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US 12,491,464 B2Granted
Process for separating hydrogen from an olefin hydrocarbon effluent vapor stream
AssigneeEnflex, Inc.
InventorsJames Zhao, Shukui Zhao
Life of this patent
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Abstract
One or more specific embodiments disclosed herein includes a method for separating hydrogen from an olefin hydrocarbon rich compressed effluent vapor stream, employing a integrated heat exchanger, multiple gas-liquid separators, external refrigeration systems, and a rectifier attached to a liquid product drum.
Claims16
A deethanizer system for separating ethane and other components from a liquid mixture comprising propylene and propane hydrocarbon components as well as ethane and lighter components, comprising:
- a stripper column section comprising:
- a stripper column, wherein the stripper column comprises a top stage and a bottom stage, and further wherein the stripper column receives a liquid mixture;
- and
- a stripper column condenser, wherein the stripper column condenser is connected to the stripper column and a first heat exchanger, wherein the first heat exchanger transfers a fresh feed (propane) liquid stream to a first control valve, wherein the first control valve transfers a mixed vapor/liquid stream to the stripper column condenser;
- and
- a rectifier column section comprising:
- a rectifier column, wherein the rectifier column is connected to the stripper column condenser;
- a rectifier column reflux condenser, wherein the reflux condenser is connected to the rectifier column;
- a refrigeration compressor, wherein the refrigeration compressor is connected to the rectifier column reflux condenser;
- a rectifier column reflux drum, wherein the rectifier column reflux drum is connected to the rectifier column reflux condenser;
- a refrigerant condenser, wherein the refrigerant condenser is connected to the refrigeration compressor;
- a refrigerant/gas heat exchanger, wherein the refrigerant/gas heat exchanger is connected to the refrigerant condenser, and further wherein the refrigerant/gas heat exchanger receives a cooled vapor stream from the rectifier column reflux drum;
- a refrigerant receiver vessel, wherein the refrigerant receiver vessel is connected to the refrigerant/gas heat exchanger;
- and
- a thermal expansion valve, wherein the thermal expansion valve is connected to the refrigerant receiver vessel, and further wherein the thermal expansion valve provides a cooled refrigerant stream to the rectifier column reflux condenser;
- wherein, the deethanizer system is connected to a propylene/propane splitter system.
13 more elements
Dependencies are inferred from the claim text.