Abstract:
A process for the integration of power generation and an SMR1 including introducing a combustion air stream into a compressor, thereby producing a compressed air stream. The compressed air stream is then introduced, along with a combustor feed gas stream into a first combustor, thereby producing a first exhaust gas stream. The first exhaust gas stream is then introduced into the shell-side of an SMR, thereby providing the heat for the reforming reaction, and generating a syngas stream and a second exhaust gas stream. The second exhaust gas stream is introduced, along with a secondary fuel stream, into a second combustor, thereby producing a third exhaust gas stream. The third exhaust gas stream is then introduced into an expander, thereby producing power output and a fourth exhaust gas stream.
Abstract:
Methods and systems for a gasifier system are provided. The gasifier system includes a gasifier including a syngas cooler configured to transfer heat from a reaction zone of the gasifier to a flow of fluid through the syngas cooler, a reaction vessel coupled in flow communication with the syngas cooler wherein the reaction vessel is adapted to receive the flow of fluid and generate heat in an exothermic shift reaction. The system also includes a heat exchanger coupled in flow communication with the reaction vessel, the heat exchanger adapted to produce relatively high pressure steam using the generated heat.
Abstract:
The present invention is concerned with a power generation process and system (10) comprising gasifying (12) a carbonaceous fuel source to yield a synthesis gas (17); cooling the synthesis gas; removing carbon dioxide from die cooled synthesis gas (18), leaving a combustible gas suitable (19) for power generation; compressing (20) the removed carbon dioxide for storage or sequestration; and utilising at least some of the compressed carbon dioxide for the cooling step. A system for implementing the above process, including a suitable valve arrangement, is also provided.
Abstract:
A crude gas cooling system (1) for a fuel gasification plant by means of which crude gas can be produced as the product of gasification of a fuel comprises a first steam generator (4), a second steam generator (8) and a first heat exchange unit (12) which are connected in series or in parallel and through which the crude gas can flow one after the other. The second steam generator (8) is arranged downstream of the first steam generator (4) and is adapted to generate steam the pressure level of which is lower than the steam that can be generated by the first steam generator (4). The first heat exchange unit (12) is arranged downstream of the second steam generator and is adapted to heat a process fluid in a process fluid circuit (14). A fuel gasification plant for a combined cycle power plant by means of which crude gas can be produced as the product of gasification comprises a crude gas cooling system (1). The combined cycle power plant comprises the fuel supply plant according to the invention.
Abstract:
A method of conducting a process involving the generation of steam (24; 58; 104; 170; 198; 222; 259) in which a hot process stream (16; "A"; 92; 152; 184; 204; 246) is generated. The hot process stream (16; "A"; 92; 152; 184; 204; 246) can be generated in any manner and can include a burner section of a steam methane reformer (2), a gas turbine of an integrated combined cycle (3), a combustion chamber used to pre-heat incoming air and oxygen for a blast furnace (140), an oxygen transport membrane system (180), and a gas turbine (202) or natural gas engine that is provided to compress air in a cryogenic air separation unit (228; 240).
Abstract:
There is described a method of recovering energy and/or combustible gas by thermally gasifying fuel during its partial combustion, wherein the fuel and an oxygen-containing gas are delivered to a reactor (1) and caused to circulate in a closed circuit of reactants and reaction products during partial combustion of the fuel. Circulation is effected by virtue of the fact that the reactor (1) is configured as an ejector (9) at the location of the oxygen-containing gas inlet (8), so that the gas delivered to the reactor will function to drive reactants and reaction products around the closed circuit. The invention also relates to a reactor for carrying out the inventive method.
Abstract:
A method and configuration suited to feeding a water-containing fuel such as peat or brown coal into a pressurized space such as a pressurized dryer (2) or a high-pressure gasifier. A fuel with a high moisture content requires drying in a dryer (2) prior to gasification or combustion. In the dryer the fuel dewatered, whereby the separated water is discharged as steam from the dryer. The generated steam is separated from the fuel flow exiting the dryer (2) and it can be routed as injection steam to a gas turbine (14). When a portion (21) of the steam extracted from the fuel flow exiting the dryer (2) is fed into the fuel entering the dryer (2) or to a heat exchanger (25), which is employed for heating the fuel flow, a fuel of higher moisture content can be fed into the dryer (2), or alternatively, the moisture content of the fuel can be increased to improve the feed of the fuel. The method imparts no reduction of the economy of the energy generation process.
Abstract:
Electrical energy is produced from solid fuels in an ACFBC steam generator with two gas turbines and a steam turbine. The fuel is pyrolyzed in a fluid pyrolysis bed (34) with a hot partial flow of the bed material from the ACFBC steam generator (30), which together with the formed pyro coke is returned to the generator (30) as a fuel. The formed pyro gas (35) is combusted in one of said gas turbines (10), the exhaust gas (16) from which is used for steam generation (17). The other gas turbine (20) is operated with compressed air from its high pressure compressor (22) partially heated in a heat exchanger (51) in a fluid bed (50) with a controlled partial flow of hot bed material from said generator (30). The compressed air is finally heated by burning (24) fuel directly therein, and the exhaust gas from the power turbine part (22) is used as combustion air in the generator (30) which produces super heated high pressure steam for the steam turbine (40).
Abstract:
The present disclosure provides a method for generating higher hydrocarbon(s) from a stream comprising compounds with two or more carbon atoms (C 2+ ), comprising introducing methane and an oxidant (e.g., O 2 ) into an oxidative coupling of methane (OCM) reactor that has been retrofitted into a system comprising an ethylene-to-liquids (ETL) reactor. The OCM reactor reacts the methane with the oxidant to generate a first product stream comprising the C 2+ compounds. The first product stream can then be directed to a pressure swing adsorption (PSA) unit that recovers at least a portion of the C 2+ compounds from the first product stream to yield a second product stream comprising the at least the portion of the C 2+ compounds. The second product stream can then be directed to the ETL reactor. The higher hydrocarbon(s) can then be generated from the at least the portion of the C 2+ compounds in the ETL reactor.