CN112479228A - Refining device and method for ammonium chloride crude product in sucralose chlorination neutralization and salt pressing working section - Google Patents
Refining device and method for ammonium chloride crude product in sucralose chlorination neutralization and salt pressing working section Download PDFInfo
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- CN112479228A CN112479228A CN202011367933.6A CN202011367933A CN112479228A CN 112479228 A CN112479228 A CN 112479228A CN 202011367933 A CN202011367933 A CN 202011367933A CN 112479228 A CN112479228 A CN 112479228A
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- hydrogen peroxide
- kettle
- mother liquor
- decoloring
- ammonium chloride
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- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 235000019270 ammonium chloride Nutrition 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000004376 Sucralose Substances 0.000 title claims abstract description 17
- 235000019408 sucralose Nutrition 0.000 title claims abstract description 17
- BAQAVOSOZGMPRM-QBMZZYIRSA-N sucralose Chemical compound O[C@@H]1[C@@H](O)[C@@H](Cl)[C@@H](CO)O[C@@H]1O[C@@]1(CCl)[C@@H](O)[C@H](O)[C@@H](CCl)O1 BAQAVOSOZGMPRM-QBMZZYIRSA-N 0.000 title claims abstract description 17
- 239000012043 crude product Substances 0.000 title claims abstract description 14
- 238000003825 pressing Methods 0.000 title claims abstract description 14
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 12
- 238000007670 refining Methods 0.000 title claims abstract description 12
- 150000003839 salts Chemical class 0.000 title claims abstract description 12
- 238000005660 chlorination reaction Methods 0.000 title claims abstract description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 114
- 239000000463 material Substances 0.000 claims abstract description 35
- 239000012452 mother liquor Substances 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000005086 pumping Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 17
- 238000002425 crystallisation Methods 0.000 claims description 15
- 230000008025 crystallization Effects 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 9
- 238000005119 centrifugation Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 18
- 230000008901 benefit Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000009270 solid waste treatment Methods 0.000 abstract description 2
- QBKUQMGHFFGGCD-UHFFFAOYSA-N [N].[NH4+].[Cl-] Chemical compound [N].[NH4+].[Cl-] QBKUQMGHFFGGCD-UHFFFAOYSA-N 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 238000004321 preservation Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000002778 food additive Substances 0.000 description 2
- 235000003599 food sweetener Nutrition 0.000 description 2
- 235000000346 sugar Nutrition 0.000 description 2
- 239000003765 sweetening agent Substances 0.000 description 2
- 108010011485 Aspartame Proteins 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 208000008589 Obesity Diseases 0.000 description 1
- UEDUENGHJMELGK-HYDKPPNVSA-N Stevioside Chemical compound O([C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@]12C(=C)C[C@@]3(C1)CC[C@@H]1[C@@](C)(CCC[C@]1([C@@H]3CC2)C)C(=O)O[C@H]1[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O1)O)[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O UEDUENGHJMELGK-HYDKPPNVSA-N 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000605 aspartame Substances 0.000 description 1
- 235000010357 aspartame Nutrition 0.000 description 1
- IAOZJIPTCAWIRG-QWRGUYRKSA-N aspartame Chemical compound OC(=O)C[C@H](N)C(=O)N[C@H](C(=O)OC)CC1=CC=CC=C1 IAOZJIPTCAWIRG-QWRGUYRKSA-N 0.000 description 1
- 229960003438 aspartame Drugs 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000001055 chewing effect Effects 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 235000021185 dessert Nutrition 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 235000013402 health food Nutrition 0.000 description 1
- 235000015243 ice cream Nutrition 0.000 description 1
- 235000015094 jam Nutrition 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 235000020824 obesity Nutrition 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 235000011962 puddings Nutrition 0.000 description 1
- 235000019204 saccharin Nutrition 0.000 description 1
- CVHZOJJKTDOEJC-UHFFFAOYSA-N saccharin Chemical compound C1=CC=C2C(=O)NS(=O)(=O)C2=C1 CVHZOJJKTDOEJC-UHFFFAOYSA-N 0.000 description 1
- 229940081974 saccharin Drugs 0.000 description 1
- 239000000901 saccharin and its Na,K and Ca salt Substances 0.000 description 1
- 229940013618 stevioside Drugs 0.000 description 1
- OHHNJQXIOPOJSC-UHFFFAOYSA-N stevioside Natural products CC1(CCCC2(C)C3(C)CCC4(CC3(CCC12C)CC4=C)OC5OC(CO)C(O)C(O)C5OC6OC(CO)C(O)C(O)C6O)C(=O)OC7OC(CO)C(O)C(O)C7O OHHNJQXIOPOJSC-UHFFFAOYSA-N 0.000 description 1
