Synthesis gas ("syngas") is generated from the conversion of hydrocarbon feedstocks into a raw gas consisting mainly of hydrogen (H2) and carbon monoxide (CO). Other components present in the syngas such as hydrogen sulfide (H2S) and carbon dioxide (CO2) can be removed using chemical and/or physical wash units. The synthesis gas can then be further conditioned to meet downstream end-use requirements using a number of Linde gas processing technologies.
Linde has significant experience with the production of syngas from gaseous hydrocarbon feedstocks such as natural gas. Heavier hydrocarbons including liquid oil streams, refinery by-products like vacuum residue and asphalt, and solid feedstocks like coal and petroleum coke are converted into syngas through partial oxidation or gasification. The syngas then is then processed into marketable products such as chemicals, fertilizers, electricity, and fuels. The process steps to produce these end products may include CO conversion (water-gas-shift), acid gas removal by RECTISOL® or amine based solvents, and H2/CO separation via cryogenic means or pressure-swing-adsorption.