CN101891590B - Method for producing anhydrous ethanol from fermentation liquid by gas adsorption - Google Patents
Method for producing anhydrous ethanol from fermentation liquid by gas adsorption Download PDFInfo
- Publication number
- CN101891590B CN101891590B CN 201010245025 CN201010245025A CN101891590B CN 101891590 B CN101891590 B CN 101891590B CN 201010245025 CN201010245025 CN 201010245025 CN 201010245025 A CN201010245025 A CN 201010245025A CN 101891590 B CN101891590 B CN 101891590B
- Authority
- CN
- China
- Prior art keywords
- ethanol
- adsorption
- fermentation liquid
- desorb
- gas
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The invention discloses a method for producing anhydrous ethanol from fermentation liquid by gas adsorption, which comprises the following steps of: introducing fermentation liquid into a separating tank; separating ethanol, CO2, air and part of steam from fermentation liquid by a vacuum pump; returning the fermentation liquid to a fermenting tank for continuously fermenting; heating the separated ethanol mixing gas to 80-100 DEG C by a heat exchanger and sequentially delivering into two to six drainable molecular sieve adsorbing columns for alternately adsorbing and desorbing; delivering desorbing hydrous ethanol into two to six adsorbing beds provided with biomass absorbents for adsorbing and desorbing; and delivering ethanol gas at the tower top into a condenser for condensing to obtain more than 99.2% of anhydrous ethanol. The invention simplifies an ethanol dehydrating process and reduces the energy consumption and water consumption of ethanol dehydration.
Description
Technical field
The present invention relates to the production method of dehydrated alcohol, especially relates to a kind of method that Gas Phase Adsorption is produced dehydrated alcohol from fermentation liquid.
Background technology
Ethanol content is generally 8%-12% in the fermentation liquid, and all the other major parts are water, and how ethanol being separated from fermentation liquid is the key that dehydrated alcohol is produced.Traditional method is that the employing distillation method obtains the ethanol about 95% at present, adopts the methods such as azeotropic distillation, extractive distillation with salt, molecular sieve adsorption to dewater again, and obtains dehydrated alcohol.Chinese patent 200810033031.1 discloses the method and apparatus that a kind of fermentation liquor distillation-free whole molecular sieve fractionation by adsorption prepares fuel alcohol.Its method is: at first be the fermenting raw materials liquid of 1%-15% with ethanol content, the mode through air lift or decompression extraction obtains 20～40 ℃ alcohol steam; Again alcohol vapour is passed into the hydrophobic silicon zeolite adsorbent bed after being heated to 100-120 ℃, ethanol is adsorbed by hydrophobic adsorbent, and water is discharged from; Again 100-140 ℃ of mode that adopts decompression desorption or carrier gas desorption with the ethanol content of hydrophobic silicon zeolite adsorbent absorption greater than 95% alcohol in high concentration desorption, again the alcohol in high concentration steam that obtains is passed through the 3A adsorption bed, Trace water divides in the alcohol to remove, and obtains at last the fuel alcohol that ethanol content is 99.2%-99.9%.
Summary of the invention
The object of the present invention is to provide a kind of directly technique of gas phase separation second alcohol and water from fermentation liquid, to realize simplifying the rectifying link, realize the simplification of technological process, reduce energy consumption.
Its ultimate principle is to adopt the two-stage adsorption unit to carry out fractionation by adsorption, first step adsorption unit adopts the hydrophobic type molecular sieve adsorption, the hydrophobic type molecular sieve has stronger adsorptive power to ethanol, and relatively poor to the adsorptive power of water, the ethanol that is adsorbed on the hydrophobic type molecular sieve is carried out can obtaining aqueous ethanol (90%-95%) after the desorb; It is sorbent material that second stage adsorption unit adopts starch-based bio matter, and starch-based bio matter sorbent material has stronger adsorption selectivity to glassware for drinking water, can obtain dehydrated alcohol by biomass absorbent.
