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

Technical Report · Wed Jun 01 00:00:00 EDT 1983

DOI:https://doi.org/10.2172/5540172· OSTI ID:5540172

Sims, A V

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.

• Research Organization: Sheinbaum (I.) Co., Inc., Monrovia, CA (USA)
• DOE Contract Number: AC03-82SF11664
• OSTI ID: 5540172
• Report Number(s): DOE/SF/11664-T1; ON: DE84001102
• Resource Relation: Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

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