CN108247882A - Substance law vinyl chloride agitating device - Google Patents

Substance law vinyl chloride agitating device Download PDF

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Publication number
CN108247882A
CN108247882A CN201810100695.9A CN201810100695A CN108247882A CN 108247882 A CN108247882 A CN 108247882A CN 201810100695 A CN201810100695 A CN 201810100695A CN 108247882 A CN108247882 A CN 108247882A
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CN
China
Prior art keywords
channel
cooling water
blender
agitating shaft
vinyl chloride
Prior art date
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Granted
Application number
CN201810100695.9A
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Chinese (zh)
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CN108247882B (en
Inventor
杨春辉
张涛
杨曦今
赵振刚
穆玮
陆晓峰
于群
陈诗瑶
赵国程
罗忠新
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Liaoning Huayuan Petrochemical Technology Co Ltd
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Liaoning Huayuan Petrochemical Technology Co Ltd
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Priority to CN201810100695.9A priority Critical patent/CN108247882B/en
Publication of CN108247882A publication Critical patent/CN108247882A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/02Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/12Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
    • B29B7/14Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with screw or helix
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/02Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22Component parts, details or accessories; Auxiliary operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/80Component parts, details or accessories; Auxiliary operations
    • B29B7/82Heating or cooling
    • B29B7/826Apparatus therefor
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F114/00Homopolymers 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
    • C08F114/02Monomers containing chlorine
    • C08F114/04Monomers containing two carbon atoms
    • C08F114/06Vinyl chloride
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/01Processes of polymerisation characterised by special features of the polymerisation apparatus used
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/02Polymerisation in bulk

Abstract

A kind of substance law vinyl chloride agitating device, including driving motor, agitating shaft, blender, agitating shaft and blender are hollow structure, are characterized in that:Stirrer bottom is closed, cooling water inlet and cooling water outlet are equipped at the top of agitating shaft, the channel I being connected with cooling water outlet positioned at middle part is equipped in agitating shaft, channel I peripheries are equipped with the channel II being connected with cooling water inlet, and cooling water circulation is formed between cooling water inlet, channel II, channel I and cooling water outlet.It has the advantages that simple and compact for structure, good cooling results, operational process are reliable and stable, maintenance cost is low etc..

Description

Substance law vinyl chloride agitating device
Technical field
The present invention relates to chemical industry mixing equipment, specifically a kind of substance law vinyl chloride agitating device is mainly fitted It should be in the preparation of polyvinyl chloride substance law.
Background technology
There are mainly three types of the production methods of existing polyvinyl chloride resin, i.e. suspension method, emulsion method and substance law.Wherein, substance law gathers Vinyl chloride (M-PVC) technique is the patented technology of French atropic company, is succeeded in developing in 1956.It is and " holy in Lyons of France Fang Si " has built up the first in the world set industrial production device, is referred to as at that time " one-step method ".There are 18 12m3Horizontal rotary gather Kettle is closed, polymeric kettle itself rotation, kettle is interior equipped with the stirring of fried dough twist type and stainless steel ball, plays stirring action, prevents powder agglomates and gather It closes object and glues wall.
The said firm has succeeded in developing " two step method " again in nineteen sixty, i.e., polymerisation is carried out in two steps.The first step is pre-polymerization Close, carried out in prepolymerization reactor, add in 1/3~1/2 and corresponding initiator of monomer total amount, polymerisation conversion control 8%~ 12%.Second step is polymerization, is carried out in polymeric kettle, after prepolymerized material is transferred to, then remaining vinyl chloride monomer is added Enter, and supply initiator, when polymerisation conversion reaches 70%~80%, polymerisation terminates.But there are still have material for the technique It puts endless, the shortcomings of clear kettle is difficult, and finished product " flake " is more, and remaining vinyl chloride monomer content is high.Until the said firm in 1978 again It is secondary succeeded in developing " two-part polymeric kettle " after, i.e., using vertical autoclave, just successfully solve heat transfer, stirring, recycling, from Control, a series of problems, such as resin quality is poor, make the production of M-PVC reach the stage of maturation.
