CN101250557B - Method for producing alcohol by starchy materials big tank and non-vector immobilized yeast continuous fermentation - Google Patents
Method for producing alcohol by starchy materials big tank and non-vector immobilized yeast continuous fermentation Download PDFInfo
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- CN101250557B CN101250557B CN2008100138834A CN200810013883A CN101250557B CN 101250557 B CN101250557 B CN 101250557B CN 2008100138834 A CN2008100138834 A CN 2008100138834A CN 200810013883 A CN200810013883 A CN 200810013883A CN 101250557 B CN101250557 B CN 101250557B
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Abstract
The invention relates to a method for using starchiness as raw materials to produce alcohol through continuously fermenting with immobilized yeast without a carrier in a big tank, which comprises following steps: pre-processing the raw material of the starchiness, continuously fermenting and distilling with the immobilized yeast without the carrier, wherein the single tank volume of fermentation tanks is increased in continuous fermentation with immobilized yeast without the carrier, reducing the number of the fermentation tanks, shortening the connection length of fermentation, simultaneously, adopting slope hearth, reducing the formation of retention materials, prearranging a fermentation tank, and adopting a multi-tank feed adding method feed sugar solution to the prearranged fermentation tank and a fermentation seed tank. The method of the invention provides a technique with high safety and high efficiency for producing the alcohol through continuously fermenting, simultaneously, the availability ratio of starch is also increased, the fermentation time is shortened, the wastewater emission is reduced, the load of wastewater treatment is alleviated, and the production cost is lowered.
Description
Technical field
The present invention relates to the method that starchy material is big jar, the carrier-free immobilization yeast continuously ferments produces alcohol, belong to the microbial fermentation engineering technical field.
Background technology
Zymamsis be yeast fermentable sugar, generate the process of alcohol and carbonic acid gas through the effect of zymase in the cell, it is the Biochemical processes of a complexity.
The traditional zymamsis of China is at the laboratory culture distiller's yeast, and distiller's yeast arrives big distiller's yeast at last through multistage enlarged culturing, then with the seed of big distiller's yeast as fermentation.Mainly adopt batch fermentation aspect fermentation, the volume of fermentor tank is less.
Continuous development along with fermentation technique; continuously ferment and progressively be familiar with and accept by people; and constantly be applied in the plant size production; but aborning because the seeding tank strain quality is difficult to control; factors such as big jar delay, buildup also make the advantage of producing of much continuously fermenting embody, and the serious development that is also restricting production.The influence of factors such as the particularly microbiological contamination of ferment-seeded jar, yeast unit consumption height makes the production alcohol transformation efficiency that continuously ferments on the low side, Alcohol Production cost height is so present fermentation production process still is in intermittence, continuous transformation semicontinuous, these several modes continuously and replacement.So not only increase the sewage load, and caused usage ratio of equipment reduction, present situation that the starch transformation efficiency is low.Pollution, the resource utilization of actual environment is low, energy consumption is high, very big degree must restricted the survival and development of enterprise.
CN1661024 (200410094105.4) provides a kind of method that improves fermentation alcohol content of alcohol thick mash from raw material of starchiness, with traditional distiller's yeast as fermentation accelerant, be applied in the alcohol thick mash fermentation of starchy material, on the one hand, contain the useful enzyme of higher saccharifying enzyme and other zymamsiss system in the distiller's yeast, but the instead of part saccharifying enzyme, and cooperative saccharification enzyme and yeast carry out zymamsis, improve fermenting speed, shorten fermentation period 6～15h; On the other hand, contain the protection factors such as ergosterol, unsaturated longer chain fatty acid in the distiller's yeast, can help yeast opposing alcohol toxicity, keep the yeast cell vigor, make the ethanol concn of final karusen improve 1 °～2 °.
