A pretreatment device for raw materials in the production of high-purity Kathon
By combining an ultrasonic reactor, a ceramic membrane device, and other components, the problem of impurities affecting product stability in Kathon production was solved, enabling the production of high-purity Kathon, improving product quality, and reducing production costs.
Patent Information
- Application Number
- CN202520824747.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-26
- Estimated Expiration
- 2035-04-28
AI Technical Summary
In current Kathon production, impurities in the raw materials affect product stability and anti-corrosion performance, requiring a highly efficient pretreatment device to remove impurities and improve product purity and quality.
The pretreatment process, consisting of components such as an ultrasonic reactor, ceramic membrane device, strong acid cation exchange resin column, static mixer and molecular sieve adsorption tower, removes impurities and contaminants from the raw materials and improves product purity through steps such as ultrasonic mixing, filtration separation, pH adjustment and component separation.
It achieves efficient mixing and separation of raw materials, removes macromolecular and cationic impurities, adjusts pH value, improves product purity and stability, and reduces production costs and environmental pollution.
Smart Images
Figure CN224271154U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of Kathon production technology, specifically to a pretreatment device for raw materials in the production of high-purity Kathon. Background Technology
[0002] Isothiazolinones are bactericides with the chemical formula C8H9ClN2O2S2, primarily composed of 5-chloro-2-methyl-4-isothiazolin-3-one (CIT) and 2-methyl-4-isothiazolin-3-one (MIT). Isothiazolinones exert their bactericidal effect by breaking the bonds in the proteins of bacteria and algae. Upon contact with microorganisms, isothiazolinones rapidly and irreversibly inhibit their growth, leading to cell death. Therefore, they have a strong inhibitory and bactericidal effect on common bacteria, fungi, and algae.
[0003] The main raw material of Kathon, methylchloroisothiazolinone, contains synthetic solvents such as ethanol / isopropanol and impurities such as water, which directly affect the stability and anti-corrosion performance of Kathon products. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide a pretreatment device for raw materials in the production of high-purity Kathon, which has a good effect on removing impurities and improves the stability and anti-corrosion performance of Kathon products, in order to address the shortcomings of the existing technology.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:
[0006] A pretreatment device for raw materials in the production of high-purity Kathon includes an ultrasonic reactor. The inlet of the ultrasonic reactor is connected to a methylchloroisothiazolinone raw material tank and a deionized water tank via pipelines. The outlet of the ultrasonic reactor is connected to a ceramic membrane device via a screw pump. The liquid phase outlet of the ceramic membrane device is connected to a distillation column via a pipeline. The top gas phase outlet of the distillation column is connected to a light component tank, an organic solvent tank, and a purified methylchloroisothiazolinone tank via pipelines.
[0007] As an improved technical solution, the inlet of the ultrasonic reactor is connected to a diatomaceous earth tank via a pipeline.
[0008] As an improved technical solution, the liquid phase outlet of the ceramic membrane device is connected to a strongly acidic cation exchange resin column via a pipeline, and the outlet of the strongly acidic cation exchange resin column is connected to the distillation column via a pipeline.
[0009] As an improved technical solution, the outlet of the strongly acidic cation exchange resin column is connected to a regulating tank via a pipeline, the inlet of the regulating tank is connected to a disodium hydrogen phosphate solution tank via a pipeline, and the outlet of the regulating tank is connected to the distillation column via a pipeline.
[0010] As an improved technical solution, a circulation pump is provided on the outlet pipe of the regulating tank, the outlet of the circulation pump is connected to a static mixer through a pipe, and the outlet of the static mixer is connected to the inlet of the regulating tank through a pipe.
[0011] As an improved technical solution, the regulating tank is equipped with an online pH sensor, and the outlet pipe of the disodium hydrogen phosphate solution tank is equipped with a shut-off valve. The online pH sensor and the shut-off valve are interlocked to the control system.
[0012] As a preferred technical solution, the outlet of the light component tank is connected to a phase separation tank via a pipeline, the outlet of the phase separation tank is connected to a wastewater tank and an organic phase tank via pipelines, the outlet of the organic phase tank is connected to a vacuum distillation tower via a pipeline, and the outlet of the vacuum distillation tower is connected to a first solvent recovery tank via a pipeline.
[0013] As a preferred technical solution, the outlet of the organic solvent tank is connected to a molecular sieve adsorption tower via a pipeline, and the outlet of the molecular sieve adsorption tower is connected to a second solvent recovery tank via a pipeline.
