Polymerization equipment for PVC processing

Abstract

The invention relates to the technical field of chemical engineering, and provides polymerization equipment for PVC (polyvinyl chloride) processing, which comprises a base, a turbine stirring device, a liquid circulating device, a purifying device and a controller. The turbine stirring device is arranged above the base and is used for stirring the raw materials. The liquid circulating device is arranged above the base and is used for providing heat in the initial stage of the polymerization reaction and cooling in the later stage of the polymerization reaction. The purification device is arranged above the turbine stirring device and is used for purifying gas generated by polymerization reaction. The controller is arranged above the base, fixedly connected with the base, electrically connected with the turbine stirring device and electrically connected with the liquid circulating device. When working is started, a worker starts the turbine stirring device through the controller, the turbine stirring device mixes raw materials, and the polymerization reaction is accelerated. And the turbine stirring device drives the purification device to adsorb and purify the waste gas generated by the polymerization reaction. And the turbine stirring device drives the liquid circulating device to heat and cool the polymerization reaction.

Description

Technical Field

[0001] The invention relates to the technical field of chemical industry, in particular to a polymerization device for PVC processing. Background Art

[0002] As a key device in modern chemical production, the background technology of polymerization equipment for PVC processing is rooted in the long-term development and innovation of the polyvinyl chloride (PVC) industry. Since the widespread use of PVC materials in the mid-20th century, polymerization equipment has undergone a significant evolution from basic to high-efficiency, large-scale and automated. Early PVC polymerization equipment was mostly small-scale kettle reactors with stainless steel or carbon steel composite structures and relatively simple stirring systems, such as propulsion flat paddle + inclined paddle type. Although these equipment can meet basic production needs, they have low production intensity, high energy consumption and complex operation. With the advancement of science and technology, especially the development of materials science, automation control technology and chemical engineering, the design of PVC polymerization equipment has been continuously optimized, and various types such as suspension polymerization kettle, bulk polymerization kettle and solution polymerization kettle have emerged to meet the needs of different production processes. The enhancement of environmental awareness has also prompted PVC polymerization equipment to pay more attention to energy conservation, emission reduction and recycling when designing. For example, by optimizing the heat exchange system, the utilization rate of thermal energy can be improved; by adopting advanced exhaust gas treatment technologies, such as activated carbon adsorption and catalytic combustion, the emission of harmful gases can be reduced; and by developing new polymerization processes, such as micro-suspension polymerization and supercritical fluid polymerization, etc., the aim is to reduce energy consumption, reduce waste generation, and achieve green production.

[0003] During the polymerization process of PVC, due to the incomplete reaction of raw materials and the generation of by-products, excess tail gas containing unreacted monomers, solvent vapor, low molecular weight polymers and other volatile organic compounds will be generated. If these tail gases are not properly treated, they will not only cause environmental pollution, but also affect production safety. Summary of the invention

[0004] The invention aims to solve the technical problem of how to purify the tail gas generated during the polymerization reaction, and proposes a polymerization equipment for PVC processing. The technical solution of the invention is as follows: A polymerization device for PVC processing includes: a base, a turbine stirring device, a liquid circulation device, a purification device, and a controller. The turbine stirring device is arranged above the base, and is used to stir the raw materials. The liquid circulation device is arranged above the base, and is used to provide heat in the early stage of the polymerization reaction and to cool in the late stage of the polymerization reaction. The purification device is arranged above the turbine stirring device, and is used to purify the gas generated by the polymerization reaction. The controller is arranged above the base, fixedly connected to the base, electrically connected to the turbine stirring device, and electrically connected to the liquid circulation device.

[0005] Furthermore, the turbine stirring device includes: a bracket, a reactor, a conical partition, a stirring barrel, a motor, a reciprocating screw, a filter plate, a stirring rod, an electric valve, a plurality of stirring blades, a feed pipe, a gas storage tank, and an air inlet pipe. The bracket is arranged above the base and is fixedly connected to the base. The reactor is vertically arranged above the bracket and is fixedly connected to the bracket, and a discharge door is arranged on the top of the reactor. The axis of the conical partition coincides with the axis of the reactor, and the conical partition is arranged inside the reactor, and its edge is tightly attached to and fixedly connected to the reactor. The axis of the stirring barrel coincides with the axis of the reactor, and the stirring barrel is arranged inside the reactor and below the conical partition, and the top of the stirring barrel is tightly attached to and fixedly connected to the bottom surface of the conical partition. The axis of the motor shaft coincides with the axis of the reactor, and the motor shaft passes through the upper part of the reactor. The motor is fixedly connected to the upper surface of the reactor and is electrically connected to the controller. The axis of the reciprocating screw coincides with the axis of the motor shaft, is arranged above the conical partition, and is arranged below the motor shaft. The upper end of the reciprocating screw is fixedly connected to the motor shaft. The filter plate is arranged horizontally, arranged in the reactor, sleeved on the reciprocating screw, and arranged above the conical partition. The filter plate is fixedly connected to the slider of the reciprocating screw, and the edge of the filter plate is vertically slidably connected to the inner side of the reactor. The axis of the stirring rod coincides with the axis of the motor shaft, passes through the bottom of the reactor, the bottom of the mixing barrel, and the conical partition. The stirring rod is arranged directly below the reciprocating screw, and the upper end of the stirring rod is fixedly connected to the lower end of the reciprocating screw. The stirring rod is sealed and rotatably connected to the reactor and the mixing barrel, and its rotation axis is arranged vertically. The electric valve passes through the conical partition and is arranged on the side of the stirring rod. The electric valve is fixedly connected to the conical partition. A plurality of stirring blades are arranged in the mixing barrel, sleeved on the stirring rod, and a plurality of stirring blades are fixedly connected to the stirring rod. The feed pipe passes through the upper surface of the reactor, is arranged on the side of the motor, and is connected to the inside of the reactor. The gas tank is arranged above the base and on the side of the bracket. The gas tank is fixedly connected to the base. An electric valve is arranged at the gas outlet of the gas tank. Compressed polyethylene monomer is arranged in the gas tank. The air inlet pipe passes through the side of the reactor and the side of the stirring barrel. The lower end of the air inlet pipe is connected to the gas tank, and the upper end is connected to the stirring barrel. The discharge pipe passes through the side of the reactor and the stirring barrel away from the gas tank, and is connected to the inside of the stirring barrel. An electric valve is arranged inside the discharge pipe, and the electric valve is electrically connected to the controller.

