|6371757||Kiln fuel system|
A kiln fuel system and method for producing cement. The system includes a tank for storing a fuel and a suction heater for drawing and preheating the fuel from the tank. A pressure station pressurizes the preheated fuel and a heater heats the preheated an...
|5034021||Apparatus for thermal pyrolysis of crushed coal|
Apparatus is described for the pyrolysis of coal comprising a pyrolysis tower through which crushed coal and hot gas are counter-currently passed. The tower enables a controlled temperature profile to be maintained in the tower, and contains inner appurte...
|4058205||Apparatus for treating oil shale|
A process and apparatus for decomposing kerogen and recovering oil, high BTU gas and energy for the process wherein a crushed oil shale is fed to a rotary preheater (300° to 350° F.) hence into a rotary retort (850°-1050° F.) where the kerogen is deco...