- 235000019202 steviosides Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 235000021147 sweet food Nutrition 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/16—Halides of ammonium
- C01C1/164—Ammonium chloride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a refining device and a method for ammonium chloride crude products in a sucralose chlorination neutralization salt pressing working section, which are characterized by comprising the following steps: (1) pumping the centrifugal mother liquor in the mother liquor head tank into a hydrogen peroxide decoloring kettle, adding hydrogen peroxide into the hydrogen peroxide decoloring kettle, and controlling the volume ratio of the mother liquor to the hydrogen peroxide to be (95-105): 1, (2) controlling the temperature in the hydrogen peroxide decoloring kettle to be 30-60 ℃, circulating the materials in the hydrogen peroxide decoloring kettle for 25-35min, heating the materials to 60-70 ℃ through a pipeline, and then sending the materials into a dissolving kettle. The invention has the advantages that: the original decoloring technology is improved, and after the decoloring treatment by hydrogen peroxide, the color of the product is obviously improved, and the content of ammonium chloride nitrogen is also improved to more than 24.5 percent; the recovery rate is increased while the product quality is improved, the problem of solid waste treatment generated in the production of sucralose is well solved, and the method has strong environmental protection benefits and economic benefits.
Description
Technical Field
The invention belongs to the technical field of sucralose production, and relates to a refining device and a refining method for ammonium chloride crude products in sucralose chlorination neutralization salt pressing working sections.
Background
Sucralose is used as a novel sweet food additive, has more advantages than sucrose, saccharin, AK sugar, aspartame, stevioside and the like, has high safety and stable performance, is a novel high-quality non-nutritional high-efficiency sweetener, and is an optimal ideal sweet substitute for foods for patients with obesity, cardiovascular diseases and diabetes mellitus; also belongs to the field of fine chemical products, and is a branch product of food additives. It has not only rapidly expanded application range in health food and medicine, but also widely applied to more than 300 processed products such as baked food, beverage, chewing coffee, dairy product, frozen dessert, ice cream, pudding, jelly, jam, syrup and the like, has been widely accepted by the market at present and becomes one of the most popular high-potency sweeteners
In the production process of sucralose, the ammonium chloride crude product generated by centrifugation in the neutralization and salt pressing section contains about 60% of ammonium chloride salt, and because the ammonium chloride crude product contains organic tin, DMF, polychlorinated sugar and other substances, the content and color of the ammonium chloride product cannot reach high quality, and the ammonium chloride product is low in price for direct sale.
Disclosure of Invention
The invention aims to solve the problems of low quality (low content, impure color and the like), low selling price and poor economic benefit of the ammonium chloride crude product produced in the prior art, and provides a device and a method for refining the ammonium chloride crude product in a sucralose chlorination neutralization and salt pressing section.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a refining plant for ammonium chloride crude products in sucralose chlorination neutralization salt pressing section comprises the following existing equipment: mother liquor groove elevated tank, solution cauldron, pressure filter, wash bowl, cooling cauldron, crystallization kettle, centrifuge, centrifugation mother liquor groove, its characterized in that: a hydrogen peroxide decoloring kettle is additionally arranged between the mother liquid head tank and the material dissolving kettle; the mother liquid elevated tank is connected with the top inlet of the hydrogen peroxide decoloring kettle through a pipeline, and the bottom outlet of the hydrogen peroxide decoloring kettle is connected with the top inlet of the dissolving kettle through a pipeline, a pump and a heater; the hydrogen peroxide head tank is connected to the inlet of the hydrogen peroxide decoloring kettle through a pipeline, and the bottom of the hydrogen peroxide decoloring kettle is connected to the top inlet of the hydrogen peroxide decoloring kettle through a pipeline, a pump and a condenser.
