Dry solids pump system for feeding a high pressure combustor
AssigneeCombustion Engineering, Inc.
InventorPaul D. Krawczyk
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Abstract
A method for feeding a dry pulverized solid material such as coal or limestone into a high pressure combustor is disclosed which employs a high pressure combustor is disclosed which employs a high pressure dry solids pump. The material is first pulverized and transported with air to a separator. The separated solids are temporarily accumulated and fed to one or more dry solids pump which continuously discharge the compact solids at high pressure into a gas mixing chamber. The compact solids are mixed with transport air as a dense phase for transport to the high pressure combustor.
Claims9
A method of feeding a dry solid material into a high pressure combustor comprising the steps of:
- a. pulverizing said dry solid material to a desired particle size in a pulverizer;
- b. conveying the pulverized dry solid material from said pulverizer in an air stream;
- c. separating said pulverized dry solid material from said air stream;
- d. feeding said separated pulverized dry solid material to a dry solids pump at atmospheric pressure;
- e. pumping dry compact pulverized solid material from said dry solids pump at said high pressure into a gas mixing chamber;
- f. mixing said quantity of high pressure dry solid material as a dense phase with a stream of high pressure air in said gas mixing chamber;
- and
- g. conveying said dense phase high pressure dry solid material in said high pressure air stream into a high pressure combustor.
Dependencies are inferred from the claim text.