CN210419602U - Raw material recovery device for 1, 2-benzisothiazolin-3-ketone production wastewater - Google Patents
Raw material recovery device for 1, 2-benzisothiazolin-3-ketone production wastewater Download PDFInfo
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- CN210419602U CN210419602U CN201921009927.6U CN201921009927U CN210419602U CN 210419602 U CN210419602 U CN 210419602U CN 201921009927 U CN201921009927 U CN 201921009927U CN 210419602 U CN210419602 U CN 210419602U
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Abstract
The utility model provides a raw materials recovery unit of 1, 2-benzisothiazolin-3-one's waste water of production belongs to the waste water treatment field. The raw material recovery device for the production wastewater of the 1, 2-benzisothiazolin-3-one comprises a pH adjusting device, a primary sedimentation tank, a cooling crystallization reactor and a filter which are sequentially connected, wherein the pH adjusting device is used for adjusting the pH of the wastewater, the primary sedimentation tank is used for standing to generate sediment, the cooling crystallization reactor is used for cooling the wastewater to generate crystals in the wastewater, and the filter is used for filtering the wastewater after cooling and crystallizing. The utility model has the advantages of resource saving.
Description
Technical Field
The utility model belongs to the field of waste water treatment, in particular to a raw material recovery device for 1, 2-benzisothiazolin-3-one production waste water.
Background
The 1, 2-benzisothiazolin-3-one is abbreviated as BIT, and the 2-benzisothiazolin-3-one is an industrial sterilizing, corrosion-preventing and enzyme-preventing agent, can also be used as a synthetic material intermediate, a medicine intermediate and the like, has wide application in the chemical field, and can also bring huge economic benefits for enterprises when producing the 1, 2-benzisothiazolin-3-one.
In the synthesis process of BIT, the main production wastewater is the centrifugal mother liquor and the washing water of the BIT product. The centrifugal mother liquor and the washing water contain a lot of BIT products. If the treatment of the production wastewater is directly carried out, the BIT in the production wastewater is wasted, and the BIT as an organic compound brings certain influence on the subsequent treatment of the production wastewater.
Disclosure of Invention
The utility model aims at providing a raw materials recovery unit of waste water of 1, 2-benzisothiazolin-3-one to the above-mentioned problem that exists among the prior art.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides a raw materials recovery unit of 1, 2-benzisothiazolin-3-one's waste water of producing, its characterized in that, including pH adjusting device, one-level sedimentation tank, cooling crystallization reactor, the filter that connects gradually, pH adjusting device be used for adjusting the pH of waste water, one-level sedimentation tank be used for stewing and produce the sediment, cooling crystallization reactor be used for cooling waste water, generate the crystallization in the messenger waste water, the filter be used for filtering the waste water after the cooling crystallization.
The utility model discloses a theory of operation: during the acidification of the BIT product, a large amount of acidic impurities can be produced by deep acidification, therefore, the pH value of the production wastewater is adjusted by a pH adjusting device, the pH value of the wastewater is approximately equal to 1, then the wastewater enters a primary sedimentation tank for sedimentation to generate a large amount of acidic impurities, the large amount of acidic impurities generated by sedimentation are discharged through the primary sedimentation tank, the precipitated wastewater enters a cooling crystallization reactor, the temperature of the BIT product is high during centrifugation, the BIT product can be crystallized after being naturally cooled to 25 ℃ of room temperature during cooling crystallization, the solubility of the BIT product in a normal-temperature (25 ℃) water phase is about 0.141% (liquid phase detection), the solubility of the BIT product in the water phase is 1.5% at 90 ℃, and the temperature has a great influence on the solubility of the BIT product in the water phase between 45. So cooling crystallization reactor produces the crystallization through natural cooling, the crystallization of production sinks in the bottom of cooling crystallization reactor, collects the sediment of cooling crystallization reactor bottom, then solution after the cooling crystallization gets into the filter in filters, waste water after the filtration can carry out waste water treatment, contains a large amount of product BIT in the sediment that the filtration obtained and the cooling crystallization generated, can retrieve and recycle, the utility model discloses an adjust pH and get rid of acid impurity, the waste water after the cooling crystallization generation sediment and the filtration crystallization all contains a large amount of BIT in obtaining the sediment, can retrieve and recycle, both practiced thrift the resource, brought the profit again for the enterprise, subsequent waste water treatment can be carried out to waste water after the filtration, and this waste water that carries out waste water treatment has already removed some organic matters, is favorable to subsequent waste water's processing.
