CN109077289A - The method that anion exchange resin regenerated liquid recycles production monosodium glutamate - Google Patents
The method that anion exchange resin regenerated liquid recycles production monosodium glutamate Download PDFInfo
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- CN109077289A CN109077289A CN201810768602.XA CN201810768602A CN109077289A CN 109077289 A CN109077289 A CN 109077289A CN 201810768602 A CN201810768602 A CN 201810768602A CN 109077289 A CN109077289 A CN 109077289A
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- anion exchange
- exchange resin
- monosodium glutamate
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- mother solution
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- 239000007788 liquid Substances 0.000 title claims abstract description 117
- 239000003957 anion exchange resin Substances 0.000 title claims abstract description 96
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 title claims abstract description 96
- 235000013923 monosodium glutamate Nutrition 0.000 title claims abstract description 96
- 239000004223 monosodium glutamate Substances 0.000 title claims abstract description 92
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 42
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 144
- 230000008929 regeneration Effects 0.000 claims abstract description 102
- 238000011069 regeneration method Methods 0.000 claims abstract description 102
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000010413 mother solution Substances 0.000 claims abstract description 88
- 239000000706 filtrate Substances 0.000 claims abstract description 79
- 150000003839 salts Chemical class 0.000 claims abstract description 59
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 claims abstract description 57
- 235000013922 glutamic acid Nutrition 0.000 claims abstract description 57
- 239000004220 glutamic acid Substances 0.000 claims abstract description 57
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 48
- 238000001914 filtration Methods 0.000 claims abstract description 46
- 239000000843 powder Substances 0.000 claims abstract description 39
- 238000004042 decolorization Methods 0.000 claims abstract description 37
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 claims abstract description 27
- 239000000047 product Substances 0.000 claims abstract description 21
- 230000007062 hydrolysis Effects 0.000 claims abstract description 20
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 20
- 238000005213 imbibition Methods 0.000 claims abstract description 20
- 239000013078 crystal Substances 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims description 73
- 229920005989 resin Polymers 0.000 claims description 73
- 238000002834 transmittance Methods 0.000 claims description 43
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 39
- 238000003756 stirring Methods 0.000 claims description 36
- 150000001450 anions Chemical class 0.000 claims description 25
- 239000011780 sodium chloride Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000004064 recycling Methods 0.000 claims description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 230000003472 neutralizing effect Effects 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 238000006386 neutralization reaction Methods 0.000 claims description 10
- 239000012452 mother liquor Substances 0.000 claims description 6
- 235000017550 sodium carbonate Nutrition 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 125000003011 styrenyl group Chemical class [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 10
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 55
- 239000002585 base Substances 0.000 description 28
- 239000011148 porous material Substances 0.000 description 21
- 238000002425 crystallisation Methods 0.000 description 18
- 230000008025 crystallization Effects 0.000 description 18
- 239000008399 tap water Substances 0.000 description 13
- 235000020679 tap water Nutrition 0.000 description 13
- 238000010792 warming Methods 0.000 description 8
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 6
- 239000003456 ion exchange resin Substances 0.000 description 6
- 229920003303 ion-exchange polymer Polymers 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 235000013305 food Nutrition 0.000 description 5
- 229940049906 glutamate Drugs 0.000 description 5
- 229930195712 glutamate Natural products 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 229940073490 sodium glutamate Drugs 0.000 description 4
- 239000000796 flavoring agent Substances 0.000 description 3
- 235000019634 flavors Nutrition 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 235000018102 proteins Nutrition 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 150000003440 styrenes Chemical class 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 241000512259 Ascophyllum nodosum Species 0.000 description 1
- 208000003643 Callosities Diseases 0.000 description 1
- 241000186226 Corynebacterium glutamicum Species 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 1
- 101100412856 Mus musculus Rhod gene Proteins 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 240000003768 Solanum lycopersicum Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229940024606 amino acid Drugs 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000013330 chicken meat Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- -1 glutamate anion Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 235000013622 meat product Nutrition 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000014571 nuts Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000013555 soy sauce Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000019640 taste Nutrition 0.000 description 1
- 210000001779 taste bud Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 235000019583 umami taste Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
- A23L27/20—Synthetic spices, flavouring agents or condiments
- A23L27/21—Synthetic spices, flavouring agents or condiments containing amino acids
- A23L27/22—Synthetic spices, flavouring agents or condiments containing amino acids containing glutamic acids
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of methods that anion exchange resin regenerated liquid recycles production monosodium glutamate.A method of production monosodium glutamate is recycled by the anion exchange resin regenerated liquid of raw material of glutamic acid, comprising the following steps: 1) glutamic acid neutralizes；2) powder activity carbon decoloring, filtering；3) it collects anion exchange resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering is added；4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, anion exchange resin regeneration；5) destainer is neutralized through anion exchange resin secondary decolourization；6) crystal product.Also disclose a kind of method that production monosodium glutamate is recycled as the anion exchange resin regenerated liquid of raw material using monosodium glutamate crystalline mother solution.The present invention has positive meaning to the regeneration cost for reducing macroporous strong-base anion exchange resin regeneration technology and the cycle-index for increasing regenerated liquid.
Description
Technical field
The present invention relates to the methods that anion exchange resin regenerated liquid recycles production monosodium glutamate.
Background technique
The ingredient of monosodium glutamate is sodium glutamate.Glutamic acid is one of 20 kinds of amino acid of constitutive protein matter, as long as containing in food
There is protein, just contains glutamic acid.The glutamic acid (glutamate anion) of free state be prevalent in conventional food (such as:
Mushroom, kelp, tomato, nut, beans, meat), it is a kind of product of natural metabolism in human body.Glutamate stimulates tongue
The umami receptor of upper taste bud, makes people feel delicious flavour.The high food of delicate flavour is much content of glutamic acid food abundant.
The mankind eat existing more than 100 years history of monosodium glutamate, and as a kind of most widely used fresh adding flavouring, monosodium glutamate is day
So safe and healthy fresh adding flavouring.Modern society, monosodium glutamate are widely used in family and restaurant culinary art, make an addition to various sides extensively
Just in the products such as food, cooked meat product, soy sauce, sauce, even more chickens' extract and the most basic raw material of various compound seasoners.It is global every
Year consumption monosodium glutamate is a kind of most widely used freshener ten thousand tons about more than 300.
