摘要:
A method of and an apparatus for gasifying carbonaceous material, the apparatus including a gasification reactor, to which oxygen-containing primary gas and secondary gasification gas are introduced, whereby a portion of the material to be gasified is gasified to product gas, residual carbon contained in the fly ash extracted from the product gas is combusted in a cyclone combustor, and the exhaust gas from the cyclone combustor is guided to above the bottom level of the gasification reactor to act as secondary gasification gas.
摘要:
A process and apparatus for producing a synthesis gas for use as a gaseous fuel or as feed into a Fischer-Tropsch reactor to produce a liquid fuel in a substantially self-sustaining process. A slurry of particles of carbonaceous material in water, and hydrogen from an internal source, are fed into a hydro-gasification reactor under conditions whereby methane rich producer gases are generated and fed into a steam pyrolytic reformer under conditions whereby synthesis gas comprising hydrogen and carbon monoxide are generated. A portion of the hydrogen generated by the steam pyrolytic reformer is fed through a hydrogen purification filter into the hydro-gasification reactor, the hydrogen therefrom constituting the hydrogen from an internal source. The remaining synthesis gas generated by the steam pyrolytic reformer is either used as fuel for a gaseous fueled engine to produce electricity and/or process heat or is fed into a Fischer-Tropsch or similar reactor under conditions whereby a liquid fuel is produced.
摘要:
Method and apparatus for producing synthesis gas comprising the steps of combusting (4) a combustible gas to form hot flue gasses (7), passing the flue gasses (7) through heat storing means (1) so as to heat the heat storing means (1) to an elevated temperature, using the heat thus stored to heat biomass (2) to an elevated temperature so as to form synthesis gas, and withdrawing at least part of the synthesis gas formed, wherein following heating of the heat storing means (1) gaseous medium is circulated through the heat storing means (1), the biomass (2) and back to the heat storing means (1). Furthermore computer program product for performing the method of the invention and the use of the produced biogas are disclosed.
摘要:
A process and apparatus for producing a synthesis gas for use as a gaseous fuel or as feed into a fischer-Tropsch reactor to produce a liquid fuel in a substantially self-sustaining process. A slurry of particles of carbonaceous material in water, and hydrogen from an internal source, are fed into a hydro-gasification reactor under conditions whereby methane rich producer gases are generated and fed into a steam pyrolytic reformer under conditions whereby synthesis gas comprising hydrogen and carbon monoxide are generated. A portion of the hydrogen generated by the steam pyrolytic reformer is fed through a hydrogen purification filter into the hydro-gasification reactor, the hydrogen therefrom constituting the hydrogen from an internal source. The remaining synthesis gas generated by the steam pyrolytic reformer is either used as fuel for a gaseous fueled engine to produce electricity and/or process heat or is fed into a Fischer-Tropsch reactor under conditions whereby a liquid fuel is produced. Molten salt loops are used to transfer heat from the hydro-gasification reactor, and Fischer-Tropsch reactor if liquid fuel is produced, to the steam generator and the steam pyrolytic reformer.
摘要:
A biomass gasification system and operating method thereof are able to prevent hindrances caused by the tar component in a fuel gas and to thermally utilize a fuel gas containing a tar component. A gas reforming tower, able to thermally crack the tar component in a fuel gas by increasing the temperature thereof to a process temperature, is connected to a gas supply system, which routes a biomass-source fuel gas generated by a gasification furnace, to a utilization system. Fuel gas from the gas reforming tower is routed through a fuel gas induction system to the gasification furnace for use as fuel therein during the time required for the gas reforming tower to attain the process temperature.
