Constant-temperature organic chemical catalytic reaction kettle

Abstract

A constant-temperature organic chemical catalytic reaction kettle comprises a kettle body and a heating device arranged in the kettle body, the heating device comprises an inlet pipe in the center of the bottom and a flow dividing cavity located at the upper end of the inlet pipe, a backflow cavity is formed over the flow dividing cavity, the periphery of the flow dividing cavity is fixedly communicated with a plurality of circuitous heating pipes, and the inlet pipe penetrates through the side wall of the bottom of the kettle body. The outlet pipe penetrates through the side wall of the top of the kettle body, the heating device is located in heating cavities separated in the kettle body, reaction cavities are formed between the heating cavities, the kettle body at the top of each reaction cavity is provided with a feeding port with a cover, the kettle body at the bottom of each reaction cavity is provided with a discharging pipe, and the heating cavities are filled with superconductive hot oil. According to the reaction kettle, an annular uniform heating structure is formed in the kettle body, so that each reaction cavity can be conveniently and quickly heated by heat of each heating pipe, and the reaction cavities are uniformly heated from outside to inside, so that the high efficiency and uniformity of organic chemical catalytic reaction can be ensured.

Description

Technical Field

[0001] The utility model relates to a reaction kettle, in particular to a constant temperature organic chemical catalytic reaction kettle. Background Art

[0002] Reactors are widely used in the fields of petroleum, chemical industry, rubber, pesticide, dye, medicine and food. They are pressure vessels used to complete processes such as vulcanization, nitration, hydrogenation, hydrocarbonization, polymerization, condensation, etc. Reactors are generally made of carbon manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel) alloys and other composite materials. According to the heating / cooling method, they can be divided into electric heating, hot water heating, heat transfer oil circulation heating, far infrared heating, external (internal) coil heating, jacket cooling and coil cooling in the reactor, etc. The choice of heating method is mainly related to the heating / cooling temperature required for the chemical reaction and the required amount of heat.

[0003] Utility model patent CN220238589U discloses a reactor with uniform constant temperature heating, including an outer reactor body; a limit ring is installed on the outer wall of the outer reactor body, a support ring is installed between the four legs, a roller is installed on the inner side of the support ring through a pin shaft, a gear ring is installed on the outer side of the outer reactor body, a gear is installed on the output shaft of the motor, a fixed rod is installed on the other end of the hoisting rod, a stirring rod and a heating rod are installed on the fixed rod, and a resistance heater is installed on the top of the fixed rod. When the gear rotates, the outer reactor body will be driven to rotate through the gear ring, and the material will be stirred and turned by the stirring rod and the heating rod set on the fixed rod at the same time. However, the structure is complicated, and the transmission structure needs to be continuously rotated and stirred to heat evenly. It is not only costly and noisy during operation, but also once the drive device fails, it will greatly affect the uniformity of heating, and even cause the product to be overheated and affect the product quality. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a constant temperature organic chemical catalytic reaction kettle.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a constant temperature organic chemical catalytic reactor, comprising a reactor body and a heating device arranged in the reactor body, the heating device comprising an inlet pipe at the bottom center and a diversion chamber located at the upper end of the inlet pipe, a reflux chamber is arranged directly above the diversion chamber, a plurality of circuitous heating pipes are fixedly connected to the periphery of the diversion chamber, the upper end of each heating pipe is fixedly connected to one side of the reflux chamber, and the heating pipes are arranged around the axial center of the diversion chamber, an outlet pipe is fixedly connected to the top of the reflux chamber, the inlet pipe passes through the bottom side wall of the reactor body, the outlet pipe passes through the top side wall of the reactor body, the heating device is located in the heating chambers separated in the reactor body, and the reaction chambers are between the heating chambers, the top reactor body of each reaction chamber is respectively provided with a feeding port with a cover, the bottom reactor body of each reaction chamber is respectively provided with a discharge pipe, and the heating chamber is filled with superconducting thermal oil.

[0006] Furthermore, the diversion chamber and the reflux chamber are fixedly connected via a vertical connecting rod.

