Title:
METHOD FOR SEPARATING A NATURAL GAS STREAM INTO A METHANE-ENRICHED FRACTION AND A FRACTION ENRICHED IN C2 AND HIGHER HYDROCARBONS
Document Type and Number:
WIPO Patent Application WO/2019/020916
Kind Code:
A3
Abstract:
Method for purifying a feed gas stream comprising methane and hydrocarbons having at least two carbon atoms, comprising the following steps: step a): cooling the feed gas stream in a heat exchanger; step b): feeding the stream from step a) into a first phase separator pot to produce a liquid stream and a gas stream; step c): separating the gas stream from step b) in a membrane permeation unit, thereby producing at least one permeate gas stream and a partially condensed residual stream; step d): feeding the residual stream from step c) into a second phase separator pot to produce a liquid stream and a gas stream; step e): feeding at least a portion of the gas stream from step d) into a Joule Thomson expansion means; step f): heating at least a portion of the expanded stream from step e) by feeding it into the heat exchanger (2) implemented in step a), counter-current to the feed stream.
Inventors:
TERRIEN PAUL (US)
MARTY PASCAL (FR)
DING YONG (US)
MARTY PASCAL (FR)
DING YONG (US)
Application Number:
PCT/FR2018/051876
Publication Date:
March 21, 2019
Filing Date:
July 23, 2018
Export Citation:
Assignee:
AIR LIQUIDE (FR)
International Classes:
B01D53/00; B01D53/22; C10L3/10
Foreign References:
| US20140107388A1 | 2014-04-17 | |||
| CA2977195A1 | 2016-09-01 |
Attorney, Agent or Firm:
DE BEAUFORT, François-Xavier (FR)
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