[0006] When the work starts, the staff opens the electric valve at the motor and the gas tank outlet. The motor rotates to drive the reciprocating screw, which drives the filter plate to move up and down, and drives the stirring rod to rotate at the same time. The filter plate moves up and down to screen the raw materials. When the stirring rod rotates, the stirring rod drives the stirring blade to rotate, and the stirring blade rotates to stir the raw materials in the stirring barrel to promote the polymerization reaction.

[0007] When the electric valve at the gas outlet of the gas tank is opened, the polyethylene monomer in the gas tank enters the mixing barrel and undergoes polymerization reaction under the action of the catalyst to produce PVC material. After cooling is completed, the staff controls the electric valve of the discharge pipe to open through the controller and take out the PVC material.

[0008] Furthermore, the stirring rod is rotatably connected to the reaction kettle via a sealed bearing.

[0009] Sealed bearings can ensure the sealing inside the reactor.

[0010] Furthermore, a sealing cover is provided on the feed pipe, and the sealing cover is threadedly connected to the feed pipe.

[0011] The sealing cover on the feed pipe prevents gas leakage during the reaction process and pollutes the environment.

[0012] Furthermore, a sealing ring is provided between the air inlet pipe and the reactor.

[0013] The sealing ring between the air inlet pipe and the reactor prevents the circulating liquid from flowing out.

[0014] Furthermore, the liquid circulation device includes: a first sealed box, a second sealed box, a first piston, a second piston, an incomplete gear, two racks, a hot water tank, a cold water tank, a first connecting pipe, a second connecting pipe, a first water inlet pipe, a second water inlet pipe, a third water inlet pipe, a first electric three-way valve, a first water outlet pipe, a second water outlet pipe, a third water outlet pipe, a second electric three-way valve, and a temperature sensor. The axis of the first sealed box is arranged horizontally, the first sealed box is arranged above the base, arranged below the reactor, arranged inside the bracket, arranged on the side of the stirring rod close to the gas tank, and the first sealed box is fixedly connected to the base. The axis of the second sealed box coincides with the axis of the first sealed box, the second sealed box is symmetrically arranged with the first sealed box, and is arranged on the side of the stirring rod away from the first sealed box, and the second sealed box is fixedly connected to the base. The first piston is arranged inside the first sealed box and is slidably connected to the first sealed box in the horizontal direction. The second piston is arranged inside the second sealed box and is slidably connected to the second sealed box in the horizontal direction. The incomplete gear is sleeved on the stirring rod, arranged below the reactor, and arranged between the first sealed box and the second sealed box, and the incomplete gear is fixedly connected to the stirring rod. The two racks are parallel to the axis of the first sealed box, the two racks are symmetrically arranged, and the two racks are respectively arranged on both sides of the incomplete gear. The two racks penetrate the first sealed box and the second sealed box near the side of the incomplete gear. The two ends of the two racks are respectively fixedly connected to the first piston and the second piston. The two racks are slidably connected to the first sealed box and the second sealed box in the horizontal direction and cooperate with the incomplete gear. The hot water tank is arranged between the gas storage tank and the reactor, arranged above the base, the hot water tank is fixedly connected to the base, a heating wire is arranged in the hot water tank, the heating wire is electrically connected to the controller, and a water injection port is arranged on the top of the hot water tank. The cold water tank is arranged between the gas storage tank and the reactor, arranged on the side of the hot water tank, the cold water tank is fixedly connected to the base, a cooling part of a cooler is arranged in the cold water tank, the cooler is electrically connected to the controller, and a water injection port is arranged on the top of the cold water tank. The first connecting pipe is arranged on the side of the first sealed box away from the incomplete gear, the lower end of the first connecting pipe is connected to the side of the first sealed box away from the incomplete gear, and the upper end is connected to the inside of the reactor. The second connecting pipe is arranged on the side of the second sealed box away from the incomplete gear, the lower end of the second connecting pipe is connected to the side of the first sealed box away from the incomplete gear, and the upper end is connected to the inside of the reactor. One end of the first water inlet pipe is connected to the side of the first sealed box away from the incomplete gear. One end of the second water inlet pipe is connected to the hot water tank. One end of the third water inlet pipe is connected to the cold water tank. The three ports of the first electric three-way valve are respectively connected to the other end of the first water inlet pipe, the other end of the second water inlet pipe, and the other end of the third water inlet pipe, and the first electric three-way valve is electrically connected to the controller. One end of the first water outlet pipe is connected to the side of the second sealed box away from the incomplete gear. One end of the second water outlet pipe is connected to the hot water tank. One end of the third water outlet pipe is connected to the cold water tank.The three ports of the second electric three-way valve are respectively connected to the other end of the first water outlet pipe, the other end of the second water outlet pipe, and the other end of the third water outlet pipe, and the second electric three-way valve is electrically connected to the controller. The temperature sensor is arranged in the mixing barrel, the temperature sensor is fixedly connected to the mixing box, and is electrically connected to the controller.

[0015] When the stirring rod rotates, the stirring rod drives the incomplete gear to rotate, and the incomplete gear drives the rack to move left and right. When the rack moves to the right, the rack moves to the right and drives the first piston and the second piston to move to the right. The first piston moves to the right to form a negative pressure in the first sealed box, and the circulating liquid is sucked into the first sealed box through the first water inlet pipe. When the second piston moves to the right, the second piston pushes the circulating liquid in the second sealed box into the first water outlet pipe. When the rack moves to the left, the rack moves to the left and drives the first piston and the second piston to move to the left. The first piston pushes the circulating liquid in the first sealed box to the left through the first connecting pipe into the mixing barrel and the reactor. When the second piston moves to the left, a negative pressure is formed in the first sealed box, and the circulating liquid between the mixing barrel and the reactor is sucked into the second sealed box. Thus, the cycle is completed.

[0016] When the controller controls the first electric three-way valve and the second electric three-way valve to connect the first water inlet pipe and the second water outlet pipe, hot water enters the first sealed box from the hot water tank through the second water inlet pipe and the first water inlet pipe, the first sealed box transports the hot water between the reactor and the mixing barrel to heat the inside of the mixing barrel, and then the hot water enters the second sealed box through the second connecting pipe, the second sealed box transports the hot water through the first water outlet pipe and the second water outlet pipe to the hot water tank for heating, thereby realizing hot water circulation and providing heat for starting the polymerization reaction.