摘要:
A gasifier system and process comprises a pulse combustion device in communication with a fluid channel for producing a gas stream having heat or fuel value. The pulse combustion device is operated under sub-stoichiometric conditions such that combustion and steam reforming both occur in the fluid channel. The pulse combustion device also produces a pulsating combustion product stream and an acoustic pressure wave. The acoustic pressure wave serves to cause agglomeration of particles contained within the combustion stream for easy removal. In one embodiment, a sulfur capturing agent is injected into the fluid channel for not only removing sulfur from the combustion product stream but for also facilitating particle agglomeration. Ultimately, a gas stream containing hydrogen is produced that may be used in various processes, such as in the production of electricity.
摘要:
A gasifying apparatus comprises a gasifier, a reformer and a heating device. The gasifier produces a thermal decomposed gas with use of a thermal decomposition reaction of a liquid or solid fuel such as waste or coal, and the heating device heats a low-temperature steam and air so as to be a high-temperature steam and air, which have a temperature equal to or higher than 700 deg. C. The gasifying apparatus has feeding means including fluid passages for feeding the high-temperature steam and air to the gasifier and the reformer. In a thermal decomposition area of the gasifier, the liquid or solid fuel is thermally decomposed to produce the thermal decomposed gas with sensible heat of the high-temperature steam and air and with the heat generated by an exothermic oxidation reaction between the high-temperature air and the liquid or solid fuel. In the reformer, the thermal decomposed gas is reformed in the existence of the high-temperature steam so as to be a high-temperature syngas. The steam reforming reaction of the liquid or solid fuel is carried out with an exothermic reaction between the high-temperature air and hydrocarbon contained in the thermal decomposed gas and with an endothermic reaction between the hydrocarbon and the high-temperature steam.
摘要:
A method for processing material comprising combinations of aluminum and plastic, such as aluminum bottle caps having a plastic coating, comprising the steps of: pyrolyzing the plastic in an inert atmosphere, cracking or gasifying the gases or vapours which are released in the course of pyrolysis, afterburning the coke which remains behind on the aluminum in the course or pyrolysis. The gases or vapours released are recirculated and are used, during pyrolysis, as an inert, oxygen-free medium.
摘要:
A first portion (50) of a sulfur and nitrogen-bearing carbonaceous fuel is gasified in a gasification reactor (20) in the presence of a reducing atmosphere of air to produce a hot, char-containing, carbon-monoxide-rich fuel gas (42) having a low Btu content. After cooling, the char-containing carbon-monoxide-rich fuel gas (42) is introduced into a steam generating furnace (10) and combusted therein with a second portion (40) of the carbonaceous fuel in the presence of at least sufficient additional air to substantially complete combustion whereby a hot flue gas is produced. A sulfur-capturing material (60) is introduced into both the gasification reactor (20) and the combustion zone of the steam generating furnace (10) to absorb a substantial portion of the sulfur-containing gases produced during the gasification and combustion processes. By combusting the second portion of the carbonaceous fuel together with the cooled, carbon-monoxide rich, low Btu content fuel gas, nitrogen oxide produced during combustion in the steam-generating furnace (10) is also reduced.
摘要:
A cyclic char gasifier process and apparatus are described wherein reactant gases are first compressed into the pores of a char fuel to react and then the reacted gases are expanded out of the char fuel pores. This cycle of compression and expansion is repeated with fresh reactant gases supplied for each compression and with reacted gases removed at each expansion. Air and steam are preferred reactant gases when the char fuel is to be gasified by oxidation. Reacted gases from such an oxidation gasifier plant are preferred reactant gases when the char fuel is to be partially gasified by devolatilization. Rapid reaction to a rich product gas can occur over the large surface area inside the char pores and the undesireable Neumann reversion reaction is suppressed by the strongly reducing conditions prevailing therein. The gases of devolatilization gasification can be used to enrichen the gases of oxidation gasification by using two cyclic char gasifier plants in a combination system. The char fuel can be placed into sealed pressure vessel containers or can be gasified in place within an underground coal formation. These cyclic char gasifier plants and systems can produce a net work output, one or more fuel gases, a devolatilized char, and a partially oxidized coke as principal products and the proportions of these products can be adjusted over a wide range to match market needs.