When is CO2 more hazardous than H2S

摘要

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.