[0017] When the polymerization reaction is completed, the controller controls the first electric three-way valve and the second electric three-way valve to connect the first water inlet pipe with the third water inlet pipe, and the first water outlet pipe with the third water outlet pipe, and cold water enters the first sealed box from the cold water tank through the third water inlet pipe and the first water inlet pipe, and the first sealed box transports the cold water between the reactor and the mixing barrel to cool the inside of the mixing barrel, and then the cold water enters the second sealed box through the second connecting pipe, and the second sealed box transports the cold water through the first water outlet pipe and the third water outlet pipe to the cold water tank for cooling, thereby dissipating heat after the polymerization reaction is completed.

[0018] Furthermore, a plurality of one-way valves are respectively arranged in the middle of the first connecting pipe, the second connecting pipe, the first water inlet pipe and the first water outlet pipe, and the plurality of one-way valves are fixedly connected to the first connecting pipe, the second connecting pipe, the first water inlet pipe and the first water outlet pipe.

[0019] The check valve allows the circulating fluid to move in one direction, thus completing the circulation.

[0020] Furthermore, the purification device includes: an adsorption box, a dust cover, a diffuser hole, a connecting rod, an adsorption plate, a third connecting pipe, and a pressure valve. The adsorption box is arranged above the reactor, and is arranged on the side of the motor away from the feed pipe, and the adsorption box is fixedly connected to the reactor. The dust cover is arranged above the top of the adsorption box, and the dust cover is fixedly connected to the adsorption box. The diffuser hole is arranged on the dust cover, and the diffuser hole is connected to the inside of the adsorption box. The connecting rod is arranged vertically, passes through the upper part of the reactor and the bottom of the adsorption box, is arranged above the filter plate, and the lower end of the connecting rod is fixedly connected to the filter plate. The connecting rod is slidably connected to the adsorption box in the vertical direction, and is slidably connected to the reactor in the vertical direction. The adsorption plate is arranged inside the adsorption box, and is arranged above the connecting rod. The adsorption plate is fixedly connected to the upper end of the connecting rod, and is slidably connected to the adsorption box in the vertical direction. The third connecting pipe passes through the side of the reactor and the side of the stirring barrel, and the upper end of the third connecting pipe is connected to the bottom of the adsorption box, and the lower end of the third connecting pipe is connected to the stirring barrel. The pressure valve is arranged in the middle of the third connecting pipe and is fixedly connected to the third connecting pipe.

[0021] When the filter plate moves up and down, the filter plate drives the connecting rod to move up and down, and the connecting rod moves up and down to drive the adsorption plate to move up and down. The adsorption plate moves up and down to speed up the absorption of the exhaust gas flowing out of the mixing barrel to prevent pollution of the environment and impact on the staff. When the pressure in the mixing barrel reaches a certain level, the gas in the mixing barrel will enter the adsorption box through the pressure valve to prevent the pressure from affecting the reaction.

[0022] Furthermore, the adsorption plate is made of activated carbon.

[0023] After the activated carbon has reached saturation in the adsorption of vinyl chloride monomer, it can be analyzed by passing steam to recover the vinyl chloride monomer.

[0024] Furthermore, the dust cover is fixedly connected to the adsorption box via threads.

[0025] The dust cover is fixedly connected to the adsorption box through threads, making it convenient for workers to disassemble the adsorption plate.

[0026] Beneficial effects of the present invention: 1. The filter plate is driven to move up and down by the reciprocating screw, and the up and down movement of the filter plate drives the connecting rod and the adsorption plate to move up and down, increasing the contact area between the adsorption plate and the exhaust gas, thereby improving the adsorption effect of the exhaust gas.

[0027] 2. The rotation of the stirring rod drives the incomplete gear to rotate, and the rotation of the incomplete gear drives the rack to move left and right. The left and right movement of the rack drives the first piston and the second piston to move left and right, and the circulating liquid is transported from the first sealing box to between the reactor and the stirring barrel. Then the second sealing box extracts the circulating liquid to complete the cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Figure 1 It is a front cross-sectional view of the present invention; Figure 2 It is a top cross-sectional view of the present invention.

[0030] Description of reference numerals: 101, base; 102, controller; 201, bracket; 202, reactor; 203, conical partition; 204, stirring barrel; 205, motor; 206, reciprocating screw; 207, filter plate; 208, stirring rod; 209, electric valve; 210, stirring blade; 211, feed pipe; 212, gas storage tank; 213, air inlet pipe; 214, discharge pipe; 301, first sealed box; 302, second sealed box; 303, first piston; 304, second piston; 305, incomplete gear; 306, rack; 3 ...7, first sealed box; 308, second piston; 309, second piston; 310, incomplete gear; 311, rack; 312, filter plate; 313, inlet pipe; 314, discharge pipe; 315, first sealed box; 316, second sealed box; 317, first piston; 318, second piston; 319, second piston; 320, second piston; 321, second piston; 322, second piston; 323, second piston 7. Hot water tank; 308. Cold water tank; 309. First connecting pipe; 310. Second connecting pipe; 311. First water inlet pipe; 312. Second water inlet pipe; 313. Third water inlet pipe; 314. First electric three-way valve; 315. First water outlet pipe; 316. Second water outlet pipe; 317. Third water outlet pipe; 318. Second electric three-way valve; 319. Check valve; 320. Temperature sensor; 401. Adsorption box; 402. Dust cover; 403. Air diffusion hole; 404. Connecting rod; 405. Adsorption plate; 406. Third connecting pipe; 407. Pressure valve. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 2 The present invention provides a polymerization device for PVC processing, including: a base 101, a turbine stirring device, a liquid circulation device, a purification device, and a controller 102. The turbine stirring device is arranged above the base 101, and is used to stir the raw materials. The liquid circulation device is arranged above the base 101, and is used to provide heat in the early stage of the polymerization reaction and cool in the late stage of the polymerization reaction. The purification device is arranged above the turbine stirring device, and is used to purify the gas generated by the polymerization reaction. The controller 102 is arranged above the base 101, fixedly connected to the base 101, electrically connected to the turbine stirring device, and electrically connected to the liquid circulation device.