China's glutamate production is with a long history, and is glutamate production and consumption big country, and annual output has broken through 2,000,000 tons.Monosodium glutamate
It is through microorganism (Corynebacterium glutamicum) fermentation, to be extracted, neutralization, refined sodium glutamate using cereal such as corns as raw material
Content is equal to or more than 99.0%, particle or powder with special delicate flavour.Glutamate production is to carry out deep processing to agricultural product
High-tech industry.But macroporous strong-base anion exchange resin is according to the resin regeneration (10%NaCl+0.2%NaOH) of preparation method
The preparation method of saline solution, pressure is very big under the increasingly severeer overall situation of current Environmental Protection Situation, how to reduce and is produced into
Originally, reducing quantity of wastewater effluent can guarantee that resin decolorization effect becomes the Important Problems studied in production of gourmet powder again.
Summary of the invention
The present invention is by providing anion exchange resin regeneration to the production technology for improving existing glutamic acid manufacture monosodium glutamate
The method that liquid recycles production monosodium glutamate.
The technical solution used in the present invention is:
A method of it is recycled using glutamic acid as the anion exchange resin regenerated liquid of raw material and produces monosodium glutamate, including with
Lower step:
1) glutamic acid neutralizes: glutamic acid, edible soda ash and water being mixed and neutralized, control pH value is 6.5~7.4, neutralizes temperature
Degree is 60 DEG C~65 DEG C, the Baume degrees >=23 ° B é of neutralizer；
2) powder activity carbon decoloring, filtering: Powdered Activated Carbon, stirring decoloration, mistake is added in the neutralizer obtained to step 1)
Filter obtains neutralizing destainer；
3) it collects anion exchange resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering: recycling yin is added
Ion exchange resin regeneration flows out salt water stripping liquid, and Powdered Activated Carbon, stirring decoloration is added, and filtering obtains resin regeneration filtrate；
4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, anion exchange resin regeneration: step 3) is obtained
The mass concentration that resin regeneration filtrate adds edible refined salt to NaCl is 9%~12%, adds the matter of food-grade caustic soda to NaOH
Measuring concentration is 0.18%~0.22%, then by filtrate constant volume, is regenerated anion exchange resin with filtrate；
5) destainer is neutralized through anion exchange resin secondary decolourization: 40 DEG C~45 DEG C steps 2) being obtained into glutamic acid and are neutralized
Destainer is with 2.5m3/ h~3m3/ h flow velocity passes through the exchange column of anion exchange resin, the white brilliant liquid after obtaining upper prop；
6) crystal product: the white brilliant liquid that step 5) is obtained is crystallized, separation, dry, obtains crystal gourmet powder product.
Using glutamic acid as in the step 2) of feedstock production process, the quality of Powdered Activated Carbon accounts for the 0.5% of neutralizer volume
~1.5%；The time of stirring decoloration is 45 minutes~60 minutes；It obtains neutralizing decolorizing liquid rate >=94%.
Using glutamic acid as in the step 3) of feedstock production process, the quality of Powdered Activated Carbon accounts for resin regeneration outflow salt hydrolysis
The 0.2%~0.3% of imbibition volume；Stirring decoloration be temperature be 60 DEG C~65 DEG C at decolourize 45 minutes~60 minutes.
Using glutamic acid as white brilliant liquid light transmittance >=98% that in the step 5) of feedstock production process, obtains.
Using glutamic acid as in the step 5) of feedstock production process, the diameter of exchange column is 1m~1.5m, a height of 3m~4m, yin
The volume fraction that ion exchange resin accounts for exchange column is 50%~80%.
A method of production monosodium glutamate being recycled by the anion exchange resin regenerated liquid of raw material of monosodium glutamate crystalline mother solution,
The following steps are included:
1) monosodium glutamate crystalline mother solution adjusts: it is 7.6~7.7 that monosodium glutamate crystalline mother solution glutamic acid, which is adjusted pH value, then uses water
The Baume degrees for adjusting mother liquor is 24.5 ° of é~25.5 ° B B é；
2) powder activity carbon decoloring, filtering: Powdered Activated Carbon is added in the crystalline mother solution that step 1) adjustment obtains, stirring is de-
Color, filtering, obtains crystalline mother solution destainer；
3) it collects anion exchange resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering: recycling yin is added
Ion exchange resin regeneration flows out salt water stripping liquid, and Powdered Activated Carbon, stirring decoloration is added, and filtering obtains resin regeneration filtrate；
4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, anion exchange resin regeneration: step 3) is obtained
The mass concentration that resin regeneration filtrate adds edible refined salt to NaCl is 9%~12%, adds the matter of food-grade caustic soda to NaOH
Measuring concentration is 0.18%~0.22%, then by filtrate constant volume, is regenerated anion exchange resin with filtrate；
5) crystalline mother solution destainer is through anion exchange resin secondary decolourization: it is female that 45 DEG C~50 DEG C steps 2) are obtained crystallization
Liquid destainer is with 2.0m3/ h~2.5m3/ h flow velocity passes through the exchange column of anion exchange resin, the crystalline mother solution after obtaining upper prop
Secondary decolourization liquid；
6) crystal product: the crystalline mother solution secondary decolourization liquid that step 5) is obtained is crystallized, separates, is dry, obtains crystal
Msg product.
Using monosodium glutamate crystalline mother solution as in the step 2) of feedstock production process, the quality of Powdered Activated Carbon accounts for neutralizer volume
0.3%~0.4%；Obtain crystalline mother solution decolorizing liquid rate >=70%.
Using monosodium glutamate crystalline mother solution as in the step 3) of feedstock production process, the quality of Powdered Activated Carbon accounts for resin regeneration outflow
The 0.2%~0.3% of salt water stripping liquid volume；Stirring decoloration be temperature be 60 DEG C~65 DEG C at decolourize 45 minutes~60 points
Clock.
Using monosodium glutamate crystalline mother solution as in the step 3) of feedstock production process, the quality of Powdered Activated Carbon accounts for resin regeneration outflow
The 0.2%~0.3% of salt water stripping liquid volume；Stirring decoloration be temperature be 60 DEG C~65 DEG C at decolourize 45 minutes~60 points
Clock.
