CN115226878A - Monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount - Google Patents
Monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount Download PDFInfo
- Publication number
- CN115226878A CN115226878A CN202210874557.2A CN202210874557A CN115226878A CN 115226878 A CN115226878 A CN 115226878A CN 202210874557 A CN202210874557 A CN 202210874557A CN 115226878 A CN115226878 A CN 115226878A
- Authority
- CN
- China
- Prior art keywords
- monosodium glutamate
- mother liquor
- resin
- decolorized
- activated carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- 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
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/20—Removal of unwanted matter, e.g. deodorisation or detoxification
- A23L5/27—Removal of unwanted matter, e.g. deodorisation or detoxification by chemical treatment, by adsorption or by absorption
- A23L5/273—Removal of unwanted matter, e.g. deodorisation or detoxification by chemical treatment, by adsorption or by absorption using adsorption or absorption agents, resins, synthetic polymers, or ion exchangers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention belongs to the technical field of monosodium glutamate preparation, and discloses a monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount, which comprises the processes of primary mother liquor cooling and baume degree adjustment generated after crystallization of monosodium glutamate neutralization solution, primary mother liquor adding powdered carbon for decolorization, plate-and-frame filtration, resin decolorization, evaporative concentration, crystallization, drying, packaging and the like. The method is simple and feasible, is easy to operate, can save the consumption of water and acid and alkali, and meets the clean production requirement of national vigorous development.
Description
Technical Field
The invention belongs to the technical field of monosodium glutamate preparation, relates to a production process method of refined monosodium glutamate, and particularly relates to a process method for treating monosodium glutamate mother liquor by using resin.
Background
Monosodium glutamate is a common flavoring agent in daily life, can improve the delicate flavor of food, and is beneficial to improving the digestibility of the food by human bodies. In addition, sodium glutamate has very important functions and is widely applied to the fields of food, medicine, industry, agriculture and the like. The monosodium glutamate mother liquor is the feed liquor left after the monosodium glutamate neutralization liquor is crystallized and the monosodium glutamate is centrifuged, and has more impurities compared with the neutralization liquor.
At present, the common production process of monosodium glutamate in China comprises the following steps: adding water into glutamic acid crystals after fermentation and extraction, adding alkali into the glutamic acid crystals for neutralization and dissolution, adding 5 per mill of powdered carbon into the dissolved monosodium glutamate neutralization solution with the pH value of about 6.3 and the baume degree of 26-27, decoloring at the temperature of 60-65 ℃, stirring and decoloring for half an hour, filtering the powdered carbon by using a plate frame, feeding plate frame filtrate into a carbon column (granular carbon) for secondary decoloring at the flow rate of 1BV/h, concentrating and crystallizing feed liquid subjected to the decoloration by using the carbon column, drying a solid phase to obtain finished monosodium glutamate, taking a liquid phase as a mother solution, and mixing the neutralization solution in proportion to obtain the next-stage monosodium glutamate and the mother solution after successive crystallization.
The prior art has the main problems that:
1. in the traditional process, the light transmittance of the mother liquor is about 70% after the monosodium glutamate neutralization solution is crystallized, and the light transmittance of the mother liquor is about 80% after the mother liquor is decolorized by two stages of activated carbon, so that the light transmittance is improved by about 10%, the improvement range is small, and the monosodium glutamate finished product of the mother liquor is yellow and dark in color and poor in sense.
2. The feeding flow of the carbon columns is controlled to be 1BV/h, the feeding flow is low, a large number of granular carbon columns need to be configured, the consumption of acid, alkali and water for regeneration of corresponding granular carbon is large, the energy consumption is high, and the environmental protection pressure is high.
3. Because the active carbon has a certain adsorption effect on the sodium glutamate, the refining yield of the monosodium glutamate is lower. In order to improve the yield, the powdered carbon needs to be washed by water, and the subsequent process not only increases the energy consumption, but also brings about a lot of environmental protection pressure.
4. The more the mother liquor at each stage is crystallized later, the more the impurities in the next stage of mother liquor are, the lower the index of the obtained monosodium glutamate is; the index of the blending neutralization solution is reduced if the neutralization solution is blended, and the yield is lower if the neutralization solution is not blended; the two-stage activated carbon has lower and lower treatment capacity for each stage of mother liquor.
5. Because the requirement of activated carbon on temperature is high, the decolorizing effect is generally the best at about 50 ℃, steam is needed to heat in the operation, a large amount of steam is needed to be consumed, and the amount of the steam needed by each ton of monosodium glutamate products is 0.3 ton;
6. because the filter speed needs to be considered in the filter pressing, the decoloration liquid needs to be diluted by adding water, so that the concentration of the feed liquid is properly reduced, and the unsmooth filter pressing is avoided. Therefore, the quantity of steam used in concentration is greatly increased by the process of dilution and pressure filtration, and more energy is wasted. According to statistics, the steam consumed by each ton of monosodium glutamate is about 0.2 ton, and the water consumed by each ton of monosodium glutamate is 0.3 ton;
7. due to the use of a large amount of powdered activated carbon, the subsequent working section needs to be filtered and removed by a filter press, so that waste residues are generated, the working environment is deteriorated, and the physical health of operators is also influenced;
disclosure of Invention
In order to solve the technical problems, the invention provides a method for refining monosodium glutamate by resin purification and decoloration, which can purify decolored mother liquor to enable the mother liquor to approach or even reach the index of a neutralization solution, greatly improve the yield of the neutralization solution of monosodium glutamate, reduce the generation of subsequent mother liquor, ensure the bright color of finished monosodium glutamate, reduce the environmental protection pressure and relieve the shortage of labor and energy.
The invention is realized by the following technical scheme:
a monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount comprises the following steps:
1) Crystallizing the glutamic acid neutralization solution, throwing out primary mother liquor by a centrifugal machine, adjusting the Baume degree to 25-30, controlling the temperature to 40-70 ℃ and ensuring that partial fine glutamic acid crystals are completely dissolved;
2) Transferring the mother liquor obtained in the step 1) into a decoloring tank, adding powdered activated carbon, preserving heat at 60-65 ℃, and stirring and decoloring at 20-50rpm for 20-40 minutes;
3) Pumping the material liquid decolorized in the step 2) into a plate frame, filtering and intercepting active carbon, and collecting plate frame filtrate;
4) Pumping the collected plate-frame filtrate in the step 3) into a resin column, and collecting resin decolorized mother liquor;
5) Concentrating and crystallizing the decolorized mother liquor in the step 4), then carrying out solid-liquid separation by using a centrifugal machine, and drying the separated and collected crystals by using a vibrating fluidized bed dryer;
6) And drying the monosodium glutamate and packaging to obtain the finished product monosodium glutamate.
Preferably, the first and second electrodes are formed of a metal,
in the step 1), the Baume degree is adjusted to be 26-27, and the temperature is controlled to be 50-65 ℃.
Preferably, the first and second electrodes are formed of a metal,
in the step 2), the mother liquor and the powdered activated carbon are in a ratio of 1-3 m: 1kg.
Preferably, the first and second electrodes are formed of a metal,
in the step 2), 30rpm was used for stirring and decoloring for 30 minutes.
Preferably, the first and second liquid crystal display panels are,
the resin column is filled with anionic resin.
More preferably still, the first and second liquid crystal compositions are,
the resin column is filled with large-mesh polyacrylic acid series anionic resin.
Most preferably, the first and second liquid crystal display panels are,
the resin column is filled with a large-network polyacrylic acid anionic resin containing quaternary amino functional groups.
Preferably, the flow rate of the mother liquor pumped into the resin column is 1-3BV/h.
Compared with the prior art, the technology of the invention adopts the process, and has the advantages that:
1. the decolouring ability or decolouring depth of the selected resin is obviously higher than that of the activated carbon, the light transmittance of the feed liquid can be improved by about 5% after the feed liquid is decoloured by the activated carbon, and the light transmittance of the feed liquid can be improved by about 20% after the resin is decoloured; the comprehensive index of the mother liquor can be improved to the standard of the neutralization solution, so that the generation of the subsequent mother liquor is greatly reduced, the generation of the last mother liquor is reduced, and the finished product of the monosodium glutamate has high quality index and bright color.
2. The resin decoloration feeding flow is generally higher than 2BV/h, the granular activated carbon decoloration feeding flow is 1BV/h, the using amount of the resin is half of that of the granular activated carbon, the treatment amount is 2 times of that of the activated carbon, and the regeneration consumption is reduced by about 70 percent, so the operation load of the subsequent process is greatly reduced, the cleaning period is prolonged by more than one time, and the amount of waste water generated by cleaning is greatly reduced; energy consumption is greatly saved; the process is simple and convenient to operate and maintain, and the occupied area of equipment is small. The invention does not use granular activated carbon, greatly reduces the using amount of the powdered activated carbon, can reduce the pressure of the resin by using a small amount of the powdered activated carbon, prolongs the service life and the period of the resin, and saves the cost.
3. The granular activated carbon can adsorb a certain amount of monosodium glutamate, the resin does not adsorb monosodium glutamate, monosodium glutamate loss can not be caused by resin decoloration, loss of effective components of monosodium glutamate is reduced, and the generation amount of wastewater is reduced, so that the treatment difficulty of wastewater is reduced, the benign development of the monosodium glutamate industry is facilitated, and a large amount of raw materials and manpower are saved.
4. The method is simple and feasible, is easy to operate, can save the consumption of water and acid and alkali, meets the requirement of clean production of national vigorous development, reduces the discharge amount of waste residues caused by using a large amount of powdered activated carbon, reduces the treatment cost of the waste residues, and solves the problem of difficult treatment of the waste residues; the cost is saved for enterprises, the environmental protection benefit is improved, and the method has good popularization.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the present invention will be described more clearly and completely below with reference to specific embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount comprises the following steps:
1. carrying out 40m high-speed cultivation on the primary mother liquor thrown out by a centrifugal machine after the glutamic acid neutralization solution is crystallized, adjusting the baume degree to be 26-27, controlling the temperature to be 50-65 ℃, and ensuring that partial fine glutamic acid crystals are completely dissolved;
2. transferring the mother liquor obtained in the 40m step in the step 1 into a decoloring tank, adding 20kg of powdered activated carbon, preserving the temperature at 60 ℃, and stirring and decoloring at 30rpm for 30 minutes.
3. And (3) pumping the material liquid decolorized in the step (2) into a plate frame, filtering and intercepting activated carbon, collecting filtrate of the plate frame for carrying out the flowering by about 40m, and transmitting the filtrate of the plate frame for 72.5 percent.
4. Pumping the collected plate and frame filtrate from step 3 into a 2m resin chromatography column (containing quaternary amino functional group-containing macroreticular polyacrylic anionic resin), with a feed flow of 4m 3 And h, collecting the mother liquor which is decolorized by the resin and transmitting light by 90 percent.
5. Independently concentrating and crystallizing the mother liquor, then carrying out solid-liquid separation by using a centrifugal machine, and drying the separated and collected crystals by using a vibrating fluidized bed dryer;
6. the indexes of the finished monosodium glutamate packaged after the monosodium glutamate is dried are as follows: the light transmittance is more than 99%, the large particles of more than 30 meshes are snow white in color, and the crystals are regular.
Example 2
A monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount comprises the following steps:
1. carrying out 60m high-speed cultivation on the primary mother liquor thrown out by a centrifugal machine after the glutamic acid neutralization solution is crystallized, adjusting the baume degree to be 26-27, controlling the temperature to be 60 ℃, and ensuring that part of fine glutamic acid crystals are completely dissolved;
2. transferring the mother liquor obtained in the step 1 and 60m in the step into a decoloring tank, adding 30kg of powdered activated carbon, preserving the temperature at 65 ℃, and stirring at 30rpm for decoloring for 30 minutes.
