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Title: Direct Chlorination Process for geothermal power plant off-gas - hydrogen sulfide abatement

Abstract

The Direct Chlorination Process removes hydrogen sulfide from geothermal off-gases by reacting hydrogen sulfide with chlorine in the gas phase. Hydrogen chloride and elemental sulfur are formed by this reaction. The Direct Chlorination Process has been successfully demonstrated by an on-site operation of a pilot plant at the 3 M We HPG-A geothermal power plant in the Puna District on the island of Hawaii. Over 99.5% hydrogen sulfide removal was achieved in a single reaction stage. Chlorine gas did not escape the pilot plant, even when 90% excess chlorine gas was used. A preliminary economic evaluation of the Direct Chlorination Process indicates that it is very competitive with the Stretford Process Compared to the Stretford Process, the Direct Chlorination process requires about one-third the initial capital investment and about one-fourth the net daily expenditure. Because of the higher cost of chemicals and the restricted markets in Hawaii, the economic viability of this process in Hawaii is questionable.

Authors:
Publication Date:
Research Org.:
Sheinbaum (I.) Co., Inc., Monrovia, CA (USA)
OSTI Identifier:
5540172
Report Number(s):
DOE/SF/11664-T1
ON: DE84001102
DOE Contract Number:  
AC03-82SF11664
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; GEOTHERMAL POWER PLANTS; AIR POLLUTION ABATEMENT; HYDROGEN SULFIDES; CHLORINATION; REMOVAL; HAWAII; HYDROCHLORIC ACID; MARKET; PILOT PLANTS; SULFUR; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; FEDERAL REGION IX; FUNCTIONAL MODELS; HALOGENATION; HYDROGEN COMPOUNDS; INORGANIC ACIDS; NONMETALS; NORTH AMERICA; POLLUTION ABATEMENT; POWER PLANTS; SULFIDES; SULFUR COMPOUNDS; THERMAL POWER PLANTS; USA; Geothermal Legacy; 150600* - Geothermal Energy- Environmental Aspects

Citation Formats

Sims, A V. Direct Chlorination Process for geothermal power plant off-gas - hydrogen sulfide abatement. United States: N. p., 1983. Web. doi:10.2172/5540172.
Sims, A V. Direct Chlorination Process for geothermal power plant off-gas - hydrogen sulfide abatement. United States. https://doi.org/10.2172/5540172
Sims, A V. 1983. "Direct Chlorination Process for geothermal power plant off-gas - hydrogen sulfide abatement". United States. https://doi.org/10.2172/5540172. https://www.osti.gov/servlets/purl/5540172.
@article{osti_5540172,
title = {Direct Chlorination Process for geothermal power plant off-gas - hydrogen sulfide abatement},
author = {Sims, A V},
abstractNote = {The Direct Chlorination Process removes hydrogen sulfide from geothermal off-gases by reacting hydrogen sulfide with chlorine in the gas phase. Hydrogen chloride and elemental sulfur are formed by this reaction. The Direct Chlorination Process has been successfully demonstrated by an on-site operation of a pilot plant at the 3 M We HPG-A geothermal power plant in the Puna District on the island of Hawaii. Over 99.5% hydrogen sulfide removal was achieved in a single reaction stage. Chlorine gas did not escape the pilot plant, even when 90% excess chlorine gas was used. A preliminary economic evaluation of the Direct Chlorination Process indicates that it is very competitive with the Stretford Process Compared to the Stretford Process, the Direct Chlorination process requires about one-third the initial capital investment and about one-fourth the net daily expenditure. Because of the higher cost of chemicals and the restricted markets in Hawaii, the economic viability of this process in Hawaii is questionable.},
doi = {10.2172/5540172},
url = {https://www.osti.gov/biblio/5540172}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 1983},
month = {Wed Jun 01 00:00:00 EDT 1983}
}