CN114452921B - Production system of polyvinyl chloride resin for cables - Google Patents
Production system of polyvinyl chloride resin for cables Download PDFInfo
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- CN114452921B CN114452921B CN202111607667.4A CN202111607667A CN114452921B CN 114452921 B CN114452921 B CN 114452921B CN 202111607667 A CN202111607667 A CN 202111607667A CN 114452921 B CN114452921 B CN 114452921B
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- reation kettle
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- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 27
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 27
- 239000011347 resin Substances 0.000 title claims abstract description 18
- 229920005989 resin Polymers 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000003860 storage Methods 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical group ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 abstract description 21
- 238000011084 recovery Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 25
- 239000007789 gas Substances 0.000 description 14
- 238000006116 polymerization reaction Methods 0.000 description 13
- 239000000178 monomer Substances 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000012752 auxiliary agent Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010558 suspension polymerization method Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000005452 food preservative Substances 0.000 description 1
- 235000019249 food preservative Nutrition 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F114/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F114/02—Monomers containing chlorine
- C08F114/04—Monomers containing two carbon atoms
- C08F114/06—Vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/01—Processes of polymerisation characterised by special features of the polymerisation apparatus used
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/34—Polymerisation in gaseous state
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention discloses a production system of polyvinyl chloride resin for cables, which comprises a raw material tank, a reaction kettle, a material storage tank, an air pump, an air storage tank, a stirring device, an electromagnetic valve and a controller, wherein the raw material tank is connected with a material inlet of the reaction kettle, the material storage tank is connected with a material outlet of the reaction kettle, one end of the air pump is connected with an air outlet of the reaction kettle, the other end of the air pump is connected with an air storage tank, the air storage tank is connected with an air inlet of the reaction kettle through a pipeline, the stirring device is arranged in the reaction kettle, the electromagnetic valve is arranged on the material inlet, the material outlet, the air outlet and the air inlet, and the air pump and the electromagnetic valve are connected with the controller through data wires. The invention can recycle gaseous chloroethylene to continue the reaction, reduce the load of recovery and separation in the later period, reduce the cost and have high preparation efficiency.
Description
Technical Field
The invention relates to the field of polyvinyl chloride production, in particular to a production system of polyvinyl chloride resin for cables.
Background
Polyvinyl chloride is a high molecular material in which one chlorine atom is used to replace one hydrogen atom in polyethylene, and is an amorphous polymer containing a small amount of crystalline structure. Polyvinyl chloride plastic products are very widely used, and polyvinyl chloride is widely used for various products in various industries due to the fireproof and heat-resistant effects of the polyvinyl chloride plastic products: wire sheath, fiber sheath, shoes, handbag, bag, ornament, sign and billboard, building decoration, furniture, hanging ornament, roller, throat, toy, door curtain, rolling door, auxiliary medical supplies, glove, some food preservative paper, some fashion, etc.
At present, most of the production of polyvinyl chloride adopts a polymerization method, and the polymerization method is mainly divided into a suspension polymerization method, an emulsion polymerization method and a bulk polymerization method, wherein the suspension polymerization method is mainly used, and the polymerization method accounts for about 80% of the total yield of the PVC.
Suspension polymerization method: the monomer is suspended and dispersed in water phase in the form of micro-drop, the oil-soluble initiator is dissolved in the monomer, the polymerization reaction is carried out in the micro-drop, the heat of polymerization reaction is absorbed by water in time, in order to ensure that the micro-drop is dispersed in water in the form of bead, the suspension stabilizer is needed to be added, and the polymerization is carried out in a polymerization kettle with a stirrer. After polymerization, the materials flow into a monomer recovery tank or a stripping tower to recover the monomers, then flow into a mixing kettle, and the resin finished product is obtained after water washing, centrifugal dehydration and drying. The vinyl chloride monomer should be removed as much as possible from the resin. In order to ensure that a resin having a prescribed molecular weight and molecular weight distribution range is obtained and to prevent explosion during polymerization, the temperature and pressure of the polymerization process must be controlled. The particle size and particle size distribution of the resin are controlled by the stirring speed and the selection and amount of the suspension stabilizer.
