P-fluorotoluene freezing kettle

Abstract

The utility model relates to the technical field of chemical production and processing equipment, in particular to a p-fluorotoluene freezing kettle which comprises a tank body and a freezing kettle body, the top end and the bottom end of the freezing kettle body are fixedly welded with the top end and the bottom end in the tank body respectively, and the top end and the bottom end of the freezing kettle body are fixedly communicated with a feeding port and a discharging port respectively. The feed port and the discharge port both penetrate through the tank body, a bracket is fixedly mounted outside the tank body, a liquid storage tank is arranged on the left side of the bracket, and a refrigerant pipe is fixedly arranged in the tank body and spirally winds the freezing kettle body. According to the p-fluorotoluene freezing kettle, a plurality of bent pipes are designed on the path of the refrigerant pipe, p-fluorotoluene materials at the central position in the kettle body can be synchronously frozen, the heat transfer area is increased, the time needed by freezing is shortened, the freezing efficiency is improved, a chemical pump can be started to convey flushing fluid in the liquid storage tank into the refrigerant pipe, and the flushing fluid in the liquid storage tank is conveyed into the refrigerant pipe. And the interior of the refrigerant pipe is flushed, so that the refrigerant pipe is prevented from being corroded due to long-time residue of refrigerant materials, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production and processing equipment, in particular to a p-fluorotoluene freezing kettle. Background Art

[0002] p-Fluorotoluene is an organic fluorine compound and an important raw material for the production of various organic fluoride products. p-Fluorotoluene appears as a colorless liquid with an aromatic smell. It is soluble in ether, ethanol, benzene and acetone, but insoluble in water. It is widely used in the production process of insecticides, medical drugs, pesticides, fluoroplastics and other products. During the production, preparation and use of p-Fluorotoluene, due to the process and the characteristics of various chemical materials, the state requirements of p-Fluorotoluene are also different. Among them, there is p-Fluorotoluene that needs to be crystalline. To obtain crystalline p-Fluorotoluene, it is basically obtained by low-temperature freezing. There is a certain demand for crystalline p-Fluorotoluene. Therefore, the freezing kettle is one of the main equipment of the freezing process and an important equipment in the chemical industry.

[0003] Most of the existing freezing kettles only have a single freezing function, and basically freeze through the interlayer. They can only freeze from the edge of the freezing kettle gradually inward. The freezing speed is insufficient and the freezing efficiency still has room for improvement. At the same time, after the freezing process, there is a tendency for residual refrigerant materials to remain. The existing freezing kettles basically lack the function of flushing and maintaining the refrigerant pipeline, which indirectly shortens the service life of the refrigeration system.

[0004] In order to solve the above problems, we have made improvements and proposed a para-fluorotoluene freezing kettle. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model provides a para-fluorotoluene freezing kettle, comprising a tank body and a freezing kettle body, wherein the top and bottom ends of the freezing kettle body are respectively fixedly welded to the top and bottom ends inside the tank body, the top and bottom ends of the freezing kettle body are respectively fixedly connected and provided with a feed inlet and a discharge port, the feed inlet and the discharge port both pass through the tank body, a bracket is fixedly installed outside the tank body, a liquid storage tank is arranged on the left side of the bracket, a refrigerant pipe is fixedly arranged inside the tank body, and the refrigerant pipe is spirally wound around the freezing kettle body.

[0007] As a preferred technical solution of the utility model, a chemical pump is fixedly installed at the bottom of the bracket by bolts, the left side of the chemical pump is connected to the liquid storage tank by a pipeline, the other end of the chemical pump is fixedly installed with a flushing liquid delivery pipe by bolts, and the top end of the flushing liquid delivery pipe is fixedly connected with a first three-way valve.

[0008] As a preferred technical solution of the utility model, the bottom end of the refrigerant pipe passes through the tank body and is fixedly connected to the first three-way valve, and the right end of the first three-way valve is fixedly connected and installed with a refrigerant delivery pipe.