[0033] The turbine stirring device includes: a bracket 201, a reactor 202, a conical partition 203, a stirring barrel 204, a motor 205, a reciprocating screw 206, a filter plate 207, a stirring rod 208, an electric valve 209, a plurality of stirring blades 210, a feed pipe 211, a gas storage tank 212, and an air intake pipe 213. The bracket 201 is arranged above the base 101 and is fixedly connected to the base 101. The reactor 202 is vertically arranged above the bracket 201 and is fixedly connected to the bracket 201. A discharge door is arranged on the top of the reactor 202. The axis of the conical partition 203 coincides with the axis of the reactor 202. The conical partition 203 is arranged inside the reactor 202, and its edge is tightly attached to and fixedly connected to the reactor 202. The axis of the stirring barrel 204 coincides with the axis of the reactor. The stirring barrel 204 is arranged in the reactor 202 and below the conical partition 203. The top of the stirring barrel 204 is closely attached to and fixedly connected to the bottom surface of the conical partition 203. The axis of the motor 205 shaft coincides with the axis of the reactor 202. The motor 205 shaft passes through the upper part of the reactor 202. The motor 205 is fixedly connected to the upper surface of the reactor 202 and is electrically connected to the controller 102. The axis of the reciprocating screw 206 coincides with the axis of the motor 205 shaft, is arranged above the conical partition 203, is arranged below the motor 205 shaft, and the upper end of the reciprocating screw 206 is fixedly connected to the motor 205 shaft. The filter plate 207 is arranged horizontally, arranged in the reactor 202, sleeved on the reciprocating screw 206, and arranged above the conical partition 203. The filter plate 207 is fixedly connected to the slider of the reciprocating screw 206, and the edge of the filter plate 207 is vertically slidably connected to the inner side of the reactor 202. The axis of the stirring rod 208 coincides with the axis of the rotating shaft of the motor 205, and passes through the bottom of the reactor 202, the bottom of the stirring barrel 204, and the conical partition 203. The stirring rod 208 is arranged directly below the reciprocating screw 206, and the upper end of the stirring rod 208 is fixedly connected to the lower end of the reciprocating screw 206. The stirring rod 208 is sealed and rotatably connected to the reactor 202 and the stirring barrel 204, and its rotation axis is arranged vertically. The electric valve 209 passes through the conical partition 203 and is arranged on the side of the stirring rod 208. The electric valve 209 is fixedly connected to the conical partition 203. A plurality of stirring blades 210 are arranged in the stirring barrel 204, and are sleeved on the stirring rod 208. The plurality of stirring blades 210 are fixedly connected to the stirring rod 208. A feed pipe 211 passes through the upper surface of the reactor 202, and is arranged on the side of the motor 205. The feed pipe 211 is connected to the inside of the reactor 202. A gas storage tank 212 is arranged above the base 101, and is arranged on the side of the bracket 201. The gas storage tank 212 is fixedly connected to the base 101. An electric valve is arranged at the gas outlet of the gas storage tank 212. Compressed polyethylene monomer is arranged in the gas storage tank 212. An air inlet pipe 213 passes through the side of the reactor 202 and the side of the stirring barrel 204. The lower end of the air inlet pipe 213 is connected to the gas storage tank 212, and the upper end is connected to the stirring barrel 204.The discharge pipe 214 passes through the reactor 202 and the side of the mixing barrel 204 away from the gas storage tank 212 , and is connected to the interior of the mixing barrel 204 . An electric valve is provided inside the discharge pipe 214 , and the electric valve is electrically connected to the controller 102 .

[0034] When the work starts, the staff opens the electric valve at the outlet of the motor 205 and the gas storage tank 212. The rotation of the motor 205 drives the reciprocating screw 206 to rotate. The rotation of the reciprocating screw 206 drives the filter plate 207 to move up and down, and drives the stirring rod 208 to rotate at the same time. The filter plate 207 is sifted when it moves up and down. When the stirring rod 208 rotates, the stirring rod 208 drives the stirring blade 210 to rotate. The stirring blade 210 rotates to stir the raw materials in the stirring barrel 204 to promote the polymerization reaction.

[0035] When the electric valve at the outlet of the gas storage tank 212 is opened, the polyethylene monomer in the gas storage tank 212 enters the mixing barrel 204 and undergoes polymerization reaction under the action of the catalyst to produce PVC material. After cooling, the staff controls the electric valve of the discharge pipe 214 to open through the controller 102 to take out the PVC material.

[0036] The stirring rod 208 is rotatably connected to the reaction kettle 202 via a sealed bearing.

[0037] The sealed bearing can ensure the sealing inside the reactor 202.

[0038] A sealing cover is provided on the feed pipe 211 , and the sealing cover is threadedly connected to the feed pipe 211 .

[0039] The sealing cover on the feed pipe 211 prevents the gas from leaking during the reaction and polluting the environment.

[0040] A sealing ring is provided between the air inlet pipe 213 and the reaction kettle 202 .

[0041] The sealing ring between the air inlet pipe 213 and the reactor 202 prevents the circulating liquid from flowing out.

