CN102816344A - Granulation method for liquid rubber auxiliaries - Google Patents
Granulation method for liquid rubber auxiliaries Download PDFInfo
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- CN102816344A CN102816344A CN 201210317691 CN201210317691A CN102816344A CN 102816344 A CN102816344 A CN 102816344A CN 201210317691 CN201210317691 CN 201210317691 CN 201210317691 A CN201210317691 A CN 201210317691A CN 102816344 A CN102816344 A CN 102816344A
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Abstract
The invention relates to a granulation method for liquid rubber auxiliaries and belongs to the technical field of production of rubber auxiliaries. The granulation method is simple in process, low in operational cost and capable of continuous production. The technical scheme includes: cooling liquid 4020 materials to 60 DEG C to 70 DEG C by circulating water, then crystallizing in a scraping heat exchanger, and finally granulating in a steel belt granulator. In 4020 granulation process, the granulation method for the liquid rubber auxiliaries is accurate in crystallization process, convenient for temperature control, simple in operation, low in cost of refrigerants used, lowered in dangerousness of methanol serving as cooling liquid, guaranteed in continuous granulation, high in automation level, low in production cost and suitable for continuous large-scale production.
Description
Technical field
A kind of fluid rubber auxiliary agent of the present invention prilling process belongs to the rubber ingredients production technical field.
Background technology
Rubber ingredients play very vital role in the Rubber processing process, directly affect the processing characteristics of rubber and the use properties of product.Present domestic rubber ingredients are main with powder, and particularly in medium and small auxiliary agent enterprise, dry big with the packing shop dust, workman's labor condition is poor, and while material consumption index is higher, and environmental pollution is serious.
The rubber ingredients agglomeration technique has wet method extruding pelletization method and fusion condensation comminution granulation.
Mostly present 4020 granulation process is to adopt fusion condensation comminution granulation.Fusion condensation comminution granulation is a high temperature melting mobile characteristic of utilizing material; Range of viscosities during according to the material molten state; The fusion feed liquid is distributed on the steel band that at the uniform velocity moves its below through special distribution device; The continuous spray equipment that utilizes the steel band below to be provided with is simultaneously realized forcing cooling, makes material in the process of reach, obtain condensation, thereby realizes continuously shaped granulation.Distributor is one of key part of moulding, can be according to the difference of material properties and specific processing requirement, select reciprocating type, outward turning, inner-rotary type respectively.In addition according to use, the difference of purpose can be selected whole width overflow, shaping, interrupted mode such as drip continuously.
The key of this technology is to want the relative quantity of careful ground controlled chilling time and feed temperature.Feed temperature is too high, causes molten materials viscosity low excessively, and the particle of formation is thinner; Feed temperature is low excessively, and material viscosity is bigger than normal, and fluid flow resistance is bigger, and flow can not in time be cut off, and forms the particle hangover.In order better to regulate cooling time and feed temperature, combine concrete Process configuration to set up the medium temperature setting device and regulate temperature of charge, thereby obtain needed homogeneous granules product.
There is certain limitation simultaneously in the use of this technology, and the particularly most promotor of rubber ingredients is decomposed or oxidation under molten state easily, limits this technological use range.In addition, cool off the particle of processing through fusion, general hardness is bigger, according to the characteristic of concrete kind, suitably adds other certain component when in the Rubber processing process, using, and reduces the hardness of particle.Degree of supercooling is bigger when having some auxiliary agent kinds to solidify, but temperature is when being lower than fusing point or softening temperature certain value, and crystallization velocity or setting rate have very fast, cause processing condition such as temperature, speed of cooling to be difficult to control.To these auxiliary agents, must in material, add crystallization nucleating agent or increase preparatory crystallization processes, regulate the temperature of solidification and the speed of material, realize granulating working procedure smoothly.
