A rectifying kettle for rectifying production of propyl aldehyde

Abstract

The utility model belongs to the field of rectifying kettle, concretely relates to a rectifying kettle for propionaldehyde rectification production, including kettle body, the inner side lower part of kettle body is provided with electric heating disc silk, the lower end right side intercommunication of kettle body is provided with the residue discharge port, the top of kettle body is connected with the kettle cover through the flange, the right side wall of kettle cover is fixedly connected with the feeding port, and the feeding port is set to penetrate the kettle cover, the inside top of kettle cover is fixedly connected with the hollow cone, the lower end left side of kettle body is fixedly installed with the circulating pump. The utility model discloses the synergies of hollow cone and the fairing, realizes the efficient condensation and reflux of steam, and cooling water circulates in the hollow cone, and the steam that material is heated after quick condensation rises, and the condensate slides along the cone tip to the fairing, and is guided into the kettle body again through the circulating pump and the connecting pipe and the filter screen, forms the continuous rectification process, and further ensures the purity of material.

Description

Technical Field

[0001] This utility model relates to the field of distillation kettle technology, and in particular to a distillation kettle for the production of propionaldehyde. Background Technology

[0002] In chemical production, distillation is a common separation technique used to purify specific components from liquid mixtures. Propanal, as an important organic chemical intermediate, is widely used in the pharmaceutical, pesticide, and fragrance industries.

[0003] A search revealed a utility model patent with authorization announcement number CN216092284U, which discloses a distillation kettle for propionaldehyde distillation production. The kettle includes a fixed base, a kettle body on top of the fixed base, a sealing cover on top of the kettle body, an exhaust pipe extending through the top of the sealing cover, and a heat insulation cover fitted onto the outer surface of the kettle body. This utility model utilizes the combined use of a heat insulation cover, a first heat-conducting pipe, a first ring, a second ring, an inlet pipe, a connecting sleeve, and an exhaust pipe.

[0004] Traditional distillation equipment often faces the following problems during separation and purification: 1. The straight-tube condenser structure of ordinary distillation kettles often only condenses propanal vapor once, resulting in limited purity; 2. Materials tend to settle at the bottom of the kettle, affecting distillation. Therefore, improvements are needed. Utility Model Content

[0005] This invention provides a distillation kettle for propionaldehyde distillation, which solves the problem that the straight-tube condensation structure of ordinary distillation kettles often results in one-time condensation of propionaldehyde vapor, leading to limited purity in the distillation. It also solves the problem that the material tends to settle at the bottom of the kettle, affecting the distillation process.

[0006] To solve the above-mentioned technical problems, this utility model provides a distillation kettle for propionaldehyde distillation production, including a kettle body. An electric heating coil is provided on the lower inner side of the kettle body. A slag discharge port is connected to the lower right side of the kettle body. A kettle cover is connected to the top of the kettle body via a flange. A feed inlet is fixedly connected to the right side wall of the kettle cover, and the feed inlet penetrates the kettle cover. A hollow cone is fixedly connected to the top inner side of the kettle cover. A circulation pump is fixedly installed on the lower left side of the kettle body. The input end of the circulation pump is connected to the kettle body. A connecting pipe is fixedly connected to the output end of the circulation pump. A connecting nozzle is connected to the end of the connecting pipe. A circulation pipe is fixedly connected to the left side wall of the kettle body, and the circulation pipe penetrates the kettle body. A pressure plate is slidably connected to the inner side of the opening of the circulation pipe located outside the kettle body, and the pressure plate is slidably connected to the inner side of the connecting nozzle.

[0007] Preferably, the top of the hollow cone is connected to an inlet pipe and an outlet pipe, both of which penetrate the vessel lid. The inlet and outlet pipes facilitate the entry and exit of cooling water within the hollow cone.

[0008] Preferably, an electric motor is fixedly installed at the lower middle part of the vessel body. The output shaft of the electric motor passes through the vessel body and is connected to the vessel body via a sealed bearing. A rotating shaft is fixedly connected to the end of the output shaft, and a stirring blade is fixedly connected to the shaft of the rotating shaft. By driving the stirring blade to rotate by the electric motor, material sedimentation at the bottom of the vessel body can be prevented.

[0009] Preferably, a flow guide is fixedly connected to one end of the circulation pipe inside the vessel body, and the position of the flow guide corresponds to the position of the hollow cone. The bottom of the hollow cone is the tip. After the steam encounters cooling on the hollow cone, it slides down through its tip into the flow guide, and then circulates or is discharged.

