Reaction kettle structure for synthesizing isopropyl chloroformate

Abstract

The reaction kettle structure comprises a kettle body, a liquid pump is arranged at the outer top of the kettle body, an air pump is arranged at the outer bottom of the kettle body, a liquid inlet of the liquid pump is communicated with a liquid conveying pipeline, a liquid outlet of the liquid pump is communicated with a liquid inlet pipe, and the tail end of the liquid inlet pipe downwards extends into the kettle body and is rotationally connected with a liquid spraying pipe. The peripheral side of the lower part of the liquid spraying pipe is communicated with a plurality of liquid spraying branch pipes, the bottom ends of the liquid spraying pipe and the liquid spraying branch pipes are communicated with liquid spraying nozzles, an air inlet of the air pump is communicated with an air conveying pipeline, an air outlet of the air pump is communicated with an air inlet pipe, and the tail end of the air inlet pipe upwards extends into the kettle body and is rotationally connected with an air spraying pipe; a guide rail is arranged on the top in the kettle body, an electric sliding block is arranged on the guide rail in a sliding mode, the bottom end of the electric sliding block is fixedly connected with an L-shaped connecting rod, and the tail end of the connecting rod is fixedly connected with a rotating frame. According to the utility model, the hedging contact of alcohol and phosgene and efficient and high-quality stirring can be realized, and the reaction efficiency and quality are higher.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of reaction kettle, concretely relates to a reaction kettle structure of isopropyl chloroformate synthesis. BACKGROUND

[0002] Isopropyl chloroformate is an organic compound, mainly used as pesticide intermediate, ore flotation agent and initiator of free radical polymerization reaction, has extensive application field.At present, isopropyl chloroformate is mainly synthesized through intermittent method and semi-continuous method etc., when intermittent method is adopted, mainly is to add quantitative alcohol and phosgene to reaction kettle and carry out synthesis reaction, after reaction, material is sent to deacidification kettle and carries out nitrogen deacidification until product reaches index.But when actually carrying out synthesis reaction, generally alcohol is added to reaction kettle first, then stirrer is started and is stirred, then phosgene is introduced and is mixed, this mode is not conducive to alcohol and phosgene to contact fully, and the stirring effect of conventional stirrer is not ideal, further influences the reaction, leads to that reaction rate is low, and the utilization rate of phosgene is not high, has great adverse influence to the overall synthesis efficiency and quality, and needs improvement. CONTENT OF UTILITY MODEL

[0003] Therefore, the utility model aims at providing a reaction kettle structure of isopropyl chloroformate synthesis, can realize direct collision contact of alcohol and phosgene when feeding and high-efficiency and high-quality mixing and stirring after feeding, so as to solve the above problems.

[0004] In order to achieve the above object, the utility model adopts the technical scheme of a kind of isopropyl chloroformate synthesis's reaction kettle structure, including kettle body, the outer top of kettle body is fixed with liquid pump, outer bottom is fixed with gas pump, the liquid inlet of liquid pump is connected with liquid delivery line, and the liquid outlet is connected with liquid inlet pipe, the tail end of liquid inlet pipe is downward into kettle body and is rotatably connected with liquid injection pipe, the lower part of the circumferential side of liquid injection pipe is connected with several liquid injection branch pipes, the bottom of liquid injection pipe and liquid injection branch pipe is connected with liquid nozzle, the gas inlet of gas pump is connected with gas delivery line, and the gas outlet is connected with gas inlet pipe, the tail end of gas inlet pipe is upward into kettle body and is rotatably connected with gas injection pipe, the upper part of the circumferential side of gas injection pipe is connected with several gas injection branch pipes, the top of gas injection pipe and gas injection branch pipe is connected with gas nozzle, the inner top of kettle body is fixed with a circular guide rail, the guide rail, liquid injection pipe and gas injection pipe are coaxially arranged, electric sliding block is slidably arranged on the guide rail, the bottom of electric sliding block is fixedly connected with L-shaped connecting rod, the tail end of connecting rod is fixedly connected with rotating frame, the upper frame of rotating frame is fixedly sleeved with the upper part of liquid injection pipe, and the lower frame is fixedly sleeved with the lower part of gas injection pipe, the lower part of the left and right sides of rotating frame is equipped with inclined plane, and the first motor is fixedly arranged on the inclined plane, the output shaft of first motor is forward and is fixedly connected with second motor, the output shaft of second motor is downward and is fixedly connected with stirring shaft, the circumferential side of stirring shaft is fixedly connected with several square stirring frames, the stirring frame is fixedly provided with the net-shaped stirring piece formed by the intersection of several horizontal rods and several vertical rods.

