CN210479706U - Water seal arrangement of acrylonitrile storage tank - Google Patents
Water seal arrangement of acrylonitrile storage tank Download PDFInfo
- Publication number
- CN210479706U CN210479706U CN201921420151.7U CN201921420151U CN210479706U CN 210479706 U CN210479706 U CN 210479706U CN 201921420151 U CN201921420151 U CN 201921420151U CN 210479706 U CN210479706 U CN 210479706U
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- pipe
- storage tank
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 112
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 title claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims 1
- 231100000614 poison Toxicity 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 230000007096 poisonous effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 101100314150 Caenorhabditis elegans tank-1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Abstract
The application provides a water seal device of an acrylonitrile storage tank, which comprises a storage tank and a water seal device body; the top of the storage tank is connected with a nitrogen pipe and is connected with the water seal device body; the water sealing device body comprises a water sealing tank body, an overflow pipe, a water replenishing pipe and an atmosphere communicating pipe; and a drain outlet is formed at the bottom of the water seal tank body. The utility model discloses can handle poisonous and harmful substance such as a large amount of acrylonitrile and finally discharge in the atmosphere, reduce the pollution to the atmosphere.
Description
Technical Field
The utility model relates to a water seal technical field especially relates to a water seal arrangement of acrylonitrile storage tank.
Background
The main and side products produced by the acrylonitrile device have high toxicity, and a large amount of toxic substances exist in the reactor tail gas which is not fully absorbed and the waste liquid left after elution. Most of domestic acrylonitrile manufacturers burn the waste liquid, and the waste gas is directly discharged into the atmosphere, thereby causing great pollution to the environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a water seal arrangement of acrylonitrile storage tank.
In order to solve the technical problem, the utility model provides a following technical scheme:
a water seal device of an acrylonitrile storage tank comprises a storage tank and a water seal device body; the top of the storage tank is provided with a standby port, a nitrogen introducing pipe is arranged on the standby port, one end of the nitrogen introducing pipe is communicated with the storage tank through the standby port, and the other end of the nitrogen introducing pipe is connected with the water sealing device body; the nitrogen pipe is connected with a pressure control meter; the water seal device body comprises a water seal tank body, an overflow pipe arranged above the water seal tank body, a water replenishing pipe arranged below the water seal tank body and an atmosphere communicating pipe arranged on the water seal tank body, and the atmosphere communicating pipe is connected with the atmosphere; and a drain outlet is formed at the bottom of the water seal tank body.
Furthermore, a nitrogen self-operated valve is arranged on the nitrogen introducing pipe.
Furthermore, an access port and an access valve are sequentially arranged at the interface of the nitrogen pipe and the water seal device body.
Furthermore, the overflow pipe is S-shaped, the upper pipe section of the overflow pipe is transversely bent towards the outer side departing from the water seal tank body and then vertically bent upwards, and the lower end of the overflow pipe is connected with the pipe section located on the ground.
Furthermore, an overflow port and an overflow valve are sequentially arranged at the interface of the overflow pipe and the water seal tank body.
Furthermore, a control valve is arranged on the water replenishing pipe.
Further, the water seal tank body is provided with a water seal height, and the overflow pipe is arranged at the highest position of the water seal height.
Furthermore, a drain valve is arranged at the drain outlet and comprises a drain pipe and a drain control valve body.
According to the above technical scheme, the utility model discloses following beneficial effect has:
the utility model is provided with the structure that after the reaction gas discharged from the storage tank is subjected to liquid seal by the water seal tank, the nitrogen pressure is adjusted by the nitrogen self-operated valve at the upper part of the water seal, and the overflow water volume is checked in the water seal tank and then adjusted; the device can treat that a large amount of toxic and harmful substances such as acrylonitrile are finally discharged to the atmosphere, and effectively reduces the atmospheric emission of acrylonitrile.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of the present invention.
Fig. 2 is a schematic connection diagram of the water seal tank of the present invention.
