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Title: Process for control of pollutants generated during coal gasification

Abstract

The present invention is directed to an improvement in the coal gasification process that effectively eliminates substantially all of the environmental pollutants contained in the producer gas. The raw producer gas is passed through a two-stage water scrubbing arrangement with the tars being condensed essentially water-free in the first stage and lower boiling condensables, including pollutant laden water, being removed in the second stage. The pollutant-laden water is introduced into an evaporator in which about 95 percent of the water is vaporized and introduced as steam into the gas producer. The condensed tars are combusted and the resulting products of combustion are admixed with the pollutant-containing water residue from the evaporator and introduced into the gas producer.

Inventors:
 [1];  [2]
  1. Pittsburgh, PA
  2. Sewickley, PA
Publication Date:
OSTI Identifier:
863456
Patent Number(s):
US 4175929
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
E(49-18)-2250
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; control; pollutants; generated; coal; gasification; directed; improvement; effectively; eliminates; substantially; environmental; contained; producer; gas; raw; passed; two-stage; water; scrubbing; arrangement; tars; condensed; essentially; water-free; stage; boiling; condensables; including; pollutant; laden; removed; pollutant-laden; introduced; evaporator; 95; percent; vaporized; steam; combusted; resulting; products; combustion; admixed; pollutant-containing; residue; gas producer; resulting product; coal gasification; gasification process; coal gas; containing water; resulting products; effectively eliminate; environmental pollutants; environmental pollutant; effectively eliminates; /48/95/

Citation Formats

Frumerman, Robert, and Hooper, Harold M. Process for control of pollutants generated during coal gasification. United States: N. p., 1979. Web.
Frumerman, Robert, & Hooper, Harold M. Process for control of pollutants generated during coal gasification. United States.
Frumerman, Robert, and Hooper, Harold M. Mon . "Process for control of pollutants generated during coal gasification". United States. https://www.osti.gov/servlets/purl/863456.
@article{osti_863456,
title = {Process for control of pollutants generated during coal gasification},
author = {Frumerman, Robert and Hooper, Harold M},
abstractNote = {The present invention is directed to an improvement in the coal gasification process that effectively eliminates substantially all of the environmental pollutants contained in the producer gas. The raw producer gas is passed through a two-stage water scrubbing arrangement with the tars being condensed essentially water-free in the first stage and lower boiling condensables, including pollutant laden water, being removed in the second stage. The pollutant-laden water is introduced into an evaporator in which about 95 percent of the water is vaporized and introduced as steam into the gas producer. The condensed tars are combusted and the resulting products of combustion are admixed with the pollutant-containing water residue from the evaporator and introduced into the gas producer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

Patent:

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