CN111054239A - Integrated system for feeding and proportioning polymerization inhibitor of acrylic acid device - Google Patents
Integrated system for feeding and proportioning polymerization inhibitor of acrylic acid device Download PDFInfo
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- CN111054239A CN111054239A CN201911382875.1A CN201911382875A CN111054239A CN 111054239 A CN111054239 A CN 111054239A CN 201911382875 A CN201911382875 A CN 201911382875A CN 111054239 A CN111054239 A CN 111054239A
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- tank
- polymerization inhibitor
- preparation tank
- acrylic acid
- preparation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/883—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using flow rate controls for feeding the substances
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention belongs to the technical field of batching, and particularly relates to a polymerization inhibitor feeding and batching integrated system for an acrylic acid device. The system comprises a preparation tank and a conveying tank, wherein the preparation tank and the conveying tank are of an integrated structure, a partition plate is arranged between the preparation tank and the conveying tank, the preparation tank is arranged on the upper layer, the conveying tank is arranged on the lower layer, the preparation tank is respectively communicated with a polymerization inhibitor pipeline, a compressed air pipeline, a solvent pipeline and a waste gas treatment device, the compressed air pipeline is communicated with the bottom of the preparation tank, and a discharge hole of the preparation tank is formed in the bottom of the preparation tank; the device is characterized in that a conveying tank feed inlet is formed in the conveying tank, a preparation tank discharge outlet is connected with the conveying tank feed inlet, a conveying tank discharge outlet is formed in the bottom of the conveying tank, and the conveying tank discharge outlet is connected with an acrylic acid device through a filter. According to the invention, the preparation tank and the conveying tank are integrally designed, so that the equipment has the advantages of small floor area, high working efficiency and good preparation quality, and meanwhile, the labor intensity of workers is reduced, and the energy-saving and environment-friendly effects are realized.
Description
Technical Field
The invention belongs to the technical field of batching, and particularly relates to a polymerization inhibitor feeding and batching integrated system for an acrylic acid device.
Background
Acrylic acid is an important chemical raw material, and the molecule of the acrylic acid contains a carbon-carbon double bond and a carboxyl structure, so that a series of compounds can be derived to form a large class of acrylic acid products. The unique acrylic industry has been formed in the modern chemical industry.
Acrylic acid is an easily polymerizable vinyl monomer and is commonly polymerized during its production, storage and transportation. The polymerization of acrylic acid is divided into two categories: one is oligomer-forming reactions, such as dimerization, which produce small molecular weights and are reversible; one is vinyl polymerization, which produces high molecular weight, highly insoluble, popcorn-like or rubbery polymers. The polymers formed by vinyl polymerization block pipes, trays, pumps, etc., seriously threatening the normal operation of the production plant, and therefore the occurrence of such polymerization must be avoided.
The reasons for the polymerization of acrylic acid are many: factors such as the presence of initiators, high temperatures and light can lead to rapid polymerization of acrylic acid. In order to prevent polymerization of acrylic acid during the production of the apparatus, the following measures may be taken:
(1) adding a polymerization inhibitor and controlling the content to be sufficient: the type, content and adding position of the polymerization inhibitor are effectively controlled;
(2) reasonable equipment structure and operation process parameters are required;
(3) effective heat preservation measures are adopted to avoid the polymerization of acrylic acid gas due to condensation on the tower wall or the pipe wall, and the local overhigh temperature is avoided while heat preservation is carried out;
(4) the presence of oxygen is effective to prevent polymerization of acrylic acid, so that a suitable amount of air or oxygen can be introduced into the separation vessel.
It is essential to stabilize the production that a certain amount of a polymerization inhibitor is added to inhibit the polymerization of acrylic acid during the production thereof. The polymerization inhibitor is generally in the form of solid powder and needs to be dissolved by using corresponding process materials before being added. The traditional polymerization inhibitor configuration system adopts a split structure of a preparation tank and a conveying tank, so that the occupied area of equipment is large, the labor intensity of workers in tank transfer is high, and the environmental protection factor of tail gas treatment is not considered.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcome prior art's not enough, provide an acrylic acid device polymerization inhibitor and give batching integration system, will prepare jar and carry jar integrated design, equipment area is little, and work efficiency is high, has reduced staff's intensity of labour simultaneously, and is pollution-free, energy-concerving and environment-protective.
The invention is realized by adopting the following technical scheme:
the polymerization inhibitor and batching integrated system of the acrylic acid device comprises a preparation tank and a conveying tank, wherein the preparation tank and the conveying tank are of an integrated structure, a partition plate is arranged between the preparation tank and the conveying tank, the preparation tank is arranged on the upper layer, the conveying tank is arranged on the lower layer, the preparation tank is respectively communicated with a polymerization inhibitor pipeline, a compressed air pipeline, a solvent pipeline and a waste gas treatment device, the compressed air pipeline is communicated with the bottom of the preparation tank, and a discharge hole of the preparation tank is formed in the bottom of the preparation tank; the device is characterized in that a conveying tank feed inlet is formed in the conveying tank, a preparation tank discharge outlet is connected with the conveying tank feed inlet, a conveying tank discharge outlet is formed in the bottom of the conveying tank, and the conveying tank discharge outlet is connected with an acrylic acid device through a filter.
