CN112457185A - Iron-removing purification process for potassium citrate mother liquor - Google Patents
Iron-removing purification process for potassium citrate mother liquor Download PDFInfo
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- CN112457185A CN112457185A CN201910849714.2A CN201910849714A CN112457185A CN 112457185 A CN112457185 A CN 112457185A CN 201910849714 A CN201910849714 A CN 201910849714A CN 112457185 A CN112457185 A CN 112457185A
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- potassium citrate
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- citrate mother
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- 239000001508 potassium citrate Substances 0.000 title claims abstract description 81
- 229960002635 potassium citrate Drugs 0.000 title claims abstract description 81
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 title claims abstract description 81
- 235000011082 potassium citrates Nutrition 0.000 title claims abstract description 81
- 239000012452 mother liquor Substances 0.000 title claims abstract description 49
- 238000000746 purification Methods 0.000 title claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 44
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 30
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000005342 ion exchange Methods 0.000 claims abstract description 11
- 150000001768 cations Chemical class 0.000 claims abstract description 9
- 238000001704 evaporation Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 4
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims abstract description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 101
- 238000002834 transmittance Methods 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- -1 iron ions Chemical class 0.000 claims description 5
- 125000002091 cationic group Chemical group 0.000 claims description 2
- 229920001429 chelating resin Polymers 0.000 claims description 2
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000003763 carbonization Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 238000007865 diluting Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 150000002505 iron Chemical class 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000011282 treatment Methods 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010413 mother solution Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000019025 Hypokalemia Diseases 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 208000024896 potassium deficiency disease Diseases 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000019640 taste Nutrition 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A potassium citrate mother liquor deferrization purification process comprises the following specific steps: (1) adding pure water into the last potassium citrate mother liquor to dilute the potassium citrate mother liquor, and then heating the solution to 60-80 ℃ to obtain a solution A; (2) adding citric acid into the solution A, and adjusting the pH value to 6.5-8.0 to obtain a solution B; (3) adding a certain amount of hydrogen peroxide into the solution B to oxidize ferrous iron in the solution B into ferric iron to obtain solution C; (4) enabling the solution C to pass through an ion exchange column filled with cation resin according to the flow rate of 150L/h-200L/h to obtain a solution D; (5) enabling the solution D to pass through an activated carbon column according to the flow rate of 150L/h-200L/h, and removing the carbon-prone compound to obtain a solution E; (6) and evaporating, crystallizing, centrifugally separating and drying the solution E to obtain a potassium citrate product. The process for purifying the potassium citrate mother liquor can effectively remove iron and easily-carbonized compounds in the potassium citrate mother liquor, improve the yield of the potassium citrate by about 5 percent, realize zero emission of the potassium citrate mother liquor and have remarkable economic benefit and environmental protection benefit.
Description
Technical Field
The invention relates to the technical field of food additives, in particular to a process for removing iron and purifying potassium citrate mother liquor.
Background
The potassium citrate is colorless crystal or white crystalline powder, is easily soluble in water, and tastes salty and cool. In the food industry, buffers, chelating agents, stabilizers, antioxidants, emulsifiers and the like can be used, and in the pharmaceutical industry, the buffers, chelating agents, stabilizers, antioxidants, emulsifiers and the like can be used as anticoagulants, hypokalemia and alkalinized urine treatments.
The production process of potassium citrate is to dissolve citric acid in water and potassium hydroxide solution to carry out neutralization reaction to generate potassium citrate solution. And (3) carrying out fine filtration, evaporative crystallization, centrifugal separation and drying on the potassium citrate solution obtained by the reaction to obtain a finished product of the potassium citrate.
In the industrial production process of potassium citrate, a large amount of final potassium citrate mother liquor is generated, and the mother liquor contains high metal ions such as iron and the like, a small amount of protein colloid, organic impurities and other substances which are easy to carbonize, so that the color of the potassium citrate mother liquor is darkened, the viscosity of the potassium citrate mother liquor is increased, qualified potassium citrate finished products cannot be crystallized, and the potassium citrate finished products can only be used as waste liquor to enter a sewage treatment system. This not only causes huge waste of resources and reduces the yield of potassium citrate product, but also invests in special sewage treatment equipment and costs a lot of treatment cost. The main factors influencing the quality of the potassium citrate through research are iron and easy-to-carbonize compounds in the mother solution, when the content of iron ions in the potassium citrate is more than 10ppm, the product turns yellow, the light transmittance is obviously reduced, and the product quality is obviously reduced. Therefore, if the existing potassium citrate final mother liquor can be purified, the content of iron in the potassium citrate mother liquor is reduced, the standard potassium citrate is obtained, and the yield of the potassium citrate in the production of the potassium citrate can be obviously improved.
