CN218618251U - Storage filtration equipment of used catalyst hydrochloric acid of production PVB - Google Patents
Storage filtration equipment of used catalyst hydrochloric acid of production PVB Download PDFInfo
- Publication number
- CN218618251U CN218618251U CN202222457360.7U CN202222457360U CN218618251U CN 218618251 U CN218618251 U CN 218618251U CN 202222457360 U CN202222457360 U CN 202222457360U CN 218618251 U CN218618251 U CN 218618251U
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- Prior art keywords
- hydrochloric acid
- storage tank
- cooling water
- acid storage
- water cavity
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 250
- 238000003860 storage Methods 0.000 title claims abstract description 72
- 238000001914 filtration Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000003054 catalyst Substances 0.000 title claims abstract description 12
- 239000000498 cooling water Substances 0.000 claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 239000002274 desiccant Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000009833 condensation Methods 0.000 abstract description 9
- 230000005494 condensation Effects 0.000 abstract description 9
- 239000012535 impurity Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 239000003595 mist Substances 0.000 description 6
- 238000004821 distillation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 238000006359 acetalization reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model provides a storage filtration equipment of used catalyst hydrochloric acid of production PVB, including condensing equipment and hydrochloric acid storage tank, condensing equipment includes cooling water cavity and spiral condenser pipe, set up water inlet and delivery port on the cooling water cavity, the cooling water cavity is installed the top of hydrochloric acid storage tank, the spiral condenser pipe is arranged in the cooling water cavity, stretch out the upper end of spiral condenser pipe the top surface of cooling water cavity, the lower extreme of spiral condenser pipe with the top intercommunication of hydrochloric acid storage tank, its characteristics are: and a drying device is arranged at the upper end of the spiral condensing pipe, and the bottom of the hydrochloric acid storage tank is communicated with a hydrochloric acid filtering device. Can avoid because the hydrochloric acid fog discharges pollution and harm that arouses in the atmosphere, avoid hydrochloric acid to volatilize the concentration that influences the hydrochloric acid in the storage tank, avoid the air impurity and the vapor that hydrochloric acid introduced in the condensation process, solve the purity problem that hydrochloric acid directly drops into the plant use from the storage tank simultaneously.
Description
Technical Field
The utility model belongs to the technical field of chemical production equipment, a storage filtration equipment of the used catalyst hydrochloric acid of production PVB specifically says so.
Background
In the industrial production process of PVB, butyraldehyde and polyvinyl alcohol are subjected to an acetalization reaction under the action of catalyst hydrochloric acid. In general, polyvinyl alcohol is dissolved in a solvent, butyraldehyde and hydrochloric acid with certain purity and specific concentration are added at a certain temperature, and an acetalization reaction for producing PVB is completed under the catalysis of the hydrochloric acid under the stirring state.
In the commercial production of PVB, large quantities of raw materials and acids are stocked to ensure that the PVB is continuously fed into the production line during production. However, butyraldehyde and hydrochloric acid need to be purified by distillation through special equipment before use, which also prolongs the production period and causes energy consumption, and the special distillation equipment also needs to occupy extra volume, has complex pipelines and increases the production and maintenance cost. Therefore, there is a need for a hydrochloric acid storage and filtration apparatus with simple structure, low cost and easy maintenance, so as to realize the storage and purification of hydrochloric acid.
Typically, the plant stores the newly transported hydrochloric acid in a dedicated hydrochloric acid storage tank and then leads to the production line. The hydrochloric acid storage tank is communicated with the atmosphere to ensure the smooth output of the hydrochloric acid, and the interior of the storage tank is in a normal pressure state. However, the concentration of hydrochloric acid newly produced in a newly transported factory is generally about 31%, and the temperature thereof is often higher than the atmospheric temperature. Volatility is the characteristic of hydrochloric acid itself, and the larger the difference between the temperature of hydrochloric acid and the atmospheric temperature, the lower the atmospheric pressure, the more volatile the hydrochloric acid. Therefore, the problem of volatilization of hydrochloric acid is urgently needed to be solved. The acid mist overflowed by the volatilization of the hydrochloric acid not only pollutes the air, but also wastes resources and increases the cost, and the strong hydrochloric acid taste can be smelled in the concentrated place of the hydrochloric acid storage tank in a factory to cause harm to human bodies.