The melting and solidification method is produced particle 4020 process methodes, is be that raw material is through preparatory crystallization processes, with cooling tower or steel band tablets press production particle 4020, referring to publication number: CN200610135744.X, CN1235153 A with liquid 4020.Though these methods are all obtaining effect aspect granulating rate, product production, suitability for industrialized production and the environmental pollution; But have some shortcomings: one is that the difficult control of 4020 crystallizations, granulating working procedure operating unit are complicated; Mold stops up serious, can not fine continuous crystallisation, and quality product batch fluctuation; The 2nd, cooling tower needs special methyl alcohol quench liquid, and the granulation tensio-active agent has increased the danger in the unit process, has increased simultaneously to separating the later separation operating unit that alcohol increases, and facility investment and running cost are increased, and production cost improves.
Summary of the invention
The present invention provides a kind of technology simple in order to overcome the deficiency of prior art, the cheap rubber ingredients prilling process of can serialization producing of running cost.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of fluid rubber auxiliary agent prilling process carries out according to following steps:
The first step, circulating water cooling
Liquid 4020 materials have 90-100 ℃ to be cooled to 70-80 ℃ through water cooler, enter into surge tank, and liquid 4020 materials further are cooled to 60-70 ℃ at surge tank through chuck recirculated water;
Second step, crystallization
Said liquid 4020 materials come out to squeeze into the scraping interchanger through recycle pump from surge tank; Logical 18-22 ℃ of refrigerated water lowered the temperature in the scraping interchanger chuck; Liquid 4020 materials gradually crystallization for partly solidifying attitude; It is big that viscosity becomes, and scraping interchanger current break is to 23-25A, and 4020 materials that will partly solidify are then squeezed into the steel band tablets press through discharge pump and carried out granulation;
The 3rd step, granulation
Regulate 48-50 ℃ of steel band tablets press sparger temperature, steel band rotating speed 10-15m/s, the drippage unit frequency is counted 30-34Hz, 22-25 ℃ of steel band temperature of cooling water, 4020 material particles of producing are hemispherical for rule, pack through screening.
The used refrigerant of said scraping interchanger is a refrigerated water, and refrigerated water is prepared by refrigerator.
Said surge tank refrigerant is a recirculated water.
Said steel band tablets press refrigerant is a recirculated water.
Circulating water cooling, the liquid material that reflects cools to 70-80 ℃ through water cooler by 90-100 ℃, enters into the material buffer jar.Material further is cooled to 60-70 ℃ at surge tank through chuck recirculated water.
Crystallisation process; Material comes out to squeeze into the scraping interchanger through recycle pump from surge tank; Logical refrigerated water is lowered the temperature in the scraping interchanger chuck, and crystallization is for partly solidifying attitude gradually for material, and it is big that viscosity becomes; Scraping interchanger current break is squeezed into the steel band tablets press through discharge pump then and is carried out granulation to 23-25A.
Granulation process is regulated 48-50 ℃ of tablets press sparger temperature, steel band rotating speed 10-15 meter per second, and the drippage unit frequency is counted 30-34Hz, and the particle of producing is hemispherical for rule.Scraping interchanger profile is the jacketed cylindrical shell, logical refrigerated water in the chuck, and the cylindrical shell central rotating shaft is rotating blade fixedly, blade and cylinder inboard wall spacing 2mm, material is met cold crystallization at cylinder inboard wall, scrapes through the blade rotation.
Through TP and the chain control refrigerated water of pneumavalve add-on, regulate insulation water temp and flow.
The present invention prepares rubber ingredients particulate method, through temperature control system chuck material pipeline is fed insulation water and is incubated, and the insulation hydromining is used softening water; Reduce incrustation scale; Strict control temperature of charge is guaranteed continuous granulation, and all attemperater roads all adopt the chain control of robotization temperature.
Adopt refrigerator to prepare refrigerated water, feed scraping interchanger chuck, be convenient to the material rapid crystallization.Special scraping interchanger profile is the jacketed cylindrical shell, logical refrigerated water in the chuck, and the cylindrical shell central rotating shaft is rotating blade fixedly, blade and cylinder inboard wall spacing 2mm, material is met cold crystallization at cylinder inboard wall, in time the crystallized stock rotation is scraped through blade.Simultaneously a part of crystallized stock is returned the scraping interchanger as crystal seed through the material recycle pump, be convenient to the material rapid crystallization.
