Active solids supply system and method for supplying solids

摘要

A solids supply systems having a solids deaeration zone and a solids pump zone, and to methods for supplying the solids e.g., pulverized dry coal, to an application, e.g., gasification process. The solids deaeration zone includes a roller system containing a plurality of porous roller assemblies, or a belt system containing a plurality of porous belt assemblies. The solids deaeration zone is operable to deaerate and convey the solids to the solids pump zone. In the solids deaeration zone, the solids become sufficiently compacted prior to and upon entry into the solids pump zone to be effectively conveyed through the solids pump zone.

主权项

1. A solids supply system comprising:
(i) a solids deaeration zone, and (ii) a solids pump zone; wherein said solids deaeration zone is in flow communication with said solids pump zone; said solids deaeration zone comprises: (a) a roller system comprising a plurality of porous roller assemblies, or (b) a belt system comprising a plurality of porous belt assemblies, operable to deaerate and convey the solids to said solids pump zone, wherein said solids become sufficiently compacted prior to and upon entry into said solids pump zone to be effectively conveyed through said solids pump zone; wherein the solids pump zone is comprised of a belt (tractor) pump, and the tangential velocity of the solids at the porous roller assemblies or porous belt assemblies in the solids deaeration zone is from 80% to 120% of the tangential velocity of the solids at the belt assemblies of the solids pump zone; wherein said solids deaeration zone is capable of being pressure regulated; and wherein said belt (tractor) pump is operable to convry said to an application.