[0042] The liquid circulation device includes: a first sealed box 301, a second sealed box 302, a first piston 303, a second piston 304, an incomplete gear 305, two racks 306, a hot water tank 307, a cold water tank 308, a first connecting pipe 309, a second connecting pipe 310, a first water inlet pipe 311, a second water inlet pipe 312, a third water inlet pipe 313, a first electric three-way valve 314, a first water outlet pipe 315, a second water outlet pipe 316, a third water outlet pipe 317, a second electric three-way valve 318, and a temperature sensor 320. The axis of the first sealed box 301 is horizontally arranged, the first sealed box 301 is arranged above the base 101, below the reactor 202, inside the bracket 201, and on the side of the stirring rod 208 close to the gas storage tank 212, and the first sealed box 301 is fixedly connected to the base 101. The axis of the second sealed box 302 coincides with the axis of the first sealed box 301. The second sealed box 302 is symmetrically arranged with the first sealed box 301, and is arranged on the side of the stirring rod 208 away from the first sealed box 301. The second sealed box 302 is fixedly connected to the base 101. The first piston 303 is arranged inside the first sealed box 301, and is slidably connected to the first sealed box 301 in the horizontal direction. The second piston 304 is arranged inside the second sealed box 302, and is slidably connected to the second sealed box 302 in the horizontal direction. The incomplete gear 305 is sleeved on the stirring rod 208, arranged below the reactor 202, and arranged between the first sealed box 301 and the second sealed box 302. The incomplete gear 305 is fixedly connected to the stirring rod 208. The two racks 306 are parallel to the axis of the first sealed box 301, and the two racks 306 are symmetrically arranged. The two racks 306 are respectively arranged on both sides of the incomplete gear 305. The two racks 306 penetrate the side of the first sealed box 301 and the second sealed box 302 close to the incomplete gear 305. The two ends of the two racks 306 are respectively fixedly connected to the first piston 303 and the second piston 304. The two racks 306 are slidably connected to the first sealed box 301 and the second sealed box 302 in the horizontal direction, and cooperate with the incomplete gear 305. The hot water tank 307 is arranged between the gas storage tank 212 and the reactor 202, and is arranged above the base 101. The hot water tank 307 is fixedly connected to the base 101. A heating wire is arranged in the hot water tank 307, and the heating wire is electrically connected to the controller. A water injection port is arranged on the top of the hot water tank 307. The cold water tank 308 is disposed between the gas storage tank 212 and the reactor 202, and is disposed on the side of the hot water tank 307. The cold water tank 308 is fixedly connected to the base 101. The cooling part of the cooler is disposed in the cold water tank 308. The cooler is electrically connected to the controller, and a water injection port is disposed on the top of the cold water tank 308. The first connecting pipe 309 is disposed on the side of the first sealed box 301 away from the incomplete gear 305. The lower end of the first connecting pipe 309 is connected to the side of the first sealed box 301 away from the incomplete gear 305, and the upper end is connected to the inside of the reactor 202.The second connecting pipe 310 is arranged on the side of the second sealed box 302 away from the incomplete gear 305. The lower end of the second connecting pipe 310 is connected to the side of the first sealed box 301 away from the incomplete gear 305, and the upper end is connected to the inside of the reactor 202. One end of the first water inlet pipe 311 is connected to the side of the first sealed box 301 away from the incomplete gear 305. One end of the second water inlet pipe 312 is connected to the hot water tank 307. One end of the third water inlet pipe 313 is connected to the cold water tank 308. The three ports of the first electric three-way valve 314 are respectively connected to the other end of the first water inlet pipe 311, the other end of the second water inlet pipe 312, and the other end of the third water inlet pipe 313, and the first electric three-way valve 314 is electrically connected to the controller 102. One end of the first water outlet pipe 315 is connected to the side of the second sealed box 302 away from the incomplete gear 305. One end of the second water outlet pipe 316 is connected to the hot water tank 307. One end of the third water outlet pipe 317 is connected to the cold water tank 308. The three ports of the second electric three-way valve 318 are respectively connected to the other end of the first water outlet pipe 315, the other end of the second water outlet pipe 316, and the other end of the third water outlet pipe 317, and the second electric three-way valve 318 is electrically connected to the controller 102. The temperature sensor 320 is disposed in the mixing barrel 204, and the temperature sensor 320 is fixedly connected to the mixing tank and electrically connected to the controller 102.

[0043] When the stirring rod 208 rotates, the stirring rod 208 drives the incomplete gear 305 to rotate, and the incomplete gear 305 drives the rack 306 to move left and right. When the rack 306 moves to the right, the rack 306 moves to the right and drives the first piston 303 and the second piston 304 to move to the right. The first piston 303 moves to the right to form a negative pressure in the first sealed box 301, and the circulating liquid is sucked into the first sealed box 301 through the first water inlet pipe 311. When the second piston 304 moves to the right, the second piston 304 pushes the circulating liquid in the second sealed box 302 into the first water outlet pipe 315. When the rack 306 moves to the left, the rack 306 moves to the left and drives the first piston 303 and the second piston 304 to move to the left. The first piston 303 pushes the circulating liquid in the first sealed box 301 to the left through the first connecting pipe 309 and enters between the stirring barrel 204 and the reactor 202. When the second piston 304 moves to the left, negative pressure is formed in the first sealed box 301, and the circulating liquid between the stirring barrel 204 and the reaction kettle 202 is sucked into the second sealed box 302, thereby completing the circulation.

[0044] When the controller 102 controls the first electric three-way valve 314 and the second electric three-way valve 318 to connect the first water inlet pipe 311 and the second water inlet pipe 312, and the first water outlet pipe 315 and the second water outlet pipe 316, hot water enters the first sealed box 301 from the hot water tank 307 through the second water inlet pipe 312 and the first water inlet pipe 311, and the first sealed box 301 transports the hot water to between the reactor 202 and the stirring barrel 204 to heat the inside of the stirring barrel 204, and then the hot water enters the second sealed box 302 through the second connecting pipe 310, and the second sealed box 302 transports the hot water through the first water outlet pipe 315 and the second water outlet pipe 316 to the hot water tank 307 for heating, thereby realizing hot water circulation and providing heat for starting the polymerization reaction.

[0045] When the polymerization reaction is completed, the controller 102 controls the first electric three-way valve 314 and the second electric three-way valve 318 to connect the first water inlet pipe 311 with the third water inlet pipe 313, and the first water outlet pipe 315 with the third water outlet pipe 317. Cold water enters the first sealed box 301 from the cold water tank 308 through the third water inlet pipe 313 and the first water inlet pipe 311. The first sealed box 301 transports the cold water between the reactor 202 and the mixing barrel 204 to cool the inside of the mixing barrel 204. After that, the cold water enters the second sealed box 302 through the second connecting pipe 310. The second sealed box 302 transports the cold water through the first water outlet pipe 315 and the third water outlet pipe 317 to the cold water tank 308 for cooling, thereby dissipating heat after the polymerization reaction is completed.

[0046] A plurality of one-way valves 319 are respectively arranged in the middle of the first connecting pipe 309 , the second connecting pipe 310 , the first water inlet pipe 311 and the first water outlet pipe 315 , and the plurality of one-way valves 319 are fixedly connected to the first connecting pipe 309 , the second connecting pipe 310 , the first water inlet pipe 311 and the first water outlet pipe 315 .