Disclosure of Invention
The invention aims to make up for the defects of the prior art and provides a method which is simple in process and can effectively remove iron ions in a potassium citrate mother solution and easily combine with charcoal, so that the quality of prepared potassium citrate is improved.
In order to achieve the purpose, the invention is realized by the following scheme:
the invention provides a potassium citrate mother liquor iron removal purification process, which comprises the following specific steps:
(1) adding pure water into the last potassium citrate mother liquor to dilute the potassium citrate mother liquor, and then heating the solution to 60-80 ℃ to obtain a solution A;
(2) adding citric acid into the solution A obtained in the step (1), and adjusting the pH value to 6.5-8.0 to obtain a solution B;
(3) adding a certain amount of hydrogen peroxide into the solution B obtained in the step (2), and oxidizing ferrous iron in the solution B into ferric iron to obtain a solution C;
(4) enabling the solution C obtained in the step (3) to pass through an ion exchange column filled with cation resin according to the flow rate of 150L/h-200L/h to obtain a solution D, resolving iron ions by using dilute hydrochloric acid after the resin is saturated, and regenerating by using a dilute potassium hydroxide solution;
(5) enabling the solution D obtained in the step (4) to pass through an activated carbon column according to the flow rate of 150L/h-200L/h, and removing carbon-prone compounds to obtain a solution E;
(6) and (5) evaporating, crystallizing, centrifuging and drying the solution E obtained in the step (5) to obtain a potassium citrate product.
Preferably, the diluted specific gravity of the final potassium citrate mother liquor in the step (1) is 1.30-1.35.
Preferably, the cationic resin is one of chelating resins.
Preferably, solution B has a pH of 6.5 to 7.5.
Preferably, the volume of the hydrogen peroxide added in the step (3) is 0.1 percent of the volume of the solution B.
Preferably, the iron content of the solution D in the step (4) is controlled to be 0.5-1.0ppm, and the concentration of hydrochloric acid and potassium hydroxide used is 4-8%.
Preferably, the activated carbon is granular activated carbon.
Preferably, the ion exchange column in step (4) is used in series with the activated carbon column in step (5).
Preferably, the light transmittance of solution E is greater than or equal to 90%.
The invention has the beneficial effects that:
according to the potassium citrate mother liquor purification process, after dilution and pH adjustment, ferrous iron in the potassium citrate mother liquor is oxidized into ferric iron by using hydrogen peroxide, iron ions in the mother liquor are removed through an ion exchange membrane, easily-carbonized compounds in the potassium citrate mother liquor are removed through activated carbon, finally the purified mother liquor is subjected to evaporative crystallization, centrifugal separation and drying to obtain a potassium citrate product, the iron content in the potassium citrate product is stabilized within 5ppm, the light transmittance is stabilized above 95%, the potassium citrate yield is improved by about 5%, zero emission of the potassium citrate mother liquor is achieved, and economic benefits and environmental protection benefits are remarkable.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 potassium citrate mother liquor deferrization purification process comprises the following specific steps:
(1) adding pure water into the last potassium citrate mother liquor, diluting the pure water to the specific gravity of 1.30, and heating the pure water to 60 ℃ under stirring to obtain a solution A;
(2) adding citric acid into the solution A obtained in the step (1), and adjusting the pH value to 6.5 to obtain a solution B;
(3) adding hydrogen peroxide with the volume of 0.1 percent of that of the solution B obtained in the step (2) into the solution B to obtain solution C;
(4) enabling the solution C obtained in the step (3) to pass through an ion exchange column filled with cation resin according to the flow rate of 150L/h to obtain a solution D;
(5) enabling the solution D obtained in the step (4) to pass through an activated carbon column according to the flow rate of 150L/h, and removing the compounds easy to carbonize by utilizing the adsorption decoloration effect of activated carbon to obtain a solution E;
(6) and (5) evaporating, crystallizing, centrifuging and drying the solution E obtained in the step (5) to obtain a potassium citrate product.
Through detection, the content of potassium citrate is as follows: 99.7%, iron salt content: 4.1ppm, transmittance: 97 percent; easy carbonization: less than or equal to 1 percent. The product quality completely meets the requirements of GB 1886.74-2015.
