Continuous process for energy conserving cooperative coal feeding and ash removal of continuous pressurized coal gasifiers and the like and apparatus for carrying out the same

Abstract From the Canadian patent

A method of continuously feeding coal or the like to coal gasifier means or the like operating under a predetermined elevated pressure and of continuously removing ash or the like therefrom in which the coal feeding and ash removing procedures are interrelated to provide energy conservation by removing heat from the ash and transferring the heat to the coal, such energy conservation being performed by means of the liquid medium (water) used to feed the coal and remove the ash. In the coal feeding procedure coal, is continuously introduced into a first low energy water circuit from which successive volumes of coal particles and entrained water are transferred to a second high energy water …