The chinese patent (application No. 201420390504.4) discloses a hydrochloric acid storage tank condensation demisting device, which comprises a condensation pipe, wherein the condensation pipe is a spiral acid mist condensation pipe, and the pipe body is bent to be spiral; the spiral acid mist condensation pipe vertically penetrates through the barrel body with the built-in cooling water, and the upper port and the lower port of the pipe are respectively introduced into the atmosphere and hydrochloric acid in the hydrochloric acid storage tank; the barrel body is provided with a cooling water pipe for introducing and discharging cooling water. This patent utilizes the condenser pipe that lets in the circulating water to get back the storage tank with the hydrochloric acid condensation that volatilize, has saved manufacturing cost, has protected natural environment.
The above patents have the following problems:
1. the hydrochloric acid storage tank with the upper end communicated with the atmosphere can undoubtedly introduce impurities and water vapor in the atmosphere, and certain influence is generated on the concentration and purity of hydrochloric acid in the storage tank.
2. The hydrochloric acid storage tank is not provided with an acidity detector, so that the quality of the hydrochloric acid in the storage tank cannot be controlled in real time.
3. The hydrochloric acid in the storage tank can not be directly put into production and use, and a filtering and purifying device is additionally arranged.
Therefore, how to design a storage filtration equipment of catalyst hydrochloric acid for producing PVB, avoid because the pollution and the harm that arouse in hydrochloric acid fog discharges the atmosphere, avoid hydrochloric acid to volatilize the concentration that influences the hydrochloric acid in the storage tank, avoid the air impurity and the vapor that hydrochloric acid introduces in the condensation process, solve the purity problem that hydrochloric acid directly puts into production and use from the storage tank simultaneously. This is a technical problem to be solved in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the above-mentioned problem that prior art exists, provide a production PVB used catalyst hydrochloric acid's storage filtration equipment, avoid because hydrochloric acid mist discharges pollution and harm that arouses in the atmosphere, avoid hydrochloric acid to volatilize the concentration that influences hydrochloric acid in the storage tank, avoid air impurity and the vapor that hydrochloric acid introduced in the condensation process, solve the purity problem that hydrochloric acid directly drops into the use of production from the storage tank simultaneously.
The utility model aims at realizing through the following technical scheme:
the utility model provides a produce storage filtration equipment of used catalyst hydrochloric acid of PVB, includes condensing equipment and hydrochloric acid storage tank, condensing equipment includes cooling water cavity and spiral condenser pipe, set up water inlet and delivery port on the cooling water cavity, the cooling water cavity is installed the top of hydrochloric acid storage tank, spiral condenser pipe is arranged in the cooling water cavity, the upper end of spiral condenser pipe stretches out the top surface of cooling water cavity, the lower extreme of spiral condenser pipe with the top intercommunication of hydrochloric acid storage tank, a serial communication port, set up drying device on the upper end of spiral condenser pipe, the bottom and a hydrochloric acid filter equipment intercommunication of hydrochloric acid storage tank.
The improvement of the technical scheme is as follows: the drying device is a drying cup with an upper port and a lower port which are closed, the lower port of the drying cup is in butt joint with the upper end of the spiral condensing tube, and the drying cup is internally provided with drying agent particles.
The technical scheme is further improved: and a metering device and a reaction device are sequentially arranged on a pipeline led out from the bottom of the hydrochloric acid filtering device.
The technical scheme is further improved as follows: and a valve is arranged on a pipeline connecting the hydrochloric acid filtering device and the metering device.