[0009] As a preferred technical solution of the utility model, the inner wall of the freezing kettle body is provided with protective tubes, and the protective tubes are arranged in three rows at equal intervals around the inner wall of the freezing kettle body, and the spacing of each row of protective tubes in the vertical direction is equal.

[0010] As a preferred technical solution of the utility model, a refrigerant elbow is fixedly installed in each of the protective tubes, and the left and right ends of the refrigerant elbow pass through the freezing kettle body and are fixedly connected to the refrigerant pipe.

[0011] As a preferred technical solution of the utility model, the top end of the refrigerant pipe is fixedly connected to a second three-way valve, the right end of the second three-way valve is fixedly connected to a refrigerant output pipe, and the top of the second three-way valve is fixedly connected to a flushing liquid output pipe.

[0012] The beneficial effects of the utility model are as follows: the parafluorotoluene freezing kettle adopts a surrounding refrigerant pipeline to cool and freeze the materials in the freezing kettle body, and a plurality of elbows are designed on the route of the refrigerant pipe, and the elbows are all extended into the freezing kettle body, so that the parafluorotoluene material in the center position of the kettle body can be synchronously frozen, the heat transfer area is increased, the time required for freezing is reduced, and the freezing efficiency is improved. After use, the chemical pump can also be started to transport the flushing liquid in the liquid storage tank to the refrigerant pipe to flush the inside of the refrigerant pipe, so as to prevent the refrigerant material from remaining for a long time and then corroding the refrigerant pipe, thereby extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic structural diagram of a para-fluorotoluene freezing kettle of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of a tank body of a para-fluorotoluene freezing kettle of the utility model;

[0016] Figure 3 It is a schematic diagram of a top view cross-sectional structure of a freezing kettle body of a para-fluorotoluene freezing kettle of the utility model;

[0017] In the figure: 1. tank body; 101. freezing kettle body; 102. protective pipe; 2. bracket; 3. feed inlet; 4. discharge outlet; 5. liquid storage tank; 6. chemical pump; 7. flushing liquid delivery pipe; 8. first three-way valve; 9. refrigerant delivery pipe; 10. refrigerant pipe; 11. refrigerant elbow; 12. second three-way valve; 13. refrigerant output pipe; 14. flushing liquid output pipe. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] Example: Figure 1-3 As shown, a parafluorotoluene freezing kettle comprises a tank body 1 and a freezing kettle body 101, the top and bottom of the freezing kettle body 101 are respectively fixedly welded to the top and bottom of the tank body 1, a sandwich space is formed between the freezing kettle body 101 and the tank body 1, the top and bottom of the freezing kettle body 101 are respectively fixedly connected and provided with a feed port 3 and a discharge port 4, the feed port 3 and the discharge port 4 both pass through the tank body 1, and parafluorotoluene material can be put in or discharged through the feed port 3 and the discharge port 4, a bracket 2 is fixedly installed on the outside of the tank body 1, a liquid storage tank 5 is arranged on the left side of the bracket 2, and the liquid storage tank 5 is filled with a flushing liquid that can flush the refrigerant material, a refrigerant pipe 10 is fixedly arranged inside the tank body 1, and the refrigerant pipe 10 is spirally wound around the freezing kettle body 101.

[0020] A chemical pump 6 is fixedly installed at the bottom of the bracket 2 by bolts, and the left side of the chemical pump 6 is connected to the liquid storage tank 5 by a pipeline. The other end of the chemical pump 6 is fixedly connected and installed with a flushing liquid delivery pipe 7 by bolts. The top of the flushing liquid delivery pipe 7 is fixedly connected and provided with a first three-way valve 8. The bottom end of the refrigerant pipe 10 passes through the tank body 1 and is fixedly connected to the first three-way valve 8. The right end of the first three-way valve 8 is fixedly connected and installed with a refrigerant delivery pipe 9. The first three-way valve 8 is adjusted to connect the refrigerant delivery pipe 9 and the refrigerant pipe 10. After starting the cooling equipment, the refrigerant is input into the refrigerant pipe 10 through the refrigerant delivery pipe 9 to cool and freeze the freezing kettle body 101. When the first three-way valve 8 is controlled to connect the refrigerant pipe 10 and the flushing liquid delivery pipe 7, the chemical pump 6 is started to deliver the flushing liquid into the refrigerant pipe 10 for flushing to prevent residual refrigerant material in the refrigerant pipe 10.

