State-of-the-art hydrogen sulfide control for geothermal energy systems: 1979
Existing state-of-the-art technologies for removal of hydrogen sulfide are discussed along with a comparative assessment of their efficiencies, reliabilities and costs. Other related topics include the characteristics of vapor-dominated and liquid-dominated resources, energy conversion systems, and the sources of hydrogen sulfide emissions. It is indicated that upstream control technologies are preferred over downsteam technologies primarily because upstream removal of hydrogen sulfide inherently controls all downstream emissions including steam-stacking. Two upstream processes for vapor-dominated resources appear promising; the copper sulfate (EIC) process, and the steam converter (Coury) process combined with an off-gas abatement system such as a Stretford unit. For liquid-dominated systems that produce steam, the process where the non-condensible gases are scrubbed with spent geothermal fluid appears to be promising. An efficient downstream technology is the Stretford process for non-condensible gas removal. In this case, partitioning in the surface condenser will determine the overall abatement efficiency. Recommendations for future environmental control technology programs are included.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5380186
- Report Number(s):
- DOE/EV-0068
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GEOTHERMAL ENERGY CONVERSION
AIR POLLUTION CONTROL
HYDROGEN SULFIDES
REMOVAL
AIR QUALITY
BENFIELD PROCESS
BINARY-FLUID SYSTEMS
CLAUS PROCESS
COST
FERROX PROCESS
FLASHED STEAM SYSTEMS
HOT-WATER SYSTEMS
SCRUBBERS
STRETFORD PROCESS
SULFOX PROCESS
TECHNOLOGY ASSESSMENT
TOTAL FLOW SYSTEMS
CHALCOGENIDES
CONVERSION
ENERGY CONVERSION
ENVIRONMENTAL QUALITY
EQUIPMENT
GEOTHERMAL SYSTEMS
HYDROGEN COMPOUNDS
HYDROTHERMAL SYSTEMS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SULFIDES
SULFUR COMPOUNDS
Geothermal Legacy
150600* - Geothermal Energy- Environmental Aspects