CN1170663C - Technology for producing fine rubber powder by method of liquefied nitrogen internal circulation type recovering cold energy - Google Patents
Technology for producing fine rubber powder by method of liquefied nitrogen internal circulation type recovering cold energy Download PDFInfo
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- CN1170663C CN1170663C CNB001098896A CN00109889A CN1170663C CN 1170663 C CN1170663 C CN 1170663C CN B001098896 A CNB001098896 A CN B001098896A CN 00109889 A CN00109889 A CN 00109889A CN 1170663 C CN1170663 C CN 1170663C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The present invention relates to processing production technology, particularly to processing technology for pulverizing junked tires into fine rubber powder of 80 to 120 meshes. The processing technology belongs to the field of chemical industry processing and comprises the production technology of normal temperature coarse rubber powder and the fine processing technology of liquid nitrogen treatment. The production process of the normal temperature coarse rubber powder comprises: cutting the junked tires into rings, roughly cutting, cleaning, intermediately crushing, winnowing, magnetically separating, finely crushing, winnowing, magnetically separating and storing. The production process of deeply cooling the fine rubber powder comprises: coarse rubber powder precooling, deep cooling, cold grinding, mixed heat exchanging and cold quantity internal circulation recovering. A cold quantity recovery system has the advantages of liquid nitrogen saving, energy saving and high energy utilization rate. Because constant temperature grinding for cold grinding is kept, product quality is good, continuous production is ensured, and the conditions of industrial production are provided.
Description
The invention belongs to a kind of production technology, be applicable to cutting, cleaning, the pulverizing of tire with junked tire processing fine rubber powder.Be processed into fine rubber powder.
This vehicles of automobile have spread all over each countries and regions, the world, have the people that automobile is just arranged.And the wearing and tearing of doughnut, change frequent carrying out, make waste tire cause serious pollution to earth natural environment, and wasting a large amount of natural resources.Be processed into fine powder if a large amount of junked tires is carried out fragmentation, first can handle the black pollution of this tire; Second can turn waste into wealth, and fine glue powder can add plastics, cement, pitch prill as senior additive ... becoming new material improves its characteristic, enlarges purposes.The idea of this processing junked tire, western countries have just begun research as far back as the seventies.70 to the eighties, and junked tire can only reach 45 orders～60 orders through fragmentation, and productivity ratio is also extremely low.And begun the research of fine glue powder the nineties, attrition crushing machinery facture occurs under the Russian normal temperature and produced the following rubber powder of 80 orders.China once bought several equipment (Shanxi, Liaoning) and all can not produce continuously.Reason is to produce a large amount of high temperature to make rubber bound when extruding, can't produce.Secondly, the U.S. adopts liquid nitrogen to handle the crude rubber particle, grinds the technology success that reaches the above fine glue powder of 120 orders then.A set of equipment is introduced in China Xuzhou, owing to the equipment heat extraction that grinds part is not smooth, also can't produce continuously, and sticking mill is serious.Because the imperfection of technology, power consumption is bigger, though be because principle is successful, the incomplete result of technology.
Domestic existing water-cooling process also is to have high temperature to produce, and has auxiliary air to pollute.Another kind of phenomenon is that process equipment is simple, power consumption is big.In a word, regeneration is handled about junked tire, and normal temperature, water-cooled, liquid nitrogen deep are arranged.Method is a lot, it seems at present to handle more satisfactoryly with liquid nitrogen, but because adopting process and equipment difference, number average is among inquiring into and groping mostly.
The present invention has formulated the technology of a cover from thick to the broken junked tire of fine powder, and technology is divided two parts:
First: at normal temperatures the whole piece doughnut is carried out laser and cut circle, rough lumber, cleaning, coarse crushing, remove fabric, remove metal object, in small, broken bits, sorting, mainly adopted laser to cut the circle machine, the whole piece tire of cutting behind the circle has been put into the coarse cutter that 22 pairs of cutting knifes of 4 groups of rollers are housed the steel ring of tire excision.Be cut into the blob of viscose of 25mm * 25mm, clean, use an intermediate crusher that 25mm * 25mm blob of viscose is crushed to 5 orders～10 purpose micelles again, rub the fiber in the tire, steel wire from rubber with the hands this moment, is free in the rubber powder.Isolate coma with selection by winnowing, adopt magnetic separator again, select the finer wire and the metal object that are mixed in the rubber powder.5 orders～10 purpose rubber powders are sent into fine crusher rubber powder after in small, broken bits become 20 orders～40 purpose normal temperature rubber powders.
