CN1313275A - Process for extracting glutaminic acid with nano filter membrane - Google Patents
Process for extracting glutaminic acid with nano filter membrane Download PDFInfo
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- CN1313275A CN1313275A CN 01108111 CN01108111A CN1313275A CN 1313275 A CN1313275 A CN 1313275A CN 01108111 CN01108111 CN 01108111 CN 01108111 A CN01108111 A CN 01108111A CN 1313275 A CN1313275 A CN 1313275A
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- glutamic acid
- nanofiltration membrane
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- filter membrane
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Abstract
A process for extracting glutamic acid with nano-filter membrane in the production of monosodium glutamate features that the microfilter membrane is first used to separate out the solid substances such as mycelia and the nano-filter membrane is then used to separate protein, colloid and polyose from fermented liquid for further refining it. Its advantages include high extracte rate, low consumption of acid, water, electricity and steam, and no generation of waste water.
Description
The present invention is a kind of in the glutamate production process, to the extracting method of L-glutamic acid, belongs to the technical field of production of gourmet powder.
The extraction technology of glutamic acid that present domestic glutamate production factory takes mainly contain the low-temperature primary isoelectric point method, etc. electricity-from the friendship method, etc. electricity-zincate process, concentrate-isoelectric point method.What most of factories adopted is the low-temperature primary isoelectric point method, its total recovery can only reach about 90%, and acid, alkali, water, electricity, vapour consumption are big, initial cost and maintenance management expense height, wastewater treatment can not get fine solution, the serious threat existence and the development of glutamate production of traditional technology that we can say extracting glutamic acid.
At present the extracting method of L-glutamic acid is concluded and be can be described as that the method with the low temperature iso-electric point allows glutamic acid crystallization come out from fermented liquid in the glutamate production, with isolating a kind of extracting method of impurity such as mycelium, soluble proteins, colloid, residual sugars.And the method that the present invention takes is a kind of novel separation method of from glutami acid fermentation liquor impurity such as mycelium, soluble proteins, colloid, polysaccharide being separated respectively.
Traditional extracting method will make glutamic acid crystallization transfer iso-electric point with acid, will cool simultaneously, thereby will add a large amount of acid and consume the more energy; Traditional extracting method is that glutamic acid crystallization is come out, because the relation of solubleness always has some L-glutamic acid to stay in the fermented liquid, and various impurity still stays in the fermented liquid, thereby the wastewater treatment difficulty is very big.
Purpose of the present invention just provides a kind ofly can improve the extraction yield of L-glutamic acid, can reduce the consumption and the maintenance cost of acid, water, electricity, vapour again, realizes the glutamic acid extraction method of employing nanofiltration membrane of the zero release of waste water simultaneously.
The glutamic acid extraction method of employing nanofiltration membrane of the present invention is at first to adopt solids such as microfiltration membrane separation of mycelial in the extraction process of L-glutamic acid, and then adopt nanofiltration membrane separation protein, colloid, polysaccharide etc., deliver to refining workshop section after removing ammonia, make fermented liquid after the separation directly reach the requirement of refining workshop section after the quadruple effect low-temperature evaporation concentrates.During solids such as employing microfiltration membrane separation of mycelial, material temperature is 60 ℃-90 ℃, and pressure is 0.2-0.5MPa, and flux is 80～100L/m
2H, pH value are 6-8, and during impurity such as employing nanofiltration membrane separation protein, colloid, polysaccharide, temperature of charge is 40 ℃-60 ℃, and pressure is 0.5-2.5MPa, and flux is 15-25L/m
2H, pH value are 7-12.
The invention has the advantages that:
Extracting method provided by the invention mainly is with microfiltration membrane and nanofiltration membrane impurity to be separated from glutami acid fermentation liquor respectively, need not to adjust the iso-electric point of L-glutamic acid with sulfuric acid, also fermented liquid need not be cooled, therefore not consume a large amount of acid, and very energy-conservation; Separation method provided by the invention is a separating impurity respectively, because impurity shared ratio in fermented liquid is less, thereby the L-glutamic acid that carries out when separating is also few, so total extraction yield of L-glutamic acid must be higher; Extracting method impurity provided by the invention is separated from fermented liquid respectively, and not only impurity can fully utilize, and has realized the zero release of L-glutamic acid high-concentration waste water.
Method technological process provided by the invention is not only very succinct, and the extracting glutamic acid total recovery is very high, can reach more than 98%, has improved 8-10% than the yield of traditional " low-temperature primary iso-electric point " method, has played conclusive effect to reducing product cost.
The consumption of method acid provided by the invention, alkali, water, electricity, vapour significantly reduces, and initial cost and expense of maintenance and management also decrease.Organic impurities in the fermented liquid is separated in the extracting glutamic acid process and is made protein fodder, not only reduces the monosodium glutamate cost, and the problem of waste water is also thoroughly solved.Therefore the cost according to processing method production monosodium glutamate provided by the invention more than 2000 yuan, decreases by 25% from about 8000 yuan present reductions.No matter so analyze from technical standpoint or from economic angle, advantage of the present invention all is very outstanding.
Embodiment of the present invention are as follows:
In the Gourmet Powder Factory of 1.5 ten thousand tons of annual outputs, to use method provided by the invention and extract L-glutamic acid, processing parameter is as follows:
After fermentation ends, at first adopt the temperature more than 100 ℃ that fermented liquid is sterilized, with microfiltration membrane the solid in the fermented liquid (being mainly mycelium) to be separated then, the processing parameter of microfiltration membrane is as follows:
| Material handling | Glutami acid fermentation liquor after the processing |
| Input concentration: | Thalline: 1.5%+ L-glutamic acid 14%+ solubility magazine |
| Temperature: | 80℃ |
| Pressure: | 0.5MPa |
| Flux: | 100L/m 2·h |
| PH value: | 7.0 |
| Membrane area: | 200M 2 |
| Cycles of concentration: | 10 |
| The dialysis water yield: | 20% pair of inlet amount |
| The filtrate quality is wanted | Remove all insolubless |
| The L-glutamic acid yield: | 99.5％ |
The fermented liquid that leaches is adjusted PH with liquefied ammonia fermented liquid is cooled to about 45 ℃ to meta-alkalescence and through plate-type heat exchanger, just can carry out nanofiltration separation soluble proteins, colloid, polysaccharide are removed, the processing parameter of nanofiltration is as follows:
| Material handling | Fermented liquid after micro-filtration is handled |
| Input concentration: | L-glutamic acid 12%+ soluble impurity |
| Temperature: | 45℃ |
| Pressure: | 0.5-2.5MPa |
| Flux: | 20L/m 2·h |
| PH value: | 7-12 |
| Membrane area: | 1200m 2 |
| Cycles of concentration: | 20 |
| The dialysis water yield: | 15-20% is to inlet amount |
| The filtrate specification of quality | Remove impurity such as soluble protein, colloid, polysaccharide more than 85% |
| The L-glutamic acid yield: | More than 99% |
The purity of the glutami acid fermentation liquor after nanofiltration membrane treatment has reached the requirement of back road " refining step " basically, need not carry out again " isoelectric point crystallizing ", concentrate except that just delivering to refining workshop section behind the ammonia through the quadruple effect low-temperature evaporation, the extracting glutamic acid total recovery is about 98%, and non-wastewater discharge, realized real cleaner production.
Claims (3)
1. glutamic acid extraction method that adopts nanofiltration membrane, it is characterized in that in the extraction process of L-glutamic acid, at first adopting solids such as microfiltration membrane separation of mycelial, and then adopt nanofiltration membrane separation protein, colloid, polysaccharide etc., deliver to refining workshop section after removing ammonia, make fermented liquid after the separation directly reach the requirement of refining workshop section after the quadruple effect low-temperature evaporation concentrates.
2. the glutamic acid extraction method of employing nanofiltration membrane according to claim 1, when it is characterized in that adopting solids such as microfiltration membrane separation of mycelial, material temperature is 60 ℃-90 ℃, and pressure is 0.2-0.5MPa, and flux is 80～100L/m
2H, pH value are 6-8.
3. the glutamic acid extraction method of employing nanofiltration membrane according to claim 1 and 2, when it is characterized in that adopting impurity such as nanofiltration membrane separation protein, colloid, polysaccharide, temperature of charge is 40 ℃-60 ℃, and pressure is 0.5-2.5MPa, and flux is 15-25L/m
2H, pH value are 7-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01108111 CN1313275A (en) | 2001-03-05 | 2001-03-05 | Process for extracting glutaminic acid with nano filter membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01108111 CN1313275A (en) | 2001-03-05 | 2001-03-05 | Process for extracting glutaminic acid with nano filter membrane |
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| CN1313275A true CN1313275A (en) | 2001-09-19 |
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| CN 01108111 Pending CN1313275A (en) | 2001-03-05 | 2001-03-05 | Process for extracting glutaminic acid with nano filter membrane |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102028179A (en) * | 2009-09-30 | 2011-04-27 | 湖州欣和环境科技有限公司 | Method for refining gourmet powder mother liquor |
| CN102166008A (en) * | 2011-01-31 | 2011-08-31 | 杭州水处理技术研究开发中心有限公司 | Technology for decoloring refined mother liquor of monosodium glutamate with membrane method |
| CN102365032A (en) * | 2009-03-25 | 2012-02-29 | 雀巢产品技术援助有限公司 | A natural taste enhancing savoury base and a process for its preparation |
| CN103224454A (en) * | 2013-03-18 | 2013-07-31 | 内蒙古阜丰生物科技有限公司 | Glutamic acid separating and extracting technology |
-
2001
- 2001-03-05 CN CN 01108111 patent/CN1313275A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102365032A (en) * | 2009-03-25 | 2012-02-29 | 雀巢产品技术援助有限公司 | A natural taste enhancing savoury base and a process for its preparation |
| CN102028179A (en) * | 2009-09-30 | 2011-04-27 | 湖州欣和环境科技有限公司 | Method for refining gourmet powder mother liquor |
| CN102028179B (en) * | 2009-09-30 | 2013-10-30 | 湖州欣和环境科技有限公司 | Method for refining gourmet powder mother liquor |
| CN102166008A (en) * | 2011-01-31 | 2011-08-31 | 杭州水处理技术研究开发中心有限公司 | Technology for decoloring refined mother liquor of monosodium glutamate with membrane method |
| CN103224454A (en) * | 2013-03-18 | 2013-07-31 | 内蒙古阜丰生物科技有限公司 | Glutamic acid separating and extracting technology |
| CN103224454B (en) * | 2013-03-18 | 2014-07-09 | 内蒙古阜丰生物科技有限公司 | Glutamic acid separating and extracting technology |
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