CN2839284Y - Large polyfurnace for producing polyvinyl-chloride paste resin by emulsion polymerization - Google Patents
Large polyfurnace for producing polyvinyl-chloride paste resin by emulsion polymerization Download PDFInfo
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- CN2839284Y CN2839284Y CN 200520092411 CN200520092411U CN2839284Y CN 2839284 Y CN2839284 Y CN 2839284Y CN 200520092411 CN200520092411 CN 200520092411 CN 200520092411 U CN200520092411 U CN 200520092411U CN 2839284 Y CN2839284 Y CN 2839284Y
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- kettle
- emulsion polymerization
- resin paste
- pvc resin
- bearing
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Abstract
A large polymerization furnace for producing polyvinyl-chloride paste resin by emulsion polymerization includes a kettle, a transmission apparatus, a stirrer, and a polymerization DCS control system. The transmission apparatus includes an electromotor, a speed reducer and a speed control apparatus with adjustable frequency with the stirrer positioned in the kettle. It is technically characterized in that the out wall of the straight canister segment of the kettle is equipped with a screw semi canal jacket. And the out wall of the bottom of the kettle is equipped with a screw guide jacket. The bottom of the kettle is equipped with a base bearing which isfixedly equipped with a water inlet by which water can be filled between a shaft sleeve and a shaft bushing. The advantages of the utility model are that the adoption of the circular canal type stirrer can not only enhance the heat transferring effect, but also improve stirring strength shear force and the times of cycle to make the particle of the product centralized and homogeneous. And the transmission apparatus of plug type and base bearing type is provided with smooth transmission and long running period. The adoption of speed control apparatus with adjustable frequency can realize the best rate of agitation adjustment in running process. In general, the large polymerization furnace for producing polyvinyl-chloride paste resin by emulsion polymerization is provided with good shape of the particles, homogeneous distribution of molecular weight, high smoke absorption rate and little black-yellow points and crystal points.
Description
(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 producing PVC resin paste by emulsion polymerization.
(2) background technology
In the pvc resin paste grade 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 pvc resin paste grade.At present, homemade pvc resin paste grade polymeric kettle has only several small-sized polymerization kettles such as 13.5 cubic meters, 7 cubic meters.These polymeric kettle unit volumes are little, the power consumption high, and counter investment height, production efficiency are low, have been superseded trend.Along with the polyvinyl chloride industrial expansion, polymeric kettle also towards most economical, production efficiency is high, construction and maintenance cost is low, good product quality, direction that output is big develop.
In vinylchlorid 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 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, remove have with polymerization technique outside the Pass, also relevant with the design of the structure of polymeric kettle and support equipment.
The polymeric kettle type of cooling had chuck cooling (comprising conventional jacket, spiral stream guidance chuck), the cooling of interior cold apron in the past.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.Though adopting the spiral stream guidance chuck to conduct heat makes moderate progress, processing preferably under the situation, can obtain bigger flow velocity (2～3m/s), thereby increase substantially heat-transfer effect, but because of being subjected to the restriction that machining is made, and water coolant is walked " short circuit " easily, makes heat transfer coefficient low, so its method of cooling also haves much room for improvement.
(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 producing PVC resin paste by emulsion polymerization.
The technical scheme that adopts is as follows:
The large-scale polymeric kettle of producing PVC resin paste by emulsion polymerization comprises kettle, transmission mechanism, agitator, polyreaction DCS Controlling System; The kettle volume is that 40～150 cubic meters, length-to-diameter ratio 2.5～3.5,8～30 meters of height, nominal diameter are 2～5 meters, is installed with the spiral half-pipe jacket on the kettle straight section outer wall, and autoclave body bottom is installed with the spiral stream guidance chuck; Quick opening manhole at kettle top design interlock; Be equiped with agitator in still, stir shaft is an open core type, is installed with the annular tube type stirring rake on the stir shaft.The inner recirculated cooling water that feeds of agitator, cooling water intakeoutfall is arranged in the middle of the transmission two bearings fulcrum, and water coolant adopts poly-tetrafluoro packing seal; The whole drive system connecting mode is as follows: adopt the direct connection form between electric motor and step-down gear, electric motor is connected to RHVC, realizes the equipment operation speed governing; Adopt chain coupling between step-down gear and transmission shaft, transmission shaft and stir shaft are after bolted, by mechanical seal locating bearing, upper bearing box centre bearer and the supported at three point of equipment kettle base bearing of mechanical seal; Step-down gear, electric motor, upper bearing box directly are fixed by bolts on the transmission mechanism frame, and mechanical seal directly is fixed on the still top, and mechanical seal inside provides the circulation machinery oil to realize sealing and cooling by the oil station; Autoclave body bottom is equipped with base bearing, and base bearing is installed with can be from feeding the water-in of high-pressure process water between axle sleeve and bearing shell, and the purpose of injecting high-pressure process water is to prevent that material from entering the equipment that influences in the bearing and running well; This base bearing has the adjusting eccentric structure, and can play the effect of supporting stir shaft; Above-mentioned polyreaction Controlling System adopts the DCS Controlling System.
