Invention Grant
- Patent Title: Three stage membrane separation with partial reflux
- Patent Title (中): 三级膜分离与部分回流
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Application No.: US14584465Application Date: 2014-12-29
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Publication No.: US09433888B2Publication Date: 2016-09-06
- Inventor: Sudhir S. Kulkarni
- Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
- Applicant Address: FR Paris
- Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Claude
- Current Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Claude
- Current Assignee Address: FR Paris
- Agent Christoper J. Cronin
- Main IPC: B01D53/22
- IPC: B01D53/22 ; C01B23/00
Abstract:
A first gas present at low concentration in a source gas is recovered from the source gas (comprising a fast first gas and a slow second gas) at a relatively high recovery using a particular scheme of three gas separation membrane stages. The non-permeate from the first stage is a product gas comprising the slow gas. The second stage feeds non-permeate to the third stage. The third stage non-permeate is combined with the gas fed to the first stage. The permeate from the second stage is divided into two portions. The second portion is a product gas comprising the fast gas. The first portion is combined with the permeates from the first and third stages and the combination is compressed and fed to the second stage. The invention is particularly applicable for separation of Helium from natural gas.
Public/Granted literature
- US20160184769A1 THREE STAGE MEMBRANE SEPARATION WITH PARTIAL REFLUX Public/Granted day:2016-06-30
Information query
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