[0014] Due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0015] This invention discloses a pretreatment device for raw materials in the production of high-purity Kathon, comprising an ultrasonic reactor. The inlet of the ultrasonic reactor is connected via pipelines to a methylchloroisothiazolinone raw material tank and a deionized water tank. The outlet of the ultrasonic reactor is connected via a screw pump to a ceramic membrane device. The liquid phase outlet of the ceramic membrane device is connected via pipelines to a distillation column. The top gas phase outlet of the distillation column is connected via pipelines to a light component tank, an organic solvent tank, and a purified methylchloroisothiazolinone tank. The methylchloroisothiazolinone raw material is mixed with deionized water in the ultrasonic reactor. Utilizing the cavitation and mechanical effects of ultrasound, the dissolution and dispersion of the raw material are accelerated, resulting in a more uniform mixture and improved reaction efficiency. This lays a good mixing foundation for the subsequent production of high-purity Kathon. The ceramic membrane device has high-precision filtration and separation performance, effectively trapping large molecular impurities, suspended solids, and incompletely reacted particles in the reaction system, achieving solid-liquid separation, improving the purity of the material entering the distillation column, and ensuring the smooth progress of the subsequent distillation process and product quality. The distillation column utilizes the boiling point differences of the components to distill and separate the liquid phase after ceramic membrane filtration. The light components, organic solvents, and refined methylchloroisothiazolinone are collected into corresponding storage tanks, achieving effective separation and purification of different components, improving product purity, and recovering organic solvents to reduce production costs.
[0016] The inlet of this ultrasonic reactor is connected to a diatomaceous earth tank via a pipe. Diatomaceous earth has excellent adsorption and filtration properties. When mixed with raw materials in the ultrasonic reactor, it can adsorb impurities such as pigments and colloids in the raw materials. At the same time, it plays a filtration aid role in the subsequent filtration process, improving filtration efficiency and further enhancing the purity and quality of the product.
[0017] The liquid phase outlet of the ceramic membrane device is connected via a pipeline to a strongly acidic cation exchange resin column, and the outlet of the strongly acidic cation exchange resin column is connected via a pipeline to the distillation column. The strongly acidic cation exchange resin column can remove cationic impurities, such as Fe, from the solution. 2+ Fe 3+ These measures are taken to prevent these impurities from affecting the purity and quality of the product during subsequent distillation, further purifying the material and improving the purity of refined methylchloroisothiazolinone.
[0018] The outlet of the strongly acidic cation exchange resin column is connected to a regulating tank via a pipeline. The inlet of the regulating tank is connected to a disodium hydrogen phosphate solution tank via a pipeline. The outlet of the regulating tank is connected to the distillation column via a pipeline. By adding disodium hydrogen phosphate solution to the regulating tank, the pH value of the material can be adjusted to ensure that the material is within a suitable acid-base range, thus avoiding the impact of unsuitable pH value on subsequent distillation processes and product quality.
[0019] A circulation pump is installed on the outlet pipe of the regulating tank. The outlet of the circulation pump is connected to a static mixer via a pipe, and the outlet of the static mixer is connected to the inlet of the regulating tank via a pipe. The circulation pump and the static mixer form a circulation mixing system, which ensures that the material in the regulating tank is fully mixed with the disodium hydrogen phosphate solution during the circulation process, ensuring uniform and stable pH adjustment, avoiding excessive local pH differences, and improving the mixing effect and the accuracy of pH adjustment.
[0020] The regulating tank is equipped with an online pH sensor, and the outlet pipe of the disodium hydrogen phosphate solution tank is equipped with a shut-off valve. The online pH sensor and the shut-off valve are interlocked to the control system. The online pH sensor monitors the pH value of the material in the regulating tank in real time and feeds the data back to the control system. When the pH value reaches the set range, the control system automatically controls the shut-off valve to close, stopping the addition of disodium hydrogen phosphate solution. This achieves precise automatic control of the pH value, reduces manual intervention, and improves the stability of the production process and the consistency of product quality.
[0021] The outlet of the light component tank is connected to a phase separation tank via a pipeline. The outlet of the phase separation tank is connected to a wastewater tank and an organic phase tank via pipelines. The outlet of the organic phase tank is connected to a vacuum distillation column via a pipeline. The outlet of the vacuum distillation column is connected to a first solvent recovery tank via a pipeline. The phase separation tank separates the organic and aqueous phases in the light component. The organic phase is further purified by vacuum distillation column, and the organic solvent is recovered to the first solvent recovery tank, reducing the waste of organic solvent and lowering production costs. At the same time, the wastewater is separated and treated, reducing environmental pollution.
