CN103540618B - A kind of thin stillage recycling produces the method for alcohol - Google Patents
A kind of thin stillage recycling produces the method for alcohol Download PDFInfo
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Abstract
The invention discloses a kind of thin stillage recycling and produce alcohol method, alcohol tank liquid water, vinasse water, equipment for washing water and the full reuse of anaeration in normal temperature water outlet is adopted to carry out Alcohol Production, the pH value of preparing burden is controlled by the ratio of the anaeration in normal temperature water outlet produced in adjustment alcohol tank liquid water, vinasse water, equipment for washing water and follow-up biogas fermentation, without the need to increasing other allogenic water during batching, effectively save water resources utilization, the present situation in short supply of Freshwater resources has been significant; And effectively reduce the processing cost of waste liquid in Alcohol Production, saved cost, added the output value; Avoid equipment for washing water pollution on the environment, realize hoop structure truly in Alcohol Production.
Description
Technical field
The invention belongs to Alcohol Production technical field, particularly relate to the full reuse technology of alcohol tank liquid water, vinasse water and anaeration in normal temperature water outlet, without sewage discharge in whole production process.
Background technology
As a kind of reproducible strategic resources, oneself enters in the Industrial products of state key development alcohol, but zymamsis industry is industry environment being had to larger pollution at present.The waste water that traditional fermentation process produces enters in natural water mostly after treatment, although all oneself is up to standard for the many indexs such as COD after treatment in discharge water, still has larger gap compared with Natural Water.Zymamsis industry is a kind of bulk product production industry, and discharge water metering unit is generally ton, still there is larger pollution to Natural Water.
Alcohol tank liquid water in Alcohol Production, vinasse water and equipment for washing water, and the anaeration in normal temperature water outlet produced when subsequent wastewater treatment produces biogas, be the organic waste water of high density, high suspended matter, average suspension content is up to 38000mg/L; COD is up to 2-3 ten thousand, and organic components content is up to 93%-94%, and main component is carbohydrate.Conventional process, cost is high, and water resource waste is serious, and environmental pollution is serious.
Application number disclosed in 31 days Augusts in 2005 of Chinese patent be 200410066017.3 patent of invention disclose a kind of close circulation technology of producing alcohol in high concentration through fermentation of clear solution, its weak point is: this technology exists larger defect, alcohol grain direct reuse causes slip pH value on the low side, need to add ammoniacal liquor to regulate, substantially increase production cost.
Application number disclosed in 13 days July in 2011 of Chinese patent be 201010576401.3 application for a patent for invention disclose a kind of method that anaeration in normal temperature water outlet recycling of water resource produces alcohol, the weak point of this technology is: need the oxygenants such as a large amount of oxygen or air to carry out oxide treatment, time-consuming cost of taking a lot of work is high, simultaneously by this technical finesse, a large amount of CO will be produced
2, be discharged in air, increase the weight of Greenhouse effect, extreme influence is caused to amblent air temperature.
The alcohol producing process that disclosed in the patent of invention patent that disclosed in 6 days July in 2011 of Chinese patent, application number is 201010576411.7, a kind of raising is ingredient water with anaeration in normal temperature water outlet, main manifestations is before slops carries out anaerobic treatment, need the precipitation of carrying out sulfate radical, and after anaerobic treatment, anaeration in normal temperature water outlet pH value is about 8.0, when being used as spice water, need to add sulfuric acid and reduce pH value, the process of sulfate radical substantially increases production cost on the one hand, the existence of sulfate radical can cause corrosion to equipment on the other hand, have a strong impact on service life of equipment, even cause the damage of equipment.
Summary of the invention
The object of the invention is to overcome the deficiency having now and exist in technology, a kind of thin stillage recycling is provided to produce the method for alcohol, alcohol tank liquid water, vinasse water, equipment for washing water and anaeration in normal temperature water outlet are back to Alcohol Production entirely, the maximum advantage of this technique is: without the need to increasing other allogenic water during batching, significantly reduce the utilization of water resources; The processing cost of effective reduction alcohol tank liquid water and anaeration in normal temperature water outlet; Avoid equipment for washing water pollution on the environment; Realize the hoop structure in Alcohol Production.
The technical solution adopted in the present invention is: a kind of thin stillage recycling produces the method for alcohol, and its processing step comprises:
(1) get starchy material through pulverizing, add alcohol tank liquid water, vinasse water, equipment for washing water and anaeration in normal temperature water outlet and prepare burden, spice concentration is that 20 ~ 36%, pH controls 4.0 ~ 8.0;
(2) 15 ~ 25u/g is added
siccativealpha-amylase, and liquefaction processing 20-60min is carried out at 60 ~ 100 DEG C of temperature;
(3) raw material of post liquefaction is cooled to 25 ~ 40 DEG C and adds 170 ~ 280u/g
siccativesaccharifying enzyme, saccharification 5-15h;
(4) 6-8%v/v yeast is inoculated, enter zymamsis, leavening temperature controls at 25 ~ 40 DEG C, fermentation 40-80h, zymamsis end of a period mash carries out distillation and produces alcohol, the washing water direct reuse that the vinasse water produced after distillation and washing plant produce;
(5) the alcohol grain produced after preparing alcohol adopts filtration, press filtration, centrifugation to carry out solid-liquid separation, after solid-liquid separation, his use of solid substance, alcohol tank liquid water part direct reuse, another part carries out high temperature, middle temperature prepares biogas, the anaeration in normal temperature water outlet direct reuse of generation;
(6) repeating step (1)-(5).
As the further prioritization scheme of the present invention: in described step (1), spice concentration is that 28 ~ 32%, pH controls 6.8 ~ 7.2;
Described step adds 18 ~ 22u/g in (2)
siccativealpha-amylase, and liquefaction processing 40-60min is carried out at 85 ~ 95 DEG C of temperature;
The raw material of the middle post liquefaction of described step (3) is cooled to 32 ~ 34 DEG C and adds 220 ~ 240u/g
siccativesaccharifying enzyme, saccharification 10-12h;
Inoculation 7%v/v yeast in described step (4), enter zymamsis, leavening temperature controls at 37 ~ 39 DEG C, fermentation 60-80h;
Prioritization scheme as the present invention's step again: in described step (1), spice concentration is that 30%, pH controls 6.8;
Described step adds 20u/g in (2)
siccativealpha-amylase, and liquefaction processing 50min is carried out at 90 DEG C of temperature;
The raw material of the middle post liquefaction of described step (3) is cooled to 33 DEG C and adds 240u/g
siccativesaccharifying enzyme, saccharification 10h;
Inoculation 7%v/v yeast in described step (4), enter zymamsis, leavening temperature controls at 38 DEG C, fermentation 60h;
A step again: in described step (1), the blending ratio of alcohol tank liquid water, vinasse water and anaeration in normal temperature water outlet is anaeration in normal temperature water outlet accounts for 40 ~ 80% of three's mixing water quality.
After in the present invention, vinasse water refers to that zymamsis maturation wine with dregs distills in distillation tower, the liquid not containing or contain minute quantity alcohol residual in distillation tower reactor; Equipment for washing water refers in alcohol production process, the liquid produced when washing the equipment such as fermentor tank and distillation tower; Described starchy material adopt in cassava, potato, wheat, corn, jowar one or more.
Thin stillage recycling of the present invention produces the alcohol tank liquid water of alcohol method by producing in adjustment alcohol production process, vinasse water, the ratio of the anaeration in normal temperature water outlet produced in equipment for washing water and follow-up biogas fermentation controls the pH value after preparing burden, without the need to increasing other allogenic water during batching, considerably reduce the utilization of water resources, effectively save water resources, efficiently avoid in traditional technology and need centering temperature anaerobic effluent to carry out engaging sulphate, ammonia nitrogen removal and need outer acid adding or alkali adjust ph etc. not only loaded down with trivial details but also time-consuming and increase cost program, it also avoid sulfate radical in traditional technology production and corrosion is caused to equipment, have a strong impact on service life of equipment, even cause the damage of equipment, and sulfate radical enters methane fermentation system, produce sulfurous gas, the generation of the situations such as obnoxious flavour such as hydrogen sulfide, drastically increase production efficiency, reduce production cost, safe operation and the work-ing life of equipment are ensured, significantly reduce the probability of equipment stopping production maintenance, improve equipment yield, improve the quality of biogas, reduce the processing cost of biogas, avoid a large amount of CO2 in alcohol production process and be discharged in air the generation increasing the weight of Greenhouse effect situation, avoid equipment for washing water pollution on the environment, realize the hoop structure in Alcohol Production.By alcohol grain is carried out solid-liquid separation, solid substance is for the production of feed, due to the effect of microorganism, protein in vinasse, vitamin B group and aminoacids content are all higher than the direct feed nutritive value produced by food crop, gained alcohol tank liquid water part direct reuse is in the ingredient water of zymamsis, another part carries out high temperature, middle temperature two step biogas fermentation, the biogas produced is used for heating in Alcohol Production, or for generating and vehicle fuel, natural pond slag is used as fertilizer, turn waste into wealth, not only achieve the hoop structure in Alcohol Production, reduce production cost, the more important thing is the more addition product of output, bring very considerable market economy benefit.
Alcohol tank liquid water in Alcohol Production, vinasse water and equipment for washing water, and the anaeration in normal temperature water outlet produced when subsequent wastewater treatment produces biogas, be the organic waste water of high density, high suspended matter, average suspension content is up to 38000mg/L; COD is up to 30000 mg/L, and organic components content is up to 93% ~ 94%, and main component is carbohydrate, and calculate by consuming 300 tons of waste water every day, then receive every day COD total amount to be about 180000 kilograms, per kilogram COD produces 0.35 m
3biogas, then biogas has a daily output of 63000m
3, biogas thermal value is about 5500 kilocalories/m
3, be equivalent to the calorific value of 1kg fire coal, biogas is used for heating in Alcohol Production, save standard coal 30 tons every day, ton coal is by 600 yuan, and every day can income 18000 yuan, the whole year, by 300 days production Time Calculation, can save standard coal more than 9000 ton, annual saving coal money 5,400,000 yuan.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is process flow sheet of the present invention.
Embodiment
Thin stillage recycling of the present invention produces the method for alcohol, alcohol tank liquid water, vinasse water, equipment for washing water and the full reuse of anaeration in normal temperature water outlet is adopted to carry out Alcohol Production, the pH value of preparing burden is controlled by the ratio of the anaeration in normal temperature water outlet produced in adjustment alcohol tank liquid water, vinasse water, equipment for washing water and follow-up biogas fermentation, without the need to increasing other allogenic water during batching, effectively save water resources utilization, the present situation in short supply of Freshwater resources has been significant; And effectively reduce the processing cost of waste liquid in Alcohol Production, saved cost, added the output value; Avoid equipment for washing water pollution on the environment, realize hoop structure truly in Alcohol Production.Its processing step comprises:
(1) starchy material is got through pulverizing, add alcohol tank liquid water, vinasse water, equipment for washing water and anaeration in normal temperature water outlet to prepare burden, by control alcohol tank liquid water, vinasse water, equipment for washing water and anaeration in normal temperature water outlet add total amount and respective ratio, spice concentration is controlled 20 ~ 36%, pH controls 4.0 ~ 8.0, to complete batching; Described starchy material can adopt in cassava, potato, wheat, corn, jowar one or more;
Preferably, the blending ratio of alcohol tank liquid water, vinasse water and anaeration in normal temperature water outlet is that anaeration in normal temperature water outlet accounts for 40 ~ 80% of three's mixing water quality, the mixing water batching preferably of this ratio and subsequent production;
Through the test and study analysis that Applicant none is repeated for several times, be surprised to find that spice concentration is 28 ~ 32%, pH controls 6.8 ~ 7.2 time, when other conditions are constant, effectively can improve liquefaction and saccharification efficiency, be particularly that 30%, pH controls 6.8 time in spice concentration, liquefaction, saccharification and follow-up fermentation efficiency all significantly increase, and reach desirable optimum regime.
(2) 15 ~ 25u/g is added
siccativealpha-amylase, and liquefaction processing 20-60min is carried out at 60 ~ 100 DEG C of temperature; Preferably, 18 ~ 22u/g is added
siccativealpha-amylase, and liquefaction effect when carrying out liquefaction processing 40-60min at 85 ~ 95 DEG C of temperature is better, when adding 20u/g
siccativealpha-amylase, and liquefaction processing 50min is carried out at 90 DEG C of temperature, liquefaction effect is best, and drastically increases follow-up saccharification efficiency.
(3) raw material of post liquefaction is cooled to 25 ~ 40 DEG C and adds 170 ~ 280u/g
siccativesaccharifying enzyme, saccharification 5-15h; Preferably, raw material is cooled to 32 ~ 34 DEG C and adds 220 ~ 240u/g
siccativesaccharifying enzyme, saccharification 10-12h, saccharification result is better; Material is cooled to 33 DEG C and adds 240u/g
siccativesaccharifying enzyme, saccharification 10h, saccharification result is best, provides maximum facility to follow-up zymamsis, and fermenting speed is fast, and alcohol output is high.
(4) 6-8%v/v yeast is inoculated, enter zymamsis, leavening temperature controls at 25 ~ 40 DEG C, fermentation 40-80h, zymamsis end of a period mash carries out distillation and produces alcohol, the washing water direct reuse that the vinasse water produced after distillation and washing plant produce; Preferably, inoculation 7%v/v yeast, leavening temperature controls at 37 ~ 39 DEG C, and fermentation 60-80h, had both ensured that output turn improved efficiency; More excellent, inoculation 7%v/v yeast, leavening temperature controls at 38 DEG C, fermentation 60h; Reach optimum regime, alcohol output is obviously doubled.
(5) the alcohol grain produced after preparing alcohol adopts filtration, press filtration, centrifugation to carry out solid-liquid separation, after solid-liquid separation, solid substance is used for fodder production, alcohol tank liquid water part direct reuse, another part carries out high temperature, middle temperature prepares biogas, biogas is used for generating, vehicle fuel or Alcohol Production, the anaeration in normal temperature water outlet direct reuse of generation;
(6) repeating step (1)-(5).
Embodiment one
Thin stillage recycling produces a method for alcohol, and its processing step comprises:
(1) get 600kg Tapioca Starch, add 800kg alcohol tank liquid water, 300kg vinasse water, 100kg equipment for washing water and the water outlet of 1200kg anaeration in normal temperature and prepare burden, spice concentration is that 20%, pH controls 8.0;
(2) 15u/g is added
siccativealpha-amylase 120g, carries out liquefaction processing 20min after stirring at 60 DEG C of temperature;
(3) raw material of post liquefaction is cooled to 25 DEG C and adds 170u/g
siccativesaccharifying enzyme 800g, saccharification 5h;
(4) inoculate 6%v/v yeast 1.5kg, enter zymamsis, leavening temperature controls at 25 DEG C, fermentation 40h, and zymamsis end of a period mash carries out distillation and produces alcohol, the washing water direct reuse that the vinasse water produced after distillation and washing plant produce;
(5) the alcohol grain produced after preparing alcohol adopts filtration, press filtration, centrifugation to carry out solid-liquid separation, after solid-liquid separation, solid substance he use, alcohol tank liquid water part direct reuse, another part carries out high temperature, middle temperature prepares biogas, biogas is used for vehicle fuel, the anaeration in normal temperature water outlet direct reuse of generation;
(6) repeating step (1)-(5).