[0010] Preferably, a gasket is fixedly connected to the inner side of the connecting nozzle, and a filter screen is placed on the upper end of the gasket. The filter screen is slidably connected inside the connecting nozzle and abuts against the pressure plate. The filter screen effectively filters and removes impurities from the materials being distilled in a circulating manner.

[0011] Preferably, a retaining ring is fixedly connected to the body of the circulation pipe, and a spring is fixedly connected between the retaining ring and the pressure plate. The spring allows the elastic force to be applied to the pressure plate.

[0012] Preferably, a protective sleeve is fixedly connected between the retaining ring and the pressure plate, and the protective sleeve is located on the outside of the spring. The protective sleeve provides protection for the spring.

[0013] Compared with related technologies, the distillation kettle for propionaldehyde distillation production provided by this utility model has the following beneficial effects: This invention provides a distillation kettle for propionaldehyde distillation production. Through the synergistic effect of the hollow cone and the guide shroud, efficient condensation and reflux of steam are achieved. Cooling water circulates within the hollow cone, rapidly condensing the rising steam after the material is heated. The condensate slides down the tip of the cone to the guide shroud and is then reintroduced into the kettle body through a circulating pump, connecting pipe, and filter screen, forming a continuous distillation process and further ensuring the purity of the material.

[0014] This utility model provides a distillation kettle for propionaldehyde distillation production. By installing an electric motor at the bottom of the kettle body, and a rotating shaft at the end of the output shaft of the electric motor, with stirring blades installed on the rotating shaft, the stirring blades are driven to rotate by the electric motor, which effectively prevents the material at the bottom of the kettle from settling or coking, and ensures uniform heating. Attached Figure Description

[0015] Figure 1This is a perspective view of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 A schematic diagram of the internal structure of the vessel; Figure 3 For the present utility model Figure 1 A front sectional view; Figure 4 This utility model Figure 3 Enlarged view of point A.

[0016] In the diagram: 1. Kettle body; 101. Electric heating coil; 102. Slag discharge port; 2. Kettle cover; 201. Feed inlet; 202. Hollow cone; 203. Water inlet pipe; 204. Water outlet pipe; 3. Motor; 4. Rotating shaft; 5. Stirring blade; 6. Circulating pump; 7. Connecting pipe; 8. Connecting nozzle; 9. Gasket; 10. Filter screen; 11. Circulating pipe; 12. Flow guide cover; 13. Pressure plate; 14. Baffle ring; 15. Spring; 16. Protective sleeve. Detailed Implementation

[0017] Please see Figure 1 , Figure 2 , Figure 3 A distillation kettle for propionaldehyde distillation production includes a kettle body 1. An electric heating coil 101 is installed on the lower inner side of the kettle body 1. A slag discharge port 102 is connected to the lower right side of the kettle body 1. A kettle cover 2 is connected to the top of the kettle body 1 via a flange. A feed inlet 201 is fixedly connected to the right side wall of the kettle cover 2, and the feed inlet 201 penetrates the kettle cover 2. A hollow cone 202 is fixedly connected to the top inner side of the kettle cover 2. A water inlet pipe 203 and a water outlet pipe 204 are connected to the top of the hollow cone 202, and both the water inlet pipe 203 and the water outlet pipe 204 penetrate the kettle cover 2. The water inlet pipe 203 and the water outlet pipe 204 facilitate the entry and exit of cooling water inside the hollow cone 202.

[0018] Please see Figure 3 An electric motor 3 is fixedly installed at the lower middle part of the vessel body 1. The output shaft of the electric motor 3 passes through the vessel body 1 and is connected to the vessel body 1 through a sealed bearing. A rotating shaft 4 is fixedly connected to the end of the output shaft, and a stirring blade 5 is fixedly connected to the shaft of the rotating shaft 4. The stirring blade 5 is driven to rotate by the electric motor 3, which can prevent the material at the bottom of the vessel body 1 from settling.

[0019] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4A circulation pump 6 is fixedly installed on the lower left side of the vessel body 1. The input end of the circulation pump 6 is connected to the vessel body 1, and the output end of the circulation pump 6 is fixedly connected to a connecting pipe 7. The end of the connecting pipe 7 is connected to a connecting nozzle 8. A circulation pipe 11 is fixedly connected to the left side wall of the vessel body 1, and the circulation pipe 11 penetrates the vessel body 1. A pressure plate 13 is slidably connected to the inner side of the opening at the outer end of the circulation pipe 11, and the pressure plate 13 is slidably connected to the inner side of the connecting nozzle 8. A flow guide shroud 12 is fixedly connected to the inner end of the circulation pipe 11, which corresponds to the position of the hollow cone 202. The bottom of the hollow cone 202 is a pointed part. After the steam encounters cooling on the hollow cone 202, it slides down through its pointed part into the flow guide shroud 12, and then circulates or is discharged. A washer 9 is fixedly connected to the inner side of the connecting nozzle 8. A filter screen 10 is placed on the upper end of the washer 9. The filter screen 10 is slidably connected inside the connecting nozzle 8 and abuts against the pressure plate 13. The filter screen 10 filters and removes impurities from the circulating distillation material. A retaining ring 14 is fixedly connected to the body of the circulation pipe 11. A spring 15 is fixedly connected between the retaining ring 14 and the pressure plate 13. The spring 15 applies elastic force to the pressure plate 13. A protective sleeve 16 is fixedly connected between the retaining ring 14 and the pressure plate 13, and the protective sleeve 16 is located outside the spring 15. The protective sleeve 16 protects the spring 15.

