CN2839283Y - Large polyfurnace for chloroethene mass polymerization - Google Patents

Large polyfurnace for chloroethene mass polymerization Download PDF

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Publication number
CN2839283Y
CN2839283Y CN 200520092412 CN200520092412U CN2839283Y CN 2839283 Y CN2839283 Y CN 2839283Y CN 200520092412 CN200520092412 CN 200520092412 CN 200520092412 U CN200520092412 U CN 200520092412U CN 2839283 Y CN2839283 Y CN 2839283Y
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China
Prior art keywords
kettle
last
agitator
following
stirrer
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Expired - Lifetime
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CN 200520092412
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Chinese (zh)
Inventor
张树万
谷文涛
罗忠新
王忠宏
张学刚
王荣梅
郝文生
张洪伟
冯文广
王金才
王立新
郭灵
宋建华
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AVIC Liming Jinxi Chemical Machinery (Group) Co., Ltd.
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JINXI CHEMICAL MACHINERY (GROUP) CO Ltd
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Priority to CN 200520092412 priority Critical patent/CN2839283Y/en
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Abstract

A large polymerization still for vinyl chloride mass polymerization includes a kettle, a transmission device, a stirrer, and a polymerization DCS control system. The utility model is characterized in that the transmission device includes an upper transmission device and a lower transmission device respectively set on the top and bottom of the kettle. The stirrer includes an upper stirrer and a lower stirrer respectively set on the top and bottom in the kettle. The out wall of the straight segment of the kettle is equipped with a quick-opening manhole and a screw semi-canal jacket. The out wall of the bottom of the kettle is equipped with a screw diversion jacket. The advantages of the utility model are that the upper and lower transmission forms are simultaneously adopted. The upper adopts a helix stirrer and the lower adopts scraper type stirrer with cooling water in the stirrer to enhance heat transferring effect of the equipment. At the same time, stirring strength shear force and times of cycle are improved to make the particle of the product centralized and homogeneous. The two devices have opposite rotary direction. The lower stirrer assists the upper stirrer to lift material so as to enhance the stirring heat transferring effect. The large polymerization still for vinyl chloride mass polymerization has advantages of high rate of porosity, high purity, good insulating property, better shape of the particles, homogeneous distribution of molecular weight, high smoke absorption rate and little black-yellow points and crystal points.