The utility model polymeric kettle length-to-diameter ratio is suitable, unit output is big (can reach 400 tons of/cubic metre years), the utility model adopts the agitator of band tubular type stirring rake, its purpose is to improve the equipment heat-transfer effect, improve stirring intensity shearing force and cycle index simultaneously, make product pellet concentrated and even; The utility model polymeric kettle adopts upper plug type to add base bearing formula transmission mechanism, stable drive, and running period is long, and utilizes agitator to conduct heat, and its works very well, RHVC can realize that best mixing speed is regulated in the operation process.The polyvinyl chloride that adopts the utility model polymeric kettle to produce, particle form is good, even molecular weight distribution, oil absorbency height, black yellow point and brilliant point are few.The utility model polymeric kettle is succeeded in developing, and for China's PVC industry production has increased a new reator kind, will promote the development of China's polyvinyl chloride industry.
(4) description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the present utility model.
Fig. 2 is the utility model transmission structures synoptic diagram.
Fig. 3 is the utility model base bearing sectional view.
(5) embodiment
Embodiment one:
The large-scale polymeric kettle of producing PVC resin paste by emulsion polymerization comprises kettle 1, transmission mechanism 2, agitator, polyreaction DCS Controlling System; Kettle 1 nominal volume is 48 cubic meters, length-to-diameter ratio 2.8,15 meters of height, 2.68 meters of nominal diameters; Be installed with spiral half-pipe jacket 10 on the kettle 1 straight section outer wall; Be installed with spiral stream guidance chuck 13 in kettle 1 bottom; The less flow of spiral half-pipe jacket 10 usefulness can obtain bigger water coolant flow velocity 3.5m/S, the raising coefficient of heat transfer that its many imports and multiple exit mode can be bigger, and heat transfer coefficient can reach 950kcal/m
2℃ hr adopts spiral half-pipe jacket 10 both to increase the rigidity of kettle 1, has avoided taking place in the process of cooling " short circuit " phenomenon simultaneously effectively; Be provided with chain quick opening manhole 9 at kettle 1 top; Kettle 1 inside is provided with agitator, stir shaft 12 adopts hollow structure, be installed with annular tube type stirring arm 11 on the stir shaft 12, in the middle of transmission two bearings fulcrum, be installed with entrance of cooling water 22 and cooling water outlet 23, it is sealed into packing seal 7, is convenient to the water coolant circulation so as to remedying chuck heat exchange deficiency; The entire equipment length-to-diameter ratio is bigger, makes entire equipment become elongated like this, therefore more helps device interior and stirs heat exchange, thereby alleviate and improve sticking wall effect, reduces power of agitator greatly simultaneously, and the agitator system coefficient of heat transfer can reach 900～1000kcal/m
2℃ hr, its heat transfer area is a chuck heat transfer area 15%, conducts 20% of whole polymerization reaction heat, illustrates that thus its heat transfer efficiency is more much higher than chuck; Owing to effectively reduce internals, make the kettle interior shape simple simultaneously, therefore more help maintenance and clean; Because the less stirrer diameter of device diameters is bigger, 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, and concentration is less than 60%, the chloroethylene polymerization of viscosity below 120 centipoises.
Be provided with base bearing 14 in kettle 1 bottom to support stir shaft 12, base bearing 14 has the adjustable eccentric structure, and 19 on the axle sleeve 18 of base bearing 14 and bearing shell have water filling port 21 toward kettle 1 inner water filling continuously; The adjustable eccentric structure of base bearing 14, stir shaft lower end off-centre in the time of can effectively avoiding always assembling.During general chloroethylene polymerization, produce heat of friction between axle sleeve and bearing shell when running well, thereby material easily enters bearing and because local superheating produces the plasticizing sheet, with the stir shaft locking, so both being difficult to clean influences equipment simultaneously and runs well.The utility model is equiped with water-in at autoclave body bottom, is furnished with the continuous water filling of waterflood pump, makes water enter kettle inside between axle sleeve and bearing shell, and material is sealed, and has overcome the seize problem, plays local cooling effect simultaneously.