Example 2
A potassium citrate mother liquor deferrization purification process comprises the following specific steps:
(1) adding pure water into the last potassium citrate mother liquor, diluting the pure water to the specific gravity of 1.32, and heating the pure water to 70 ℃ under stirring to obtain a solution A;
(2) adding citric acid into the solution A obtained in the step (1), and adjusting the pH value to 7.0 to obtain a solution B;
(3) adding hydrogen peroxide with the volume of 0.1 percent of that of the solution B obtained in the step (2) into the solution B to obtain solution C;
(4) enabling the solution C obtained in the step (3) to pass through an ion exchange column filled with cation resin according to the flow rate of 180L/h to obtain a solution D;
(5) enabling the solution D obtained in the step (4) to pass through an activated carbon column according to the flow of 180L/h, and removing the compounds easy to carbonize by utilizing the adsorption decoloration effect of activated carbon to obtain a solution E;
(6) and (5) evaporating, crystallizing, centrifuging and drying the solution E obtained in the step (5) to obtain a potassium citrate product.
Through detection, the content of potassium citrate is as follows: 99.6%, iron salt content: 4.3ppm, transmittance: 96.5 percent; easy carbonization: less than or equal to 1 percent. The product quality completely meets the requirements of GB 1886.74-2015.
Example 3
A potassium citrate mother liquor deferrization purification process comprises the following specific steps:
(1) adding pure water into the last potassium citrate mother liquor, diluting the pure water to the specific gravity of 1.35, and heating the pure water to 70 ℃ under stirring to obtain a solution A;
(2) adding citric acid into the solution A obtained in the step (1), and adjusting the pH value to 7.5 to obtain a solution B;
(3) adding hydrogen peroxide with the volume of 0.1 percent of that of the solution B obtained in the step (2) into the solution B to obtain solution C;
(4) enabling the solution C obtained in the step (3) to pass through an ion exchange column filled with cation resin according to the flow rate of 180L/h to obtain a solution D;
(5) enabling the solution D obtained in the step (4) to pass through an activated carbon column according to the flow of 180L/h, and removing the compounds easy to carbonize by utilizing the adsorption decoloration effect of activated carbon to obtain a solution E;
(6) and (5) evaporating, crystallizing, centrifuging and drying the solution E obtained in the step (5) to obtain a potassium citrate product.
Through detection, the content of potassium citrate is as follows: 99.5%, iron salt content: 4.4ppm, transmittance: 95.8 percent; easy carbonization: less than or equal to 1 percent. The product quality completely meets the requirements of GB 1886.74-2015.
Example 4
A potassium citrate mother liquor deferrization purification process comprises the following specific steps:
(1) adding pure water into the last potassium citrate mother liquor, diluting the pure water to the specific gravity of 1.35, and heating the pure water to 80 ℃ under stirring to obtain a solution A;
(2) adding citric acid into the solution A obtained in the step (1), and adjusting the pH value to 8.0 to obtain a solution B;
(3) adding hydrogen peroxide with the volume of 0.1 percent of that of the solution B obtained in the step (2) into the solution B to obtain solution C;
(4) enabling the solution C obtained in the step (3) to pass through an ion exchange column filled with cation resin according to the flow rate of 200L/h to obtain a solution D;
(5) enabling the solution D obtained in the step (4) to pass through an activated carbon column according to the flow of 200L/h, and removing the compounds easy to carbonize by utilizing the adsorption decoloration effect of activated carbon to obtain a solution E;
(6) and (5) evaporating, crystallizing, centrifuging and drying the solution E obtained in the step (5) to obtain a potassium citrate product.
Through detection, the content of potassium citrate is as follows: 99.5%, iron salt content: 4.5ppm, transmittance: 96 percent; easy carbonization: less than or equal to 1 percent. The product quality completely meets the requirements of GB 1886.74-2015.
Example 5
A potassium citrate mother liquor deferrization purification process comprises the following specific steps:
(1) adding pure water into the last potassium citrate mother liquor, diluting the pure water to the specific gravity of 1.30, and heating the pure water to 65 ℃ under stirring to obtain a solution A;
(2) adding citric acid into the solution A obtained in the step (1), and adjusting the pH value to 7.0 to obtain a solution B;
(3) adding hydrogen peroxide with the volume of 0.1 percent of that of the solution B obtained in the step (2) into the solution B to obtain solution C;
(4) enabling the solution C obtained in the step (3) to pass through an ion exchange column filled with cation resin according to the flow rate of 150L/h to obtain a solution D;
(5) enabling the solution D obtained in the step (4) to pass through an activated carbon column according to the flow rate of 150L/h, and removing the compounds easy to carbonize by utilizing the adsorption decoloration effect of activated carbon to obtain a solution E;
(6) and (5) evaporating, crystallizing, centrifuging and drying the solution E obtained in the step (5) to obtain a potassium citrate product.