However, in the existing polyvinyl chloride preparation system, the mixed solvent is usually homogenized in advance, the reaction kettle needs stirring power, the reaction kettle needs to be stopped for discharging after the reaction, so that the preparation is discontinuous, the energy consumption is high, and for gaseous vinyl chloride monomer, a complex recovery system is needed until the gaseous vinyl chloride monomer is reprocessed into a pure state for reuse, the recovery cost is high, in addition, the existing reaction device is a reaction kettle for reaction completion and discharge, and then the reaction is carried out by recharging, so that the preparation is carried out at intervals, and the reaction efficiency is low.
Disclosure of Invention
The invention aims to provide a production system of polyvinyl chloride resin for cables, which aims to overcome the defects of the prior art.
In order to achieve the above object, the present invention is achieved by the following technical scheme.
The utility model provides a production system of polyvinyl chloride resin for cable, it includes head tank, reation kettle, storage tank, air pump, gas holder, agitating unit, solenoid valve, controller, the feed inlet of reation kettle is connected to the head tank, the discharge gate of reation kettle is connected to the storage tank, the gas outlet of reation kettle is connected to the one end of air pump, and the gas holder is connected to the other end, the gas holder passes through the air inlet of pipe connection reation kettle, be provided with agitating unit in the reation kettle, all be provided with the solenoid valve on feed inlet, discharge gate, gas outlet, the air inlet, solenoid valve pass through data line connection director.
Further, be provided with the baffle in the jar of head tank, the bottom of head tank is provided with the three-way valve, the three-way valve is the Y font, be provided with the solenoid valve on two ports of the top side of three-way valve respectively, the port connection feed inlet of bottom side.
Further, the top of reation kettle is provided with the feed inlet, the inboard of feed inlet is provided with agitating unit, the both sides of feed inlet are provided with gas outlet, air exit respectively, be provided with the solenoid valve on the air exit, the side of air exit is provided with pressure sensor, pressure sensor passes through the data line connection director.
Further, the side of reation kettle sets up the pan feeding mouth, the outside of pan feeding mouth is provided with the solenoid valve, the inboard of pan feeding mouth is provided with L shape material pipe.
Further, set up into mouth of a river, delivery port on reation kettle's the lateral wall, set up spiral cooling tube on reation kettle's the inner wall, the cooling tube links into mouth of a river, delivery port respectively, the outside of mouth of a river is provided with T shape three-way pipe, be provided with the solenoid valve on the three-way pipe, reation kettle's the bottom of lateral wall sets up temperature sensor, temperature sensor passes through data line connection director.
Further, the middle part of reation kettle's bottom is provided with the discharge gate, the storage tank is connected to the discharge gate, the side of discharge gate sets up the air inlet, the inboard of air inlet is provided with the annular pipe, be provided with a plurality of air cock on the annular pipe, the air cock slope upwards sets up.
Further, the included angle between the central axis of the aeration nozzle and the horizontal plane is 45 degrees to 60 degrees.
Further, agitating unit includes antifriction bearing, unloading pipe, row flitch, row material pipe, check valve, antifriction bearing sets up the inboard in the feed inlet bottom, be provided with the unloading pipe in antifriction bearing's the inner circle, the side symmetry of the bottom of unloading pipe is provided with row flitch, be provided with row material pipe on the row flitch, be provided with the check valve in the row material pipe, row flitch is the cavity setting, the cross-section of row flitch is trapezoidal form, one side that row flitch is close to the unloading pipe is narrower than one side that keeps away from the unloading pipe, row material pipe is triangular distribution on row flitch's side.
Further, the controller is a PLC controller.