Description

The large-scale polymeric kettle of vinylchlorid mass polymerization
(1) technical field
The utility model relates to a kind of polymeric kettle, is specifically related to a kind of large-scale polymeric kettle of vinylchlorid mass polymerization.
(2) background technology
In the polyvinyl chloride resin production process, polymeric kettle is a main production equipments.Its technical feature quality directly has influence on output, quality and the performance driving economy of polyvinyl chloride.At present, homemade polyvinyl chloride suspension method and all types of polymeric kettles of emulsion method have been widely used in China's polyvinyl chloride (PVC) RESINS industry, but expose the defective and the deficiency of existence in the long-term production practice gradually.Complex process, unit volume is little, power consumption is high, and facility investment height, production efficiency are low relatively.The substance law synthesizing polyvinyl chloride resin is emerging explained hereafter method, has that production technique is simple, characteristics of facility compact and good product performance.Along with the polyvinyl chloride industrial expansion, polymeric kettle is also towards technology is simple, most economical, production efficiency is high, construction and maintenance cost is low, good product quality, direction that output is big develop.
Adopted mechanical seal as the axle front cover of polymeric kettle in the past, found in secular operation and use that mechanical seal existed machining difficulty height, dismounting maintenance difficulty; Especially consumable accessory is changed frequently, and device fabrication cost and running cost improve greatly.
In polyvinyl chloride suspension method and emulsion method polymerization process, exist problems such as sticking still, product particle are inhomogeneous, heat-transfer effect difference always, have a strong impact on the quality of polyvinyl chloride product; Sticking especially still problem is an open question all the time in the Production of PVC process.In the general Production of PVC process, all to influence the performance of polymeric kettle throughput after the polymerization each time to cleaning in the still.And the generation of the problems referred to above is outside the Pass having with the relevant device annex, also relevant with the polymeric kettle of selective polymerization method.
The polymeric kettle type of cooling generally has chuck cooling (comprising conventional jacket, spiral stream guidance chuck), inner cool tube cooling.Also all there are many disadvantages in these structures, utilize conventional jacket when cooling because water coolant is entered by the chuck end opening, through the chuck ring go straight up to and on, by outflow suitable for reading, flow velocity is very low, turbulent flow is not enough, the cooling performance extreme difference.Make moderate progress though adopt the spiral stream guidance chuck to conduct heat, because of being subjected to the restriction of machining manufacturing, and " dead angle " and " short circuit " appear in water coolant easily, make heat transfer coefficient low, so its method of cooling also haves much room for improvement.Though as cold apron and inner cool tube improve whipped state, strengthen the Cooling Heat Transfer effect in adding, because equipment directly adds interior cold apron and inner cool tube, have increased power of agitator greatly, thereby have increased the manufacturing cost and the production cost of equipment greatly.Because device interior is complex-shaped, the very easily sticking still of material causes the interior material of final cleaning still to bring difficulty simultaneously.
(3) summary of the invention
The technical problems to be solved in the utility model provides the large-scale polymeric kettle of a kind of production efficiency height, construction, operation and maintenance cost is low, output is big vinylchlorid mass polymerization.
The technical scheme that adopts is:
The large-scale polymeric kettle of vinylchlorid mass polymerization, comprise kettle, transmission mechanism, agitator, polyreaction DCS Controlling System, transmission mechanism comprises top transmission mechanism that is installed on the kettle top exterior walls and the underdrive device that is installed on the autoclave body bottom outer wall, agitator comprises last agitator that is installed in the kettle internal upper part and the following agitator that is installed in the kettle inner bottom part, kettle straight section outer wall is installed with the spiral half-pipe jacket, and the spiral half-pipe jacket can obtain bigger water coolant flow velocity 3~4m/S with less flow; Its many imports and multiple exit mode can be bigger the raising coefficient of heat transfer, heat transfer coefficient can reach 980kcal/m 2℃ hr; Adopt the spiral half-pipe jacket both to increase the rigidity of kettle, avoided cooling off in the process of cooling simultaneously " dead angle " and " short circuit " phenomenon effectively; Be installed with the spiral stream guidance chuck on the autoclave body bottom outer wall; Kettle cylindrical shell bottom is installed with the quick opening manhole of band interlock.
Above-mentioned kettle volume is 50-150m 3, length-to-diameter ratio is 1.1~1.4, highly is 14~28m, nominal diameter is 2~5m.
Transmission mechanism of the present utility model adopts upper plug type and down inserting type structure formation simultaneously, is called transmission mechanism and underdrive device.
The last electric motor of above-mentioned last transmission mechanism, go up step-down gear, head bearing box and be installed in respectively on the last transmission mechanism frame that the kettle top exterior walls sets firmly, the last electric motor that disposes variable-frequence governor is connected with last step-down gear by last resilient coupling, the bearing of last step-down gear is connected with last agitator stir shaft by last conical surface solid coupling, the head bearing box is installed with bearing, head bearing box below is installed with packing seal, last packing seal is installed on the kettle top exterior walls, and last packing seal is equiped with hydro-cylinder;
The following electric motor of above-mentioned underdrive device, following step-down gear, lower bearing box are installed in respectively on the underdrive device frame that sets firmly on the autoclave body bottom outer wall, following electric motor passes through down, and resilient coupling is connected with following step-down gear, the bearing of following step-down gear passes through down, and conical surface solid coupling is connected with following agitator stir shaft, the lower bearing box is installed with bearing, the top of lower bearing box is installed with packing seal, following packing seal is installed on the autoclave body bottom outer wall, and hydro-cylinder is disposed down in following packing seal.General large-scale still axle envelope adopts mechanical seal, machining difficulty height, dismounting maintenance difficulty; Especially consumable accessory is changed frequently, increases device fabrication cost and running cost.The upper and lower transmission mechanism of the utility model polymeric kettle all adopts V-type to gather the tetrafluoro packing seal, utilizes the hydro-cylinder external pressurized to realize sealing and cooling.Because adopt cheap poly-tetrafluoro V-type packing seal, the manufacturing cost of polymeric kettle reduces greatly, and it is very convenient to change filler, improves production efficiency of equipment, reduces maintenance cost and difficulty.
The above-mentioned agitator of going up comprises the agitator stir shaft, and last agitator stir shaft is installed with ribbon impeller, is installed with the cocycle cooling-water duct in the last agitator, and last cooling water inlet and cocycle water out are installed on the step-down gear.
Above-mentioned bottom agitator comprises stir shaft down, and following agitator stir shaft is installed with the scraper type stirring rake, is installed with the recirculated cooling water passage in the following agitator, and following cooling water inlet and following circulating water outlet are installed in down the step-down gear below.
Kettle top is provided with helix agitator, and the inner hollow structure that adopts of agitator is convenient to the water coolant circulation so as to remedying chuck heat exchange deficiency.The agitator system coefficient of heat transfer can reach 950~1100kcal/m 2℃ hr, its heat transfer area is a chuck heat transfer area 18%, conducts 23% of whole polymerization reaction heat.Illustrate that thus its heat transfer efficiency is more much higher than chuck.Because polymeric kettle adopts upper and lower transmission mechanism simultaneously, utilizes agitator to carry out Stirring heat transfer.Equipment stirring, heat-transfer effect have been improved; Effectively reduce internals, make the kettle interior shape simple, last transmission mechanism adopts RHVC, make the polymeric kettle mixing speed be adjusted to optimum regime, it is more moderate that entire equipment stirs shearing force, and reaction is evenly carried out, and is suitable for solid particulate below 10 orders, concentration is less than 50%, the chloroethylene polymerization of viscosity below 110 centipoises.