In the raw material recovery device for the production wastewater of the 1, 2-benzisothiazolin-3-one, the pH adjusting device comprises an acid liquid tank and an adjusting tank, an acid liquid flow adjusting valve is arranged between the acid liquid tank and the adjusting tank and used for controlling the flow of the acid liquid stored in the acid liquid tank into the adjusting tank, a wastewater flow adjusting valve is arranged at a water inlet of the adjusting tank and used for controlling the flow of the wastewater into the adjusting tank.
In the raw material recovery device for the production wastewater of the 1, 2-benzisothiazolin-3-one, the adjusting tank is provided with a stirring device and a pH value online monitoring device, the stirring device is used for stirring the wastewater and the acid liquor, and the pH value online monitoring device is used for monitoring the pH value of the wastewater in the adjusting tank on line.
In the aforementioned raw material recovery device for wastewater from 1, 2-benzisothiazolin-3-one production, the bottom in the one-level sedimentation tank is a big-end-up inverted cone, the bottom of the one-level sedimentation tank is provided with an impurity discharging pipeline and an impurity collecting device, the impurity collecting device is used for collecting acidic impurities, and the impurity discharging pipeline is provided with a first valve.
In the above raw material recovery device for the production wastewater of 1, 2-benzisothiazolin-3-one, the bottom of the cooling crystallization reactor is in a shape of an inverted cone with a large top and a small bottom, a precipitation collecting device is arranged at the bottom of the cooling crystallization reactor, the precipitation collecting device and the cooling crystallization reactor are connected through a pipeline, and a second valve is arranged on the pipeline.
In the raw material recovery device for the production wastewater of the 1, 2-benzisothiazolin-3-one, the outer side wall of the cooling crystallization reactor is provided with the radiating fins, and the radiating fins are used for accelerating the radiation of the wastewater.
In the raw material recovery device for the production wastewater of the 1, 2-benzisothiazolin-3-one, a buffer pool is arranged between the cooling crystallization reactor and the filter.
In the aforementioned raw material recovery device for production wastewater of 1, 2-benzisothiazolin-3-one, a flocculation crystallization reactor is arranged between the cooling crystallization reactor and the buffer pool, the flocculation crystallization reactor is provided with a flocculating agent adding port, a flocculating agent is added from the flocculating agent adding port, and the flocculation crystallization reactor is used for flocculation reaction and flocculation precipitation.
In the raw material recovery device for the production wastewater of the 1, 2-benzisothiazolin-3-one, a water outlet of the filter is provided with a micro-porous filtering membrane.
In the raw material recovery device for the production wastewater of the 1, 2-benzisothiazolin-3-one, lifting pumps are arranged between the pH adjusting device and the primary sedimentation tank, between the primary sedimentation tank and the cooling crystallization reactor, between the cooling crystallization reactor and the flocculation crystallization reactor, and between the buffer tank and the filter.