Description of reference numerals:
the device comprises a storage tank-1, a spare port-10, a nitrogen pipe-11, an access valve-12, a nitrogen self-operated valve-13, a water seal tank body-2, overflow pipes-3, 30-overflow valves, a water replenishing pipe-4, a control valve-40, an atmosphere communicating pipe-5, a sewage outlet-6, a sewage discharge pipe-61, a sewage discharge control valve body-62 and a pressure control meter-7.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Referring to fig. 1 to 2, the present application is further illustrated, and the water seal device of the acrylonitrile storage tank 1 comprises a storage tank 1 and a water seal device body; the top of the storage tank 1 is provided with a standby port 2, a nitrogen introducing pipe 11 is installed on the standby port 2, one end of the nitrogen introducing pipe 11 is communicated with the storage tank 1 through the standby port 2, the other end of the nitrogen introducing pipe 11 is connected with the water sealing device body, an access port and an access valve 12 are sequentially arranged at an interface of the nitrogen introducing pipe 11 connected with the water sealing device body, and a nitrogen self-force valve 13 is installed on the nitrogen introducing pipe 11; the nitrogen introducing pipe 11 is connected with a pressure control meter 7; the water seal device body comprises a water seal tank body 2, an overflow pipe 3 arranged above the water seal tank body 2 and a water supplementing pipe 4 arranged below the water seal tank body 2, wherein a control valve 40 is arranged on the water supplementing pipe 4, and the water seal device body also comprises an atmosphere communicating pipe 5 arranged on the water seal tank body 2 and connected with atmosphere; the overflow pipe 3 is S-shaped, an upper pipe section of the overflow pipe 3 is transversely bent towards the outer side away from the water seal tank body 2 and then is vertically bent upwards, the lower end of the overflow pipe 3 is connected with a pipe section located on the ground, and an overflow port and an overflow valve 30 are sequentially arranged at the interface of the overflow pipe 3 and the water seal tank body 2; the water seal tank body 2 is provided with a water seal height, and the overflow pipe 3 is arranged at the highest position of the water seal height; the bottom of the water seal tank body 2 is provided with a drain outlet 6, the drain outlet 6 is provided with a drain valve, and the drain valve comprises a drain pipe 61 and a drain control valve body 62.
The working principle is as follows: the water seal device is divided into a positive pressure water seal and a negative pressure water seal.
Positive pressure water sealing:
when the pressure in the tank is too high, namely exceeds the height of water column in the water seal tank body 2 by 300mm, a certain pressure is discharged through the water seal to prevent overpressure.
When the storage tank 1 is internally provided with positive pressure and does not break the positive pressure water seal, the pressure in the storage tank 1 is less than or equal to 3000Pa (300 mm); when the pressure in the storage tank 1 is more than 3000Pa (300mm), the gas in the storage tank 1 enters the water seal tank body 2 through the nitrogen pipe 11 and presses out the water in the water seal tank body 2, the gas flows out through the overflow pipe 3, the liquid level of the water seal is reduced to be less than 300mm, the air enters the water seal from the atmosphere connecting pipe 5, the internal and external pressures in the storage tank 1 are kept balanced at the moment, and the water replenishing valve replenishes water to an overflow port (300m) of the water seal tank body 2.
Negative pressure water sealing:
when the pressure in the tank is too low, namely the height of a water column in the water-sealed tank body 2 is 300mm, certain air is introduced through the water seal to prevent the tank from being damaged by the super negative pressure.
When the pressure in the storage tank 1 is less than 3000Pa (300mm) and the water seal is not broken, the pressure is reduced to the pressure for breaking the water seal from less than 3000Pa (300mm), the liquid level of the water seal is reduced to be less than 300mm, air enters the water seal from the atmosphere connecting pipe 5, the internal and external pressures in the storage tank 1 are kept balanced, and the water replenishing valve replenishes water to an overflow port (300m) of the water seal tank body 2.