[0047] The one-way valve 319 allows the circulating fluid to move in one direction, thereby completing the circulation.

[0048] The purification device includes: an adsorption box 401, a dust cover 402, a diffuser hole 403, a connecting rod 404, an adsorption plate 405, a third connecting pipe 406, and a pressure valve 407. The adsorption box 401 is arranged above the reactor 202, and is arranged on the side of the motor 205 away from the feed pipe 211, and the adsorption box 401 is fixedly connected to the reactor 202. The dust cover 402 is arranged above the top of the adsorption box 401, and the dust cover 402 is fixedly connected to the adsorption box 401. The diffuser hole 403 is arranged on the dust cover 402, and the diffuser hole 403 is connected to the inside of the adsorption box 401. The connecting rod 404 is arranged vertically, passes through the upper part of the reactor 202 and the bottom of the adsorption box 401, and is arranged above the filter plate 207. The lower end of the connecting rod 404 is fixedly connected to the filter plate 207, and the connecting rod 404 is slidably connected to the adsorption box 401 in the vertical direction, and is slidably connected to the reactor 202 in the vertical direction. The adsorption plate 405 is arranged inside the adsorption box 401 and above the connecting rod 404. The adsorption plate 405 is fixedly connected to the upper end of the connecting rod 404 and is slidably connected to the adsorption box 401 in the vertical direction. The third connecting pipe 406 passes through the side of the reaction kettle 202 and the side of the stirring barrel 204. The upper end of the third connecting pipe 406 is connected to the bottom of the adsorption box 401, and the lower end of the third connecting pipe 406 is connected to the stirring barrel 204. The pressure valve 407 is arranged in the middle of the third connecting pipe 406 and is fixedly connected to the third connecting pipe 406.

[0049] When the filter plate 207 moves up and down, the filter plate 207 drives the connecting rod 404 to move up and down, and the connecting rod 404 moves up and down to drive the adsorption plate 405 to move up and down, and the adsorption plate 405 moves up and down to accelerate the absorption of the exhaust gas flowing out of the mixing barrel 204 to prevent environmental pollution and affect the staff. When the pressure in the mixing barrel 204 reaches a certain level, the gas in the mixing barrel 204 will enter the adsorption box 401 through the pressure valve 407 to prevent the pressure from affecting the reaction.

[0050] The adsorption plate 405 is made of activated carbon.

[0051] After the activated carbon has reached saturation in the adsorption of vinyl chloride monomer, it can be analyzed by passing steam to recover the vinyl chloride monomer.

[0052] The dust cover 402 is fixedly connected to the adsorption box 401 via threads.

[0053] The dust cover 402 is fixedly connected to the adsorption box 401 via threads, so that the staff can disassemble the adsorption plate 405 conveniently.

[0054] Working principle: At the beginning of the work, the staff adds the raw materials into the reactor 202 through the feed pipe 211, and then the staff turns on the electric heating wire, cooler, motor 205, first electric three-way valve 314, second electric three-way valve 318 and the electric valve at the outlet of the gas storage tank 212 through the controller 102. The rotation of the motor 205 drives the reciprocating screw rod 206 to rotate, and the rotation of the reciprocating screw rod 206 drives the filter plate 207 to move up and down, and drives the stirring rod 208 to rotate at the same time. The filter plate 207 moves up and down and drives the connecting rod 404 to move up and down. When the filter plate 207 moves up and down, the raw materials are screened.

[0055] When the connecting rod 404 moves up and down, the connecting rod 404 moves up and down to drive the adsorption plate 405 to move up and down, and the adsorption plate 405 moves up and down to accelerate the absorption of the exhaust gas flowing out of the mixing barrel 204 to prevent environmental pollution and affect the staff.

[0056] When the stirring rod 208 rotates, the stirring rod 208 drives the stirring blade 210 and the incomplete gear 305 to rotate. The stirring blade 210 rotates to stir the raw materials in the stirring barrel 204 to promote the polymerization reaction.

[0057] When the incomplete gear 305 rotates, the incomplete gear 305 drives the rack 306 to move left and right. When the rack 306 moves to the right, the rack 306 moves to the right and drives the first piston 303 and the second piston 304 to move to the right. The first piston 303 moves to the right to form a negative pressure in the first sealed box 301, and the circulating fluid is sucked into the first sealed box 301 through the first water inlet pipe 311.

[0058] When the second piston 304 moves to the right, the second piston 304 pushes the circulating fluid in the second sealing box 302 into the first water outlet pipe 315 .

[0059] When the rack 306 moves to the left, the rack 306 moves to the left, driving the first piston 303 and the second piston 304 to move to the left. The first piston 303 pushes the circulating fluid in the first sealing box 301 to the left through the first connecting pipe 309 and enters between the stirring barrel 204 and the reactor 202.

[0060] When the second piston 304 moves to the left, negative pressure is formed in the first sealed box 301, and the circulating liquid between the stirring barrel 204 and the reaction kettle 202 is sucked into the second sealed box 302, thereby completing the circulation.

[0061] When the controller 102 controls the first electric three-way valve 314 and the second electric three-way valve 318 to connect the first water inlet pipe 311 and the second water inlet pipe 312, and the first water outlet pipe 315 and the second water outlet pipe 316, hot water enters the first sealed box 301 from the hot water tank 307 through the second water inlet pipe 312 and the first water inlet pipe 311, and the first sealed box 301 transports the hot water to between the reactor 202 and the stirring barrel 204 to heat the inside of the stirring barrel 204, and then the hot water enters the second sealed box 302 through the second connecting pipe 310, and the second sealed box 302 transports the hot water through the first water outlet pipe 315 and the second water outlet pipe 316 to the hot water tank 307 for heating, thereby realizing hot water circulation and providing heat for starting the polymerization reaction.

[0062] When the polymerization reaction is completed, the controller 102 controls the first electric three-way valve 314 and the second electric three-way valve 318 to connect the first water inlet pipe 311 with the third water inlet pipe 313, and the first water outlet pipe 315 with the third water outlet pipe 317. Cold water enters the first sealed box 301 from the cold water tank 308 through the third water inlet pipe 313 and the first water inlet pipe 311. The first sealed box 301 transports the cold water between the reactor 202 and the mixing barrel 204 to cool the inside of the mixing barrel 204. After that, the cold water enters the second sealed box 302 through the second connecting pipe 310. The second sealed box 302 transports the cold water through the first water outlet pipe 315 and the third water outlet pipe 317 to the cold water tank 308 for cooling, thereby dissipating heat after the polymerization reaction is completed.

[0063] When the electric valve at the outlet of the gas storage tank 212 is opened, the polyethylene monomer in the gas storage tank 212 enters the mixing barrel 204 and undergoes polymerization reaction under the action of the catalyst to produce PVC material. After cooling, the staff controls the electric valve of the discharge pipe 214 to open through the controller 102 to take out the PVC material.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A polymerization device for PVC processing, characterized in that: include: A base (101), a turbine stirring device, a liquid circulation device, a purification device, and a controller (102); the turbine stirring device is arranged above the base (101) and is used to stir the raw materials; the liquid circulation device is arranged above the base (101) and is used to provide heat in the early stage of the polymerization reaction and to cool the polymerization reaction in the late stage; the purification device is arranged above the turbine stirring device and is used to purify the gas generated by the polymerization reaction; the controller (102) is arranged above the base (101), fixedly connected to the base (101), electrically connected to the turbine stirring device, and electrically connected to the liquid circulation device.

2. A polymerization equipment for PVC processing according to claim 1, characterized in that: The turbine stirring device comprises: a support (201), a reaction kettle (202), a conical partition (203), a stirring barrel (204), a motor (205), a reciprocating screw (206), a filter plate (207), a stirring rod (208), an electric valve (209), a plurality of stirring blades (210), a feed pipe (211), an air storage tank (212), an air intake pipe (213), and a discharge pipe (214); the support (201) is arranged above the base (101) and is fixedly connected to the base (101); the reaction kettle (202) is vertically arranged above the support (201) and is fixedly connected to the support (201); a discharge door is arranged on the top of the reaction kettle (202); the conical partition ( The axis of the mixing barrel (204) coincides with the axis of the reactor (202), the conical partition (203) is arranged inside the reactor (202), and its edge is closely attached to and fixedly connected to the reactor (202); the axis of the mixing barrel (204) coincides with the axis of the reactor, the mixing barrel (204) is arranged inside the reactor (202), and is arranged below the conical partition (203), and the top of the mixing barrel (204) is closely attached to and fixedly connected to the bottom surface of the conical partition (203); the axis of the rotating shaft of the motor (205) coincides with the axis of the reactor (202), the rotating shaft of the motor (205) passes through the upper part of the reactor (202), and the motor (205) is connected to the reactor (202). 02) is fixedly connected to the upper surface and electrically connected to the controller (102); the axis of the reciprocating screw (206) coincides with the axis of the rotating shaft of the motor (205), and is arranged above the conical partition (203) and below the rotating shaft of the motor (205); the upper end of the reciprocating screw (206) is fixedly connected to the rotating shaft of the motor (205); the filter plate (207) is horizontally arranged, arranged in the reactor (202), sleeved on the reciprocating screw (206), and arranged above the conical partition (203); the filter plate (207) is fixedly connected to the slider of the reciprocating screw (206), and the edge of the filter plate (207) is vertically slidably connected to the inner side of the reactor (202). The axis of the stirring rod (208) coincides with the axis of the rotating shaft of the motor (205), and passes through the bottom of the reaction kettle (202), the bottom of the stirring barrel (204), and the conical partition (203). The stirring rod (208) is arranged directly below the reciprocating screw rod (206). The upper end of the stirring rod (208) is fixedly connected to the lower end of the reciprocating screw rod (206). The stirring rod (208) is sealed and rotatably connected to the reaction kettle (202) and the stirring barrel (204), and its rotation axis is arranged vertically. The electric valve (209) passes through the conical partition (203) and is arranged on the side of the stirring rod (208). The electric valve (209) is fixedly connected to the conical partition (203).A plurality of stirring blades (210) are arranged in the stirring barrel (204) and sleeved on the stirring rod (208), and the plurality of stirring blades (210) are fixedly connected to the stirring rod (208); the feeding pipe (211) passes through the upper surface of the reaction kettle (202) and is arranged on the side of the motor (205); the feeding pipe (211) is communicated with the interior of the reaction kettle (202); the gas storage tank (212) is arranged above the base (101) and on the side of the bracket (201); the gas storage tank (212) is fixedly connected to the base (101); the outlet of the gas storage tank (212) An electric valve is provided at the gas port, and compressed polyethylene monomer is provided in the gas storage tank (212); the gas inlet pipe (213) passes through the side of the reaction kettle (202) and the side of the stirring barrel (204); the lower end of the gas inlet pipe (213) is in communication with the gas storage tank (212), and the upper end is in communication with the stirring barrel (204); the discharge pipe (214) passes through the side of the reaction kettle (202) and the stirring barrel (204) away from the gas storage tank (212), and is in communication with the inside of the stirring barrel (204); an electric valve is provided inside the discharge pipe (214), and the electric valve is electrically connected to the controller. ; 3. A polymerization equipment for PVC processing according to claim 2, characterized in that: The stirring rod (208) is rotatably connected to the reaction kettle (202) via a sealed bearing.

4. A polymerization equipment for PVC processing according to claim 2, characterized in that: The feed pipe (211) is provided with a sealing cover, and the sealing cover is threadedly connected to the feed pipe (211).

5. A polymerization equipment for PVC processing according to claim 2, characterized in that: A sealing ring is provided between the air inlet pipe (213) and the reaction kettle (202).

6. A polymerization equipment for PVC processing according to claim 2, characterized in that: The liquid circulation device comprises: a first sealed box (301), a second sealed box (302), a first piston (303), a second piston (304), an incomplete gear (305), two racks (306), a hot water tank (307), a cold water tank (308), a first connecting pipe (309), a second connecting pipe (310), a first water inlet pipe (311), a second water inlet pipe (312), a third water inlet pipe (313), a first electric three-way valve (314), a first water outlet pipe (315), a second water outlet pipe (316), a third water outlet pipe (317), a second electric three-way valve (318), and a temperature sensor (320); the first sealed box (301 ) axis is arranged horizontally, the first sealed box (301) is arranged above the base (101), below the reaction kettle (202), inside the bracket (201), and on the side of the stirring rod (208) close to the gas storage tank (212), and the first sealed box (301) is fixedly connected to the base (101); the axis of the second sealed box (302) coincides with the axis of the first sealed box (301), the second sealed box (302) and the first sealed box (301) are arranged symmetrically, and are arranged on the side of the stirring rod (208) away from the first sealed box (301), and the second sealed box (302) and the base (101) are arranged horizontally, the first sealed box (301) is arranged above the base (101), below the reaction kettle (202), inside the bracket (201), and on the side of the stirring rod (208) away from the first sealed box (301), and the second sealed box (302) and the base (101) are fixedly connected. The first piston (303) is arranged inside the first sealed box (301) and is connected to the first sealed box (301) in a sliding manner in the horizontal direction; the second piston (304) is arranged inside the second sealed box (302) and is connected to the second sealed box (302) in a sliding manner in the horizontal direction; the incomplete gear (305) is sleeved on the stirring rod (208), arranged below the reaction kettle (202), and arranged between the first sealed box (301) and the second sealed box (302); the incomplete gear (305) is fixedly connected to the stirring rod (208); the two racks (306) The two racks (306) are parallel to the axis of the first sealed box (301), and are symmetrically arranged. The two racks (306) are respectively arranged on both sides of the incomplete gear (305). The two racks (306) penetrate the side of the first sealed box (301) and the second sealed box (302) close to the incomplete gear (305). The two ends of the two racks (306) are respectively fixedly connected to the first piston (303) and the second piston (304). The two racks (306) are slidably connected to the first sealed box (301) and the second sealed box (302) in the horizontal direction, and cooperate with the incomplete gear (305);The hot water tank (307) is arranged between the gas storage tank (212) and the reactor (202), and is arranged above the base (101). The hot water tank (307) is fixedly connected to the base (101). A heating wire is arranged in the hot water tank (307). The heating wire is electrically connected to the controller. A water inlet is arranged on the top of the hot water tank (307). The cold water tank (308) is arranged between the gas storage tank (212) and the reactor (202), and is arranged on the side of the hot water tank (307). The cold water tank (308) is fixedly connected to the base (101). A refrigeration end of a cooler is arranged in the cold water tank (308). The cooler is electrically connected to the controller. The first connecting pipe (309) is arranged on the side of the first sealed box (301) away from the incomplete gear (305), the lower end of the first connecting pipe (309) is communicated with the side of the first sealed box (301) away from the incomplete gear (305), and the upper end is communicated with the interior of the reactor (202); the second connecting pipe (310) is arranged on the side of the second sealed box (302) away from the incomplete gear (305), the lower end of the second connecting pipe (310) is communicated with the side of the first sealed box (301) away from the incomplete gear (305), and the upper end is communicated with the interior of the reactor (202). The first water inlet pipe (311) is connected to the first sealed box (301) at one end, which is away from the incomplete gear (305); the second water inlet pipe (312) is connected to the hot water tank (307); the third water inlet pipe (313) is connected to the cold water tank (308); the three ports of the first electric three-way valve (314) are respectively connected to the other end of the first water inlet pipe (311), the other end of the second water inlet pipe (312), and the other end of the third water inlet pipe (313); the first electric three-way valve (314) is electrically connected to the controller (102); the first water outlet pipe (315) is connected to the second sealed box (302) at one end, which is away from the incomplete gear (305); The side of the full gear (305) is connected; one end of the second water outlet pipe (316) is connected to the hot water tank (307); one end of the third water outlet pipe (317) is connected to the cold water tank (308); three ports of the second electric three-way valve (318) are respectively connected to the other end of the first water outlet pipe (315), the other end of the second water outlet pipe (316), and the other end of the third water outlet pipe (317); the second electric three-way valve (318) is electrically connected to the controller (102); the temperature sensor (320) is arranged in the mixing barrel (204), the temperature sensor (320) is fixedly connected to the mixing tank, and is electrically connected to the controller (102). ; 7. A polymerization equipment for PVC processing according to claim 6, characterized in that: A plurality of one-way valves (319) are respectively arranged in the middle of the first connecting pipe (309), the second connecting pipe (310), the first water inlet pipe (311) and the first water outlet pipe (315); the plurality of one-way valves (319) are fixedly connected to the first connecting pipe (309), the second connecting pipe (310), the first water inlet pipe (311) and the first water outlet pipe (315).

8. A polymerization equipment for PVC processing according to claim 6, characterized in that: The purification device comprises: an adsorption box (401), a dust cover (402), an air diffusion hole (403), a connecting rod (404), an adsorption plate (405), a third connecting pipe (406), and a pressure valve (407); the adsorption box (401) is arranged above the reaction kettle (202), and is arranged on the side of the motor (205) away from the feeding pipe (211); the adsorption box (401) is fixedly connected to the reaction kettle (202); the dust cover (402) is arranged above the top of the adsorption box (401), and the dust cover (402) is fixedly connected to the adsorption box (401); the air diffusion hole (403) is arranged on the dust cover (402), and the air diffusion hole (403) is connected to the inside of the adsorption box (401); the connecting rod (404) is arranged vertically, passes through the upper part of the reaction kettle (202) and the bottom of the adsorption box (401), and is arranged above the filter plate (207) The lower end of the connecting rod (404) is fixedly connected to the filter plate (207); the connecting rod (404) is slidably connected to the adsorption box (401) in the vertical direction, and is slidably connected to the reaction kettle (202) in the vertical direction; the adsorption plate (405) is arranged inside the adsorption box (401), and is arranged above the connecting rod (404); the adsorption plate (405) is fixedly connected to the upper end of the connecting rod (404), and is slidably connected to the adsorption box ( 401) is slidably connected in the vertical direction; the third connecting pipe (406) passes through the side of the reaction kettle (202) and the side of the stirring barrel (204); the upper end of the third connecting pipe (406) is connected to the bottom of the adsorption box (401), and the lower end of the third connecting pipe (406) is connected to the stirring barrel (204); the pressure valve (407) is arranged in the middle of the third connecting pipe (406) and is fixedly connected to the third connecting pipe (406).

9. A polymerization device for PVC processing according to claim 8, characterized in that: The adsorption plate (405) is made of activated carbon.

10. A polymerization device for PVC processing according to claim 8, characterized in that: The dust cover (402) is fixedly connected to the adsorption box (401) via threads.

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