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首页> 美国政府科技报告 >Development of a Continuous Dry Coal Screw Feeder. Quarterly Technical Progress Report,January 1, 1976--March 31, 1976.
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Development of a Continuous Dry Coal Screw Feeder. Quarterly Technical Progress Report,January 1, 1976--March 31, 1976.

机译：连续干煤螺旋喂料机的研制。季刊技术进步报告，1976年1月1日 - 1976年3月31日。

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A definite need exists for methods of continuous,dry coal delivery to high pressure gasification processes to reduce overall system capital and operating costs and improve plant reliability by reducing the number of presently required coal delivery subsystems. For the processes being considered for commercial-scale coal gasification,the coal feeders should be capable of delivering coal against a back pressure as high as 1500psig. Continuous dry coal feeders should be capable of handling coal particle sizes from 200mesh to 2exp 1 /sub 2 ''and delivering such coal in the condition and size required by the process against the reactor pressure. Based on an overall evaluation,three new dry coal piston feeder concepts have been conceived that would permit the delivery of dry coal to a gasifier high pressure environment,featuring the following desirable characteristics:no loss of gases from the system;no degradation or compaction of the delivered coal;and a minimum of coal preconditioning auxiliary equipment is required. It is recommended that a development program on the new piston feeder concepts be undertaken to establish feasibility. (ERA citation 02:000096)

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