CN102070400A - Membrane separation method of solid state fermentation ethanol - Google Patents
Membrane separation method of solid state fermentation ethanol Download PDFInfo
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- CN102070400A CN102070400A CN2010105524306A CN201010552430A CN102070400A CN 102070400 A CN102070400 A CN 102070400A CN 2010105524306 A CN2010105524306 A CN 2010105524306A CN 201010552430 A CN201010552430 A CN 201010552430A CN 102070400 A CN102070400 A CN 102070400A
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a method for separating solid state fermentation ethanol through vapor permeation in the technical field of the production of fuel ethanol. The method comprises the following steps: using a water vapor interlayer to evaporate solid state fermentation ethanol and partial water, and ensuring the obtained ethanol-water gaseous mixture to pass through an alcohol permselective membrane so as to greatly increase the concentration of ethanol. The method uses water vapor to extract ethanol and separate solid material and ethanol in a fermentation tank, thus the obtained mixture only contains ethanol and water and the subsequent separation operation can be performed easily and conveniently. Compared with the other methods for separating the ethanol-water mixture, the method has the advantages of high separation efficiency, less energy consumption, low cost, no pollution, convenient operation, easy amplification method and the like and has industrialization prospect.
Description
Technical field
The present invention relates to a kind of method of membrane sepn solid state fermentation of ethanol through, belong to the alcohol fuel preparing technical field.
Background technology
Biomass energy is as the Sustainable development energy, and its application development space is bigger, and biomass energy accounts for 11% of power supply at present, and particularly biomass fuel output increases fast in recent years, and the whole world has welcome the gold period of biomass energy development.
Biomass ferment prepares the heat subject that the alcohol fuel technology is the countries in the world extensive concern.Generally speaking, the ethanol of fermentative production at first improves alcohol concn by distillation, this process energy consumption height, pollute big, equipment cost is high, and can not separate azeotrope.
Advantages such as infiltration evaporation is simple with its equipment, selectivity good, single-stage resolution height, rate of mass transfer are big, pollution-free and easy to operate, easy amplification; become the focus of world research gradually, in industrial circles such as petrochemical complex, medicine, food and environment protection, have broad application prospects and market.The infiltration evaporation technology is realizing industrialization aspect the high concentration ethanol dehydration, but still is in the laboratory study stage collect ethanol from the low-concentration ethanol aqueous solution aspect.This is because membrane flux and separation factor have very big influence to the alcohol production cost, has the scholar to point out, when the ethanol of 1～5wt% is purified to 95wt%, if will make the membrane sepn cost reduce, separation factor must reach more than 20, and in present research level, separation factor only is about 12.
Water steam extraction solid fermentation ethanol of the present invention, the ethanol mass percent can reach more than 20% in the mixing steam, than general liquid state fermentation ethanol height.The mixture that adopts the vapor permeation separation and Extraction to come out by preferential alcohol permselective membrane, improves alcohol concn.Vapor permeation prepares alcohol fuel, and its advantage has that energy waste is low, permeation flux is big, film pollutes advantages such as little and film long service life, is suitable for commercial run.
Summary of the invention
The purpose of this invention is to provide the solid-state alcoholic acid method of a kind of membrane sepn, improve separation efficiency, reduce separation costs, reduce energy consumption, avoid environmental pollution.
The method of described vapor permeation separate solid fermenting alcohol comprises following concrete steps:
(1) feed in the solid-state fermenter with the water vapor that is not less than 150 ℃, with the heating of solid state fermentation material interlayer, make that water and the ethanol in the material gasifies, the ethanol that extracts and the mixture temperature of water are not less than 90 ℃;
(2) gas mixture with ethanol and water directly enters membrane separation unit seeing through side vacuum pump extracting vacuum through pipeline, keeps normal pressure in material side, and making has impellent between the film both sides.Temperature is not less than 80 ℃ in the membrane sepn process.
(3) with condenser infiltration component is carried out the condensation collection through side, obtaining the ethanolic soln of high density.
Alcohol concn is 20-30wt% in the alcohol-water gas mixture that described water vapor interlayer extracts.
Described membrane separation unit is made up of membrane module and preferential saturating pure composite membrane.Preferential saturating pure composite membrane is made up of the active separating layer of avidity by supporter with to ethanol.