Embodiment two
Thin stillage recycling produces a method for alcohol, and its processing step comprises:
(1) get Tapioca Starch 500kg, Semen Maydis powder 100kg, add alcohol tank liquid water 600kg, vinasse water 300kg, equipment for washing water 150kg and anaeration in normal temperature water outlet 500kg and prepare burden, spice concentration is that 36%, pH controls 4.0;
(2) 25u/g is added
siccativealpha-amylase 100g, and liquefaction processing 60min is carried out at 100 DEG C of temperature;
(3) raw material of post liquefaction is cooled to 40 DEG C and adds 280u/g
siccativesaccharifying enzyme 700g, saccharification 15h;
(4) inoculate 8%v/v yeast, enter zymamsis, leavening temperature controls at 40 DEG C, fermentation 80h, and zymamsis end of a period mash carries out distillation and produces alcohol, the washing water direct reuse that the vinasse water produced after distillation and washing plant produce;
(5) the alcohol grain produced after preparing alcohol adopts filtration, press filtration, centrifugation to carry out solid-liquid separation, after solid-liquid separation, solid substance is used for fodder production, alcohol tank liquid water part direct reuse, another part carries out high temperature, middle temperature prepares biogas, biogas is used for generating and vehicle fuel, the anaeration in normal temperature water outlet direct reuse of generation;
(6) repeating step (1)-(5).
Embodiment three
The difference part of the present embodiment and embodiment one is:
(1) adopt 500kg sorghum flour and 100kg wheat-flour, add alcohol tank liquid water 400kg, vinasse water 200kg, equipment for washing water 100kg and anaeration in normal temperature water outlet 600kg and prepare burden, spice concentration is that 32%, pH controls 7.2;
(2) 22u/g is added
siccativealpha-amylase 90g, and liquefaction processing 60min is carried out at 95 DEG C of temperature;
(3) raw material of post liquefaction is cooled to 34 DEG C and adds 240u/g
siccativesaccharifying enzyme 650g, saccharification 12h;
(4) inoculate 7%v/v yeast, enter zymamsis, leavening temperature controls at 39 DEG C, fermentation 80h.
Embodiment four
The difference part of the present embodiment and embodiment one is:
(1) adopt 500kg sorghum flour and 200kg Semen Maydis powder, add alcohol tank liquid water 600kg, vinasse water 200kg, equipment for washing water 200kg and anaeration in normal temperature water outlet 500kg and prepare burden, spice concentration is that 28%, pH controls 6.8;
(2) 18u/g is added
siccativealpha-amylase 150g, and liquefaction processing 40min is carried out at 85 DEG C of temperature;
(3) raw material of post liquefaction is cooled to 32 DEG C and adds 220u/g
siccativesaccharifying enzyme 750g, saccharification 10h;
(4) inoculate 7%v/v yeast, enter zymamsis, leavening temperature controls at 37 DEG C, fermentation 60h.
Embodiment five
(1) get potato powder 400kg, Semen Maydis powder 300kg, add alcohol tank liquid water 600kg, vinasse water 200kg, equipment for washing water 200kg and anaeration in normal temperature water outlet 500kg and prepare burden, spice concentration is that 30%, pH controls 6.8;
(2) 20u/g is added
siccativealpha-amylase 150g, and liquefaction processing 50min is carried out at 90 DEG C of temperature;
(3) raw material of post liquefaction is cooled to 33 DEG C and adds 240u/g
siccativesaccharifying enzyme, saccharification 10h;
(4) inoculate 7%v/v yeast, enter zymamsis, leavening temperature controls at 38 DEG C, fermentation 60h, and zymamsis end of a period mash carries out distillation and produces alcohol, the washing water direct reuse that the vinasse water produced after distillation and washing plant produce;
(5) the alcohol grain produced after preparing alcohol adopts filtration, press filtration, centrifugation to carry out solid-liquid separation, after solid-liquid separation, his use of solid substance, alcohol tank liquid water part direct reuse, another part carries out high temperature, middle temperature prepares biogas, the anaeration in normal temperature water outlet direct reuse of generation;
(6) repeating step (1)-(5).
