SYSTEM AND PROCESS FOR GAS SWEETENING

摘要

A METHOD FOR REMOVING HYDROGEN SULFIDE FROM A SOUR GAS STREAM COMPRISING HYDROGEN SULFIDE BY OXIDIZING HYDROGEN SULFIDE IN A CONVERTER BY CONTACTING THE SOUR GAS STREAM WITH AN AQUEOUS CATALYTIC SOLUTION, THEREBY PRODUCING A DESULFURIZED GAS STREAM AND A LIQUID STREAM COMPRISING REDUCED CATALYST AND ELEMENTAL SULFUR, INTRODUCING AN OXIDANT AND THE LIQUID STREAM COMPRISING REDUCED CATALYST AND ELEMENTAL SULFUR INTO A HIGH SHEAR DEVICE AND PRODUCING A DISPERSION WHEREIN THE MEAN BUBBLE DIAMETER OF THE OXIDANT GAS IN THE DISPERSION IS LESS THAN ABOUT 5 µM, INTRODUCING THE DISPERSION INTO A VESSEL FROM WHICH A SULFUR-CONTAINING SLURRY IS REMOVED AND A REGENERATED CATALYST STREAM IS REMOVED, WHEREIN THE SULFUR SLURRY COMPRISES ELEMENTAL SULFUR AND AQUEOUS LIQUID, AND RECYCLING AT LEAST A PORTION OF THE REGENERATED CATALYST STREAM TO THE CONVERTER. A SYSTEM OF APPARATUS FOR CARRYING OUT THE METHOD IS ALSO PROVIDED.