Tower type layering equipment for acylation reaction

Abstract

The utility model discloses tower type layering equipment for acylation reaction, which comprises a layering tower, and supporting legs are arranged on the bottom end surface of the layering tower; a partition plate is arranged in the middle of an inner cavity of the layering tower and divides the inner cavity into a first layering cavity and a second layering cavity; a feeding hole is formed in the middle of the first layering cavity, and a feeding valve is arranged on the feeding hole; a first liquid level meter is arranged in the first layering cavity; an acyl chloride outlet is formed in the bottom of the first layering cavity; a light phase transfer mechanism is communicated between the upper part of the first layering cavity and the second layering cavity, a second liquid level meter is arranged in the second layering cavity, and a phosphorous acid outlet is formed in the upper part of the second layering cavity; a controller and a timer are arranged on the layering tower, the output ends of the timer, the first liquid level meter and the second liquid level meter are connected with the controller, and the output end of the controller is connected with the feeding valve and the light phase transfer mechanism. The device has the advantages that the automation degree is high, the production efficiency can be greatly improved, and meanwhile, the equipment investment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of acylation reaction, and more specifically to a layering device for acylation reaction. Background Art

[0002] In the process of producing propionyl chloride, isobutyryl chloride, n-butyryl chloride and n-valeryl chloride, phosphorus trichloride is used as the chlorination reagent, and phosphorous acid that is insoluble in acyl chloride will be produced in the production. After the synthesis is completed, it needs to be left to stand for more than 12 hours, and then stratified, and the phosphorous acid is placed in the phosphorous acid storage tank. The acyl chloride is placed in the acyl chloride crude product storage tank, and then placed in the distillation kettle for distillation. Because it takes more than 12 hours to stand for stratification, a large number of intermittent stratification equipment are required. Most of the current stratification equipment uses the density difference of each component to achieve natural stratification, and then extracts. Although it can achieve basic stratification functions, it seriously affects production efficiency and increases investment costs.

[0003] Therefore, there is an urgent need for a tower-type layering device for acylation reaction. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a tower-type layering device for acylation reaction to solve the problems in the background technology.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0006] A tower type layering device for acylation reaction comprises a vertically arranged layering tower, wherein a plurality of legs are arranged on the bottom end surface of the layering tower; a horizontally arranged partition plate is arranged in the middle of the inner cavity of the layering tower, and the partition plate divides the inner cavity into a first layering cavity and a second layering cavity; a feed port is arranged in the middle of the first layering cavity, and a feed valve is arranged on the feed port; a first liquid level gauge is arranged in the first layering cavity, and an acyl chloride outlet is arranged at the bottom of the first layering cavity; a light phase transfer mechanism is connected between the upper part of the first layering cavity and the second layering cavity; a second liquid level gauge is arranged in the second layering cavity, and a phosphorous acid outlet is arranged in the upper part of the second layering cavity; a controller and a timer are arranged on the layering tower, and the output ends of the timer, the first liquid level gauge and the second liquid level gauge are connected to the controller, and the output end of the controller is connected to the feed valve and the light phase transfer mechanism.

[0007] To further optimize the technical solution, a heat-insulating layer is provided on the outer wall of the stratified tower.

[0008] To further optimize the technical solution, a horizontally arranged anti-disturbance plate is provided above the acyl chloride outlet, and the anti-disturbance plate is located below the feed inlet.

[0009] To further optimize the technical solution, a first detection port is set in the middle of the second layered cavity, a second detection port is set in the lower part of the second layered cavity, and valves are set on the first detection port and the second detection port, and the valves are connected to the controller.

[0010] To further optimize the technical solution, the light phase transfer mechanism includes a suction pump arranged outside the stratification tower, and the suction pump is connected to a suction pipe; one end of the suction pipe is connected to the upper part of the first stratification chamber and is provided with a suction ball, and the other end is connected to the upper part of the second stratification chamber, and the controlled end of the suction pump is connected to the controller; a flow meter and a suction valve are provided on the suction pipe, the output end of the flow meter is connected to the controller, and the controlled end of the suction valve is connected to the controller.

[0011] To further optimize the technical solution, four legs are provided.

[0012] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0013] The utility model provides a tower-type layering device for acylation reaction, which uses tower-type layering technology, controls valves and pumps through a controller, and performs two consecutive layers, thereby ensuring the standing and layering time and the layering effect. The utility model has the advantages of high automation, greatly improving production efficiency, and reducing equipment investment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Wherein: 1. layered tower, 2. insulation layer, 3. feed port, 4. feed valve, 5. controller, 6. first liquid level meter, 7. first layered chamber, 8. acyl chloride outlet, 9. second layered chamber, 10. phosphorous acid outlet, 11. light phase transfer mechanism, 111. suction ball, 112. suction pipe, 113. suction pump, 114. suction valve, 115. flow meter, 12. second liquid level meter, 13. timer, 14. first detection port, 15. second detection port, 16. partition plate, 17. anti-disturbance plate, 18. support leg. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] A tower type layering device for acylation reaction, combined with Figure 1As shown, it includes a layered tower 1, an insulation layer 2, a feed port 3, a feed valve 4, a controller 5, a first liquid level meter 6, a first layered chamber 7, an acyl chloride outlet 8, a second layered chamber 9, a phosphorous acid outlet 10, a light phase transfer mechanism 11, a first liquid level meter 6, a second liquid level meter 12, a first detection port 14, a second detection port 15, a partition plate 16, an anti-disturbance plate 17, and a timer 13. The light phase transfer mechanism 11 includes a suction ball 111, a suction pipe 112, a suction pump 113, a suction valve 114, a flow meter 115, and a support leg 18.

[0018] The layered tower 1 is arranged vertically, and four supporting legs 18 are arranged on the bottom end surface of the layered tower 1 .

