초록 ▼

A process and apparatus for coal gasification plant feedstock preparation. A raw feedstock slurry is fed to a hydrocyclone which separates and provides a primary carbonaceous-rich overflow. The primary overflow is further separated by a dewatering screen into a secondary carbonaceous-rich overflow a

A process and apparatus for coal gasification plant feedstock preparation. A raw feedstock slurry is fed to a hydrocyclone which separates and provides a primary carbonaceous-rich overflow. The primary overflow is further separated by a dewatering screen into a secondary carbonaceous-rich overflow and a media bleed slurry. The secondary overflow is crushed by a crusher and a portion of the media bleed slurry is added to the crushed secondary overflow for subsequent milling and conditioning.

대표청구항 ▼

[ What is claimed is:] [1.] A process for preparing feedstock for a coal gasification plant, comprising the steps of:admitting a raw feedstock slurry containing carbonaceous and inert particles to a hydrocyclone and therein separating a substantial fraction of the carbonaceous particles in the hydro

[ What is claimed is:] [1.] A process for preparing feedstock for a coal gasification plant, comprising the steps of:admitting a raw feedstock slurry containing carbonaceous and inert particles to a hydrocyclone and therein separating a substantial fraction of the carbonaceous particles in the hydrocyclone to yield a primary carbonaceous-rich overflow;further separating said primary carbonaceous-rich overflow to produce a secondary carbonaceous-rich overflow and a media bleed slurry;crushing said secondary carbonaceous-rich overflow;adding at least a portion of said media bleed slurry to said crushed secondary carbonaceous-rich overflow;milling said crushed secondary carbonaceous-rich overflow and media bleed slurry portion; andconditioning said crushed and milled carbonaceous rich material to provide a finished feedstock slurry having a predetermined solids to liquid ratio suitable for feeding to a gasifier.