Using monosodium glutamate crystalline mother solution as the crystalline mother solution secondary decolourization liquid light transmittance that in the step 5) of feedstock production process, obtains
>=80%.
Using monosodium glutamate crystalline mother solution as in the step 5) of feedstock production process, the diameter of exchange column is 1m~1.5m, a height of 3m
~4m, the volume fraction that anion exchange resin accounts for exchange column is 50%~80%.
Anion exchange resin is macroporous strong-base type styrene series anion exchange resin.
Further, anion exchange resin is the AMBERLITETM FPA90Cl resin of Tao Shi.
The beneficial effects of the present invention are:
The present invention is to the regeneration cost for reducing macroporous strong-base anion exchange resin regeneration technology and increases following for regenerated liquid
Ring number has positive meaning.
Specific feature is as follows:
1, the present invention compares the direct preparation method of Tao Shi macroporous strong-base anion exchange resin regenerated liquid, light transmittance with again
The method that raw liquid does not recycle is not much different；2, the present invention Tao Shi macroporous strong-base anion exchange resin regenerated liquid that compares directly is matched
Method processed, light transmittance are not much different with the method that regenerated liquid does not recycle；3, the present invention can reduce regeneration cost 32.9%；4, originally
The regenerated liquid cycle-index of invention can achieve 10 times；5, method of the invention can be in the production of existing glutamic acid manufacture monosodium glutamate
Directly implement on line.
Specific embodiment
A method of it is recycled using glutamic acid as the anion exchange resin regenerated liquid of raw material and produces monosodium glutamate, including with
Lower step:
1) glutamic acid neutralizes: glutamic acid, edible soda ash and water being mixed and neutralized, control pH value is 6.5~7.4, neutralizes temperature
Degree is 60 DEG C~65 DEG C, the Baume degrees >=23 ° B é of neutralizer；
2) powder activity carbon decoloring, filtering: Powdered Activated Carbon, stirring decoloration, mistake is added in the neutralizer obtained to step 1)
Filter obtains neutralizing destainer；
3) it collects anion exchange resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering: recycling yin is added
Ion exchange resin regeneration flows out salt water stripping liquid, and Powdered Activated Carbon, stirring decoloration is added, and filtering obtains resin regeneration filtrate；
4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, anion exchange resin regeneration: step 3) is obtained
The mass concentration that resin regeneration filtrate adds edible refined salt to NaCl is 9%~12%, adds the matter of food-grade caustic soda to NaOH
Measuring concentration is 0.18%~0.22%, then by filtrate constant volume, is regenerated anion exchange resin with filtrate；
5) destainer is neutralized through anion exchange resin secondary decolourization: 40 DEG C~45 DEG C steps 2) being obtained into glutamic acid and are neutralized
Destainer is with 2.5m3/ h~3m3/ h flow velocity passes through the exchange column of anion exchange resin, the white brilliant liquid after obtaining upper prop；
6) crystal product: the white brilliant liquid that step 5) is obtained is crystallized, separation, dry, obtains crystal gourmet powder product.
Preferably, using glutamic acid as in the step 1) of feedstock production process, the Baume degrees of neutralizer is 25 ° of B é.
Preferably, using glutamic acid as in the step 2) of feedstock production process, the quality of Powdered Activated Carbon accounts for neutralizer volume
0.5%~1.5% (W/V).
It preferably, is 45 minutes~60 points by the time in the step 2) of feedstock production process, stirring decoloration of glutamic acid
Clock.
Preferably, decolorizing liquid rate >=94% is neutralized using glutamic acid to obtain in the step 2) of feedstock production process.
Preferably, using glutamic acid as in the step 3) of feedstock production process, the quality of Powdered Activated Carbon accounts for resin regeneration stream
0.2%~0.3% (W/V) of salt water stripping liquid volume out；It is further preferred that the step of using glutamic acid as feedstock production process
3) in, the quality of Powdered Activated Carbon accounts for 0.25% (W/V) of resin regeneration outflow salt water stripping liquid volume.
Preferably, using glutamic acid as in the step 3) of feedstock production process, it is 60 DEG C~65 DEG C that stirring decoloration, which is in temperature,
Lower decoloration 45 minutes~60 minutes.
Preferably, using glutamic acid in the step 2) of feedstock production process or step 3), to be filtered into plate and frame filter press filtering.
Preferably, it is mended by the resin regeneration filtrate that in the step 4) of feedstock production process, step 3) is obtained of glutamic acid
The mass concentration (W/W) for adding edible refined salt to NaCl is 10%, and the mass concentration (W/W) for adding food-grade caustic soda to NaOH is
0.2%.
Preferably, using glutamic acid as in the step 4) of feedstock production process, filtrate is settled to 11m3~13m3；Further
Preferably, using glutamic acid as in the step 4) of feedstock production process, filtrate is settled to 12m3。
Preferably, using glutamic acid as white brilliant liquid light transmittance >=98% that in the step 5) of feedstock production process, obtains.
Preferably, using glutamic acid as in the step 5) of feedstock production process, the diameter of exchange column is 1m~1.5m, a height of 3m
~4m, the volume fraction that anion exchange resin accounts for exchange column is 50%~80%；It is further preferred that using glutamic acid as raw material
In the step 5) of production method, the diameter of exchange column is 1.2m, a height of 3.5m, and exchange column is provided with 2m3~3m3Anion hand over
Change resin；Still further preferably, using glutamic acid as in the step 5) of feedstock production process, exchange column is provided with 2.5m3Yin
Ion exchange resin.
Further, using glutamic acid as in the step 6) of feedstock production process, crystallization, separation are specially to pass through white brilliant liquid
Vacuum concentration crystallizes monosodium glutamate, using centrifuge separation.