The invention has the beneficial effects that: 1. the invention can recycle gaseous chloroethylene to make it react continuously, reduce the load of recovery and separation in later period and reduce the cost; 2. the recycled gaseous vinyl chloride is used, so that on one hand, the generated polyvinyl chloride can be accelerated to settle and be convenient to discharge, and on the other hand, the mixing of the auxiliary agent and the vinyl chloride is accelerated, and the reaction efficiency is improved; 3. the high-pressure chloroethylene blanking pressure is utilized to automatically stir, so that energy sources are saved, and the production cost is reduced; 4. the reaction system can continuously react and has high preparation efficiency.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic top view of the annular tube and vent nozzle of the present invention;
FIG. 3 is a schematic view of a discharge plate and a discharge structure according to the present invention;
In the figure: 1. a raw material tank; 2. a reaction kettle; 3. a storage tank; 4. an air pump; 5. a gas storage tank; 6. a stirring device; 7. an electromagnetic valve; 8. a controller; 9. a pressure sensor; 10. a temperature sensor; 11. a partition plate; 12. a three-way valve; 21. a feed inlet; 22. a discharge port; 23. an air outlet; 24. an air inlet; 25. an air outlet; 26. a feed inlet; 261. a material pipe; 27. a water inlet; 28. a water outlet; 29. a cooling tube; 271. a three-way pipe; 241. an annular tube; 242. an aeration nozzle; 61. a rolling bearing; 62. discharging pipes; 63. a discharge plate; 64. a discharge pipe; 65. a one-way valve.
Detailed Description
The invention is further illustrated, but is not limited to, the following examples.
As shown in the figure: a production system of polyvinyl chloride resin for cables comprises a raw material tank 1, a reaction kettle 2, a material storage tank 3, an air pump 4, an air storage tank 5, a stirring device 6, an electromagnetic valve 7 and a controller 8.
The feed inlet 21 of reation kettle 2 is connected to head tank 1, and the discharge gate 22 of reation kettle 2 is connected to storage tank 3, and the gas outlet 23 of reation kettle 2 is connected to one end of air pump 4, and gas holder 5 is connected to the other end, and gas holder 5 passes through the air inlet 24 of pipe connection reation kettle 2, is provided with agitating unit 6 in the reation kettle 2, all is provided with solenoid valve 7 on feed inlet 21, discharge gate 22, gas outlet 23, the air inlet 24, and air pump 4, solenoid valve 7 pass through data line connection director 8.
The raw material tank 1 is a high-pressure tank, a partition plate 11 is arranged in the tank, the tank body is divided into two parts, one part is filled with vinyl chloride monomer, and the other part is filled with liquid nitrogen. Further, the bottom of the material tank 1 is provided with a three-way valve 12, the three-way valve 12 is Y-shaped, two ports on the top side of the three-way valve 12 are respectively arranged at the discharge nozzle of the material tank 1 and are provided with electromagnetic valves 7, and the ports on the bottom side are connected with a feed inlet 21, so that the opening or closing of the electromagnetic valves can be controlled, and the discharging of chloroethylene or nitrogen can be controlled.
The reactor 2 is the main apparatus for producing of this system, the top of reactor 2 is provided with feed inlet 21, the outside of feed inlet 21 is provided with three-way valve 12, the inboard of feed inlet 21 is provided with agitating unit 6, the both sides of feed inlet 21 are provided with gas outlet 23, air exit 25 respectively, gas outlet 23 is used for retrieving the gaseous state vinyl chloride in the reaction process, air exit 25 is used for getting rid of the air in the reactor 2 before the polymerization to and play the effect of a relief valve, when the long-time too high of reactor 2 internal pressure, accessible air exit 25 pressure release is provided with solenoid valve 7 on the air exit 25. In order to monitor the pressure in the reaction kettle 2 in real time, the side edge of the air outlet 25 is provided with a pressure sensor 9.
In order to add auxiliaries such as deionized water, an initiator, a fixing agent and the like into the reaction kettle 2, a feed inlet 26 can be arranged on the side edge of the reaction kettle 2, an electromagnetic valve 7 is arranged on the outer side of the feed inlet 26, an L-shaped material pipe 261 is arranged on the inner side of the feed inlet 26, so that the auxiliaries can be timely supplemented into the reaction kettle in the polymerization process, and continuous reaction is facilitated.
In order to control the reaction temperature in the reaction kettle 2, a water inlet 27 and a water outlet 28 can be formed in the side wall of the reaction kettle 2, a spiral (like a spring) cooling pipe 29 is arranged on the inner wall of the reaction kettle 2, the cooling pipe 29 is respectively connected with the water inlet 27 and the water outlet 28, the water inlet 27 is positioned at the bottom side of the water outlet 28, further, in order to facilitate the heating of hot water or the cooling of cold water in the reaction kettle 2, a T-shaped three-way pipe 271 is arranged on the outer side of the water inlet 27, an electromagnetic valve 7 is arranged on the three-way pipe 271, one end of the three-way pipe 271 is connected with a hot water pipe, the other end is connected with a cold water pipe, and the opening of the electromagnetic valve 7 is controlled so as to facilitate the cooling of cold water or the heating of the hot water in the reaction kettle 2. The cooling pipe 29 is directly arranged on the inner wall of the reaction kettle 2, is convenient to contact with the auxiliary agent, and is directly heat-exchanging and high in heat exchanging efficiency.
The middle part of the bottom of reation kettle 2 is provided with discharge gate 22, and discharge gate 22 connects storage tank 3, is convenient for in time discharge the polyvinyl chloride that the reaction produced. Meanwhile, in order to monitor the reaction temperature of the reaction kettle 2, a temperature sensor 10 may be provided at a side of the reaction kettle 2.
In addition, in order to fully utilize the vinyl chloride, reduce the load of recovery and separation, save the cost, can set up the air inlet 24 in the bottom side of the reaction kettle 2, the inboard of air inlet 24 is provided with the annular pipe 241, be provided with a plurality of vent nozzles 242 on the annular pipe 241, the vent nozzles 242 slope upwards set up, the axis of vent nozzles 242 is 45-60 with the contained angle of horizontal plane, in the plan view, the contained angle between the axis of vent nozzles 242 and the tangent line of annular pipe 241 is 30-45, after annular pipe 241 ventilates, the vent nozzles 242 blowout air current (gaseous vinyl chloride), make the auxiliary agent of bottom rotatory, form the vortex, help the polyvinyl chloride of reaction to sink and discharge like cyclone dust's principle like this, in addition, the gaseous vinyl chloride of letting in is more easy to contact with the auxiliary agent, help utilizing gaseous vinyl chloride reaction, reach the purpose of reutilization, reduce the recovery load.
The storage tank 3 is used for recycling polyvinyl chloride generated by the reaction, so that the subsequent stripping recovery is facilitated.
The air pump 4 is used for recycling gaseous chloroethylene at the top end of the inner side of the reaction kettle 2 to the air storage tank 5.
The gas tank 5 is used for storing the recovered gaseous vinyl chloride.
The stirring device 6 comprises a rolling bearing 61, a discharging pipe 62, a discharging plate 63, a discharging pipe 64 and a one-way valve 65, wherein the rolling bearing 61 is arranged on the inner side of the bottom end of the feeding hole 21, the discharging pipe 62 is arranged in the inner ring of the rolling bearing 61, the discharging plate 63 is symmetrically arranged on the side surface of the bottom end of the discharging pipe 62, the discharging pipe 64 is arranged on the discharging plate 63, the one-way valve 65 is arranged in the discharging pipe 64, the discharging plate 63 is further arranged in a hollow mode, the cross section of the discharging plate 63 is trapezoid, the outer side of the discharging plate is wide, one side close to the discharging pipe 62 is narrow, the discharging plate 63 is driven to rotate, stirring is achieved, the discharging pipe 64 is at least two, and is uniformly arranged on the bottom end of the discharging pipe 62, on the other hand, the discharging pipe 64 is distributed on the side surface of the discharging plate 63 in a triangular shape, and the bottom edge of the triangle is located on one side far away from the discharging pipe 62. Because the pressure in the raw material tank 1 is greater than the pressure in the reaction kettle 2, when the raw material is sprayed out through the discharge pipe 64, the discharge plate 63 is pushed to move in the opposite direction of the spraying of the material liquid due to the reaction force, so that the auxiliary agent in the reaction kettle 2 is automatically stirred by utilizing the pressure difference of the material liquid, the purpose of feeding and reacting at the same time is achieved, and the sensing continuity is ensured.