The preparation tank is provided with a polymerization inhibitor feeding port, the polymerization inhibitor pipeline is communicated with the preparation tank through the polymerization inhibitor feeding port, and the polymerization inhibitor feeding port is provided with a wire mesh. The wire mesh is beneficial to the dispersion of the polymerization inhibitor and can prevent the polymerization inhibitor from caking, and the agglomerated polymerization inhibitor powder is not beneficial to the dispersion of the polymerization inhibitor and can cause the damage of the stirrer.
The compressed air pipeline on be equipped with rotor flow meter, rotor flow meter shows compressed air addition, and the takeover extends to the baffle bottom, compressed air's the stirring that the existing polymerization inhibitor solution that is favorable to of bubbling mixes, simultaneously, the existence of oxygen also is favorable to improving the inhibition effect of polymerization inhibitor.
And the partition board in the preparation tank is provided with a communicating pipe which is communicated with the preparation tank and the conveying tank. Set up communicating pipe on the baffle and be used for balancing the pressure between preparation jar and the transport jar, prevent that the transport jar from producing malleation (when feeding) or negative pressure (when the ejection of compact), the highest technology liquid level that the height of communicating pipe must be higher than the preparation jar required prevents that the solvent that has not configured from passing through communicating pipe and getting into the transport jar.
And a flame arrester and an air conditioner are sequentially arranged between the preparation tank and the waste gas treatment device. The flame arrester can effectively prevent flame from entering a polymerization inhibitor to a batching system under the abnormal condition of a follow-up system; the air conditioner can adjust the size of the waste gas pumped out by the system and match the air inflow of the compressed air.
The preparation tank is provided with a stirrer, a pressure gauge, a sampling port and a liquid level meter, and the sampling port is arranged at the bottom of the preparation tank.
And a manhole and a liquid level meter are arranged on the conveying tank.
And a delivery pump and a remote flow meter are sequentially arranged between the filter and the acrylic acid device.
Preferably, the discharge port of the conveying tank is connected with the acrylic acid device through at least two filters arranged in parallel and at least two conveying pumps arranged in parallel and a remote flow meter. The remote flow meter can display the set adding amount of the polymerization inhibitor in real time. The filter and the delivery pump which are arranged in parallel can be switched to use, and the influence on production due to faults is avoided.
The batching process comprises the following steps:
(1) adding solvent and polymerization inhibitor powder into the preparation tank, starting stirring, introducing compressed air, and sending the waste gas in the preparation tank to a waste gas treatment device for treatment;
(2) after stirring for a certain time, sampling and analyzing whether the polymerization inhibitor solution in the preparation tank is qualified or not;
(3) putting the qualified polymerization inhibitor solution into a conveying tank through a discharge hole of a preparation tank and a feed hole of the conveying tank;
(4) the polymerization inhibitor in the conveying tank is filtered by a filter and then is conveyed to an acrylic acid device;
(5) and closing a valve at the discharge port of the preparation tank through the feed port of the conveying tank, and allowing the preparation tank to enter the polymerization inhibitor preparation of the next stage.