3. And (3) pumping the material liquid decolorized in the step (2) into a plate frame, filtering and intercepting activated carbon, collecting filtrate of the plate frame for carrying out the full-length plantation at about 60m, and carrying out light transmission on the filtrate of the plate frame for 71.2%.
4. Pumping the collected plate frame filtrate obtained in the step 3 into a 2m resin column (containing quaternary amino functional group-containing large-reticular polyacrylic acid series anionic resin), feeding at a flow rate of 4m3/h, collecting the decolorized mother liquor, and transmitting the decolorized mother liquor by 90%.
5. Independently concentrating and crystallizing the mother liquor, then carrying out solid-liquid separation by using a centrifugal machine, and drying the separated and collected crystals by using a vibrating fluidized bed dryer;
6. the indexes of the finished monosodium glutamate packaged after the monosodium glutamate is dried are as follows: the light transmittance is more than 99%, the large particles of more than 30 meshes are snow white in color, and the crystals are regular.
Example 3
A monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount comprises the following steps:
1. 50m of primary mother liquor thrown out by a centrifugal machine after glutamic acid neutralization solution is crystallized, adjusting the baume degree to be 26-27, controlling the temperature to be 60 ℃, and ensuring that partial fine glutamic acid crystals are completely dissolved;
2. transferring the 50m cauline mother liquor obtained in the step 1 into a decoloring tank, adding 28kg of powdered activated carbon, preserving the temperature at 62 ℃, and stirring and decoloring for 45 minutes at 30 rpm.
3. And (3) pumping the material liquid decolorized in the step (2) into a plate frame, filtering and intercepting activated carbon, collecting plate frame filtrate for carrying out the flowering by about 50m, and carrying out light transmission on the plate frame filtrate by 72.1%.
4. Pumping the collected plate frame filtrate obtained in the step 3 into a 2m resin column (containing quaternary amino functional group-containing large-reticular polyacrylic acid series anionic resin), feeding at a flow rate of 4m3/h, collecting the decolorized mother liquor, and transmitting the decolorized mother liquor by 90%.
5. Independently concentrating and crystallizing the mother liquor, then carrying out solid-liquid separation by using a centrifugal machine, and drying the separated and collected crystals by using a vibrating fluidized bed dryer;
6. the indexes of the finished monosodium glutamate packaged after the monosodium glutamate is dried are as follows: the light transmittance is more than 99 percent, the large particles with more than 30 meshes are snow white in color, and the crystals are regular.
The foregoing list is only illustrative of the preferred embodiments of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by the person skilled in the art from the present disclosure are to be considered within the scope of the present invention.
Claims (7)
1. A monosodium glutamate refining process capable of reducing the amount of monosodium glutamate mother liquor comprises the following steps:
1) Crystallizing the glutamic acid neutralization solution, throwing out primary mother liquor by a centrifugal machine, adjusting the Baume degree to 25-30, controlling the temperature to 40-70 ℃ and ensuring that partial fine glutamic acid crystals are completely dissolved;
2) Transferring the mother liquor obtained in the step 1) into a decoloring tank, adding powdered activated carbon, preserving heat at 60-65 ℃, and stirring and decoloring at 20-50rpm for 20-40 minutes;
3) Pumping the material liquid decolorized in the step 2) into a plate frame, filtering and intercepting active carbon, and collecting plate frame filtrate;
4) Pumping the collected plate-frame filtrate in the step 3) into a resin column, and collecting mother liquor decolorized by resin;
5) Concentrating and crystallizing the decolorized mother liquor in the step 4), then carrying out solid-liquid separation by using a centrifugal machine, and drying the separated and collected crystals by using a vibrating fluidized bed dryer;
6) And drying the monosodium glutamate and packaging to obtain the finished product monosodium glutamate.
