CN101120766B - Monosodium glutamate green manufacturing technology - Google Patents
Monosodium glutamate green manufacturing technology Download PDFInfo
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- CN101120766B CN101120766B CN200710016436XA CN200710016436A CN101120766B CN 101120766 B CN101120766 B CN 101120766B CN 200710016436X A CN200710016436X A CN 200710016436XA CN 200710016436 A CN200710016436 A CN 200710016436A CN 101120766 B CN101120766 B CN 101120766B
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Abstract
The present invention discloses a green manufacturing process of a monosodium glutamate. The main points of the present invention are that starch is hydrolyzed into glucose which is fermented. The fermentation broth enters into a closed cycle batch by batch. And Alpha-typed glutamic acid is formed by isoelectric point crystallization, which separates with crystal. The Alpha-typed glutamic acid becomes into Beta-typed crystal monosodium glutamate by metacryst. After centrifuging, the bacterial protein is extracted from the centrifugal mother liquor by adding flocculant agents. The clear liquid after flocculating is handled by two stages condensation to get distilled water which is drained out of the closed cycle and is used as cycled process water. The crystal ammonium sulphate is got by desalinating the concentrated mother liquor. After getting crystal ammonium sulphate, the mother liquor is hydrolyzed by acid and is filtered. Then the filtered residue protein feedstuff is discharged out of the closed cycle. The final getting acidity decolor liquid which is rich with glutamic acid takes the place of concentrated sulfuric acid. After membrane filtration, the acidity decolor liquid enters into a regulating jar for recycling. The condensation liquid having been filtered by the membrane is made into high protein feedstuff by spry-drying. The present invention solves the environmental pollution problem caused by the manufacturing of the monosodium glutamate at the root, and promotes the durative development of the manufacturing of the monosodium glutamate.
Description
Technical field the invention belongs to the glutamate production technical field, relates to a kind of monosodium glutamate green manufacturing technology.
Background technology is present, most of glutamate production enterprise mostly uses traditional fermentation mode and produces monosodium glutamate, at first various grains to be made starch, then starch is carried out saccharification, add bacterial classification and carry out fermenting and producing glutamic acid (its chemistry abbreviates GA as), zymotic fluid extracts glutamic acid through isoelectric point crystallization, enters the monosodium glutamate refining step then, be prepared from finished product sodium glutamate, i.e. monosodium glutamate through neutralization decolouring deironing, Crystallization Separation, drying process.There is the technical problem of extracting glutamic acid yield than a large amount of high pollution wastewaters dischargings of the generation in low and the production process in traditional glutamate production method.In order to improve the recovery rate of glutamic acid, at present, electricity such as domestic common employing-reclaim glutamic acid from the skill of handing over the extracting glutamic acid yield in the mother liquor is reached more than 90%, but the side effect that brings from friendship are very big, can discharge a large amount of high concentrated organic wastewaters.And external monosodium glutamate industry is the mycoprotein of removing earlier in the mother liquor, concentrates crystallization more then, and extract yield can reach more than 90%, but the solution up to the present still not yet in effect of the problem of high concentrated organic wastewater.The nineties in 20th century, Europe maximum glutamate production enterprise---the monosodium glutamate food factory in French Ao Sang company and China Guangzhou is joint, earlier remove thalline with hyperfiltration technique, the pulpous state bacterium liquid acid hydrolysis that obtains, the concentrate that hydrolyzate adds after the degerming transfers isoelectric point crystallizing to obtain glutamic acid, and further be condensed into liquid fertilizer behind the crystalline mother solution " desalination ", extract yield is 90%, but this kind advanced person's technology also exists some not enough: the one, and it is very big that liquid fertilizer concentrates power consumption, and value ratio is lower; The 2nd, hyperfiltration technique is applied to large-scale glutamate production, and output investment ratio is bigger; The 3rd, still can not thoroughly solve the problem of the high concentrated organic wastewater of glutamate production.In addition, glutamic acid is of poor quality also to be one of bottleneck of restriction glutamate production quality raising, in order to address this problem, some producer has begun to introduce advanced in the world α type glutamic acid metacrystal technology, promptly before the glutamic acid neutralization, remove the pigment of glutamic acid, principle is under certain pH and temperature, the α type glutamic acid crystal that particle is bigger changes the less β type glutamic acid crystal of particle into, thereby increase the specific area of glutamic acid crystal, the pigment and the impurity that contain in α type glutamic acid crystal inside are come out, most pigment of plane of crystal and impurity can be removed through washing, reduce neutralizer decolouring difficulty, improve acid production rate and glutamic acid quality on the one hand, made it reach top purity, helped improving the quality of monosodium glutamate on the other hand.But the wastewater problem that produces in the metacrystal process does not have good solution as yet.
Summary of the invention the objective of the invention is to solve the technical problem that prior art glutamate production process produces a large amount of waste water, provides a kind of monosodium glutamate green manufacturing technology, to overcome the deficiencies in the prior art.
To achieve these goals, monosodium glutamate green manufacturing technology of the present invention is to improve realization on the basis of existing technology, is undertaken by following processing step:
1) cornstarch is produced fermentation with sugared through the two enzymes method hydrolysis;
2) liquid glucose generates glutami acid fermentation liquor through fermentation;
3) in glutami acid fermentation liquor, add sulfuric acid through the isoelectric point acid adjustment by regulating tank, centrifugation go out α type glutamic acid crystal and etc. electric supernatant;
4) α type glutamic acid crystal is a β type glutamic acid crystal through metacrystal, and β type glutamic acid crystal gets monosodium glutamate finished product and metacrystal mother liquor through refining;
5) in the electric supernatant such as grade of step 3), add high polymer coagulant, after dissolved air flotation, squeeze mycoprotein and supernatant, the mycoprotein drying is as feed addictive;
6) supernatant in the step 5) concentrates through two-stage, and through the evaporation of quadruple effect falling film evaporation system, the distilled water that obtains is as the technology recycle-water, and the gamma-glutamic acid that extracts in the one-level concentrate recycles after sending into the regulating tank acid adjustment;
7) the secondary concentrate gets the crystalline sulfuric acid ammonium through desalination;
8) concentrate behind metacrystal mother liquor and the crystalline sulfuric acid ammonium mixes, and through acid hydrolysis, filtration, gets filter residue protein feed and clear liquid;
9) clear liquid in the step 8) can be regulated next batch zymotic fluid isoelectric point crystallization through entering regulating tank after the membrane filtration and decolorization;
10) concentrate of membrane filtration gets protein feed through spray-drying.
The present invention has obtained following product:
1. isoelectric point crystallization extracts α-glutamic acid, changes the brilliant higher β-glutamic acid of purity that forms then, and final refining forms high-quality monosodium glutamate;
2. after electricity such as zymotic fluid extracts glutamic acid, add an amount of flocculant in mother liquor, the mycoprotein that extracts can be used as feed addictive;
3. operate through desalination by concentrated mother liquor, obtain the crystalline sulfuric acid ammonium, can be used as chemical fertilizer and use;
4. the steam condensate (SC) that produces in the concentration process, promptly distilled water can carry out reuse;
5. a kind of high protein feed of making by the glutamic acid fermentation thalline.
Production technology of the present invention is for the accessory substance that produces in the glutamate production process and the recycling of the three wastes provide a kind of new method.This technology has following outstanding advantage:
1) casted off once and for all traditionally, reduced the consumption of liquefied ammonia and sulfuric acid, reduced production cost, enhanced one's market competitiveness from the preface of handing over;
2) not having secondary pollution, thoroughly solved problem of environmental pollution, is a kind of green manufacturing technology;
3) employing waits the secondary crystallization of electric mother liquor to extract glutamic acid and ammonium sulfate, has not only improved the extract yield of glutamic acid, and has produced the higher inorganic fertilizer ammonium sulfate of added value;
4) purity and the quality of glutamic acid have been improved by the metacrystal technology, for foreign exchange earning provides condition;
5) newly-increased several accessory substances value are all very high, increased the glutamate production economic benefit of enterprises greatly;
Adopt advanced membrane filtration technique when 6) finally disposing waste liquid, improved the quality of product;
In a word, the present invention fundamentally solves the problem of environmental pollution of glutamate production, promotes the sustainable development of glutamate production.Not only reduce production cost, improved economic benefit, promoted product specification; Also realized " recycling economy " of monosodium glutamate, for the cleaner production of monosodium glutamate industry provides example.
