Propargyl alcohol catalyst continuous separation device

Abstract

The utility model relates to the technical field of chemical equipment, and provides a propargyl alcohol catalyst continuous separation device which comprises a reaction kettle body, a feeding pump and a circulating pump are arranged below the reaction kettle body, a membrane filter is arranged on one side of the reaction kettle body, a collecting tank is arranged on one side of the membrane filter, and the collecting tank is connected with the reaction kettle body. And a backflushing tank is fixedly arranged in the membrane filter. Reaction liquid containing a catalyst is pumped out of the reaction kettle body through the feeding pump and conveyed to the membrane filter, then the reaction liquid is circulated through the circulating pump, at the moment, the membrane filter completes separation of the reaction liquid and the catalyst, and then filtered clear liquid enters the collecting tank through the membrane filter so as to enter the next procedure. And residual liquid containing catalyst particles flows out through the membrane filter and returns to the reaction kettle body through a sixth pipeline for circulation, so that the problems of continuous catalyst separation, good separation effect, contribution to improvement of separation efficiency, reduction of catalyst loss and waste overflow and environmental protection are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, and in particular to a propargyl alcohol catalyst continuous separation device. Background Art

[0002] Propargyl alcohol, also known as 2-propyn-1-ol, is an organic compound with the chemical formula C3H4O. It is a colorless, transparent liquid and is highly toxic. It is used as a rust remover, chemical intermediate, corrosion inhibitor, solvent, stabilizer, etc.

[0003] Patent specification CN212092181U discloses a continuous separation device for hydrogenation reduction catalysts, comprising a continuous hydrogenation reactor, a catalyst settler, a cross-flow membrane filter, and a reaction liquid receiving tank. The continuous hydrogenation reactor is equipped with a feed pipe, a first catalyst recycling pipeline, a second pipeline, and a catalyst aqueous solution output pipeline, which is connected to the catalyst settler. The catalyst settler is connected to the solution output pipeline at its top and to the second pipeline at its bottom, the other end of which is connected to the bottom of the continuous hydrogenation reactor. The other end of the catalyst aqueous solution output pipeline is connected to the cross-flow membrane filter, the top of which is connected to the first catalyst recycling pipeline, the other end of which is connected to the continuous hydrogenation reactor, and the cross-flow membrane filter is also connected to the reaction liquid receiving tank. This device has the advantages of enabling continuous feeding and discharging, continuous separation and reuse of the catalyst from the hydrogenated liquid after the reaction, thereby meeting the requirements of continuous catalytic hydrogenation of CLT acid.

[0004] However, in the implementation of relevant technologies, it was found that the above technical solution had the following problems: as the production capacity expanded during the use of the above device, the original solution became labor-intensive, resulting in poor separation effect, and the exhaust gas was difficult to collect and treat, leading to poisoning of personnel, which not only caused environmental pollution but also affected product quality. Therefore, further improvement is needed. Utility Model Content

[0005] The utility model provides a propargyl alcohol catalyst continuous separation device, which solves the problem of continuous catalyst separation established in the related art, has good separation effect, helps to improve separation efficiency, reduce catalyst loss and waste overflow, and protect the environment.

[0006] The technical solution of the utility model is as follows:

[0007] A propargyl alcohol catalyst continuous separation device comprises a reactor body, a feed pump and a circulation pump are arranged below the reactor body, a membrane filter is arranged on one side of the reactor body, a collection tank is arranged on one side of the membrane filter, and a recoil tank is fixedly arranged inside the membrane filter.

[0008] Preferably, the circulation pump is located on one side of the feed pump.

[0009] Preferably, the feed pump and the circulation pump are located between the reactor body and the membrane filter.

[0010] Preferably, a first pipe is fixedly connected to the lower end of the reactor body, and one end of the first pipe is connected to one side of the circulation pump.

[0011] Preferably, a second pipe is connected to the outer surface of the first pipe, and one end of the second pipe is connected to one side of the feed pump.

