Process and apparatus for extracting sulfur compounds in a hydrocarbon stream

摘要

One exemplary embodiment can be a process for extracting sulfur compounds in a hydrocarbon stream. The process can include feeding a hydrocarbon stream containing sulfur compounds to a prewash zone containing an alkali, withdrawing a prewashed hydrocarbon stream from the prewash zone, and feeding the prewashed hydrocarbon stream to a mass transfer zone for extracting one or more thiol compounds from the prewashed hydrocarbon stream. Often, the mass transfer zone includes a hollow fiber membrane contactor.

主权项

1. A process for extracting sulfur compounds in a hydrocarbon stream, comprising:
A) feeding a hydrocarbon stream containing one or more sulfur compounds to a prewash zone containing an ammonia; B) withdrawing a prewashed hydrocarbon stream from the prewash zone; and C) feeding the prewashed hydrocarbon stream to a mass transfer zone for extracting one or more thiol compounds from the prewashed hydrocarbon stream wherein the mass transfer zone comprises a hollow fiber membrane contactor comprising at least one tube, the tube having pores in the tube wall, wherein the extraction of one or more thiol compounds occurs through the pores in the tube wall.