[0022] The outlet of the organic solvent tank is connected to a molecular sieve adsorption tower via a pipeline, and the outlet of the molecular sieve adsorption tower is connected to a second solvent recovery tank via a pipeline. The molecular sieve adsorption tower utilizes the adsorption properties of molecular sieves to further remove trace impurities and moisture from the organic solvent, improving its purity. The recovered high-purity organic solvent is stored in the second solvent recovery tank and can be reused in the production process, saving resources and reducing production costs. Attached Figure Description
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;
[0025] The components include: 1. Ultrasonic reactor; 2. Methylchloroisothiazolinone raw material tank; 3. Deionized water tank; 4. Screw pump; 5. Ceramic membrane device; 6. Distillation column; 7. Light component tank; 8. Organic solvent tank; 9. Refined methylchloroisothiazolinone tank; 10. Diatomaceous earth tank; 11. Strong acid cation exchange resin column; 12. Adjustment tank; 13. Disodium hydrogen phosphate solution tank; 14. Circulation pump; 15. Static mixer; 16. Online pH sensor; 17. Shut-off valve; 18. Phase separation tank; 19. Wastewater tank; 20. Organic phase tank; 21. Vacuum distillation column; 22. First solvent recovery tank; 23. Molecular sieve adsorption column; 24. Second solvent recovery. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0027] like Figure 1As shown, a pretreatment device for raw materials in the production of high-purity Kathon includes an ultrasonic reactor 1. The inlet of the ultrasonic reactor 1 is connected via pipes to a methylchloroisothiazolinone raw material tank 2 and a deionized water tank 3. The outlet of the ultrasonic reactor 1 is connected via a screw pump 4 to a ceramic membrane device 5. The liquid phase outlet of the ceramic membrane device 5 is connected via pipes to a distillation column 6. The top gas phase outlet of the distillation column 6 is connected via pipes to a light component tank 7, an organic solvent tank 8, and a purified methylchloroisothiazolinone tank 9. The methylchloroisothiazolinone raw material and deionized water are mixed in the ultrasonic reactor 1. Utilizing the cavitation and mechanical effects of ultrasound, the dissolution and dispersion of the raw material are accelerated, resulting in a more uniform mixture and improved reaction efficiency. This lays a good mixing foundation for the subsequent production of high-purity Kathon. The ceramic membrane device 5 has high-precision filtration and separation performance, effectively trapping large molecular impurities, suspended solids, and incompletely reacted particles in the reaction system, achieving solid-liquid separation, improving the purity of the material entering the distillation column 6, and ensuring the smooth progress of the subsequent distillation process and product quality. Distillation column 6 utilizes the boiling point differences of each component to distill and separate the liquid phase after ceramic membrane filtration. The light components, organic solvents, and refined methylchloroisothiazolinone are collected into corresponding storage tanks, achieving effective separation and purification of different components, improving product purity, and recovering organic solvents to reduce production costs.
[0028] The inlet of the ultrasonic reactor 1 is connected to a diatomaceous earth tank 10 via a pipe. Diatomaceous earth has good adsorption and filtration properties. When mixed with raw materials in the ultrasonic reactor 1, it can adsorb impurities such as pigments and colloids in the raw materials. At the same time, it plays a filtration aid role in the subsequent filtration process, improving filtration efficiency and further enhancing the purity and quality of the product.
[0029] The liquid phase outlet of the ceramic membrane device 5 is connected to a strongly acidic cation exchange resin column 11 via a pipeline, and the outlet of the strongly acidic cation exchange resin column 11 is connected to the distillation column 6 via a pipeline. The strongly acidic cation exchange resin column 11 can remove cationic impurities in the solution, such as Fe2+ and Fe3+, to prevent these impurities from affecting the purity and quality of the product in subsequent distillation processes, further purifying the material and improving the purity of refined methylchloroisothiazolinone.
[0030] The outlet of the strongly acidic cation exchange resin column 11 is connected to an adjusting tank 12 via a pipeline. The inlet of the adjusting tank 12 is connected to a disodium hydrogen phosphate solution tank 13 via a pipeline. The outlet of the adjusting tank 12 is connected to the distillation column 6 via a pipeline. By adding disodium hydrogen phosphate solution to the adjusting tank 12, the pH value of the material can be adjusted to keep it within a suitable acid-base range, thus avoiding the impact of unsuitable pH value on subsequent distillation processes and product quality.
[0031] A circulation pump 14 is installed on the outlet pipe of the regulating tank 12. The outlet of the circulation pump 14 is connected to a static mixer 15 via a pipe, and the outlet of the static mixer 15 is connected to the inlet of the regulating tank 12 via a pipe. The circulation pump 14 and the static mixer 15 form a circulation mixing system, which ensures that the material in the regulating tank 12 is fully mixed with the disodium hydrogen phosphate solution during the circulation process, ensuring uniform and stable pH adjustment, avoiding excessive local pH differences, and improving the mixing effect and accuracy of pH adjustment.