Second portion: carry out cooled with liquid nitrogen to-55 ℃ in the input normal temperature 20 orders～thick rubber powder to two of 40 purposes special-purpose precooling jar, handle carrying out liquid nitrogen deep in the special-purpose main body jar of the deep cooling of-80 ℃～-100 ℃ of its inputs, at this moment the crude rubber particle has reached the vitreum state, can import and carry out meticulous pulverizing in the special-purpose cold grinding, the product that comes out is that this fine glue powder that contains-75 ℃ of low temperature of 80～120 purpose fine glue powders (calling product in the following text) is carried by gas, import and carry out heat exchange with thick rubber powder in No. 4 blending tank and finish, thick rubber powder temperature is reduced to X
4℃ special-purpose precooling jar of input, further precooling, and the X of heat exchange in the blending tank
4℃ product is input in No. 3 blending tanks the thick rubber powders that come with No. 2 special-purpose blending tanks and carries out heat exchange, reaches X
3℃ low temperature is again reaching X
3The product rubber powder of ℃ low temperature is input in No. 2 special-purpose blending tanks, reaches X
3℃ thick rubber powder be input in No. 4 jars X
3℃ No. 2 blending tanks of product rubber powder input in the thick rubber powder that comes with No. 1 special-purpose blending tank carry out heat exchange, temperature reaches X in No. 2 special-purpose blending tanks
2℃ low temperature is with X
2The product rubber powder of ℃ temperature is input in No. 1 special-purpose blending tank, with X
2The thick rubber powder of ℃ temperature is input in No. 3 special-purpose blending tanks, and in No. 1 jar X
2℃ product rubber powder and the thick rubber powder heat exchange of normal temperature, a temperature reaches X in jar
1℃ the time, X
1No. 2 special-purpose blending tanks of ℃ thick rubber powder input, and X
1℃ low temperature overwhelming majority that the product rubber powder has contained self has given normal temperature thick rubber powder, and self temperature be elevated to+5 ℃.In sum: adopt 4 heat of mixing switches of a cover, will contain the very fine glue powder and the heat of mixing exchange in device of normal temperature rubber powder of low temperature, remove precooling normal temperature rubber powder with the low temperature fine glue powder.To not reach the low temperature nitrogen precooling again of the thick rubber powder input subzero treatment discharge of precooling temperature again with 2 pre-coolers of a cover, add a small amount of liquid nitrogen in the time of suitably, make temperature reach-55 ℃ of precooling requirements, adopt the main body of a subzero treatment, with the thick rubber powder after the precooling with cooled with liquid nitrogen to the attritioning rubber powder low temperature-80 that requires ℃～-100 ℃, one of the thick rubber powder input of inciting somebody to action-80 ℃～-100 ℃ again has in the correct grinding of roll flute, carries out meticulous pulverizing process.Thereby formed the cold circulation of whole system, utilize the cold of liquid nitrogen fully, reclaimed a large amount of liquid nitrogen colds in the meticulous disintegrating process, saved the energy, this is a FA energy saving technique, has also realized the continuous meticulous crushing process under the cryogenic environment.Because in cold grinding retrofit process, having carried out in grinding circulates in the liquid nitrogen takes away the heat that process produces, and has guaranteed the continuous production of cold grinding retrofit.
Utilize method of liquefied nitrogen internal circulation type recovering cold energy
Produce the fine rubber powder process chart
1. laser is cut circle 2. rough lumbers 3. and is cleaned 4. broken 6. selection by winnowing in 5. that dewater
7. 10. magnetic separation 11. of magnetic separation 8. 9. selection by winnowing in small, broken bits store
I, I hybrid heat exchanger II, II hybrid heat exchanger
III, III hybrid heat exchanger IV, IV hybrid heat exchanger
One, precooling two, subzero treatment three, cold grinding
Claims (3)
1, a kind of broken worn-out doughnut prepares the method at fine rubber powder end, it is characterized in that: adopt broken thick rubber powder technology of rubber system of normal temperature and the thick rubber powder technology of the meticulous pulverizing of deep cooling, the whole piece tire is cut circle in normal temperature technology, enter coarse cutter through after normal temperature is chopped into 25mm * 25mm bulk, through cleaning, dedusting, scrubbing, again through coarse crushing, remove fabric, remove steel wire, enter in small, broken bitsly, the bulk blob of viscose becomes 20 orders～thick rubber powder of 40 purposes.In cryogenic technology, 20 orders～thick rubber powder of 40 purposes is entered the deep cooling production line, its deep cooling is carried out meticulous pulverizing after-80 ℃～-100 ℃, fine glue powder reaches 80 orders～enter heat exchange more than 120 orders, it being included-75 ℃ of low temperature fine glue powders mixes with normal temperature 20 orders～thick rubber powder of 40 orders through four times, carrying out heat exchange makes the fine glue powder temperature be elevated to 5 ℃, and the thick rubber powder temperature of normal temperature drops to-55 ℃,-55 ℃ thick rubber powder enters subzero treatment and reaches the attritioning temperature, carry out attritioning processing, become the above fine glue powder product of 80 orders～120 orders, this is a circulation.
