Reactor equipment for preparing trichloropropane

Abstract

The utility model discloses reactor equipment for preparing trichloropropane, which comprises a reaction tank, a thermal insulation sleeve is sleeved on the surface of the outer wall of the reaction tank, and the thermal insulation sleeve is of an annular structure; a heat exchange coil pipe arranged from top to bottom is embedded in the heat preservation sleeve; a cooling box is fixedly arranged on the side face of the heat preservation sleeve. The top end of the cooling box communicates with a water outlet pipe; the top end of the water outlet pipe is communicated with one end of the heat exchange coil pipe; according to the reaction tank cooling device, the reaction tank can be rapidly cooled, the phenomena of excessive side reaction products, low trichloropropane purity, low yield and the like caused by too high temperature are reduced, potential safety hazards caused by too high temperature of the tank body are prevented, meanwhile, cyclic utilization of cooling liquid is guaranteed, the overall cooling cost is reduced, and the service life of the reaction tank is prolonged. Therefore, the preparation cost of trichloropropane is reduced; the device is simple in structure, convenient to operate and worthy of popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of trichloropropane preparation, and in particular to a reactor device for preparing trichloropropane. Background Art

[0002] At present, trichloropropane is a chemical reagent commonly used in industry, a colorless flammable liquid. It is slightly soluble in water and can dissolve oil, fat, wax, chlorinated rubber and most resins. It is mainly used to produce 2,3-dichloropropylene, and is also a good solvent. It can also be used as a raw material for the pesticide chlormequat or avena cava 1, and can also be used as an intermediate for new materials.

[0003] Since chlorine needs to be introduced into trichloropropane during its production, and the temperature of the reaction tank cannot be well cooled when chlorine is introduced, it is easy to cause excessive side reaction products, low purity of trichloropropane and low yield. At the same time, impurities are mixed in the chlorine gas delivery process, and the purity of trichloropropane preparation is easily reduced if no secondary impurity removal is performed. Therefore, we propose a reactor device for preparing trichloropropane. Utility Model Content

[0004] The utility model aims to provide a reactor device for preparing trichloropropane to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reactor device for preparing trichloropropane, which includes a reaction tank, the outer wall surface of the reaction tank is sheathed with a heat-insulating sleeve, and the heat-insulating sleeve is annular in structure; the heat-insulating sleeve is embedded with a heat-exchanging coil arranged from top to bottom; a cooling box is fixedly arranged on the side of the heat-insulating sleeve; the top of the cooling box is connected with a water outlet pipe; the top of the water outlet pipe is connected with one end of the heat-exchanging coil; the bottom of the cooling box is connected with a reflux pipe; one end of the reflux pipe is connected with the other end of the heat-exchanging coil; a semiconductor refrigeration sheet is embedded on the front of the cooling box; a stirring mechanism is arranged in the reaction tank; a chlorine gas storage tank is arranged on the top of the reaction tank;

[0006] A sealing partition is horizontally arranged inside the chlorine storage tank; an inclined filter screen is arranged on the sealing partition; a telescopic rod is fixedly installed on the top of one side of the filter screen; a scraper is arranged on the output end of the telescopic rod; and a drainage pipe with a valve is arranged on one side of the sealing partition located on the filter screen.

[0007] Preferably, an air inlet pipe and an air outlet pipe are respectively provided on the left and right sides of the chlorine gas storage tank, and the air outlet pipe is sealed and connected to the reaction tank; valves are provided on the air inlet pipe and the air outlet pipe.

[0008] Preferably, there are at least two filter screens, which are arranged in parallel in the chlorine storage tank.

[0009] Preferably, the scraper is in contact with the surface of the filter screen; and the telescopic rod is an electric telescopic rod.

[0010] Preferably, the stirring mechanism comprises a motor and a stirring shaft arranged at the bottom end of the reaction tank; the output end of the motor is transmission-connected to the stirring shaft, and a U-shaped stirring blade is fixedly arranged on the outer wall of the lower end of the stirring shaft.

[0011] Preferably, a micro water pump in communication with the water outlet pipe is fixedly installed in the middle portion of the water outlet pipe.