[0005] Preferably, the liquid pump is a metering pump, and the liquid inlet pipe and the gas inlet pipe are each provided with a flow regulating valve, and the gas inlet pipe is further provided with a gas flow meter.

[0006] Preferably, the top of the kettle body is connected with an exhaust pipe provided with an exhaust valve.

[0007] Preferably, the bottom of the kettle body is connected with a liquid discharge pipe provided with a liquid discharge valve.

[0008] Preferably, the kettle body is fixedly arranged on a support base made of foamed aluminum.

[0009] Preferably, the bottom of the support base is fixedly provided with a rubber non-slip pad.

[0010] The utility model discloses beneficial effect is: when synthetic operation, can be under the pumping of liquid pump, through liquid inlet pipe, the alcohol material needed for reaction is transported to the liquid spray pipe, then is shunted to each liquid spray branch pipe by liquid spray pipe, finally through the liquid spray head on liquid spray pipe and liquid spray branch pipe and sprays downward, can be under the pumping of air pump, through air inlet pipe, the phosgene material needed for reaction is transported to the air spray pipe, then is shunted to each air spray branch pipe by air spray pipe, finally through the gas spray head on air spray pipe and air spray branch pipe and sprays upward, make alcohol and phosgene can directly counter current contact mixing. Meanwhile, electric sliding block operation can drive connecting rod, rotating frame, liquid spray pipe and air spray pipe whole along guide rail and turn over, thereby make the alcohol and phosgene that sprays can be more fully contact mixing and evenly distributed to the kettle body. In addition, first motor and second motor operation, first motor can drive second motor and stirring shaft whole reciprocating rotation between air inlet pipe and the side frame of rotating frame, to guarantee the stirring range, second motor can drive stirring shaft and the multiple stirring frame with net stirring piece on it turn over, realize strong stirring, cooperate the whole revolution of rotating frame, namely can realize the overall efficient high quality stirring mixing of the gas-liquid mixture after counter current contact mixing, the range of stirring is wide and the strength is enough, can effectively enhance the stirring mixing effect of whole, under the cooperation of each other, can greatly improve the overall reaction rate, guarantee the reaction efficiency and synthesis quality of whole, more practical. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the main view structural schematic diagram of the utility model;

[0012] Fig. 2 It is the main view cross section structural schematic diagram of the utility model;

[0013] Fig. 3 It is the main view structural schematic diagram of the liquid spray pipe, air spray pipe and rotating frame of the utility model.

[0014] Marked number in the drawing: 1 is kettle body, 2 is liquid pump, 3 is air pump, 4 is liquid pipeline, 5 is liquid inlet pipe, 6 is liquid spray pipe, 7 is liquid spray branch pipe, 8 is liquid spray head, 9 is gas pipeline, 10 is air inlet pipe, 11 is air spray pipe, 12 is air spray branch pipe, 13 is gas spray head, 14 is guide rail, 15 is electric sliding block, 16 is connecting rod, 17 is rotating frame, 18 is first motor, 19 is second motor, 20 is stirring shaft, 21 is stirring frame, 22 is net stirring piece, 23 is flow regulating valve, 24 is gas flowmeter, 25 is exhaust valve, 26 is exhaust pipe, 27 is liquid discharge valve, 28 is liquid discharge pipe, 29 is support base, 30 is rubber antiskid pad. DETAILED DESCRIPTION

[0015] The utility model will be further described in detail below combining with the drawings and specific implementation:

[0016] AsFigs. 1 to 3 As shown, a kind of reaction kettle structure for isopropyl chloroformate synthesis, including kettle body 1, the outer top of kettle body 1 is fixed with liquid pump 2, and the outer bottom is fixed with gas pump 3.Liquid inlet of liquid pump 2 is communicated with liquid delivery line 4, and liquid outlet is communicated with liquid inlet pipe 5, and tail end of liquid inlet pipe 5 is downwardly inserted into kettle body 1 and rotationally connected with liquid injection pipe 6, and the lower part of the periphery of liquid injection pipe 6 is communicated with several liquid injection branch pipes 7, and the bottom end of liquid injection pipe 6 and liquid injection branch pipe 7 is communicated with liquid nozzle 8.Gas inlet of gas pump 3 is communicated with gas delivery line 9, and gas outlet is communicated with gas inlet pipe 10, and tail end of gas inlet pipe 10 is upwardly inserted into kettle body 1 and rotationally connected with gas injection pipe 11, and the upper part of the periphery of gas injection pipe 11 is communicated with several gas injection branch pipes 12, and the top end of gas injection pipe 11 and gas injection branch pipe 12 is communicated with gas nozzle 13.The inner top of kettle body 1 is fixedly provided with a circular guide rail 14, the guide rail 14, the liquid injection pipe 6 and the gas injection pipe 11 are coaxially arranged, the electric sliding block 15 is slidably arranged on the guide rail 14, the bottom end of the electric sliding block 15 is fixedly connected with L-shaped connecting rod 16, the tail end of the connecting rod 16 is fixedly connected with rotating frame 17, the upper edge frame of rotating frame 17 is fixedly sleeved with the upper part of liquid injection pipe 6, and the lower edge frame is fixedly sleeved with the lower part of gas injection pipe 11.The lower part of the left and right sides of rotating frame 17 is provided with inclined surface, and the first motor 18 is fixedly arranged on the inclined surface, the output shaft of first motor 18 is forwardly and fixedly connected with second motor 19, the output shaft of second motor 19 is downwardly and fixedly connected with stirring shaft 20, the periphery of stirring shaft 20 is fixedly connected with several square stirring frames 21, and the stirring frame 21 is fixedly provided with mesh stirring element 22 formed by the intersection of several horizontal rods and several vertical rods;

[0017] During the synthesis operation, the alcohol material required for the reaction can be delivered to the liquid injection pipe 6 through the liquid inlet pipe 5 under the pumping of the liquid pump 2, then divided into each liquid injection branch pipe 7 through the liquid injection pipe 6, and finally sprayed downward through the liquid injection head 8 on the liquid injection pipe 6 and the liquid injection branch pipe 7. The phosgene material required for the reaction can be delivered to the gas injection pipe 11 through the gas inlet pipe 10 under the pumping of the gas pump 3, then divided into each gas injection branch pipe 12 through the gas injection pipe 11, and finally sprayed upward through the gas injection head 13 on the gas injection pipe 11 and the gas injection branch pipe 12, so that the alcohol and the phosgene can be directly contacted and mixed in countercurrent. At the same time, the electric sliding block 15 operates to drive the connecting rod 16, the rotating frame 17, the liquid injection pipe 6 and the gas injection pipe 11 as a whole to rotate along the guide rail 14, so that the sprayed alcohol and phosgene can be more fully contacted and mixed and uniformly distributed into the kettle body 1. In addition, the first motor 18 and the second motor 19 operate, the first motor 18 can drive the second motor 19 and the stirring shaft 20 as a whole to reciprocate between the gas inlet pipe 10 and the side frame of the rotating frame 17 to ensure the stirring range, and the second motor 19 can drive the stirring shaft 20 and the plurality of stirring frames 21 with the mesh stirring pieces 22 thereon to rotate, so as to realize strong stirring. Combined with the revolution of the rotating frame 17 as a whole, the gas-liquid mixture after countercurrent contact and mixing can be fully, efficiently and high-quality stirred and mixed, the stirring range is wide and the stirring force is sufficient, which can effectively enhance the overall stirring and mixing effect, and the overall reaction rate can be greatly improved under the cooperation of the above-mentioned, so as to ensure the reaction efficiency and the synthesis quality, and the device is more practical.

