Temperature control device for preparing trimesoyl chloride

Abstract

The utility model discloses a temperature control device for preparing trimesoyl chloride, which comprises a temperature adjusting machine tank, the upper end of the temperature adjusting machine tank is provided with a temperature sensor, and the temperature adjusting machine tank is hermetically connected with a first hot fluid pump through a first hot fluid pipeline; the temperature adjusting machine tank is connected with a second heat flow pump in a sealed mode through a second heat flow pipeline, and the temperature sensor is electrically connected with the cooling liquid conveying pump, the first heat flow pump and the second heat flow pump. According to the utility model, the temperature of the reaction solution in the temperature regulating machine tank for preparing trimesoyl chloride is monitored in real time, and the cooling liquid pipeline and the hot fluid pipeline are respectively arranged, so that the temperature of the solution in the temperature regulating machine tank can be quickly regulated and controlled, and the reaction temperature is promoted to be constant; meanwhile, flow monitoring control and water pressure adjusting devices are installed on the cooling liquid pipeline and the hot fluid pipeline and used for accurately controlling the flow of conveyed liquid, and therefore the control accuracy of the temperature in the machine tank can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of trimesoyl chloride production, in particular to a temperature control device for preparing trimesoyl chloride. Background Art

[0002] Trimesoyl chloride, also known as 1,3,5-benzene trimesoyl chloride; 1,3,5-benzene trimesoyl trichloride (often abbreviated as: TMC), is a light yellow solid powder at room temperature with a pungent odor. It can be obtained by the reaction of triphosgene and trimesic acid under base catalysis. The melting and boiling points of trimesoyl chloride are 32-38°C and 180°C respectively.

[0003] (16 mmHg) and a density of 2.32 to 3 g / ml. It is a type of acyl chloride. Trimesoyl chloride is a commonly used monomer in the preparation of polyamine reverse osmosis membranes and nanofiltration membranes. It can also be used in seawater desalination, high-purity water purification, and gas separation.

[0004] A Chinese authorized patent document, publication number CN103641706B, relates to a method for preparing trimesoyl chloride. Trimellitic acid and thionyl chloride are used as raw materials, a phase transfer catalyst is added, and a reflux reaction is carried out in a solvent. After the reaction is completed, the solvent and thionyl chloride are first removed by vacuum distillation, and then trimesoyl chloride is obtained by vacuum distillation. The present invention uses trimesoyl acid and thionyl chloride as raw materials under the action of a phase transfer catalyst, adds an appropriate amount of solvent, and refluxes at a certain temperature. Trimellitic chloride is obtained by vacuum distillation and cooling. The present invention has the advantages of mild reaction, simple process, fast reaction speed, high purity, high yield, and the solvent and thionyl chloride can be recycled, and the tail gas can be easily treated, making it easy to industrialize. The solvent and thionyl chloride can be recycled, saving costs. The trimesoyl chloride synthesized by the present invention has a content of more than 99.2%, and the reaction yield reaches 96%.

[0005] The above-mentioned prior art has the problem of inaccurate temperature control during the production and processing of trimesoyl chloride, resulting in poor production and molding effect of trimesoyl chloride. Therefore, it is necessary to develop a temperature control device for preparing trimesoyl chloride to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to provide a temperature control device for preparing trimesoyl chloride, so as to solve the problem that the prior art proposed in the above background technology has inaccurate temperature control during the production and processing of trimesoyl chloride, resulting in poor production and molding effect of trimesoyl chloride.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a temperature control device for preparing trimesoyl chloride, comprising a temperature regulating tank, a temperature sensor installed at the upper end of the temperature regulating tank, an electric heating pipeline installed inside the temperature regulating tank, one end of the temperature regulating tank is sealedly connected to a coolant pump through a coolant pipeline, the coolant pump is respectively connected to a boosting mechanism and a pressure relief mechanism through pipelines, the temperature regulating tank is sealedly connected to a first heat flow pump through a first hot fluid pipeline, the temperature regulating tank is sealedly connected to a second heat flow pump through a second hot fluid pipeline, and the temperature sensor is electrically connected to the coolant pump, the first heat flow pump, and the second heat flow pump.

[0008] Based on the above, a boosting pipeline is installed at one end of the boosting mechanism, and a boosting valve is installed on the boosting pipeline. A pressure relief pipeline is installed at one end of the pressure relief mechanism, and a pressure relief valve is installed on the pressure relief pipeline.

[0009] Based on the above, the boost pipeline and the pressure relief pipeline are both connected to flow meters through pipelines.

[0010] Based on the above, the first heat flow pump and the second heat flow pump are both sealedly connected to the thermal fluid storage tank via a heat flow pipe.