Through detection, the content of potassium citrate is as follows: 99.7%, iron salt content: 4.2ppm, transmittance: 96.2 percent; easy carbonization: less than or equal to 1 percent. The product quality completely meets the requirements of GB 1886.74-2015.
Example 6
A potassium citrate mother liquor deferrization purification process comprises the following specific steps:
(1) adding pure water into the last potassium citrate mother liquor, diluting the pure water to the specific gravity of 1.35, and heating the pure water to 75 ℃ under stirring to obtain a solution A;
(2) adding citric acid into the solution A obtained in the step (1), and adjusting the pH value to 7.5 to obtain a solution B;
(3) adding hydrogen peroxide with the volume of 0.1 percent of that of the solution B obtained in the step (2) into the solution B to obtain solution C;
(4) enabling the solution C obtained in the step (3) to pass through an ion exchange column filled with cation resin according to the flow rate of 160L/h to obtain a solution D;
(5) enabling the solution D obtained in the step (4) to pass through an activated carbon column according to the flow of 160L/h, and removing the compounds easy to carbonize by utilizing the adsorption and decoloration effects of activated carbon to obtain a solution E;
(6) and (5) evaporating, crystallizing, centrifuging and drying the solution E obtained in the step (5) to obtain a potassium citrate product.
Through detection, the content of potassium citrate is as follows: 99.6%, iron salt content: 4.1ppm, transmittance: 96.5 percent; easy carbonization: less than or equal to 1 percent. The product quality completely meets the requirements of GB 1886.74-2015.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not exhaustive or limiting of the specific embodiments of the invention. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A potassium citrate mother liquor deferrization purification process is characterized by comprising the following specific steps:
(1) adding pure water into the last potassium citrate mother liquor to dilute the potassium citrate mother liquor, and then heating the solution to 60-80 ℃ to obtain a solution A;
(2) adding citric acid into the solution A obtained in the step (1), and adjusting the pH value to 6.5-8.0 to obtain a solution B;
(3) adding a certain amount of hydrogen peroxide into the solution B obtained in the step (2), and oxidizing ferrous iron in the solution B into ferric iron to obtain a solution C;
(4) enabling the solution C obtained in the step (3) to pass through an ion exchange column filled with cation resin according to the flow rate of 150L/h-200L/h to obtain a solution D, resolving iron ions by using dilute hydrochloric acid after the resin is saturated, and regenerating by using a dilute potassium hydroxide solution;
(5) enabling the solution D obtained in the step (4) to pass through an activated carbon column according to the flow rate of 150L/h-200L/h, and removing carbon-prone compounds to obtain a solution E;
(6) and (5) evaporating, crystallizing, centrifuging and drying the solution E obtained in the step (5) to obtain a potassium citrate product.
2. The potassium citrate mother liquor deferrization purification process according to claim 1, characterized in that the final potassium citrate mother liquor in the step (1) has a dilution specific gravity of 1.30-1.35.
3. The potassium citrate mother liquor deferrization purification process according to claim 1, characterized in that the cationic resin is one of chelating resins.
4. The potassium citrate mother liquor deferrization purification process according to claim 1, characterized in that the pH of the solution B is 6.5-7.5.
5. The potassium citrate mother liquor deferrization purification process of claim 1, wherein the volume of hydrogen peroxide added in the step (3) is 0.1% of the volume of the solution B.
6. The potassium citrate mother liquor deferrization purification process according to claim 1, characterized in that in the step (4), the iron content in the solution D is controlled to be 0.5-1.0ppm, and the concentration of the hydrochloric acid and the potassium hydroxide is controlled to be 4-8%.
7. The potassium citrate mother liquor deferrization and purification process of claim 1, wherein the activated carbon is granular activated carbon.
8. The potassium citrate mother liquor deferrization and purification process of claim 1, wherein the ion exchange column in the step (4) is connected with the activated carbon column in the step (5) in series for use.