In mass polymerization kettle, with the production-scale continuous expansions of PVC, large-scale polymeric kettle has been widely used.Usually By volume 30m3Following kettle becomes small pot, by 70 m of volume3Above kettle becomes large-scale kettle.Large-scale kettle can not only improve production Quality and homogeneity, and floor space is small, and capital expenditure is also corresponding relatively low.
By largely analyzing and testing it is found that the heat-transfer capability of autoclave body is the key that restrict one of its production capacity, about 60% Heat exchanged by reflux condenser, about 30% heat is exchanged by reaction kettle wall, and about 10% heat passes through cooling and stirring Systems exchange.Since polyvinyl chloride synthesis belongs to strong exothermal reaction, and existing reaction kettle cooling effect is limited, if cannot keep The stabilization of temperature can then cause the generation of a large amount of side reaction products.
Existing mass polymerization kettle, it is " a kind of as disclosed in the utility model patent that Authorization Notice No. is CN2839283Y The large-scale polymeric kettle of vinyl chloride mass polymerization ", the technical solution include autoclave body, transmission device, blender, polymerisation DCS Control system, its main feature is that:Transmission device includes being located at the upper transmission device at the top of autoclave body and the underdrive device of bottom, stirs Device includes being located at the upper blender of autoclave body internal upper part and the lower blender of bottom, and autoclave body straight section outer wall is installed with quick opening manhole, spiral shell Half-pipe jacket is revolved, spiral stream guidance chuck is installed on autoclave body bottom outer wall.There are following defects for the technical solution:Although filler is close Seal structure is simpler, it is more convenient to safeguard, but due to the raising of system temperature in polymerization process, airtight and watertight padding is caused to fall into reactant System, and then affect the quality of final products.Although the technical solution is referred to using hollow-core construction inside blender, convenient for cold But flow is led to so as to making up the defects of jacket for heat exchange is insufficient, but since the part needs ensureing agitating shaft spin stabilization premise Under to ensure leakproofness and cooling effect, those skilled in the art can not be on the basis of the technical solution with reference to the normal of this field It advises technological means and associates its concrete structure easily, because above structure is not the common knowledge of this field.
" a kind of polyvinyl chloride enlargement resin as disclosed in the utility model patent that Authorization Notice No. is CN205387556U Polymeric kettle ", the technical solution include polymeric kettle ontology, agitating shaft, blender, axle envelope and transmission device, and the agitating shaft is interior Outer double layer hollow structure, formed cooling water into the autonomous channel that goes out, the blender is hollow structure and internal setting water conservancy diversion Channel, cooling water is set between the blender and agitating shaft, and into and out of channel, described this volume surrounding of polymeric kettle is additionally provided with cooling Water leg.Although the technical solution can by cooling water polymeric kettle it is inside and outside be carried out at the same time circulate take away polymerization process produce Raw heat can effectively realize the uniform cooling of material in polymeric kettle.But those skilled in the art only illustrate secretary by this The content of load has no way of learning cooling water how in lower spindle nose(304)From sleeve in the case of lasting rotation(307)Into outer stirring Central siphon cooling water inlet(3011), how cooling water is in lower spindle nose(304)From central shaft tube in the case of lasting rotation(302)Stream Central siphon cooling water outlet is stirred out(3012), because above structure is not the common knowledge of this field.
Invention content
The object of the present invention is to provide a kind of substance law vinyl chloride agitating devices, fundamentally solve the above problem, It has the advantages that simple and compact for structure, good cooling results, operational process are reliable and stable, maintenance cost is low etc..
To achieve the above object, the present invention provides following technical solutions:The substance law vinyl chloride is included with agitating device Driving motor, agitating shaft, blender, agitating shaft and blender are hollow structure, are characterized in that:Stirrer bottom is closed, Cooling water inlet and cooling water outlet are equipped at the top of agitating shaft, being connected with cooling water outlet positioned at middle part is equipped in agitating shaft Channel I, channel I peripheries are equipped with the channel II that is connected with cooling water inlet, cooling water inlet, channel II, channel I and cold But cooling water circulation is formed between water out.
