Process for recovering organic vapors from air
Abstract
A process for recovering and concentrating organic vapor from a feed stream of air having an organic vapor content of no more than 20,000 ppm by volume. A thin semipermeable membrane is provided which has a feed side and a permeate side, a selectivity for organic vapor over air of at least 50, as measured by the ratio of organic vapor permeability to nitrogen permeability, and a permeability of organic vapor of at least 3 x 10-7 cm3 (STP) cm/cm2 sec.cm Hg. The feed stream is passed across the feed side of the thin semipermeable membrane while providing a pressure on the permeate side which is lower than the feed side by creating a partial vacuum on the permeate side so that organic vapor passes preferentially through the membrane to form an organic vapor depleted air stream on the feed side and an organic vapor enriched stream on the permeate side. The organic vapor which has passed through the membrane is compressed and condensed to recover the vapor as a liquid.
- Inventors:
- Issue Date:
- Research Org.:
- Membrane Technology and Research, Inc., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 865672
- Patent Number(s):
- 4553983
- Application Number:
- 06/636,474
- Assignee:
- Membrane Technology and Research, Inc. (Menlo Park, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
- DOE Contract Number:
- AC07-83ID12379
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1984 Jul 31
- Country of Publication:
- United States
- Language:
- English
- Subject:
- process; recovering; organic; vapors; air; concentrating; vapor; feed; stream; content; 20; 000; ppm; volume; semipermeable; membrane; provided; permeate; selectivity; 50; measured; ratio; permeability; nitrogen; times; 10; -7; cm; stp; hg; passed; providing; pressure; creating; partial; vacuum; passes; preferentially; form; depleted; enriched; compressed; condensed; recover; liquid; partial vacuum; semipermeable membrane; permeable membrane; air stream; feed stream; organic vapor; recovering organic; organic vapors; vapor content; /95/96/585/
Citation Formats
Baker, Richard W. Process for recovering organic vapors from air. United States: N. p., 1985.
Web.
Baker, Richard W. Process for recovering organic vapors from air. United States.
Baker, Richard W. Tue .
"Process for recovering organic vapors from air". United States. https://www.osti.gov/servlets/purl/865672.
@article{osti_865672,
title = {Process for recovering organic vapors from air},
author = {Baker, Richard W.},
abstractNote = {A process for recovering and concentrating organic vapor from a feed stream of air having an organic vapor content of no more than 20,000 ppm by volume. A thin semipermeable membrane is provided which has a feed side and a permeate side, a selectivity for organic vapor over air of at least 50, as measured by the ratio of organic vapor permeability to nitrogen permeability, and a permeability of organic vapor of at least 3 x 10-7 cm3 (STP) cm/cm2 sec.cm Hg. The feed stream is passed across the feed side of the thin semipermeable membrane while providing a pressure on the permeate side which is lower than the feed side by creating a partial vacuum on the permeate side so that organic vapor passes preferentially through the membrane to form an organic vapor depleted air stream on the feed side and an organic vapor enriched stream on the permeate side. The organic vapor which has passed through the membrane is compressed and condensed to recover the vapor as a liquid.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}
Works referenced in this record:
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