas stream, a withdrawal at 18 of a part of the upper gas stream, formation of a first oxidizing mixture by mixing this part of the upper gas stream with pure dioxygen (19), and, to form said second combustion fumes, combustion of a fuel in said first oxidizer mixture, as well as removal at 20 of a lower gas stream containing product cooling air, after this cooling.

Plant and method for dry extracting / cooling heavy ashes and for controlling the combustion of high unburnt content residues

The present invention relates to a system for dry extracting / cooling heavy ashes and for controlling the combustion of high unburnt content residues, allowing to: extract heavy ash from the boiler bottom (12), foster and adjust post-combustion on the extractor belt (14) by combined use of comburent hot air and inert combustion fumes, already available in boiler, cool the ashes present on the belt and optionally re- circulating them - all or in part - in boiler, along with the fraction of light ashes of higher unburnt content.

Burner, furnace, and steam cracking processes using the same

A burner sub-system, a furnace comprising the same, a fuel combustion process and steam cracking process carried out in the furnace. The burner sub-system comprises a barrier wall segment (60) between the burner tip (20) and the flue-gas recirculation ("FGR") duct (40), effectively blocking direct gas flow between the burner tip and the FGR duct opening, but without encircling the whole burner tip. The presence of the partial barrier wall has the advantage of preventing the temperature inside the FGR duct from becoming too high, while achieving low NOx emissions from the combustion process without overheating the burner tip because of reduced amount of heat reflection to the burner tip compared to an annular barrier wall. The invention is particularly useful in furnaces where hydrogen-rich fuel gas is combusted.

Patent JPS4883212A

System and method of managing energy utilized in a flue gas processing system

A method is provided for managing an amount of energy utilized by a carbon dioxide capture system. The method includes providing a fuel and a feed stream to a combustion system. The feed stream includes oxygen and a portion of a flue gas stream generated upon combustion of the fuel. The method also includes subjecting the flue gas stream to a carbon dioxide capture system to remove carbon dioxide therefrom, measuring a concentration of oxygen present in the feed stream, and selectively adjusting an amount of the flue gas stream included in the feed stream based on the measured concentration of oxygen in the feed stream. The selective adjustment is performed such that the feed stream maintains an oxygen concentration in a range of between about 10% to 90% by volume and the carbon dioxide capture system operates at an energy load between 1.4 GJ/ton of carbon dioxide and 3.0 GJ/ton of carbon dioxide.

Methods and systems for controlling the products of combustion

The present invention relates to methods and systems for controlling a combustion reaction and the products there-of. One embodiment includes a combustion control system having an oxygenation stream substantially comprising oxygen and CO2 and having an oxygen to CO2 ratio, then mixing the oxygenation stream with a combustion fuel stream and combusting in a combustor to generate a combustion products stream having a temperature and a composition detected by a temperature sensor and an oxygen analyzer, respectively, the data from which are used to control the flow and composition of the oxygenation and combustion fuel streams. The system may also include a gas turbine with an expander and having a load and a load controller in a feedback arrangement.

Method and apparatus for controlling combustion in oxygen fired boiler

Provided are a method and an apparatus for controlling combustion in an oxygen fired boiler which are easily applicable to an existing air fired boiler for easy and stable control of the combustion. Oxygen with a setting amount in accordance with a boiler load demand 35 is supplied to a boiler body 4 . Heat absorption amount of the boiler is measured from inlet temperature of feedwater supplied to the boiler body 4 and outlet temperature of steam. Recirculation flow rate of combustion exhaust gas 14 a is controlled such that heat absorption amount 41 of the boiler body 4 becomes equal to a targeted heat absorption amount 42 to thereby control oxygen concentration in all gas guided to the boiler body 4.

A kind of condensation prevention system and method for flue gas outer circulation combustion apparatus

本发明涉及一种烟气外循环燃烧设备的防冷凝系统，其包括主燃烧设备用于烟气外循环的回流烟道、吸入空气的新风道以及混合回流烟气、空气的混风器，混风器经过混合风道与主燃烧设备连接，其还包括对进入主燃烧设备的助燃风进行加热的预加热设备。本发明还涉及一种烟气外循环燃烧设备的防冷凝方法。本发明解决了目前利用烟气外循环技术的燃烧系统普遍存在因烟气温度降低产生冷凝，造成主燃烧器和鼓风机潮湿或积水，带来电器短路、腐蚀等不良后果，对主燃烧器和鼓风机的正常工作造成影响，甚至损坏燃烧器的问题；确保燃烧设备及烟气外循环系统的运行稳定可靠。

Pure oxygen circulating fluidized bed boiler

본 발명은 연소반응이 일어나는 연소부 및, 상기 연소부 외부에서 상기 연소부의 하단과 측면으로 설정된 산소의 양이 유입되도록, 길이방향으로 설정된 개구 면적을 형성하는 복수개의 관통홀을 통해 유출되는 산소를 상기 연소부의 측면 및 하단에 공급하는 산소 분배부를 포함하여 구성되는 순산소 순환 유동층 보일러에 관한 것이다. 이와 같은 본 발명의 일실시예에 의하면, 연소부의 측면에 다단으로 주입되는 산소의 농도를 각각 조절할 수 있는 효과를 제공한다. The present invention provides a combustion portion in which a combustion reaction takes place, and oxygen flowing out through a plurality of through holes forming an opening area set in a longitudinal direction so that an amount of oxygen set to the bottom and sides of the combustion portion flows from outside the combustion portion. It relates to a pure oxygen circulating fluidized bed boiler comprising an oxygen distribution unit supplied to the side and the bottom of the combustion unit. According to one embodiment of the present invention as described above, it provides the effect of adjusting the concentration of oxygen injected in multiple stages to the side of the combustion unit, respectively.