CN203820791U - Integrated circulating-type microbial fermentation reaction and feed liquid separation device - Google Patents

Integrated circulating-type microbial fermentation reaction and feed liquid separation device Download PDF

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Publication number
CN203820791U
CN203820791U CN201420145661.9U CN201420145661U CN203820791U CN 203820791 U CN203820791 U CN 203820791U CN 201420145661 U CN201420145661 U CN 201420145661U CN 203820791 U CN203820791 U CN 203820791U
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fermentation
tank
membrane
fermentor tank
feed liquid
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Expired - Fee Related
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CN201420145661.9U
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Chinese (zh)
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王子豪
王秀菊
王立国
王仲鹏
何芳
田琳
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University of Jinan
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University of Jinan
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Abstract

The utility model discloses an integrated circulating-type microbial fermentation reaction and feed liquid separation device. The integrated circulating-type microbial fermentation reaction and feed liquid separation device is reconstructed from a continuous fermentation system of a standard stainless steel fermentation tank and comprises a fermentation tank, a feed supplementing tank, an air filtration system, a fermentation supernatant storage tank, a thallus concentration and amino acid on-line detection system, a device automatic control system, a membrane separation system (high-temperature-resistant and pollution-resistant membrane assembly), a cross-shaped air distributor, a pipeline system and the like. The dissolved oxygen required for fermentation is supplied by the cross-shaped air distributor and the membrane pollution is alleviated; by connecting the membrane separation system with the fermentation supernatant storage tank by virtue of a peristaltic pump or a suction pump, the clarification and separation of the fermentation broth is directly completed; the concentration of thallus and amino acid in the fermentation broth can be subjected to automatic online detection, and the fed-batch amount of the nutrient solution and fermentation reaction parameters are adjusted by the automatic control system. The integrated circulating-type microbial fermentation reaction and feed liquid separation device disclosed by the utility model is suitable for a continuous or semi-continuous fermentation process for production of amino acid.