A method for refining ammonium chloride crude product in sucralose chlorination neutralization salt pressing working section comprises the following working sections: dissolving, filter pressing, washing, cooling, crystallizing and centrifuging, and is characterized by comprising the following steps:
(1) pumping the mother liquor (from a centrifugal working section) in the high-level tank of the mother liquor tank into a hydrogen peroxide decoloring kettle, adding hydrogen peroxide into the hydrogen peroxide decoloring kettle, and controlling the volume ratio of the mother liquor to the hydrogen peroxide to be 95-105: 1;
(2) controlling the temperature in the hydrogen peroxide decoloring kettle to be 30-60 ℃, circulating the materials in the hydrogen peroxide decoloring kettle for 25-35min, heating the materials to 60-70 ℃ through a pipeline, and then sending the materials into a dissolving kettle.
The invention utilizes the strong oxidizing property of hydrogen peroxide to decolorize the solution of the crude ammonium chloride product, and after heat preservation, the solution is cooled after impurities are removed by a filter press; when the temperature reaches within 45 ℃, a centrifugal machine is used for centrifugal operation to refine the ammonium chloride into refined ammonium chloride products, so as to reduce the production cost of the sucralose and enhance the product competitiveness.
The invention has the advantages that: the original decoloring technology is improved, most of impurities are filtered and removed by a filter press after the decoloration treatment by hydrogen peroxide, so that the color of the product is obviously improved, and the content of ammonium chloride is greatly improved (more than 85 percent); through data comparison in experiments, the recovery rate is increased while the product quality is improved, the problem of solid waste treatment in sucralose production is well solved, and the method has strong environmental protection benefits and economic benefits (see the following table).
Drawings
FIG. 1 is a schematic process flow diagram of the present invention;
FIG. 2 is a schematic diagram of a conventional process.
Detailed Description
The invention is further illustrated with reference to fig. 1:
a refining plant for ammonium chloride crude products in sucralose chlorination neutralization salt pressing section comprises the following equipment: the mother liquid elevated tank is connected with a top inlet of the hydrogen peroxide decoloring kettle through a pipeline, a bottom outlet of the hydrogen peroxide decoloring kettle is connected with a top inlet of the dissolving kettle through a pipeline, a pump and a heater, a bottom outlet of the dissolving kettle is sequentially connected with the filter press, the cooling kettle, the crystallization kettle, the centrifuge, the centrifugal mother liquid tank and the mother liquid tank through pipelines, and an outlet of the mother liquid tank is connected to an inlet of the mother liquid elevated tank through a pipeline; wherein, the outlet at the bottom of the hydrogen peroxide decoloring kettle is connected with the inlet at the top of the hydrogen peroxide decoloring kettle through a pipeline, a pump and a cooler, a pipeline is added on the outlet pipeline of the filter press and connected with the inlet at the top of the rinsing bath, and the outlet at the bottom of the rinsing bath is connected with the inlet pipeline of the filter press through a pipeline and a pump.
A method for refining ammonium chloride crude product in sucralose chlorination neutralization salt pressing section comprises the following specific implementation steps:
example 1
(1) 3500L of mother liquor (from a centrifugal section) is put into a hydrogen peroxide decoloring kettle from a mother liquor head tank, and 18kg of hydrogen peroxide is dripped into the hydrogen peroxide decoloring kettle (heat is released in the dripping process);
(2) opening a circulating pump of the hydrogen peroxide decoloring kettle, cooling the circulating pump by using a condenser, controlling the temperature in the hydrogen peroxide decoloring kettle to be 50-53 ℃, and keeping the temperature in the hydrogen peroxide decoloring kettle stable;
(3) after the dropwise adding is finished, a decoloring kettle feeding pump is used for feeding the materials into a dissolving kettle, and the materials are heated to 60 ℃ by a heater in the process of feeding the materials into the dissolving kettle;
(4) 750kg of crude ammonium chloride product is added into the material dissolving kettle, and 10kg of active carbon is added into the material dissolving kettle; heating the material dissolving kettle to 85 ℃, and preserving heat for 1 hour;
(5) after the heat preservation is finished, the solution in the dissolving kettle is sent to a filter press for filtering and removing impurities, the filtrate is then sent to a cooling kettle for cooling, and when the temperature in the cooling kettle is lower than 50 ℃, the material is put into a crystallization kettle for crystallization;
(6) when the temperature in the crystallization kettle is lower than 40 ℃, centrifuging the materials in the crystallization kettle, packaging the centrifuged crystals (fine ammonium chloride), feeding the centrifuged filtrate into a centrifugal mother liquor tank, and then sequentially pumping into a mother liquor tank and a mother liquor tank head tank.