Appended drawings is a process flow diagram of the present invention.
The specific embodiment is with reference to accompanying drawing, the starch hydrolysis generates glucose, fermentation forms zymotic fluid then, zymotic fluid enters the closed cycle circle in a batch mode, go out α type glutamic acid and crystal separation through isoelectric point crystallizing earlier, α type glutamic acid becomes β type crystal through metacrystal to enter monosodium glutamate refining then, and the mother liquor after centrifugal extracts mycoprotein through adding flocculant; Clear liquid after the flocculation concentrates through two-stage, and the distilled water that obtains is discharged the closed cycle circle as reuse technology water; Concentrated mother liquor obtains the crystalline sulfuric acid ammonium through the desalination operation; Mother liquor behind the crystalline sulfuric acid ammonium carries out the acid hydrolysis operation of pyroglutamic acid open loop, and filter residue forms protein feed and discharges the closed cycle circle; The acid destainer that is rich in glutamic acid that finally obtains can substitute the concentrated sulfuric acid, can regulate next batch zymotic fluid isoelectric point crystallization through entering regulating tank after the membrane filtration and decolorization, and the filter residue that filters after the concentrate of membrane filtration process spray-drying and the acid hydrolysis can be made high protein feed.
Embodiment monosodium glutamate green manufacturing technology of the present invention is to improve realization on the basis of existing technology, is undertaken by following processing step:
1, use sugared through two enzymes method saccharification production fermentation cornstarch;
2, liquid glucose generates glutami acid fermentation liquor through fermentation;
3, in glutami acid fermentation liquor, add sulfuric acid through the isoelectric point acid adjustment by regulating tank, centrifugation go out α type glutamic acid crystal and etc. electric supernatant;
4, α type glutamic acid crystal is a β type glutamic acid crystal through metacrystal, and β type glutamic acid crystal gets monosodium glutamate finished product and metacrystal mother liquor through refining;
5, step 3) etc. add the Sodium Polyacrylate high polymer coagulant in the electric supernatant, after dissolved air flotation, squeeze mycoprotein and supernatant, the mycoprotein drying is as feed addictive;
6, the supernatant in the step 5) concentrates through two-stage, and through the evaporation of quadruple effect falling film evaporation system, the distilled water that obtains is as the technology recycle-water, and the gamma-glutamic acid that extracts in the one-level concentrate recycles after sending into the regulating tank acid adjustment;
7, the secondary concentrate gets the crystalline sulfuric acid ammonium through desalination;
8, the concentrate behind metacrystal mother liquor and the crystalline sulfuric acid ammonium mixes, and through acid hydrolysis, filtration, gets filter residue protein feed and clear liquid;
9, the clear liquid in the step 8) can be regulated next batch zymotic fluid isoelectric point crystallization through entering regulating tank after the membrane filtration and decolorization;
10, the concentrate of membrane filtration gets protein feed through spray-drying.
Claims (1)
1. monosodium glutamate green manufacturing technology is characterized in that being undertaken by following processing step:
1), cornstarch is produced fermentation with sugared through the two enzymes method hydrolysis;
2), liquid glucose generates glutami acid fermentation liquor through fermentation;
3), in glutami acid fermentation liquor, add sulfuric acid through the isoelectric point acid adjustment, by regulating tank centrifugation go out α type glutamic acid crystal and etc. electric supernatant;
4), α type glutamic acid crystal is β type glutamic acid crystal through metacrystal, β type glutamic acid crystal is through refining, monosodium glutamate finished product and metacrystal mother liquor;
5), step 3) etc. add the Sodium Polyacrylate high polymer coagulant in the electric supernatant, after dissolved air flotation, squeeze mycoprotein and supernatant, the mycoprotein drying is as feed addictive;
6), the supernatant in the step 5) carries out two-stage and concentrates, through the evaporation of quadruple effect falling film evaporation system, the distilled water that obtains is as the technology recycle-water, the gamma-glutamic acid that extracts in the one-level concentrate recycles after sending into the regulating tank acid adjustment;
7), the secondary concentrate is through desalination, the crystalline sulfuric acid ammonium;
8), the concentrate behind metacrystal mother liquor and the crystalline sulfuric acid ammonium mixes, through acid hydrolysis, filtration, filter residue protein feed and clear liquid;
9), the clear liquid in the step 8), regulate next batch zymotic fluid isoelectric point crystallization through entering regulating tank after the membrane filtration and decolorization;
10), the concentrate of membrane filtration gets protein feed through spray-drying.
