Process for LPG recovery
First Claim
Patent Images
1. A process for recovering LPG from a fractionation section of a refinery process comprising the steps of:
- (a) passing a feed stream comprising a stripper overhead product through a sponge absorber, and separating an off-gas stream from a top section of the sponge absorber and a light oil stream from a bottom section of the sponge absorber; and
(b) fractionating the light oil stream into;
(i) an overhead vapour in the form of a C3 stripped stream comprising less than 20% butane or propane, without condensing and without recycling of condensed overhead vapour in the fractionating step;
(ii) a LPG product stream; and
(iii) a stabilized naphtha stream.
2 Assignments
0 Petitions
Accused Products
Abstract
Process and plant for recovering LPG in a refinery process combining the use of sponge absorber, deethanizer and debutanizer. The process and plant enable high LPG recovery and removal of hydrogen sulphide in the LPG product to low levels.
8 Citations
11 Claims
-
1. A process for recovering LPG from a fractionation section of a refinery process comprising the steps of:
-
(a) passing a feed stream comprising a stripper overhead product through a sponge absorber, and separating an off-gas stream from a top section of the sponge absorber and a light oil stream from a bottom section of the sponge absorber; and (b) fractionating the light oil stream into; (i) an overhead vapour in the form of a C3 stripped stream comprising less than 20% butane or propane, without condensing and without recycling of condensed overhead vapour in the fractionating step; (ii) a LPG product stream; and (iii) a stabilized naphtha stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
Specification