[0012] Preferably, the upper end of the feed pump is connected to a third pipe, and one end of the third pipe is connected to one side of the membrane filter.

[0013] Preferably, the upper end of the circulation pump is connected to a fourth pipe, and the upper end of the fourth pipe is communicated with the outer surface of the third pipe.

[0014] Preferably, one side of the membrane filter is connected to a fifth pipe, and one end of the fifth pipe is connected to the upper end of the collection tank.

[0015] Preferably, a sixth pipe is connected to one side of the membrane filter, and one end of the sixth pipe is connected to the upper end of the reactor body.

[0016] Preferably, a diaphragm is fixedly connected to the interior of the membrane filter, one side of the diaphragm is a circulation side, the other side of the diaphragm is a permeation side, and the backwash tank is located inside the permeation side.

[0017] The working principle and beneficial effects of the utility model are as follows:

[0018] The utility model extracts the reaction liquid containing the catalyst from the reactor body through a feed pump and conveys it to the membrane filter, which is then circulated through a circulation pump. At this time, the membrane filter completes the separation of the reaction liquid and the catalyst. The filtered clear liquid then passes through the membrane filter and enters the collection tank to enter the next process, while the residual liquid containing the catalyst particles passes through the membrane filter and returns to the reactor body through the sixth pipe to circulate. When the membrane filter system is in operation, the filtered clear liquid in the recoil tank is instantly pushed out by nitrogen, and the membrane filter is instantaneously backwashed at regular intervals. Since the recoil pressure is higher than the main circulation pressure, the permeate in the recoil tank quickly enters the circulation side from the permeate side under the push of the recoil pressure, thereby removing the contamination layer on the surface of the membrane filter, and the recoil time is adjustable. The liquid lost in the recoil tank is replenished by the filtered clear liquid and maintains a certain liquid level, thereby solving the problem of continuous catalyst separation, having a good separation effect, helping to improve separation efficiency, reducing catalyst loss and waste overflow, and protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] In the figure: 1. Reactor body; 2. First pipeline; 3. Second pipeline; 4. Feed pump; 5. Third pipeline; 6. Circulation pump; 7. Fourth pipeline; 8. Membrane filter; 9. Fifth pipeline; 10. Collection tank; 11. Backflush tank; 12. Sixth pipeline; 13. Diaphragm; 14. Circulation side; 15. Permeation side. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1As shown, this embodiment proposes a propargyl alcohol catalyst continuous separation device, including a reactor body 1, a feed pump 4 and a circulation pump 6 are provided below the reactor body 1, a membrane filter 8 is provided on one side of the reactor body 1, a collection tank 10 is provided on one side of the membrane filter 8, a recoil tank 11 is fixedly provided inside the membrane filter 8, the circulation pump 6 is located on one side of the feed pump 4, the feed pump 4 and the circulation pump 6 are located between the reactor body 1 and the membrane filter 8, the lower end of the reactor body 1 is fixedly connected to a first pipe 2, one end of the first pipe 2 is connected to one side of the circulation pump 6, a second pipe 3 is connected to the outer surface of the first pipe 2, one end of the second pipe 3 is connected to one side of the feed pump 4, the upper end of the feed pump 4 is connected to a third pipe 5, one end of the third pipe 5 is connected to one side of the membrane filter 8, The upper end of the ring pump 6 is connected to the fourth pipe 7, the upper end of the fourth pipe 7 is connected to the outer surface of the third pipe 5, one side of the membrane filter 8 is connected to the fifth pipe 9, one end of the fifth pipe 9 is connected to the upper end of the collecting tank 10, one side of the membrane filter 8 is connected to the sixth pipe 12, one end of the sixth pipe 12 is connected to the upper end of the reactor body 1, the inside of the membrane filter 8 is fixedly connected to the diaphragm 13, one side of the diaphragm 13 is the circulation side 14, and the other side of the diaphragm 13 is the permeation side 15, the recoil tank 11 is located inside the permeation side 15, the feed pump 4 is used to extract the reaction liquid containing the catalyst in the reactor body 1 and transport it to the membrane filter 8, the membrane filter 8 is used to separate the reaction liquid and the catalyst, the collecting tank 10 is used to collect the clear liquid, and the sixth pipe 12 is used to flow the residual liquid containing the catalyst particles into the reactor body 1.

