CN101748167A - Method for improving fermentation efficiency by using fermentation tail gas - Google Patents

Method for improving fermentation efficiency by using fermentation tail gas Download PDF

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Publication number
CN101748167A
CN101748167A CN 200810229323 CN200810229323A CN101748167A CN 101748167 A CN101748167 A CN 101748167A CN 200810229323 CN200810229323 CN 200810229323 CN 200810229323 A CN200810229323 A CN 200810229323A CN 101748167 A CN101748167 A CN 101748167A
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China
Prior art keywords
fermentation
tail gas
gas
tank
fermentor tank
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CN 200810229323
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CN101748167B (en
Inventor
汲涌
谢占武
陈宏权
刘瑶
张海宏
安海英
荆士华
姜铭妍
谌明
杨伟超
徐慧
张忠泽
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NORTHEAST PHARMACEUTICAL GROUP CO Ltd
Institute of Applied Ecology of CAS
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NORTHEAST PHARMACEUTICAL GROUP CO Ltd
Institute of Applied Ecology of CAS
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/14—Pressurized fluid

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Zoology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Genetics & Genomics (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Sustainable Development (AREA)
  • Biomedical Technology (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to a method for improving fermentation efficiency by using fermentation tail gas, belonging to the field of fermentation tail gas recovery. By adopting the method, the fermentation tail gas can be recycled, the energy is saved, the emission is reduced and the fermentation efficiency is improved. The method comprises the following steps that: tail gas produced in the process of aerobic fermentation is collected in a buffer tank and is guided into a special auxiliary compression pipeline communicated with a fermentation tank after the tail gas is pressurized by an air blower. When the fermentation is active and the oxygen demand is increased, the valve of the fermentation tank is opened and the tail gas is filled in the fermentation tank through a gas distributor arranged at the middle part of the fermentation tank, so oxygen is supplemented to the upper part of the fermentation tank, the overturning effect of fermentation liquid in the fermentation tank is enhanced, and the high-efficiency rapid fermentation is realized. The invention effectively utilizes the waste fermentation tail gas and opens a new road for enterprises to make technical progress and to step into a circular economy development mode.