[0020] Working principle: In use, first connect the water inlet pipe 203 and water outlet pipe 204 of the hollow cone 202 to the cooling water source. This allows the hollow cone 202 to maintain a relatively low temperature. After the material is heated by the electric heating coil 101, it generates rising steam. The steam forms condensate at the hollow cone 202. The condensate slides down the tip of the cone to the guide shroud 12 and is reintroduced into the kettle body 1 through the circulation pump 6, connecting pipe 7, and filter screen 10, forming a continuous distillation process. This further ensures the purity of the material. In addition, the stirring blade 5 is driven to rotate by the motor 3, which effectively prevents the material at the bottom of the kettle from settling or coking and ensures heating uniformity. Later, the pressure plate 13 can be retracted into the circulation pipe 11. Then, after connecting the pressure plate 13 to the external pipeline, the distilled material can be taken out.

Claims

1. A distillation vessel for propionaldehyde distillation production, comprising a vessel body (1), characterized in that: An electric heating coil (101) is provided on the lower inner side of the vessel body (1). A slag discharge port (102) is provided on the lower right side of the vessel body (1). A vessel cover (2) is connected to the top of the vessel body (1) via a flange. A feed inlet (201) is fixedly connected to the right side wall of the vessel cover (2), and the feed inlet (201) is provided through the vessel cover (2). A hollow cone (202) is fixedly connected to the top inner side of the vessel cover (2). A circulating pump (6) is fixedly installed on the lower left side of the vessel body (1). The input end of the circulating pump (6) is connected to the inside of the vessel body (1). The output end of the circulating pump (6) is fixedly connected to a connecting pipe (7). The end of the connecting pipe (7) is connected to a connecting nozzle (8). The left side wall of the vessel body (1) is fixedly connected to a circulating pipe (11), and the circulating pipe (11) is set through the vessel body (1). The inner side of the opening of the circulating pipe (11) located outside the vessel body (1) is slidably connected to a pressure plate (13), and the pressure plate (13) is slidably connected to the inner side of the connecting nozzle (8).

2. A distillation kettle for propionaldehyde distillation production according to claim 1, characterized in that: The top of the hollow cone (202) is connected to a water inlet pipe (203) and a water outlet pipe (204), and both the water inlet pipe (203) and the water outlet pipe (204) are connected through the lid (2).

3. A distillation kettle for propionaldehyde distillation production according to claim 1, characterized in that: An electric motor (3) is fixedly installed at the lower middle part of the vessel body (1). The output shaft of the electric motor (3) passes through the vessel body (1) and is connected to the vessel body (1) through a sealed bearing. A rotating shaft (4) is fixedly connected to the end of the output shaft. A stirring blade (5) is fixedly connected to the shaft of the rotating shaft (4).

4. A distillation kettle for propionaldehyde distillation production according to claim 1, characterized in that: The circulation pipe (11) is fixedly connected to a flow guide shroud (12) at one end inside the vessel body (1), and the position of the flow guide shroud (12) corresponds to the position of the hollow cone (202).

5. A distillation kettle for propionaldehyde distillation production according to claim 1, characterized in that: A gasket (9) is fixedly connected to the inner side of the connecting nozzle (8). A filter screen (10) is placed on the upper end of the gasket (9). The filter screen (10) is slidably connected to the inside of the connecting nozzle (8). The filter screen (10) abuts against the pressure plate (13).

6. A distillation kettle for propionaldehyde distillation production according to claim 5, characterized in that: A retaining ring (14) is fixedly connected to the body of the circulation pipe (11), and a spring (15) is fixedly connected between the retaining ring (14) and the pressure plate (13).

7. A distillation kettle for propionaldehyde distillation production according to claim 6, characterized in that: The retaining ring (14) and the pressure plate (13) are fixedly connected by a protective sleeve (16), and the protective sleeve (16) is located outside the spring (15).

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