Description

A kind of circulating microorganism fermentation reaction and feed liquid isolation integral equipment
Technical field
The utility model relates to a kind of microorganism fermentation reaction and separation of fermentative broth equipment, particularly relates to the integration apparatus that a kind of fermentation reaction separates with feed liquid.
Background technology
Amino acid is the elementary cell of constitutive protein matter, is the important component part of biological organism, has extremely important physiological function; Can be widely used in food, fodder additives, medicine and other fields, also can be used as the intermediate of synthetic special chemical material.At present, most amino acids productions adopt microbe fermentation method realize in batch reactor in batches, obtain the L-amino acid of single variety, are mingled with other kind of a small amount of amino acid.In traditional batch reactor in batches, enzyme or microorganism cells, in free or dissolved state, have following shortcoming: drive because existing (1), docking process, and plant factor is low; (2) throughput is low, and cost of equipment is high; (3) quality product of different batches has certain variation; (4) in the time that reaction finishes, enzyme or microorganism need be separated, or make its inactivation, thereby increase expense; (5) because the biocatalysis agent concentration adopting is lower, and sometimes exist product to suppress, therefore it is longer to complete the reaction times.Along with the raising day by day that amino acid quality product is required, in amino acids production, isolation and purification also occupies more and more consequence.Under normal circumstances, separation, purifying cost account for the more than 50% of amino acids production total cost.Therefore, in recent years, how to promote microorganism cells high-density culture, increase metabolism productive rate, realization to continuously ferment and how to solve amino acid also to cause that with selectivity and product yield that separation of fermentative broth, raising amino acid separate insider pays close attention to greatly.
In traditional amino acid production by ferment method process, first the complete feed liquid of fermentation in fermentation vat, need to pass through clarification, then carry out effective product separation.This technological process exists two difficult problems: the one, and separation liquid measure is large, waste liquid amount is large; This had both caused the energy consumption cost that separates link to remain high, and had brought again liquid waste disposal difficulty, easily caused the problem of environmental pollution.The 2nd, the clarifying process of fermented liquid exists contradiction with raising fermentation vat efficiency.In order to improve fermentation vat efficiency, just need to improve the concentration of the interior raw material of fermentation vat and microorganism, but in fermentation vat, concentration is higher as far as possible, fermented liquid clarification is just more difficult.Current fermentation and separating technology are difficult to solve this contradiction.
Amino acid whose main separation and purification method has: the precipitator method, ion exchange method, extraction process and membrane separation process etc. are several.Wherein, membrane separation process has caused the concern of the industry.Membrane filter method is realized microbial fermentation solution and is separated, and is mainly based on following mechanism: because the caused selectivity of the reasons such as wetting ability sees through; The sieve effect of molecular volume size; Donnan effect between charged molecule and charged separatory membrane.Battalion likes that the employing nanofiltration membrane separation glutami acid fermentation liquor results of study such as the tinkling of pieces of jade etc., Japanese plum be good show, the Nanofiltration Membrane Separation Technology with highly selective is close to isolated molecule amount, character is similar, electrically different amino acid has certain advantage, but due to hydrophobic interaction or the electrostatic adsorption of concentration polarization phenomenon, amino acid and film, usually there is the phenomenons such as resistance to mass transfer rising, membrane flux decline, rejection and working pressure rising in film over time in sepn process; These all will bring disadvantageous effect to industrial production, and seriously restrict Nanofiltration Membrane Separation Technology applying in related industries field.In addition, Timmer etc. have selected 4 kinds of separatory membranes, and to fermenting, amino acid whose membrane filtration situation is investigated; Result shows, uses electronegative ultra-filtration membrane, and Methionin more easily sees through, and separating effect is better than selected nanofiltration membrane; If amino acid molecular is positively charged, the concentration that changes salt (as NaCl etc.) also can change the rejection of ultra-filtration membrane to amino acid molecular; In the time that kilnitamin is carried out to membrane filtration, its rule is consistent with single amino acids is operated.Therefore adjust the pH value of amino acid mixing liquid, change its with electric charge, and can improve amino acid whose separation selectivity by the salt that adds suitable kind and concentration; Also proved, in the time that Donnan effect is occupied an leading position, the selectivity of separation is the highest simultaneously.Teiayadi etc. are studied the economy of reverse osmosis and fermenting process, membrane bioreactor operate continuously under the free bacteria concentration of 40g/L, and productivity can reach 22.5g/L, lactate concentration 89g/L, productive rate is 0.89.Xavier etc. have studied the operator scheme that affects lactic acid-producing in ceramic pipe type ultra-filtration membrane cell cycle bio-reactor, obtain good experiment effect, can obtain not celliferous clarified broth, there is higher lactic acid volume productivity 30g/Lh, higher product concentration 90g/L and longer 90h duration of service, selected ceramic membrane materials (zirconium white is applied on carbon) has good mechanical stability, and ability steam sterilizing.Kaimingye adopts external membrane separate fermentation and resin method coupled fermentation lactic acid cycle to utilize thalline, has obtained higher lactic acid production 7.75g/Lh simultaneously, but external membrane separation floor space is large, is not easy to online observation and controls, and running cost is high.Afterwards, also to embrane methods such as electrodialysis, the application in fermentation industry was studied for Coulman etc., Hongo etc., Nomura etc.
Visible, film device and technology have successfully been applied to the aspects such as the separating of tunning, classification, concentrated and purification, but are the form that adopts fermentor tank and separation membrane device to separate.The research of current embrane method fermentation reactor belongs to the combination of separation membrane device and fermentor tank substantially, although improve to a certain extent metabolism productive rate, realized and having continuously fermented, but still there is the reaction problem high with separating proceed step by step, energy consumption.As China Patent Publication No. CN1908176A " adopting mineral membrane to realize the method for it doesn't matter original position separate fermentation ", relate to fermentation and the coupling device separating and technique, that the fermented liquid containing biomass cells is separated by the film outside fermentor tank, but biomass cells can be affected in the process of this separation, and utility model is not yet mentioned and being continuously fermented.
Submerged membrane bio-reactor is a kind of more ripe, reactor of being specifically designed to sewage disposal, compared with traditional membrane reactor, membrane module can directly be put into bio-reactor, thereby the film on reactor can be held back all biomasss and can arbitrarily control sludge retention time.Due to it power consumption still less, stability is high, compact equipment, and less on the biological activity impact of biomass cells, especially in the taking-up process of fermented liquid, the required pressure of submerged membrane bio-reactor is starkly lower than other forms of membrane reactor, and therefore, submerged membrane bio-reactor can be realized the serialization of fermentation under most economical condition.In recent years, the applied research of membrane bioreactor in fermentation engineering also caused attention gradually, and film fermentation reactor has also obtained certain research.
Summary of the invention
Technical problem to be solved in the utility model is the defect existing for prior art, a kind of circulating microorganism fermentation reaction and feed liquid isolation integral equipment that collects fermentation reaction and reaction product and be located away from one is provided, realize the product solution that directly separates, extracts high density in amino acid fermentation tank, reduce fermentation liquor treatment amount, enhance productivity.
For solving this technical problem, the utility model provides a kind of circulating microorganism fermentation reaction and feed liquid isolation integral equipment, comprise fermentor tank, feed supplement tank, air filtering system, fermentation clear liquid hold-up vessel, cell concentration and amino acid on-line detecting system, equipment automatic control system, film separating system, cruciform air-distributor and pipeline, described cruciform air-distributor is positioned at the bottom of fermentor tank, is connected with air filtering system by pipeline; Described film separating system be placed in fermentor tank middle and lower part, be positioned at cruciform air-distributor directly over, be connected by pipeline and peristaltic pump or water suction pump, fermentation clear liquid hold-up vessel; The bottom of described fermentor tank is provided with waste material Pai Kou, its top is provided with opening for feed and air outlet, and described feed supplement tank is communicated with fermentor tank by opening for feed.
Described fermentor tank is air lift type aerobic fermentation tank, and required dissolved oxygen is supplied with by the cruciform air-distributor that is positioned at fermentor tank bottom.
Described film separating system is high temperature resistant, resistant to pollution membrane module.Compared with traditional membrane reactor, membrane module is directly put into fermentor tank, thereby the film in fermentor tank can be held back all biomasss and can arbitrarily control reactant residence time.
Shown in the membrane module of film separating system be dynamic ultrafiltration or micro-filtration membrane module, pattern is tubular fibre formula or hollow tubular type or flat, membrane module can tolerate 125 DEG C of high temperature, operating pressure 0.01-0.20MPa.
The molecular weight cut-off of described ultra-filtration membrane is 10000-100000MW, and the aperture of microfiltration membrane is 0.05-0.2 micron.
Beneficial effect: the utility model is suitable for the continuous or semicontinuous fermentation process of amino acids production, combine by fermentor tank and the submerged membrane bio-reactor being applied in middle water treatment, the fermentation clear liquid of producing no longer needs any processing, can directly enter into precipitation, purifying amino acid operation, realize fermentation reaction, separation and purification process integrated of amino acids production, reduce middle-chain, reduce the living contaminants of fermented liquid, shorten the production cycle, improved the quality of product.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1 fermentor tank, 2 feed supplement tanks, 3 air filtering systems, 4 fermentation clear liquid hold-up vessels, 5 cell concentrations and amino acid on-line detecting system, 6 peristaltic pumps or water suction pump, 7 film separating systems, 8 cruciform air-distributors.
Embodiment
Below in conjunction with drawings and Examples, the utility model is specifically described.
Figure 1 shows that structural representation of the present utility model.
The utility model adopts the fermentation system transformation of continuously fermenting of the stainless steel fermentor tank of standard to form, and mainly comprises: fermentor tank 1, feed supplement tank 2, air filtering system 3, fermentation clear liquid hold-up vessel 4, cell concentration and amino acid on-line detecting system 5, equipment automatic control system, film separating system 7, cruciform air-distributor 8 and pipeline.
The cell concentration on-line detecting system of fermentor tank and amino acid on-line detecting system 5 can be realized the concentration of somatic cells in automatic detection fermented liquid, and by adjusting the flow acceleration of nutritive medium and the discharge of unnecessary thalline, adjust cell concentration suitable in fermented liquid, thereby ensure that whole fermenting process completes under higher specific growth rate.
Described fermentor tank 1 is air lift type aerobic fermentation tank, and volume is at 0.1m 3to 50m 3not etc., operating pressure is less than 0.5MPa, and maximum operating temperature is 130 DEG C; Required dissolved oxygen is supplied with by the cruciform air-distributor 8 that is positioned at fermentor tank 1 bottom.
Described film separating system 4 be placed in fermentor tank 1 middle and lower part, be positioned at cruciform air-distributor 8 directly over, be connected by pipeline and peristaltic pump or water suction pump 6, fermentation clear liquid hold-up vessel 4; The bottom of described fermentor tank 1 is provided with waste material Pai Kou, its top is provided with opening for feed and air outlet, and described feed supplement tank 2 is communicated with fermentor tank 1 by opening for feed.
Described film separating system 7 is high temperature resistant, resistant to pollution membrane module, adopts membrane bioreactor screen-type hollow fiber film assembly or bundled tube hollow fiber film assembly or hollow tubular membrane component or plate type membrane assembly.
Shown in the membrane module of film separating system 7 be dynamic hyperfiltration membrane assembly or micro-filtration membrane module, pattern is tubular fibre formula or hollow tubular type or flat, described membrane module can tolerate 125 DEG C of high temperature, operating pressure 0.01-0.20MPa.
The molecular weight cut-off of described ultra-filtration membrane is 10000-100000MW, and the aperture of microfiltration membrane is 0.05-0.2 micron.
The cruciform air-distributor 8 that is positioned at the bottom of fermentor tank 1 is connected with air filtering system 3 by pipeline, one is to provide the required dissolved oxygen of fermentation, the 2nd, play bubbling effect, make hollow-fibre membrane in frequent dither state, slow down the pollution of film separating system 7, institute fills air and purifies through air filtering system 3.
The film separating system 7 that is loaded on the middle and lower part of fermentor tank 1 inside is immersed in fermented liquid while work, by peristaltic pump or water suction pump 6 suction filtrations, the somatic cells in fermented liquid and the amino acid stillness of night is separated.
Described equipment is two-way to temperature, rotating speed, pH(by automatic control system), dissolved oxygen, flow, pressure, feed supplement, foam etc. control, and expanded configuration as the case may be: pressure and flow are controlled automatically, cell concentration detects online, amino acid is online detects etc.
The function of the each parts of the utility model:
Feed supplement tank 2 is mainly used in that stream adds, Additional nutrient solution, and additional amount is regulated by flow automatic control device automatically according to cell concentration and the aminoacids content of the fermented liquid detecting online; The control of dissolved oxygen is regulated by the uncontaminated air feed rate of air filtering system 3 according to online detected result; Film separating system puts 7 in the middle and lower part of fermentor tank 1, can select as required the membrane module of different size, different types, and membrane module outlet is connected with peristaltic pump or water suction pump 6 by pipeline, completes the clarified separation of fermented liquid by the suction of pump; When equipment operation, from cruciform air-distributor 8, the bubble of ejection plays the effect of uniform stirring, complement lysis oxygen on the one hand, and the while washes away the membrane module in fermentor tank 1 in uphill process, thereby slows down the pollution of film.
Workflow of the present utility model:
Before startup, first whole equipment is carried out disinfection, sterilization parameter is 121 DEG C, 30mins.After having sterilized, in fermentor tank, add required various nutritive substances, nutritional factor according to amino acids production technique, regulate suitable carbon-nitrogen ratio, set amino acid fermentation required processing condition, and set the flow of the system of continuously fermenting and multichannel feed supplement automatic control system, cell concentration on-line detecting system, aminoacids content on-line detecting system etc.Amino acids production process adopts continuously or semicontinuous fermentation process, after initial fermented liquid fermentation to a certain extent, (judged by cell concentration and the monitoring of amino acid on-line detecting system), start the film separating system in peristaltic pump or water suction pump and fermentor tank, whole system is on one side toward Additional nutrient solution in fermentor tank, the fermented liquid by the film separating system being submerged in fermented liquid, fermentation being completed on one side separates with the thalline in fermentor tank, and by the fermented liquid suction fermentation clear liquid hold-up vessel of clarification, in order to carrying out crystallization, Preparation of amino acid use.In fermenting process and employing membrane separating fermented liquid process, what purified air by air filtering system and the cruciform air-distributor that is located at fermentor tank bottom supplements, to meet the required dissolved oxygen of fermentation and to slow down the needs that fermented liquid pollutes membrane module.Meanwhile, by automatic feeding system, the nutritive medium in feed supplement tank is constantly added to nutritive medium with certain flow velocity in fermentor tank.
In fermenting process, note the control to fermentation parameter, to ensure ferment required nutritive substance and reaction conditions.
The membrane module cleaning interval in fermentor tank is 150-300 hour.
The above-mentioned embodiment of the utility model, just illustrates, and is not only, all within the scope of the utility model or the change being equal in scope of the present utility model all surrounded by the utility model.

