CN1696296A - Flash evaporation ferment method of synchronous gas stripping for producing ethanol - Google Patents
Flash evaporation ferment method of synchronous gas stripping for producing ethanol Download PDFInfo
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- CN1696296A CN1696296A CNA2005100133964A CN200510013396A CN1696296A CN 1696296 A CN1696296 A CN 1696296A CN A2005100133964 A CNA2005100133964 A CN A2005100133964A CN 200510013396 A CN200510013396 A CN 200510013396A CN 1696296 A CN1696296 A CN 1696296A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
A process for preparing alcohol by synchronous gas extracting, flash vaporizing and fermenting for shortening the period features that the inertial gas is introduced to the fermentor from its bottom for gas-extracting the mixed gas contening alcohol and the mixed gas is condensed in the condenser to obtain alcohol while the fermented substance comes in the flash evaporator via side channel for vacuum flash evaporizing to separate alcohol from water.
Description
Technical field
The present invention relates to a kind of production alcoholic acid flash evaporation ferment method of synchronous gas stripping, belong to fermentative Production ethanol technology.
Background technology
Ethanol is commonly called as ethanol, is important Organic Chemicals and solvent.Especially in the last few years, the aggravation of energy dilemma, the biomass material fermentative production of ethanol, advantage such as, combustion cleaning renewable with it more and more comes into one's own.
At present, the biomass material alcohol production generally adopts batch fermentation technology, because the increase meeting of fermenting process alcohol concn produces feedback inhibition to fermenting process, thereby throughput is low, and water consumption is big.The fermentation of vacuum fermentation, membrane sepn has appearred for this reason, gas is put forward technologies such as fermentation, extractive fermentation, when fermenting, the ethanol that shifts out on the throne.But aforesaid method is also had any problem in the application of industry.In the extractive fermentation process, be difficult to find highly selective and to thalline close friend's extraction agent.In the membrane sepn fermentation process, be difficult to solve film and pollute and the low problem of flux.It is simple that gas is proposed fermentation, has the industrialized prospect of being easy to, but that alcoholic acid shifts out efficient is low, is subjected to the restriction of air compressor performance.The comparison morning of vacuum fermentation research, alcoholic acid shifts out the efficient height, but keeps relatively difficulty of vacuum bottom fermentation, and energy consumption is also high.The improved form that has occurred this method afterwards makes fermentor tank and flash tank polyphone, has guaranteed to ferment and has carried out under normal pressure, and constantly shift out ethanol in flash tank, reduces the restraining effect to fermentation.The present invention is on this basis, gas is proposed fermentation combine with vacuum flashing.Gas is carried the by product CO that fermentation can utilize fermentation
2Remove the ethanol in the karusen, and can play stirring karusen.Synchronous gas is proposed flash distillation and can further be improved the separating power of product on the throne in conjunction with both advantages, thereby improves fermentation efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of production alcoholic acid flash evaporation ferment method of synchronous gas stripping, it is big that this method has a ferment strength, and ethanol shifts out efficient height, water-saving and energy-conservation characteristics.
The present invention is achieved by the following scheme, employing comprises that the synchronous gas of realization production alcoholic acid that circulating fermentor tank of band side arm and flash tank constitute carries flash distillation plant, wherein the side arm of fermentor tank has discharge gate and is connected with the middle part of flash tank, the fermentor tank bottom is provided with the inert gas import, is provided with the recirculated water pipe connecting in the flash tank bottom with fermentor tank top.Realize fermenting process simultaneously gas put forward method with flash distillation, it is characterized in that feeding CO from the bottom of fermentor tank
2Or N
2Or air, be 0.01～1m by every liter of fermented liquid air flow
3/ h, gas put forward contains the alcoholic acid gas mixture, enters condenser ethanol is wherein reclaimed, and the rare gas element that does not coagulate is delivered to the fermentor tank bottom by compressor, utilizes again; The karusen that enters flash tank by the fermentor tank side arm carries out flash distillation under 20～100mmHg pressure simultaneously, realizes the separation of second alcohol and water, wherein is rich in alcoholic acid steam and enters condenser and collect, and water is back to the fermentor tank recycling by the recirculated water pipe connecting.
Said process adopts the once reinforced batch fermentation process or the process of continuously fermenting of continuous charging.
The invention has the advantages that: propose combination with two simple technology of flash distillation by gas, strengthened the ethanol ability of shifting out on the throne in the ethanol fermentation process, the substrate of more effective elimination fermenting process suppresses phenomenon; Shorten fermentation period, improved ferment strength, also improved the throughput of reactor simultaneously; In the process of continuously fermenting, can add the feed liquid of high density, water saving; Fermented liquid is through the jar end liquid after the flash distillation, and usefulness more capable of circulation not only can be saved a large amount of waters, and great deal of bioactive substances can obtain preserving and utilizing in the fermented liquid simultaneously; Gas is carried the product that can obtain cleaning high density with flash distillation, has reduced the energy consumption of later stage rectifying; Present method also is applicable to the fermentation of acetone, butyric acid and glycerine.
Description of drawings:
Fig. 1 process flow diagram of the present invention, 1 is vacuum pump among the figure, 2 is condenser, 3 is flash tank, and 4 are the gas stripping gas outlet, and 5 is opening for feed, 6 fermentor tanks for the band side arm, 7 is condenser, 8 is the product tundish, 9 is compressor, and 10 is surge tank, and 11 is inert gas entrance, 12 is discharge gate, and 13 is inlet mouth, and 14 is the side arm discharge gate, 15 is recycle pump, and 16 is the product tundish
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail:
Embodiment 1
As Fig. 1, in the fermentor tank of band side arm, add the mash after the saccharification, glucose content 250g/L, and insert yeast and begin fermentation, inoculum size 4g/L, 32 ℃ of holding temperatures feed a small amount of CO
2, air flow is every liter of fermented liquid 0.01m
3/ h.Ferment after 18 hours, alcohol concn reaches 60g/L, opens the valve between fermentor tank and the flash tank, and strengthens air flow, begins to carry out synchronous gas and proposes the flash distillation operation.CO
2Air flow is every liter of karusen 0.1m
3/ h, the pressure of flash tank is kept 38mmHg, and the flow velocity that enters flash tank is every liter of karusen 10ml/min.Pass through CO
2The second alcohol and water of taking out of reclaims through condenser, and concentration is more than 40% (mass concentration).Karusen enters flash tank from fermentor tank, and the gas phase that flash distillation obtains is collected by condensation, alcohol concn more than 30% (mass concentration), be rich in do not have the glucose that fermented liquid phase through recycle pump, loop back fermentor tank and continue fermentation.Through 12 hours, the glucose concn of fermentor tank was less than 10g/L, fermentation ends.Compare the common fermentation process of same fermentation condition, fermentation time shortens more than 10 hours.
Identical with the condition of embodiment 1 fermentation beginning, propose the flash distillation operation simultaneously when beginning to carry out synchronous gas, and open the feed supplement valve, begin to carry out feed supplement, realize continuously fermenting, as Fig. 1.Every liter of mash 24ml/h of the speed of feed supplement, the concentration of feed supplement glucose is 500g/L.The high density feed supplement can reduce water consumption.Alcohol concn is kept 55g/L in the process of continuously fermenting, and the concentration of glucose is kept 80g/L, and cell concn is kept 10g/L.Ferment strength can reach 5.5gL
-1h
-1, be 3 times of common fermentation under the identical fermentation condition.