The quality of the ammonium chloride finished product obtained by the method reaches the top grade, and the nitrogen content is higher (24.8%); the thrown mother liquor can be used mechanically to reduce the discharge of waste water.
Example 2
(1) 3500L of mother liquor (from a centrifugal section) is put into the hydrogen peroxide decoloring kettle from the head tank of the mother liquor tank, and 15kg of hydrogen peroxide is dripped into the hydrogen peroxide decoloring kettle;
(2) opening a circulating pump of the hydrogen peroxide decoloring kettle, cooling the circulating pump by using a condenser, controlling the temperature in the hydrogen peroxide decoloring kettle to be 55-58 ℃, and keeping the temperature in the hydrogen peroxide decoloring kettle stable;
(3) after the dropwise adding is finished, a decoloring kettle feeding pump is used for feeding the materials into a dissolving kettle, and the materials are heated to 60 ℃ by a heater in the process of feeding the materials into the dissolving kettle;
(4) 750kg of crude ammonium chloride product is added into the material dissolving kettle, and 10kg of active carbon is added into the material dissolving kettle; heating the material dissolving kettle to 90 ℃, and preserving heat for 1 hour;
(5) after the heat preservation is finished, the solution in the dissolving kettle is sent to a filter press for filtering and removing impurities, the filtrate is then sent to a cooling kettle for cooling, and when the temperature in the cooling kettle is lower than 50 ℃, the material is put into a crystallization kettle for crystallization;
(6) and when the temperature in the crystallization kettle is lower than 40 ℃, centrifuging the materials in the crystallization kettle, packaging the centrifuged crystals (crude ammonium chloride), feeding the centrifuged filtrate into a centrifugal mother liquor tank, and then sequentially pumping into a mother liquor tank and a mother liquor tank head tank.
The quality of the ammonium chloride finished product obtained by the method reaches the top grade, and the nitrogen content is higher (25.1%); the thrown mother liquor can be used mechanically to reduce the discharge of waste water.
Example 3
(1) 3500L of mother liquor (from a centrifugal section) is put into the hydrogen peroxide decoloring kettle from the head tank of the mother liquor tank, and 20kg of hydrogen peroxide is dripped into the hydrogen peroxide decoloring kettle;
(2) opening a circulating pump of the hydrogen peroxide decoloring kettle, cooling the circulating pump by using a condenser, controlling the temperature in the hydrogen peroxide decoloring kettle to be 33-35 ℃, and keeping the temperature in the hydrogen peroxide decoloring kettle stable;
(3) after the dropwise adding is finished, a decoloring kettle feeding pump is used for feeding the materials into a dissolving kettle, and the materials are heated to 60 ℃ by a heater in the process of feeding the materials into the dissolving kettle;
(4) 750kg of crude ammonium chloride product is added into the material dissolving kettle, and 10kg of active carbon is added into the material dissolving kettle; heating the material dissolving kettle to 95 ℃, and preserving heat for 1 hour;
(5) after the heat preservation is finished, the solution in the dissolving kettle is sent to a filter press for filtering and removing impurities, the filtrate is then sent to a cooling kettle for cooling, and when the temperature in the cooling kettle is lower than 50 ℃, the material is put into a crystallization kettle for crystallization;
(6) and when the temperature in the crystallization kettle is lower than 40 ℃, centrifuging the materials in the crystallization kettle, packaging the centrifuged crystals (crude ammonium chloride), feeding the centrifuged filtrate into a centrifugal mother liquor tank, and then sequentially pumping into a mother liquor tank and a mother liquor tank head tank.
The quality of the ammonium chloride finished product obtained by the method reaches the top grade, and the nitrogen content is higher (24.9%); the thrown mother liquor can be used mechanically to reduce the discharge of waste water.
Claims (2)
1. A refining plant for ammonium chloride crude products in sucralose chlorination neutralization salt pressing section comprises the following existing equipment: mother liquor groove elevated tank, solution cauldron, pressure filter, wash bowl, cooling cauldron, crystallization kettle, centrifuge, centrifugation mother liquor groove, its characterized in that: a hydrogen peroxide decoloring kettle is additionally arranged between the mother liquid head tank and the material dissolving kettle; the mother liquid tank elevated tank is connected with the top inlet of the hydrogen peroxide decoloring kettle through a pipeline, and the bottom outlet of the hydrogen peroxide decoloring kettle is connected with the top inlet of the dissolving kettle through a pipeline, a pump and a heater; the hydrogen peroxide head tank is connected to the inlet of the hydrogen peroxide decoloring kettle through a pipeline, and the bottom of the hydrogen peroxide decoloring kettle is connected to the top inlet of the hydrogen peroxide decoloring kettle through a pipeline, a pump and a condenser.
2. A method for refining ammonium chloride crude product in sucralose chlorination neutralization salt pressing working section comprises the following working sections: dissolving, filter pressing, washing, cooling, crystallizing and centrifuging, and is characterized by comprising the following steps:
(1) pumping the mother liquor in the mother liquor tank head tank into a hydrogen peroxide decoloring kettle, adding hydrogen peroxide into the hydrogen peroxide decoloring kettle, and controlling the volume ratio of the mother liquor to the hydrogen peroxide to be 95-105: 1,
(2) controlling the temperature in the hydrogen peroxide decoloring kettle to be 30-60 ℃, circulating the materials in the hydrogen peroxide decoloring kettle for 25-35min, heating the materials to 60-70 ℃ through a pipeline, and then sending the materials into a dissolving kettle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011367933.6A CN112479228A (en) | 2020-11-30 | 2020-11-30 | Refining device and method for ammonium chloride crude product in sucralose chlorination neutralization and salt pressing working section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011367933.6A CN112479228A (en) | 2020-11-30 | 2020-11-30 | Refining device and method for ammonium chloride crude product in sucralose chlorination neutralization and salt pressing working section |
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| CN112479228A true CN112479228A (en) | 2021-03-12 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1122611A1 (en) * | 1982-09-16 | 1984-11-07 | Belov Vikentij N | Method for purifying ammonium chloride |
| CN102826673A (en) * | 2011-06-15 | 2012-12-19 | 浙江龙盛化工研究有限公司 | Cleaning treatment method of dying industrial acidic wastewater |
| CN106145490A (en) * | 2015-05-12 | 2016-11-23 | 刘风鸣 | A kind of expoxy propane calcium chloride saponification waste-water processes method of resource |
| CN108249460A (en) * | 2018-01-13 | 2018-07-06 | 安徽金禾实业股份有限公司 | In a kind of Sucralose and the processing method of press filtration workshop section ammonium chloride waste residue |
| CN109422399A (en) * | 2017-08-28 | 2019-03-05 | 中国石油化工股份有限公司 | The processing method of ammonium salt-containing waste water |
| CN109608417A (en) * | 2018-10-24 | 2019-04-12 | 科迈化工股份有限公司 | Method by recycling the direct synthesis accelerant MBTS of crude product MBT in resin |
| CN210855657U (en) * | 2019-09-27 | 2020-06-26 | 广东中耀环境科技有限公司 | Waste liquid treatment device |
-
2020
- 2020-11-30 CN CN202011367933.6A patent/CN112479228A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1122611A1 (en) * | 1982-09-16 | 1984-11-07 | Belov Vikentij N | Method for purifying ammonium chloride |
| CN102826673A (en) * | 2011-06-15 | 2012-12-19 | 浙江龙盛化工研究有限公司 | Cleaning treatment method of dying industrial acidic wastewater |
| CN106145490A (en) * | 2015-05-12 | 2016-11-23 | 刘风鸣 | A kind of expoxy propane calcium chloride saponification waste-water processes method of resource |
| CN109422399A (en) * | 2017-08-28 | 2019-03-05 | 中国石油化工股份有限公司 | The processing method of ammonium salt-containing waste water |
| CN108249460A (en) * | 2018-01-13 | 2018-07-06 | 安徽金禾实业股份有限公司 | In a kind of Sucralose and the processing method of press filtration workshop section ammonium chloride waste residue |
| CN109608417A (en) * | 2018-10-24 | 2019-04-12 | 科迈化工股份有限公司 | Method by recycling the direct synthesis accelerant MBTS of crude product MBT in resin |
| CN210855657U (en) * | 2019-09-27 | 2020-06-26 | 广东中耀环境科技有限公司 | Waste liquid treatment device |
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Application publication date: 20210312 |