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Title: Method of removing hydrogen sulfide from gases utilizing a zinc oxide sorbent and regenerating the sorbent

Abstract

A spent solid sorbent resulting from the removal of hydrogen sulfide from a fuel gas flow is regenerated with a steam-air mixture. The mixture of steam and air may also include additional nitrogen or carbon dioxide. The gas mixture contacts the spent sorbent containing metal sulfide at a temperature above 500.degree. C. to regenerate the sulfide to metal oxide or carbonate. Various metal species including the period four transition metals and the lanthanides are suitable sorbents that may be regenerated by this method. In addition, the introduction of carbon dioxide gas permits carbonates such as those of strontium, barium and calcium to be regenerated. The steam permits regeneration of spent sorbent without formation of metal sulfate. Moreover, the regeneration will proceed with low oxygen concentrations and will occur without the increase in temperature to minimize the risk of sintering and densification of the sorbent.

Inventors:
 [1];  [2]
  1. (Concord, MA)
  2. (Maynard, MA)
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
864948
Patent Number(s):
4442078
Assignee:
United States of America as represented by United States (Washington, DC) ANL
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; removing; hydrogen; sulfide; gases; utilizing; zinc; oxide; sorbent; regenerating; spent; solid; resulting; removal; fuel; gas; flow; regenerated; steam-air; mixture; steam; air; additional; nitrogen; carbon; dioxide; contacts; containing; metal; temperature; 500; degree; regenerate; carbonate; various; species; including; period; transition; metals; lanthanides; suitable; sorbents; addition; introduction; permits; carbonates; strontium; barium; calcium; regeneration; formation; sulfate; moreover; proceed; oxygen; concentrations; occur; increase; minimize; risk; sintering; densification; oxygen concentrations; oxide sorbent; dioxide gas; metal sulfate; oxygen concentration; metal species; metal sulfide; zinc oxide; transition metals; gas flow; fuel gas; carbon dioxide; metal oxide; transition metal; hydrogen sulfide; gas mixture; removing hydrogen; air mixture; containing metal; various metal; suitable sorbent; oxide gas; spent solid; sorbent containing; /423/502/

Citation Formats

Jalan, Vinod M., and Frost, David G. Method of removing hydrogen sulfide from gases utilizing a zinc oxide sorbent and regenerating the sorbent. United States: N. p., 1984. Web.
Jalan, Vinod M., & Frost, David G. Method of removing hydrogen sulfide from gases utilizing a zinc oxide sorbent and regenerating the sorbent. United States.
Jalan, Vinod M., and Frost, David G. Sun . "Method of removing hydrogen sulfide from gases utilizing a zinc oxide sorbent and regenerating the sorbent". United States. https://www.osti.gov/servlets/purl/864948.
@article{osti_864948,
title = {Method of removing hydrogen sulfide from gases utilizing a zinc oxide sorbent and regenerating the sorbent},
author = {Jalan, Vinod M. and Frost, David G.},
abstractNote = {A spent solid sorbent resulting from the removal of hydrogen sulfide from a fuel gas flow is regenerated with a steam-air mixture. The mixture of steam and air may also include additional nitrogen or carbon dioxide. The gas mixture contacts the spent sorbent containing metal sulfide at a temperature above 500.degree. C. to regenerate the sulfide to metal oxide or carbonate. Various metal species including the period four transition metals and the lanthanides are suitable sorbents that may be regenerated by this method. In addition, the introduction of carbon dioxide gas permits carbonates such as those of strontium, barium and calcium to be regenerated. The steam permits regeneration of spent sorbent without formation of metal sulfate. Moreover, the regeneration will proceed with low oxygen concentrations and will occur without the increase in temperature to minimize the risk of sintering and densification of the sorbent.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

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