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model discloses an adjust pH and get rid of acidic impurity, the cooling crystallization generates and deposits and all contains a large amount of BIT in obtaining the sediment with the waste water after filtering the crystallization, can retrieve and recycle, has both practiced thrift the resource, has brought the profit for the enterprise again, and the waste water after the filtration can carry out subsequent waste water treatment, and should carry out waste water treatment's waste water and has removed some organic matters, is favorable to subsequent waste water's processing.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a pH adjusting device; 2. a first-stage sedimentation tank; 3. cooling the crystallization reactor; 4. a filter; 5. an acid liquor tank; 6. a conditioning tank; 7. an acid liquor flow regulating valve; 8. a waste water flow regulating valve; 9. a stirring device; 10. a pH value on-line monitoring device; 11. a trash removal pipeline; 12. an impurity collecting device; 13. a first valve; 14. a sediment collection device; 15. a pipeline; 16. a second valve; 17. a heat sink; 18. a buffer pool; 19. a flocculation crystallization reactor; 20. adding a flocculating agent port; 21. a microporous filtration membrane; 22. a lift pump.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in figure 1, the raw material recovery device for the production wastewater of the 1, 2-benzisothiazolin-3-one comprises a pH adjusting device 1, a primary sedimentation tank 2, a cooling crystallization reactor 3 and a filter 4 which are sequentially connected, wherein the pH adjusting device 1 is used for adjusting the pH of the wastewater, the primary sedimentation tank 2 is used for standing to generate sediment, the cooling crystallization reactor 3 is used for cooling the wastewater to generate crystals in the wastewater, and the filter 4 is used for filtering the wastewater after cooling and crystallization.
In further detail, the pH adjusting device 1 comprises an acid solution tank 5 and an adjusting tank 6, an acid solution flow adjusting valve 7 is arranged between the acid solution tank 5 and the adjusting tank 6, the acid solution flow adjusting valve 7 is used for controlling the flow of acid solution stored in the acid solution tank 5 into the adjusting tank 6, a wastewater flow adjusting valve 8 is arranged at a water inlet of the adjusting tank 6, and the wastewater flow adjusting valve 8 is used for controlling the flow of wastewater into the adjusting tank 6. The adjusting tank 6 is provided with a stirring device 9 and an online pH value monitoring device 10, wherein the stirring device 9 is used for stirring the wastewater and the acid liquor, and the online pH value monitoring device 10 is used for monitoring the pH value of the wastewater in the adjusting tank 6 on line.
Waste water gets into in the regulating reservoir 6 from the water inlet of regulating reservoir 6, acid liquor tank 5 drops acidizing fluid in toward regulating reservoir 6, flow in waste water gets into regulating reservoir 6 is controlled through waste water flow control valve 8, flow in acidizing fluid entering regulating reservoir 6 in the acidizing fluid tank 5 is controlled through acidizing fluid flow control valve 7, thereby guarantee that the pH value of waste water equals 1, and the pH of available pH value on-line monitoring device 10 real time monitoring waste water, if do not reach required value, can in time adjust waste water or the flow that the acidizing fluid got into in the regulating reservoir 6 reaches the purpose of adjustment waste water pH. The stirring device 9 stirs the wastewater to fully mix the wastewater and the acid liquor.
In further detail, the bottom in the primary sedimentation tank 2 is in a shape of an inverted cone with a large top and a small bottom, the bottom of the primary sedimentation tank 2 is provided with an impurity discharge pipeline 11 and an impurity collecting device 12, the impurity collecting device 12 is used for collecting acidic impurities, and the impurity discharge pipeline 11 is provided with a first valve 13. Acid impurities generated after the pH value is adjusted are precipitated at the bottom of the primary sedimentation tank 2, precipitated wastewater is discharged into the cooling crystallization reactor 3 from a water outlet of the primary sedimentation tank 2, the first valve 13 is opened, and the acid impurities are discharged into the impurity collecting device 12 from the impurity discharging pipeline 11. The bottom of the first-level sedimentation tank 2 is in a shape of an inverted cone with a large upper part and a small lower part, which is beneficial to sedimentation and sedimentation at the bottom.
In a further detail, the bottom of the cooling crystallization reactor 3 is in an inverted cone shape with a large top and a small bottom, the bottom of the cooling crystallization reactor 3 is provided with a precipitation collecting device 14, the precipitation collecting device 14 is connected with the cooling crystallization reactor 3 through a pipeline 15, and the pipeline 15 is provided with a second valve 16. The outer side wall of the cooling crystallization reactor 3 is provided with a radiating fin 17, and the radiating fin 17 is used for accelerating the radiation of the waste water. The wastewater is kept still in the cooling crystallization reactor 3 for cooling crystallization, the standing cooling crystallization is more than 48 hours, the outer side wall of the cooling crystallization reactor 3 is provided with a radiating fin 17, and the radiating fin 17 is used for accelerating the radiating speed of the wastewater in the cooling crystallization reactor 3. The liquid after crystallization is discharged from the water outlet of the cooling crystallization reactor 3, the second valve 16 is opened, the precipitate generated by crystallization is discharged into the precipitate collecting device 14 from the pipeline 15, and the bottom of the cooling crystallization reactor 3 is in an inverted cone shape with a large top and a small bottom, which is beneficial to the precipitate to be precipitated at the bottom. The precipitate in the precipitate collecting device 14 contains BIT and can be reused.