[0011] Based on the above, the first heat flow pump and the second heat flow pump are both connected to flow control valves via flow measuring pipelines.

[0012] Based on the above, a drain pipe is installed at the bottom end of the temperature regulating tank, and a drain switch valve is installed on the drain pipe.

[0013] Based on the above, the temperature sensor extends to the interior of the temperature regulating tank through a temperature measuring probe, and a temperature display screen is provided on the temperature sensor.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model monitors the temperature of the reaction solution inside the temperature regulating tank for preparing trimesoyl chloride in real time, and is respectively provided with a coolant pipeline and a hot fluid pipeline, which can be used to quickly adjust and control the temperature of the solution inside the temperature regulating tank, so as to promote the reaction temperature to be constant. At the same time, flow monitoring and control and water pressure regulating devices are installed on the coolant pipeline and the hot fluid pipeline, which are used to accurately control the flow rate of the conveyed liquid, thereby improving the control accuracy of the temperature inside the tank and further improving the processing and molding quality and effect of the trimesoyl chloride product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the back-end structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the partial installation structure of the utility model.

[0019] In the figure: 1. First heat flow pump; 2. Temperature regulating tank; 3. Electric heating pipeline; 4. Temperature sensor; 5. Coolant pipeline; 6. First heat fluid pipeline; 7. Pressurization mechanism; 8. Pressure relief mechanism; 9. Flow meter; 10. Pressurization pipeline; 11. Pressurization valve; 12. Pressure relief pipeline; 13. Coolant delivery pump; 14. Flow control valve; 15. Flow measuring pipeline; 16. Heat fluid storage tank; 17. Drain pipe; 18. Heat flow pipeline; 19. Second heat flow pump; 20. Second heat fluid pipeline; 21. Pressure relief valve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figure 1-3 The utility model provides an embodiment: a temperature control device for preparing trimesoyl chloride, comprising a temperature regulating tank 2, a temperature sensor 4 is installed on the upper end of the temperature regulating tank 2, an electric heating pipeline 3 is installed inside the temperature regulating tank 2, one end of the temperature regulating tank 2 is sealedly connected to a coolant delivery pump 13 through a coolant pipeline 5, the coolant delivery pump 13 is respectively connected to a pressurizing mechanism 7 and a pressure relief mechanism 8 through pipelines, the temperature regulating tank 2 is sealedly connected to a first heat flow pump 1 through a first hot fluid pipeline 6, the temperature regulating tank 2 is sealedly connected to a second heat flow pump 19 through a second hot fluid pipeline 20, and the temperature sensor 4 is electrically connected to the coolant delivery pump 13, the first heat flow pump 1 and the second heat flow pump 19.

[0022] Furthermore, a boosting pipeline 10 is installed at one end of the boosting mechanism 7 , and a boosting valve 11 is installed on the boosting pipeline 10 . A pressure relief pipeline 12 is installed at one end of the pressure relief mechanism 8 , and a pressure relief valve 21 is installed on the pressure relief pipeline 12 .

[0023] Furthermore, both the pressure boosting pipeline 10 and the pressure relief pipeline 12 are connected to a flow meter 9 through pipelines.

[0024] Furthermore, the first heat flow pump 1 and the second heat flow pump 19 are both sealedly connected to the heat fluid storage tank 16 through the heat flow pipe 18 .

[0025] Furthermore, the first heat flow pump 1 and the second heat flow pump 19 are both connected to a flow control valve 14 via a flow measuring pipeline 15 .

[0026] Furthermore, a drain pipe 17 is installed at the bottom end of the temperature regulating tank 2 , and a drain switch valve is installed on the drain pipe 17 .

[0027] Furthermore, the temperature sensor 4 extends to the interior of the temperature regulating tank 2 through a temperature measuring probe, and a temperature display screen is provided on the temperature sensor 4.

