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EFFICIENT COMBINED CYCLE SYSTEM EMPLOYING A HIGH TEMPERATURE COMBUSTION TURBINE AND A FLUIDIZED COAL BED WITH ECONOMIC EXCLUSION OF SULFUR FROM SYSTEM WASTE GASES
EFFICIENT COMBINED CYCLE SYSTEM EMPLOYING A HIGH TEMPERATURE COMBUSTION TURBINE AND A FLUIDIZED COAL BED WITH ECONOMIC EXCLUSION OF SULFUR FROM SYSTEM WASTE GASES
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机译：采用高效燃烧涡轮和流化床的高效联合循环系统，经济上排除了来自系统废气的硫
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21 49,769ABSTRACT OF THE DISCLOSUREA combined cycle system includes a boiler havinga fluidized bed which provides heat from burning coal forgenerating steam used to drive a steam turbine generator.After compressed air has been heated to 1400°F in a fluidbed air heater, it is further heated in combustors of acombustion turbine by combustion of a gas obtained fromlow temperature pyrolysis of the coal in another fluidizedcoal bed which is pressurized. The hot gaseous productsdrive the combustion turbine and a connected generator.Char from the pyrolysis and supplementary coalare burned in the boiler fluid bed with the exhaust of thegas turbine. Sulfur in both the coal or char and the gasturbine exhaust is captured by limestone in the bed. Thehigh heating value of the pyrolysis gas and the high airpreheat require a relatively small volume of gas.Corrosive and sticky constituents of coal arenot vaporized at the low pyrolysis temperature of 1000°F.The small quantity of gas and the absence of corrosiveconstituents permit satisfactory operation of the gasturbine with only dust removal from the gas withoutrequiring gas cooling.
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