Claims (2)
1. produce the alcoholic acid flash evaporation ferment method of synchronous gas stripping for one kind, employing comprises that the synchronous gas of realization production alcoholic acid that circulating fermentor tank of band side arm and flash tank constitute carries flash distillation plant, wherein the side arm of fermentor tank has discharge gate and is connected with the middle part of flash tank, the fermentor tank bottom is provided with the inert gas import, is provided with the recirculated water pipe connecting in the flash tank bottom with fermentor tank top.Realize fermenting process simultaneously gas put forward method with flash distillation, it is characterized in that feeding CO from the bottom of fermentor tank
2Or N
2Or air, be 0.01～1m by every liter of fermented liquid air flow
3/ h, gas put forward contains the alcoholic acid gas mixture, enters condenser ethanol is wherein reclaimed, and the rare gas element that does not coagulate is delivered to the fermentor tank bottom by compressor, utilizes again; The karusen that enters flash tank by the fermentor tank side arm carries out flash distillation under 20～100mmHg pressure simultaneously, realizes the separation of second alcohol and water, wherein is rich in alcoholic acid steam and enters condenser and collect, and water is back to the fermentor tank recycling by the recirculated water pipe connecting.
2. method according to claim 1 is characterized in that adopting the once reinforced batch fermentation process or the process of continuously fermenting of continuous charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100133964A CN1321188C (en) | 2005-05-08 | 2005-05-08 | Flash evaporation ferment method of synchronous gas stripping for producing ethanol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100133964A CN1321188C (en) | 2005-05-08 | 2005-05-08 | Flash evaporation ferment method of synchronous gas stripping for producing ethanol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1696296A true CN1696296A (en) | 2005-11-16 |
| CN1321188C CN1321188C (en) | 2007-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100133964A Expired - Fee Related CN1321188C (en) | 2005-05-08 | 2005-05-08 | Flash evaporation ferment method of synchronous gas stripping for producing ethanol |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101736060B (en) * | 2010-01-08 | 2012-07-04 | 河南科技大学 | Method for producing ethanol by using ionic liquid |
| CN101928200B (en) * | 2009-06-19 | 2013-04-17 | 青岛生物能源与过程研究所 | Method and equipment for separating volatile organic matters from fermentation product in situ |
| CN104045515A (en) * | 2014-06-13 | 2014-09-17 | 东辰控股集团有限公司 | Hyaluronic acid solution vacuum recycling system |
| CN106987523A (en) * | 2017-03-06 | 2017-07-28 | 上海交通大学 | A kind of method and system continuously fermented |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634086A1 (en) * | 1988-07-08 | 1990-01-12 | Labo Electronique Physique | TEMPORAL SUB-SAMPLING DEVICE AND MOTION-COMPENSATED TIME INTERPOLATION IN INTERLACED IMAGE SEQUENCE, USE OF SUCH A DEVICE IN CODING AND DECODING DEVICES OF HIGH-DEFINITION TELEVISION IMAGE TRANSMISSION SYSTEM , AND DEVICES FOR ENCODING AND DECODING FOR SUCH A SYSTEM |
| AU697766B2 (en) * | 1992-12-31 | 1998-10-15 | Metallgesellschaft Aktiengesellschaft | Process of producing beer |
| CN1131192C (en) * | 2001-05-25 | 2003-12-17 | 清华大学 | One-step composite extraction and rectification process of preparing absolute alcohol |
-
2005
- 2005-05-08 CN CNB2005100133964A patent/CN1321188C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928200B (en) * | 2009-06-19 | 2013-04-17 | 青岛生物能源与过程研究所 | Method and equipment for separating volatile organic matters from fermentation product in situ |
| CN101736060B (en) * | 2010-01-08 | 2012-07-04 | 河南科技大学 | Method for producing ethanol by using ionic liquid |
| CN104045515A (en) * | 2014-06-13 | 2014-09-17 | 东辰控股集团有限公司 | Hyaluronic acid solution vacuum recycling system |
| CN106987523A (en) * | 2017-03-06 | 2017-07-28 | 上海交通大学 | A kind of method and system continuously fermented |
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| Publication number | Publication date |
|---|---|
| CN1321188C (en) | 2007-06-13 |
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