CN215886463U - Membrane module for recovering caprolactam - Google Patents
Membrane module for recovering caprolactam Download PDFInfo
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- CN215886463U CN215886463U CN202122054282.1U CN202122054282U CN215886463U CN 215886463 U CN215886463 U CN 215886463U CN 202122054282 U CN202122054282 U CN 202122054282U CN 215886463 U CN215886463 U CN 215886463U
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Abstract
The utility model discloses a membrane component for recovering caprolactam, which comprises a shell and at least two concentration modules arranged in the shell, wherein one end of the shell is provided with a water inlet, the other end of the shell is provided with a water production port and a concentrated solution recovery port, the water inlet and the concentrated solution recovery port are respectively communicated with a material tank through pipelines, the concentration modules are positioned between the water inlet and the water production port as well as between the water inlet and the concentrated solution recovery port, a buffer cavity is arranged between every two adjacent concentration modules, a pressure compensation device is arranged in the buffer cavity, a pressure sensor matched with the pressure compensation device is arranged on the buffer cavity, and the pressure compensation device is started when the pressure value detected by the pressure sensor is smaller than a set threshold value. The utility model prolongs the service life of the whole, improves the concentration efficiency and reduces the energy consumption.
Description
Technical Field
The utility model relates to a membrane component for recovering caprolactam, belonging to the technical field of waste liquid recovery and treatment.
Background
The polymerization reaction of nylon 6 belongs to equilibrium reaction, so monomer caprolactam and cyclic polymer of about 10% can be produced in the production of nylon 6 slices, especially cyclic dimer can produce serious harm to the polymerization process, in the actual production, pure water and nylon 6 slices need to be used for countercurrent extraction in an extraction tower, unreacted caprolactam and oligomers thereof in the slices enter the pure water, the slices are dried and cooled into finished products after extraction, and the extracted water contains about 10% of caprolactam and oligomers, so that the caprolactam extraction aqueous solution is recycled for avoiding environmental pollution, saving resources and reducing cost. At present, the conventional multi-effect evaporation process is mainly used in the caprolactam extraction water evaporation and concentration process, so that the energy consumption is high and the cost is high.
Disclosure of Invention
The utility model aims to provide a membrane module for recovering caprolactam.
In order to solve the technical problems, the utility model adopts the technical scheme that: a membrane module for recovering caprolactam comprises a shell and at least two concentration modules arranged in the shell, wherein one end of the shell is provided with a water inlet, the other end of the shell is provided with a water production port and a concentrated solution recovery port, the water inlet and the concentrated solution recovery port are respectively communicated with a material tank through pipelines, and the concentration modules are positioned between the water inlet and the water production port as well as between the water production port and the concentrated solution recovery port;
be provided with a cushion chamber between two adjacent concentrated modules, be provided with a pressure compensation device in the cushion chamber, install one on the cushion chamber with pressure compensation device complex pressure sensor, when the pressure value that pressure sensor detected is less than the threshold value of settlement, start pressure compensation device.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, the concentration module is a tubular concentration module or a roll-type concentration module.
2. In the above scheme, a one-way valve is installed on the water inlet pipeline.
3. In the above scheme, the pressure compensation device is an impeller type supercharging device or a diaphragm type supercharging device.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
according to the membrane module for recovering caprolactam, the buffer cavity is arranged between two adjacent concentration modules, the pressure compensation device is arranged in the buffer cavity, and before liquid enters the next concentration module from the buffer cavity, the pressure compensation is increased, the utilization rate of each concentration module is improved, and the service life of the whole membrane module is prolonged; furthermore, a pressure sensor matched with the pressure compensation device is arranged on the buffer cavity, so that the pressure is accurately compensated, the concentration efficiency is improved, and the energy consumption is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a membrane module for recovering caprolactam according to the present invention.
In the above drawings: 1. a housing; 2. a concentration module; 3. a water inlet; 4. a water producing port; 5. a concentrated solution recovery port; 6. a buffer chamber; 7. a one-way valve; 8. a pressure compensation device; 9. a pressure sensor.
Detailed Description
In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.
Example 1: a membrane module for recovering caprolactam comprises a shell 1 and at least two concentration modules 2 arranged in the shell 1, wherein one end of the shell 1 is provided with a water inlet 3, the other end of the shell is provided with a water production port 4 and a concentrated solution recovery port 5, the water inlet 3 and the concentrated solution recovery port 5 are respectively communicated with a material tank through pipelines, and the concentration modules 2 are positioned between the water inlet 3 and the water production port 4 as well as between the water production port 5 and the concentrated solution recovery port 5;
be provided with a cushion chamber 6 between two adjacent concentrated modules 2, be provided with a pressure compensation device 8 in the cushion chamber 6, install one on the cushion chamber 6 with pressure compensation device 8 complex pressure sensor 9, when the pressure value that pressure sensor 9 detected is less than the threshold value of settlement, start pressure compensation device 8.