Claims (5)

1. a circulating microorganism fermentation reaction and feed liquid isolation integral equipment, it is characterized in that: comprise fermentor tank (1), feed supplement tank (2), air filtering system (3), fermentation clear liquid hold-up vessel (4), cell concentration and amino acid on-line detecting system (5), equipment automatic control system (6), film separating system (7), cruciform air-distributor (8) and pipeline, described cruciform air-distributor (8) is positioned at the bottom of fermentor tank (1), is connected with air filtering system (3) by pipeline; Described film separating system (4) be placed in fermentor tank (1) middle and lower part, be positioned at cruciform air-distributor (8) directly over, be connected by pipeline and peristaltic pump or water suction pump (6), fermentation clear liquid hold-up vessel (4); The bottom of described fermentor tank (1) is provided with waste material Pai Kou, its top is provided with opening for feed and air outlet, described feed supplement tank (2) be communicated with fermentor tank (1) by opening for feed.
2. circulating microorganism fermentation reaction according to claim 1 and feed liquid isolation integral equipment, it is characterized in that: described fermentor tank (1) is air lift type aerobic fermentation tank, required dissolved oxygen is supplied with by the cruciform air-distributor (8) that is positioned at fermentor tank (1) bottom.
3. circulating microorganism fermentation reaction according to claim 1 and feed liquid isolation integral equipment, is characterized in that: described film separating system (7) is high temperature resistant, resistant to pollution membrane module.
4. circulating microorganism fermentation reaction according to claim 3 and feed liquid isolation integral equipment, it is characterized in that: shown in the membrane module of film separating system (7) be dynamic ultrafiltration or micro-filtration membrane module, pattern is tubular fibre formula or hollow tubular type or flat, membrane module can tolerate 125 DEG C of high temperature, operating pressure 0.01-0.20MPa.
5. circulating microorganism fermentation reaction according to claim 3 and feed liquid isolation integral equipment, is characterized in that: the molecular weight cut-off of described ultra-filtration membrane is 10000-100000MW, the aperture of microfiltration membrane is 0.05-0.2 micron.
CN201420145661.9U 2014-03-28 2014-03-28 Integrated circulating-type microbial fermentation reaction and feed liquid separation device Expired - Fee Related CN203820791U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103865792A (en) * 2014-03-28 2014-06-18 济南大学 Circulating microbial fermentation reaction and feed liquid separation integrated equipment
CN109880734A (en) * 2019-03-30 2019-06-14 中国水产科学研究院黑龙江水产研究所 Amino acid extraction element machine extracting method in a kind of flesh of fish

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103865792A (en) * 2014-03-28 2014-06-18 济南大学 Circulating microbial fermentation reaction and feed liquid separation integrated equipment
CN103865792B (en) * 2014-03-28 2016-02-03 济南大学 A kind of circulating fermentable reaction and feed liquid isolation integral equipment
CN109880734A (en) * 2019-03-30 2019-06-14 中国水产科学研究院黑龙江水产研究所 Amino acid extraction element machine extracting method in a kind of flesh of fish

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Granted publication date: 20140910

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