Channel I and channel II are connected respectively with the hollow structure of blender.
Inverted cone-shaped structure is equipped in agitating shaft.
Blender is spiral agitator, is equipped with helical duct in helical blade, the top and bottom of helical duct are set respectively There is a flow-guiding mouth, the flow-guiding mouth at the top of helical duct is connected with channel II, and the flow-guiding mouth of helical duct bottom is connected with channel I It is logical.
Helical blade is made of the arc panel being fixed on agitating shaft outer wall of a pair of opposing, is equipped between arc panel Middle partition board and support column.
Beneficial effects of the present invention:Packing seal is adapted as mechanical seal, it is unfavorable not only to overcome original mechanical seal In the Maintenance and Repair the defects of, mechanical seal can be directly replaced in the case where not tearing motor for speed reducer open;And overcome filler The problem of sealing causes product quality homogeneity poor.Facilitate installation maintenance, reduce the repair time of equipment, and then improve life Produce efficiency.
It is polished by electrolytic polishing, autoclave body inside surface roughness, blender I, blender II is made to be contacted with reaction medium Outer surface roughness Ra≤0.08 μm so as to effectively reduce clear kettle number, shortens the production cycle, improves production efficiency.
Blender I(Spiral agitator)At the top of from polymeric kettle until bottom, while progress is stirred, pushes and ties up Hold the shuttling movement up and down of powder.In addition, it is equipped with blender II in reactor bottom(Anchor scraper blender), stirrer bottom It is matched with reaction kettle bottom surface curve.On the one hand blender II can prevent particle from forming precipitation in liquid phase reactor, on the other hand It can be in powder phase reaction to blender I feedings.Two blenders are low-speed running, are realized by the way that variable-frequency governor is configured Speed of agitator needed for production.The screw rod blade of blender I is using double cambered surfaces(Concave structure), coordinate outer surface Ra<0.08 μm, have Effect reduces raw material and sticks on blender I.
Although screw agitator and hanging plate/scraping cutter type stirrer are belonged to the routine of this field for the blender of polymeric kettle The choice of technology, but how to ensure the leakproofness between agitating shaft and blender under the premise of ensureing that blender stablizes rotation, The cooling effect for ensureing blender simultaneously is not that those skilled in the art can associate easily.
Autoclave body thickness 26+3mm, Q345R are by 16Mng, 19Mng and GB6654-1996 in GB713-1997 16MnR merges, and due to wherein containing a certain amount of alloying element, has higher yield strength.Thickness as defined in GB150 Ranging from 3mm ~ 200mm, phosphorus content is not high, and weldability is preferable, as thickness≤34mm, has good machinability, i.e., Process is made not generate hot and cold crackle without preheating.But it can equally be generated when thickness is big, environment temperature is low Hot and cold crackle is preheated to eliminate its internal stress before processing.
Under the premise of ensureing that autoclave body is rigid, using the composite board of above-mentioned thickness, compared to using the single materials of Q345R Manufactured autoclave body not only remains the low performance of Q345 thermal resistance values, and as a result of composite so that total quality is more Gently, manufacture cost is lower.Due to the thickness smaller of each monomer, maximum has played each monomer plank monomer workability.Meanwhile Q345R and S31603 has better compatibility and conductivity of heat.Therefore, manufacturing process is greatlied simplify.Conducive to autoclave body volume to Enlargement development, it is less by or avoid fabrication process condition and restricted, extend the service life of polymeric kettle.
After the volume of autoclave body is amplified according to the parameter of geometric scale-up and blender according to dynamic similarity, volume be by According to m3Grade amplification, heat exchange area is according to m2Amplification so needing to consider the hot theory of similarity of chemical engineering process, passes through Increase the insufficient section that jacket for heat exchange area supplements heat exchange area after amplification, country those skilled in the art consummate can not answer at present Equipment is researched and developed with above-mentioned comprehensive theory.Compared to volume 50m3Polymeric kettle, one-pot production capacity of the present invention is up to 30,000 tons/year, volume 40% is improved, production capacity improves 50%.