Further, the concrete batching process steps are as follows:
(1) adding the solvent into the preparation tank through a solvent pipeline to a certain liquid level, and starting a stirrer;
(2) adding weighed polymerization inhibitor powder into the preparation tank through a polymerization inhibitor pipeline;
(3) introducing a certain amount of compressed air into the preparation tank through a compressed air pipeline, and adjusting an air conditioner to balance the pressure of the preparation tank;
(4) after stirring for a certain time, sampling and analyzing whether the polymerization inhibitor solution in the preparation tank is qualified or not;
(5) putting the qualified polymerization inhibitor solution into a conveying tank through a discharge hole of a preparation tank and a feed hole of the conveying tank;
(6) the polymerization inhibitor solution in the conveying tank is filtered by a filter and then is conveyed to the required part of the acrylic acid device by a conveying pump;
(7) and closing valves at the discharge port of the preparation tank and the feed port of the conveying tank, and allowing the preparation tank to enter polymerization inhibitor preparation at the next stage.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the preparation tank and the conveying tank are integrally designed, so that the equipment has the advantages of small floor area, high working efficiency and good preparation quality, and meanwhile, the labor intensity of workers is reduced, and the equipment is pollution-free, energy-saving and environment-friendly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. a polymerization inhibitor line; 2. a rotameter; 3. a compressed air line; 4. a solvent line; 5. a polymerization inhibitor feeding port; 6. a wire mesh; 7. preparing a tank; 8. a communicating pipe; 9. preparing a discharge port of the tank; 10. a feed inlet of the conveying tank; 11. a liquid level meter; 12. a delivery tank; 13. (ii) a 14. A discharge port of the conveying tank; 15. a filter; 16. (ii) a 17. A remote-transmission flow meter; 18. an acrylic acid device; 19. an exhaust gas treatment device; 20. an air conditioner; 21. a flame arrestor; 22. a stirrer; 23. a pressure gauge; 24. a sampling port; 25. a separator.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the polymerization inhibitor and blending integrated system for the acrylic acid device comprises a preparation tank 7 and a delivery tank 12, wherein the preparation tank 7 and the delivery tank 12 are of an integrated structure, a partition plate 25 is arranged between the preparation tank 7 and the delivery tank 12, the preparation tank 7 is arranged on the upper layer, the delivery tank 12 is arranged on the lower layer, the preparation tank 7 is respectively communicated with a polymerization inhibitor pipeline 1, a compressed air pipeline 3, a solvent pipeline 4 and an exhaust gas treatment device 19, the compressed air pipeline 3 is communicated with the bottom of the preparation tank 7, and a preparation tank discharge port 9 is arranged at the bottom of the preparation tank 7; the acrylic acid production device is characterized in that a conveying tank feeding port 10 is formed in the conveying tank 12, the preparation tank discharging port 9 is connected with the conveying tank feeding port 10, a conveying tank discharging port 14 is formed in the bottom of the conveying tank 12, and the conveying tank discharging port 14 is connected with an acrylic acid device 18 through a filter 15.
The preparation tank 7 is provided with a polymerization inhibitor feeding port 5, the polymerization inhibitor pipeline 1 is communicated with the preparation tank 7 through the polymerization inhibitor feeding port 5, and the polymerization inhibitor feeding port 5 is provided with a metal wire mesh 6.
And a rotor flow meter 2 is arranged on the compressed air pipeline 3.
A communicating pipe 8 is arranged on the partition plate 25 in the preparation tank 7, and the communicating pipe 8 is communicated with the preparation tank 7 and the delivery tank 12.
A flame arrester 21 and an air conditioner 20 are sequentially arranged between the preparation tank 7 and the waste gas treatment device 19.
The preparation tank 7 is provided with a stirrer 22, a pressure gauge 23, a sampling port 24 and a liquid level meter 11, and the sampling port 24 is arranged at the bottom of the preparation tank 7.
The conveying tank 12 is provided with a manhole 13 and a liquid level meter 11.
The discharge port 14 of the conveying tank is connected with an acrylic acid device 18 through two filters 15 arranged in parallel and two conveying pumps 16 arranged in parallel and a remote flow meter 17.
The batching process comprises the following steps:
(1) adding the solvent into the preparation tank 7 through a solvent pipeline 4 to a certain liquid level, and starting the stirrer 22;
(2) adding weighed polymerization inhibitor powder into a preparation tank 7 through a polymerization inhibitor feeding port 5 by a polymerization inhibitor pipeline 1;
(3) a certain amount of compressed air is introduced into the preparation tank 7 through the compressed air line 3, and the air conditioner 20 sends the waste gas in the preparation tank 7 to the waste gas treatment device 19 to balance the pressure in the preparation tank 7;
(4) after stirring for a certain time, sampling from the sampling port 24 to analyze whether the polymerization inhibitor solution in the preparation tank 7 is qualified or not;
(5) qualified polymerization inhibitor solution is put into a conveying tank 12 through a discharge hole 9 of a preparation tank and a feed hole 10 of the conveying tank;
(6) the polymerization inhibitor solution in the delivery tank 12 is filtered by a filter 15 and then delivered to a desired part of an acrylic acid device 18 by a delivery pump 16;
(7) and closing valves at a discharge port 9 of the preparation tank and a feed port 10 of the conveying tank, and allowing the preparation tank 7 to enter polymerization inhibitor preparation at the next stage.
Of course, the foregoing is only a preferred embodiment of the invention and should not be taken as limiting the scope of the embodiments of the invention. The present invention is not limited to the above examples, and equivalent changes and modifications made by those skilled in the art within the spirit and scope of the present invention should be construed as being included in the scope of the present invention.
