CN211486595U - NMP decompression guiding mechanism for rectifying column - Google Patents
NMP decompression guiding mechanism for rectifying column Download PDFInfo
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- CN211486595U CN211486595U CN201922119468.3U CN201922119468U CN211486595U CN 211486595 U CN211486595 U CN 211486595U CN 201922119468 U CN201922119468 U CN 201922119468U CN 211486595 U CN211486595 U CN 211486595U
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Abstract
The utility model belongs to the technical field of diversion equipment for a rectifying tower, in particular to a diversion mechanism for an NMP (N-methyl pyrrolidone) vacuum rectifying tower, which comprises a diversion tank body, wherein an S-shaped inlet pipe is arranged in the diversion tank body, the feed end of the inlet pipe upwards penetrates through the top of the diversion tank body and is hermetically connected with the diversion tank body, the discharge end of the inlet pipe is close to the bottom of the diversion tank body, and the feed end of the inlet pipe is connected with a feed valve communicated with a vacuum rectifying tower system; the upper part of the diversion tank body is communicated with an emptying pipe, and the emptying pipe is connected with an emptying valve; the upper portion of the flow guide tank body is communicated with a discharge pipe, the discharge pipe is connected with a discharge valve, and the horizontal plane of the joint of the discharge pipe and the flow guide tank body is lower than the horizontal plane of the joint of the discharge pipe and the flow guide tank body. The scheme solves the problem that the vacuum system of the vacuum rectification tower and the normal pressure system of the discharge position cannot be effectively isolated due to the mechanism for discharging materials in the vacuum rectification tower in the prior art.
Description
Technical Field
The utility model belongs to the technical field of the diversion equipment for the rectifying column specifically is a NMP decompression guiding mechanism for rectifying column.
Background
NMP is rectified in a decompression rectifying tower and then needs to be discharged into the next production procedure. NMP relies on the natural overflow of material from decompression rectifying column exhaust mode mainly, and NMP is in the negative pressure state when flowing out in the decompression rectifying column, and next process is in the ordinary pressure state, and then, the vacuum system's of decompression rectifying column negative pressure can not be too big, otherwise will influence NMP from the overflow in the decompression rectifying column to lead to the adjustment range of negative pressure in the decompression rectifying column, be unfavorable for improving NMP's decompression rectifying efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a NMP is water conservancy diversion mechanism for decompression rectifying column to solve among the prior art decompression rectifying column because of the vacuum system of the effectual isolation decompression rectifying column of the mechanism of discharge material and the problem of the ordinary pressure system of row material department.
In order to achieve the above object, the basic scheme of the utility model provides a guiding mechanism for an NMP vacuum rectification tower, which comprises a guiding tank body, wherein an S-shaped feeding pipe is arranged inside the guiding tank body, the feeding end of the feeding pipe upwards penetrates through the top of the guiding tank body and is hermetically connected with the guiding tank body, the discharging end of the feeding pipe is close to the bottom of the guiding tank body, and the feeding end of the feeding pipe is connected with a feeding valve communicated with a vacuum rectification tower system; the upper part of the diversion tank body is communicated with an emptying pipe, and the emptying pipe is connected with an emptying valve; the upper portion of the flow guide tank body is communicated with a discharge pipe, the discharge pipe is connected with a discharge valve, and the horizontal plane of the joint of the discharge pipe and the flow guide tank body is lower than the horizontal plane of the joint of the discharge pipe and the flow guide tank body.
The principle and the beneficial effect of the basic scheme are as follows: a diversion tank body is arranged and used for storing materials in a common state. The feeding pipe is arranged, so that the material is discharged from the bottom close to the flow guide tank body, and liquid seal can be formed at the discharging end of the feeding pipe by utilizing the material. And an emptying pipe is arranged for discharging the air in the diversion tank body. A material discharging pipe is arranged for discharging the materials in the diversion tank body.