Polyreaction DCS Controlling System is for than the novel process process control system.Realize polymerization temperature automatization control by the DCS Controlling System, in conjunction with the above-mentioned type of cooling, polymerization temperature variations can be controlled in 0.1~0.2 ℃ of scope, with the heat transfer property of effective control still, thereby avoids Stirring heat transfer temperature control phenomenon.
(4) description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the present utility model.
Fig. 2 is a transmission structures synoptic diagram on the utility model.
Fig. 3 is the utility model underdrive apparatus structure synoptic diagram.
Fig. 4 is following agitator local structure synoptic diagram (front view).
Fig. 5 is following agitator local structure synoptic diagram (vertical view).
Fig. 6 is the kettle structure synoptic diagram that is equiped with the spirrillum semicanal.
(5) specific embodiment
Embodiment one
The large-scale polymeric kettle of vinylchlorid mass polymerization comprises kettle 1, transmission mechanism, agitator, polyreaction DCS Controlling System; Transmission mechanism comprises the last transmission mechanism 2 that is installed in kettle 1 top and the underdrive device 3 of bottom, agitator comprises the last agitator 4 that is installed in kettle 1 internal upper part and the following agitator 5 of bottom, be installed with spiral half-pipe jacket 22 on the kettle 1 straight section outer wall, be installed with spiral stream guidance chuck 23 on kettle 1 bottom outer wall, kettle 1 straight section outer wall is installed with the quick opening manhole 21 of band interlock; Kettle 1 volume is 50m 3, length-to-diameter ratio is 1.2, highly is 14m, nominal diameter is 3.45m; The last electric motor 7 of last transmission mechanism 2, go up step-down gear 9, head bearing box 11 and be installed in respectively on the last transmission mechanism frame 6 that kettle 1 top exterior walls sets firmly, the last electric motor that disposes variable-frequence governor 8 is connected with last step-down gear 9 by last resilient coupling 13, the bearing 10 of last step-down gear 9 is connected with last agitator stir shaft 17 by last conical surface solid coupling 14, head bearing box 11 is installed with bearing 12, head bearing box 11 belows are installed with packing seal 15, last packing seal 15 is installed on kettle 1 top exterior walls, and last packing seal 15 is equiped with hydro-cylinder 16; The following electric motor 25 of underdrive device 3, following step-down gear 27, lower bearing box 30 are installed in the underdrive device that sets firmly on kettle 1 bottom outer wall respectively, on the frame 24, following electric motor 25 passes through down, and resilient coupling 26 is connected with following step-down gear 27, the bearing 28 of following step-down gear 27 passes through down, and conical surface solid coupling 29 is connected with following agitator stir shaft 34, lower bearing box 30 is installed with bearing 31, the top of lower bearing box 30 is installed with packing seal 32, following packing seal 32 is installed on kettle 1 bottom outer wall, and hydro-cylinder 33 is disposed down in following packing seal 32; Last agitator 4 comprises agitator stir shaft 17, and last agitator stir shaft 17 is installed with ribbon impeller 18, is installed with cocycle cooling-water duct 38 in the last agitator 4, and last cooling water inlet 19 and cocycle water out 20 are installed on the step-down gear 9; Following agitator 5 comprises agitator stir shaft 34 down, and following agitator stir shaft 34 is installed with scraper type stirring rake 35, is installed with recirculated cooling water passage 39 in the following agitator 5, and following cooling water inlet 36 and following circulating water outlet 37 are installed in down step-down gear 27 belows; The polyreaction Controlling System adopts the DCS Controlling System.
Embodiment two:
Embodiment two and embodiment one are basic identical, and difference is: kettle volume 70m 3, length-to-diameter ratio 1.2, height 16m, kettle nominal diameter 3.9m.
Embodiment three:
Embodiment three and embodiment one are basic identical, and difference is: the kettle volume is 130m 3, length-to-diameter ratio 1.2, height 28m, kettle nominal diameter 5m.

Claims (9)

1, the large-scale polymeric kettle of vinylchlorid mass polymerization, comprise kettle (1), transmission mechanism, agitator, polyreaction DCS Controlling System, it is characterized in that: transmission mechanism comprises the last transmission mechanism (2) that is installed in kettle (1) top and the underdrive device (3) of bottom, agitator comprises the last agitator (4) that is installed in kettle (1) internal upper part and the following agitator (5) of bottom, be installed with quick opening manhole (21), spiral half-pipe jacket (22) on kettle (1) the straight section outer wall, be installed with spiral stream guidance chuck (23) on kettle (1) bottom outer wall.
2, the large-scale polymeric kettle of vinylchlorid mass polymerization according to claim 1 is characterized in that described kettle (1) volume is 50~150m 3, length-to-diameter ratio is 1.1~1.4, highly is 14~28m, nominal diameter is 2~5m.
3, the large-scale polymeric kettle of vinylchlorid mass polymerization according to claim 2 is characterized in that described kettle (1) volume is 50m 3, length-to-diameter ratio is 1.2, highly is 14m, nominal diameter is 3.45m.
4, the large-scale polymeric kettle of vinylchlorid mass polymerization according to claim 2 is characterized in that described kettle (1) volume is 70m 3, length-to-diameter ratio is 1.2, highly is 16m, nominal diameter is 3.9m.
5, the large-scale polymeric kettle of vinylchlorid mass polymerization according to claim 2 is characterized in that described kettle (1) volume is 130m 3, length-to-diameter ratio is 1.2, highly is 28m, nominal diameter is 5m.
6, the large-scale polymeric kettle of vinylchlorid mass polymerization according to claim 1, it is characterized in that the described last electric motor (7) of going up transmission mechanism (2), last step-down gear (9), head bearing box (11) is installed in respectively on the last transmission mechanism frame (6) that kettle (1) top exterior walls sets firmly, the last electric motor (7) that disposes variable-frequence governor (8) is connected with last step-down gear (9) by last resilient coupling (13), the bearing (10) of last step-down gear (9) is connected with last agitator stir shaft (17) by last conical surface solid coupling (14), head bearing box (11) is installed with bearing (12), head bearing box (11) below is installed with packing seal (15), last packing seal (15) is installed on kettle (1) top exterior walls, and last packing seal (15) is installed with hydro-cylinder (16).
7, the large-scale polymeric kettle of vinylchlorid mass polymerization according to claim 1, the following electric motor (25) that it is characterized in that described underdrive device (3), following step-down gear (27), lower bearing box (30) is installed in respectively on the underdrive device frame (24) that sets firmly on kettle (1) bottom outer wall, following electric motor (25) passes through down, and resilient coupling (26) is connected with following step-down gear (27), the bearing (28) of following step-down gear (27) passes through down, and conical surface solid coupling (29) is connected with following agitator stir shaft (34), lower bearing box (30) is installed with bearing (31), the top of lower bearing box (30) is installed with down packing seal (32), following packing seal (32) is installed on kettle (1) bottom outer wall, and hydro-cylinder (33) is disposed down in following packing seal (32).
8, the large-scale polymeric kettle of vinylchlorid mass polymerization according to claim 1, it is characterized in that the described agitator (4) of going up comprises agitator stir shaft (17), last agitator stir shaft (17) is installed with ribbon impeller (18), be installed with cocycle cooling-water duct (38) in the last agitator (4), last cooling water inlet (19) and cocycle water out (20) are installed on the step-down gear (9).
9, the large-scale polymeric kettle of vinylchlorid mass polymerization according to claim 1, it is characterized in that described agitator (5) down comprises agitator stir shaft (34) down, following agitator stir shaft (34) is installed with scraper type stirring rake (35), be installed with recirculated cooling water passage (39) in the following agitator (5), following cooling water inlet (36) and following circulating water outlet (37) are installed in down step-down gear (27) below.
CN 200520092412 2005-09-08 2005-09-08 Large polyfurnace for chloroethene mass polymerization Expired - Lifetime CN2839283Y (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100443158C (en) * 2007-04-13 2008-12-17 青岛伊科思新材料股份有限公司 Helix stirred reactor with cryogen gong through inside, application, and technical method of polyreaction
CN101596438B (en) * 2009-07-10 2011-11-30 浙江大学 Adjustable biaxial reaction kettle for stirring variable physical property medium
CN102854860A (en) * 2012-09-05 2013-01-02 江苏申久化纤有限公司 Scraper control method and device for polycondensation reaction kettle
CN106732266A (en) * 2016-12-16 2017-05-31 无锡力马化工机械有限公司 A kind of big volume propylene polymeric kettle
CN108212053A (en) * 2018-02-01 2018-06-29 辽宁华远石化科技有限公司 Substance law vinyl chloride polymeric kettle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100443158C (en) * 2007-04-13 2008-12-17 青岛伊科思新材料股份有限公司 Helix stirred reactor with cryogen gong through inside, application, and technical method of polyreaction
CN101596438B (en) * 2009-07-10 2011-11-30 浙江大学 Adjustable biaxial reaction kettle for stirring variable physical property medium
CN102854860A (en) * 2012-09-05 2013-01-02 江苏申久化纤有限公司 Scraper control method and device for polycondensation reaction kettle
CN106732266A (en) * 2016-12-16 2017-05-31 无锡力马化工机械有限公司 A kind of big volume propylene polymeric kettle
CN108212053A (en) * 2018-02-01 2018-06-29 辽宁华远石化科技有限公司 Substance law vinyl chloride polymeric kettle
CN108212053B (en) * 2018-02-01 2024-01-26 辽宁华远石化科技有限公司 Polymerization kettle for bulk method chloroethylene

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Legal Events

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: AVIC LIMING JINXI CHEMICAL MACHINERY (GROUP) CO.,

Free format text: FORMER NAME: JINXI CHEMICAL MACHINERY (GROUP) CO., LTD.

CP03 Change of name, title or address

Address after: 125001 No. 25 chemical machinery road, Lianshan District, Huludao

Patentee after: AVIC Liming Jinxi Chemical Machinery (Group) Co., Ltd.

Address before: 125001 No. 25 chemical Street, Lianshan District, Liaoning, Huludao

Patentee before: Jinxi Chemical Machinery (Group) Co., Ltd.

CX01 Expiry of patent term

Expiration termination date: 20150908

Granted publication date: 20061122

EXPY Termination of patent right or utility model