Trace Contaminant Removal from Hot Coal Gas for Molten Carbonate Fuel Cell Application. Final Report

摘要

Coal gas fueled molten carbonate fuel cell power plants offer an attractive option for efficient generation of electricity. High temperature removal of coal gas contaminants, such as sulfur, arsenic, halides, tar, etc., is desirable in order to achieve high system efficiency. This experimental study establishes the feasibility of using nickel sorbents for hot trace contaminant removal from coal gas to a sub-ppM level. Chemisorption and desorption characteristics of hydrogen sulfide and arsine on different nickel catalyst were measured between 500 and 700 deg C. A gas chromatographic method capable of monitoring the contaminant levels down to 20 ppBv in the coal gas was developed and verified. (ERA citation 11:038137)