Partial oxidation of bituminous coal

Details Partial oxidation of bituminous coal Partial oxidation of bituminous coal

1989-08-24

1990-08-07

Kratz, Peter

Gas: heating and illuminating

Processes

Fuel mixtures

48206, 48215, 252373, C10J 346

Patent

active

049464760

ABSTRACT:
Synthesis gas, reducing gas, or fuel gas is produced by the partial oxidation of bituminous coal at an autogenous temperature in the range of about 2000.degree. F. to 2700.degree. F. and at a pressure in the range of about 17 to 100 atmospheres to produce a raw effluent gas stream containing entrained molten slag and carbon-rich particulate material. After cooling, course slag and carbon-rich particulate material are separated. A fuel mixture comprising about 20 to 100 wt. % of said carbon-rich particulate material and the remainder comprising a supplemental fuel is reacted by partial oxidation at an autogenous temperature of about 2000.degree. F. to 2700.degree. F. and at a reduced pressure e.g. in the range of about 1 to 16 atmospheres and at least 16 atmospheres below the pressure in the partial oxidation reaction used to produce said carbon-rich particulate material. By reducing the pressure less carbon-rich particulate material is produced in the second partial oxidation reaction at a significant cost savings and improved process efficiency.

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