The HCE flow diagram shows sulfur in the off-gas stream. How is the IPFC expected to handle sulfur, especially when there is variability in the feedstocks?
The IPFC process is expected to enable use of domestically produced high sulfur coals. The Hydrogen Plasma Black Reactor produces a concentrated stream of hydrogen and carbon monoxide with a coal fuel. Sulfur emissions within this off-gas stream are expected to be in the form of hydrogen sulfide. Two well-known processes are available for recovering sulfur as hydrogen sulfide: It can be scrubbed out with a solvent or it can be precipitated out with zinc or zinc oxide. The Montreal hydrogen plasma plant removed it with a solvent. 11. Question: Heavy Metals.