A method of production monosodium glutamate being recycled by the anion exchange resin regenerated liquid of raw material of monosodium glutamate crystalline mother solution,
The following steps are included:
1) monosodium glutamate crystalline mother solution adjusts: it is 7.6~7.7 that monosodium glutamate crystalline mother solution glutamic acid, which is adjusted pH value, then uses water
The Baume degrees for adjusting mother liquor is 24.5 ° of é~25.5 ° B B é；
2) powder activity carbon decoloring, filtering: Powdered Activated Carbon is added in the crystalline mother solution that step 1) adjustment obtains, stirring is de-
Color, filtering, obtains crystalline mother solution destainer；
3) it collects anion exchange resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering: recycling yin is added
Ion exchange resin regeneration flows out salt water stripping liquid, and Powdered Activated Carbon, stirring decoloration is added, and filtering obtains resin regeneration filtrate；
4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, anion exchange resin regeneration: step 3) is obtained
The mass concentration that resin regeneration filtrate adds edible refined salt to NaCl is 9%~12%, adds the matter of food-grade caustic soda to NaOH
Measuring concentration is 0.18%~0.22%, then by filtrate constant volume, is regenerated anion exchange resin with filtrate；
5) crystalline mother solution destainer is through anion exchange resin secondary decolourization: it is female that 45 DEG C~50 DEG C steps 2) are obtained crystallization
Liquid destainer is with 2.0m3/ h~2.5m3/ h flow velocity passes through the exchange column of anion exchange resin, the crystalline mother solution after obtaining upper prop
Secondary decolourization liquid；
6) crystal product: the crystalline mother solution secondary decolourization liquid that step 5) is obtained is crystallized, separates, is dry, obtains crystal
Msg product.
Preferably, using monosodium glutamate crystalline mother solution as in the step 1) of feedstock production process, monosodium glutamate crystalline mother solution is by monosodium glutamate knot
Monosodium glutamate crystalline mother solution brilliant, obtained after separation, as using glutamic acid to pass through white brilliant liquid described in the step 6) of feedstock production process
Crystallization, monosodium glutamate crystalline mother solution obtained after separation.
Preferably, using monosodium glutamate crystalline mother solution to be with the Baume degrees that water adjusts mother liquor in the step 1) of feedstock production process
25°Bé。
Preferably, using monosodium glutamate crystalline mother solution as in the step 2) of feedstock production process, the quality of Powdered Activated Carbon accounts for neutralization
0.3%~0.4% (W/V) of liquid product.
Preferably, it is no less than 60 minutes using monosodium glutamate crystalline mother solution in the step 2) of production method, to stir the time of decoloration.
Preferably, using monosodium glutamate crystalline mother solution in the step 2) of feedstock production process, to obtain crystalline mother solution decolorizing liquid
Rate >=70%.
Preferably, using monosodium glutamate crystalline mother solution as in the step 3) of feedstock production process, the quality of Powdered Activated Carbon accounts for resin
0.2%~0.3% (W/V) of regeneration outflow salt hydrolysis imbibition volume.
Preferably, using monosodium glutamate crystalline mother solution as in the step 3) of feedstock production process, it is 60 DEG C that stirring decoloration, which is in temperature,
It decolourizes 45 minutes~60 minutes at~65 DEG C.
Preferably, using monosodium glutamate crystalline mother solution to be filtered into plate compression in the step 2) of feedstock production process or step 3)
Machine filtering.
Preferably, using monosodium glutamate crystalline mother solution as resin regeneration that in the step 4) of feedstock production process, step 3) is obtained
The mass concentration (W/W) that filtrate adds edible refined salt to NaCl is 10%, adds the mass concentration (W/ of food-grade caustic soda to NaOH
It W) is 0.2%.
Preferably, using monosodium glutamate crystalline mother solution as in the step 4) of feedstock production process, filtrate is settled to 11m3~13m3；
It is further preferred that using monosodium glutamate crystalline mother solution as in the step 4) of feedstock production process, filtrate is settled to 12m3。
Preferably, using monosodium glutamate crystalline mother solution as the crystalline mother solution secondary decolourization that in the step 5) of feedstock production process, obtains
Liquid light transmittance >=80%.
Preferably, using monosodium glutamate crystalline mother solution as in the step 5) of feedstock production process, the diameter of exchange column is 1m~1.5m,
A height of 3m~4m, the volume fraction that anion exchange resin accounts for exchange column is 50%~80%；It is further preferred that with monosodium glutamate knot
Brilliant mother liquor is in the step 5) of feedstock production process, and the diameter of exchange column is 1.2m, a height of 3.5m, and exchange column is provided with 2m3~
3m3Anion exchange resin；Still further preferably, using monosodium glutamate crystalline mother solution to hand in the step 5) of feedstock production process
It changes column and is provided with 2.5m3Anion exchange resin.
Further, using monosodium glutamate crystalline mother solution as in the step 6) of feedstock production process, crystallization, separation are specially will crystallization
Mother liquor secondary decolourization liquid crystallizes monosodium glutamate by vacuum concentration, using centrifuge separation.
Preferably, anion exchange resin is macroporous strong-base type styrene series anion exchange resin.
It is further preferred that anion exchange resin is the AMBERLITETM FPA90Cl resin of Tao Shi.
It is exemplified below using the specific technological process of production that glutamic acid manufactures monosodium glutamate as raw material:
Glutamic acid, edible soda ash, tap water → glutamic acid neutralization → powder activity carbon decoloring → filtering → neutralization destainer
The regeneration outflow salt hydrolysis imbibition → collection → addition powder activity carbon decoloring → filtering → collection → filter of → large pore anion resin
Liquid adds that refined salt to NaCl (W/W) score is 10%, to mend food-grade caustic soda to NaOH (W/W) score be 0.2% → filtrate constant volume
White crystalline substance liquid → monosodium glutamate crystallization → monosodium glutamate after → large pore anion resin regeneration → large pore anion resin column secondary decolourization → upper prop
Dry → first packing → inspection of separation → monosodium glutamate → monosodium glutamate packaging.
It is exemplified below using the specific technological process of production that monosodium glutamate crystalline mother solution manufactures monosodium glutamate as raw material:
Monosodium glutamate crystalline mother solution → powder activity carbon decoloring → filtering → crystalline mother solution destainer → large pore anion resin is again
Raw outflow salt water stripping liquid → collection → addition powder activity carbon decoloring → filtering → collection → filtrate adds refined salt to NaCl (W/
W) score is 10%, to mend food-grade caustic soda to NaOH (W/W) be 0.2% → filtrate constant volume → large pore anion resin regeneration → greatly
Crystalline mother solution secondary decolourization liquid → monosodium glutamate crystallization → monosodium glutamate separation → monosodium glutamate is dry after hole resin anion (R.A.) column secondary decolourization → upper prop
Dry → first packing → inspection → monosodium glutamate packaging.