2, method according to claim 1: it is characterized in that: in normal temperature technology, (1), the mode that adopts laser to cut circle; (2), four groups of rollers are equipped with 22 pairs of cutting knifes on the coarse cutter; (3), adopt wind-force to separate different fabric of proportion and thick rubber powder eliminating fabric wherein; (4), adopt magnetic to separate the metal steel wire of getting rid of in the rubber powder.
3, method according to claim 1: it is characterized in that: in cryogenic technology, first, with four heat of mixing switches of a cover, to contain the very fine glue powder and the heat of mixing exchange in device of normal temperature rubber powder of low temperature, remove precooling normal temperature rubber powder with the low temperature fine glue powder, second, with two pre-coolers of a cover, the low temperature nitrogen precooling again of the thick rubber powder input subzero treatment discharge of precooling temperature will do not reached, add a small amount of liquid nitrogen in the time of suitably, make temperature reach-55 ℃ of precooling requirements, the 3rd, main body with a subzero treatment, with the thick rubber powder after the precooling with liquid nitrogen deep to the attritioning rubber powder low temperature-80 that requires ℃～-100 ℃, the 4th, with a correct grinding that has roll flute, this mill can make the correct grinding continuous operation with the cold circulatory system of a cover insulation low temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001098896A CN1170663C (en) | 2000-07-12 | 2000-07-12 | Technology for producing fine rubber powder by method of liquefied nitrogen internal circulation type recovering cold energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001098896A CN1170663C (en) | 2000-07-12 | 2000-07-12 | Technology for producing fine rubber powder by method of liquefied nitrogen internal circulation type recovering cold energy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1333116A CN1333116A (en) | 2002-01-30 |
| CN1170663C true CN1170663C (en) | 2004-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB001098896A Expired - Fee Related CN1170663C (en) | 2000-07-12 | 2000-07-12 | Technology for producing fine rubber powder by method of liquefied nitrogen internal circulation type recovering cold energy |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389016C (en) * | 2003-08-27 | 2008-05-21 | 上海虹磊精细胶粉成套设备有限公司 | Full automatic flow line of normal temperature breaking grinding waste rubber article and its method |
| CN101559630B (en) * | 2009-06-01 | 2012-11-28 | 刘山 | Environment-friendly waste tire and rubber grinder |
| DE102009058938A1 (en) | 2009-12-17 | 2011-07-14 | Bochmann, Sebastian, Dr., 08321 | Form, color and / or sealant, process for producing a molding, color and / or sealant and wear layers of these materials |
| CN102267202A (en) * | 2011-07-26 | 2011-12-07 | 无锡双象橡塑机械有限公司 | Process for decomposing waste tyres into rubber blocks |
| CN102744802A (en) * | 2012-07-09 | 2012-10-24 | 东莞芳言塑胶科技有限公司 | Method for processing hot melt adhesive waste products into raw material |
| CN103831910A (en) * | 2012-11-26 | 2014-06-04 | 李启全 | Tire leftover decomposing method |
| CN105605419B (en) * | 2015-12-31 | 2018-08-07 | 杰瑞石油天然气工程有限公司 | Empty nitrogen station cold energy comprehensive reutilization system and its recoverying and utilizing method |
| CN107234748A (en) * | 2017-06-29 | 2017-10-10 | 安徽中宏橡塑有限公司 | A kind of method that normal temperature prepares junked tire fine glue powder with low-temperature phase combination crushing |
| CN107629258A (en) * | 2017-08-24 | 2018-01-26 | 中海油（福建）深冷精细胶粉有限公司 | For preparing rubber powder, its production method and the tire tread rubber material prepared therefrom of tire tread rubber material |
| CN109232971A (en) * | 2018-08-18 | 2019-01-18 | 广东志达行新材料有限公司 | A kind of reclaimed rubber recycling preparation process of antibacterial and mouldproof |
| CN115847665A (en) * | 2022-10-14 | 2023-03-28 | 上海芯密科技有限公司 | Crushing process for recovering perfluoroether rubber and perfluoroether sealing element prepared by same |
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- 2000-07-12 CN CNB001098896A patent/CN1170663C/en not_active Expired - Fee Related
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| CN1333116A (en) | 2002-01-30 |
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Owner name: ZHANG DAOSHU Free format text: FORMER OWNER: JINGYE ELECTROMECHANICAL TECHNOLOGY INST., ZHUHAI SPECIAL ECONOMIC ZONE Owner name: LING PEIXIU; LING PEIYI; LING PEIYOU; LING PEIREN Free format text: FORMER OWNER: NONE Effective date: 20030731 |
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