The steel band tablets press adopts two cover systems to supply with recirculated cooling water, and general month is adopted the water cooling tower circulating water cooling, when summer temperature is higher, adopts the refrigerated water closed system to carry out the steel band cooling.
Generalized case material buffer jar chuck is tentatively lowered the temperature to material through recirculated water, runs into material viscosity when too big, feeds steam in the chuck and heats up.
The material cooler casing is tentatively lowered the temperature to material through recirculated water, runs into material viscosity when too big, feeds steam in the housing and heats up.
Scratch type interchanger and material jacketed piping generally are that logical refrigerated water is lowered the temperature, and when material viscosity is too big, stop refrigerated water, change by electric heater or steam in the attemperater road insulation water is heated up, and its cooling heats up and all adopts the chain automatic control of temperature.
The scraping interchanger that adopts in present method is bought from the Zhangjagang City along rising metal products ltd.
The beneficial effect that the present invention compared with prior art has is: the present invention is in to 4020 granulation process, and the crystallization processes accurate temperature controlling is convenient to control, and simple to operate, and the refrigerant of use is with low cost, has reduced the danger of methyl alcohol as quench liquid.Guarantee continuous granulation, level of automation is high, and production cost is low, is applicable to continuous large-scale production.
Embodiment
Below in conjunction with specific embodiment the present invention is described further.
Embodiment 1
A kind of fluid rubber auxiliary agent prilling process carries out according to following steps:
The first step, circulating water cooling
Liquid 4020 materials have 100 ℃ to be cooled to 70 ℃ through water cooler, enter into surge tank, and liquid 4020 materials further are cooled to 70 ℃ at surge tank through chuck recirculated water, and the surge tank refrigerant is a recirculated water;
Second step, crystallization
Liquid 4020 materials come out to squeeze into the scraping interchanger through recycle pump from surge tank; Logical 22 ℃ of refrigerated waters are lowered the temperature in the scraping interchanger chuck, and the used refrigerant of scraping interchanger is a refrigerated water, and refrigerated water is prepared by refrigerator; Liquid 4020 materials gradually crystallization for partly solidifying attitude; It is big that viscosity becomes, and scraping interchanger current break is to 25A, and 4020 materials that will partly solidify are then squeezed into the steel band tablets press through discharge pump and carried out granulation;
The 3rd step, granulation
Regulate 50 ℃ of steel band tablets press sparger temperature, steel band rotating speed 10m/s, the drippage unit frequency is counted 30Hz, 25 ℃ of steel band temperature of cooling water, steel band tablets press refrigerant is a recirculated water, 4020 material particles of producing are hemispherical for rule, pack through screening.
Embodiment 2
A kind of fluid rubber auxiliary agent prilling process carries out according to following steps:
The first step, circulating water cooling
Liquid 4020 materials have 90 ℃ to be cooled to 80 ℃ through water cooler, enter into surge tank, and liquid 4020 materials further are cooled to 60 ℃ at surge tank through chuck recirculated water, and the surge tank refrigerant is a recirculated water;
Second step, crystallization
Liquid 4020 materials come out to squeeze into the scraping interchanger through recycle pump from surge tank; Logical 18 ℃ of refrigerated waters are lowered the temperature in the scraping interchanger chuck, and the used refrigerant of scraping interchanger is a refrigerated water, and refrigerated water is prepared by refrigerator; Liquid 4020 materials gradually crystallization for partly solidifying attitude; It is big that viscosity becomes, and scraping interchanger current break is to 23A, and 4020 materials that will partly solidify are then squeezed into the steel band tablets press through discharge pump and carried out granulation;
The 3rd step, granulation
Regulate 48 ℃ of steel band tablets press sparger temperature, steel band rotating speed 15m/s, the drippage unit frequency is counted 34Hz, 22 ℃ of steel band temperature of cooling water, steel band tablets press refrigerant is a recirculated water, 4020 material particles of producing are hemispherical for rule, pack through screening.
Embodiment 3
A kind of fluid rubber auxiliary agent prilling process carries out according to following steps:
The first step, circulating water cooling
Liquid 4020 materials have 95 ℃ to be cooled to 75 ℃ through water cooler, enter into surge tank, and liquid 4020 materials further are cooled to 65 ℃ at surge tank through chuck recirculated water, and the surge tank refrigerant is a recirculated water;
Second step, crystallization
Liquid 4020 materials come out to squeeze into the scraping interchanger through recycle pump from surge tank; Logical 20 ℃ of refrigerated waters are lowered the temperature in the scraping interchanger chuck, and the used refrigerant of scraping interchanger is a refrigerated water, and refrigerated water is prepared by refrigerator; Liquid 4020 materials gradually crystallization for partly solidifying attitude; It is big that viscosity becomes, and scraping interchanger current break is to 24A, and 4020 materials that will partly solidify are then squeezed into the steel band tablets press through discharge pump and carried out granulation;
The 3rd step, granulation
Regulate 49 ℃ of steel band tablets press sparger temperature, steel band rotating speed 12m/s, the drippage unit frequency is counted 32Hz, 24 ℃ of steel band temperature of cooling water, steel band tablets press refrigerant is a recirculated water, 4020 material particles of producing are hemispherical for rule, pack through screening.
The present invention can summarize with other the specific form without prejudice to spirit of the present invention or principal character.Therefore; No matter from that, above-mentioned embodiment of the present invention all can only be thought can not limit invention to explanation of the present invention, and claims have been pointed out scope of the present invention; And scope of the present invention is not pointed out in above-mentioned explanation; Therefore, in implication suitable and any variation in the scope, all should think to be included in the scope of claims with claims of the present invention.
Claims (4)
1. fluid rubber auxiliary agent prilling process is characterized in that carrying out according to following steps:
The first step, circulating water cooling
Liquid 4020 materials have 90-100 ℃ to be cooled to 70-80 ℃ through water cooler, enter into surge tank, and liquid 4020 materials further are cooled to 60-70 ℃ at surge tank through chuck recirculated water;
Second step, crystallization
Said liquid 4020 materials come out to squeeze into the scraping interchanger through recycle pump from surge tank; Logical 18-22 ℃ of refrigerated water lowered the temperature in the scraping interchanger chuck; Liquid 4020 materials gradually crystallization for partly solidifying attitude; It is big that viscosity becomes, and scraping interchanger current break is to 23-25A, and 4020 materials that will partly solidify are then squeezed into the steel band tablets press through discharge pump and carried out granulation;
The 3rd step, granulation
Regulate 48-50 ℃ of steel band tablets press sparger temperature, steel band rotating speed 10-15m/s, the drippage unit frequency is counted 30-34Hz, 22-25 ℃ of steel band temperature of cooling water, 4020 material particles of producing are hemispherical for rule, pack through screening.
2. a kind of fluid rubber auxiliary agent prilling process according to claim 1 is characterized in that the used refrigerant of said scraping interchanger is a refrigerated water, and refrigerated water is prepared by refrigerator.
3. a kind of fluid rubber auxiliary agent prilling process according to claim 1 is characterized in that said surge tank refrigerant is a recirculated water.
4. a kind of fluid rubber auxiliary agent prilling process according to claim 1 is characterized in that said steel band tablets press refrigerant is a recirculated water.
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| CN 201210317691 CN102816344A (en) | 2012-08-31 | 2012-08-31 | Granulation method for liquid rubber auxiliaries |
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| CN 201210317691 CN102816344A (en) | 2012-08-31 | 2012-08-31 | Granulation method for liquid rubber auxiliaries |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113559786A (en) * | 2021-07-29 | 2021-10-29 | 南通江山农药化工股份有限公司 | Continuous granulating process equipment for trichlorfon |
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2012
- 2012-08-31 CN CN 201210317691 patent/CN102816344A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113559786A (en) * | 2021-07-29 | 2021-10-29 | 南通江山农药化工股份有限公司 | Continuous granulating process equipment for trichlorfon |
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Inventor after: Yuan Junwu Inventor before: Xue Zhibing |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: XUE ZHIBING TO: YUAN JUNWU |
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Application publication date: 20121212 |