[0007] Furthermore, the lower end of the inlet pipe is bent to one side and communicated with an external steam supply pipeline through a control valve.

[0008] Furthermore, the bottom support of the kettle body is provided with a plurality of legs, and the bottoms of the legs are fixedly connected by a transverse plate.

[0009] Furthermore, the diversion chamber and the reflux chamber are hollow cylindrical structures with sealed upper and lower ends.

[0010] Furthermore, there are three groups of heating tubes, which are arranged around the axis of the central inlet tube. The heating chamber and the reaction chamber are separated by a heat-conducting metal partition, and three reaction chambers are respectively provided.

[0011] Furthermore, the outer bottom of the heating tube is connected to the diversion cavity, and the inner upper end of the heating tube is connected to the reflux cavity, so that the heating medium entering the heating tube first passes through the bottom and the outer part and then flows out through the inner side.

[0012] Furthermore, the kettle body, the inlet pipe and the outlet pipe are wrapped with heat insulation materials.

[0013] Through the above arrangement, the heating tubes of the utility model are arranged around the center in the kettle body, and the steam, heat transfer oil, etc. are diffused outward through the diversion cavity and then gathered into the reflux cavity after passing through each heating tube, forming an annular uniform heating structure in the kettle body, which can not only avoid excessive concentration of heat in the center, but also ensure that the relatively outer parts of the kettle body are effectively heated, and form all-round contact, which is convenient for quickly dissipating the heat of the steam and heat transfer oil of each heating tube to the surrounding superheat-conducting oil, so that the heating cavity heats each reaction cavity, and the reaction cavity is evenly heated from the outside to the inside, which is more conducive to ensuring the high efficiency and uniformity of organic chemical catalytic reactions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is now further described with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 , 3 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 4 It is a schematic diagram of the internal structure of the kettle body of the utility model;

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the heating device of the utility model. DETAILED DESCRIPTION

[0019] like Figure 1-5 As shown, a constant temperature organic chemical catalytic reactor comprises a reactor body 1 and a heating device arranged in the reactor body 1, the heating device comprises an inlet pipe 2 at the bottom center and a diverter chamber 3 located at the upper end of the inlet pipe 2, a reflux chamber 4 is arranged directly above the diverter chamber 3, a plurality of circuitous heating pipes 5 are fixedly connected to the periphery of the diverter chamber 3, the upper end of each heating pipe 5 is fixedly connected to one side of the reflux chamber 4, and the heating pipes 5 are arranged around the axial center of the diverter chamber 3, an outlet pipe 6 is fixedly connected to the top of the reflux chamber 4, the inlet pipe 2 passes through the bottom side wall of the reactor body 1, and the outlet pipe 6 passes through the top side wall of the reactor body 1, the heating device is located in a heating chamber 7 separated in the reactor body 1, and reaction chambers 8 are between the heating chambers 7, the top reactor body 1 of each reaction chamber 8 is respectively provided with a feeding port 9 with a cover, and the bottom reactor body 1 of each reaction chamber 8 is respectively provided with a discharge pipe 10, and the heating chamber 7 is filled with superconducting thermal oil.

[0020] Specifically: the diverter chamber 3 and the reflux chamber 4 are fixedly connected by a vertical connecting rod 11, the lower end of the inlet pipe 2 is bent to one side and connected to the external steam supply pipeline through a control valve 12, the bottom support of the kettle body 1 has multiple legs 13, and the bottoms of the legs 13 are fixedly connected by a cross plate, the diverter chamber 3 and the reflux chamber 4 are hollow cylindrical structures with closed upper and lower ends, there are three groups of heating tubes 5, and they are arranged around the axis of the central inlet pipe 2, the heating chamber 7 and the reaction chamber 8 are separated by a heat-conducting metal partition, and three reaction chambers 8 are respectively provided.

[0021] In addition, the outer bottom of the heating tube 5 is connected to the diversion chamber 3, and the inner upper end of the heating tube 5 is connected to the reflux chamber 4, so that the heating medium entering the heating tube 5 first passes through the bottom and the outer part and then flows out through the inner side. In this way, the heating tube 5 first heats the outer kettle body 1. Since the cross-section of each reaction chamber 8 of the kettle body 1 is equivalent to a fan shape, the spacing between the outer parts is large. Heating the outer part first is conducive to the dispersion of heat in the outer part, which is more conducive to the uniform diffusion of the overall heat. The outer parts of the kettle body 1, the inlet pipe 2 and the outlet pipe 6 are wrapped with insulation material.

[0022] The working principle of the utility model is as follows: the heating tubes 5 are arranged around the center in the kettle body 1, and the steam, heat transfer oil, etc. are diffused outward through the diversion chamber 3 and then gathered into the reflux chamber 4 after passing through each heating tube 5, forming an annular uniform heating structure in the kettle body 1, which can avoid excessive concentration of heat in the center, and ensure that the inner wall of the kettle body 1 is heated, and form all-round contact, so as to quickly dissipate the heat of the steam and heat transfer oil of each heating tube 5 to the surrounding superheat-conducting oil, so that the heating chamber heats each reaction chamber 8, and the reaction chamber 8 is evenly heated from the outside to the inside, which is more conducive to ensuring the high efficiency and uniformity of the organic chemical catalytic reaction.

[0023] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A constant temperature organic chemical catalytic reaction kettle, comprising a kettle body (1) and a heating device arranged in the kettle body (1), characterized in that: The heating device comprises an inlet pipe (2) at the center of the bottom and a flow distribution chamber (3) located at the upper end of the inlet pipe (2); a reflux chamber (4) is arranged directly above the flow distribution chamber (3); a plurality of circuitous heating pipes (5) are fixedly connected to the periphery of the flow distribution chamber (3); the upper end of each heating pipe (5) is fixedly connected to one side of the reflux chamber (4); the heating pipes (5) are arranged around the center of the axis of the flow distribution chamber (3); an outlet pipe (6) is fixedly connected to the top of the reflux chamber (4); the inlet pipe (2) passes through the bottom side wall of the kettle body (1); the outlet pipe (6) passes through the top side wall of the kettle body (1); the heating device is located in a heating chamber (7) separated in the kettle body (1); reaction chambers (8) are located between the heating chambers (7); the top kettle body (1) of each reaction chamber (8) is respectively provided with a feeding port (9) with a cover; the bottom kettle body (1) of each reaction chamber (8) is respectively provided with a discharge pipe (10); and the heating chamber (7) is filled with superconducting thermal oil.

2. A constant temperature organic chemical catalytic reactor as claimed in claim 1, characterized in that: The diversion chamber (3) and the return chamber (4) are fixedly connected via a vertical connecting rod (11).

3. A constant temperature organic chemical catalytic reactor as claimed in claim 1, characterized in that: The lower end of the inlet pipe (2) is bent to one side and communicated with an external steam supply pipeline via a control valve (12).

4. A constant temperature organic chemical catalytic reactor as claimed in claim 1, characterized in that: The bottom support of the kettle body (1) is provided with a plurality of legs (13), and the bottoms of the legs (13) are fixedly connected by a transverse plate.

5. A constant temperature organic chemical catalytic reactor as claimed in claim 1, characterized in that: The diversion chamber (3) and the reflux chamber (4) are hollow cylindrical structures with sealed upper and lower ends.

6. A constant temperature organic chemical catalytic reactor as claimed in claim 1, characterized in that: There are three groups of heating tubes (5) in total, and they are arranged around the axis center of the central inlet tube (2). The heating chamber (7) and the reaction chamber (8) are separated by a heat-conducting metal partition, and three reaction chambers (8) are respectively provided.

7. A constant temperature organic chemical catalytic reactor as claimed in claim 1, characterized in that: The outer bottom of the heating tube (5) is in communication with the diversion chamber (3), and the inner upper end of the heating tube (5) is in communication with the reflux chamber (4), so that the heating medium entering the heating tube (5) first passes through the bottom and the outer part and then flows out through the inner side.

8. A constant temperature organic chemical catalytic reactor as claimed in claim 1, characterized in that: The kettle body (1), the inlet pipe (2) and the outlet pipe (6) are wrapped with heat insulation material.

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