The solenoid valve 7 is operable to be turned on and off under the control of a controller 8.
The controller 8 is a PLC controller, and is capable of controlling the operation of each device.
The pressure sensor 9 and the temperature sensor 10 respectively monitor the pressure and the temperature in the reaction kettle 2, so that the related operation can be controlled conveniently, and the pressure sensor 9 and the temperature sensor 10 are respectively connected with the controller 8 through data lines.
The application principle of the invention is as follows: the method is characterized in that nitrogen is introduced into the reaction kettle at the beginning, air in the reaction kettle is discharged through an air outlet, then the air outlet is closed, various needed auxiliary agents are added into the reaction kettle through the feed inlet, nitrogen is continuously introduced, a discharge plate is rotated and stirred, meanwhile, hot water is introduced into the reaction kettle through the water inlet for heating, after the set pressure and temperature are reached, discharging is switched, vinyl chloride monomer is introduced into the reaction kettle, cold water is introduced from the water inlet for cooling, the temperature in the reaction kettle is increased along with the progress of the reaction, gaseous vinyl chloride monomer is increased, the pressure in the reaction kettle is increased, the induction acceleration is carried out, the cooling capacity of the cold water is increased, the temperature is reduced, an air outlet is opened for discharging the gaseous vinyl chloride at the top of the reaction kettle, an air inlet valve is opened for reducing the pressure of the reaction kettle, on the one hand, the gaseous vinyl chloride is recycled on the one hand, the generated polyvinyl chloride is accelerated for sedimentation is started, and simultaneously, the electromagnetic valve is continuously supplied to the reaction kettle for discharging, so that the dynamic polymerization reaction efficiency is improved, and the preparation efficiency is achieved.
It should be understood that the above-described embodiments of the present invention are provided by way of example only and are not intended to limit the scope of the invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Not all embodiments are exhaustive. All obvious changes or modifications which come within the spirit of the invention are desired to be protected.
Claims (7)
1. A production system of polyvinyl chloride resin for cables is characterized in that: it includes head tank (1), reation kettle (2), storage tank (3), air pump (4), gas holder (5), agitating unit (6), solenoid valve (7), controller (8), feed inlet (21) of reation kettle (2) are connected to head tank (1), discharge gate (22) of reation kettle (2) are connected to storage tank (3), gas outlet (23) of reation kettle (2) are connected to one end of air pump (4), gas holder (5) are connected to the other end, gas holder (5) are through air inlet (24) of pipe connection reation kettle (2), be provided with agitating unit (6) in reation kettle (2), all be provided with solenoid valve (7) on feed inlet (21), discharge gate (22), gas outlet (23), gas inlet (24), air pump (4), solenoid valve (7) pass through data line connection controller (8),
The middle part of the bottom end of the reaction kettle (2) is provided with a discharge hole (22), the discharge hole (22) is connected with a storage tank (3), the side edge of the discharge hole (22) is provided with an air inlet (24), the inner side of the air inlet (24) is provided with an annular pipe (241), the annular pipe (241) is provided with a plurality of ventilation nozzles (242), the ventilation nozzles (242) are obliquely upwards arranged,
The included angle between the central axis of the ventilation nozzle (242) and the horizontal plane is 45-60 degrees.