The present invention includes following steps:
(1) fermentation liquid is pumped in the separating tank by sterile circulating, with ethanol, CO
2, air and part water vapour isolates fermentation liquid, mash turns back to fermentor tank relaying supervention ferment, the alcohol concn during controlled fermentation in the mash is lower than 2%;
(2) isolated ethanol gas mixture in the step (1) is heated to 80 ℃-100 ℃ by interchanger, sends into successively the sorption and desorption that hockets in 2-6 the hydrophobic type molecular sieve adsorption post, its adsorption temp is 80 ℃-100 ℃; Adsorption time is 5min-10min; Ethanol is by the hydrophobic type molecular sieve adsorption during absorption, and desorb is to pass into dry air or N in adsorption column
2The ethanol that is adsorbed in the sorbent material is carried out desorb, obtain the aqueous ethanol of concentration 90%-95% after the desorb;
(3) to send into 2-6 the adsorption bed that biomass adsorbent is housed its adsorption temp of sorption and desorption that hockets be 80 ℃-95 ℃ to the aqueous ethanol that obtains of desorb, adsorption time 5min-15min; Water is adsorbed by biomass adsorbent during absorption, and the alcohol gas of cat head is sent into condenser and obtained 99.2% above concentration dehydrated alcohol through condensation;
(4) air or N
2Recycle after the force (forcing) pump pressurization, thus reduce production costs.
Described biomass adsorbent be by one or more the mixture in potato powder, Semen Maydis powder, sweet potato powder or the Tapioca Starch with the compound enzymic preparation of α-amylase, saccharifying enzyme or α-amylase and saccharifying enzyme, form product through enzymolysis, drying, pulverizing.
Described biomass adsorbent is to be in mass ratio sweet potato flour 100, xanthan gum 5-10, the granular adsorbent that cycloheptaamylose 8-12 makes after mixing by sweet potato flour, xanthan gum, cycloheptaamylose.
Advantage of the present invention: (1) has simplified ethanol dehydration technique, has saved ethanol dehydration equipment and initial cost; (2) reduce the energy consumption of ethanol dehydration, reduced the water consumption of ethanol dehydration link.
Description of drawings
Accompanying drawing is the schema of the embodiment of the invention 1.
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Embodiment 1: with reference to accompanying drawing:
(1) fermentation liquid is sent in the separating tank 2 by sterile circulating pump 1-1, aspirated ethanol, CO by vacuum pump 3
2, air separates with fermentation liquid with part water vapour, mash sends back to fermentor tank 4 relaying supervention ferment by aseptic pump 1-2, the alcohol concn during controlled fermentation in the mash is for being lower than 2%;
(2) the isolated ethanol gas mixture of step (1) is heated to 80 ℃ through interchanger 5, sends into successively the sorption and desorption that hockets among hydrophobic type molecular sieve adsorption post 6-1 and the 6-2, when adsorption column 6-1 adsorbed, adsorption column 6-2 carried out desorb; After adsorption column 6-1 absorption is finished, enter desorption phase, adsorption column 6-2 then enters absorption phase by desorb.Its adsorption temp is 80 ℃; Adsorption time is 5min; Ethanol is adsorbed by the hydrophobic molecule sieve adsorbant during absorption, and overhead vapours can be used for spice or directly discharging after condenser 7-1 condensation, and its desorb is to pass into dry air or N in adsorption column
2The ethanol that is adsorbed in the hydrophobic molecule sieve adsorbant is carried out desorb, and the alcohol gas after the desorb is sent into the second stage adsorption column that biomass adsorbent is housed and is adsorbed;
(3) air-ethanol-water mixed gas after the desorb enters the sorption and desorption that hockets among adsorption column 6-3 that biomass adsorbent is housed and the 6-4 in the step (2); The biomass adsorbent of present embodiment be by one or more the mixture in potato powder, Semen Maydis powder, sweet potato powder or the Tapioca Starch with the compound enzymic preparation of α-amylase, saccharifying enzyme or α-amylase and saccharifying enzyme, form product through enzymolysis, drying, pulverizing; Adsorption temp is 80 ℃, and adsorption time is 15min, and water is adsorbed by biomass adsorbent during absorption, and overhead gas is sent into condenser 7-2 and obtained concentration greater than 99.2% dehydrated alcohol through condensation;
(4) air can recycle after force (forcing) pump pressurization, thereby reduces production costs.