[0019] A horizontally arranged partition plate 16 is arranged in the middle of the inner cavity of the layered tower 1, and the partition plate 16 divides the inner cavity into a first layered cavity 7 and a second layered cavity 9; a feed port 3 is arranged in the middle of the first layered cavity 7, and a feed valve 4 is arranged on the feed port 3; a first liquid level gauge 6 is arranged in the first layered cavity 7, and an acyl chloride outlet 8 is arranged at the bottom of the first layered cavity 7; a light phase transfer mechanism 11 is connected between the upper part of the first layered cavity 7 and the second layered cavity 9, a second liquid level gauge 12 is arranged in the second layered cavity 9, and a phosphorous acid outlet 10 is arranged at the upper part of the second layered cavity 9; a controller 5 and a timer 13 are arranged on the layered tower 1, and the output ends of the timer 13, the first liquid level gauge 6, and the second liquid level gauge 12 are connected to the controller 5, and the output end of the controller 5 is connected to the feed valve 4 and the light phase transfer mechanism 11.

[0020] A heat-insulating layer 2 is arranged on the outer wall of the layered tower 1 .

[0021] A horizontally arranged anti-disturbance plate 17 is arranged above the acyl chloride outlet 8, and the anti-disturbance plate 17 is located below the feed inlet 3. The anti-disturbance plate 17 reduces the disturbance of the mixed liquid to the separated two phases during the feeding.

[0022] A first detection port 14 is disposed in the middle of the second stratified chamber 9 , and a second detection port 15 is disposed in the lower portion of the second stratified chamber 9 . Valves are disposed on both the first detection port 14 and the second detection port 15 , and the valves are connected to the controller 5 .

[0023] The light phase transfer mechanism 11 includes a suction pump 113 arranged outside the stratification tower 1, and the suction pump 113 is connected to a suction pipe 112; one end of the suction pipe 112 is connected to the upper part of the first stratification chamber 7 and is provided with a suction ball 111, and the other end is connected to the upper part of the second stratification chamber 9, and the controlled end of the suction pump 113 is connected to the controller 5; the suction pipe 112 is provided with a flow meter 115 and a suction valve 114, the output end of the flow meter 115 is connected to the controller 5, and the controlled end of the suction valve 114 is connected to the controller 5.

[0024] When the utility model is actually used, the flow rate and residence time of the mother liquor are calculated, and the time length is set to be greater than 12 hours through the controller. The mixed liquid enters the first stratification chamber of the stratification tower through the feed port, the timer starts timing, the mixed liquid is statically stratified in the first stratification chamber, and the upper light phase is transferred to the second stratification chamber under the action of the suction pump. After the second chamber is statically stratified for 12 hours, samples are taken from the first detection port and the second detection port for detection. If both are detected as phosphorous acid, all phosphorous acid can be taken out from the second detection port. If the second detection port fails to detect, the light phase is discharged through the phosphorous acid outlet, and the heavy phase is discharged from the acyl chloride outlet. The heavy phase in the second stratification chamber is discharged from the second detection port.

Claims

1. A tower type layering device for acylation reaction, characterized in that: The invention comprises a vertically arranged layered tower (1), wherein a plurality of legs (18) are arranged on the bottom end surface of the layered tower (1); a horizontally arranged partition plate (16) is arranged in the middle of the inner cavity of the layered tower (1), and the partition plate (16) divides the inner cavity into a first layered cavity (7) and a second layered cavity (9); a feed port (3) is arranged in the middle of the first layered cavity (7), and a feed valve (4) is arranged on the feed port (3); a first liquid level meter (6) is arranged in the first layered cavity (7), and an acyl chloride outlet (8) is arranged at the bottom of the first layered cavity (7); A light phase transfer mechanism (11) is connected between the upper part of the first stratification chamber (7) and the second stratification chamber (9); a second liquid level gauge (12) is arranged in the second stratification chamber (9), and a phosphorous acid outlet (10) is arranged at the upper part of the second stratification chamber (9); a controller (5) and a timer (13) are arranged on the stratification tower (1); the output ends of the timer (13), the first liquid level gauge (6) and the second liquid level gauge (12) are connected to the controller (5); and the output end of the controller (5) is connected to a feed valve (4) and the light phase transfer mechanism (11).

2. The tower-type layering device for acylation reaction according to claim 1, characterized in that: A heat-insulating layer (2) is provided on the outer wall of the layered tower (1).

3. The tower-type layering device for acylation reaction according to claim 1, characterized in that: A horizontally arranged anti-disturbance plate (17) is arranged above the acyl chloride outlet (8), and the anti-disturbance plate (17) is located below the feed port (3).

4. The tower-type layering device for acylation reaction according to claim 3, characterized in that: A first detection port (14) is arranged in the middle of the second stratified chamber (9), and a second detection port (15) is arranged in the lower part of the second stratified chamber (9). Valves are arranged on the first detection port (14) and the second detection port (15), and the valves are connected to the controller (5).

5. The tower-type layering device for acylation reaction according to claim 4, characterized in that: The light phase transfer mechanism (11) comprises a suction pump (113) arranged outside the stratification tower (1), and the suction pump (113) is connected to a suction pipe (112); one end of the suction pipe (112) is connected to the upper part of the first stratification chamber (7) and is provided with a suction ball (111), and the other end is connected to the upper part of the second stratification chamber (9), and the controlled end of the suction pump (113) is connected to the controller (5); a flow meter (115) and a suction valve (114) are provided on the suction pipe (112), the output end of the flow meter (115) is connected to the controller (5), and the controlled end of the suction valve (114) is connected to the controller (5).

6. The tower-type layering device for acylation reaction according to claim 1, characterized in that: The number of the supporting legs (18) is four.

Images