Claims (10)
1. The utility model provides an acrylic acid device polymerization inhibitor gives batching integration system, includes preparation jar (7) and delivery tank (12), its characterized in that: the preparation tank (7) and the conveying tank (12) are of an integrated structure, a partition plate (25) is arranged between the preparation tank (7) and the conveying tank (12), the preparation tank (7) is arranged on the upper layer, the conveying tank (12) is arranged on the lower layer, the preparation tank (7) is respectively communicated with the polymerization inhibitor pipeline (1), the compressed air pipeline (3), the solvent pipeline (4) and the waste gas treatment device (19), the compressed air pipeline (3) is communicated with the bottom of the preparation tank (7), and a preparation tank discharge hole (9) is formed in the bottom of the preparation tank (7); be equipped with on carrying jar (12) and carry jar feed inlet (10), preparation jar discharge gate (9) and carry jar feed inlet (10) to be connected, the bottom of carrying jar (12) is equipped with carries jar discharge gate (14), carry jar discharge gate (14) to be connected with acrylic acid device (18) through filter (15).
2. The acrylic acid device polymerization inhibitor dosing integrated system as set forth in claim 1, wherein: the polymerization inhibitor feeding port (5) is arranged on the preparation tank (7), the polymerization inhibitor pipeline (1) is communicated with the preparation tank (7) through the polymerization inhibitor feeding port (5), and the polymerization inhibitor feeding port (5) is provided with a wire mesh (6).
3. The acrylic acid device polymerization inhibitor dosing integrated system as set forth in claim 1, wherein: and a rotor flow meter (2) is arranged on the compressed air pipeline (3).
4. The acrylic acid device polymerization inhibitor dosing integrated system as set forth in claim 1, wherein: a communicating pipe (8) is arranged on an inner partition plate (25) of the preparation tank (7), and the communicating pipe (8) is communicated with the preparation tank (7) and the conveying tank (12).
5. The acrylic acid device polymerization inhibitor dosing integrated system as set forth in claim 1, wherein: a flame arrester (21) and an air conditioner (20) are sequentially arranged between the preparation tank (7) and the waste gas treatment device (19).
6. The acrylic acid device polymerization inhibitor dosing integrated system as set forth in claim 1, wherein: the preparation tank (7) is provided with a stirrer (22), a pressure gauge (23), a sampling port (24) and a liquid level meter (11), and the sampling port (24) is arranged at the bottom of the preparation tank (7).
7. The acrylic acid device polymerization inhibitor dosing integrated system as set forth in claim 1, wherein: the conveying tank (12) is provided with a manhole (13) and a liquid level meter (11).
8. The acrylic acid device polymerization inhibitor dosing integrated system as set forth in claim 1, wherein: and a delivery pump (16) and a remote flow meter (17) are sequentially arranged between the filter (15) and the acrylic acid device (18).
9. The acrylic acid device polymerization inhibitor dosing integrated system as set forth in claim 8, wherein: the discharge port (14) of the conveying tank is connected with an acrylic acid device (18) through at least two filters (15) arranged in parallel and at least two conveying pumps (16) arranged in parallel by a remote flow meter (17).
10. The acrylic acid installation polymerization inhibitor dosing integrated system according to any one of claims 1 to 9, wherein: the batching process comprises the following steps:
(1) adding solvent and polymerization inhibitor powder into the preparation tank (7), starting stirring, introducing compressed air, and conveying the waste gas in the preparation tank (7) to a waste gas treatment device (19) for treatment;
(2) after stirring for a certain time, sampling and analyzing whether the polymerization inhibitor solution in the preparation tank (7) is qualified or not;
(3) qualified polymerization inhibitor solution is put into a conveying tank (12) through a discharge hole (9) of a preparation tank and a feed hole (10) of the conveying tank;
(4) the polymerization inhibitor in the conveying tank (12) is filtered by a filter (15) and then is conveyed to an acrylic acid device (18);
(5) the valve at the discharge port (9) of the preparation tank and the feed port (10) of the conveying tank is closed, and the preparation tank (7) can enter the polymerization inhibitor preparation of the next stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911382875.1A CN111054239A (en) | 2019-12-28 | 2019-12-28 | Integrated system for feeding and proportioning polymerization inhibitor of acrylic acid device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911382875.1A CN111054239A (en) | 2019-12-28 | 2019-12-28 | Integrated system for feeding and proportioning polymerization inhibitor of acrylic acid device |
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| Publication Number | Publication Date |
|---|---|
| CN111054239A true CN111054239A (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911382875.1A Withdrawn CN111054239A (en) | 2019-12-28 | 2019-12-28 | Integrated system for feeding and proportioning polymerization inhibitor of acrylic acid device |
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| CN (1) | CN111054239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797611A (en) * | 2021-01-18 | 2022-07-29 | 宁夏宝丰能源集团股份有限公司 | Catalyst reladling device and method |
-
2019
- 2019-12-28 CN CN201911382875.1A patent/CN111054239A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797611A (en) * | 2021-01-18 | 2022-07-29 | 宁夏宝丰能源集团股份有限公司 | Catalyst reladling device and method |
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Application publication date: 20200424 |
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| WW01 | Invention patent application withdrawn after publication |