[0024] The working principle and use of the utility model are as follows: when it is necessary to continuously separate the propargyl alcohol catalyst, first the staff needs to place the reaction liquid containing the catalyst inside the reactor body 1, and then the reaction liquid containing the catalyst is extracted from the reactor body 1 through the feed pump 4 and transported to the membrane filter 8, and then circulated through the circulation pump 6. At this time, the membrane filter 8 completes the separation of the reaction liquid and the catalyst, and then the filtered clear liquid passes through the membrane filter 8 into the collection tank 10 to enter the next process, and the residual liquid containing the catalyst particles comes out of the membrane filter 8 and returns to the reactor body 1 through the sixth pipe 12 for circulation. The membrane filter 8 system is operated by nitrogen. The gas instantly pushes out the filtered clear liquid in the recoil tank 11, and the membrane filter 8 is instantaneously backflushed at regular intervals. Since the backflushing pressure is higher than the main circulation pressure, the permeate in the recoil tank 11 quickly enters the circulation side 14 from the permeate side 15 under the push of the backflushing pressure, thereby removing the contamination layer on the surface of the membrane filter 8, and the backflushing time is adjustable. The liquid lost in the recoil tank 11 is replenished by the filtered clear liquid and maintains a certain liquid level. The membrane filter 8 system can chemically regenerate the membrane filter 8 when replacing the catalyst, and can also add a CIP system to the membrane system for regeneration, thereby realizing continuous catalyst separation with good separation effect, helping to improve separation efficiency, reduce catalyst loss and waste overflow, and protect the environment.

[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A propargyl alcohol catalyst continuous separation device, comprising a reactor body (1), characterized in that: A feed pump (4) and a circulation pump (6) are provided below the reactor body (1); a membrane filter (8) is provided on one side of the reactor body (1); a collection tank (10) is provided on one side of the membrane filter (8); and a recoil tank (11) is fixedly provided inside the membrane filter (8); The upper end of the feed pump (4) is connected to a third pipe (5), and one end of the third pipe (5) is connected to one side of the membrane filter (8); The upper end of the circulation pump (6) is connected to a fourth pipe (7), and the upper end of the fourth pipe (7) is connected to the outer surface of the third pipe (5); A sixth pipe (12) is connected to one side of the membrane filter (8), and one end of the sixth pipe (12) is connected to the upper end of the reactor body (1); A diaphragm (13) is fixedly connected to the interior of the membrane filter (8), one side of the diaphragm (13) is a circulation side (14), the other side of the diaphragm (13) is a permeation side (15), and the recoil tank (11) is located inside the permeation side (15).

2. A propargyl alcohol catalyst continuous separation device according to claim 1, characterized in that: The circulation pump (6) is located on one side of the feed pump (4).

3. The propargyl alcohol catalyst continuous separation device according to claim 1, characterized in that: The feed pump (4) and the circulation pump (6) are located between the reactor body (1) and the membrane filter (8).

4. The propargyl alcohol catalyst continuous separation device according to claim 1, characterized in that: The lower end of the reactor body (1) is fixedly connected to a first pipe (2), and one end of the first pipe (2) is connected to one side of a circulation pump (6).

5. The continuous separation device for propargyl alcohol catalyst according to claim 4, characterized in that: A second pipe (3) is connected to the outer surface of the first pipe (2), and one end of the second pipe (3) is connected to one side of the feed pump (4).

6. The continuous separation device for propargyl alcohol catalyst according to claim 1, characterized in that: One side of the membrane filter (8) is connected to a fifth pipe (9), and one end of the fifth pipe (9) is connected to the upper end of the collection tank (10).

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