Reaction kettle with adjustable discharging temperature

Abstract

The utility model discloses a reaction kettle with adjustable discharge temperature, which belongs to the technical field of reaction kettles, and comprises a kettle body, a heat preservation coil pipe and a first heat exchanger, the bottom of the kettle body is connected with a first discharge pipe, the first discharge pipe is connected with a heat exchange pipe in the first heat exchanger through a discharge pump, and the first heat exchanger is provided with a first medium inlet pipe; a first medium entering from the first medium inlet pipe exchanges heat with materials in the heat exchange pipe on the pipe wall of the heat exchange pipe, the heat exchange pipe is connected with a second discharging pipe and a third discharging pipe, the discharging pump is connected with the inlet end of the heat exchange pipe, the second discharging pipe is connected with the outlet end of the heat exchange pipe, and the third discharging pipe is connected between the inlet end and the outlet end of the heat exchange pipe. Discharged materials of the kettle body are independently heated, so that ineffective heating of the whole materials in the kettle body is avoided, and energy conservation and consumption reduction are realized; the paths of the discharging pipelines are different, so that the heat exchange participation time is different, and the discharging temperature can be controlled; the device is suitable for heating materials with lower liquid levels in the kettle body, and ineffective heating of the kettle body is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of reaction kettles, and in particular relates to a reaction kettle with adjustable discharge temperature. Background Art

[0002] In the chemical production process, a reactor is generally a container that provides reaction conditions and reaction space for chemical reactions. Some existing reactors need to heat the internal materials when they are working. Usually, the reaction temperature of the materials in the reactor is increased by an outer wall jacket or a heating coil. When the reactor needs to partially discharge the materials, in order to reach the discharge temperature, the jacket or heating coil needs to heat the entire material in the reactor so that the materials reach the discharge temperature. The heating amount is large during overall heating, and energy waste is relatively serious. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a reactor with adjustable discharge temperature, which can increase the discharge temperature of the reactor with lower energy consumption.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A reactor with adjustable discharge temperature comprises a reactor body, an insulation coil arranged outside the reactor body and a first heat exchanger connected to the insulation coil, a first discharge pipe is connected to the bottom of the reactor body, the first discharge pipe is connected to the heat exchange pipe in the first heat exchanger through a discharge pump, a first medium inlet pipe connected to the first heat exchanger is provided on the first heat exchanger, the first medium entering the first medium inlet pipe exchanges heat with the material in the heat exchange pipe at the tube wall of the heat exchange pipe, a second discharge pipe and a third discharge pipe connected to the first discharge pipe are connected to the heat exchange pipe, the discharge pump is connected to the inlet end of the heat exchange pipe, the second discharge pipe is connected to the outlet end of the heat exchange pipe, and the third discharge pipe is connected between the inlet end and the outlet end of the heat exchange pipe.

[0006] Furthermore, the first discharge pipe is provided with a first stop valve and a fifth stop valve, the inlet end of the discharge pump is provided with a second stop valve, the second discharge pipe is provided with a third stop valve, and the third discharge pipe is provided with a fourth stop valve.

[0007] Furthermore, the insulation coil includes a first pipe section, an intermediate pipe section connected to the first pipe section, and a second pipe section connected to the intermediate pipe section, the intermediate pipe section is provided with an intermediate valve, the first pipe section is provided with a first outlet pipe, and the second pipe section is provided with a second outlet pipe.

[0008] Furthermore, a heat-insulating sleeve is provided outside the heat-insulating coil.

[0009] Furthermore, the cross-sections of the first pipe segment and the second pipe segment are both semicircular.

[0010] Furthermore, the first heat exchanger is connected to the insulation coil through a first medium outlet pipe.

[0011] Furthermore, the second discharge pipe and the third discharge pipe are connected to the first discharge pipe via a confluence pipe.

[0012] Furthermore, the kettle body is provided with a first communication port and a second communication port, and the kettle body is also provided with a stirring device for stirring the kettle body.

[0013] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0014] 1. By setting up the first heat exchanger, the first medium can be used to heat the discharge of the kettle separately to ensure the discharge temperature, avoid ineffective heating of the entire material in the kettle, and save energy and reduce consumption;

[0015] 2. The first heat exchanger is connected to the second discharge pipe and the third discharge pipe. The discharge pipes have different paths and thus different heat exchange times, so that the temperature of the discharge can be controlled;

[0016] 3. An insulation coil is installed on the outer wall of the kettle body, and an intermediate valve is installed on the insulation coil. The length of the pipe involved in heat exchange in the insulation coil can be adjusted to adapt to the heating of materials with low liquid level in the kettle body, reduce ineffective heating of the kettle body, and save energy and reduce consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the kettle structure of the embodiment;