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| CN200710016436XA CN101120766B (en) | 2007-07-30 | 2007-07-30 | Monosodium glutamate green manufacturing technology |
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| CN200710016436XA CN101120766B (en) | 2007-07-30 | 2007-07-30 | Monosodium glutamate green manufacturing technology |
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| CN101120766B true CN101120766B (en) | 2011-08-10 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101491323B (en) * | 2008-11-12 | 2012-12-26 | 山东阜丰生物科技开发有限公司 | New production technique of sodium glutamate |
| CN102174483B (en) * | 2011-01-30 | 2012-11-21 | 珠海市御品堂生物科技有限公司 | Method for preparing turnip chitin binding protein through macromolecular cold-condensation method |
| CN103039935B (en) * | 2012-12-17 | 2013-11-13 | 福建省建阳武夷味精有限公司 | Process of monosodium glutamate production by rice soaked water |
| CN105111097A (en) * | 2015-09-14 | 2015-12-02 | 宝鸡阜丰生物科技有限公司 | Refining technology for glutamic acid |
| CN109988724A (en) * | 2017-12-31 | 2019-07-09 | 许传高 | A kind of resource utilization group technology of amino acid fermentation waste liquid |
| CN108949864B (en) * | 2018-08-07 | 2020-12-25 | 梁山菱花生物科技有限公司 | Preparation method and application of sugar for glutamic acid fermentation |
| CN110004199A (en) * | 2019-03-13 | 2019-07-12 | 浙江华太生物科技有限公司 | A kind of rice protein, glutamic acid slag processing method |
| CN111363002A (en) * | 2020-02-13 | 2020-07-03 | 北京首钢朗泽新能源科技有限公司 | Method for promoting solid-liquid separation of protein raw material liquid and application thereof |
| CN111808895A (en) * | 2020-07-16 | 2020-10-23 | 刘建阳 | Fermentation method and device for preparing monosodium glutamate by utilizing sweet potatoes |
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| CN1161324A (en) * | 1996-06-25 | 1997-10-08 | 无锡轻工大学 | Method for extracting glutamic acid from fermentation liquor |
| CN1169474A (en) * | 1996-06-21 | 1998-01-07 | 李红光 | Comprehensive utilization and control method for glutamic acid isoelectric mothed liquor in production of gourmet powder |
| CN1762982A (en) * | 2005-07-24 | 2006-04-26 | 山东信乐味精有限公司 | Novel process of extracting glutamic acid from glutamic acid fermentation liquor |
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| CN1169474A (en) * | 1996-06-21 | 1998-01-07 | 李红光 | Comprehensive utilization and control method for glutamic acid isoelectric mothed liquor in production of gourmet powder |
| CN1161324A (en) * | 1996-06-25 | 1997-10-08 | 无锡轻工大学 | Method for extracting glutamic acid from fermentation liquor |
| CN1762982A (en) * | 2005-07-24 | 2006-04-26 | 山东信乐味精有限公司 | Novel process of extracting glutamic acid from glutamic acid fermentation liquor |
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Owner name: INNER MONGOLIA FUFENG BIOTECHNOLOGIES CO., LTD. Free format text: FORMER OWNER: SHANDONG FUFENG BIOLOGY SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20120420 |
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Effective date of registration: 20120420 Address after: 010070 Inner Mongolia Hohhot economic and Technological Development Zone, South Jinchuan district two road Patentee after: Inner Monglia Fufeng Biological Technology Co., Ltd. Address before: 276600 north section of Mount long road, Junan County, Shandong Patentee before: Shandong Fufeng Biology Science & Technology Development Co., Ltd. |