2. The process as claimed in claim 1, wherein in the step 1), the baume degree is adjusted to 26-27, and the temperature is controlled to 50-65 ℃.
3. The process according to claim 1, wherein in step 2), the mother liquor and the powdered activated carbon are in a ratio of from 1 to 3m under pressure: 1kg.
4. The process according to claim 1, wherein in the step 2), 30rpm is used for stirring and decoloring for 30 minutes.
5. The process of claim 1, wherein the resin column is packed with an anionic resin.
6. The process of claim 5, wherein the resin column is packed with a large network of polyacrylic anionic resin.
7. The process of claim 6, wherein the resin column is packed with a macroreticular anionic polyacrylic resin containing quaternary amino functional groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210874557.2A CN115226878A (en) | 2022-07-25 | 2022-07-25 | Monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210874557.2A CN115226878A (en) | 2022-07-25 | 2022-07-25 | Monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115226878A true CN115226878A (en) | 2022-10-25 |
Family
ID=83675187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210874557.2A Pending CN115226878A (en) | 2022-07-25 | 2022-07-25 | Monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115226878A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116114854A (en) * | 2023-03-02 | 2023-05-16 | 宝鸡阜丰生物科技有限公司 | Process for improving crystallization rate and grain size of monosodium glutamate |
-
2022
- 2022-07-25 CN CN202210874557.2A patent/CN115226878A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116114854A (en) * | 2023-03-02 | 2023-05-16 | 宝鸡阜丰生物科技有限公司 | Process for improving crystallization rate and grain size of monosodium glutamate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102524701B (en) | Fruit residue dietary fiber and preparation method thereof | |
| CN105713998A (en) | Production technique of xylose | |
| CN105821095A (en) | Optimization method for crystallization of glucose | |
| CN102249855B (en) | Process for preparing erythritol | |
| CN115226878A (en) | Monosodium glutamate refining process capable of reducing monosodium glutamate mother liquor amount | |
| CN101787385B (en) | Preparation method for medical glucose with ultrahigh purity | |
| CN114262352A (en) | System and method for preparing refined xylose and fermentable sugar by using corn straws | |
| CN110551040A (en) | Method for refining monosodium glutamate by adopting macroporous strong base anion resin | |
| CN113025672B (en) | Preparation method of high-purity fructose syrup | |
| CN113248551B (en) | System and method for preparing refined xylose by utilizing xylose mother liquor chromatographic extract | |
| CN114457132A (en) | Method for preparing starch and non-thermal denatured protein powder by using rice as raw material | |
| AU2010318820B2 (en) | Method for producing white sugar, light brown sugar and dark brown sugar using direct recovery process | |
| CN114989241B (en) | Method for producing high-purity rice protein powder and rice syrup | |
| CN105400850B (en) | A kind of production method of starch sugar | |
| CN104557578A (en) | Improved valine extraction process through microbial fermentation and method for preparing foliar fertilizer | |
| CN112479813A (en) | Production process of xylitol | |
| CN110590866B (en) | Method for extracting raffinose | |
| CN108034773B (en) | Method for producing crystal sugar by utilizing simulated moving bed continuous ion exchange | |
| CN111635304B (en) | Preparation method of ferrous gluconate | |
| CN112251282A (en) | 9C production method of functional vegetable oil | |
| EP0277934B1 (en) | Process for preparing sugar syrups by a direct enzymatic saccharification of raw starch-containing materials, especially from fresh or dried cassava roots | |
| CN110846359A (en) | Production method of edible glucose | |
| CN110129389B (en) | Method for preparing low DE value maltodextrin from crushed corn | |
| CN216786017U (en) | System for preparing refined xylose and fermentable sugar by utilizing corn straws | |
| CN1099746A (en) | Method for extracting glutaminic acid from fermentation liquor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |