| 摘要 |
A process for reducing the sulfur content of a hydrocarbon stream, including: feeding a hydrocarbon stream including sulfur compounds to a catalytic distillation reactor having one or more hydrodesulfurization reaction zones; feeding hydrogen to the catalytic distillation reactor; concurrently in the catalytic distillation reactor: fractionating the hydrocarbon stream into a heavy fraction and a light fraction; contacting hydrogen and the light fraction to form H2S and a light fraction of reduced sulfur content; recovering the light fraction, H2S, and hydrogen as an overheads; recovering the heavy fraction; heating the overheads to a temperature from 500 to 700oF; feeding the heated overheads and hydrogen to a high temperature low pressure reactor to form H2S and a reactor effluent of reduced mercaptan content; separating the reactor effluent, H2S, and unreacted hydrogen to form a light hydrocarbon fraction and a fraction including H2S and hydrogen; recycling a portion of the light hydrocarbon fraction to the catalytic distillation reactor. |
