CN210506154U - Mixed binary acid pretreatment device - Google Patents
Mixed binary acid pretreatment device Download PDFInfo
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- CN210506154U CN210506154U CN201921540756.XU CN201921540756U CN210506154U CN 210506154 U CN210506154 U CN 210506154U CN 201921540756 U CN201921540756 U CN 201921540756U CN 210506154 U CN210506154 U CN 210506154U
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- crystallizer
- centrifuge
- dibasic acid
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- chilled water
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Abstract
The utility model provides a mixed dibasic acid pretreatment device, which comprises a dissolving crystallizer, a first crystallizer, a second crystallizer, a centrifuge, a residual liquid tank and a solution pump; a steam jacket is sleeved outside the dissolution crystallizer, and chilled water jackets are sleeved outside the first crystallizer and the second crystallizer; the top parts of the first crystallizer and the centrifuge are respectively provided with two feed inlets, and the feed inlets of the first crystallizer are respectively communicated with a discharge valve of the dissolution crystallizer and a discharge hole of the centrifuge; the discharge hole of the centrifuge is communicated with the feed inlet of the second crystallizer through a pipeline; two feed inlets of the centrifuge are respectively communicated with the discharge valves of the first crystallizer and the second crystallizer; and a filter bag is arranged in the centrifuge. The device makes mixed dibasic acid can be crystallized more thoroughly, experimental data is closer to actual production, and practical guidance can be provided for industrial production projects.
Description
Technical Field
The utility model belongs to chemical industry pilot scale equipment field, specific theory has related to a mix binary acid pretreatment device.
Background
The long-chain mixed dibasic acid is aliphatic dibasic acid (DCn for short) with a carbon chain containing 9 or more carbon atoms, comprises saturated and unsaturated dibasic acids, is a fine chemical product with important and wide industrial application, and is an important raw material for synthesizing high-grade spices, high-performance engineering plastics, high-temperature dielectrics, high-grade hot melt adhesives, cold-resistant plasticizers, high-grade lubricating oil, high-grade paints, coatings and the like in the chemical industry.
The long-chain mixed dibasic acid does not exist in nature, and certain kinds of long-chain dibasic acid can be synthesized by chemical synthesis. For example, castor oil is hydrolyzed under heating in the presence of alkali to produce ricinoleic acid sodium soap, which is then acidified with sulfuric acid to produce ricinoleic acid, and the mixture is then heated and cracked with alkali in the presence of diluent to obtain disodium sebacate, which is then acidified to obtain the finished product of sebacic acid. For example, cyclododecatriene can be obtained by trimerizing butadiene, dodecane can be obtained by hydrogenation, and dodecane can be oxidized with nitric acid to obtain dodecane diacid. However, the chemical synthesis method for producing the long-chain dibasic acid has the defects of technical and equipment requirements, high energy consumption and the like, wherein the crystallization process directly influences the particle size of the long-chain dibasic acid crystal so as to influence the purity of the long-chain dibasic acid. If the particles are too small, the specific surface area of the particles is large, impurities can be adsorbed, and the application of the long-chain dicarboxylic acid is influenced, particularly the application in the polymerization field. The crystallization process in the prior art is generally direct linear or natural cooling to the target temperature, and the methods have the defects of low production efficiency, high production cost, unstable product quality and the like. Meanwhile, the adjustment of the technological parameters of the mixed dibasic acid pretreatment is generally obtained through experiments, and the existing mixed dibasic acid pretreatment device has the problems of poor universality, complex structure and the like, so that the accuracy of data is influenced.
In order to solve the above problems, people are always seeking an ideal technical solution.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mix dibasic acid pretreatment device to the not enough of prior art.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a mixed dibasic acid pretreatment device comprises a dissolving crystallizer, a first crystallizer, a second crystallizer, a centrifugal machine, a residual liquid tank and a solution pump;
a steam jacket is sleeved outside the dissolution crystallizer, and chilled water jackets are sleeved outside the first crystallizer and the second crystallizer;
a purified water inlet and a mixed dibasic acid raw material inlet are formed in the dissolving crystallizer; the top of the first crystallizer and the top of the second crystallizer are both provided with a purified water inlet and a vacuum pump interface;
the top of the first crystallizer and the top of the centrifuge are both provided with two feed inlets, and one feed inlet of the first crystallizer is communicated with a discharge valve of the dissolution crystallizer; the other path of feed inlet of the first crystallizer is communicated with the discharge outlet of the centrifugal machine;
the discharge hole of the centrifuge is also communicated with the feed hole of the second crystallizer through a pipeline; two feed inlets of the centrifuge are respectively communicated with a discharge valve of the first crystallizer and a discharge valve of the second crystallizer;
the discharge hole of the centrifuge is also communicated with the residual liquid tank and the solution pump through pipelines; and a filter bag is arranged in the centrifuge.
Based on the above, the chilled water jacket is provided with a chilled water inlet and a chilled water outlet.
Based on the above, the steam jacket is provided with a steam inlet and a steam outlet.
Specifically, the specific process flow of the mixed dibasic acid pretreatment device is as follows:
firstly, adding metered ultrapure water and a flaked solid material into a dissolving crystallizer R0101, heating the material to about 80 ℃ through jacket steam to dissolve the material, pumping the material liquid dissolved in the dissolving crystallizer R0101 into a first crystallizer J0101 through a vacuum system, cooling and crystallizing the first crystallizer through jacket chilled water, controlling the flow of a jacket chilled water inlet regulating valve by taking the temperature of liquid in a kettle as a control point, and when the temperature is high, the flow is larger, and when the temperature is close to 25 ℃, the flow is the minimum.
After the temperature of liquid in the first crystallizer J0101 is maintained at 25 ℃ for about 6 hours, starting an L0101 centrifugal machine, opening a discharge valve at the bottom of the first crystallizer J0101 to discharge materials into the centrifugal machine, simultaneously opening a vacuum valve on a J0102 kettle of a second crystallizer to pump filtrate into the J0102 kettle of the second crystallizer, discharging a filter bag after the centrifugal machine dries the materials, and pouring first filter residue into a drying tray to be dried; the second crystallizer is cooled and crystallized by jacket chilled water, the flow of a jacket chilled water inlet regulating valve is controlled by taking the temperature of liquid in the kettle as a control point, when the temperature is high, the flow is large, when the temperature is close to 15 ℃, the flow is minimum, the temperature of the liquid in the second crystallizer is maintained at 15 ℃ for about 4-6 hours, an L0101 centrifuge with new filter cloth is started, a discharge valve at the bottom of the second crystallizer is opened to discharge the liquid to the centrifuge, a vacuum valve on the J0101 is opened simultaneously to suck filtrate into the kettle of the first crystallizer, and the centrifuge is stopped after the centrifuge spins the material.
The first crystallizer cools down the cooling crystallization through the jacket refrigerated water, jacket refrigerated water inlet governing valve flow control uses the interior liquid temperature of cauldron as the control point, when the temperature is high, the flow is great, the flow is minimum when the temperature is close to 10 ℃, after the interior liquid temperature of first crystallizer cauldron maintains 10 ℃ about 2 hours, open L0101 centrifuge, open the blowing valve at the bottom of first crystallizer and to the centrifuge blowing, open vacuum valve on the residual fluid jar CG0101 simultaneously, make the filtrating suction in CG0101 jar, treat that centrifuge spin-dries the material after, unload the filter bag, pour the second and third filter residue into the drying pan and take off the drying.
The utility model discloses relative prior art has substantive characteristics and progress, specific theory, the utility model provides a mixed dibasic acid pretreatment of compact device passes through first crystallizer and the many times cross crystallization of second crystallizer for mixed dibasic acid can be more thorough of crystallization, has created the condition for subsequent purification. Meanwhile, the mixed dibasic acid pretreatment device can maximally simulate the process flow in actual production, experimental data is closer to actual production, and actual guidance can be provided for industrial production projects.
Drawings
Fig. 1 is the schematic flow diagram of the mixed dibasic acid pretreatment device provided by the utility model.
Fig. 2 is the utility model provides a mixed dibasic acid pretreatment of water device actual test connects the sketch map.
In the figure: 1. a dissolving crystallizer; 2. a first crystallizer; 3. a second crystallizer; 4. a centrifuge; 5. a residue tank; 6. and a solution pump.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
Example 1
The embodiment provides a mixed dibasic acid pretreatment device, as shown in fig. 1 and 2, which comprises a dissolving crystallizer 1, a first crystallizer 2, a second crystallizer 3, a centrifuge 4, a residue tank 5 and a solution pump 6.
And a steam jacket is sleeved outside the dissolution crystallizer 1, and chilled water jackets are respectively sleeved outside the first crystallizer and the second crystallizer.
A purified water inlet and a mixed dibasic acid raw material inlet are formed in the dissolving crystallizer 1; and the top of the first crystallizer 2 and the top of the second crystallizer 3 are both provided with a purified water inlet and a vacuum pump interface.
The top of the first crystallizer 2 and the top of the centrifuge 4 are both provided with two feed inlets, and one feed inlet of the first crystallizer 2 is communicated with a discharge valve of the dissolution crystallizer 1; and the other path of feed inlet of the first crystallizer 2 is communicated with the discharge outlet of the centrifugal machine 4.
The discharge hole of the centrifuge 4 is also communicated with the feed inlet of the second crystallizer 3 through a pipeline; and two feed inlets of the centrifugal machine 4 are respectively communicated with a discharge valve of the first crystallizer 2 and a discharge valve of the second crystallizer 3.
The discharge hole of the centrifuge 4 is also communicated with the residual liquid tank 4 and the solution pump 6 through pipelines; and a filter bag is arranged in the centrifuge.
Wherein, the chilled water jacket is provided with a chilled water inlet and a chilled water outlet. And the steam jacket is provided with a steam inlet and a steam outlet.
Specifically, the specific process flow of the mixed dibasic acid pretreatment device is as follows:
firstly, adding metered ultrapure water and a flaked solid material into a dissolving crystallizer R0101, heating the material to about 80 ℃ through jacket steam to dissolve the material, pumping the material liquid dissolved in the dissolving crystallizer R0101 into a first crystallizer J0101 through a vacuum system, cooling and crystallizing the first crystallizer through jacket chilled water, controlling the flow of a jacket chilled water inlet regulating valve by taking the temperature of liquid in a kettle as a control point, and when the temperature is high, the flow is larger, and when the temperature is close to 25 ℃, the flow is the minimum.
After the temperature of liquid in the first crystallizer J0101 is maintained at 25 ℃ for about 6 hours, starting an L0101 centrifugal machine, opening a discharge valve at the bottom of the first crystallizer J0101 to discharge materials into the centrifugal machine, simultaneously opening a vacuum valve on a J0102 kettle of a second crystallizer to pump filtrate into the J0102 kettle of the second crystallizer, discharging a filter bag after the centrifugal machine dries the materials, and pouring first filter residue into a drying tray to be dried; the second crystallizer is cooled and crystallized by jacket chilled water, the flow of a jacket chilled water inlet regulating valve is controlled by taking the temperature of liquid in the kettle as a control point, when the temperature is high, the flow is large, when the temperature is close to 15 ℃, the flow is minimum, the temperature of the liquid in the second crystallizer is maintained at 15 ℃ for about 4-6 hours, an L0101 centrifuge with new filter cloth is started, a discharge valve at the bottom of the second crystallizer is opened to discharge the liquid to the centrifuge, a vacuum valve on the J0101 is opened simultaneously to suck filtrate into the kettle of the first crystallizer, and the centrifuge is stopped after the centrifuge spins the material.
The first crystallizer cools down the cooling crystallization through the jacket refrigerated water, jacket refrigerated water inlet governing valve flow control uses the interior liquid temperature of cauldron as the control point, when the temperature is high, the flow is great, the flow is minimum when the temperature is close to 10 ℃, after the interior liquid temperature of first crystallizer cauldron maintains 10 ℃ about 2 hours, open L0101 centrifuge, open the blowing valve at the bottom of first crystallizer and to the centrifuge blowing, open vacuum valve on the residual fluid jar CG0101 simultaneously, make the filtrating suction in CG0101 jar, treat that centrifuge spin-dries the material after, unload the filter bag, pour the second and third filter residue into the drying pan and take off the drying.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (3)
1. A mixed dibasic acid pretreatment device is characterized by comprising a dissolving crystallizer, a first crystallizer, a second crystallizer, a centrifugal machine, a residual liquid tank and a solution pump;
a steam jacket is sleeved outside the dissolution crystallizer, and chilled water jackets are sleeved outside the first crystallizer and the second crystallizer;
a purified water inlet and a mixed dibasic acid raw material inlet are formed in the dissolving crystallizer; the top of the first crystallizer and the top of the second crystallizer are both provided with a purified water inlet and a vacuum pump interface;
the top of the first crystallizer and the top of the centrifuge are both provided with two feed inlets, and one feed inlet of the first crystallizer is communicated with a discharge valve of the dissolution crystallizer; the other path of feed inlet of the first crystallizer is communicated with the discharge outlet of the centrifugal machine;
the discharge hole of the centrifuge is also communicated with the feed hole of the second crystallizer through a pipeline; two feed inlets of the centrifuge are respectively communicated with a discharge valve of the first crystallizer and a discharge valve of the second crystallizer;
the discharge hole of the centrifuge is also communicated with the residual liquid tank and the solution pump through pipelines; and a filter bag is arranged in the centrifuge.
2. The mixed dibasic acid pretreatment device according to claim 1, wherein the chilled water jacket is provided with a chilled water inlet and a chilled water outlet.
3. The mixed dibasic acid pretreatment apparatus of claim 2, wherein the steam jacket is provided with a steam inlet and a steam outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921540756.XU CN210506154U (en) | 2019-09-17 | 2019-09-17 | Mixed binary acid pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921540756.XU CN210506154U (en) | 2019-09-17 | 2019-09-17 | Mixed binary acid pretreatment device |
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| CN210506154U true CN210506154U (en) | 2020-05-12 |
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| CN201921540756.XU Expired - Fee Related CN210506154U (en) | 2019-09-17 | 2019-09-17 | Mixed binary acid pretreatment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112755573A (en) * | 2020-12-17 | 2021-05-07 | 重庆华峰化工有限公司 | Cooling crystallization device and purification method for C4-C6 mixed binary acid solution |
| CN114917850A (en) * | 2022-06-13 | 2022-08-19 | 宁夏恒力生物新材料有限责任公司 | Device and method for purifying aqueous phase of long-carbon-chain dibasic acid fermentation liquor |
-
2019
- 2019-09-17 CN CN201921540756.XU patent/CN210506154U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112755573A (en) * | 2020-12-17 | 2021-05-07 | 重庆华峰化工有限公司 | Cooling crystallization device and purification method for C4-C6 mixed binary acid solution |
| CN114917850A (en) * | 2022-06-13 | 2022-08-19 | 宁夏恒力生物新材料有限责任公司 | Device and method for purifying aqueous phase of long-carbon-chain dibasic acid fermentation liquor |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 Termination date: 20210917 |