[0028] Working principle: When in use, a solution for preparing trimesoyl chloride is placed inside the temperature regulating tank 2. A temperature sensor 4 is installed on the upper end of the temperature regulating tank 2. The temperature sensor 4 extends to the interior of the temperature regulating tank 2 through a temperature measuring probe. A temperature display screen is provided on the temperature sensor 4. By providing the temperature sensor 4, the temperature of the reaction solution inside the temperature regulating tank 2 is monitored in real time using the temperature measuring probe and displayed in real time on the temperature display screen. When the temperature inside the temperature regulating tank 2 is low, the temperature is adjusted by the temperature regulating tank 2 through the first temperature measuring probe. A hot fluid pipeline 6 is sealed and connected to the first hot fluid pump 1, and the temperature regulating tank 2 is sealed and connected to the second hot fluid pump 19 through the second hot fluid pipeline 20. The first hot fluid pump 1 and the second hot fluid pump 19 are both sealed and connected to the hot fluid storage tank 16 through the hot fluid pipeline 18. The first hot fluid pump 1 and the second hot fluid pump 19 can transport the hot fluid stored in the hot fluid storage tank 16 to the temperature regulating tank 2 through the hot fluid pipeline for heating. The first hot fluid pump 1 and the second hot fluid pump 19 are both connected to the flow control valve 14 through the flow measuring pipeline 15, and a flow control valve 14 is provided. The flow control valve 14 is used to monitor and control the flow of the delivered hot fluid in real time. When the temperature inside the temperature regulating tank 2 is high, one end of the temperature regulating tank 2 is sealed with a coolant delivery pump 13 through a coolant pipeline 5. The coolant delivery pump 13 is connected to a pressurizing mechanism 7 and a pressure relief mechanism 8 through pipelines. The coolant delivery pump 13 can deliver a cooling solution to the interior of the temperature regulating tank 2, which is convenient for cooling the interior of the temperature regulating tank 2. By providing a pressurizing mechanism 7 and a pressure relief mechanism 8, a pressurizing pipeline is installed at one end of the pressurizing mechanism 7. 10. A boost valve 11 is installed on the boost pipeline 10, a pressure relief pipeline 12 is installed at one end of the pressure relief mechanism 8, and a pressure relief valve 21 is installed on the pressure relief pipeline 12. The boost pipeline 10 and the pressure relief pipeline 12 are both connected to a flow meter 9 through a pipeline. The boost valve 11 and the pressure relief valve 21 are used in conjunction with the flow meter 9 to facilitate precise control and adjustment of the water pressure and flow rate of the coolant transported inside the pipeline, thereby ensuring the stability of the transport water pressure, thereby improving the control accuracy of the temperature inside the tank, and further improving the processing and molding quality and effect of the trimesoyl chloride product.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part are connected by conventional means such as mature bolts, rivets, welding, etc. in the existing technology. In addition, the machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature control device for preparing trimesoyl chloride, comprising a temperature regulating tank (2), characterized in that: A temperature sensor (4) is installed at the upper end of the temperature regulating tank (2), an electric heating pipeline (3) is installed inside the temperature regulating tank (2), one end of the temperature regulating tank (2) is sealedly connected to a cooling liquid delivery pump (13) through a cooling liquid pipeline (5), the cooling liquid delivery pump (13) is respectively connected to a pressurizing mechanism (7) and a pressure relief mechanism (8) through pipelines, the temperature regulating tank (2) is sealedly connected to a first heat flow pump (1) through a first hot fluid pipeline (6), the temperature regulating tank (2) is sealedly connected to a second heat flow pump (19) through a second hot fluid pipeline (20), and the temperature sensor (4) is electrically connected to the cooling liquid delivery pump (13), the first heat flow pump (1) and the second heat flow pump (19).

2. A temperature control device for preparing trimesoyl chloride according to claim 1, characterized in that: One end of the pressure boosting mechanism (7) is equipped with a pressure boosting pipeline (10), and a pressure boosting valve (11) is installed on the pressure boosting pipeline (10); one end of the pressure relief mechanism (8) is equipped with a pressure relief pipeline (12), and a pressure relief valve (21) is installed on the pressure relief pipeline (12).

3. A temperature control device for preparing trimesoyl chloride according to claim 2, characterized in that: The boost pipeline (10) and the pressure relief pipeline (12) are both connected to a flow meter (9) via pipelines.

4. A temperature control device for preparing trimesoyl chloride according to claim 1, characterized in that: The first heat flow pump (1) and the second heat flow pump (19) are both sealedly connected to a heat fluid storage tank (16) via a heat flow pipe (18).

5. A temperature control device for preparing trimesoyl chloride according to claim 1, characterized in that: The first heat flow pump (1) and the second heat flow pump (19) are both connected to a flow control valve (14) via a flow measuring pipeline (15).

6. A temperature control device for preparing trimesoyl chloride according to claim 1, characterized in that: A liquid discharge pipe (17) is installed at the bottom end of the temperature regulating tank (2), and a liquid discharge switch valve is installed on the liquid discharge pipe (17).

7. A temperature control device for preparing trimesoyl chloride according to claim 1, characterized in that: The temperature sensor (4) extends to the interior of the temperature regulating tank (2) through a temperature measuring probe, and a temperature display screen is provided on the temperature sensor (4).

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