| 摘要 |
PCT No. PCT/SE93/00249 Sec. 371 Date Nov. 15, 1994 Sec. 102(e) Date Nov. 15, 1994 PCT Filed Mar. 24, 1993 PCT Pub. No. WO93/20169 PCT Pub. Date Oct. 14, 1993A method for producing fuels based on solid carbonaceous natural fuels which are particularly suited for non-polluting thermal power generation with gas and steam turbines in a combined cycle which is characterized in that the flow of finely-divided natural fuel is pyrolyzed at superatmospheric pressure, suitably 5 to 20 bar, and >700 DEG C. in a cascade of a number of reactors, preferably >3 reactors, and, in that the pyrolysis gas is reformed, preferably in the presence of burnt lime and/or dolomite for desulphuration, is brought into fluidizing contact with the char recirculated from the last reactor in said cascade, with a flow which is >5 times larger than the flow of fuel, the fluidizing contact between the pyrogas formed and the char being continued in the following reactors and the temperature in said reactors preferably being maintained at a level higher than in said first reactor, whereas the temperature in the last reactor in said cascade is suitably maintained at a lower level than in said first reactor, whereas produced "reformed gas" and netto char withdrawn from said last reactor after separation are preferably used as fuel in a combined cycle, whereas the recirculating char withdrawn from said last reactor is after a suitable temperature increase by partial combustion with oxygen containing gas recirculated to said first reactor in said cascade. A device for carrying out said method.
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