Patent ID: 8440160
Filing Date: 2013-05-14
Classification: C01B,F01K,Y02E,Y02P

Abstract:
1. A process for the production of sulfur from Syngas, in the power plant, or Low BTU Gas fields, the process comprising: With combination of three process units, sulfur recovery, SO2 recovery, and gas turbines or boilers; Heating the syngas or low BTU gas, then mixing with the SO2 recycle stream and adding oxygen, enriched air or air for processing in the Claus reactor; contacting an oxygen containing gas stream from air, oxygen-enriched air or pure oxygen with a syngas from the power plant or gas field low BTU-containing gas stream and a wet SO2 recycle-containing gas stream from the SO2 recovery unit in a first Claus reactor at an elevated temperature to produce an effluent stream comprising sulfur (S), SO2, H2S and water; recycling the wet SO2 stream from the SO2 recovery unit to the sulfur recovery unit; recovering the SO2 in the SO2 recovery unit by using one of commercial regenerable solvent; Moderate the outlet reactor temperature under 650 F with an ejector that uses the high-pressure sour feed gas as the motive fluid or by recycle blower; the pressure of the feed streams including air, oxygen or enriched air to the sulfur recovery up to 2000 psi; meaning operating the sulfur plant up to 2000 psi; Using gas turbines or boilers to generate the power, and, recovering the elemental sulfur from the product gas stream.