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
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.
대표청구항▼
A machine for gasifying char fuels comprising at least one cyclic char gasifier plant comprising: at least one compressor means for compressing gases from a lower pressure to a higher pressure and each such compressor comprising at least one stage and each such stage comprising a supply end and a de
A machine for gasifying char fuels comprising at least one cyclic char gasifier plant comprising: at least one compressor means for compressing gases from a lower pressure to a higher pressure and each such compressor comprising at least one stage and each such stage comprising a supply end and a delivery end; means for driving each of said compressors; at least one expander means for expanding gas from a higher pressure to a lower pressure and each such expander comprising at least one stage and each such stage comprising an inlet end and a discharge end; at least two separate containers for containing char fuel; at least one product gas collector pipe; at least one reactant gas supply source; each such compressor whose number of stages exceeds one further comprising fixed open gas flow connections from the delivery end of each compressor stage, except one, to the supply end of one other stage of said compressor, whereby said stages of said compressor are connected in series so that the pressure of a particular gas mass, at delivery from each stage, increases as said gas mass is compressed through said series connected stages, from the supply end to the delivery end of each stage, with the first stage in said series through which a gas mass first flows being both the lowest pressure stage and also that one stage whose supply end does not have a fixed open gas flow connection from the delivery end of any other stage or said compressor, and with the last stage in said series through which a gas mass last flows being both the highest pressure stage and also that one stage whose delivery end does not have a fixed open gas flow connection to the supply end of any other stage of said compressor; fixed open gas flow connections from the supply end of the lowest pressure stage of each of said compressors to at least one reactant gas supply source; each such expander whose number of stages exceeds one further comprising fixed open gas flow connections from the discharge end of each expander stage, except one, to the inlet end of one other stage of said expander, whereby said stages of said expander are connected in series so that the pressure of a particular gas mass at discharge from each stage, decreases as said gas mass is expanded through said series connected stages, from the inlet end to the discharge end of each stage, with the first stage in said series through which a gas mass first flows being both the highest pressure stage and also that one stage whose inlet end does not have a fixed open gas flow connection from the discharge end of any other stage of said expander, and with the last stage in said series through which a gas mass last flows being both the lowest pressure stage and also that one stage whose discharge end does not have a fixed open gas flow connection to the inlet end of any other stage of said expander; fixed open gas flow connections from the discharge end of the lowest pressure stage of each of said expanders to a separate product gas collector pipe; changeable flow connections, which are openable and closeable, from each of said containers to each delivery end of each stage of each of said compressors and to each inlet end of each stage of each of said expanders; each cyclic char gasifier plant comprising a number of said containers, with changeable gas flow connections to said compressors and to said expanders, at least equal to the sum of the number of compressor stages of all compressors and the number of expander stages of all expanders; means for opening and closing said changeable gas flow connections so that, each container is opened for a time period to each delivery end of each stage of each of said compressors, in a sub-sequence of time periods of open gas flow connections to compressors, said sub-sequence proceeding in time order of increasing compressor stage delivery pressure, and is opened for a time period to each inlet end of each stage of said expanders, in a sub-sequence of time periods of open gas flow connections to expanders, said sub-sequence proceeding in time order of decreasing expander stage inlet pressure, said sub-sequence of connections to said compressor being followed by said sub-sequence of connections to said expanders, and these together comprise one sequence of time periods of open gas flow connections, each of said containers is opened to only one stage during any one time period of said sequence of time periods, said sequence of time periods of open gas flow connections to said compressors and to said expanders is repeated for each of said containers by said means for opening and closing; means for controlling said means for opening and closing so that said repeated sequences of time periods of open gas flow connections are a continuous series of time periods for any one containing means, and so that the delivery end of each stage of each compressor has an open gas flow connection to at least one containing means, and the inlet end of each stage of each expander has an open gas flow connection to at least one containing means, during all time periods, whenever said plant is operating.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (2)
Baron Gerhard (Hofheim DT) Bierbach Herbert (Frankfurt am Main DT) Hafke Carl (Frankfurt am Main DT) Zolzer Karlheinz (Frankfurt am Main DT), Feeder for coal-gasification reactor.
Kelller-Sornig, Peter; Mazza, Edoardo; Seketa, Bozidar, Compressed air energy storage system having a standby warm keeping system including an electric air heater.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.