Half-pipe jacket is coiled on autoclave body outer wall, and using segmental influent, water flowing out structure.That is, each chuck is cooled down single It is first in parallel, it not only effectively reduces entire chuck and occurs the probability of " short circuit phenomenon " simultaneously, and reduce cooling water in chuck In flow resistance, so as to improve the heat-transfer capability of chuck.In addition, external condenser is provided in autoclave body, preferably to complete Heat heat exchange.(Condenser belongs to ordinary skill in the art selection, no longer elaborates its structure herein).
Description of the drawings
Fig. 1 is the schematic cross-sectional view of the present invention;
Fig. 2 is the partial enlargement structural representation of part A in Fig. 1;
Fig. 3 is the partial enlargement structural representation of part B in Fig. 1;
Fig. 4 is the partial enlargement structural representation of C portion in Fig. 1;
Fig. 5 is the structure diagram of blender I of the present invention;
Fig. 6 is schematic cross-sectional views of the Fig. 5 along line D-D;
Fig. 7 is schematic cross-sectional views of the Fig. 6 along F-F lines;
Fig. 8 is schematic cross-sectional views of the Fig. 5 along E-E lines;
Fig. 9 is schematic cross-sectional views of the Fig. 8 along G-G lines;
Figure 10 is schematic cross-sectional views of the Fig. 8 along H-H lines;
Figure 11 is schematic cross-sectional views of the Figure 10 along K-K lines;
Figure 12 is schematic cross-sectional views of the Fig. 8 along I-I lines;
Figure 13 is Fig. 8 from J to the structure diagram being unfolded along outer tube outer wall.
Reference sign:1 driving motor I, 2 cooling water outlet I, 3 cooling water inlet I, 4 condensers, 5 hydraulic cylinder I, 6 Agitating shaft I, 7 blender I, 8 half-pipe jackets, 9 agitating shaft II, 10 mechanical seals, 11 hydraulic cylinder II, 12 rack II, 13 shaft couplings, 14 speed reducer II, 15 cooling water inlet II, 16 cooling water outlet II, 17 driving motor II, 18 blender II, 19 quick opening manholes, 20 autoclave bodies, 21 filters, 22 rack I, 23 speed reducer I, 24 variable-frequency governors, 25 channel I, 26 channel II, 27 agitating shaft I are empty Chamber, 28 bottom plates, 29 mounting bases, 30 base bearing I, 31 end caps, 32 hollow shaft I, 33 hollow shaft II, 34 base bearing II, 35 speed reducers Input shaft, 36 rack I base bearings, 37 channel III, 38 channel IV, 39 channel III imports, 40 channel IV outlets, 41 closure plate I, 42 Partition board, 50 top plates, 51 supports in upper sealing plate, 44 partition boards, 45 closure plate II, 46 times sealing plates, 47 outer arc plate II, 48 inner arc plate II, 49 Column, 52 inner arc plate I, 53 outer arc plate I, 54 rack II base bearings, 55 hollow shaft IV, 56 helical ducts, 57 deflectors, 58 hollow shafts III。
Specific embodiment
Below in conjunction with Fig. 1 ~ 13, pass through the specific embodiment content that the present invention will be described in detail.Using the sheet of the agitating device Body method vinyl chloride polymeric kettle includes the autoclave body 20 for being equipped with blender I 7 and blender II 18.It is installed respectively on autoclave body cold Condenser 4 and filter 21, and quick opening manhole 19 is installed in autoclave body side, features described above is existing in the prior art more in detail Description, and herein role it is same as the prior art, be not described in detail its structure.To increase whole system Heat exchange efficiency, by blender I 7 and its agitating shaft I 6 or blender II 18 and its agitating shaft II 9 using hollow structure, 7 bottom locks of blender I, 18 top seals of blender II(Position restriction relationship in text, such as top, bottom, be only for Description is convenient, and using the coordinate system of Fig. 1 as reference, and refer not to the position of each component in actual installation).6 tops of agitating shaft I Equipped with cooling water inlet I and cooling water outlet I, agitating shaft II bottoms are equipped with cooling water inlet II and cooling water outlet II 16.It stirs The channel I 25 being connected with cooling water outlet I being equipped in axis I 6 positioned at middle part is mixed, 25 peripheries of channel I are equipped with and cooling water The channel II 26 that import I 2 is connected, between cooling water inlet I 2, channel II 26, channel I 25 and cooling water outlet I Form cooling water circulation.
In addition, the heat transfer effect to improve autoclave body outer wall, half-pipe jacket is set on autoclave body outer wall, to ensure autoclave body chuck 8, and each pipeline is in parallel, form several half-pipe jacket heat exchange units.On the one hand it can reduce the flow resistance of cooling water in chuck, On the other hand all pipelines can be avoided to occur the situation of " short circuit " simultaneously.
At the top of autoclave body, 1 output shafts of driving motor I pass through shaft coupling(Attached drawing is unmarked)It is firm with speed reducer input shaft 35 Property connection(For convenience of the rotating speed of control driving motor I or driving motor II, and variable-frequency governor 24 is set), speed reducer input shaft 35 by after a series of gear shaft and gear speed governing, most the torque of driving motor I 1 passes to hollow shaft I 32 at last.It is hollow Axis I 32 is the output shaft of speed reducer I 23, and hollow shaft I 32 is by being located at bearing block(It is unmarked in figure)Interior base bearing I 30 It is limited in speed reducer I 23 with base bearing II 34, and passes through end cap 31 and seal.32 bottoms of hollow shaft I by shaft coupling 13 with Agitating shaft I 6 is connected, and hollow shaft II 33 is bolted on the top of hollow shaft I 32, in hollow shaft II 33 and cooling water Circumferentially arranged with several deflector holes in 3 corresponding height of import I(It is unmarked in figure)Even if so as to ensure in hollow shaft II In the case of 33 lasting rotations, cooling water inlet I 3 is kept to remain stationary as, and cooling water is passed into channel II 26.
The structure of autoclave body bottom is similar to autoclave body top structure, and 17 output shafts of driving motor II are defeated with speed reducer II's 14 Enter axis(It is unmarked in figure)Rigid connection, the input shaft of speed reducer II by after a series of gear shaft and gear speed governing most at last The torque of driving motor II 17 passes to hollow shaft III 58.Hollow shaft III 58 is the output shaft of speed reducer II 17, hollow Axis III 58 is by being located at bearing block(It is unmarked in figure)Interior base bearing(It is unmarked in figure)Limiting is led in speed reducer II Cross end cap(It is unmarked in figure)Sealing.Hollow shaft IV 55 is bolted on the bottom of hollow shaft III 58, hollow shaft III 58 tops are connected by shaft coupling 13 with agitating shaft II 9, and hollow shaft IV 55 is set in 15 corresponding height of cooling water inlet II There are several deflector holes(It is unmarked in figure)Even if so as to ensure in the case of hollow shaft IV 55 persistently rotation, to keep cooling Water inlet II 15 is remained stationary as, and cooling water is passed into channel IV 38.
Blender I 7 is spiral agitator, and helical duct 56, the top and bottom of helical duct 56 are equipped in helical blade Flow-guiding mouth 43 is respectively equipped with, the flow-guiding mouth at 56 top of helical duct is connected with channel II, the flow-guiding mouth 43 of helical duct bottom It is connected with channel I 25.
Agitating shaft flow-guiding mouth at the top and bottom of autoclave body(It is unmarked in figure)On be respectively equipped with mounting base 29, set in mounting base There is bottom plate 28, rack I 22 for limiting agitating shaft I 6 is respectively fixed on bottom plate 28 and for limiting agitating shaft II's The side setting hydraulic cylinder II 11 of the side setting hydraulic cylinder I 5 of rack II 12, rack I, rack II, the setting side of hydraulic cylinder Formula is same as the prior art, is not described in detail.Between agitating shaft I 6 and the bottom plate 28 of rack I 22 or agitating shaft II 9 with Mechanical seal 10 is equipped between the bottom plate of rack II 12.
The channel I 25 of agitating shaft I 6 is variable-diameter structure, by being set between shaft coupling installation site and helical blade Inverted cone-shaped structure(As shown in Fig. 2 bottoms, attached drawing is unmarked), inverted cone-shaped structure top is channel I, and inverted cone-shaped structure lower part is stirs Mix axis I cavitys 27.
The installation limiting of agitating shaft I, specially:The top of agitating shaft I drive outputs is rigidly attached to by shaft coupling On hollow shaft I 32, middle part is limited by the bearing block equipped with rack I base bearings 36 in rack I, and in bearing block and stirring Sealing ring is set between axis, and lower part is limited by mechanical seal 10 on bottom plate 28.Preferably, inverted cone-shaped structure is arranged on and stirred Mix the part of axis I.The installation limiting of agitating shaft II is similar to agitating shaft I, and middle part is by with organic frame II base bearings 54 Bearing block limits.
To increase heat exchange area, in blender I(Screw agitator)Helical blade in setting cooling-water duct.Helical-blade Piece is made of upper and lower two pieces of arc panels, the gap ecto-entad between arc panel set gradually the top plate 50 of plug, support column 51, Middle partition board 49, arc panel outside, which gradually collapses and passes through top plate 50, to be blocked, and is directly welded on agitating shaft outer wall on the inside of arc panel. Wherein, top plate 50, support column 51,49 height of middle partition board gradually increase, so as to which two pieces of arc panels be shaped, and as arc panel Support construction.It is provided with so as to form spiral helicine cooling-water duct between middle partition board 49, arc panel and agitating shaft outer wall The structural support of power.
Further, arc panel uses double-layer structure(As shown in Figure 9), outer arc plate I 53 and 47 left ends of outer arc plate II are straight It connecing and is welded on agitating shaft I outer walls, right end is shut by top plate 50, and partition board 44 is set between middle partition board and agitating shaft I outer walls, Partition board sets inner arc plate I 52 and inner arc plate II 48 in both sides respectively about 44, and helical blade upper end is closed by upper sealing plate 42, It is closed by lower sealing plate 46 helical blade lower end.
Cooling water is rotated down flowing in the channel II of gravity and the collective effect lower edge annular for forming eddy flow, and edge is arranged on Flow-guiding mouth at the top of helical blade enters spiraled cavity, and continues under collective effect of the gravity with forming eddy flow along helical duct It flows downward, when reaching stirrer bottom, is entered in 6 cavitys of agitating shaft I from the flow-guiding mouth of helical blade bottom, then Continue to flow out cooling water outlet I under the action of gravity is overcome with minimum resistance along channel I.Channel II is is arranged on channel I External loop configuration, cooling water can form stable eddy flow in channel II, and eddy flow is transferred to helical duct 56, spiral Channel roof is closed by closure plate I 41, and by current deflecting to top flow-guiding mouth, helical duct bottom passes through 45 envelopes of closure plate II It closes, by current deflecting to lower part flow-guiding mouth, the stroke of cooling water can be increased by eddy flow, accelerate the flowing velocity of cooling water.
Blender II 18 is scraper blender, for convenience of the assembling of blender II 18, its middle part is arranged to and is stirred The tubular structure is fixed at the top of agitating shaft II by the matched tubular structures of axis II, blender II 18 by bolt, Jin Erke The movement of blender II 18 is driven by agitating shaft II.Channel III imports 39 are equipped between agitating shaft II and blender II 18 With channel IV outlets 40.Further, the stroke for raising cooling water makes blender II 18 by cooling water inlet to outlet Temperature gradient keeps stablizing, the deflector in blender II 18 between channel III imports 39 and channel IV outlets 40(Such as Shown in Fig. 3).
