CN108517135A - A kind of method that waste tire pyrolysis prepares carbon black - Google Patents
A kind of method that waste tire pyrolysis prepares carbon black Download PDFInfo
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- CN108517135A CN108517135A CN201810375885.1A CN201810375885A CN108517135A CN 108517135 A CN108517135 A CN 108517135A CN 201810375885 A CN201810375885 A CN 201810375885A CN 108517135 A CN108517135 A CN 108517135A
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- China
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- carbon black
- pyrolysis
- tire
- side wall
- tyre surface
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/482—Preparation from used rubber products, e.g. tyres
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to waste tire application technology as the second resource fields, are related to a kind of method that waste tire pyrolysis prepares carbon black.Damaged tire removes steel bead wire through ring cutting machine first, then it is divided into tyre surface and sidewall two parts through automatic cutting device, tread portion enters pyrolysis system after crusher in crushing, and the carbon black after pyrolysis enters magnetic separation process, realize that the separation of carbon black and tyre surface steel wire, pyrolytic carbon black are utilized；Side wall portion enters pyrolysis system after crusher in crushing, and since side wall portion is free of steel wire, the carbon black after pyrolysis is directly utilized without magnetic separation.The present invention detaches carbon black from source, avoid the carbon black quality decline problem as caused by the doping of variety classes carbon black, obtain two kinds of relatively simple pyrolytic carbon black products, Sales Channel is widened, the invented technology simple and flexible simultaneously, no extra cost input, solves the problems, such as that the prior art is less economical.
Description
Technical field
The invention belongs to waste tire application technology as the second resource field, it is related to the side that a kind of waste tire pyrolysis prepares carbon black
Method.
Background technology
Pyrolytic carbon black is the important products of waste tire pyrolysis, mainly by the carbon black that is added in tire production process and inorganic
Due to the deposits of coke composition that secondary response is formed in filler and pyrolytic process, yield up to 30%~40%, answer by market
The economic well-being of workers and staff of pyrolytic process with Determination of Value.Rubber grade carbon black consumption accounts for the 90% of carbon black total amount, and wherein tire is with accounting for
67.5%.Waste tyre pyrolytic prepare carbon black substitute industrial carbon black reaction for rubber industry be current most interesting application it
One.
The Nomenclature Composition and Structure of Complexes of waste tyre pyrolytic carbon black and the industrial carbon black of addition are totally similar, but its performance is practical less than work
Industry carbon black, market is bad using income, and reason has three：One, carbon black product are added due to the use of desired different kinds of tyre different parts
Kind is different, therefore pyrolytic carbon black is really the mixture of a variety of carbon blacks；Two, the precipitation of tire ash component；Three, pyrolytic process produces
Raw carbonaceous sediment.The main method for improving pyrolytic carbon black quality at present is divided to two classes：The result control being modified for pyrolytic carbon black
System and for pyrolytic process process control.
107379322 A of Chinese patent CN disclose a kind of tire carbon black circulation utilization method (2017.11.24), will give up
Old tire is crushed to 25mm*25mm sizes by pretreatment, the pyrolysis tower being sent under 500 DEG C of -700 DEG C of temperature and tiny structure environment
It is pyrolyzed, pyrolytic carbon black is washed to PH >=5 after 2h is blended with nitric acid under the conditions of 343K, filtrate is dry at a temperature of 378K
The mixed solution of stearic acid and acetone is added after to constant weight and stands 24 hours, be granulated after finally drying to constant weight or directly wrap
Dress, carbon black can 100% substitute N550 and N234 carbon blacks be used for new Tire production.This modification not only increases complex process
Property, equipment and the cost input of raw material are increased, the processing cost of additional waste water, waste residue is also will produce, economy is overall
It is poor, it is difficult to be promoted.
107556785 A of Chinese patent CN disclose a kind of preparation method of regeneration hard carbon black used for rubber reinforcement
(2018.01.09), using damaged tire as raw material, in the reduction furnace of oxygen free condition after heated by microwave removing gaseous products, microwave
Heating is passed through the dielectric gas that temperature is 350~700 DEG C into reduction furnace simultaneously, and the gaseous products of heated by microwave removing are with Jie
Reduction furnace is discharged in matter gas, and the avoidable tar pollution object of condition of high temperature and carrier gas impacts carbon black particle, and rubber is made to pass through
The solid carbon black particle structure that Pintsch process obtains is not destroyed, to keep the reinforcing rubber performance of solid-state carbon black.Although should
Method avoids follow-up additional input, but since the basic data of lack of materials dielectric property leads to the business of microwave-heating
Change application to be obstructed, while this method lacks generality, and not applicable conventional pyrolytic mode.