[0021] A protective tube 102 is provided on the inner wall of the freezing kettle body 101. The protective tube 102 is arranged in three rows at equal intervals around the inner wall of the freezing kettle body 101. The spacing of each row of protective tubes 102 in the vertical direction is equal. A refrigerant bent pipe 11 is fixedly installed in each protective tube 102. The left and right ends of the refrigerant bent pipe 11 pass through the freezing kettle body 101 and are fixedly connected with the refrigerant pipe 10. When the refrigerant in the refrigerant pipe 10 passes through these refrigerant bent pipes 11, the material inside the freezing kettle body 101 can be further frozen, thereby effectively increasing the heat transfer area and improving the freezing efficiency.

[0022] The top end of the refrigerant pipe 10 is fixedly connected to a second three-way valve 12, the right end of the second three-way valve 12 is fixedly connected to a refrigerant output pipe 13, and the top of the second three-way valve 12 is fixedly connected to a flushing liquid output pipe 14. The connection route of the refrigerant pipe 10 is changed by adjusting and controlling the second three-way valve 12. The refrigerant discharge is connected to the refrigerant output pipe 13, and the flushing liquid discharge is connected to the flushing liquid output pipe 14.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A parafluorotoluene freezing kettle, comprising a tank body (1) and a freezing kettle body (101), characterized in that: The top and bottom ends of the freezing kettle body (101) are respectively fixedly welded to the top and bottom ends inside the tank body (1); the top and bottom ends of the freezing kettle body (101) are respectively fixedly connected and provided with a feed inlet (3) and a discharge port (4); both the feed inlet (3) and the discharge port (4) pass through the tank body (1); a bracket (2) is fixedly installed outside the tank body (1); a liquid storage tank (5) is provided on the left side of the bracket (2); a refrigerant pipe (10) is fixedly provided inside the tank body (1); and the refrigerant pipe (10) is spirally wound around the freezing kettle body (101).

2. A parafluorotoluene freezing kettle according to claim 1, characterized in that, A chemical pump (6) is fixedly installed at the bottom of the bracket (2) by means of bolts, the left side of the chemical pump (6) is connected to the liquid storage tank (5) by means of a pipeline, the other end of the chemical pump (6) is fixedly connected to a flushing liquid delivery pipe (7) by means of bolts, and the top end of the flushing liquid delivery pipe (7) is fixedly connected to a first three-way valve (8).

3. A parafluorotoluene freezing kettle according to claim 2, characterized in that, The bottom end of the refrigerant pipe (10) passes through the tank body (1) and is fixedly connected to the first three-way valve (8), and the right end of the first three-way valve (8) is fixedly connected and installed with a refrigerant delivery pipe (9).

4. A parafluorotoluene freezing kettle according to claim 1, characterized in that, The inner wall of the freezing kettle body (101) is provided with protective tubes (102), and the protective tubes (102) are arranged in three rows at equal intervals around the inner wall of the freezing kettle body (101), and the spacing of the protective tubes (102) in each row in the vertical direction is equal.

5. A parafluorotoluene freezing kettle according to claim 4, characterized in that, A refrigerant bend pipe (11) is fixedly installed in each of the protection pipes (102), and the left and right ends of the refrigerant bend pipe (11) pass through the freezing kettle body (101) and are fixedly connected to the refrigerant pipe (10).

6. A parafluorotoluene freezing kettle according to claim 1, characterized in that: The top end of the refrigerant pipe (10) is fixedly connected to a second three-way valve (12), the right end of the second three-way valve (12) is fixedly connected to a refrigerant output pipe (13), and the top of the second three-way valve (12) is fixedly connected to a flushing liquid output pipe (14).

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