Claims (4)
1. thin stillage recycling produces a method for alcohol, and its processing step comprises:
(1) get starchy material through pulverizing, add alcohol tank liquid water, vinasse water, equipment for washing water and anaeration in normal temperature water outlet and prepare burden, spice concentration is that 20 ~ 36%, pH controls 4.0 ~ 8.0;
It is characterized in that: its processing step also comprises:
(2) add 15 ~ 25u/g siccative alpha-amylase, and carry out liquefaction processing 20-60min at 60 ~ 100 DEG C of temperature;
(3) raw material of post liquefaction is cooled to 25 ~ 40 DEG C and adds 170 ~ 280u/g siccative saccharifying enzyme, saccharification 5-15h;
(4) 6-8%v/v yeast is inoculated, enter zymamsis, leavening temperature controls at 25 ~ 40 DEG C, fermentation 40-80h, zymamsis end of a period mash carries out distillation and produces alcohol, the washing water direct reuse that the vinasse water produced after distillation and washing plant produce;
(5) the alcohol grain produced after preparing alcohol adopts filtration, press filtration, centrifugation to carry out solid-liquid separation, after solid-liquid separation, his use of solid substance, alcohol tank liquid water part direct reuse, another part carries out high temperature, middle temperature prepares biogas, the anaeration in normal temperature water outlet direct reuse of generation;
(6) repeating step (1)-(5).
2. thin stillage recycling as claimed in claim 1 produces the method for alcohol, it is characterized in that: in described step (1), spice concentration is that 28 ~ 32%, pH controls 6.8 ~ 7.2;
Described step adds 18 ~ 22u/g in (2)
siccativealpha-amylase, and liquefaction processing 40-60min is carried out at 85 ~ 95 DEG C of temperature;
The raw material of the middle post liquefaction of described step (3) is cooled to 32 ~ 34 DEG C and adds 220 ~ 240u/g
siccativesaccharifying enzyme, saccharification 10-12h;
Inoculation 7%v/v yeast in described step (4), enter zymamsis, leavening temperature controls at 37 ~ 39 DEG C, fermentation 60-80h.
3. thin stillage recycling as claimed in claim 1 produces the method for alcohol, it is characterized in that: in described step (1), spice concentration is 30%, pH is 6.8;
Described step adds 20u/g in (2)
siccativealpha-amylase, and liquefaction processing 50min is carried out at 90 DEG C of temperature;
The raw material of the middle post liquefaction of described step (3) is cooled to 33 DEG C and adds 240u/g
siccativesaccharifying enzyme, saccharification 10h;
Inoculation 7%v/v yeast in described step (4), enter zymamsis, leavening temperature is 38 DEG C, fermentation 60h.
4. the thin stillage recycling as described in claim 1 or 2 or 3 produces the method for alcohol, it is characterized in that: in described step (1), the blending ratio of alcohol tank liquid water, vinasse water and anaeration in normal temperature water outlet is that anaeration in normal temperature water outlet accounts for 40 ~ 80% of three's mixing water quality.
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| CN105755057A (en) * | 2014-12-17 | 2016-07-13 | 中粮生化能源（肇东）有限公司 | Method for fermentative production of alcohol |
| CN106755128A (en) * | 2016-12-02 | 2017-05-31 | 江南大学 | A kind of reuse of anaerobic digestion solution part as Alcohol Production spice water method |
| CN115583724A (en) * | 2022-10-31 | 2023-01-10 | 清华苏州环境创新研究院 | Denitrification composite carbon source and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102121034A (en) * | 2010-12-07 | 2011-07-13 | 江南大学 | Method for producing alcohol by using anaerobic effluent in water recycling way |
| CN102250964A (en) * | 2011-05-30 | 2011-11-23 | 河南天冠企业集团有限公司 | Production technology of starchiness raw material alcohol |
| CN102796767A (en) * | 2012-08-28 | 2012-11-28 | 河南天冠企业集团有限公司 | Method for producing alcohols through resourceful treatment of anaerobic effluents |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102121034A (en) * | 2010-12-07 | 2011-07-13 | 江南大学 | Method for producing alcohol by using anaerobic effluent in water recycling way |
| CN102250964A (en) * | 2011-05-30 | 2011-11-23 | 河南天冠企业集团有限公司 | Production technology of starchiness raw material alcohol |
| CN102796767A (en) * | 2012-08-28 | 2012-11-28 | 河南天冠企业集团有限公司 | Method for producing alcohols through resourceful treatment of anaerobic effluents |
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