The contents of the present invention are described in further detail below by way of specific embodiment.
Resin mentioned in Examples 1 to 4 is the macroporous type strong alkali anion of Dow Rhom and Hass production
Exchanger resin AMBERLITETM FPA90Cl.Raw material or method used in remaining are the routine of this field unless otherwise specified
Raw material or method.
Embodiment 1:
(1) glutamic acid neutralizes: a small amount of tap water is added in glutamic acid neutralizing tank, opens stirring, 4 tons of glutamic acid are slow
Pouring into neutralizing tank, then constantly addition edible soda ash is neutralized, and neutralizer is settled to 10m with tap water3.Neutralization temperature is 60
DEG C~63 DEG C, it is 6.5~7.0 that pH value is controlled in N-process, 25 ° of B é of Baume degrees of neutralizer.
(2) powder activity carbon decoloring, filtering: by 10m3Neutralizer be added 100kg Powdered Activated Carbon, stirring decoloration 60 points
Then clock carries out filters pressing with flame filter press, obtain the neutralization destainer of light transmittance 95%.
(3) it collects Tao Shi large pore anion resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering is added:
Recycling Tao Shi large pore anion resin regeneration outflow salt hydrolysis imbibition is added the stirring of 0.25% (W/V) Powdered Activated Carbon and is warming up to 60
DEG C~65 DEG C decolourize 45 minutes, resin regeneration filtrate is obtained by filtration through plate and frame filter press.
(4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, the regeneration of Tao Shi large pore anion resin: regeneration filtrate
Add edible refined salt to NaCl (W/W) be 10% and add food-grade caustic soda to NaOH (W/W) be 0.2%, then by filtrate constant volume
To 12m3, the regeneration of Tao Shi macroporous strong-base anion exchange resin.
(5) it neutralizes destainer to decolourize through Tao Shi large pore anion resin column: being in 45 DEG C of glutamic acid and destainer by temperature
With 2.5m3/ h flow velocity is equipped with 2.5m by Φ 1.2m × 3.5m3The exchange column of macroporous strong-base anion exchange resin, obtains upper prop
White brilliant liquid afterwards, white crystalline substance liquid light transmission detects once per hour, and detecting instrument is white during upper prop using 722-S spectrophotometer
Brilliant liquid light transmittance needs to keep >=98%.As white brilliant liquid light transmittance < 98%, then stops neutralizing destainer upper prop, prepare resin column again
It is raw.
The regeneration of Tao Shi resin: the stirring of 0.25% (W/V) Powdered Activated Carbon is added to recycling resin regeneration outflow stripping liquid
It is warming up to 60 DEG C~65 DEG C to decolourize 45 minutes, resin regeneration filtrate is obtained by filtration through plate and frame filter press, then regeneration filtrate is added
Edible refined salt to NaCl (W/W) is 10% and adds food-grade caustic soda to NaOH (W/W) to be 0.2%, then filtrate is settled to
12m3, impregnate 2 hours, be then washed till efflux pH value 7.5, efflux light transmittance >=98% with tap water is suitable, then use tap water
Backwash, which pulls loose, to be put back into.
(6) according to the general production technology of concentrated crystallization, white crystalline substance liquid is separated by monosodium glutamate crystallization, monosodium glutamate, monosodium glutamate is dry,
Obtain crystal gourmet powder product.
Recycling regeneration according to new process 5 Tao Shi macroporous strong-base anion exchange resin regenerated liquids of progress can reach
To the production requirement for neutralizing decolorizing liquid rate >=98%.
The light transmittance of 1 upper prop of embodiment decoloration front and back can be shown in Table 1.
The light transmittance of 1 embodiment of table, 1 upper prop decoloration front and back
Embodiment 2:
(1) glutamic acid neutralizes: a small amount of tap water is added in glutamic acid neutralizing tank, opens stirring, 4 tons of glutamic acid are slow
Pouring into neutralizing tank, then constantly addition edible soda ash is neutralized, and neutralizer is settled to 10m with tap water3.Neutralization temperature is 62
DEG C~65 DEG C, it is 7.0~7.4 that pH value is controlled in N-process, 25 ° of B é of Baume degrees of neutralizer.
(2) powder activity carbon decoloring, filtering: by 10m3Neutralizer be added 100kg Powdered Activated Carbon, stirring decoloration 60 points
Then clock carries out filters pressing with flame filter press, obtain the neutralization destainer of light transmittance 95%.
(3) it collects Tao Shi large pore anion resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering is added:
Recycling Tao Shi large pore anion resin regeneration outflow salt hydrolysis imbibition is added the stirring of 0.25% (W/V) Powdered Activated Carbon and is warming up to 60
DEG C~65 DEG C decolourize 45 minutes, resin regeneration filtrate is obtained by filtration through plate and frame filter press.
(4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, the regeneration of Tao Shi large pore anion resin: regeneration filtrate
Add edible refined salt to NaCl (W/W) be 10% and add food-grade caustic soda to NaOH (W/W) be 0.2%, then by filtrate constant volume
To 12m3, the regeneration of Tao Shi macroporous strong-base anion exchange resin.
(5) it neutralizes destainer to decolourize through Tao Shi large pore anion resin column: being in 45 DEG C of glutamic acid and destainer by temperature
With 2.8m3/ h flow velocity is equipped with 2.5m by Φ 1.2m × 3.5m3The exchange column of macroporous strong-base anion exchange resin, obtains upper prop
White brilliant liquid afterwards, white crystalline substance liquid light transmission detects once per hour, and detecting instrument is white during upper prop using 722-S spectrophotometer
Brilliant liquid light transmittance needs to keep >=98%.As white brilliant liquid light transmittance < 98%, then stops neutralizing destainer upper prop, prepare resin column again
It is raw.