CN1814763 (200510048708.5) provides a kind of method that improves alcohol yield fermented from starch material, finishes through starch material pre-treatment, zymamsis, three steps of distillation.Fermenting process is selected the production bacterial strain for use, and producing bacterial strain is Saccharomyces cerevisiae 1912, preserving number: CGMCCNo.0806.This invention is by existing double-enzyme method hydrolyzed starch, after the starch hydrolysis, utilize the yeast of the anti-hypertonic solution generation alcohol that ferments again, do not add sulfuric acid at fermenting process, thereby under equating material condition, improve ethanol content in the fermented liquid, reduce fermented waste fluid toxicity and quantity discharged.
Summary of the invention
The present invention is directed to present starchy material and produce the deficiency of alcohol technology, provide a kind of big jar, carrier-free immobilization yeast to continuously ferment and produce the method for alcohol, this method can improve alcohol output, reduce production costs, environmental protection and energy saving.
Of the present invention continuously fermenting produces the method for alcohol, comprises that starchy material pre-treatment, carrier-free immobilization yeast continuously ferment, distill, and it is characterized in that described carrier-free immobilization yeast continuously ferments specific as follows:
1 of pre-fermentor tank, 6～8 of fermentor tanks connect successively; Fermentor tank list tank volume 550～600m
3, be wedged bottom at the bottom of the fermentor tank jar, preceding 2 or preceding 3 in the fermentor tank is seeding tank; When inspiring first seeding tank, use the Angel dry yeast, carry out the inspiration of seeding tank; Adopt multiple tank stream addition that liquid glucose stream is added in pre-fermentor tank and the ferment-seeded jar, per hour fed sterile air 5～10 minutes in pre-fermentor tank and each seeding tank, oxygen is provided, activate yeast, make yeast count be controlled at 0.9～2.0 hundred million/more than the ml; The pH value of controlling fermentation liquid in each seeding tank is not less than 3.7; Improve the addition of the nutritive salt in the first seeding tank, interpolation nutritive salt is: monoammonium phosphate 0.25～3.0g/kg raw material; Ammonium sulfate 0.70～0.75g/kg raw material; Sal epsom 0.2～0.3g/kg raw material; Zinc sulfate 0.12～0.15g/kg raw material; Adopt thick mash fermentation, make the pond wine degree that ferments reach 10～13%.
The amount that preferred first seeding tank adds nutritive salt is: monoammonium phosphate 0.25g/kg raw material; Ammonium sulfate 0.71g/kg raw material; Sal epsom 0.2g/kg raw material; Zinc sulfate 0.13g/kg raw material.
Above-mentioned carrier-free immobilization yeast continuously ferments, and adopts the outer cooling technology of seed tank culture jar jar, and strict control ferment-seeded jar culture temperature is at 30～31 ℃.
The pH value of fermentation liquid is preferably more than 3.9 in above-mentioned each seeding tank.
The charging of above-mentioned each seeding tank adopts a jar middle and upper part tangent line to enter in the jar, makes feed liquid become the power of stirring simultaneously, has reduced the formation of jar interior buildup.
Also be added with penicillin or sanitas in above-mentioned each seeding tank, to suppress growing of assorted bacterium.
Do not do special qualification in the above method, all get final product by state of the art.
Starchy material pre-treatment in the method for the present invention can adopt double-enzyme method to the starch pre-treatment that is hydrolyzed by prior art.The preferred starchy material pre-treatment step of the present invention is as follows:
1. starchy material adopts one-level to pulverize, granularity is controlled at 1.5～1.8mm, then by starchy material: water=1: 3～3.5 mass ratioes add water and mix slurry, in deployed powder slurry, add high temperature resistant α-Dian Fenmei, amount by 2～5 μ/g raw material, stirring airtightly in powder slurry jar is heated to 67～89 ℃, keeps 30～60 minutes, must the powder slurries.
Its reaction mechanism is:
2. warm boiling in then above-mentioned powder slurries being carried out, boiling temperature is controlled at 100～110 ℃, boiling gelatinization 1.5～2 hours, control gelatinization rate 85～95%, to stick with paste liquid carry out vacuum cooling to 60～and 62 ℃, add saccharifying enzyme, mix and carry out saccharification, the usage quantity of saccharifying enzyme is controlled at 150～170 μ/g raw material.Conversion coefficient 40～60%.