The material that flows out in the rectification tower system of reducing pressure passes through the inlet pipe and flows into the water conservancy diversion jar body in, and the air of the internal portion of water conservancy diversion jar is discharged through the blow-down pipe, and the mouth of pipe department of arranging the material pipe is increased gradually and higher to the material along with the internal portion of water conservancy diversion jar, makes the material from arranging the natural outflow of material pipe, and at this moment, the pressure of material is in the ordinary pressure state already. The static pressure difference generated by the S-shaped feeding pipe under the action of the height difference of the feeding end and the discharging end isolates the vacuum system of the vacuum rectification tower from the normal pressure system at the position of the discharging pipe, so that the discharge of materials cannot be influenced by the pressure adjustment of the vacuum system of the vacuum rectification tower, the pressure in the vacuum rectification tower can be adjusted in a large range, and the rectification efficiency in the vacuum rectification tower is improved.
Furthermore, the feed end of the feed pipe is connected with an expansion pipe. The expansion pipe is arranged and used for preventing materials from flowing backwards and increasing the buffer space.
Further, the top seal welding of inlet pipe and the water conservancy diversion jar body. Adopt the welded mode, can make the sealing performance between inlet pipe and the water conservancy diversion jar body better, avoid taking place the condition of leaking in the use.
Further, the expansion pipe is connected with the feeding pipe through a flange. The mode of adopting the flange is connected, makes things convenient for to dismantle the separation between expansion pipe and the inlet pipe, and then makes things convenient for expansion pipe and inlet pipe to be connected the installation, and simultaneously, flange joint is low to the required precision of processing, conveniently makes.
Further, the feed valve is connected with the expansion pipe through a flange. The mode that adopts the flange to connect can improve joint strength, also conveniently dismantles simultaneously.
Further, the blow-down pipe is connected with the flow guide tank body through a flange.
Further, the discharge valve is a ball valve. The opening and closing of the ball valve are convenient and fast, so that the discharging is controlled quickly.
Further, the feed valve is a gate valve. The gate valve has stronger tightness and pressure resistance, thereby better bearing the negative pressure effect generated by a vacuum system of the decompression rectifying tower.
Further, the emptying valve is a one-way valve. Make things convenient for the internal air of kuppe to discharge by oneself through the blow-down pipe, need not to open the operation to the atmospheric valve, it is internal to have avoided the gaseous backward flow in the blow-down pipe to the kuppe.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a diversion mechanism for an NMP vacuum distillation column of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a feed valve 1, an expansion pipe 2, an emptying valve 3, an emptying pipe 4, a feed pipe 5, a discharge end 51, a diversion tank body 6, a discharge pipe 7 and a discharge valve 8.
The embodiment is basically as shown in the attached figure 1: the utility model provides a NMP is water conservancy diversion mechanism for decompression rectifying column, includes the water conservancy diversion jar body 6, and the internally mounted of the water conservancy diversion jar body 6 has inlet pipe 5, and inlet pipe 5 is the S-shaped, and the feed end of inlet pipe 5 and the top seal weld of the water conservancy diversion jar body 6, the discharge end 51 of inlet pipe 5 down and be close to the bottom of the water conservancy diversion jar body 6. The feed end of the feed pipe 5 is connected with a vertical expansion pipe 2 through a flange, and the pipe diameter of the expansion pipe 2 is five times that of the feed pipe 5. The upper end of the expansion pipe 2 is connected with a feed valve 1 communicated with the vacuum rectification tower system through a flange, and the feed valve 1 is preferably a gate valve.
The left side of the upper part of the diversion tank body 6 is connected with an emptying pipe 4 through a flange, the emptying pipe 4 is connected with an emptying valve 3 through a flange, and the emptying valve 3 is preferably a one-way valve, so that the air in the diversion tank body 6 can be discharged only along the emptying pipe 4. The right side of the upper part of the diversion tank body 6 is connected with a discharge pipe 7 through a flange, the discharge pipe 7 is connected with a discharge valve 8, and the discharge valve 8 is preferably a ball valve. The connecting position of the discharge pipe 7 and the flow guide tank body 6 is lower than the connecting position of the emptying pipe 4 and the flow guide tank body 6.