Invention content
The object of the present invention is to provide a kind of methods that waste tire pyrolysis prepares carbon black, will be waste and old by pre-processing link
Tire is divided into tyre surface and sidewall two parts, individually carries out pyrolysis processing.On the one hand different types of carbon black can be carried out from source
It distinguishes, influencing each other between elimination heterogeneity carbon black；On the other hand, according to tyre surface pyrolytic carbon black and sidewall pyrolytic carbon black
Different best applications approach may be selected in heterogeneity.This method not only effectively increases pyrolytic carbon black added value, but also technique
Simply, no extra cost input, solves the problems, such as that prior art business promotion is limited.
Technical scheme of the present invention：
A kind of method that waste tire pyrolysis prepares carbon black, steps are as follows：
Damaged tire removes steel bead wire through ring cutting machine first, is then divided into tyre surface and sidewall two through automatic cutting device cutting
Part, tread portion enter pyrolysis system after crusher in crushing, and pyrolysis obtains carbon black, and the carbon black after pyrolysis enters magnetic separation work
Sequence realizes the separation of carbon black and tyre surface steel wire；Side wall portion enters pyrolysis system after crusher in crushing, and pyrolysis obtains carbon black,
Since side wall portion is free of steel wire, the carbon black after pyrolysis is not necessarily to magnetic separation, directly utilizes；
The tread portion is the part that tire is contacted with ground, and thickness is tire longitudinal direction depth, and tread portion contains
Whole steel wire ingredients of tire；
The side wall portion is that tire removes the remainder after tyre surface；
The pyrolysis system, 400 DEG C~600 DEG C, 5 DEG C/min-20 DEG C/min of heating rate of pyrolysis temperature, residence time
30min-2h, carrier gas type are N2, vapor or the two mixed gas, flow rate of carrier gas 50ml/min-200ml/min.
The equipment that the magnetic separation process uses is magnetic separator.
Beneficial effects of the present invention：
(1) present invention can be achieved to improve the purpose of carbon black mass and income.Because in tire production tread portion and
The carbon black types of side wall portion addition are different, therefore tyre surface and sidewall are separated individually pyrolysis and can be divided carbon black from source
From, obtain two kinds of relatively simple pyrolytic carbon black products, not only increase the quality of carbon black at the same increase pyrolytic carbon black sale
Channel.
(2) good economy performance of the present invention.Tread portion contains whole steel wires and side wall portion is free of steel wire, not only so that waste and old
The recycling of bead wire is more concentrated, while when handling side wall portion, can save the part energy consumption of broken process and whole magnetic separation
The energy consumption of process；Same set of production line can be used in tread portion and side wall portion, and without additional input, utilization rate of equipment and installations is high
(3) flexibility of the present invention is strong.It on the one hand can be according to the different adjustment tyre surfaces and sidewall heat of market carbon black products demand
The production cycle of carbon black is solved, production efficiency is improved；The another aspect present invention can be with any waste tire treatment technology (heat treatment skill
Art, crushing technology etc.) it is used in conjunction, reach corresponding production purpose.
(4) business promotion possibility of the present invention is big.The upgrading problem of pyrolytic carbon black is real waste tire processing enterprise
Bottleneck problem, it would be highly desirable to it solves, and the prior art is generally less economical, actual motion is difficult, which can effectively solve the above lance
Shield has very high business promotion ability.
Specific implementation mode
Describe the specific implementation mode of the present invention in detail below in conjunction with technical solution.