Preferably, add water in the starchy material described in the above-mentioned steps 1 and mix slurry, 55～65 ℃ of the temperature of institute's water.
Preferably, add water in the starchy material described in the above-mentioned steps 1 and mix slurry, in order to save fresh water, the 50～60%wt that adds in the entry that mixes slurry usefulness can be with the waste water of alcohol distillation tower.
The preferred starchy material pretreatment process of the present invention adds suitable quantity of water and transfers the powder slurry by strict control starchy material granularity, and measures such as warm boiling in adopting, the best gelatinization rate of control, has greatly improved starch utilization ratio.
Distillation is carried out according to conventional Alcohol Production distillatory method in the method for the present invention.
Technical characterstic of the present invention mainly is big jar, carrier-free immobilization yeast, production alcohol continuously ferments.Be embodied in following several respects:
1. increase fermentor tank list tank volume, reduce the number of fermentor tank, shorten the connection length of fermentation, adopt wedged bottom simultaneously, reduced the formation of being detained material, improved the environment of yeast growth, alleviated the degree that assorted bacterium grows, advantageous conditions is provided for continuously fermenting.
2 increase the pre-fermentor cultivation yeast of seed, accelerate the speed that seeding tank inspires in earlier stage, can also improve the saccharomycetic quantity of seeding tank simultaneously, and the interior yeast of seeding tank is bred fast.
3. adopt multiple tank stream addition, guarantee the saccharomycetic thinning ratio of seeding tank fully, cooperate the use of pre-fermentor tank, fermentor tank zymic steady state is effectively controlled.
4. in pre-fermentor tank and each seeding tank, per hour feeding sterile air 5～10 minutes, in time increasing the necessary oxygen of yeast breeding, activating yeast, making yeast growth vigorous, make yeast count be controlled at 0.9～2.0 hundred million/more than the ml.Simultaneously also by having controlled effectively of configuration fermentor tank air-distributor the deposition of jar bed material.
5. the control of fermentation pH value, the pollution that a large amount of breedings of various assorted bacterium cause in fermentation is to hinder a major cause of continuously fermenting, by facts have proved, the suitable pH value of control can prevent living contaminants in the ferment-seeded jar, it is one of the capable measure that can turn round for a long time of seeding tank, for this reason, change the way of in the past transferring liquid glucose pH value in saccharification, the pH value of strict control fermentation liquid is more than 3.7, preferably more than the pH3.9, suppress growing of assorted bacterium in conjunction with adding penicillin and some sanitass simultaneously.
6. improved the addition of the nutritive salt in the first seeding tank, the nutritive salt of ample supply yeast growth and breeding.
7. utilization carrier free yeast technology uses Angel dry yeast slack tank to inspire and stream adds the cooperation of pre-fermentor tank seed and above-mentioned each measure of control, can make seeding tank for continuous a couple of days not change kind, and continuous three wheat harvesting periods of fermentation system are tank switching and exchange system not.
8. adopt the outer cooling technology of seed tank culture jar jar, strict control ferment-seeded jar culture temperature is at 30～31 ℃, but also make feed liquid become the power of stirring simultaneously by unique feeding manner (a jar middle and upper part tangent line enters in the jar), reduced the formation of jar interior buildup, make no dead angle in the fermentor tank, make automatic cleaning of machinery and sterilization become possibility, effectively suppressed growing of assorted bacterium.
9. employing thick mash fermentation, its pond wine degree that ferments can reach 10～13%.
Excellent results of the present invention also is:
(1) the invention solves the problem that the seeding tank tank switching cycle is short, microbiological contamination is serious of continuously fermenting in the prior art.
(2) make full use of equipment, improved plant factor.
(3) severe contamination that causes for traditional zymotic production technology route finds a practicable terms of settlement.
(4) improved and fermented pond wine part and starch utilization ratio.
(5) provide a kind of technology of continuously fermenting.
(6) reuse distillation tower waste water reduces quantity of wastewater effluent.
Description of drawings
Fig. 1 is the fermentation process equipment schema of embodiment, 1. pre-fermentor tanks wherein, and 2-4 is a seeding tank, 5-8 is a fermentor tank.
Embodiment
The present invention will be further described below by embodiment and Fig. 1, but be not limited thereto.
Embodiment: big jar, carrier-free immobilization yeast continuously ferment and produce the method for alcohol
1. starchy material pre-treatment
Starchy material adopts one-level to pulverize, granularity is controlled at 1.5～1.8mm, stir with 55～65 ℃ of water then, adopt smart tower waste water of distillation and fresh water (weight ratio 60: 40) that the raw material of pulverizing is mixed slurry, get the powder slurry, in deployed powder slurry, add high temperature resistant α-Dian Fenmei, by the amount of 2～5 μ/g raw material, drip continuously evenly through stirring and airtightly in powder slurry jar be heated to 67～89 ℃, kept 30～60 minutes.
Warm boiling in then these powder slurries being carried out, boiling temperature is controlled at 100～110 ℃, boiling gelatinization 2 hours, control gelatinization rate 85～95% will be stuck with paste liquid and carry out vacuum cooling to 60～62 ℃, the adding saccharifying enzyme, mix and carry out saccharification, the usage quantity of saccharifying enzyme is controlled at 150～170 μ/g raw material, through the saccharification liquid of boiling saccharification gained, uses liquid glucose as continuously fermenting of next step.
2. the carrier-free immobilization yeast continuously ferments
1 of pre-fermentor tank, fermentor tank totally 7 (preceding 3 is seeding tank) connects successively; Fermentor tank list tank volume 550m
3Adopt wedged bottom at the bottom of the fermentor tank jar, in first seeding tank, use the Angel dry yeast to inspire seeding tank, adopt multiple tank stream addition that liquid glucose stream is added in pre-fermentor tank and the ferment-seeded jar, per hour fed sterile air 5-10 minute in pre-fermentor tank and each ferment-seeded jar, oxygen is provided, activates yeast, make yeast count be controlled at 0.9～2.0 hundred million/more than the ml; The pH value of controlling fermentation liquid in each ferment-seeded jar is not less than 3.9, also is added with penicillin (1 units per ml) simultaneously, to suppress growing of assorted bacterium.Treat to add fresh liquid glucose gradually up to canful after yeast reaches requirement in first seeding tank, then to thereafter fermentor tank punishment in advance and according to two seeding tanks fermentations of the control condition control back of first seeding tank.Improve the addition of the nutritive salt in the first seeding tank, make interpolation nutritive salt be: monoammonium phosphate 0.25g/kg raw material; Ammonium sulfate 0.71g/kg raw material; Sal epsom 0.2g/kg raw material; Zinc sulfate 0.13g/kg raw material.Also add necessary nutritive salt on a small quantity in all the other seeding tanks by prior art.Adopt thick mash fermentation, make the pond wine degree that ferments reach 10-13%.Adopt the outer cooling technology of seed tank culture jar jar, strict control ferment-seeded jar culture temperature is at 30-31 ℃.The charging of each seeding tank adopts a jar middle and upper part tangent line to enter in the jar, makes feed liquid become the power of stirring simultaneously, has reduced the formation of jar interior buildup.
3. distillation is carried out according to conventional Alcohol Production distillatory method.
Claims (3)
1. continuously ferment and produce the method for alcohol, comprise that starchy material pre-treatment, carrier-free immobilization yeast continuously ferment, distill, wherein, described carrier-free immobilization yeast continuously ferments as follows:
1 of pre-fermentor tank, 6～8 of fermentor tanks connect successively; Fermentor tank list tank volume 550～600m
3, be wedged bottom at the bottom of the fermentor tank jar, preceding 2 or preceding 3 in the fermentor tank is seeding tank; When inspiring first seeding tank, use the Angel dry yeast to carry out the inspiration of seeding tank; Adopt multiple tank stream addition that liquid glucose stream is added in pre-fermentor tank and the ferment-seeded jar, per hour fed sterile air 5～10 minutes in pre-fermentor tank and each seeding tank, oxygen is provided, activate yeast, make yeast count be controlled at 0.9～2.0 hundred million/ml; The pH value of controlling fermentation liquid in each seeding tank is not less than 3.9; Improve the addition of the nutritive salt in the first seeding tank, interpolation nutritive salt is: monoammonium phosphate 0.25～3.0g/kg raw material; Ammonium sulfate 0.70～0.75g/kg raw material; Sal epsom 0.2～0.3g/kg raw material; Zinc sulfate 0.12～0.15g/kg raw material; Adopt thick mash fermentation, make the pond wine degree that ferments reach 10～13%;
Described carrier-free immobilization yeast continuously ferments, and adopts the outer cooling technology of seed tank culture jar jar, and control ferment-seeded jar culture temperature is at 30～31 ℃;
The charging of described each seeding tank adopts a jar middle and upper part tangent line to enter in the jar, makes feed liquid become the power of stirring simultaneously, has reduced the formation of jar interior buildup.
2. as claimed in claim 1 continuously fermenting produces the method for alcohol, it is characterized in that, the amount that described first seeding tank adds nutritive salt is: monoammonium phosphate 0.25g/kg raw material; Ammonium sulfate 0.71g/kg raw material; Sal epsom 0.2g/kg raw material; Zinc sulfate 0.13g/kg raw material.
3. as claimed in claim 1 continuously fermenting produces the method for alcohol, it is characterized in that described starchy material pre-treatment step is as follows:
(1) the starchy material one-level is pulverized, granularity is controlled at 1.5～1.8mm, press starchy material then: water=1: 3～3.5 mass ratioes, add water and mix slurry, add high temperature resistant α-Dian Fenmei in deployed powder slurry, by the amount of 2～5u/g raw material, stirring airtightly in powder slurry jar is heated to 67～89 ℃, kept 30～60 minutes, and got the powder slurries;
The described slurry of mixing is with 55～65 ℃ of water temps, mixes that 50～60%wt is the waste water of alcohol distillation tower in the slurry water;
(2) above-mentioned powder slurries are carried out in warm boiling, boiling temperature is controlled at 100～110 ℃, boiling gelatinization 1.5～2 hours, control gelatinization rate 85～95%, to stick with paste liquid carry out vacuum cooling to 60～and 62 ℃, add saccharifying enzyme, mix and carry out saccharification, the usage quantity of saccharifying enzyme is controlled at 150～170u/g raw material; Conversion coefficient 40～60%;
(3) in above-mentioned steps (2) gained saccharification liquid, add entry and mix slurry, get converted mash.
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| CN107988038A (en) * | 2017-12-07 | 2018-05-04 | 山西老陈壹号生物科技有限公司 | A kind of ethanol fermentation tank and alcohol fermentation system and technology of alcohol |
| CN110408532A (en) * | 2019-08-29 | 2019-11-05 | 成都鸿展慧智科技有限公司 | A kind of gradient temperature control fermentation system |
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| CN1814763A (en) * | 2005-12-20 | 2006-08-09 | 云南大学 | Method for improving alcohol yield fermented from starch material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1814763A (en) * | 2005-12-20 | 2006-08-09 | 云南大学 | Method for improving alcohol yield fermented from starch material |
Non-Patent Citations (3)
| Title |
|---|
| 李盛贤等.新型大容积酒精发酵罐的设计.《酿酒》.2001,第28卷(第2期), * |
| 莫亦培.木薯淀粉酒精生产工艺的一些问题探讨.《广西轻工业》.1995,(第4期), * |
| 谢林.酒精大罐发酵技术的应用与研究.《酿酒科技》.1995,(第72期), * |
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