The specific implementation process is as follows: open feed valve 1, the material that flows out from the decompression rectifying column system passes through feed valve 1 and enters into expansion pipe 2 in, then reentrant inlet pipe 5 in, discharge valve 8 is in the closed condition this moment, along with the material along inlet pipe 5 flow and flow gradually in the water conservancy diversion jar body 6, the air of the inside of the water conservancy diversion jar body 6 is extrudeed and is discharged through blow-down pipe 4, along with the air of the inside of the water conservancy diversion jar body 6 is discharged, the material of the inside of the water conservancy diversion jar body 6 increases gradually and is higher than the mouth of pipe department of arranging material pipe 7, open discharge valve 8, make the material from arranging the natural outflow of material pipe 7, at this moment, the pressure of material has been in the ordinary pressure state. The static pressure difference generated by the S-shaped feeding pipe 5 under the action of the height difference of the feeding end and the discharging end 51 isolates the vacuum system of the vacuum rectification tower from the normal pressure system at the position of the discharging pipe 7, so that the discharge of materials cannot be influenced by the pressure adjustment of the vacuum system of the vacuum rectification tower, the pressure in the vacuum rectification tower can be adjusted in a large range, and the rectification efficiency in the vacuum rectification tower is improved.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (9)
1. The utility model provides a NMP is water conservancy diversion mechanism for decompression rectifying column which characterized in that: the device comprises a flow guide tank body, wherein an S-shaped feeding pipe is arranged in the flow guide tank body, the feeding end of the feeding pipe upwards penetrates through the top of the flow guide tank body and is in sealed connection with the flow guide tank body, the discharging end of the feeding pipe is close to the bottom of the flow guide tank body, and the feeding end of the feeding pipe is connected with a feeding valve communicated with a reduced pressure rectification tower system; the upper part of the diversion tank body is communicated with an emptying pipe, and the emptying pipe is connected with an emptying valve; the upper portion of the flow guide tank body is communicated with a discharge pipe, the discharge pipe is connected with a discharge valve, and the horizontal plane of the joint of the discharge pipe and the flow guide tank body is lower than the horizontal plane of the joint of the discharge pipe and the flow guide tank body.
2. The guide mechanism for the NMP vacuum distillation tower according to claim 1, wherein: the feed end of the feed pipe is connected with an expansion pipe.
3. The guide mechanism for the NMP vacuum distillation tower according to claim 2, wherein: the inlet pipe is welded with the top of the flow guide tank body in a sealing manner.
4. The guide mechanism for the NMP vacuum distillation tower according to claim 3, wherein: the expansion pipe is connected with the feeding pipe through a flange.
5. The guide mechanism for the NMP vacuum distillation tower according to claim 4, wherein: the feed valve is connected with the expansion pipe through a flange.
6. The guide mechanism for the NMP vacuum distillation tower according to claim 5, wherein: and the emptying pipe is connected with the diversion tank body through a flange.
7. The guide mechanism for the NMP vacuum distillation tower according to claim 6, wherein: the discharge valve is a ball valve.
8. The diversion mechanism for an NMP vacuum distillation tower according to claim 7, wherein: the feed valve is a gate valve.
9. The guide mechanism for the NMP vacuum distillation tower according to claim 8, wherein: the emptying valve is a one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922119468.3U CN211486595U (en) | 2019-11-30 | 2019-11-30 | NMP decompression guiding mechanism for rectifying column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922119468.3U CN211486595U (en) | 2019-11-30 | 2019-11-30 | NMP decompression guiding mechanism for rectifying column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211486595U true CN211486595U (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922119468.3U Active CN211486595U (en) | 2019-11-30 | 2019-11-30 | NMP decompression guiding mechanism for rectifying column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211486595U (en) |
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2019
- 2019-11-30 CN CN201922119468.3U patent/CN211486595U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A diversion mechanism for NMP vacuum distillation tower Effective date of registration: 20221117 Granted publication date: 20200915 Pledgee: Chongqing Changshou Sub branch of China Construction Bank Corp. Pledgor: Chongqing Zhong run Chemical Co.,Ltd. Registration number: Y2022980022267 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 401221 room 5-2, No.20, Qixin Avenue, Yanjia street, Changshou District, Chongqing Patentee after: Chongqing Zhongrun New Materials Co.,Ltd. Address before: 401221 room 5-2, No.20, Qixin Avenue, Yanjia street, Changshou District, Chongqing Patentee before: Chongqing Zhong run Chemical Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |