CN104558309B - A kind of polymerization reaction kettle component and its application method - Google Patents
A kind of polymerization reaction kettle component and its application method Download PDFInfo
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Abstract
The invention discloses a kind of polymerization reaction kettle component and its application method, for using or comprising acrylamide as the reaction of raw material, it to include kettle（1）, air-blowing mouthful and air-blowing pipeline（6）, the air-blowing mouth and air-blowing pipeline（6）Connect source of the gas 10, the kettle（1）Bottom sets discharging opening and connects prilling granulator, the kettle（1）Upper setting lubricating fluid charge mouthful（2‑1、2‑2、2‑3、2‑4）, each lubricating fluid charge mouthful（2‑1、2‑2、2‑3、2‑4）Upper connection lubricating fluid adds pipeline（5）To convey lubricating fluid.The polymerization reaction kettle component and its application method of the present invention introduces lubricating fluid and reduces the resistance that polymerisation completion post-consumer polymer is forced out polymerization reaction kettle, gas pressure required for reducing in reactor kettle, equipment volume can suitably be increased, improve efficiency, energy consumption is reduced, and effectively reduces the occurrence probability that pressure wears phenomenon.
Description
Technical field
The present invention relates to a kind of polymerization reaction kettle component and its application method of chemical field, in particular for or contain
Acrylamide is the reactor component and its control technique that polymerizable raw material generates gluey high molecular polymer.
Background technology
Polyacrylamide polymer is one of water-soluble polymer that a class is largely produced.It is applied to oil, Shui Chu
The fields such as reason, papermaking, textile printing and dyeing, agricultural.
In the preparation of polyacrylamide product, there are a class polyacrylamide polymerization product or copolymer in polymerization reaction kettle
The middle gluey high molecular polymer of formation monoblock, water content is usually 65~80%, with stronger viscoplasticity.
A kind of polymer treatment technique is to be expressed into the gluey polyacrylamide colloid of this bulk specially from polymeric kettle bottom
In Screw Extrusion pulverizer, by the way that, by disintegrating cutter, it is fritter micelle that blob of viscose, which is crushed, so after screw rod drought
Fritter micelle is dried to the powder product for 20~80 mesh in next technique unit afterwards, this process includes gluey polyphosphazene polymer
The extrusion of compound blob of viscose is crushed, and the further operation such as dry.
The gluey polyacrylamide aqueous polymers of monoblock are extruded into an often difficult process from polymerization reaction kettle, especially
It is such as low water content under the conditions of some specific aggregations, the polymer of HMW etc., and the now bottom discharging of polymer is squeezed
Go out to granulate it is particularly difficult, generally bottom screw extrude pulverizer screw rod traction simultaneously also need to be passed through inside polymerization reaction kettle
0.2MPa~0.6MPa air pressure, usually compressed air or nitrogen, applying certain pressure is forced out monoblock colloidal polymer.
Therefore, the design pressure of polymerization reaction kettle will can bear pressure applied.Although pressure in equipment when polymerisation is carried out
Usually close to 0~0.05MPa of normal pressure, it is contemplated that by the technical process of blob of viscose extruding polymerization reactor, generally polymerization
The design pressure of kettle needs 0.8~1.0MPa.
Nevertheless, under the conditions of some particular polymers, the extrusion of gum polymers is also difficult to carry out sometimes, especially
It is the polyacrylamide gum polymers of HMW, sometimes due to the frictional force of kettle wall and overall blob of viscose is excessive, and is applied in kettle
Plus air pressure it is higher（0.3~0.6MPa), and pressure is normal pressure at discharging opening screw machine, causes pressure difference above and below blob of viscose excessive, makes
Above pushed and worn into blob of viscose, form perforation, the blob of viscose after being worn by pressure loses downward air pressure, that is, lost to following Screw Extrusion powder
The power of broken machine, this is needed gradually to restore under gravity to wait blob of viscose by prolonged standing process, and pressure is further continued for afterwards
Draw operation is carried out, even needs to take reactor apart sometimes and is manually cleared up, production efficiency is have impact on, while operating personnel people
Work cleaning labor intensity is big.
The content of the invention
, can be in lower pressure the invention provides one kind for above mentioned problem of the prior art（0.05~0.2MPa）
The lower polymerization reaction kettle component for extruding monoblock gum polymers in polymerization reaction kettle and its application method, can reduce equipment institute
Highest operating pressure is needed, and shortens the operating time, production efficiency of equipment is improved.
To achieve the above object, the technical scheme is that providing a kind of for being used as raw material using or comprising acrylamide
Reaction polymerization reaction kettle component and application method, wherein the polymerization reaction kettle component includes kettle, air-blowing mouthful and drum
Air pipe, the air-blowing mouthful and air-blowing pipeline connection source of the gas, the autoclave body bottom set discharging opening and connect prilling granulator, and it is special
Levy and be：
Lubricating fluid charge mouthful is set on the kettle, available for being passed through lubricating fluid and purge gas, each lubricating fluid charge
Lubricating fluid is connected on mouth to add pipeline to convey lubricating fluid.
The position of the lubricating fluid charge mouthful, can be in kettle direct tube section or cone preferably close cone section and direct tube section weld seam
Section, the distance that the general lubricating fluid charge mouthful bores section and direct tube section weld seam with the kettle is less than or equal to cone section perpendicular to ground
Vertical height, that is, bore section height 1/3；
Or, the lubricating fluid charge mouthful the kettle cone section and positioned at cone section height more than 2/3.
Each lubricating fluid adds and lubricating fluid measuring tank is set on pipeline, and each lubricating fluid measuring tank connects the source of the gas.
The lubricating fluid charge mouthful and its lubricating fluid add pipeline and usedStainless steel tube, preferablyStainless steel tube.
Blank flange is set on the mouth of pipe in each lubricating fluid charge mouthful insertion kettle, each blank flange uses spot welding and kettle
Inwall is fixed, and makes the fixation parallel with inner wall of kettle of each blank flange baseplane and gap is formed at mutual no spot welding as leading
Xiang Kong, the pilot hole enables lubricating fluid to be spread along kettle wall, forms effective lubricating layer.The mouth of pipe in each pilot hole formed
The distance between cover plate baseplane and inner wall of kettle are 1~3mm, preferably 2mm.
The top plane of the blank flange and the shape of baseplane are all circular, ellipse, oblate, the blank flange
Material it is identical with the material of kettle, it usually needs fillet processing, to avoid corner burr, acute angle.The top of the blank flange
Plane and the shape of baseplane are not limited to above-mentioned shape, as long as the effect can be reached.
The setting quantity of the lubricating fluid charge mouthful is 3~8, preferably 4~5 and the lubricating fluid meter of supporting identical quantity
The setting quantity of measuring tank, air-blowing mouthful and air-blowing pipeline can different and charging aperture quantity.Enter than 4 lubricating fluids as shown in Figure 1
Material mouth.
Charging aperture, autoclave body bottom discharging opening connection discharging ball valve and connecting screw rod extruding granulator are set at the top of the kettle
As prilling granulator, reactor kettle chuck is nested with outside kettle.
The lubricating fluid being passed through by lubricating fluid charge mouth is water or dispersant, and dispersant is kerosene class organic hydrocarbon or coal
Oils organic hydrocarbon mixing compounding liquid.
It is passed through nitrogen or air to control pressure in kettle, air-blowing mouthful by air-blowing mouthful and air-blowing pipeline in the kettle
Connect connection flow gauge on air-blowing pipeline, air-blowing pipeline, flowmeter connection source of the gas, as described above, connecting with each lubricating fluid measuring tank
Connect source of the gas similar, the air-blowing pipeline flow meter is also all connected with source of the gas.
Present invention also offers a kind of method using polymerization reaction kettle component as described above, it is characterised in that including with
Lower step：
1）By the charging aperture set at the top of kettle, add reaction raw materials and make in polymerisation, polymerization process
It is passed through nitrogen or compressed air with air-blowing mouthful and air-blowing pipeline and mixing is stirred to the reaction raw materials in kettle, it is anti-in polymerization
After should terminating, the polymer blob of viscose of monoblock is formed in kettle, draw operation is proceeded by；
2）Open autoclave body bottom discharging ball valve, start screw extruder pelletizer, while be filled with kettle compressed air or
Nitrogen is interval in 0.1~0.15MPa by Stress control in kettle, with compressed air or nitrogen by lubricating fluid in lubricating fluid measuring tank
Pipeline is added and in lubricating fluid charge mouthful press-in kettle by lubricating fluid with 0.1~0.8MPa pressure, lubricating fluid passes through each pipe
The pilot hole of velar plate baseplane and inner wall of kettle formation forms lubricating layer between inner wall of kettle and polymer blob of viscose, while kettle
Internal polymer blob of viscose is under the traction of air pressure and screw extruder pelletizer, smoothly discharging granulation, until completing.
In the above-mentioned methods, the formation of lubricating layer can reduce kettle wall and polymer joint frictional resistance.
The beneficial effects of the invention are as follows：
Introduce lubricating fluid and reduce the resistance that polymerisation completion post-consumer polymer is forced out polymerization reaction kettle, i.e. discharge resistance
Reduce, the gas pressure required for reducing in reactor kettle, so as to reduce polymerization reaction kettle design pressure, reduction equipment is thrown
Money, reduces operational danger；Equipment volume can be suitably increased, the separate unit reactor bigger compared with existing equipment is obtained.So as to carry
High efficiency, reduces energy consumption.
Blob of viscose is in Extrusion in conventional kettle, sometimes due to gas reactor hypertonia, and blob of viscose itself are combined by force
The factor such as relatively low is spent, causes extrusion operation deuterogenesis's pressure to wear phenomenon.Binder pressure when the reactor of the present invention is due to discharging
Reduction, effectively reduces the occurrence probability that pressure wears phenomenon.
Brief description of the drawings
Fig. 1 is the structural representation of the polymerization reaction kettle component of embodiment 1.
Fig. 2 is the structural representation of the reactor for setting lubricating fluid charge mouthful of the polymerization reaction kettle component of embodiment 1.
Fig. 3 is Fig. 2 horizontal cross.
Fig. 4 is Fig. 2 vertical cross-sectional.
Fig. 5 is a kind of structural representation of blank flange of the present invention.
Fig. 6 is the structural representation of another blank flange of the present invention.
Description of reference numerals：
1：Kettle；2-1、2-2、2-3、2-4：Lubricating fluid charge mouthful；3：Reactor kettle chuck；4：Discharge ball valve；5：Profit
Synovia adds pipeline；6：Air-blowing mouthful and air-blowing pipeline；7：Lubricating fluid measuring tank；8：Screw extruder pelletizer；9：Blank flange；
10：Source of the gas；11：Flowmeter；a：Lubricating fluid；b：Nitrogen.
Embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment 1
It is a kind of to be used for the polymerization reaction kettle component and application method using or comprising acrylamide as the reaction of raw material, its
Described in polymerization reaction kettle component include kettle 1, air-blowing mouthful and air-blowing pipeline 6, the air-blowing mouthful and the connection source of the gas of air-blowing pipeline 6
10（Four groups altogether）, the bottom of kettle 1 sets discharging opening and connected sets lubricating fluid charge on prilling granulator, the kettle 1
Mouthful 2-1,2-2,2-3,2-4, available for being passed through lubricating fluid and purge gas, each lubricating fluid charge mouthful 2-1,2-2,2-3,2-4
Upper connection lubricating fluid adds pipeline 5 to convey lubricating fluid.Each lubricating fluid adds and lubricating fluid measuring tank 7 is set on pipeline 5, each lubrication
Liquid measuring tank 7 connects the source of the gas 10.
The top of kettle 1 sets charging aperture, and the bottom discharge mouthful of kettle 1 connects discharging ball valve 4 and connecting screw rod extrusion is made
Grain machine 8 is nested with reactor kettle chuck 3 outside as prilling granulator, kettle 1.
The a diameter of φ 1000mm of the direct tube section of kettle 1 in the present embodiment, straight tube segment length, i.e., above and below vertical direction be highly
2000mm, bores segment length 600mm, and cone section vertical angle is 30 °, that is, it is 30 ° to bore section side wall with direct tube section angle at an acute angle,
The discharging ball valve 4 of the discharging opening connection of colloid is the electronic discharging ball valves of DN400.The cone section of kettle 1 sets four lubricating fluid charges
Mouth 2-1,2-2,2-3,2-4 and supporting identical quantity lubricating fluid measuring tank 7, position is in cone section close to direct tube section with boring section weld seam
Position, the level in equipment is uniform in sustained height for four charging apertures.
Described lubricating fluid charge mouthful 2-1,2-2,2-3,2-4 and its lubricating fluid add pipeline 5 and use φ 8 × 1mm stainless steels
Pipe.
Blank flange 9, each mouth of pipe are set on the mouth of pipe in each lubricating fluid charge mouthful 2-1,2-2,2-3,2-4 insertion kettle 1
Cover plate 9 is fixed using spot welding with the inwall of kettle 1, makes the fixation parallel with the inwall of kettle 1 of each baseplane of blank flange 9 and is not having mutually
Have and gap is formed at spot welding as pilot hole, the pilot hole enables lubricating fluid to be spread along kettle wall, form effective lubricating layer.
The distance between the baseplane of blank flange 9 and the inwall of kettle 1 are 2mm in each pilot hole formed.
The top plane of the blank flange 9 and the shape of baseplane are all circle, material and the kettle 1 of blank flange 9
Material is identical, fillet processing.
The lubricating fluid being passed through in the lubricating fluid charge mouthful 2-1,2-2,2-3,2-4 is water.
It is passed through nitrogen or air to control pressure in kettle 1 by air-blowing mouthful and air-blowing pipeline 6 in the kettle 1, drum
Gas port connects air-blowing pipeline, connection flow gauge 11 on air-blowing pipeline, the connection source of the gas 10 of flowmeter 11, as described above, with each lubrication
The connection source of the gas 10 of liquid measuring tank 7 is similar, and the air-blowing pipeline flow meter 11 is also all connected with source of the gas 10.The use of the present embodiment
Method is as follows：
1）The charging aperture set by the top of kettle 1, adds reaction raw materials and requires to carry out polymerisation according to reaction process,
It is passed through nitrogen using air-blowing mouthful and air-blowing pipeline 6 in polymerization process and mixing is stirred to the reaction raw materials in kettle 1,
After polymerisation terminates, the polymer blob of viscose of monoblock is formed in kettle 1, draw operation is proceeded by；
2）The bottom discharge ball valve 4 of kettle 1 is opened, starts screw extruder pelletizer 8, while it is empty that compression is filled with kettle 1
Gas, Stress control in kettle 1 is interval in 0.1~0.15MPa, with compressed air or nitrogen（Drum nitrogen operation is that chemical reaction is needed
Ask, for production cost angle is saved during draw operation, pressure source is used as using compressed air.Nitrogen can also be used）Will profit
Lubricating fluid adds pipeline 5 and by lubricating fluid charge mouthful 2-1,2- with 0.1~0.8MPa pressure by lubricating fluid in synovia measuring tank 7
2nd, 2-3,2-4 are pressed into kettle 1, and each lubricating fluid charge mouthful 2-1,2-2,2-3,2-4 are slowly added to 1.0L lubricating fluids, Ke Yiwei
0.5L~3L, lubricating fluid adds control and added in 3~10 minutes；Lubricating fluid passes through in each baseplane of blank flange 9 and kettle 1
The pilot hole of wall formation forms lubricating layer between the inwall of kettle 1 and polymer blob of viscose, while the interpolymer blob of viscose of kettle 1 is in gas
Under the traction of pressure and screw extruder pelletizer 8, smoothly discharging granulation, until completing.Period slowly adds lubricating fluid by several times and amounted to
4L, the time continues 20 minutes.Colloid discharging process is steady, smoothly completes and discharged in the case where kettle pressure is not less than 0.15MPa
Journey.Discharging time is 32 minutes.Pressure does not occur and wears phenomenon.
Comparative example 1
The polymerization reaction kettle component that comparative example 1 is used, the difference of itself and embodiment 1 is：Remove lubricating fluid charge mouthful 2-
1st, 2-2,2-3,2-4 and lubricating fluid add pipeline 5, lubricating fluid measuring tank 7, blank flange 9, miscellaneous part and its annexation
It is same as Example 1, application method step 1）Same as Example 1, reaction to be polymerized terminates, and monoblock polymer latex is formed in kettle
Block, proceeds by draw operation.
Autoclave body bottom discharging ball valve is opened, starts screw extruder pelletizer, while compressed air is filled with kettle, by kettle
Stress control colloid in 0.15MPa, kettle under the traction of air pressure and screw extruder pelletizer, starts draw operation in body 1.
Discharging speed is significantly lower than gas pressure in embodiment 1, control kettle and, in 0.2~0.3MPa, completed until discharging.Discharging time
For 127 minutes.
Comparative example 2
The polymerization reaction kettle component that comparative example 2 is used, the difference of itself and embodiment 1 is：Remove lubricating fluid charge mouthful 2-
1st, 2-2,2-3,2-4 and lubricating fluid add pipeline 5, lubricating fluid measuring tank 7, blank flange 9, miscellaneous part and its annexation
It is same as Example 1, application method step 1）Same as Example 1, reaction to be polymerized terminates, and monoblock polymer latex is formed in kettle
Block, proceeds by draw operation.
Autoclave body bottom discharging ball valve is opened, starts screw extruder pelletizer, while compressed air is filled with kettle, by kettle
Stress control is in 0.4~0.45MPa is interval in body 1, and colloid is opened under the traction of air pressure and screw extruder pelletizer in kettle
Beginning draw operation, during which controls gas pressure in kettle in 0.4~0.45MPa, to be completed until discharging.Discharging time is 43 points
Clock.
Embodiment 2
Embodiment 2 and the difference of the polymerization reaction kettle component of embodiment 1 are：
The direct tube section of kettle 1 a diameter of φ 1800mm, a length of 3150mm of direct tube section, cone segment length 1300mm.Embodiment 2 it is poly-
Other features for closing reactor component are same as Example 1.
The application method of the present embodiment is as follows：
1）The charging aperture set by the top of kettle 1, adds reaction raw materials and requires to carry out polymerisation according to reaction process,
It is passed through nitrogen using air-blowing mouthful and air-blowing pipeline 6 in polymerization process and mixing is stirred to the reaction raw materials in kettle 1,
After polymerisation terminates, the polymer blob of viscose of monoblock is formed in kettle 1, draw operation is proceeded by；
2）The bottom discharge ball valve 4 of kettle 1 is opened, starts screw extruder pelletizer 8, while it is empty that compression is filled with kettle 1
Gas, Stress control in kettle 1 is interval in 0.15~0.20MPa, it will be lubricated with compressed air or nitrogen in lubricating fluid measuring tank 7
Liquid adds pipeline 5 by lubricating fluid with 0.1~0.8MPa pressure and is pressed into kettle by lubricating fluid charge mouthful 2-1,2-2,2-3,2-4
In 1, each lubricating fluid charge mouthful 2-1,2-2,2-3,2-4 are slowly added to 8.0L lubricating fluids, can be 5L~10L, and lubricating fluid adds
Enter control to add in 10~30 minutes；Lubricating fluid is existed by the pilot hole of each baseplane of blank flange 9 and the formation of the inwall of kettle 1
Lubricating layer is formed between the inwall of kettle 1 and polymer blob of viscose, while the interpolymer blob of viscose of kettle 1 is granulated in air pressure and Screw Extrusion
Under the traction of machine 8, smoothly discharging granulation, until completing.Period slowly adds lubricating fluid 40L altogether by several times, and the time continues 60 points
Clock.Colloid discharging process is steady, and discharging process is smoothly completed in the case where kettle pressure is not less than 0.20MPa.Discharging time is 125
Minute.Pressure does not occur and wears phenomenon.
Comparative example 3
The polymerization reaction kettle component that comparative example 3 is used, the difference of itself and embodiment 2 is：Remove lubricating fluid charge mouthful 2-
1st, 2-2,2-3,2-4 and lubricating fluid add pipeline 5, lubricating fluid measuring tank 7, blank flange 9, miscellaneous part and its annexation
It is same as Example 2, application method step 1）Same as Example 2, reaction to be polymerized terminates, and monoblock polymer latex is formed in kettle
Block, proceeds by draw operation.
Autoclave body bottom discharging ball valve is opened, starts screw extruder pelletizer, while compressed air is filled with kettle, by kettle
Stress control is in 0.5~0.6MPa is interval in body 1, and colloid is opened under the traction of air pressure and screw extruder pelletizer in kettle
Beginning draw operation, during which controls gas pressure in kettle in 0.5~0.6MPa, persistently to be discharged.Discharging time is 108 minutes
When, occur pressure and wear phenomenon, pressed and worn due to blob of viscose, form stomata, gas reactor is discharged to screw extruder pelletizer by stomata
In, pressure can not be kept in kettle, and discharging stops.Normal pressure is carried out to remaining blob of viscose in kettle and stands restoration disposal, after standing 30 minutes
0.35MPa is progressively boosted to, proceeds discharging, being discharged after 76 minutes completes.Discharge 214 minutes Process Total used times.
Claims (13)
1. a kind of polymerization reaction kettle component, to contain reaction of the acrylamide as raw material, it includes kettle, air-blowing mouthful and drum
Air pipe, the air-blowing mouthful and air-blowing pipeline connection source of the gas, the autoclave body bottom set discharging opening and connect prilling granulator, and it is special
Levy and be：
Connection lubricating fluid on lubricating fluid charge mouthful, each lubricating fluid charge mouthful is set to add pipeline to convey lubrication on the kettle
Liquid；Each lubricating fluid adds and lubricating fluid measuring tank is set on pipeline, and each lubricating fluid measuring tank connects the source of the gas；Each lubricating fluid charge
Blank flange is set on the mouth of pipe in mouth insertion kettle, each blank flange is fixed using spot welding with inner wall of kettle, makes each mouthpiece cover
The fixation parallel with inner wall of kettle of plate baseplane does not simultaneously have formation gap at spot welding to be used as pilot hole mutual.
2. a kind of polymerization reaction kettle component according to claim 1, it is characterised in that：
The distance that the lubricating fluid charge mouthful bores section and direct tube section weld seam with the kettle is less than or equal to cone section perpendicular to ground
The 1/3 of vertical height.
3. a kind of polymerization reaction kettle component according to claim 2, it is characterised in that：
The lubricating fluid charge mouthful the kettle cone section and positioned at cone section height more than 2/3.
4. a kind of polymerization reaction kettle component according to claim 1 or 2, it is characterised in that：
The lubricating fluid charge mouthful and its lubricating fluid add pipeline and usedStainless steel tube.
5. a kind of polymerization reaction kettle component according to claim 1 or 2, it is characterised in that：
The lubricating fluid charge mouthful and its lubricating fluid add pipeline and usedStainless steel tube.
6. a kind of polymerization reaction kettle component according to claim 1 or 2, it is characterised in that：
The distance between blank flange baseplane and inner wall of kettle are 1~3mm in each pilot hole formed.
7. a kind of polymerization reaction kettle component according to claim 6, it is characterised in that：
The distance between blank flange baseplane and inner wall of kettle are 2mm in each pilot hole formed.
8. a kind of polymerization reaction kettle component according to claim 1, it is characterised in that：
The top plane of the blank flange and the shape of baseplane are all circular, ellipse, oblate, the material of the blank flange
Matter is identical with the material of kettle.
9. a kind of polymerization reaction kettle component according to claim 1 or 2, it is characterised in that：
The setting quantity of the lubricating fluid charge mouthful is 3~8 and the lubricating fluid measuring tank of supporting identical quantity.
10. a kind of polymerization reaction kettle component according to claim 9, it is characterised in that：
The setting quantity of the lubricating fluid charge mouthful is 4~5 and the lubricating fluid measuring tank of supporting identical quantity.
11. a kind of polymerization reaction kettle component according to claim 1, it is characterised in that：
Charging aperture, autoclave body bottom discharging opening connection discharging ball valve and connecting screw rod extruding granulator conduct are set at the top of the kettle
Reactor kettle chuck is nested with outside prilling granulator, kettle.
12. a kind of polymerization reaction kettle component according to claim 1, it is characterised in that：
It is passed through nitrogen or compressed air to control pressure in kettle by air-blowing mouthful and air-blowing pipeline in the kettle.
13. a kind of method of polymerization reaction kettle component using as described in any one of claim 1~12, it is characterised in that including
Following steps：
1) by the charging aperture set at the top of kettle, reaction raw materials is added and are carried out in polymerisation, polymerization process using drum
Gas port and air-blowing pipeline are passed through nitrogen or compressed air and are stirred mixing to the reaction raw materials in kettle, in polymerisation knot
The polymer blob of viscose of monoblock is formed in Shu Hou, kettle, draw operation is proceeded by；
2) autoclave body bottom discharging ball valve is opened, starts screw extruder pelletizer, while being filled with compressed air or nitrogen in kettle
Stress control in kettle is interval in 0.1~0.15MPa, with compressed air or nitrogen by lubricating fluid in lubricating fluid measuring tank with
0.1~0.8MPa pressure adds pipeline and in lubricating fluid charge mouthful press-in kettle by lubricating fluid, and lubricating fluid passes through each mouth of pipe
The pilot hole of cover plate baseplane and inner wall of kettle formation forms lubricating layer between inner wall of kettle and polymer blob of viscose, while kettle
Interpolymer blob of viscose is under the traction of air pressure and screw extruder pelletizer, smoothly discharging granulation, until completing.
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| CN104558309A (en) | 2015-04-29 |
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