Embodiment 2:
(1) fermentation liquid is pumped in the separator by sterile circulating, aspirates ethanol, CO by vacuum pump
2, air separates with fermentation liquid with part water vapour, mash is got back to fermentor tank relaying supervention ferment, the alcohol concn during controlled fermentation in the mash is for being lower than 2%;
(2) the isolated ethanol gas mixture of step (1) is heated to 100 ℃ through interchanger, send successively the sorption and desorption that hockets in six hydrophobic type molecular sieve adsorption posts, when wherein three adsorption columns adsorbed, other three adsorption columns carried out desorb; After three adsorption column absorption are finished, change desorption phase over to, three desorption columns then enter absorption phase by desorb.Its adsorption temp is 100 ℃; Adsorption time is 10min; Ethanol is adsorbed by the hydrophobic type adsorbent of molecular sieve during absorption, and its desorb is to pass into dry air or N in adsorption column
2The ethanol that is adsorbed in the sorbent material is carried out desorb, and the alcohol gas after the desorb is sent into the second stage adsorption column that biomass adsorbent is housed and is adsorbed;
(3) air-ethanol-water mixed gas after the desorb enters the sorption and desorption that hockets in the adsorption bed that biomass adsorbent is housed in the step (2); The biomass adsorbent of present embodiment is to be in mass ratio sweet potato flour 100, xanthan gum 5-10, the granular adsorbent that cycloheptaamylose 8-12 makes after mixing by sweet potato flour, xanthan gum, cycloheptaamylose.Adsorption temp is 95 ℃, and adsorption time is 5min, and water is adsorbed by biomass adsorbent during absorption, and overhead gas is sent into condenser and obtained concentration greater than 99.2% dehydrated alcohol through condensation;
(4) air can recycle after force (forcing) pump pressurization, thereby reduces production costs.
Claims (1)
1. the method that Gas Phase Adsorption is produced dehydrated alcohol from fermentation liquid is characterized in that, may further comprise the steps:
(1) fermentation liquid is pumped in the separating tank by sterile circulating, with ethanol, CO
2, air and part water vapour isolates fermentation liquid, mash turns back to fermentor tank relaying supervention ferment, the alcohol concn during controlled fermentation in the mash is lower than 2%;
(2) isolated ethanol gas mixture in the step (1) is heated to 80 ℃-100 ℃ by interchanger, sends into successively the sorption and desorption that hockets in 2-6 the hydrophobic type molecular sieve adsorption post, its adsorption temp is 80 ℃-100 ℃; Adsorption time is 5-10min; Ethanol is by the hydrophobic type molecular sieve adsorption, and desorb is to pass into dry air or N in adsorption column
2Ethanol is carried out desorb, obtain the aqueous ethanol that concentration is 90%-95% after the desorb;
(3) aqueous ethanol that obtains of desorb is sent into 2-6 the adsorption bed that biomass adsorbent the is housed sorption and desorption that hockets, and its adsorption temp is 80 ℃-95 ℃, adsorption time 5-15min; Water is adsorbed by biomass adsorbent during absorption, and the alcohol gas of cat head is sent into condenser obtains 99.2% above concentration through condensation dehydrated alcohol;
Described biomass adsorbent be by one or more the mixture in potato powder, Semen Maydis powder, sweet potato powder or the Tapioca Starch with the compound enzymic preparation of α-amylase, saccharifying enzyme or α-amylase and saccharifying enzyme, the product that forms through enzymolysis, drying, pulverizing;
(4) air or N
2Recycle after the force (forcing) pump pressurization, thus reduce production costs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010245025 CN101891590B (en) | 2010-08-05 | 2010-08-05 | Method for producing anhydrous ethanol from fermentation liquid by gas adsorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010245025 CN101891590B (en) | 2010-08-05 | 2010-08-05 | Method for producing anhydrous ethanol from fermentation liquid by gas adsorption |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101891590A CN101891590A (en) | 2010-11-24 |
| CN101891590B true CN101891590B (en) | 2013-03-13 |
Family
