CA2518849A1 - Method for obtaining ethanol - Google Patents

Method for obtaining ethanol Download PDF

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Publication number
CA2518849A1
CA2518849A1 CA002518849A CA2518849A CA2518849A1 CA 2518849 A1 CA2518849 A1 CA 2518849A1 CA 002518849 A CA002518849 A CA 002518849A CA 2518849 A CA2518849 A CA 2518849A CA 2518849 A1 CA2518849 A1 CA 2518849A1
Authority
CA
Canada
Prior art keywords
feed solution
extractant
ethanol
carbon atoms
membrane
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
CA002518849A
Other languages
French (fr)
Other versions
CA2518849C (en
Inventor
Dan L. Fanselow
James S. Mrozinski
Todd W. Johnson
Brinda B. Lakshmi
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.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Company
Dan L. Fanselow
James S. Mrozinski
Todd W. Johnson
Brinda B. Lakshmi
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 3M Innovative Properties Company, Dan L. Fanselow, James S. Mrozinski, Todd W. Johnson, Brinda B. Lakshmi filed Critical 3M Innovative Properties Company
Publication of CA2518849A1 publication Critical patent/CA2518849A1/en
Application granted granted Critical
Publication of CA2518849C publication Critical patent/CA2518849C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/86—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by liquid-liquid treatment

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A method for obtaining ethanol from a feed solution utilizes an extractant comprising a mixture of at least one alkane and at least one aliphatic alcohol having the formula (FORMULA) wherein R1, R2, R3, R4, R5, and R7 each independently represent H or a straight chain alkyl group having from 1 to 4 carbon atoms; R6 represents a straight chain alkyl group having from 1 to 4 carbon atoms, or taken together R3 and R6 represent an alkylene group having from 1 to 4 carbon atoms; and ma and n independently represent 0, 1, 2, or 3, with the proviso that if R4 represents H, then at least two of R1, R2, and R3, or at least one of R5 and R7, are straight chain alkyl groups having from 1 to 4 carbon atoms.

Claims (10)

1. A method for obtaining ethanol from a feed solution comprising:
providing a feed solution comprising water and ethanol;
providing an extractant that is immiscible with the feed solution, the extractant comprising a mixture of:
at least one alkane; and at least one aliphatic alcohol having the formula wherein R1, R2, R3, R4, R5, and R7 each independently represent H or a straight chain alkyl group having from 1 to 4 carbon atoms, R6 represents a straight chain alkyl group having from 1 to 4 carbon atoms, or taken together R3 and R6 represent an alkylene group having from 1 to 4 carbon atoms, and m and n independently represent 0, 1, 2, or 3, with the proviso that if R4 represents H, then at least two of R1, R2, and R3, or at least one of R5 and R7, are straight chain alkyl groups having from 1 to 4 carbon atoms;
contacting the extractant with the feed solution; and at least partially removing ethanol from the extractant.
2. A method according to claim 1, further comprising:
providing a membrane having a plurality of micropores; and contacting the membrane with the extractant and the feed solution, wherein the extractant and the feed solution contact each other within at least one micropore of the membrane.
3. A method for obtaining ethanol from a feed solution comprising:

providing a feed solution comprising water and ethanol;
providing an extractant that is immiscible with the feed solution, the extractant comprising a mixture of:
at least one alkane having a first yield factor for extraction of ethanol from the feed solution; and at least one branched aliphatic alcohol having from 6 to 12 carbon atoms, wherein the branched aliphatic alcohol has a second yield factor for extraction of ethanol from the feed solution, wherein the mixture has a third yield factor for extraction of ethanol from the feed solution, and further wherein the third yield factor is greater than both of the first and second yield factors;
contacting the extractant with the feed solution; and at least partially removing ethanol from the extractant.
4. A method according to claim 3, further comprising:
providing a membrane having a plurality of micropores; and contacting the membrane with the extractant and the feed solution, wherein the extractant and the feed solution contact each other within at least one micropore of the membrane.
5. A method according to any of claims 1, 2, 3, or 4, wherein removing comprises distilling.
6. A method according to any of claims 1, 2, 3, or 4, wherein the process is carried out in a continuous manner.
7. A method according to any of claims 1, 2, 3, or 4, wherein the aliphatic alcohol is selected from 3,6-dimethylheptan-3-ol, 2,6-dimethylheptan-4-ol, or a combination thereof.
8. A method according to any of claims 2 or 4, wherein the microporous membrane has an average pore size in a range of from 0.1 micrometer to 0.4 micrometer.
9. A method according to any of claims 2 or 4, wherein the microporous membrane comprises polyolefin.
10. A method according to any of claims 2 or 4, wherein the microporous membrane comprises polypropylene.
CA2518849A 2003-03-13 2004-01-22 Method for obtaining ethanol Expired - Fee Related CA2518849C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/387,697 US7122709B2 (en) 2003-03-13 2003-03-13 Method for obtaining ethanol
US10/387,697 2003-03-13
PCT/US2004/001725 WO2004083158A1 (en) 2003-03-13 2004-01-22 Method for obtaining ethanol

Publications (2)

Publication Number Publication Date
CA2518849A1 true CA2518849A1 (en) 2004-09-30
CA2518849C CA2518849C (en) 2012-05-29

Family

ID=32961944

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2518849A Expired - Fee Related CA2518849C (en) 2003-03-13 2004-01-22 Method for obtaining ethanol

Country Status (12)

Country Link
US (1) US7122709B2 (en)
EP (2) EP1603855B1 (en)
JP (1) JP2006520398A (en)
CN (1) CN100355711C (en)
AT (1) ATE392405T1 (en)
AU (1) AU2004221906A1 (en)
BR (1) BRPI0408224B1 (en)
CA (1) CA2518849C (en)
DE (1) DE602004013129T2 (en)
RU (1) RU2005127414A (en)
WO (1) WO2004083158A1 (en)
ZA (1) ZA200508248B (en)

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Also Published As

Publication number Publication date
RU2005127414A (en) 2006-03-20
ZA200508248B (en) 2007-03-28
US20040181101A1 (en) 2004-09-16
JP2006520398A (en) 2006-09-07
DE602004013129D1 (en) 2008-05-29
WO2004083158A1 (en) 2004-09-30
BRPI0408224B1 (en) 2013-09-10
ATE392405T1 (en) 2008-05-15
BRPI0408224A (en) 2006-02-21
EP1603855B1 (en) 2008-04-16
CN1759086A (en) 2006-04-12
AU2004221906A1 (en) 2004-09-30
EP1878715B1 (en) 2013-02-27
DE602004013129T2 (en) 2009-05-20
CA2518849C (en) 2012-05-29
EP1603855A1 (en) 2005-12-14
EP1878715A1 (en) 2008-01-16
CN100355711C (en) 2007-12-19
US7122709B2 (en) 2006-10-17

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Effective date: 20180122