[0018] In the embodiment, the liquid pump 2 is a metering pump, which is used to accurately control the amount of input alcohol. The liquid inlet pipe 5 and the gas inlet pipe 10 are each provided with a flow regulating valve 23, which is used to conveniently regulate the liquid flow and the gas flow, respectively. The gas inlet pipe 10 is also provided with a gas flow meter 24, which is used to accurately control the amount of input phosgene.

[0019] In the embodiment, the top of the kettle body 1 is connected with an exhaust pipe 26 provided with an exhaust valve 25, which is used to exhaust the tail gas.

[0020] In the embodiment, the bottom of the kettle body 1 is connected with a liquid discharge pipe 28 provided with a liquid discharge valve 27, which is used to discharge the material liquid after the reaction.

[0021] In the embodiment, the kettle body 1 is fixedly arranged on a support base 29 made of foamed aluminum material. Foamed aluminum is a material that has the characteristics of high damping, shock absorption and energy absorption, and can provide good buffering and shock absorption effect, so as to ensure that the reaction operation is more stable.

[0022] In the embodiment, the bottom of the support base 29 is fixedly provided with a rubber non-slip pad 30, which can effectively enhance the friction between the support base 29 and the ground, so as to make the device more stable and fixed, and ensure the stability of the operation.

[0023] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A reactor structure for the synthesis of isopropyl chloroformate comprising a reactor vessel, characterised in that, The outer top of the kettle body is fixed with a liquid pump, and the outer bottom is fixed with an air pump, the liquid inlet of the liquid pump is communicated with a liquid conveying pipeline, and the liquid outlet is communicated with a liquid inlet pipe, the tail end of the liquid inlet pipe extends downward into the kettle body and is rotationally connected with a liquid spray pipe, a plurality of liquid spray branch pipes are communicated on the lower part of the circumferential side of the liquid spray pipe, the bottom ends of the liquid spray pipe and the liquid spray branch pipes are communicated with liquid spray heads, the gas inlet of the air pump is communicated with a gas conveying pipeline, and the gas outlet is communicated with a gas inlet pipe, the tail end of the gas inlet pipe extends upward into the kettle body and is rotationally connected with a gas spray pipe, a plurality of gas spray branch pipes are communicated on the upper part of the circumferential side of the gas spray pipe, the top ends of the gas spray pipe and the gas spray branch pipes are communicated with gas spray heads, a circular guide rail is fixedly arranged on the inner top of the kettle body, the guide rail, the liquid spray pipe and the gas spray pipe are coaxially arranged, an electric sliding block is slidably arranged on the guide rail, the bottom end of the electric sliding block is fixedly connected with an L-shaped connecting rod, the tail end of the connecting rod is fixedly connected with a rotating frame, the upper edge frame of the rotating frame is fixedly sleeved with the upper part of the liquid spray pipe, and the lower edge frame is fixedly sleeved with the lower part of the gas spray pipe, the lower parts of the left and right sides of the rotating frame are provided with inclined surfaces, and first motors are fixedly arranged on the inclined surfaces, the output shaft of the first motor faces forward and is fixedly connected with a second motor, the output shaft of the second motor faces downward and is fixedly connected with a stirring shaft, a plurality of square stirring frames are fixedly connected on the circumferential side of the stirring shaft, and a mesh stirring piece formed by a plurality of horizontal rods and a plurality of vertical rods is fixedly arranged in the stirring frame.

2. The reactor structure for synthesis of isopropyl chloroformate as claimed in claim 1, wherein, The liquid pump is a metering pump, flow regulating valves are arranged on the liquid inlet pipe and the gas inlet pipe, and a gas flow meter is further arranged on the gas inlet pipe.

3. The reactor structure for synthesis of isopropyl chloroformate as claimed in claim 1, wherein, An exhaust pipe with an exhaust valve is communicated with the top of the kettle body.

4. The reactor structure for synthesis of isopropyl chloroformate as claimed in claim 1, wherein, A liquid discharge pipe with a liquid discharge valve is communicated with the bottom of the kettle body.

5. The reactor structure for synthesis of isopropyl chloroformate as claimed in claim 1, wherein, The kettle body is fixedly arranged on a support base made of foamed aluminum.

6. The reactor structure for synthesis of isopropyl chloroformate as claimed in claim 5, wherein, A rubber anti-skid pad is fixedly arranged on the bottom of the support base.

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