摘要:
A fluidized bed gasification system which comprises a fluidized bed gasification reactor having a bottom ash discharge outlet below the reactor, wherein an L- valve is used to control the rate of bottom ash discharge. The L- valve uses an aeration port located on distal side of the L- valve vertical pipe at a location that is above the center line of the horizontal pipe. Also provided are methods of controlling the bottom ash discharge as well the fluidized reaction bed height of the system.
摘要:
The subject matter provides a gasifier, a method of manufacturing a gasifier, a controller for the gasifier and a method for manufacturing the controller. The gasifier includes a reactor, a feeder, an extractor, and an outlet, each of the feeder, the extractor, and the outlet is coupled to the reactor and the reactor is configured to generate fuel-gas from base-fuel. Gasifier includes a sensor unit provided in the reactor and a controller. The controller is configured to receive: a first signal; a second signal; and a sensor-signal. The first signal being indicative of rate of fuel-gas extraction; the second signal being indicative of physical parameter of base-fuel, and the sensor-signal is received from the sensor unit. The controller is configured to generate a thermodynamic indicator based on the first signal and the second signal and monitor the sensor-signal and trigger at least one of the feeder, the extractor and the outlet according to the thermodynamic indicator and the sensor-signal.
摘要:
A carbon capture enabled system and method for generating electric power and/or fuel from methane containing sources using oxygen transport membranes by first converting the methane containing feed gas into a high pressure synthesis gas. Then, in one configuration the synthesis gas is combusted in oxy-combustion mode in oxygen transport membranes based boiler reactor operating at a pressure at least twice that of ambient pressure and the heat generated heats steam in thermally coupled steam generation tubes within the boiler reactor; the steam is expanded in steam turbine to generate power; and the carbon dioxide rich effluent leaving the boiler reactor is processed to isolate carbon. In another configuration the synthesis gas is further treated in a gas conditioning system configured for carbon capture in a pre-combustion mode using water gas shift reactors and acid gas removal units to produce hydrogen or hydrogen-rich fuel gas that fuels an integrated gas turbine and steam turbine system to generate power. The disclosed method and system can also be adapted to integrate with coal gasification systems to produce power from both coal and methane containing sources with greater than 90% carbon isolation.
摘要:
A hydrogen production process and production plant (10) operable to produce, at least, Hydrogen and Carbon dioxide, the process comprises a recycle loop, wherein tail gas (100, 200, 300) produced downstream in the process is used upstream of the process at a shift reactor and at least one of providing heat for drying coal (18) and providing heat for regenerating CO 2 (22).
摘要:
A process for pyrolyzing coal using a recycled hydrogen donor includes introducing a coal feed to a pyrolysis zone and heating the coal feed to a temperature of 300°C in the absence of hydrogen. A hydrogen donor solvent is introduced to the pyrolysis zone after the coal feed is heated to 300°C, and the temperature of the coal feed and the hydrogen donor solvent is increased to 475°C, while increasing a pressure in the pyrolysis zone to at or above a vapor pressure of the hydrogen donor solvent. At least an aromatic hydrocarbon rich fraction is separated from the coal tar stream and hydrogenated. The hydrogenated aromatic hydrocarbon rich fraction is recycled to the pyrolysis zone as the hydrogen donor solvent.
摘要:
An integrated process for the partial oxidation of whole crude oil mixed with a low cost finely divided solid ash-producing material in a membrane wall gasification reactor produces a syngas and, optionally, a more hydrogen-rich product stream by subjecting the syngas to a water-gas shift reaction. Process steam and electricity are produced by recovering the sensible heat values from the hot syngas.
摘要:
Изобретение относится к производству электрической энергии и получению H 2 с использованием углеродсодержащего топлива в топливных элементах. Задачей настоящего изобретения является повышение эффективности использования углеродсодержащего топлива в системе, содержащей высокотемпературный топливный элемент, повышение надежности и срока службы высокотемпературного топливного элемента. Поставленная задача решается предложенным способом использования углеродсодержащего топлива в системе, содержащей высокотемпературный топливный элемент, включающем помещение в конвертор углеродсодержащего топлива и конвертирующего реагента, проведение в конверторе эндотермической реакции углеродсодержащего топлива с конвертирующим реагентом, получение смеси CO и H 2 в конверторе, подачу части смеси (CO и H 2 ) и окислителя соответственно к аноду и катоду высокотемпературного топливного элемента, который является частью высокотемпературной окислительной системы, окисление поданной части смеси в высокотемпературной окислительной системе с генерацией электрической и тепловой энергии, передачу генерируемой в высокотемпературной окислительной системе тепловой энергии в конвертор, поддержание в конверторе температуры в заданных пределах, выбранных в диапазоне 800-1300К, причем из указанной смеси CO и H 2 , образуемой в конверторе, извлекают часть H 2 и уменьшают его количество, подаваемое в высокотемпературную окислительную систему так, чтобы количество тепла, выделяемого в высокотемпературной окислительной системе при протекании реакций окисления CO и H 2 было по меньшей мере достаточно для поддержания заданной температуры в конверторе, a H 2 , высвобожденный из разделительной системы, подают в систему утилизации водорода.