The utility model transmission mechanism 2 adopts upper plug type to add base bearing 14 structure formations, comprises electric motor 3, RHVC 20, step-down gear 4, shaft coupling 5, upper bearing box 6, water coolant packing seal 7, mechanical seal 8, transmission shaft 16, base bearing 14; RHVC 20 is wired on the electric motor 3, and electric motor 3 and step-down gear 4 direct connections, 16 of step-down gear 4 and transmission shafts are connected by chain coupling 5; Stir shaft 12 and transmission shaft 16 mechanical seal locating bearing 15 three-point fixs by base bearing 14, head bearing box 6 bearings, mechanical seal 8 after bolted, head bearing box 6, step-down gear 4 are supported by frame 17, mechanical seal 8 directly through bolted at kettle 1 top, make normally smooth operation of entire equipment.
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.
Embodiment two:
Embodiment two and embodiment one are basic identical, and difference is: kettle 1 volume is 130 cubic metres; Length-to-diameter ratio 2.6; 30 meters of height; 4.0 meters of nominal diameters.
Claims (6)
1, the large-scale polymeric kettle of producing PVC resin paste by emulsion polymerization comprises kettle (1), transmission mechanism (2), agitator, polyreaction DCS Controlling System, and transmission mechanism comprises electric motor (3), step-down gear (4), RHVC (20); Agitator is installed in the kettle (1), it is characterized in that: be installed with spiral half-pipe jacket (10) on kettle (1) the straight section outer wall, kettle (1) bottom outer wall is installed with spiral stream guidance chuck (13); Kettle (1) bottom is equiped with base bearing (14), and base bearing (14) is installed with can be from the water-in (21) of water filling between axle sleeve (18) and the bearing shell (19).
2, the large-scale polymeric kettle of producing PVC resin paste by emulsion polymerization according to claim 1 is characterized in that described kettle (1) volume is 40～150m
3, length-to-diameter ratio is 2.5～3.5, height 8～30m, and nominal diameter is 2～5m.
3, the large-scale polymeric kettle of producing PVC resin paste by emulsion polymerization according to claim 2 is characterized in that described kettle (1) volume is 48m
3, length-to-diameter ratio is 2.8, height 15m, and nominal diameter is 2.68m.
4, the large-scale polymeric kettle of producing PVC resin paste by emulsion polymerization according to claim 2 is characterized in that described kettle (1) volume is 130m
3, the length ratio is 2.6, height 30m, and nominal diameter is 4.0m.
5, the large-scale polymeric kettle of producing PVC resin paste by emulsion polymerization according to claim 1, the stir shaft (12) that it is characterized in that described agitator is open core type, stir shaft (12) is installed with the annular tube type stirring rake (11) that can lead to water coolant, be installed with agitator entrance of cooling water (22) and cooling water outlet (23) in the middle of transmission two bearings fulcrum, it is sealed into packing seal (7).
6, the large-scale polymeric kettle of producing PVC resin paste by emulsion polymerization according to claim 1, the electric motor (3) that it is characterized in that described transmission mechanism (2) is an associated mode with step-down gear (4), electric motor (3) is equiped with RHVC (20), step-down gear (4) is connected through chain coupling (5) with transmission shaft (16), transmission shaft (16) and stir shaft (12) are through bolting, and the mechanical seal locating bearing (15) of mechanical seal (8), upper bearing box (6) bearing, kettle (1) base bearing (14) are its three point of suppon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520092411 CN2839284Y (en) | 2005-09-08 | 2005-09-08 | Large polyfurnace for producing polyvinyl-chloride paste resin by emulsion polymerization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520092411 CN2839284Y (en) | 2005-09-08 | 2005-09-08 | Large polyfurnace for producing polyvinyl-chloride paste resin by emulsion polymerization |
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| Publication Number | Publication Date |
|---|---|
| CN2839284Y true CN2839284Y (en) | 2006-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520092411 Expired - Lifetime CN2839284Y (en) | 2005-09-08 | 2005-09-08 | Large polyfurnace for producing polyvinyl-chloride paste resin by emulsion polymerization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585648A (en) * | 2016-02-03 | 2016-05-18 | 徐光斌 | Polyvinyl chloride for battery separators, and production device and method thereof |
-
2005
- 2005-09-08 CN CN 200520092411 patent/CN2839284Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585648A (en) * | 2016-02-03 | 2016-05-18 | 徐光斌 | Polyvinyl chloride for battery separators, and production device and method thereof |
| CN105585648B (en) * | 2016-02-03 | 2018-06-22 | 宜昌百川环境检测有限公司 | A kind of battery separator polyvinyl chloride and its process units and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |