WO2004067133B1 - Cyclic membrane separation process - Google Patents

Cyclic membrane separation process

Info

Publication number
WO2004067133B1
WO2004067133B1 PCT/US2004/001119 US2004001119W WO2004067133B1 WO 2004067133 B1 WO2004067133 B1 WO 2004067133B1 US 2004001119 W US2004001119 W US 2004001119W WO 2004067133 B1 WO2004067133 B1 WO 2004067133B1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
ullage
membrane
volatile organic
feed
Prior art date
Application number
PCT/US2004/001119
Other languages
French (fr)
Other versions
WO2004067133A2 (en
WO2004067133A3 (en
Inventor
John Bowser
Stuart Nemser
Original Assignee
Cms Technology Holdings Inc
John Bowser
Stuart Nemser
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/350,867 external-priority patent/US6719824B1/en
Application filed by Cms Technology Holdings Inc, John Bowser, Stuart Nemser filed Critical Cms Technology Holdings Inc
Priority to DE112004000175T priority Critical patent/DE112004000175T5/en
Priority to CA002513667A priority patent/CA2513667C/en
Priority to GB0514299A priority patent/GB2412887B/en
Priority to MXPA05007775A priority patent/MXPA05007775A/en
Priority to JP2006502853A priority patent/JP4987467B2/en
Publication of WO2004067133A2 publication Critical patent/WO2004067133A2/en
Publication of WO2004067133A3 publication Critical patent/WO2004067133A3/en
Publication of WO2004067133B1 publication Critical patent/WO2004067133B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A cyclic process for controlling environmental emissions of volatile organic compounds (VOC) from vapor recovery in storage and dispensing operations of liquids maintains a vacuum in the storage tank ullage. In the first part of a two-part cyclic process ullage vapor is discharged through a vapor recovery system in which VOC are stripped from vented gas with a selectively gas permeable membrane. In the second part, the membrane is inoperative while gas pressure rises in the ullage. In one aspect of this invention, ambient air is charged to the membrane separation unit during the second part of the cycle. In another aspect, a vacuum is drawn in the membrane separation unit. The charging of air or drawing of vacuum purges VOC from the membrane unit and thus reduces overall VOC emissions.

Claims

AMENDED CLAIMS [Received by the International Bureau on 31 August 2004 (31.08.04)]
4. The process of claim 1 in which the feed gas mixture comprises volatile organic compounds and the diluent gas comprises air.
5. A process for reducing atmospheric emissions of volatile organic compound vapor from ullage gas of a liquid volatile organic compound storage tank, the process comprising
(a) providing a vapor recovery system comprising a membrane module comprising a two-sided gas permeable membrane comprising a polymer having a glass transition temperature and a selectivity for permeation of air relative to permeation of volatile organic compounds, in which one side of the membrane defines a feed-retentate chamber on a first side of the membrane in fluid communication with the ullage gas and the second side of the membrane defines a permeate chamber,
(b) for a first length of time simultaneously and continuously (i) conveying ullage gas into the feed-retentate chamber of the module so as to contact the first side of the membrane with the ullage gas, (ii) separating the ullage gas to form a low organic content gas depleted in volatile organic compounds relative to the ullage gas and a high organic content gas enriched in volatile organic compounds relative to the ullage gas, (iii) exhausting the low organic content gas from the module to ambient atmosphere, and (iv) returning the high organic content gas from the module into the ullage gas in the storage tank, (c) for a second length of time, stopping the conveying of the ullage gas, the separating of the ullage gas, the exhausting of the low organic content gas and the returning of the high organic content gas,
(d) during step (c) charging air to the vapor recovery system in a quantity effective to remove volatile organic compounds from the membrane module, and (e) repeating steps (b)-(d).
6. The process of claim 5 which further comprises separating the ullage gas at a temperature below the glass transition temperature such that the volatile organic
23
9. A process for reducing atmospheric emissions of volatile organic compound vapor from ullage space of a liquid volatile organic compound storage tank, the process comprising
(a) providing a vapor recovery system comprising a membrane module comprising a two-sided gas permeable membrane comprising a polymer having a glass transition temperature and a selectivity for permeation of air relative to permeation of volatile organic compounds, in which one side of the membrane defines a feed-retentate chamber on a first side of the membrane in fluid communication with the ullage gas and the second side of the membrane defines a permeate chamber, (b) for a first length of time simultaneously and continuously (i) conveying a feed gas from the ullage space into the feed-retentate chamber of the module so as to contact the first side of the membrane with the feed gas, (ii) separating the feed gas to form a low organic content gas depleted in volatile organic compounds relative to the feed gas and a high organic content gas enriched in volatile organic compounds relative to the feed gas, (iii) exhausting the low organic content gas from the module to ambient atmosphere, and (iv) returning the high organic content gas from the module into the ullage space in the storage tank,
(c) for a second length of time, stopping the conveying of the feed gas, the exhausting of the low organic content gas and the returning of the high organic content gas,
(d) during step (c) drawing a vacuum in the membrane module to an extent effective to remove a portion of a residual gas resident in the module at the time that the conveying of the feed gas is stopped, and
(e) repeating steps (b)-(d).
10. The process of claim 9 which further comprises returning the residual gas to the ullage space.
PCT/US2004/001119 2003-01-24 2004-01-16 Cyclic membrane separation process WO2004067133A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE112004000175T DE112004000175T5 (en) 2003-01-24 2004-01-16 Cyclic membrane separation process
CA002513667A CA2513667C (en) 2003-01-24 2004-01-16 Cyclic membrane separation process
GB0514299A GB2412887B (en) 2003-01-24 2004-01-16 Cyclic membrane separation process
MXPA05007775A MXPA05007775A (en) 2003-01-24 2004-01-16 Cyclic membrane separation process.
JP2006502853A JP4987467B2 (en) 2003-01-24 2004-01-16 Circulating membrane separation process

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US44229103P 2003-01-24 2003-01-24
US10/350,867 US6719824B1 (en) 2003-01-24 2003-01-24 Cyclic membrane separation process
US10/350,867 2003-01-24
US60/442,291 2003-01-24

Publications (3)

Publication Number Publication Date
WO2004067133A2 WO2004067133A2 (en) 2004-08-12
WO2004067133A3 WO2004067133A3 (en) 2004-09-30
WO2004067133B1 true WO2004067133B1 (en) 2004-10-28

Family

ID=32829422

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/001119 WO2004067133A2 (en) 2003-01-24 2004-01-16 Cyclic membrane separation process

Country Status (6)

Country Link
JP (1) JP4987467B2 (en)
CA (1) CA2513667C (en)
DE (1) DE112004000175T5 (en)
GB (1) GB2412887B (en)
MX (1) MXPA05007775A (en)
WO (1) WO2004067133A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9403121B2 (en) 2013-06-06 2016-08-02 Idex Health & Science, Llc Carbon nanotube composite membrane
US9381449B2 (en) 2013-06-06 2016-07-05 Idex Health & Science Llc Carbon nanotube composite membrane
KR102592236B1 (en) * 2016-04-28 2023-10-20 한화파워시스템 주식회사 Apparatus for treating oil mist
DE102019114751A1 (en) * 2019-06-03 2020-12-03 Vaillant Gmbh Membrane gas separator
CN111811156B (en) * 2020-07-29 2021-08-06 天津乐科节能科技有限公司 System and method for preparing low-temperature water through micropore flash evaporation

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5051114B2 (en) * 1989-06-15 1996-01-16 Du Pont Canada Perfluorodioxole membranes
US5084073A (en) * 1990-10-11 1992-01-28 Union Carbide Industrial Gases Technology Corporation Membrane drying process and system
US5281255A (en) * 1992-11-04 1994-01-25 Membrane Technology And Research, Inc Gas-separation process
FR2730790B1 (en) * 1995-02-17 1997-05-23 Air Liquide METHOD FOR INTRODUCING A FILLING GAS INTO AN ENCLOSURE AND INSTALLATION FOR IMPLEMENTING IT
US5571310A (en) * 1995-05-12 1996-11-05 Gilbarco Inc. Volatile organic chemical tank ullage pressure reduction
US5611841A (en) * 1995-09-29 1997-03-18 Membrane Technology And Research, Inc. Vapor recovery process using baffled membrane module
AU724534B2 (en) * 1996-08-14 2000-09-21 Bend Research, Inc. Vapor permeation system
US20020062733A1 (en) * 1997-03-07 2002-05-30 Grantham Rodger P. Fuel storage system and vent filter assembly
US5985002A (en) * 1997-03-07 1999-11-16 Vapor Systems Technologies, Inc. Fuel storage system with vent filter assembly
EP0908219B1 (en) * 1997-10-09 1999-12-08 Gkss-Forschungszentrum Geesthacht Gmbh Multi-stage process for the separation/recovery of gases
US6174351B1 (en) * 1999-03-26 2001-01-16 Delaware Capital Formation, Inc. Pressure management and vapor recovery system for filling stations
US6478852B1 (en) * 2000-02-18 2002-11-12 Cms Technology Holdings, Inc. Method of producing nitrogen enriched air

Also Published As

Publication number Publication date
CA2513667A1 (en) 2004-08-12
CA2513667C (en) 2009-11-17
GB2412887B (en) 2006-10-04
GB0514299D0 (en) 2005-08-17
WO2004067133A2 (en) 2004-08-12
MXPA05007775A (en) 2006-01-31
GB2412887A (en) 2005-10-12
WO2004067133A3 (en) 2004-09-30
JP4987467B2 (en) 2012-07-25
DE112004000175T5 (en) 2006-01-26
JP2006517146A (en) 2006-07-20

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