9. The potassium citrate mother liquor deferrization purification process according to claim 1, characterized in that the light transmittance of the solution E is not less than 90%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113372213A (en) * | 2021-05-18 | 2021-09-10 | 连云港陆兴科技有限公司 | Production system and method of potassium citrate |
| CN114315502A (en) * | 2021-12-31 | 2022-04-12 | 南京化学试剂股份有限公司 | Method for purifying low-moisture high-purity xylene |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2883329A (en) * | 1955-07-11 | 1959-04-21 | Melle Usines Sa | Process for producing citric acid |
| GB905817A (en) * | 1960-02-01 | 1962-09-12 | Miles Lab | Improvements in the purification of citric acid |
| CN1083470A (en) * | 1993-06-10 | 1994-03-09 | 李秀 | The method of producing citric acit from acetylene offscum |
| DE19747902A1 (en) * | 1997-10-30 | 1999-05-12 | Metallgesellschaft Ag | Process for the production of citric acid and / or citrates |
| WO2007051309A1 (en) * | 2005-11-04 | 2007-05-10 | Alternate Energy Corporation | Process for preparing a metallic salt and recovering hydrogen gas |
| CN101407454A (en) * | 2007-10-13 | 2009-04-15 | 黄石兴华生化有限公司 | Process for preparing citrate salt from mother liquor for citric acid production |
| WO2012154498A2 (en) * | 2011-05-06 | 2012-11-15 | Advanced Technology Materials, Inc. | Removal of metal impurities from silicon surfaces for solar cell and semiconductor applications |
| CN103864604A (en) * | 2014-02-25 | 2014-06-18 | 日照金禾博源生化有限公司 | Purification treatment technology for iron removal from sodium citrate mother liquor |
| CN103896762A (en) * | 2012-12-28 | 2014-07-02 | 中粮营养健康研究院有限公司 | Purifying method of citric acid-containing solution |
| CN104045551A (en) * | 2014-05-27 | 2014-09-17 | 日照金禾博源生化有限公司 | Recycling method of unqualified sodium citrate mother liquor |
| CN105061196A (en) * | 2015-09-15 | 2015-11-18 | 安徽丰原发酵技术工程研究有限公司 | Method for extracting potassium citrate from last potassium citrate mother solution |
-
2019
- 2019-09-09 CN CN201910849714.2A patent/CN112457185A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2883329A (en) * | 1955-07-11 | 1959-04-21 | Melle Usines Sa | Process for producing citric acid |
| GB905817A (en) * | 1960-02-01 | 1962-09-12 | Miles Lab | Improvements in the purification of citric acid |
| CN1083470A (en) * | 1993-06-10 | 1994-03-09 | 李秀 | The method of producing citric acit from acetylene offscum |
| DE19747902A1 (en) * | 1997-10-30 | 1999-05-12 | Metallgesellschaft Ag | Process for the production of citric acid and / or citrates |
| WO2007051309A1 (en) * | 2005-11-04 | 2007-05-10 | Alternate Energy Corporation | Process for preparing a metallic salt and recovering hydrogen gas |
| CN101407454A (en) * | 2007-10-13 | 2009-04-15 | 黄石兴华生化有限公司 | Process for preparing citrate salt from mother liquor for citric acid production |
| WO2012154498A2 (en) * | 2011-05-06 | 2012-11-15 | Advanced Technology Materials, Inc. | Removal of metal impurities from silicon surfaces for solar cell and semiconductor applications |
| CN103896762A (en) * | 2012-12-28 | 2014-07-02 | 中粮营养健康研究院有限公司 | Purifying method of citric acid-containing solution |
| CN103864604A (en) * | 2014-02-25 | 2014-06-18 | 日照金禾博源生化有限公司 | Purification treatment technology for iron removal from sodium citrate mother liquor |
| CN104045551A (en) * | 2014-05-27 | 2014-09-17 | 日照金禾博源生化有限公司 | Recycling method of unqualified sodium citrate mother liquor |
| CN105061196A (en) * | 2015-09-15 | 2015-11-18 | 安徽丰原发酵技术工程研究有限公司 | Method for extracting potassium citrate from last potassium citrate mother solution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113372213A (en) * | 2021-05-18 | 2021-09-10 | 连云港陆兴科技有限公司 | Production system and method of potassium citrate |
| CN114315502A (en) * | 2021-12-31 | 2022-04-12 | 南京化学试剂股份有限公司 | Method for purifying low-moisture high-purity xylene |
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