The regeneration of Tao Shi resin: the stirring of 0.25% (W/V) Powdered Activated Carbon is added to recycling resin regeneration outflow stripping liquid
It is warming up to 60 DEG C~65 DEG C to decolourize 45 minutes, resin regeneration filtrate is obtained by filtration through plate and frame filter press, then regeneration filtrate is added
Edible refined salt to NaCl (W/W) is 10% and adds food-grade caustic soda to NaOH (W/W) to be 0.2%, then filtrate is settled to
12m3, impregnate 2 hours, be then washed till efflux pH value 7.5, efflux light transmittance >=98% with tap water is suitable, then use tap water
Backwash, which pulls loose, to be put back into.
(6) according to the general production technology of concentrated crystallization, white crystalline substance liquid is separated by monosodium glutamate crystallization, monosodium glutamate, monosodium glutamate is dry,
Obtain crystal gourmet powder product.
Regeneration is recycled according to new process 10 Tao Shi macroporous strong-base anion exchange resin regenerated liquids of progress to be ok
Reach production requirement, but in cannot reach for 11 times and the production requirement of decolorizing liquid rate >=98%.
The light transmittance of 2 upper prop of embodiment decoloration front and back can be shown in Table 2.
The light transmittance of 2 embodiment of table, 2 upper prop decoloration front and back
| Project | Light transmittance (%) before upper prop decolourizes | Light transmittance (%) after upper prop decoloration |
| It recycles for 1st time | 96.3 | 100 |
| It recycles for 2nd time | 95.5 | 100 |
| It recycles for 3rd time | 95.8 | 100 |
| The 4th recycles | 95.3 | 100 |
| The 5th recycles | 96.0 | 100 |
| It recycles for 6th time | 96.5 | 100 |
| It recycles for 7th time | 95.1 | 99 |
| It recycles for 8th time | 95.3 | 99 |
| It recycles for 9th time | 95.2 | 98 |
| It recycles for 10th time | 95.3 | 98 |
| It recycles for 11st time | 95.5 | 97 |
Embodiment 3:
(1) crystalline mother solution: being adjusted to pH value 7.6 with a small amount of glutamic acid for the sodium glutamate mother liquid that centrifuge separates, then with certainly
The Baume degrees that water adjusts crystalline mother solution is 25 ° of B é.
(2) 0.3% (W/V) powder powder activity carbon decoloring, filtering: is added in the crystalline mother solution for adjusting pH value and Baume degrees
Last active carbon stirring decoloration 60 minutes or more, carries out filters pressing with flame filter press, obtains the crystalline mother solution decoloration of light transmittance 75%
Liquid.
(3) it collects Tao Shi large pore anion resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering is added:
Recycling Tao Shi large pore anion resin regeneration outflow salt hydrolysis imbibition is added the stirring of 0.25% (W/V) Powdered Activated Carbon and is warming up to 60
DEG C~65 DEG C decolourize 45 minutes, resin regeneration filtrate is obtained by filtration through plate and frame filter press.
(4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, the regeneration of Tao Shi large pore anion resin: regeneration filtrate
Add edible refined salt to NaCl (W/W) be 10% and add food-grade caustic soda to NaOH (W/W) be 0.2%, then by filtrate constant volume
To 12m3, the regeneration of Tao Shi macroporous strong-base anion exchange resin.
The regeneration of Tao Shi resin: the stirring of 0.25% (W/V) Powdered Activated Carbon is added to recycling resin regeneration outflow stripping liquid
It is warming up to 60 DEG C~65 DEG C to decolourize 45 minutes, resin regeneration filtrate is obtained by filtration through plate and frame filter press, then regeneration filtrate is added
Edible refined salt to NaCl (W/W) is 10% and adds food-grade caustic soda to NaOH (W/W) to be 0.2%, then filtrate is settled to
12m3, impregnate 2 hours, be then washed till efflux pH value 7.5, efflux light transmittance >=98% with tap water is suitable, then use tap water
Backwash, which pulls loose, to be put back into.
(5) crystalline mother solution destainer is through Tao Shi large pore anion resin column secondary decolourization: by 50 DEG C of crystalline mother solution destainers
With 2.5m3/ h flow velocity is equipped with 2.5m by Φ 1.2m × 3.5m3The exchange column of macroporous strong-base anion exchange resin, obtains upper prop
Crystalline mother solution secondary decolourization liquid afterwards, the light transmission of crystalline mother solution secondary decolourization liquid detect once per hour, and detecting instrument uses 722-S
Spectrophotometer, crystalline mother solution secondary decolourization liquid light transmittance needs to keep >=80% during upper prop.When crystalline mother solution secondary decolourization
Liquid light transmittance < 80% then stops crystalline mother solution destainer upper prop, prepares resin column regeneration.
(6) according to the general production technology of concentrated crystallization, crystalline mother solution secondary decolourization liquid is by monosodium glutamate crystallization, monosodium glutamate point
It is dry from, monosodium glutamate, obtain crystal gourmet powder product.
Recycling regeneration according to new process 5 Tao Shi macroporous strong-base anion exchange resin regenerated liquids of progress can reach
To the production requirement of decolorizing liquid rate >=80%.
The light transmittance of 3 upper prop of embodiment decoloration front and back can be shown in Table 3.
The light transmittance of 3 embodiment of table, 3 upper prop decoloration front and back
| Project | Light transmittance (%) before upper prop decolourizes | Light transmittance (%) after upper prop decoloration |
| It recycles for 1st time | 75.3 | 85.1 |
| It recycles for 2nd time | 74.4 | 85.6 |
| It recycles for 3rd time | 76.1 | 85.7 |
| The 4th recycles | 74.2 | 84.3 |
| The 5th recycles | 75.3 | 84.8 |
Embodiment 4:
(1) crystalline mother solution: being adjusted to pH value 7.7 with a small amount of glutamic acid for the sodium glutamate mother liquid that centrifuge separates, then with certainly
The Baume degrees that water adjusts crystalline mother solution is 25 ° of B é.
(2) 0.3% (W/V) powder powder activity carbon decoloring, filtering: is added in the crystalline mother solution for adjusting pH value and Baume degrees
Last active carbon stirring decoloration 60 minutes or more, carries out filters pressing with flame filter press, obtains the crystalline mother solution decoloration of light transmittance 75%
Liquid.
