Temperature control device for methyl acrylate reaction kettle

Abstract

The utility model provides a temperature control device for a methyl acrylate reaction kettle, which is characterized by comprising a kettle body, a surrounding structure and a cooling structure, the surrounding structure is mounted on the outer side of the kettle body, and one side of the surrounding structure is connected with the cooling structure; and by arranging a connecting block and a flowing pipe and further improving a vertical pipe and a transverse pipe, the effects that the cooling process can be more balanced, hot cooling water can be input into the cooling water tank after being effectively cooled, and resources are saved are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction kettle equipment, in particular to a temperature control device for a methyl acrylate reaction kettle. Background Art

[0002] Methyl acrylate is an organic compound. In industrial production, methyl acrylate is often used to prepare polymethyl acrylate (PMA). This polymer is widely used in hydrogels, hydrogels and other fields. In addition, methyl acrylate also has certain applications in the pharmaceutical industry. In the production process of methyl acrylate, acrylic acid and methanol react in the reactor under the action of cation exchange resin as a catalyst. The composition of the reactants and the conversion rate of methanol are closely related to the reaction temperature. After exceeding a certain temperature, the cation exchange resin will cause permanent deactivation, so the reaction temperature must be carried out within a certain range. The higher the temperature, the shorter the time to reach chemical equilibrium, but the production of methyl acrylate by acrylic acid and methanol under catalyst conditions is a slightly exothermic reaction. The higher the temperature, the less conducive it is for the reaction to proceed in the positive direction. Therefore, the comprehensive catalyst activity determines that the design reaction temperature is between 70℃ and 80℃, so that the reaction time will not be too long, the catalyst activity is moderate, and the reaction conversion rate meets the requirements. This puts forward requirements on the temperature control ability of the reaction device.

[0003] A reactor is a container that provides space for chemical reactions. The conditions required in the chemical reaction process, such as reaction temperature, stirring and pressure, can be provided through the intervention of the reactor. In order to solve the problem that most reactors use a large amount of cooling water to cool them down, which is not enough to cool them down until the reaction is completed, the prior art proposes a temperature-controlled reactor. As described in patent CN220143353U, the interlayer is fixed to the lower side of the outer periphery of the reactor body, and multiple groups of annularly distributed cooling water pipes are fixed to the inner side of the interlayer. A drain pipe is provided at the middle and upper part of the right wall of the interlayer, and a water inlet pipe is provided at the middle and lower part of the right wall of the interlayer. A first water pipe is provided at the output end of the drain pipe, and a second water pipe is provided at the input end of the water inlet pipe. The right end of the first water pipe passes through and is fixed to the middle and upper part of the left wall of the heat sink, and the right end of the second water pipe passes through and is fixed to the middle and lower part of the left side of the cooling water tank. A heat dissipation fan is provided on the top of the heat sink, and the second water pipe is provided to the upper and middle part of the left side of the cooling water tank. A booster pump is provided in the middle, a connecting pipe is passed through and fixed in the middle of the top wall of the cooling water tank, the top end of the connecting pipe is passed through and fixed in the middle of the bottom wall of the heat dissipation box, connecting rods are fixed at the four corners of the top wall of the cooling water tank, and the top ends of the connecting rods are respectively fixed at the four corners of the bottom wall of the heat dissipation box, a mounting frame is fixed in the middle of the top wall of the kettle body, a driving motor is fixed on the top of the mounting frame, a stirring assembly is fixed on the output shaft of the driving motor, and the stirring assembly is arranged inside the kettle body, a feeding pipe is passed through and fixed on the left side of the top wall of the kettle body, a thermometer is passed through and fixed on the front side of the middle of the top wall of the kettle body, a discharging pipe is passed through and fixed in the middle of the bottom wall of the kettle body, a valve is provided in the middle of the discharging pipe, and a plurality of groups of annularly distributed supporting legs are fixed on the outer periphery of the bottom wall of the kettle body;

[0004] However, in the utility model, the connecting pipe is arranged at the lower end of the heat dissipation box. Therefore, after the water just enters the heat dissipation box, it enters the cooling water tank at the lower end without sufficient time to dissipate the heat, making it difficult for the cooling water to be effectively cooled, thereby reducing the working efficiency. The cooling water pipe is very close to the kettle body, and the cooling effect of the cooling water is quickly absorbed, making it difficult to cool the gaps between the multiple cooling water pipes, and the cooling effect is uneven.

[0005] Therefore, there is an urgent need for a temperature control device for a methyl acrylate reactor that can make the cooling process more balanced, effectively dissipate the heat of the hot cooling water before inputting it into the cooling water tank, and save resources. Utility Model Content

[0006] In view of the above technical problems, the utility model provides a temperature control device for a methyl acrylate reactor, which can make the cooling process more balanced, can effectively dissipate the heat of hot cooling water and then input it into the cooling water tank, thereby saving resources.

[0007] The utility model is characterized in that it comprises a kettle body, a surrounding structure and a cooling structure. The surrounding structure is installed on the outer side of the kettle body, and one side of the surrounding structure is connected to the cooling structure.

[0008] The surrounding structure is composed of a enclosure, a vertical pipe, a horizontal pipe, a connecting block, a water outlet pipe, a water inlet pipe, and a water inlet pump. A connecting block is welded inside the enclosure, and a horizontal pipe is connected inside the enclosure. The horizontal pipe is circular, and there are multiple horizontal pipes. Vertical pipes are connected between the multiple horizontal pipes. There are multiple vertical pipes, and the upper end of one vertical pipe is connected to the water outlet pipe, and the lower end of the vertical pipe is connected to the water inlet pipe. An inlet pump is installed on the water inlet pipe.