[0012] Preferably, a cooling fan is fixedly installed on the outer side of the cooling box; the air outlet of the cooling fan corresponds to the position of the semiconductor refrigeration plate, and a gap is provided between the semiconductor refrigeration plate and the cooling fan.

[0013] Preferably, the outer wall of the thermal insulation sleeve is provided with a heat insulation layer; the inner wall of the thermal insulation sleeve is provided with a heat conductive ring, and the heat conductive ring is in contact with the outer wall of the reaction tank.

[0014] Preferably, a one-way check valve is provided on the reflux pipe.

[0015] Beneficial effects: Compared with the prior art, the utility model has the following beneficial effects: by arranging the heat preservation sleeve, the heat exchange coil, the cooling box, the micro water pump, the water outlet pipe, the reflux pipe, the cooling fan and the semiconductor refrigeration sheet, the reaction tank can be quickly cooled down, the excessive side reaction products caused by the high temperature, the low purity of trichloropropane and the low yield and the like are reduced, and the potential safety hazard caused by the high temperature of the tank body is prevented, while the recycling of the coolant is ensured, the overall cooling cost is reduced, and thus the preparation cost of trichloropropane is reduced; by arranging the chlorine storage tank, the sealing partition, the filter screen, the telescopic rod, the scraper, the impurity discharge pipe, the air inlet pipe and the air outlet pipe, the treated chlorine can be secondary impurity-removed, the purity of the trichloropropane preparation is improved, the particulate impurities in the chlorine are filtered through the filter screen, the impurities on the filter screen are scraped off by arranging the scraper and the telescopic rod, the impurities are discharged through the impurity discharge pipe, the impurities are avoided from accumulating, and the filtering quality and efficiency of the chlorine are ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a schematic diagram of the overall structure of a reactor device for preparing trichloropropane.

[0017] Figure 2 The utility model provides a schematic diagram of the side structure of a reactor device for preparing trichloropropane.

[0018] Figure 3The utility model discloses a schematic diagram of the internal structure of a chlorine gas storage tank of a reactor device for preparing trichloropropane.

[0019] Figure 4 The utility model discloses a schematic diagram of a top view and a cross-sectional structure of a heat preservation jacket of a reactor device for preparing trichloropropane.

[0020] In the accompanying drawings: 1-reaction tank, 2-insulation jacket, 3-heat exchange coil, 4-cooling box, 5-micro water pump, 6-water outlet pipe, 7-reflux pipe, 8-cooling fan, 9-semiconductor refrigeration plate, 10-chlorine storage tank, 11-sealed partition, 12-filter, 13-telescopic rod, 14-scraper, 15-drain pipe, 16-inlet pipe, 17-outlet pipe, 18-motor, 19-stirring shaft, 20-U-shaped stirring blade, 21-insulation layer, 22-thermal conduction ring. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Example

[0024] Please refer to the drawings of the specification. In the embodiment of the utility model, a reactor device for preparing trichloropropane includes a reaction tank 1. The outer wall surface of the reaction tank 1 is sheathed with a heat-insulating sleeve 2, and the heat-insulating sleeve 2 is annular in structure; a heat-exchange coil 3 arranged from top to bottom is embedded in the heat-insulating sleeve 2; a cooling box 4 is fixedly arranged on the side of the heat-insulating sleeve 2; the top of the cooling box 4 is connected to a water outlet pipe 6; the top of the water outlet pipe 6 is connected to one end of the heat-exchange coil 3; the bottom of the cooling box 4 is connected to a reflux pipe 7; one end of the reflux pipe 7 is connected to the heat-exchange coil 3; The other end of the coil 3 is connected; a semiconductor refrigeration sheet 8 is embedded in the front of the cooling box 4; a stirring mechanism is provided in the reaction tank 1; a chlorine gas storage tank 10 is provided at the top of the reaction tank 1; a sealing partition 11 is horizontally provided inside the chlorine gas storage tank 10; an inclined filter screen 12 is provided on the sealing partition 11; a telescopic rod 13 is fixedly installed on the top of one side of the filter screen 12; a scraper 14 is provided at the output end of the telescopic rod 13; a drainage pipe 15 with a valve is provided on the sealing partition 11 on one side of the filter screen 12, and the chlorine gas storage The left and right sides of the tank 10 are respectively provided with an air inlet pipe 16 and an air outlet pipe 17, and the air outlet pipe 17 is sealed and connected with the reaction tank 1; valves are provided on the air inlet pipe 16 and the air outlet pipe 17, the number of the filter screen 12 is at least two, and the two filter screens 12 are arranged in parallel in the chlorine storage tank 10, and the scraper 14 is in contact with the surface of the filter screen 12; the telescopic rod 13 is an electric telescopic rod, and the stirring mechanism includes a motor 18 and a stirring shaft 19 arranged at the bottom end of the reaction tank 1; the output end of the motor 18 is connected to the stirring shaft 19 in a transmission manner. A U-shaped stirring blade 20 is fixedly provided on the outer wall of the lower end of the mixing shaft 19, a micro water pump 5 connected to the water outlet pipe 6 is fixedly installed in the middle of the water outlet pipe 6, and a cooling fan 8 is fixedly installed on the outer side of the cooling box 4; the air outlet of the cooling fan 8 corresponds to the position of the semiconductor refrigeration plate 8, and a gap is provided between the semiconductor refrigeration plate 8 and the cooling fan 8, the outer wall of the insulation sleeve 2 is provided with a heat insulation layer 21; the inner wall of the insulation sleeve 2 is provided with a heat conductive ring 22, and the heat conductive ring 22 is in contact with the outer wall of the reaction tank 1, and the reflux pipe 7 is provided with a one-way check valve.

[0025] Usage process: When in use, first open the cooling system of the reaction tank, then open the primary reaction 3-chloropropylene feed pump, and then open the valve of the air inlet pipe 16 on the chlorine storage tank 10. The chlorine enters the chlorine storage tank 10 through the inlet pipe 16. At this time, close the valve on the impurity discharge pipe 15, and filter the impurity particles in the treated chlorine again through the filter screen 12. When dealing with impurities, it is necessary to stop the chlorine injection, and discharge all the chlorine in the chlorine storage tank 10 into the reaction tank 1, start the telescopic rod 13, and the telescopic rod 13 drives the scraper 14 moves up and down along the surface of the filter screen 12 to scrape off the impurities attached to the filter screen 12. The impurities are discharged from the chlorine storage tank 10 through the impurity discharge pipe 15, and the filtered impurity particles are gathered on the surface of the filter screen 12. After chlorine is filtered, it is discharged into the reaction tank 1 through the outlet pipe 17; by adjusting the flow rate of the flow meter, the flow rate is controlled to 450 kg, the reflux and discharge are controlled, and the secondary reaction is entered, and then the tertiary reaction is entered to obtain qualified products. When the chlorine and propane react, the stirring shaft and the stirring blade can be used to slightly rotate and stir to increase the In order to increase the reaction speed and speed up the preparation efficiency of trichloropropane, when the reaction tank needs to be cooled, the micro water pump 5 is started, and the micro water pump 5 draws the coolant in the cooling box 4 into the heat exchange coil 3 through the outlet pipe 6. The heat of the reaction tank 1 is transferred to the heat insulation sleeve 2 through the heat conduction ring 22. When the coolant in the heat exchange coil 3 circulates, the heat inside it can be cooled and exchanged, so as to cool the reaction tank 1 in time. The coolant after heat exchange flows back to the cooling box 4 through the reflux pipe 7, and the semiconductor refrigeration sheet 9 is started. The semiconductor refrigeration sheet 9 cools the reaction tank 1. The end face is located on the inner side of the cooling box 4, and the semiconductor refrigeration sheet 9 quickly cools the coolant, and the remaining heat is dissipated through the end face. The end face is cooled from the side by the cooling fan 8, which can achieve rapid cooling of the reaction tank, reduce the excessive side reaction products caused by excessive temperature, low purity and low yield of trichloropropane, and prevent the safety hazards caused by excessive tank temperature. At the same time, it ensures the recycling of the coolant, reduces the overall cooling cost, and thus reduces the preparation cost of trichloropropane.

[0026] In the above process, the reaction tank can be quickly cooled down by setting the insulation sleeve, heat exchange coil, cooling box, micro water pump, water outlet pipe, reflux pipe, cooling fan and semiconductor refrigeration sheet, which reduces the occurrence of excessive side reaction products, low purity and low yield of trichloropropane caused by excessive temperature, and prevents the potential safety hazards caused by excessive temperature of the tank body. At the same time, the recycling of the coolant is guaranteed, and the overall cooling cost is reduced, thereby reducing the preparation cost of trichloropropane. By setting the chlorine storage tank, sealing partition, filter screen, telescopic rod, scraper, impurity discharge pipe, air inlet pipe and air outlet pipe, the treated chlorine can be secondary impurity-removed to improve the purity of trichloropropane preparation, the particulate impurities in the chlorine are filtered by the filter screen, the impurities on the filter screen are scraped off by setting the scraper and telescopic rod, and the impurities are discharged through the impurity discharge pipe to avoid impurity accumulation, thereby ensuring the filtering quality and efficiency of the chlorine. The present application has a simple structure, strong practicality, simple operation and is worthy of promotion.

[0027] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A reactor device for preparing trichloropropane, characterized in that: It comprises a reaction tank, the outer wall surface of which is sheathed with a heat-insulating sleeve, and the heat-insulating sleeve is annular in structure; a heat-exchanging coil arranged from top to bottom is embedded in the heat-insulating sleeve; a cooling box is fixedly arranged on the side of the heat-insulating sleeve; a water outlet pipe is connected to the top of the cooling box; the top of the water outlet pipe is connected to one end of the heat-exchanging coil; a return pipe is connected to the bottom of the cooling box; one end of the return pipe is connected to the other end of the heat-exchanging coil; a semiconductor refrigeration sheet is embedded in the front of the cooling box; a stirring mechanism is arranged in the reaction tank; a chlorine gas storage tank is arranged at the top of the reaction tank; A sealing partition is horizontally arranged inside the chlorine storage tank; an inclined filter screen is arranged on the sealing partition; a telescopic rod is fixedly installed on the top of one side of the filter screen; a scraper is arranged on the output end of the telescopic rod; and a drainage pipe with a valve is arranged on one side of the sealing partition located on the filter screen.

2. A reactor device for preparing trichloropropane according to claim 1, characterized in that: An air inlet pipe and an air outlet pipe are respectively arranged on the left and right sides of the chlorine gas storage tank, and the air outlet pipe is sealed and connected with the reaction tank; valves are arranged on the air inlet pipe and the air outlet pipe.

3. A reactor device for preparing trichloropropane according to claim 1, characterized in that: There are at least two filter screens, which are arranged in parallel in the chlorine storage tank.

4. A reactor device for preparing trichloropropane according to claim 1, characterized in that: The scraper is in contact with the surface of the filter screen; and the telescopic rod is an electric telescopic rod.

5. A reactor device for preparing trichloropropane according to claim 1, characterized in that: The stirring mechanism comprises a motor and a stirring shaft arranged at the bottom end of the reaction tank; the output end of the motor is drivingly connected to the stirring shaft; a U-shaped stirring blade is fixedly arranged on the outer wall of the lower end of the stirring shaft.

6. A reactor device for preparing trichloropropane according to claim 1, characterized in that: A micro water pump in communication with the water outlet pipe is fixedly installed in the middle of the water outlet pipe.

7. A reactor device for preparing trichloropropane according to claim 1, characterized in that: A cooling fan is fixedly installed on the outside of the cooling box; the air outlet of the cooling fan corresponds to the position of the semiconductor refrigeration sheet, and a gap is arranged between the semiconductor refrigeration sheet and the cooling fan.

8. A reactor device for preparing trichloropropane according to claim 1, characterized in that: The outer wall of the thermal insulation sleeve is provided with a heat insulation layer; the inner wall of the thermal insulation sleeve is provided with a heat conduction ring, and the heat conduction ring is in contact with the outer wall of the reaction tank.

9. A reactor device for preparing trichloropropane according to claim 1, characterized in that: The reflux pipe is provided with a one-way check valve.

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