January 2011

Special Report: Gas Processing Developments

When is CO2 more hazardous than H2S

Data shows potential harmful effects to workers due to acid gas exposure

Beitler, C. M., Fisher, K., McIntush, K., Lundeen, J., Trimeric Corp.; Tyndall, K., Pastor, Behling & Wheeler LLC

Many different types of facilities produce or use streams containing a high carbon dioxide (CO2) content (98+%) with low hydrogen sulfide (H2S) concentrations, e.g., a few parts per million by volume (ppmv) to a few volume percent (vol%). Examples include CO2-flood enhanced oil recovery, pre-combustion carbon capture (from fossil fuel-fired power plants and industrial facilities) and sequestration, natural gas conditioning, and agricultural manufacturing, among others. In all of these industries, the potential for a release in a processing step or during transmission through a pipeline exists. The health effects and dangers of H2S are well known, but those of CO2 are not as commonly underst

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