CN101880406B - Method for normal pressure continuous desulfurization of rubber - Google Patents
Method for normal pressure continuous desulfurization of rubber Download PDFInfo
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- CN101880406B CN101880406B CN2010102212213A CN201010221221A CN101880406B CN 101880406 B CN101880406 B CN 101880406B CN 2010102212213 A CN2010102212213 A CN 2010102212213A CN 201010221221 A CN201010221221 A CN 201010221221A CN 101880406 B CN101880406 B CN 101880406B
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- desulfurization
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention provides a method for the normal pressure continuous desulfurization of rubber, which comprises the steps of: crushing rubber, then adding softening agent and activating agent into the crushed rubber power, evenly mixing the agents with the rubber powder, and desulfurizing the evenly mixed material, wherein the desulfurization comprises the following step that: the material is continuously fed, via a fluidized bed, into a desulfurization pipeline which is equidistantly divided into five sections with each being externally heated, temperature of the five sections of the pipeline is the same, but temperature difference between the sections of the pipeline is present, the heating temperature of the sections of the pipeline in descending order is from 280 DEG C to 240 DEG C in the flowing direction of the material, the interior of the desulfurization pipeline is at normal pressure, the length of each section of the desulfurization pipeline is from 14 to 17 meters, and the flowing time of the material in the entire desulfurization pipeline is from 15 to 20 minutes. The method for the normal pressure continuous desulfurization of rubber according to the invention has the advantages of: good safety, environmental protection, energy saving, stable product performance and high efficiency.
Description
Technical field
The present invention relates to a kind of method of desulfurization, be specifically related to a kind of method of normal pressure continuous desulfurization of rubber.
Background technology
The regeneration of waste old realizes the vulcanized rubber desulfurization through chemistry, heat and oxygen and mechanical effect.In this process, the reticulated structure of vulcanized rubber is damaged, and degrades, and most of vulcanized rubber generates linear low molecular rubber hydrocarbon, and small portion becomes the molecular fragment that contains combined sulfur.
At present, the desulfurization regeneration of rubber mainly contains three kinds of process methodes, is respectively oil process, water/oil method and HTHP dynamic desulfurization.These three kinds of methods all belong to producing in pressurized vessel inside clearance formula.Because starting material are complicated and changeable, the fluctuation of its processing parameter intersects makes shoddy product quality integral body on the low side, instability.In addition, these working method corresponding production equipment pressure progressively promote, and potential safety hazard is serious, and the discharging of waste water and gas causes contaminate environment.Need open the heat power consumption that jar is lowered the temperature, charging heats up and waste water and gas is taken away makes overall energy consumption higher.
Summary of the invention
The object of the present invention is to provide a kind of safety performance excellent, the method for energy-saving and environmental protection, normal pressure continuous desulfurization of rubber that product with stable quality is good.
The present invention is achieved in that
The method of normal pressure continuous desulfurization of rubber is that rubber is pulverized, and in the rubber powder of pulverizing, mixes behind adding tenderizer and the acvator then, the material that mixes is carried out desulfurization handle, and it is characterized in that desulfurization comprises the steps:
Material is sent into the desulfurization pipeline continuously through thermopnore carry out desulfurization, the desulfurization pipeline is divided into equidistant five sections, and each section desulfurization pipeline adopts indirect heating; The temperature of every little segment pipe is identical, but has temperature contrast between the adjacent channel, according to the flow direction of material; The temperature of each segment pipe heating is 280 ℃ to 240 ℃ from high to low; The desulfurization pipe interior is a normal pressure, and every section desulfurization duct length is 14 to 17m, and material flowing time between whole desulfurization pipeline is 15 to 20min.
Scheme further is: adopt electromagnetic induction to heat.
Scheme further is: after the desulfurization pipeline comes out, through overcooling, promptly make the rubber powder after the desulfurization at material.
Scheme further is: in process of cooling, in material, spray the water that accounts for material 2 to 3% weight.
The method of normal pressure continuous desulfurization of rubber provided by the invention; Adopted the desulfurization pipeline under the normal pressure, structure of container distortion that the dynamic digester of pressing in avoiding adopting causes and the unsafe factor in the pressurized vessel use in continuous high low temperature intersects the sudden change environment; In addition in the present invention, need not add water, avoid the secondary pollution of spent process water, also save the liquid of water, the heat power consumption that gas phase becomes simultaneously, environmental protection and energy saving as working medium.In addition, the thermopnore continuously feeding is adopted in this invention, has solved the equilibrium plasticizing reaction of continuous industry manufacturing requirements and rubber grain, has avoided the gap reaction, and the product performance of production are stable.In addition, the present invention all has strict restriction for curing time and pipe temperature, in dynamic digester desulphurization reaction before, because the rising of temperature can cause the pressure in the container to increase; Increased the insecurity of container, the present invention is owing to adopt normal pressure to add thermally desulfurizing, so the temperature adjustment that can raise easily; Under temperature of the present invention, rubber grain is desulfurization easily, therefore; The also corresponding shortening of whole sweetening process reaction times is from dynamically 2 to 3h of the digester reaction needed be reduced to 15 to 20min, in addition before; Temperature can not be too high, and too high temperature can make the rubber coking, so temperature finally is controlled at 280 to 240 ℃.Material after the desulfurization of the present invention promptly makes rubber powder after overcooling, wherein in process of cooling; In material, spraying the water that accounts for material 2 to 3% weight also is an innovative point of the present invention, through spray water, can reduce temperature of charge rapidly; Enhance productivity, in addition, the weight of water is also unsuitable too high; Through spraying suitable quantity of water, can not influence the quality of rubber powder.