Description

A kind of application of fermentation tail gas improves the method for fermentation efficiency
Technical field
The invention belongs to fermentation tail gas and recycle the field, be specially the method that a kind of application of fermentation tail gas improves fermentation efficiency.
Background technology
Fermentations such as amino acid, microbiotic, VITAMIN are strong aerobic fermentation, and the fermentation oxygen partial pressure needs more than 20～30%, and under strong mixing, the fermentation ventilation needs 1: 0.6～0.8 (per minute feeds the ratio of volume and fermentating liquid volume).300 tons of jar fermentations, all fermentation period is 60 hours, consume 3.0kg/cm 2High pressure sterile gas 500,000 M 3, power 2.6 ten thousand W, the maximum power consumption source that ventilates and become the fermentation plant.
Though the gas that strong aerobic fermentation feeds in the fermentor tank is big, only in jar, be detained in a flash of short duration, with the tail gas emptying.Waste resource, influenced environment again.Through to the systematic study of fermentation process for vitamin production tail gas, find that the compressed gas of leading indicator such as its oxygen, partial pressure of carbon dioxide and injection is of slight difference.The lab scale fermentation also shows the growth of its favourable thalline, again because of it is pure aseptic gas (filtering through fermentation media), so need not needing for fermentation in jar can be directly injected in the micro-filtration degerming again.
Summary of the invention
The object of the present invention is to provide a kind of application of fermentation tail gas to improve the method for fermentation efficiency, adopt this method can the recycle fermentation tail gas, energy-conservation, reduce discharging, improve fermentation efficiency.
For achieving the above object, the technical solution used in the present invention is:
A kind of application of fermentation tail gas improves the method for fermentation efficiency: the tail gas that produces in the collection fermenting process after the gas blower supercharging, imports the auxiliary right compression conduit of the special use of leading to fermentor tank in a surge tank.When the vigorous oxygen requirement of waiting to ferment strengthens, open the fermentation pot valve, in the gas distributor at tail gas nearly middle part in placing jar injects jar, supply fermentor tank top oxygen supply deficiency, the reinforcement fermented liquid seethe effect, realize efficient quick fermentation.
Among the present invention, it is 0.1～0.3kg/cm that the fermentation tail gas lotus is pressed 2
Among the present invention, collect tail gas, be provided with moisture trap, air pressure safety valve (0.2～0.5kg/cm in the surge tank in surge tank 2) and lead to the pipeline of gas blower suction opening.
Among the present invention, tail gas needs to be pressurized to 0.2～0.5kg/cm with gas blower 2
Among the present invention, the gas blower boosting capability is 0.2～0.5kg/cm 2
Among the present invention, adorn a ring-type gas distributor consistent with being positioned at the moulding of former fermentor tank tank base at liquid level 1/3～1/2 place of fermentor tank, tail gas through auxiliary right compression conduit import the fermentor tank tank body nearly middle part, with the consistent air-distributor of former fermentor tank tank base moulding, its air-flow rises and helps mutually with the air-flow effect of increasing that the master compresses.
Among the present invention, the fermentation test of mending tail gas is that oxygen-consumption is big, the fermentation process for vitamin production that fermentation period is short.
Among the present invention, the fermentation animated period is mended tail gas, and its amount is about 30～70% of main air demand.
Among the present invention, the yeast phase when tail gas is added is 2～16 hours, and tail gas additional amount (per minute ventilation volume/fermentating liquid volume) is 1: (0.3～0.8).
The present invention has following advantage:
1, the present invention efficiently utilizes fermented abandoned tail gas, for enterprise deeply develops, steps into the pattern of developing a circular economy, and opens up a new road.
2, the present invention uses the gas blower supercharging with fermentation tail gas, directly injects fermentor tank, can partly substitute the high pressure sterile gas of main compressor output, and save energy reaches 25～30%.
3, the present invention imports tail gas, increases the fermentation oxygen-supplying amount, has accelerated the speed of growth of thalline, and the shortening cycle reaches 10～15%.
4, import tail gas in the middle part of the fermentor tank of the present invention, improved the effect of seething of fermented liquid, strengthened the bacterial metabolism vigor, improve fermentation and transform 3～4%.
5, fermentation tail gas of the present invention is utilized, and has reduced the influence that exhaust emissions causes environment.
Embodiment
The present invention collects tail gas in surge tank, is provided with moisture trap, pressurize safety valve in the surge tank and leads to the pipeline of gas blower suction opening, and tail gas needs be pressurized to 0.2～0.5kg/cm with gas blower 2Adorn at liquid level 1/3～1/2 place of fermentor tank one be positioned at the consistent gas distributor of former fermentor tank tank base moulding, tail gas imports through auxiliary right compression conduit and is positioned at the nearly middle part of fermentor tank tank body, the ring-type gas distributor consistent with the moulding of former fermentor tank tank base, and the rising substreams of its importing is helped mutually with the main air stream effect of the interior former rising of jar.
Embodiment 1
Draw fermentation process for vitamin production tail gas (Vc) in a surge tank, be pressurized to 0.5kg/cm through micropump 2, import in the 2000ml fermentor tank (simulation fermentor tank) interior dress fermented liquid 1000ml.Gas inlet is located at pipe high 1/4 place (being 1/2 high place of fermented liquid).The fermentation beginning, ventilation feeds normal compressed gas by 1: 0.8 (gas volume that per minute feeds and the ratio of fermentating liquid volume).After 4 hours, open tail gas sampling valve (fermentation pot valve), inject tail gas by 1: 0.4 (gas volume that per minute feeds and the ratio of fermentating liquid volume) air flow, 16 hours, measure ferment effect, yield improves 40%.
Embodiment 2～6
Difference from Example 1 is that processing parameter and result be difference (seeing Table 1) to some extent.
Table 1 different technical parameters and corresponding ferment effect
Numbering The best yeast phase that tail gas is added (hour) Tail gas additional amount (per minute ventilation volume/fermentating liquid volume) Tail gas injection phase (the fermentation liquid level is 1) Cycle shortens (%) Yield improves (%)
??2 ??8 ??1∶0.4 ??1/2 ??10％ ??24％
??3 ??8 ??1∶0.4 ??1/3 ??12％ ??29％
??4 ??6 ??1∶0.3 ??1/2 ??9％ ??25％
??5 ??4 ??1∶0.6 ??1/2 ??15％ ??40％
??6 ??2 ??1∶0.4 ??1/2 ??9％ ??23％
Embodiment result shows that the present invention promptly collects the fermentation discharge tail gas, through supercharging, improves the ventilation layout, during controlling flow and flow, realizes the cycling and reutilization of fermentation tail gas.
The present invention is applicable to large scale fermentation processes such as the big amino acid of oxygen requirement, microbiotic, VITAMIN, organic acid.

Claims (6)

1. an application of fermentation tail gas improves the method for fermentation efficiency, it is characterized in that: collect the tail gas that produces in the aerobic fermentation process in a surge tank, after the gas blower supercharging, import the right compression conduit of leading to fermentor tank; When the vigorous oxygen requirement of waiting to ferment strengthens, open the fermentation pot valve, the gas distributor of tail gas through placing the nearly middle part of fermentor tank injects in the fermentor tank, supplies fermentor tank top oxygen supply deficiency, strengthens the effect of seething of fermented liquid, realizes efficient quick fermentation.
2. improve the method for fermentation efficiency according to the described application of fermentation tail gas of claim 1, it is characterized in that: it is 0.1～0.3kg/cm that the tail gas lotus is pressed 2
3. improve the method for fermentation efficiency according to the described application of fermentation tail gas of claim 1, it is characterized in that: exhaust collection is gone in the surge tank, built-in moisture trap and air pressure safety valve.
4. improve the method for fermentation efficiency according to the described application of fermentation tail gas of claim 1, it is characterized in that: tail gas is pressurized to 0.2～0.5kg/cm with gas blower 2
5. improve the method for fermentation efficiency according to the described application of fermentation tail gas of claim 1, it is characterized in that: adorn at fermentor tank liquid level 1/3～1/2 place one be positioned at the consistent ring-type gas distributor of former jar end moulding, the rising substreams of importing is helped mutually with the main air stream effect of the interior former rising of fermentor tank.
6. improve the method for fermentation efficiency according to the described application of fermentation tail gas of claim 1, it is characterized in that: the fermentation animated period, mend tail gas, its amount is 30～70% of a main air feed.
CN 200810229323 2008-12-05 2008-12-05 Method for improving fermentation efficiency by using fermentation tail gas Active CN101748167B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102266720A (en) * 2011-08-12 2011-12-07 菏泽睿智科技开发有限公司 Equipment and method for comprehensively utilizing fermented exhaust gas
CN102373243A (en) * 2011-11-08 2012-03-14 中粮生物化学（安徽）股份有限公司 Method for preparing citric acid through fermentation
CN108467289A (en) * 2018-05-22 2018-08-31 吉林省畜牧兽医科学研究院 Biodegradable purification system and animals died of illness corpse produce organic fertilizer method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5227136A (en) * 1986-02-07 1993-07-13 Envirotech Corporation Bioslurry reactor for treatment of slurries containing minerals, soils and sludges

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102266720A (en) * 2011-08-12 2011-12-07 菏泽睿智科技开发有限公司 Equipment and method for comprehensively utilizing fermented exhaust gas
CN102373243A (en) * 2011-11-08 2012-03-14 中粮生物化学（安徽）股份有限公司 Method for preparing citric acid through fermentation
CN102373243B (en) * 2011-11-08 2013-10-30 中粮生物化学（安徽）股份有限公司 Method for preparing citric acid through fermentation
CN108467289A (en) * 2018-05-22 2018-08-31 吉林省畜牧兽医科学研究院 Biodegradable purification system and animals died of illness corpse produce organic fertilizer method

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