Power plants – Combustion products used as motive fluid
Patent
1991-10-23
1993-06-22
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
60 3912, 60 39181, 55 73, 55268, 48206, F02B 4300, F02G 300
Patent
active
052207820
ABSTRACT:
A high pressure synthetic gas stream is produced by gasifying coal. Hydrogen sulfide is removed by contacting the high pressure gas stream with a physical solvent, such as an alcohol, in an absorber column. A low temperature is maintained in the absorber column, typically by chilling both the solvent and the incoming high pressure synthetic gas stream, where a portion of the cooling requirement is supplied by adiabatically expanding the cleaned high pressure gas stream exiting the absorber. Typically, the cleaned high pressure gas stream will be expanded in a turbine expander to provide mechanical energy in addition to cooling capacity. The cleaned synthetic gas is useful as a fuel or chemical feedstock.
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Brown Charles R.
Geosits Robert
Bechtel Group Inc.
Bertsch Richard A.
Richman Howard R.
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