The operating procedures are used:
the control valve 40 of the water replenishing pipe 4 below the water seal tank body 2 is opened, after the replenishing water flows out from the overflow port, the replenishing water is slightly opened, after the overflow pipe 3 is checked that a small amount of water flows out, the nitrogen pressure at the upper part of the water seal is adjusted to 1800 plus 2200Pa through the nitrogen self-force valve 13; then, the water amount at the overflow port is checked, the nitrogen self-operated valve 13 is continuously adjusted between 1800-2200Pa, and the water overflows from the overflow pipe 3.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A water seal device of an acrylonitrile storage tank comprises a storage tank and a water seal device body; the method is characterized in that: the top of the storage tank is provided with a standby port, a nitrogen introducing pipe is arranged on the standby port, one end of the nitrogen introducing pipe is communicated with the storage tank through the standby port, and the other end of the nitrogen introducing pipe is connected with the water sealing device body; the nitrogen pipe is connected with a pressure control meter; the water seal device body comprises a water seal tank body, an overflow pipe arranged above the water seal tank body, a water replenishing pipe arranged below the water seal tank body and an atmosphere communicating pipe arranged on the water seal tank body, and the atmosphere communicating pipe is connected with the atmosphere; and a drain outlet is formed at the bottom of the water seal tank body.
2. The water seal device of an acrylonitrile storage tank, according to claim 1, wherein a nitrogen self-operated valve is installed on the nitrogen pipe.
3. The water seal device of an acrylonitrile storage tank according to claim 1, wherein an access port and an access valve are sequentially arranged at the interface of the nitrogen pipe and the water seal device body.
4. The water seal device of an acrylonitrile storage tank according to claim 1, wherein the overflow pipe is S-shaped, the upper pipe section of the overflow pipe is bent upwards vertically after being bent transversely towards the outer side away from the water seal tank body, and the lower end of the overflow pipe is connected with the pipe section located on the ground.
5. The water seal device of an acrylonitrile storage tank according to claim 1 or 4, wherein an overflow port and an overflow valve are sequentially arranged at the interface of the overflow pipe and the water seal tank body.
6. The water seal device of an acrylonitrile storage tank according to claim 1, wherein a control valve is arranged on the water replenishing pipe.
7. The water seal device of an acrylonitrile storage tank of claim 1, wherein the water seal tank body has a water seal height, and the overflow pipe is installed at the highest position of the water seal height.
8. The water seal device of an acrylonitrile storage tank as claimed in claim 1, wherein a blow-off valve is arranged at the blow-off port, and the blow-off valve comprises a blow-off pipe and a blow-off control valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420151.7U CN210479706U (en) | 2019-08-29 | 2019-08-29 | Water seal arrangement of acrylonitrile storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420151.7U CN210479706U (en) | 2019-08-29 | 2019-08-29 | Water seal arrangement of acrylonitrile storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210479706U true CN210479706U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921420151.7U Active CN210479706U (en) | 2019-08-29 | 2019-08-29 | Water seal arrangement of acrylonitrile storage tank |
Country Status (1)
| Country | Link |
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| CN (1) | CN210479706U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111806912A (en) * | 2020-07-23 | 2020-10-23 | 河南神马尼龙化工有限责任公司 | Pressure stabilizing protection system of nylon 66 saline solution storage tank |
| CN117072877A (en) * | 2023-08-21 | 2023-11-17 | 常州化工设计院有限公司 | A carbon disulfide high-level tank water seal production process and equipment |
-
2019
- 2019-08-29 CN CN201921420151.7U patent/CN210479706U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111806912A (en) * | 2020-07-23 | 2020-10-23 | 河南神马尼龙化工有限责任公司 | Pressure stabilizing protection system of nylon 66 saline solution storage tank |
| CN117072877A (en) * | 2023-08-21 | 2023-11-17 | 常州化工设计院有限公司 | A carbon disulfide high-level tank water seal production process and equipment |
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