[0009] The cooling structure consists of a cooling water tank, a flow pipe, a support rod, a heat sink, and a fan. The flow pipe is connected to the cooling water tank on the side away from the kettle body. A support rod is welded to the upper end of the cooling water tank. There are multiple support rods. A heat sink is welded to the upper end of the support rod. A fan is installed on the upper end of the heat sink. The heat sink is connected to the side of the flow pipe away from the cooling water tank.

[0010] The beneficial effects of the utility model are:

[0011] The utility model adds a connecting block and a flow pipe, and improves the vertical pipe and the horizontal pipe on the original basis, so as to achieve the effect of making the cooling process more balanced, effectively dissipating the heat of the hot cooling water and then inputting it into the cooling water tank, thereby saving resources.

[0012] The coordination of the horizontal pipe and the vertical pipe can better surround the kettle body for cooling.

[0013] The connecting block allows the horizontal pipe and the vertical pipe to be separated from the kettle body by a certain distance, so that the cooling effect formed by the cold water after entering the horizontal pipe and the vertical pipe can be radiated to the kettle body, reducing the problem of uneven cooling due to the gaps between the horizontal pipes. In addition, there are multiple horizontal pipes, which further reduces the impact of uneven cooling.

[0014] The flow pipe allows the water cooled by the fan at the high water level in the heat sink to flow into the cooling water tank by gravity, so that the heated cooling water can flow into the cooling water tank after sufficient heat dissipation is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of a temperature control device for a methyl acrylate reaction kettle.

[0016] As shown in the figure, 1. kettle body, 21. enclosure, 22. vertical pipe, 23. horizontal pipe, 24. connecting block, 25. outlet pipe, 26. inlet pipe, 27. inlet pump, 31. cooling water tank, 32. flow pipe, 35. support rod, 36. heat sink, 37. fan. DETAILED DESCRIPTION

[0017] Example 1

[0018] The utility model provides a temperature control device for a methyl acrylate reaction kettle, comprising a kettle body 1, a surrounding structure and a cooling structure.

[0019] A connecting block 24 is welded inside the enclosure 21, and a transverse pipe 23 is connected inside the enclosure 21. The transverse pipe 23 is circular, and there are multiple transverse pipes 23. Vertical pipes 22 are connected between the multiple transverse pipes 23. There are multiple vertical pipes 22. The upper end of a vertical pipe 22 is connected to a water outlet pipe 25, and the lower end of the vertical pipe 22 is connected to a water inlet pipe 26. A water inlet pump 27 is installed on the water inlet pipe 26.

[0020] A flow pipe 32 is connected through the cooling water tank 31 on the side away from the kettle body 1, and a support rod 35 is welded to the upper end of the cooling water tank 31. There are multiple support rods 35, and a heat sink 36 is welded to the upper end of the support rod 35. A fan 37 is installed on the upper end of the heat sink 36. The heat sink 36 is connected to the side of the flow pipe 32 away from the cooling water tank 31.

[0021] Example 2

[0022] When the utility model is used, the water inlet pump 27 is turned on, and cooling water enters the horizontal pipe 23 and the vertical pipe 22 in the enclosure 21 from the cooling water tank 31 through the water inlet pipe 26 to cool the kettle body 1 to achieve the effect of controlling the reaction temperature.

[0023] The connecting block 24 allows the horizontal tube 23 and the vertical tube 22 to be separated from the kettle body 1 by a certain distance, so that the cooling effect formed by the cold water after entering the horizontal tube 23 and the vertical tube 22 can be radiated to the kettle body 1, reducing the problem of uneven cooling due to the gaps between the horizontal tubes 23. In addition, there are multiple horizontal tubes 23, which further reduces the impact of uneven cooling and allows the reaction of methyl acrylate to proceed smoothly.

[0024] The cooling water after being cooled is heated, and after the water level rises, it enters the heat sink 36 through the water outlet pipe 25, and is cooled by the fan 37. As the amount of cooling water increases, the water level in the heat sink 36 gradually rises, and after crossing the lower edge of the upper end of the flow pipe 32, it flows into the flow pipe 32, and flows downward into the cooling water tank 31 due to gravity to realize circulation.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A temperature control device for a methyl acrylate reactor, Features: It includes a kettle body, a surrounding structure and a cooling structure, wherein the surrounding structure is installed on the outside of the kettle body, and one side of the surrounding structure is connected to the cooling structure; The cooling structure includes a cooling water tank, a flow pipe, a support rod, a heat sink, and a fan. The flow pipe is connected to one side of the cooling water tank. The upper end of the cooling water tank is welded with a support rod. The upper end of the support rod is welded with a heat sink. The upper end of the heat sink is equipped with a fan. The heat sink is connected to the side of the flow pipe away from the cooling water tank. The surrounding structure includes a enclosure, a vertical pipe, a horizontal pipe, a connecting block, a water outlet pipe, a water inlet pipe, and a water inlet pump. A connecting block is welded inside the enclosure, a horizontal pipe is connected inside the enclosure, and vertical pipes are connected between multiple horizontal pipes. The upper end of one vertical pipe is connected to the water outlet pipe, and the lower end of the vertical pipe is connected to the water inlet pipe. A water inlet pump is installed on the water inlet pipe.

2. A temperature control device for a methyl acrylate reaction kettle according to claim 1, Features: The transverse tube is circular.

Images