Embodiment
Embodiment one
The method of normal pressure continuous desulfurization of rubber is that rubber is pulverized, and in the rubber powder of pulverizing, mixes behind adding tenderizer and the acvator then, the material that mixes is carried out desulfurization handle, and desulfurization comprises the steps:
Material is sent into the desulfurization pipeline continuously through thermopnore, and the desulfurization pipeline is divided into equidistant five sections, every segment length 15m; Each section desulfurization pipeline adopts the external electromagnetic induction heating, and the temperature of every segment pipe is identical, but has temperature contrast between the pipeline; According to the flow direction of material, the first segment pipe temperature is 280 ℃, and second section is 270 ℃; The 3rd section is 260 ℃, and the 4th section is 250 ℃, and the 5th section is 240 ℃; The desulfurization pipe interior is a normal pressure, and material flowing time between whole desulfurization pipeline is 15min.After the desulfurization pipeline comes out,, and in material, spray the water account for material 2% weight at material, when temperature of charge is reduced to 60 ℃, promptly make the rubber powder after the desulfurization in the industry through overcooling.
Embodiment two
The method of normal pressure continuous desulfurization of rubber is that rubber is pulverized, and in the rubber powder of pulverizing, mixes behind adding tenderizer and the acvator then, the material that mixes is carried out desulfurization handle, and desulfurization comprises the steps:
Material is sent into the desulfurization pipeline continuously through thermopnore, and the desulfurization pipeline is divided into equidistant five sections, every segment length 17m; Each section desulfurization pipeline adopts the external electromagnetic induction heating, and the temperature of every segment pipe is identical, but has temperature contrast between the pipeline; According to the flow direction of material, the first segment pipe temperature is 280 ℃, and second section is 270 ℃; The 3rd section is 260 ℃, and the 4th section is 250 ℃, and the 5th section is 240 ℃; The desulfurization pipe interior is a normal pressure, and material flowing time between whole desulfurization pipeline is 20min.After the desulfurization pipeline comes out,, and in material, spray the water account for material 3% weight at material, when temperature of charge is reduced to 60 ℃, promptly make the rubber powder after the desulfurization in the industry through overcooling.
Claims (2)
1. the method for a normal pressure continuous desulfurization of rubber is that rubber is pulverized, and in the rubber powder of pulverizing, mixes behind adding tenderizer and the acvator then, the material that mixes is carried out desulfurization handle, and it is characterized in that desulfurization comprises the steps:
Material is sent into the desulfurization pipeline continuously through thermopnore carry out desulfurization, the desulfurization pipeline is divided into equidistant five sections, and each section desulfurization pipeline adopts indirect heating; The temperature of every little segment pipe is identical, but has temperature contrast between the adjacent channel, according to the flow direction of material; The temperature of each segment pipe heating is 280 ℃ to 240 ℃ from high to low; The desulfurization pipe interior is a normal pressure, and every section desulfurization duct length is 14 to 17m, and material flowing time between whole desulfurization pipeline is 15 to 20min;
Wherein, after the desulfurization pipeline comes out,, in process of cooling, in material, spray the water account for material 2 to 3% weight, promptly make the rubber powder after the desulfurization through overcooling at material.
2. the method for normal pressure continuous desulfurization of rubber according to claim 1 is characterized in that: each section desulfurization pipeline adopts electromagnetic induction to heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102212213A CN101880406B (en) | 2010-07-08 | 2010-07-08 | Method for normal pressure continuous desulfurization of rubber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102212213A CN101880406B (en) | 2010-07-08 | 2010-07-08 | Method for normal pressure continuous desulfurization of rubber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101880406A CN101880406A (en) | 2010-11-10 |
| CN101880406B true CN101880406B (en) | 2012-02-01 |
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| CN2010102212213A Expired - Fee Related CN101880406B (en) | 2010-07-08 | 2010-07-08 | Method for normal pressure continuous desulfurization of rubber |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212203B (en) * | 2011-05-13 | 2012-12-26 | 都江堰市新时代工贸有限公司 | Normal-pressure continuous desulfurizing method for rubber |
| CN104890165B (en) * | 2015-05-13 | 2017-04-19 | 福建省邵武市恒晖橡胶再生有限公司 | Regenerated rubber formula test method, and regenerated rubber desulphurization machine |
| CN104804215B (en) * | 2015-05-13 | 2017-10-03 | 福建省邵武市恒晖橡胶再生有限公司 | A kind of reclaimed rubber sulfur method |
| CN106009034A (en) * | 2016-07-07 | 2016-10-12 | 福建省邵武市恒晖橡胶再生有限公司 | Regenerated rubber desulphurization method |
| CN111205507B (en) * | 2020-02-27 | 2022-09-20 | 李晓武 | Production method of high-performance environment-friendly reclaimed rubber |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6590042B1 (en) * | 2000-10-06 | 2003-07-08 | Ying Tang | Recycled rubber processing and performance enhancement |
| CN101434710B (en) * | 2008-12-18 | 2010-07-14 | 泰安市金山橡胶工业有限公司 | Automatic rubber powder plasticizing process and apparatus thereof |
| CN201362673Y (en) * | 2009-01-16 | 2009-12-16 | 杨剑平 | Regeneration reaction vessel used for recycling waste rubber |
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Granted publication date: 20120201 Termination date: 20200708 |