[0032] The regulating tank 12 is equipped with an online pH sensor 16, and the outlet pipe of the disodium hydrogen phosphate solution tank 13 is equipped with a shut-off valve 17. The online pH sensor 16 and the shut-off valve 17 are interlocked to the control system. The online pH sensor 16 monitors the pH value of the material in the regulating tank 12 in real time and feeds the data back to the control system. When the pH value reaches the set range, the control system automatically controls the shut-off valve 17 to close, stopping the addition of disodium hydrogen phosphate solution, thus achieving precise automatic control of the pH value, reducing manual intervention, and improving the stability of the production process and the consistency of product quality.
[0033] The outlet of the light component tank 7 is connected to a phase separation tank 18 via a pipeline. The outlet of the phase separation tank 18 is connected to a wastewater tank 19 and an organic phase tank 20 via pipelines. The outlet of the organic phase tank 20 is connected to a vacuum distillation column 21 via a pipeline. The outlet of the vacuum distillation column 21 is connected to a first solvent recovery tank 22 via a pipeline. The phase separation tank 18 separates the organic phase and the aqueous phase in the light component. The organic phase is further distilled and purified by the vacuum distillation column 21, and the organic solvent is recovered to the first solvent recovery tank 22, reducing the waste of organic solvent and lowering production costs. At the same time, the wastewater is separated and treated, reducing environmental pollution.
[0034] The outlet of the organic solvent tank 8 is connected to a molecular sieve adsorption tower 23 via a pipeline, and the outlet of the molecular sieve adsorption tower 23 is connected to a second solvent recovery tank 24 via a pipeline. The molecular sieve adsorption tower 23 utilizes the adsorption properties of molecular sieves to further remove trace impurities and moisture from the organic solvent, improving the purity of the organic solvent. The recovered high-purity organic solvent is stored in the second solvent recovery tank 24 and can be reused in the production process, saving resources and reducing production costs.
[0035] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.
Claims
1. A pretreatment device for raw materials in the production of high-purity Kathon, characterized in that: The device includes an ultrasonic reactor. The inlet of the ultrasonic reactor is connected to a methylchloroisothiazolinone raw material tank and a deionized water tank via pipelines. The outlet of the ultrasonic reactor is connected to a ceramic membrane device via a screw pump. The liquid phase outlet of the ceramic membrane device is connected to a distillation column via pipelines. The top gas phase outlet of the distillation column is connected to a light component tank, an organic solvent tank, and a purified methylchloroisothiazolinone tank via pipelines.
2. The pretreatment device for raw materials in the production of high-purity Kathon as described in claim 1, characterized in that: The inlet of the ultrasonic reactor is connected to a diatomaceous earth tank via a pipe.
3. The pretreatment device for raw materials in the production of high-purity Kathon as described in claim 1, characterized in that: The liquid phase outlet of the ceramic membrane device is connected to a column of strongly acidic cation exchange resin via a pipeline, and the outlet of the strongly acidic cation exchange resin column is connected to the distillation column via a pipeline.
4. The pretreatment device for raw materials in the production of high-purity Kathon as described in claim 3, characterized in that: The outlet of the strongly acidic cation exchange resin column is connected to a regulating tank via a pipeline, the inlet of the regulating tank is connected to a disodium hydrogen phosphate solution tank via a pipeline, and the outlet of the regulating tank is connected to the distillation column via a pipeline.
5. The pretreatment device for raw materials in the production of high-purity Kathon as described in claim 4, characterized in that: The outlet pipe of the regulating tank is equipped with a circulation pump, the outlet of the circulation pump is connected to a static mixer through a pipe, and the outlet of the static mixer is connected to the inlet of the regulating tank through a pipe.
6. The pretreatment device for raw materials in the production of high-purity Kathon as described in claim 4, characterized in that: The regulating tank is equipped with an online pH sensor, and the outlet pipe of the disodium hydrogen phosphate solution tank is equipped with a shut-off valve. The online pH sensor and the shut-off valve are interlocked to the control system.
7. The pretreatment device for raw materials in the production of high-purity Kathon as described in claim 1, characterized in that: The outlet of the light component tank is connected to a phase separation tank via a pipeline. The outlet of the phase separation tank is connected to a wastewater tank and an organic phase tank via pipelines. The outlet of the organic phase tank is connected to a vacuum distillation tower via a pipeline. The outlet of the vacuum distillation tower is connected to a first solvent recovery tank via a pipeline.
8. The pretreatment device for raw materials in the production of high-purity Kathon as described in claim 1, characterized in that: The outlet of the organic solvent tank is connected to a molecular sieve adsorption tower via a pipeline, and the outlet of the molecular sieve adsorption tower is connected to a second solvent recovery tank via a pipeline.