The concentration module 2 is a tubular concentration module or a roll type concentration module.
The water inlet 3 is provided with a one-way valve 7 on the pipeline.
Example 2: a membrane module for recovering caprolactam comprises a shell 1 and at least two concentration modules 2 arranged in the shell 1, wherein one end of the shell 1 is provided with a water inlet 3, the other end of the shell is provided with a water production port 4 and a concentrated solution recovery port 5, the water inlet 3 and the concentrated solution recovery port 5 are respectively communicated with a material tank through pipelines, and the concentration modules 2 are positioned between the water inlet 3 and the water production port 4 as well as between the water production port 5 and the concentrated solution recovery port 5;
be provided with a cushion chamber 6 between two adjacent concentrated modules 2, be provided with a pressure compensation device 8 in the cushion chamber 6, install one on the cushion chamber 6 with pressure compensation device 8 complex pressure sensor 9, when the pressure value that pressure sensor 9 detected is less than the threshold value of settlement, start pressure compensation device 8.
The concentration module 2 is a tubular concentration module or a roll type concentration module.
The pressure compensation device 8 is an impeller type supercharging device or a diaphragm type supercharging device.
When the device is used, materials enter the concentration modules 2 from the water inlet 3, produced water is discharged after being filtered by the multi-stage concentration modules 2, and pressure compensation is increased before liquid enters the next concentration module 2 from the buffer cavity 6 through the arrangement of the buffer cavity 6 and the pressure compensation device 8 between the adjacent concentration modules 2, so that the attenuation of pressure and the effectiveness of the concentration modules caused by continuous concentration is overcome; further, a pressure sensor 8 matched with the pressure compensation device 9 is installed on the buffer cavity 6, and when the pressure value detected by the pressure sensor 8 is smaller than a set threshold value, the pressure compensation device 9 is started to realize accurate compensation of flow and pressure.
By adopting the membrane component for recovering caprolactam, a buffer cavity is arranged between two adjacent concentration modules, a pressure compensation device is arranged in the buffer cavity, a pressure sensor matched with the pressure compensation device is arranged on the buffer cavity, the attenuation of pressure and the effectiveness of the concentration modules caused by continuous concentration is overcome, the utilization rate of each concentration module is improved while the concentration efficiency is greatly improved, the service life of the whole membrane component is prolonged, the accurate compensation of the pressure is further realized, the concentration efficiency is improved, and the energy consumption is reduced.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (4)
1. A membrane module for caprolactam recovery, characterized in that: the device comprises a shell (1) and at least two concentration modules (2) arranged in the shell (1), wherein one end of the shell (1) is provided with a water inlet (3), the other end of the shell is provided with a water producing port (4) and a concentrated solution recovery port (5), the water inlet (3) and the concentrated solution recovery port (5) are respectively communicated with a material box through pipelines, and the concentration modules (2) are positioned between the water inlet (3) and the water producing port (4) and between the water producing ports (5) and the concentrated solution recovery ports (5);
be provided with a cushion chamber (6) between two adjacent concentrated modules (2), be provided with a pressure compensation device (8) in cushion chamber (6), install on cushion chamber (6) one with pressure compensation device (8) complex pressure sensor (9), when the pressure value that pressure sensor (9) detected is less than the threshold value of settlement, start pressure compensation device (8).
2. The membrane module for caprolactam recovery of claim 1, characterized in that: the concentration module (2) is a tubular concentration module or a roll type concentration module.
3. The membrane module for caprolactam recovery of claim 1, characterized in that: and a one-way valve (7) is arranged on the pipeline of the water inlet (3).
4. The membrane module for caprolactam recovery of claim 1, characterized in that: the pressure compensation device (8) is an impeller type supercharging device or a diaphragm type supercharging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122054282.1U CN215886463U (en) | 2021-08-27 | 2021-08-27 | Membrane module for recovering caprolactam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122054282.1U CN215886463U (en) | 2021-08-27 | 2021-08-27 | Membrane module for recovering caprolactam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215886463U true CN215886463U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122054282.1U Active CN215886463U (en) | 2021-08-27 | 2021-08-27 | Membrane module for recovering caprolactam |
Country Status (1)
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| CN (1) | CN215886463U (en) |
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2021
- 2021-08-27 CN CN202122054282.1U patent/CN215886463U/en active Active
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