CA2413799A1 - Water separation from solvent - Google Patents

Water separation from solvent Download PDF

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Publication number
CA2413799A1
CA2413799A1 CA002413799A CA2413799A CA2413799A1 CA 2413799 A1 CA2413799 A1 CA 2413799A1 CA 002413799 A CA002413799 A CA 002413799A CA 2413799 A CA2413799 A CA 2413799A CA 2413799 A1 CA2413799 A1 CA 2413799A1
Authority
CA
Canada
Prior art keywords
membrane
layer
reservoir
solvent
solution
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002413799A
Other languages
French (fr)
Other versions
CA2413799C (en
Inventor
Robert S. Johnson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of CA2413799A1 publication Critical patent/CA2413799A1/en
Application granted granted Critical
Publication of CA2413799C publication Critical patent/CA2413799C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/1213—Laminated layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08—Thickening liquid suspensions by filtration
    • B01D17/085—Thickening liquid suspensions by filtration with membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/18—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/22—Controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/36—Polytetrafluoroethene
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/34—Purifying; Cleaning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4005—Concentrating samples by transferring a selected component through a membrane
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4005—Concentrating samples by transferring a selected component through a membrane
    • G01N2001/4016—Concentrating samples by transferring a selected component through a membrane being a selective membrane, e.g. dialysis or osmosis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4055—Concentrating samples by solubility techniques
    • G01N2001/4061—Solvent extraction

Abstract

An apparatus (100) and method for separating residual water from a solvent. The device comprises a reservoir (102) containing a solution comprising solvent containing residual water, the reservoir having an opening to allow the solution to drain from the reservoir. A membrane layer is provided comprising a first layer (104) of fluoropolymer and a second layer of fluoropolymer (105). The membrane is positioned in series with the reservoir opening. Vacuum is generated on one side of the membrane layer wherein the solvent containing water passes through the membrane therein removing water from the solvent to provide a solvent with a water level of less than or equ al to 1.0 ppm.

Claims (25)

1. A method for separating residual water from a solvent, comprising the steps of:
providing a reservoir containing a solution comprising solvent containing residual water, the reservoir having an opening to allow the solution to drain from the reservoir, resisting the flow of the solution from the reservoir with a membrane layer comprising a first layer of fluoropolymer and a second layer of fluoropolymer, said membrane positioned in the series with the reservoir opening, decreasing the pressure on the second side of said supported membrane relative to the first side of said supported membrane to thereby increase the flow rate of the solvent through the membrane;
therein removing said water from said solvent to provide a solvent with a water level of less than or equal to 1.0 ppm.
2. The method of claim 1 wherein said first layer of fluoropolymer comprises PTFE.
3. The method of claim 1 wherein said second layer of fluoropolymer comprises ECTFE.
4. The method of claim 2 wherein said first layer comprising PTFE has a thickness of about 1-5 mils.
5. The method of claim 3 wherein said second layer of ECTFE has a thickness of about 5-15 mils.
6. The method of claim 1 wherein said membrane is characterized with a Gurley Number of ~ 30.0 seconds and a pore size of 0.05 - 2.0 microns.
7. The method of claim 1 wherein said membrane has a pore size is about 0.05 -2.0 micron.
8. The method of claim 1 wherein the step of decreasing the pressure on the second side of the membrane relative to the first side of the membrane is done by applying a vacuum
9. The method of claim 8 wherein the vacuum is varied.
10. The method of claim 8 wherein the vacuum ranges from about 1-15" Hg.
11. The method of claim 8 wherein the vacuum ranges from about 1-5" Hg.
12. The method of claim 1 wherein the decreasing of the pressure is delayed a selected period of time.
13. A method for separating residual water from a solvent, comprising the steps of:
providing a reservoir containing a solution comprising solvent containing residual water, the reservoir having an opening to allow the solution to drain from the reservoir, resisting the flow of the solution from the reservoir with a membrane layer comprising a first layer of polytetrafluroethylene (PTFE) and a second layer of ethylene-chlorotrifluroethylene (ECTFE) layer, said membrane positioned in the series with the reservoir opening, the membrane having said first layer in contact with the solution, and decreasing the pressure on the second side of said supported membrane relative to the first side of said supported membrane to thereby increase the flow rate of the solvent through the membrane.
14. The method of claim 13 wherein said membrane itself is further characterized with a Gurley Number of ~ 25.0 seconds and a pore size of 0.05 - 2.0 microns.
15. The method of claim 14 wherein said pore size is about 0.1 micron.
16. The method of claim 13 wherein said PTFE layer has a thickness of about 1-mils and said ECTFE layer has a thickness of about 5-15 mils.
17. The method of claim 13 wherein the step of decreasing the pressure on the second side of the membrane relative to the first side of the membrane is done by applying a vacuum
18. The method of claim 17 wherein the vacuum is varied.
19. The method of claim 17 wherein the vacuum ranges from about 1-15" Hg.
20. The method of claim 19 wherein the vacuum ranges from about 1-5" Hg.
21. The method of claim 1 wherein the decreasing of the pressure is delayed a selected period of time.
22. A method for separating residual water from a solvent, comprising the steps of:
providing a reservoir containing a solution comprising solvent containing residual water, the reservoir having an opening to allow the solution to drain from the reservoir, resisting the flow of the solution from the reservoir with a membrane layer comprising a first layer of fluoropolymer and a second layer of fluoropolymer, said membrane positioned in the series with the reservoir opening, said membrane supported on a screen layer, decreasing the pressure on the second side of said supported membrane relative to the first side of said supported membrane to thereby increase the flow rate of the solvent through the membrane;
therein removing said water from said solvent to provide a solvent with a water level of less than or equal to 1.0 ppm.
23. The method of claim 22 wherein said screen layer comprises a fluoropolymer polymer.
24. The method of claim 23 wherein said fluoropolymer comprises ETFE.
25. An apparatus for separating residual water from a solvent, comprising:
a reservoir containing a solution comprising solvent containing residual water, the reservoir having an opening to allow the solution to drain from the reservoir, a membrane layer comprising a first layer of fluoropolymer and a second layer of fluoropolymer, said membrane positioned in the series with the reservoir opening, a device for generating vacuum on said second layer of fluoropolymer, wherein said solvent containing water passes through said membrane layer therein removing water from said solvent to provide a solvent with a water level of less than or equal to 1.0 ppm.
CA2413799A 2000-06-29 2001-06-27 Water separation from solvent Expired - Lifetime CA2413799C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US21505500P 2000-06-29 2000-06-29
US60/215,055 2000-06-29
PCT/US2001/020555 WO2002002211A1 (en) 2000-06-29 2001-06-27 Water separation from solvent

Publications (2)

Publication Number Publication Date
CA2413799A1 true CA2413799A1 (en) 2002-01-10
CA2413799C CA2413799C (en) 2010-08-24

Family

ID=22801455

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2413799A Expired - Lifetime CA2413799C (en) 2000-06-29 2001-06-27 Water separation from solvent

Country Status (5)

Country Link
EP (1) EP1309391A4 (en)
JP (1) JP4150586B2 (en)
AU (1) AU2001275846A1 (en)
CA (1) CA2413799C (en)
WO (1) WO2002002211A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7935536B2 (en) 2005-07-27 2011-05-03 HorizonTechnology, Inc. System for water removal and solvent evaporation
ITFI20130016A1 (en) * 2013-01-21 2014-07-22 Aautomag S R L "CONTAINER FOR FILTER ELEMENTS, DEVICE USING THIS CONTAINER AND MICROFILTRATION METHOD"
KR102314988B1 (en) * 2014-12-26 2021-10-21 솔브레인 주식회사 Graphene Membrane Film and Method for Solvent Purification and Solvent Purification System using the Same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5579011A (en) * 1978-12-13 1980-06-14 Asahi Chem Ind Co Ltd Separation of oil emulsion
JPS5922603A (en) * 1982-07-27 1984-02-04 Kanegafuchi Chem Ind Co Ltd Method and device for separating two phase mixed liquid
DE68915554T2 (en) * 1988-01-26 1995-01-12 Asahi Glass Co Ltd For vapor permselective membrane.
JPH0822372B2 (en) * 1989-06-24 1996-03-06 日東電工株式会社 Composite porous membrane
JPH03249926A (en) * 1990-02-28 1991-11-07 Ishikawa Seisakusho:Kk Filter device
US5066403A (en) * 1990-07-12 1991-11-19 The United States Of America As Represented By The Secretary Of Commerce Process for separating azeotropic or close-boiling mixtures by use of a composite membrane, the membrane, and its process of manufacture
US5454951A (en) * 1993-03-05 1995-10-03 Minnesota Mining And Manufacturing Company Separation-science medium support plate
JP3094135B2 (en) * 1993-09-20 2000-10-03 東洋濾紙株式会社 Structure of filter sheet made of all fluororesin
US5552023A (en) * 1993-12-15 1996-09-03 Alliedsignal Inc. Recovery of spent deicing fluid
US5603900A (en) * 1995-05-19 1997-02-18 Millipore Investment Holdings Limited Vacuum filter device
US5976380A (en) * 1997-05-01 1999-11-02 Millipore Corporation Article of manufacture including a surface modified membrane and process
JPH11244667A (en) * 1998-02-27 1999-09-14 Mitsubishi Rayon Co Ltd Crude oil treating device and treatment of crude oil using the device

Also Published As

Publication number Publication date
EP1309391A1 (en) 2003-05-14
CA2413799C (en) 2010-08-24
AU2001275846A1 (en) 2002-01-14
JP4150586B2 (en) 2008-09-17
EP1309391A4 (en) 2005-04-27
JP2004501756A (en) 2004-01-22
WO2002002211A1 (en) 2002-01-10

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Effective date: 20210628