2. The production system of polyvinyl chloride resin for cables according to claim 1, wherein: be provided with baffle (11) in the jar of head tank (1), the bottom of head tank (1) is provided with three-way valve (12), three-way valve (12) are the Y font, be provided with solenoid valve (7) on two ports of the top side of three-way valve (12) respectively, the port connection feed inlet (21) of bottom side.
3. The production system of polyvinyl chloride resin for cables according to claim 1, wherein: the reactor is characterized in that a feeding hole (21) is formed in the top end of the reaction kettle (2), a stirring device (6) is arranged on the inner side of the feeding hole (21), an air outlet (23) and an air outlet (25) are respectively formed in two sides of the feeding hole (21), an electromagnetic valve (7) is arranged on the air outlet (25), a pressure sensor (9) is arranged on the side edge of the air outlet (25), and the pressure sensor (9) is connected with a controller (8) through a data line.
4. The production system of polyvinyl chloride resin for cables according to claim 1, wherein: the side of reation kettle (2) is provided with pan feeding mouth (26), the outside of pan feeding mouth (26) is provided with solenoid valve (7), the inboard of pan feeding mouth (26) is provided with L shape material pipe (261).
5. The production system of polyvinyl chloride resin for cables according to claim 1, wherein: set up water inlet (27), delivery port (28) on the lateral wall of reation kettle (2), set up spiral cooling tube (29) on the inner wall of reation kettle (2), cooling tube (29) link respectively water inlet (27), delivery port (28), the outside of water inlet (27) is provided with T shape three-way pipe (271), be provided with solenoid valve (7) on three-way pipe (271), the bottom of the lateral wall of reation kettle (2) sets up temperature sensor (10), temperature sensor (10) pass through data line connection director (8).
6. The production system of polyvinyl chloride resin for cables according to claim 1, wherein: stirring device (6) are including antifriction bearing (61), unloading pipe (62), row flitch (63), row material pipe (64), check valve (65), antifriction bearing (61) set up the inboard in feed inlet (21) bottom, be provided with unloading pipe (62) in the inner circle of antifriction bearing (61), the side symmetry of the bottom of unloading pipe (62) is provided with row flitch (63), be provided with row material pipe (64) on row material board (63), be provided with check valve (65) in row material pipe (64), row material board (63) are the cavity setting, the cross-section of row material board (63) is the trapezoid, one side that row material board (63) is close to unloading pipe (62) is narrower than one side that keeps away from unloading pipe (62), row material pipe (64) are triangle-shaped's distribution on the side of row material board (63).
7. The production system of polyvinyl chloride resin for cables according to claim 1, wherein: the controller (8) is a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111607667.4A CN114452921B (en) | 2021-12-27 | 2021-12-27 | Production system of polyvinyl chloride resin for cables |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111607667.4A CN114452921B (en) | 2021-12-27 | 2021-12-27 | Production system of polyvinyl chloride resin for cables |
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| Publication Number | Publication Date |
|---|---|
| CN114452921A CN114452921A (en) | 2022-05-10 |
| CN114452921B true CN114452921B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111607667.4A Active CN114452921B (en) | 2021-12-27 | 2021-12-27 | Production system of polyvinyl chloride resin for cables |
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|---|---|---|---|---|
| EP0191877A1 (en) * | 1985-02-16 | 1986-08-27 | Toyo Soda Manufacturing Co., Ltd. | Apparatus for gas phase polymerization of vinyl chloride |
| CN1179434A (en) * | 1996-09-25 | 1998-04-22 | 智索公司 | Apparatus for recovering unreacted monomers in vinyl chloride polymerization apparatus and recovery process |
| JPH10152522A (en) * | 1996-09-25 | 1998-06-09 | Chisso Corp | Apparatus for recovering unreacted monomer in vinyl chloride polymerization facility and recovery therefor |
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