Patent ID: 11952541
Assignee: UOP LLC
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 5:
6. The process of claim 4 further comprising:
fractionating the stripper overhead liquid stream and/or the LPG hydrocarbons rich sponge oil stream in a fractionator to provide a fractionator overhead gaseous stream and a fractionator bottoms naphtha stream;
condensing the fractionator overhead gaseous stream to provide a fractionator off-gas stream and a liquid stream comprising LPG hydrocarbons;
purifying a first portion of the liquid stream comprising LPG hydrocarbons in a caustic scrubber to provide a sulfur-lean LPG stream and a spent caustic stream; and
recycling a second portion of the liquid stream comprising LPG hydrocarbons to the fractionator.