ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,465, issued on Sept. 23, was assigned to HALDOR TOPSOE A/S (Kgs. Lyngby, Denmark).
"Gasification process employing acid gas recycle" was invented by Francois-Xavier Pascal Thierry Chiron (Aigremont, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for converting a feedstock comprising solid hydrocarbons to a sweet synthesis gas, involving the steps a. gasifying said feedstock in the presence of steam, an oxygen rich gas and an amount of sour process gas to form a raw synthesis gas optionally comprising tar, b. optionally conditioning said raw synthesis gas to a sour shift feed gas, c. contacting said sour shift feed gas with a sulfide...