Be equipped in agitating shaft II positioned at middle part and 16 phases of cooling water outlet II together with channel III 37, channel III 37 peripheries are equipped with the channel IV, channel III 37 and channel IV that are connected with cooling water inlet II respectively with blender II's 18 Hollow structure is connected, and is formed between cooling water inlet II 15, channel III 37, channel IV and cooling water outlet II 16 cold But water recycles.
To increase heat transfer efficiency, similar cooling-water duct is equipped in blender II.Specifically, by cooling water into Mouth II is vertically arranged with agitating shaft, and cooling water is made to enter along the tangential direction of circular passage IV.Rotation is formed in the IV of circular passage Stream under the action of eddy flow, finally enters blender in circular passage IV ends along the channel IV outlets perpendicular to agitating shaft II In the cavity of II, cooling flow enters along the water stream channel that the guide plate in cavity is formed from channel III imports positioned at the logical of middle part Road III is finally discharged under the effect of gravity with minimum resistance from cooling water outlet II.
Although also disclose that sets cooling water that pipeline is connected in the prior art in blender, tool therein is not disclosed Body structure.Therefore, it even if those skilled in the art obtain above-mentioned technological document, also has no way of knowing how to carry out existing blender It improves to obtain stable, leakproofness well while there is the blender of cooling effect.
Before use, it needs in each cooling-water duct(Predominantly helical duct)It is passed through higher than actual production water pressure of cooling water The high pressure water flow of certain numerical value to test the leakproofness of helical duct and resistance to pressure, avoids going wrong in actual production.
Under the premise of heat-transfer effect is ensured, using the excellent composite plate of processing effect, such as Q345R+S31603 meets NB/T47002.1~4-2009《Pressure vessel Explosive Welding Composite Plates》Standard.The ratio of height to diameter of autoclave body is preferably 1.22:1, envelope Head is that ratio of long axis to short axis is 2:1 standard oval, autoclave body total measurement (volume) are 70m3.To coordinate 70m3Autoclave body volume, blender I Helical blade diameter preferably 1600 ~ 1950mm, screw pitch preferably 1700 ~ 2125mm.LPJ-280 can be used in speed reducer I, preferably exists LPJ-280 can be used in 18 ~ 26rpm frequency controls, speed reducer II, preferably in 10 ~ 15rpm frequency controls.

Claims (5)

1. a kind of substance law vinyl chloride agitating device, including driving motor, agitating shaft, blender, agitating shaft and blender are Hollow structure, it is characterised in that:Stirrer bottom is closed, and cooling water inlet and cooling water outlet, stirring are equipped at the top of agitating shaft The channel I being connected with cooling water outlet positioned at middle part is equipped in axis, channel I peripheries are equipped with what is be connected with cooling water inlet Channel II forms cooling water circulation between cooling water inlet, channel II, channel I and cooling water outlet.
2. substance law vinyl chloride agitating device according to claim 1, it is characterised in that:Channel I and channel II difference It is connected with the hollow structure of blender.
3. substance law vinyl chloride agitating device according to claim 2, it is characterised in that:Back taper is equipped in agitating shaft Structure.
4. the substance law vinyl chloride agitating device according to claims 1 or 2 or 3, it is characterised in that:Blender is spiral Blender, helical blade is interior to be equipped with helical duct, and flow-guiding mouth, helical duct top are respectively equipped at the top and bottom of helical duct Flow-guiding mouth be connected with channel II, the flow-guiding mouth of helical duct bottom is connected with channel I.
5. substance law vinyl chloride agitating device according to claim 2, it is characterised in that:Helical blade is by a pair of opposite The arc panel being fixed on agitating shaft outer wall of setting is formed, and middle partition board and support column are equipped between arc panel.
CN201810100695.9A 2018-02-01 2018-02-01 Stirring device for chloroethylene by bulk method Active CN108247882B (en)

Priority Applications (1)

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