[0019] Figure 3 It is a schematic diagram of the connection structure of the first heat exchanger in the embodiment. DETAILED DESCRIPTION

[0020] The present invention will be further explained below in conjunction with specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0021] like Figure 1As shown, a reactor with adjustable discharge temperature comprises a reactor body 1, an insulation coil 2, a first heat exchanger 3, a discharge pump 4 and an insulation jacket 7. The reactor body 1 is a vertical reactor. A stirring device 8 is arranged on the reactor body 1. The stirring device 8 adopts an existing paddle stirrer including a stirring motor, a stirring shaft and a stirring paddle. The stirring paddle extends into the reactor body 1. The stirring device 8 is used to stir the reactor body 1. A first connecting port 12 and a second connecting port 13 are arranged on the top of the reactor body 1. The first connecting port 12 has a larger diameter and is used as a manhole and an observation port. The second connecting port 13 is provided with a plurality of second connecting ports. The connecting port 13 has a small diameter and is used as a connection port for external equipment such as a thermometer and a pressure gauge. The bottom of the kettle body 1 is connected to a first discharge pipe 11, which is used for discharging materials. The insulation coil 2 is wound around the outer wall of the kettle body 1, and heat transfer oil circulates inside the kettle body 1 to heat the kettle body 1. The insulation sleeve 7 is insulated on the outside of the kettle body 1 and the insulation coil 2 to improve the insulation effect. The insulation sleeve 7 is composed of an outer frame and an internal insulation material. The outer frame is directly welded to the outer wall of the kettle body 1. The insulation material is an existing organic insulation material such as polyurethane, polystyrene, etc. The discharge pump 4 is connected to the first discharge pipe 11 at one end and to the first heat exchanger 3 at the other end, and is used to transport the material at the first discharge pipe 11 to the first heat exchanger 3 for heat exchange.

[0022] like Figure 1 and Figure 3As shown, a heat exchange tube 5 is arranged in the first heat exchanger 3, and the heat exchange tube 5 is a straight tube (in order to expand the heat exchange area, the heat exchange tube 5 can also be a spiral tube), the inlet end of the discharge pump 4 is connected to the first discharge pipe 11 through the access pipe 41, and the outlet end of the discharge pump 4 is connected to the inlet end of the heat exchange tube 5 through the discharge pipe 33. The heat exchange tube 5 is connected to the second discharge pipe 34 and the third discharge pipe 35, the second discharge pipe 34 is connected to the outlet end of the heat exchange tube 5, and the third discharge pipe 35 is connected to the discharge pipe 33. On the pipeline between the inlet and outlet ends of the heat exchange tube 5, the heat exchange tube 5 is connected to the third discharge pipe 35 at half of its length, and the discharge pump 4 transports the material at the first discharge pipe 11 into the heat exchange tube 5, and then discharges it through the second discharge pipe 34 or the third discharge pipe 35. The second discharge pipe 34 and the third discharge pipe 35 are connected to the first discharge pipe 11 through the confluence pipe 36, and the material discharged from the second discharge pipe 34 or the third discharge pipe 35 returns to the first discharge pipe 11 from the confluence pipe 36. A first stop valve 61 and a fifth stop valve 65 are provided on the first discharge pipe 11. The first stop valve 61 is located upstream of the connection between the access pipe 41 and the first discharge pipe 11, and the fifth stop valve 65 is located downstream of the connection between the access pipe 41 and the first discharge pipe 11 and upstream of the connection between the manifold 36 and the first discharge pipe 11. A second stop valve 62 is provided on the access pipe 41 at the inlet end of the discharge pump 4, a third stop valve 63 is provided on the second discharge pipe 34, a fourth stop valve 64 is provided on the third discharge pipe 35, and a sixth stop valve 66 is provided on the manifold 36. The discharge of the kettle body 1 can be controlled by arranging multiple stop valves. When the first stop valve 61 and the sixth stop valve 66 are opened at the same time, the material is discharged directly from the first discharge pipe 11; when the first stop valve 61 is opened, the sixth stop valve 66 is closed, the second stop valve 62 is opened, the third stop valve 63 or the fourth stop valve 64 is opened, and the sixth stop valve 66 is opened, the material in the kettle body 1 passes through the first heat exchanger 3 and then returns to the first discharge pipe 11 for discharge. The outer side of the first heat exchanger 3 is connected and fixed to the insulation sleeve 7. The first heat exchanger 3 is connected to a first medium inlet pipe 31. The first medium inlet pipe 31 is used to connect the first medium. In this embodiment, the first medium is heat transfer oil. The first medium exchanges heat with the material in the heat exchange tube 5 at the tube wall of the heat exchange tube 5. Since the material can be discharged from the second discharge pipe 34 or the third discharge pipe 35, the length of the heat exchange can be selected. Different heat exchange lengths have different outlet temperatures. The first heat exchanger 3 is connected to the insulation coil 2 through the first medium outlet pipe 32, and the first medium enters the insulation coil 2 through the first medium outlet pipe 32.

[0023] like Figure 1 and Figure 2As shown, the insulation coil 2 includes a first pipe segment 21, an intermediate pipe segment 22 and a second pipe segment 23. The cross-sections of the first pipe segment 21 and the second pipe segment 23 are both semicircular. The first pipe segment 21 and the second pipe segment 23 have the same length. The first medium outlet pipe 32 is connected to the first pipe segment 21, and the first medium outlet pipe 32 is connected to the lowest point of the first pipe segment 21. The first pipe segment 21 is spirally coiled upward on the outer wall of the kettle body 1. The overall position of the second pipe segment 23 is higher than the first pipe segment 21. The second pipe segment 23 is connected to the first pipe segment 21 through the intermediate pipe segment 22. The second pipe segment 23 continues to coil upward on the outer wall of the kettle body 1. The intermediate pipe segment 22 is a circular pipe, and an intermediate valve 24 is provided on the intermediate pipe segment 22. A first outlet pipe 211 is provided on the tail end of the first pipe segment 21, and a second outlet pipe 231 is provided on the tail end of the second pipe segment 23. The intermediate valve 24 can be used to control whether the heat transfer oil enters the second pipe section 23, thereby controlling the length of the pipeline involved in the heat exchange in the insulation coil 2. When there is less material and a lower liquid level in the kettle body 1, the intermediate valve 24 can be closed, and the heat transfer oil is directly discharged from the first outlet pipe 211. When there is more material and a higher liquid level in the kettle body 1, the intermediate valve 24 is opened, the external valve of the first outlet pipe 211 is closed, and the heat transfer oil is discharged from the second outlet pipe 231.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A reactor with adjustable discharge temperature, characterized in that: The invention comprises a kettle body (1), a heat preservation coil (2) arranged outside the kettle body (1), and a first heat exchanger (3) connected to the heat preservation coil (2); a first discharge pipe (11) is connected to the bottom of the kettle body (1); the first discharge pipe (11) is connected to a heat exchange pipe (5) inside the first heat exchanger (3) through a discharge pump (4); a first medium inlet pipe (31) connected to the heat preservation coil (2) is provided on the first heat exchanger (3); the first medium inlet pipe (31) is connected to the heat preservation coil (2); ) enters the heat exchange tube (5) and exchanges heat with the material in the heat exchange tube (5) at the tube wall of the heat exchange tube (5); the heat exchange tube (5) is connected to a second discharge pipe (34) and a third discharge pipe (35) which are in communication with the first discharge pipe (11); the discharge pump (4) is connected to the inlet end of the heat exchange tube (5); the second discharge pipe (34) is connected to the outlet end of the heat exchange tube (5); and the third discharge pipe (35) is connected between the inlet end and the outlet end of the heat exchange tube (5).

2. The reactor with adjustable discharge temperature according to claim 1, characterized in that: The first discharge pipe (11) is provided with a first stop valve (61) and a fifth stop valve (65), the inlet end of the discharge pump (4) is provided with a second stop valve (62), the second discharge pipe (34) is provided with a third stop valve (63), and the third discharge pipe (35) is provided with a fourth stop valve (64).

3. The discharge temperature adjustable reactor according to claim 2, characterized in that: The heat-insulating coil (2) comprises a first pipe section (21), an intermediate pipe section (22) connected to the first pipe section (21), and a second pipe section (23) connected to the intermediate pipe section (22); an intermediate valve (24) is provided on the intermediate pipe section (22); a first outlet pipe (211) is provided on the first pipe section (21); and a second outlet pipe (231) is provided on the second pipe section (23).

4. The reactor with adjustable discharge temperature according to claim 1, characterized in that: The heat-insulating coil (2) is provided with a heat-insulating sleeve (7) outside.

5. The discharge temperature adjustable reactor according to claim 3, characterized in that: The first pipe section (21) and the second pipe section (23) both have semicircular cross-sections.

6. The reactor with adjustable discharge temperature according to claim 1, characterized in that: The first heat exchanger (3) is connected to the thermal insulation coil (2) via a first medium outlet pipe (32).

7. The reactor with adjustable discharge temperature according to claim 2, characterized in that: The second discharge pipe (34) and the third discharge pipe (35) are connected to the first discharge pipe (11) via a conduit (36).

8. The reactor with adjustable discharge temperature according to claim 1, characterized in that: The kettle body (1) is provided with a first communication port (12) and a second communication port (13), and the kettle body (1) is also provided with a stirring device (8) for stirring the kettle body (1).

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