In more detail, a buffer tank 18 is provided between the cooling crystallization reactor 3 and the filter 4. A flocculation crystallization reactor 19 is arranged between the cooling crystallization reactor 3 and the buffer tank 18, the flocculation crystallization reactor 19 is provided with a flocculant adding port 20, a flocculant is added from the flocculant adding port 20, and the flocculation crystallization reactor 19 is used for generating flocculation reaction and generating flocculation precipitation. The outlet of the filter 4 is provided with a micro-porous filtering membrane 21. The wastewater after cooling crystallization enters a flocculation crystallization reactor 19 for flocculation crystallization reaction, wherein a flocculating agent is added from a flocculating agent adding port 20, the flocculating agent is various and can be polyaluminium chloride, and the wastewater is subjected to flocculation precipitation. Then enters a buffer tank 18 and finally enters a filter 4 for filtration, and a microporous filtering membrane 21 is arranged at the water outlet of the filter 4 and can filter flocculent precipitates. The flocculent precipitate after filtration can be reused. The filtered flocculent precipitate also contains BIT and can be reused.
In further detail, a lift pump 22 is arranged between the pH adjusting device 1 and the primary sedimentation tank 2, between the primary sedimentation tank 2 and the cooling crystallization reactor 3, between the cooling crystallization reactor 3 and the flocculation crystallization reactor 19, and between the buffer tank 18 and the filter 4.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms of the pH adjusting device 1, the primary sedimentation tank 2, the cooling crystallization reactor 3, the filter 4, the acid liquid tank 5, the adjusting tank 6, the acid liquid flow adjusting valve 7, the waste water flow adjusting valve 8, the stirring device 9, the pH value on-line monitoring device 10, the impurity discharging pipeline 11, the impurity collecting device 12, the first valve 13, the sedimentation collecting device 14, the pipeline 15, the second valve 16, the heat radiating fin 17, the buffer tank 18, the flocculation crystallization reactor 19, the flocculating agent adding port 20, the micro-porous filtering membrane 21 and the like are used more extensively herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. The utility model provides a raw materials recovery unit of 1, 2-benzisothiazolin-3-one's waste water of production, its characterized in that, including pH adjusting device (1), one-level sedimentation tank (2), cooling crystallization reactor (3), filter (4) that connect gradually, pH adjusting device (1) be used for adjusting the pH of waste water, one-level sedimentation tank (2) be used for stewing and produce the sediment, cooling crystallization reactor (3) be used for cooling waste water, produce the crystallization in the messenger waste water, filter (4) be used for filtering the waste water after the cooling crystallization.
2. The raw material recovery device for the production wastewater of 1, 2-benzisothiazolin-3-one according to claim 1, characterized in that the pH adjusting device (1) comprises an acid solution tank (5) and an adjusting tank (6), an acid solution flow adjusting valve (7) is arranged between the acid solution tank (5) and the adjusting tank (6), the acid solution flow adjusting valve (7) is used for controlling the flow of the acid solution stored in the acid solution tank (5) into the adjusting tank (6), a wastewater flow adjusting valve (8) is arranged at the water inlet of the adjusting tank (6), and the wastewater flow adjusting valve (8) is used for controlling the flow of the wastewater into the adjusting tank (6).
3. The apparatus for recycling raw material of industrial wastewater of 1, 2-benzisothiazolin-3-one according to claim 1, characterized in that the adjusting tank (6) is provided with a stirring device (9) and an online pH monitoring device (10), wherein the stirring device (9) is used for stirring the wastewater and the acid solution, and the online pH monitoring device (10) is used for online monitoring the pH of the wastewater in the adjusting tank (6).
4. The raw material recovery device for the production wastewater of 1, 2-benzisothiazolin-3-one according to claim 1, characterized in that the bottom of the primary sedimentation tank (2) is in the shape of an inverted cone with a large top and a small bottom, the bottom of the primary sedimentation tank (2) is provided with an impurity discharge pipeline (11) and an impurity collection device (12), the impurity collection device (12) is used for collecting acidic impurities, and the impurity discharge pipeline (11) is provided with a first valve (13).
5. The raw material recovery device for the production wastewater of 1, 2-benzisothiazolin-3-one according to claim 1, characterized in that the bottom of the cooling crystallization reactor (3) is in the shape of an inverted cone with a large top and a small bottom, the bottom of the cooling crystallization reactor (3) is provided with a sediment collecting device (14), the sediment collecting device (14) and the cooling crystallization reactor (3) are connected through a pipeline (15), and the pipeline (15) is provided with a second valve (16).
6. The raw material recovery device for the production wastewater of 1, 2-benzisothiazolin-3-one according to claim 1, characterized in that the outer side wall of the cooling crystallization reactor (3) is provided with a heat sink (17), and the heat sink (17) is used for accelerating the heat dissipation of the wastewater.
7. The apparatus for recovering a starting material for waste water from the production of 1, 2-benzisothiazolin-3-one according to claim 1, characterized in that a buffer tank (18) is provided between the cooling crystallization reactor (3) and the filter (4).
8. The apparatus for recycling raw material of industrial waste water of 1, 2-benzisothiazolin-3-one according to claim 7, characterized in that a flocculation crystallization reactor (19) is disposed between the cooling crystallization reactor (3) and the buffer tank (18), the flocculation crystallization reactor (19) is provided with a flocculant adding port (20), a flocculant is added from the flocculant adding port (20), and the flocculation crystallization reactor (19) is used for flocculation reaction and flocculation precipitation.
9. The raw material recovery device for the production wastewater of 1, 2-benzisothiazolin-3-one according to claim 1, characterized in that a micro-porous filtering membrane (21) is arranged at the water outlet of the filter (4).
10. The raw material recovery device for the production wastewater of 1, 2-benzisothiazolin-3-one according to claim 8, characterized in that a lift pump (22) is arranged between the pH adjusting device (1) and the primary sedimentation tank (2), between the primary sedimentation tank (2) and the cooling crystallization reactor (3), between the cooling crystallization reactor (3) and the flocculation crystallization reactor (19), between the buffer tank (18) and the filter (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921009927.6U CN210419602U (en) | 2019-07-01 | 2019-07-01 | Raw material recovery device for 1, 2-benzisothiazolin-3-ketone production wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921009927.6U CN210419602U (en) | 2019-07-01 | 2019-07-01 | Raw material recovery device for 1, 2-benzisothiazolin-3-ketone production wastewater |
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| Publication Number | Publication Date |
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| CN210419602U true CN210419602U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921009927.6U Expired - Fee Related CN210419602U (en) | 2019-07-01 | 2019-07-01 | Raw material recovery device for 1, 2-benzisothiazolin-3-ketone production wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113716535A (en) * | 2021-09-07 | 2021-11-30 | 福泉兴盛生物科技有限公司 | Method and device for recycling hydrazine hydrate in 3-chloro-2-hydrazinopyridine intermediate preparation process |
-
2019
- 2019-07-01 CN CN201921009927.6U patent/CN210419602U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113716535A (en) * | 2021-09-07 | 2021-11-30 | 福泉兴盛生物科技有限公司 | Method and device for recycling hydrazine hydrate in 3-chloro-2-hydrazinopyridine intermediate preparation process |
| CN113716535B (en) * | 2021-09-07 | 2023-03-10 | 天长高能环保科技有限责任公司 | Method and device for recycling hydrazine hydrate in 3-chloro-2-hydrazinopyridine intermediate preparation process |
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Granted publication date: 20200428 Termination date: 20210701 |