(3) it collects Tao Shi large pore anion resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering is added:
Recycling Tao Shi large pore anion resin regeneration outflow salt hydrolysis imbibition is added the stirring of 0.25% (W/V) Powdered Activated Carbon and is warming up to 60
DEG C~65 DEG C decolourize 45 minutes, resin regeneration filtrate is obtained by filtration through plate and frame filter press.
(4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, the regeneration of Tao Shi large pore anion resin: regeneration filtrate
Add edible refined salt to NaCl (W/W) be 10% and add food-grade caustic soda to NaOH (W/W) be 0.2%, then by filtrate constant volume
To 12m3, the regeneration of Tao Shi macroporous strong-base anion exchange resin.
The regeneration of Tao Shi resin: the stirring of 0.25% (W/V) Powdered Activated Carbon is added to recycling resin regeneration outflow stripping liquid
It is warming up to 60 DEG C~65 DEG C to decolourize 45 minutes, resin regeneration filtrate is obtained by filtration through plate and frame filter press, then regeneration filtrate is added
Edible refined salt to NaCl mass is 10% and adds food-grade caustic soda to NaOH (W/W) to be 0.2%, then filtrate is settled to
12m3, impregnate 2 hours, be then washed till efflux pH value 7.5, efflux light transmittance >=98% with tap water is suitable, then use tap water
Backwash, which pulls loose, to be put back into.
(5) crystalline mother solution destainer is through Tao Shi large pore anion resin column secondary decolourization: by 50 DEG C of crystalline mother solution destainers
With 2.0m3/ h flow velocity is equipped with 2.5m by Φ 1.2m × 3.5m3The exchange column of macroporous strong-base anion exchange resin, obtains upper prop
Crystalline mother solution secondary decolourization liquid afterwards, the light transmission of crystalline mother solution secondary decolourization liquid detect once per hour, and detecting instrument uses 722-S
Spectrophotometer, crystalline mother solution secondary decolourization liquid light transmittance needs to keep >=80% during upper prop.When crystalline mother solution secondary decolourization
Liquid light transmittance < 80% then stops crystalline mother solution destainer upper prop, prepares resin column regeneration.
(6) according to the general production technology of concentrated crystallization, crystalline mother solution secondary decolourization liquid is by monosodium glutamate crystallization, monosodium glutamate point
It is dry from, monosodium glutamate, obtain crystal gourmet powder product.
Regeneration is recycled according to new process 10 Tao Shi macroporous strong-base anion exchange resin regenerated liquids of progress to be ok
Reach the production requirement of decolorizing liquid rate >=80%, but is carrying out that production requirement cannot be reached 11 times.
The light transmittance of 4 upper prop of embodiment decoloration front and back can be shown in Table 4.
The light transmittance of 4 embodiment of table, 4 upper prop decoloration front and back
| Project | Light transmittance (%) before upper prop decolourizes | Light transmittance (%) after upper prop decoloration |
| It recycles for 1st time | 76.5 | 85.8 |
| It recycles for 2nd time | 75.6 | 85.0 |
| It recycles for 3rd time | 76.2 | 85.2 |
| The 4th recycles | 73.7 | 85.4 |
| The 5th recycles | 75.5 | 84.5 |
| It recycles for 6th time | 76.0 | 84.9 |
| It recycles for 7th time | 72.6 | 83.1 |
| It recycles for 8th time | 73.1 | 83.2 |
| It recycles for 9th time | 75.4 | 82.5 |
| It recycles for 10th time | 75.5 | 80.3 |
| It recycles for 11st time | 76.6 | 78.1 |
Method of the invention has the advantage that
One, Tao Shi macroporous strong-base anion exchange resin of the invention recycles benefit by flowing out stripping liquid using reclaiming
With after regeneration, neutralize method of the destainer through Tao Shi macroporous strong-base anion exchange resin upper prop secondary decolourization, compare Tao Shi
The direct preparation method of macroporous strong-base anion exchange resin regenerated liquid, light transmittance are not much different with the method that regenerated liquid does not recycle.
5 can be shown in Table by neutralizing the new old technology decoloration light transmittance comparing result of destainer, crystalline mother solution destainer.
The new old technology decoloration light transmittance comparison of 5 crystalline mother solution destainer of table
Two, Tao Shi macroporous strong-base anion exchange resin of the invention recycles benefit by flowing out stripping liquid using reclaiming
With after regeneration, method of the crystalline mother solution destainer through Tao Shi macroporous strong-base anion exchange resin upper prop secondary decolourization, compare
The direct preparation method of Tao Shi macroporous strong-base anion exchange resin regenerated liquid, light transmittance differ not with the method that regenerated liquid does not recycle
Greatly.
Three, Tao Shi macroporous strong-base anion exchange resin of the invention recycles benefit by flowing out stripping liquid using reclaiming
With after regeneration, neutralize destainer or crystalline mother solution destainer through Tao Shi macroporous strong-base anion exchange resin upper prop secondary decolourization,
White brilliant liquid or crystalline mother solution secondary decolourization liquid after obtaining upper prop, according still further to the general production technology of concentrated crystallization, by taste
Essence crystallization, monosodium glutamate separation, monosodium glutamate is dry, obtains crystal gourmet powder product, can reduce regeneration cost 32.9%.
Four, Tao Shi macroporous strong-base anion exchange resin of the invention recycles benefit by flowing out stripping liquid using reclaiming
With after regeneration, neutralize destainer or crystalline mother solution destainer through Tao Shi macroporous strong-base anion exchange resin upper prop secondary decolourization,
Regenerated liquid cycle-index can achieve 10 times.