Described support body material is a polyester.
It is described that ethanol is had optionally the mould material of active coating is polydimethylsiloxane, poly-trimethyl silicane propine, fluorinated polymkeric substance, polypropylene, polyhutadiene, styrene-butadiene rubber(SBR) or nitrile rubber.Wherein the thickness of active separating layer can be adjusted between 20-60 μ m according to actual needs.
What the configuration of described composite membrane depended on supporter is configured as tubular type, rolling, flat board or tubular fibre formula; Tubular type is inner membrance or adventitia.
Beneficial effect of the present invention is:
(1) adopts vapor permeation separate solid fermenting alcohol, separation efficiency height;
(2) technology is simple, and is easy to operate, is easy to amplify;
(3) cut down the consumption of energy the non-environmental-pollution problem;
(4) reduce cost, solved the isolating difficult problem of alcohol fuel, promoted the biorefinery technical development.
Description of drawings
Fig. 1 is the process flow diagram of vapor permeation separate solid fermenting alcohol.
Number in the figure:
The 1-solid-state fermentation tank; The 2-membrane separation unit; The 3-condenser system; The 4-vacuum pump; The A-water vapor; The gas mixture of B-ethanol and water; The C-infiltration component.
Embodiment
The invention provides a kind of method of membrane sepn solid state fermentation of ethanol through, the present invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, solid-state fermentation tank 1 is connected with the material side of membrane separation unit 2, and the side that sees through of membrane separation unit 2 is connected with condenser system 3 and vacuum pump 4.Membrane separation unit 2 adopts by supporter and is deposited on has the flat preferential alcohol permselective membrane that active coating is optionally formed to ethanol on the supporting body surface.The material of supporter is a polyester; Have optionally to ethanol that the material of active coating is a polydimethylsiloxane, thickness is 50 μ m.
During separating alcohol, carry out as follows:
(1) feed in the solid-state fermenter 1 with the water vapor A that is not less than 150 ℃, with the heating of solid state fermentation material interlayer, make that water and the ethanol in the material gasifies, the gas mixture B temperature of ethanol that extracts and water is not less than 90 ℃.
(2) the gas mixture B with ethanol and water directly enters membrane separation unit 2 through pipeline, seeing through side with vacuum pump 4 extracting vacuum, keeps normal pressure in material side, and making has impellent between the film both sides.Temperature is not less than 80 ℃ in the membrane sepn process.
(3) carry out the condensation collection through side with 3 couples of infiltration component C of condenser, obtaining the ethanolic soln of high density.
Claims (8)
1. the method for a membrane sepn solid state fermentation of ethanol through is characterized in that, may further comprise the steps:
(1) make water vapor pass through solid-state fermenter, to material interlayer heating in the jar, with ethanol and the aqueous vaporization in the solid fermentation thing;
(2) allow and have the alcoholic acid mixing steam by adopting the membrane separation unit of preferential alcohol permselective membrane, see through side vacuum pump extracting vacuum at membrane separation unit, keep normal pressure in material side, making has impellent between the film both sides, make alcohol vapour pass through separatory membrane, the side that sees through at film is collected by condenser, obtains spissated ethanol.
2. the method for a kind of membrane sepn solid state fermentation of ethanol through according to claim 1 is characterized in that, described preferential alcohol permselective membrane is by supporter and be deposited on ethanol is had optionally active coating form on the supporting body surface.
3. the method for a kind of membrane sepn solid state fermentation of ethanol through according to claim 2 is characterized in that, the material of described supporter is a polyester; It is described that ethanol is had optionally the material of active coating is polydimethylsiloxane, poly-trimethyl silicane propine, tetrafluoroethylene, polyvinylidene difluoride (PVDF), polyhexafluoropropylene, polypropylene, polyhutadiene, styrene-butadiene rubber(SBR) or nitrile rubber.
4. the method for a kind of membrane sepn solid state fermentation of ethanol through according to claim 1 is characterized in that, described preferential alcohol permselective membrane is tubular type, rolling, flat board or tubular fibre form membrane;
5. the method for a kind of membrane sepn solid state fermentation of ethanol through according to claim 4 is characterized in that, the preferential alcohol permselective membrane of described tubular type is adventitia or inner membrance.
6. the method for a kind of membrane sepn solid state fermentation of ethanol through according to claim 1 is characterized in that, described pressure when having the alcoholic acid mixing steam and carrying out the permeation sepn process is 50-200Pa.
7. the method for a kind of membrane sepn solid state fermentation of ethanol through according to claim 1 is characterized in that, the temperature of described water vapour is not less than 150 ℃; The described temperature of alcoholic acid mixing steam when solid-state fermenter flows out that have is not less than 90 ℃, and temperature is not less than 80 ℃ in the membrane sepn process.
8. the method for a kind of membrane sepn solid state fermentation of ethanol through according to claim 1 is characterized in that, described have optionally to ethanol that the thickness of active coating is 20-60 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105524306A CN102070400A (en) | 2010-11-18 | 2010-11-18 | Membrane separation method of solid state fermentation ethanol |
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| CN2010105524306A CN102070400A (en) | 2010-11-18 | 2010-11-18 | Membrane separation method of solid state fermentation ethanol |
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| CN102070400A true CN102070400A (en) | 2011-05-25 |
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| CN2010105524306A Pending CN102070400A (en) | 2010-11-18 | 2010-11-18 | Membrane separation method of solid state fermentation ethanol |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351645A (en) * | 2011-08-19 | 2012-02-15 | 天津大学 | Membrane separation composite rectification refining method and device for ethanol product of biological butanol device |
| CN103601329A (en) * | 2013-11-20 | 2014-02-26 | 杭州上一环保技术有限公司 | Alcohol-water separation recycling device of fischer-tropsch synthesis water |
| CN110468162A (en) * | 2019-07-26 | 2019-11-19 | 清华大学 | Once phase-change method prepares the production process and device of alcohol fuel |
Citations (4)
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|---|---|---|---|---|
| CN1450166A (en) * | 2003-05-13 | 2003-10-22 | 南京工业大学 | Method for preparing absolute ethanol by biological substance fermentation and inembrane permeation vaporization |
| CN101153290A (en) * | 2007-08-31 | 2008-04-02 | 南京工业大学 | Ethyl alcohol in situ separating method for improving biomass ferment strength |
| CN101157890A (en) * | 2007-08-14 | 2008-04-09 | 天津大学 | Fuel ethanol production equipment and method |
| CN101235389A (en) * | 2008-03-04 | 2008-08-06 | 南京工业大学 | Fermentation and infiltration vaporization coupling technique for producing ethanol |
-
2010
- 2010-11-18 CN CN2010105524306A patent/CN102070400A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450166A (en) * | 2003-05-13 | 2003-10-22 | 南京工业大学 | Method for preparing absolute ethanol by biological substance fermentation and inembrane permeation vaporization |
| CN101157890A (en) * | 2007-08-14 | 2008-04-09 | 天津大学 | Fuel ethanol production equipment and method |
| CN101153290A (en) * | 2007-08-31 | 2008-04-02 | 南京工业大学 | Ethyl alcohol in situ separating method for improving biomass ferment strength |
| CN101235389A (en) * | 2008-03-04 | 2008-08-06 | 南京工业大学 | Fermentation and infiltration vaporization coupling technique for producing ethanol |
Non-Patent Citations (3)
| Title |
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| YI-CHIEH WANG等: "Comparison between the pervaporation and vapor permeation performances of polycarbonate membranes", 《EUROPEAN POLYMER JOURNAL》 * |
| 李洪亮等: "蒸汽渗透技术及其应用", 《膜科学与技术》 * |
| 陈翠仙等: "《渗透蒸发和蒸气渗透》", 31 March 2004, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351645A (en) * | 2011-08-19 | 2012-02-15 | 天津大学 | Membrane separation composite rectification refining method and device for ethanol product of biological butanol device |
| CN103601329A (en) * | 2013-11-20 | 2014-02-26 | 杭州上一环保技术有限公司 | Alcohol-water separation recycling device of fischer-tropsch synthesis water |
| CN110468162A (en) * | 2019-07-26 | 2019-11-19 | 清华大学 | Once phase-change method prepares the production process and device of alcohol fuel |
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Application publication date: 20110525 |