The technical scheme is further improved: and a pH detection device is arranged in the hydrochloric acid storage tank.
The technical scheme is further improved as follows: the filter element in the hydrochloric acid filter device is a filter element for filtering hydrochloric acid.
The technical scheme is further improved: the middle part of the hydrochloric acid storage tank is cylindrical, the top and the bottom of the hydrochloric acid storage tank are both reducing and closing-in, and a support is arranged at the bottom of the hydrochloric acid storage tank.
The utility model has the advantages that:
1. the utility model has the characteristics of simple structure and easy disassembly, and avoids the problem of high maintenance cost caused by complex structure;
2. the utility model prevents the impurities in the air from entering the hydrochloric acid storage tank;
3. the utility model combines a plurality of devices in one hydrochloric acid storage tank, and completes the high-quality storage of hydrochloric acid with less cost;
4. the utility model avoids the environmental problem caused by the seepage of the acid mist of the hydrochloric acid, and can recycle the acid mist volatilized by the hydrochloric acid;
5. the utility model can realize that the hydrochloric acid can be directly put into use without secondary distillation after being filtered by the filter element;
6. the pH detection device is arranged in the hydrochloric acid storage tank, so that the pH value of the hydrochloric acid in the hydrochloric acid storage tank can be fed back in real time;
7. the utility model provides high production efficiency has saved energy resource consumption, has improved production standard, has created the condition for PVB high quality production.
Drawings
Fig. 1 is a schematic diagram of a connection structure of a storage and filtration device for hydrochloric acid, a catalyst used in PVB production.
The numbering in the figure is: 1-a drying device, 2-a condensing device, 3-a hydrochloric acid storage tank, 4-a pH detection device, 5-a hydrochloric acid filtering device, 6-a bracket, 7-a valve, 8-a metering device and 9-a reaction device.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the utility model relates to an embodiment of the used catalyst hydrochloric acid of production PVB's storage filtration equipment, including condensing equipment 2 and hydrochloric acid storage tank 3, condensing equipment 2 includes cooling water cavity and spiral condenser pipe, set up water inlet and delivery port on the cooling water cavity, the cooling water cavity is installed hydrochloric acid storage tank 3's top, the spiral condenser pipe is arranged in the cooling water cavity, stretch out the upper end of spiral condenser pipe the top surface of cooling water cavity, the lower extreme of spiral condenser pipe with hydrochloric acid storage tank 3's top intercommunication, set up drying device 1 on the upper end of spiral condenser pipe, hydrochloric acid storage tank 3's bottom and a hydrochloric acid filter equipment 5 intercommunication.
Specifically, the method comprises the following steps: the drying device 1 is a drying cup with a closed upper end port and a closed lower end port, the lower end port of the drying cup is in butt joint with the upper end of the spiral condensing tube, and drying agent particles are arranged in the drying cup.
Furthermore, a metering device 8 and a reaction device 9 are arranged on a pipeline led out from the bottom of the hydrochloric acid filtering device 5 in sequence.
Still further, a valve 7 is arranged on the pipeline connecting the hydrochloric acid filtering device 5 and the metering device 8.
Further, a pH detector is provided in the hydrochloric acid tank 3.
Preferably, the filter element in the hydrochloric acid filter device 5 is a filter element for hydrochloric acid filtration.
Furthermore, the middle part of the hydrochloric acid storage tank 3 is cylindrical, the top and the bottom of the hydrochloric acid storage tank 3 are both diameter-reduced and closed, and the bottom of the hydrochloric acid storage tank 3 is provided with a support 6.
When the drying device is used, drying agent particles which do not react with hydrochloric acid are placed in the drying cup of the drying device 1, condensed water enters the drying cup from the water inlet below the cooling water cavity of the condensing device 2, and after the spiral condensing pipe is cooled, the condensed water flows out from the water outlet above the cooling water cavity.
Hydrochloric acid is injected and stored in the storage tank 3, when the hydrochloric acid gas is volatilized, the condensing device 2 can cool the hydrochloric acid gas to be collected again and then flow back to the hydrochloric acid storage tank 3, and in addition, the upper drying device 1 can absorb water vapor in the air while blocking dust impurities in the air. The hydrochloric acid storage tank 3 is internally provided with a pH detection device 4 which can feed back the pH value of the hydrochloric acid in the storage tank in real time. The hydrochloric acid filtering device 5 below the storage tank 3 adopts a filter element for filtering hydrochloric acid, and can filter the hydrochloric acid under the action of gravity. The filtered hydrochloric acid can pass through a valve 7 and then is directly put into a reaction device 9 by a metering device 8 according to the dosage.
During production, filtered and purified hydrochloric acid can flow into a metering device 8 by opening a valve 7, and then is fed into a reaction device 9 according to the required amount.
The above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a produce storage filtration equipment of used catalyst hydrochloric acid of PVB, includes condensing equipment and hydrochloric acid storage tank, condensing equipment includes cooling water cavity and spiral condenser pipe, set up water inlet and delivery port on the cooling water cavity, the cooling water cavity is installed the top of hydrochloric acid storage tank, spiral condenser pipe is arranged in the cooling water cavity, the upper end of spiral condenser pipe stretches out the top surface of cooling water cavity, the lower extreme of spiral condenser pipe with the top intercommunication of hydrochloric acid storage tank, a serial communication port, set up drying device on the upper end of spiral condenser pipe, the bottom and a hydrochloric acid filter equipment intercommunication of hydrochloric acid storage tank.
2. The apparatus of claim 1, wherein the drying device is a drying cup having a closed upper end and a closed lower end, the lower end of the drying cup is connected to the upper end of the spiral condenser tube, and the drying cup is filled with desiccant particles.
3. The apparatus for storing and filtering the catalyst hydrochloric acid used for PVB production according to claim 1 or 2, wherein the metering device and the reaction device are arranged in sequence on a pipeline led out from the bottom of the hydrochloric acid filtering device.
4. The apparatus of claim 3, wherein a valve is disposed in the conduit connecting the hydrochloric acid filtering device and the metering device.
5. The apparatus of claim 1 or claim 2, wherein a pH detector is disposed within the hydrochloric acid storage tank.
6. The apparatus of claim 4, wherein a pH detection device is disposed in the hydrochloric acid storage tank.
7. The apparatus of claim 1 or 2, wherein the filter element of the hydrochloric acid filter device is a filter element for filtering hydrochloric acid.
8. The apparatus of claim 6, wherein the filter element of the hydrochloric acid filter unit is a filter element for filtering hydrochloric acid.
9. The apparatus of claim 1 or 2, wherein the hydrochloric acid storage tank has a cylindrical middle portion, the top and bottom portions of the hydrochloric acid storage tank are both reduced in diameter, and a support is disposed on the bottom portion of the hydrochloric acid storage tank.
10. The apparatus of claim 8, wherein the hydrochloric acid storage tank has a cylindrical middle portion, the top and bottom portions of the hydrochloric acid storage tank are both reduced in diameter and closed, and a support is disposed on the bottom portion of the hydrochloric acid storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222457360.7U CN218618251U (en) | 2022-09-16 | 2022-09-16 | Storage filtration equipment of used catalyst hydrochloric acid of production PVB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222457360.7U CN218618251U (en) | 2022-09-16 | 2022-09-16 | Storage filtration equipment of used catalyst hydrochloric acid of production PVB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218618251U true CN218618251U (en) | 2023-03-14 |
Family
ID=85466068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222457360.7U Active CN218618251U (en) | 2022-09-16 | 2022-09-16 | Storage filtration equipment of used catalyst hydrochloric acid of production PVB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218618251U (en) |
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2022
- 2022-09-16 CN CN202222457360.7U patent/CN218618251U/en active Active
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