Five, method of the invention needs not move through a large amount of technological transformation, can be in the production of existing glutamic acid manufacture monosodium glutamate
Directly implement on line.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes made without departing from the spirit and principles of the present invention, modification, substitution, combination or simplified,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of method that anion exchange resin regenerated liquid recycles production monosodium glutamate, it is characterised in that: the following steps are included:
1) glutamic acid neutralizes: glutamic acid, edible soda ash and water being mixed and neutralized, control pH value is 6.5~7.4, and neutralization temperature is
60 DEG C~65 DEG C, the Baume degrees >=23 ° B é of neutralizer；
2) powder activity carbon decoloring, filtering: Powdered Activated Carbon, stirring decoloration is added in the neutralizer obtained to step 1), and filtering obtains
To neutralization destainer；
3) it collects anion exchange resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering: recycling anion is added
Exchanger resin regeneration outflow salt hydrolysis imbibition, is added Powdered Activated Carbon, stirring decoloration, and filtering obtains resin regeneration filtrate；
4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, anion exchange resin regeneration: the resin that step 3) is obtained
The mass concentration that regeneration filtrate adds edible refined salt to NaCl is 9%~12%, and the quality for adding food-grade caustic soda to NaOH is dense
Degree is 0.18%~0.22%, then by filtrate constant volume, is regenerated anion exchange resin with filtrate；
5) destainer is neutralized through anion exchange resin secondary decolourization: 40 DEG C~45 DEG C steps 2) are obtained in glutamic acid and decolourized
Liquid is with 2.5m3/ h~3m3/ h flow velocity passes through the exchange column of anion exchange resin, the white brilliant liquid after obtaining upper prop；
6) crystal product: the white brilliant liquid that step 5) is obtained is crystallized, separation, dry, obtains crystal gourmet powder product.
2. a kind of method that anion exchange resin regenerated liquid recycles production monosodium glutamate, it is characterised in that: the following steps are included:
1) monosodium glutamate crystalline mother solution adjusts: it is 7.6~7.7 that monosodium glutamate crystalline mother solution glutamic acid, which is adjusted pH value, is then adjusted with water
The Baume degrees of mother liquor is 24.5 ° of é~25.5 ° B B é；
2) powder activity carbon decoloring, filtering: being added Powdered Activated Carbon for the crystalline mother solution that step 1) adjustment obtains, and stirring is decolourized,
Filtering, obtains crystalline mother solution destainer；
3) it collects anion exchange resin regeneration outflow salt hydrolysis imbibition, powder activity carbon decoloring, filtering: recycling anion is added
Exchanger resin regeneration outflow salt hydrolysis imbibition, is added Powdered Activated Carbon, stirring decoloration, and filtering obtains resin regeneration filtrate；
4) filtrate adds refined salt and food-grade caustic soda, filtrate constant volume, anion exchange resin regeneration: the resin that step 3) is obtained
The mass concentration that regeneration filtrate adds edible refined salt to NaCl is 9%~12%, and the quality for adding food-grade caustic soda to NaOH is dense
Degree is 0.18%~0.22%, then by filtrate constant volume, is regenerated anion exchange resin with filtrate；
5) crystalline mother solution destainer is through anion exchange resin secondary decolourization: it is de- that 45 DEG C~50 DEG C steps 2) are obtained crystalline mother solution
Color liquid is with 2.0m3/ h~2.5m3/ h flow velocity passes through the exchange column of anion exchange resin, and the crystalline mother solution after obtaining upper prop is secondary
Destainer；
6) crystal product: the crystalline mother solution secondary decolourization liquid that step 5) is obtained is crystallized, separates, is dry, obtains crystal gourmet powder
Product.
3. the method that a kind of anion exchange resin regenerated liquid according to claim 1 or 2 recycles production monosodium glutamate,
Be characterized in that: in step 3), the quality of Powdered Activated Carbon accounts for the 0.2%~0.3% of resin regeneration outflow salt water stripping liquid volume；
Stirring decoloration be temperature be 60 DEG C~65 DEG C at decolourize 45 minutes~60 minutes.
4. the method that a kind of anion exchange resin regenerated liquid according to claim 1 or 2 recycles production monosodium glutamate,
Be characterized in that: in step 5), the diameter of exchange column is 1m~1.5m, a height of 3m~4m, and anion exchange resin accounts for exchange column
Volume fraction is 50%~80%.
5. the method that a kind of anion exchange resin regenerated liquid according to claim 1 recycles production monosodium glutamate, special
Sign is: in step 2), the quality of Powdered Activated Carbon accounts for the 0.5%~1.5% of neutralizer volume；The time of stirring decoloration is 45
Minute~60 minutes；It obtains neutralizing decolorizing liquid rate >=94%.
6. the method that a kind of anion exchange resin regenerated liquid according to claim 1 recycles production monosodium glutamate, special
Sign is: in step 5), obtained white brilliant liquid light transmittance >=98%.
7. the method that a kind of anion exchange resin regenerated liquid according to claim 2 recycles production monosodium glutamate, special
Sign is: in step 2), the quality of Powdered Activated Carbon accounts for the 0.3%~0.4% of neutralizer volume；Obtain crystalline mother solution destainer
Light transmittance >=70%.
8. the method that a kind of anion exchange resin regenerated liquid according to claim 2 recycles production monosodium glutamate, special
Sign is: in step 5), obtained crystalline mother solution secondary decolourization liquid light transmittance >=80%.
9. a kind of described in any item anion exchange resin regenerated liquids recycle production monosodium glutamate according to claim 1~8
Method, it is characterised in that: anion exchange resin is macroporous strong-base type styrene series anion exchange resin.
10. the method that a kind of anion exchange resin regenerated liquid according to claim 9 recycles production monosodium glutamate, special
Sign is: anion exchange resin is the AMBERLITETM FPA90Cl resin of Tao Shi.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110975327A (en) * | 2019-12-17 | 2020-04-10 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Automatic control system and automatic control method for decoloring resin column in monosodium glutamate production |
| CN112471485A (en) * | 2020-12-03 | 2021-03-12 | 山东均智生物科技有限公司 | Decolouring refining process for producing gourmet powder |
| CN112914075A (en) * | 2021-03-11 | 2021-06-08 | 广州奥桑味精食品有限公司 | Monosodium glutamate raw material liquid and preparation method and application thereof |
| CN113558217A (en) * | 2021-08-24 | 2021-10-29 | 温州快鹿集团公司 | Refining process of monosodium glutamate |
| CN114260028A (en) * | 2021-12-27 | 2022-04-01 | 同舟纵横（厦门）流体技术有限公司 | Method and device for decoloring sodium glutamate feed liquid |
| CN114287603A (en) * | 2021-12-30 | 2022-04-08 | 呼伦贝尔东北阜丰生物科技有限公司 | Method for improving color intensity of monosodium glutamate product |
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