ID=43100970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010245025 Expired - Fee Related CN101891590B (en) | 2010-08-05 | 2010-08-05 | Method for producing anhydrous ethanol from fermentation liquid by gas adsorption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101891590B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070401B (en) * | 2011-01-27 | 2013-12-04 | 南京大学 | Energy-saving process for preparing absolute ethanol from bioethanol aqueous solution |
| CN102351646B (en) * | 2011-09-16 | 2014-05-21 | 南京工业大学 | Method for separating ethanol from fermentation liquor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1895772A (en) * | 2006-06-02 | 2007-01-17 | 郑州大学生化工程中心 | Adsorbent for dewatering alcohol |
| CN101085717A (en) * | 2007-06-01 | 2007-12-12 | 蓝仁水 | Method for rectifying ethanol by three-tower heat integration device |
| CN101225017A (en) * | 2008-01-24 | 2008-07-23 | 复旦大学 | Method and device for producing fuel alcohol by fermentation liquor distillation-free whole molecular sieve adsorptive separation |
-
2010
- 2010-08-05 CN CN 201010245025 patent/CN101891590B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1895772A (en) * | 2006-06-02 | 2007-01-17 | 郑州大学生化工程中心 | Adsorbent for dewatering alcohol |
| CN101085717A (en) * | 2007-06-01 | 2007-12-12 | 蓝仁水 | Method for rectifying ethanol by three-tower heat integration device |
| CN101225017A (en) * | 2008-01-24 | 2008-07-23 | 复旦大学 | Method and device for producing fuel alcohol by fermentation liquor distillation-free whole molecular sieve adsorptive separation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101891590A (en) | 2010-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104086614B (en) | A kind of preparation method being applicable to industrial Fructus Monordicae extract | |
| CN101648847B (en) | Composite process of fuel alcohol and edible alcohol | |
| CN103951718A (en) | Method used for preparing high-purity gardenoside and crocin from gardenia jasminoides ellis | |
| Huang et al. | Production of anhydrous biobutanol using a biosorbent developed from oat hulls | |
| CN102078339B (en) | Method for enriching and purifying common phellinus fungus general flavone in common phellinus fungus | |
| CN101891590B (en) | Method for producing anhydrous ethanol from fermentation liquid by gas adsorption | |
| CN112159747A (en) | Method for removing fusel oil in yellow wine | |
| CN102850408A (en) | Method for preparing xylose and arabinose by using simulated moving chromatography | |
| CN102351646B (en) | Method for separating ethanol from fermentation liquor | |
| AU2010329971B2 (en) | Method for obtaining ethanol during fermentation | |
| CN101735012A (en) | Method for separating and extracting 2,3-butanediol | |
| CN101225017A (en) | Method and device for producing fuel alcohol by fermentation liquor distillation-free whole molecular sieve adsorptive separation | |
| CN107021872B (en) | Method for separating and purifying water-containing isopropanol | |
| CN101024846A (en) | Method and apparatus for preparing fuel alcohol by fermented liquid steam phase adsorption separation | |
| CN101670191A (en) | Adsorption concentration method and device of volatile organic matter in solution | |
| CN102477035B (en) | Cleaning process for extracting and purifying tabersonine from voacango Africana stapf seeds | |
| CN103570647A (en) | Method for preparing high-purity paclitaxel from taxus chinensis cell culture fluid | |
| CN104974013B (en) | A kind of technique of utilization continuous chromatography technology separating butanol zymotic fluid | |
| US8766019B2 (en) | Method for separating butanol | |
| US9108897B2 (en) | Method for desorbing and regenerating butanol-adsorbing hydrophobic macroporous polymer adsorbent | |
| CN101265159A (en) | Method for preparing Jerusalem artichoke fuel alcohol by using hydrophobic adsorbent distillation-free energy-saving technique | |
| CN102658095A (en) | Alcohol adsorption material and application and using method thereof | |
| CN109651087B (en) | Process for separating butanetriol fermentation liquor by using continuous chromatography technology | |
| KR102474634B1 (en) | Butyric acid adsorbent using zeolite and butyric acid adsorption separation method using the same | |
| CN103103063B (en) | Technology for producing distilled wine by use of grape skin residue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20150805 |
|
| EXPY | Termination of patent right or utility model |