A kind of method that waste tire pyrolysis prepares carbon black, damaged tire remove steel bead wire through ring cutting machine first, by certainly
Dynamic cutter device is divided into tyre surface and sidewall two parts.Tread portion enters pyrolysis system after crusher in crushing, and pyrolysis installation is
Fixed bed, 500 DEG C of pyrolysis temperature, 10 DEG C/min of heating rate, residence time：30min, carrier gas type：N2, flow rate of carrier gas：
100ml/min.Carbon black after pyrolysis realizes that the separation of carbon black and tyre surface steel wire, pyrolytic carbon black are utilized through magnetic separator；Sidewall
Part enters pyrolysis system after crusher in crushing, and pyrolysis installation is fixed bed, 500 DEG C of pyrolysis temperature, and 10 DEG C of heating rate/
Min, residence time：30min, carrier gas type：N2, flow rate of carrier gas：100ml/min.Carbon black after pyrolysis directly utilizes.
After testing, obtained performance indicator is shown in Table 1 to obtained tyre surface pyrolytic carbon black and sidewall pyrolytic carbon black.
The property of 1 tyre surface pyrolytic carbon black of table and sidewall pyrolytic carbon black compares
Sidewall pyrolytic carbon black can be used as that hard carbon black is anticaustic in tire production process, and property is better than commercial carbon blacks N660.
And tyre surface carbon black should not be used as hard carbon black since content of ashes is excessively high, it is contemplated that it is low-quality carbon filler to use reuse, or because of it
Higher specific surface area is considered as the possibility of adsorbent.
The above is that the present invention prepares one of embodiment of carbon black, it is noted that for the common skill of this field
It, can be to subsequent processing side under conditions of not departing from waste tire tread portion and side wall portion and separately handling for art personnel
Improvement or change are made in formula or pyrolytic carbon black application, these also should be regarded as the scope of the present invention.
Claims (2)
1. a kind of method that waste tire pyrolysis prepares carbon black, which is characterized in that steps are as follows：
Damaged tire removes steel bead wire through ring cutting machine first, is then divided into tyre surface and two, sidewall through automatic cutting device cutting
Point, tread portion enters pyrolysis system after crusher in crushing, and pyrolysis obtains carbon black, and the carbon black after pyrolysis enters magnetic separation process,
Realize the separation of carbon black and tyre surface steel wire；Side wall portion enters pyrolysis system after crusher in crushing, and pyrolysis obtains carbon black, due to
Side wall portion is free of steel wire, and the carbon black after pyrolysis is not necessarily to magnetic separation, directly utilizes；
The tread portion is the part that tire is contacted with ground, and thickness is tire longitudinal direction depth, and tread portion contains tire
Whole steel wire ingredients；
The side wall portion is that tire removes the remainder after tyre surface；
The pyrolysis system, 400 DEG C~600 DEG C, 5 DEG C/min-20 DEG C/min of heating rate of pyrolysis temperature, residence time
30min-2h, carrier gas type are N2, vapor or the two mixed gas, flow rate of carrier gas 50ml/min-200ml/min.
2. the method that a kind of waste tire pyrolysis according to claim 1 prepares carbon black, which is characterized in that the magnetic separation
The equipment that process uses is magnetic separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810375885.1A CN108517135A (en) | 2018-04-19 | 2018-04-19 | A kind of method that waste tire pyrolysis prepares carbon black |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810375885.1A CN108517135A (en) | 2018-04-19 | 2018-04-19 | A kind of method that waste tire pyrolysis prepares carbon black |
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| Publication Number | Publication Date |
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| CN108517135A true CN108517135A (en) | 2018-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810375885.1A Pending CN108517135A (en) | 2018-04-19 | 2018-04-19 | A kind of method that waste tire pyrolysis prepares carbon black |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341843A (en) * | 2020-11-09 | 2021-02-09 | 江西省永固新能源炭黑有限公司 | Micro-oxidation activation method for waste tire pyrolytic carbon black |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104723476A (en) * | 2013-12-23 | 2015-06-24 | 宁夏恒源晟达橡胶制品有限公司 | Method for producing rubber powder by utilization of waste tires |
| CN107236568A (en) * | 2016-03-29 | 2017-10-10 | 河南沐桐环保产业有限公司 | A kind of junked tire low-temperature negative-pressure continuous cracking device and method |
-
2018
- 2018-04-19 CN CN201810375885.1A patent/CN108517135A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104723476A (en) * | 2013-12-23 | 2015-06-24 | 宁夏恒源晟达橡胶制品有限公司 | Method for producing rubber powder by utilization of waste tires |
| CN107236568A (en) * | 2016-03-29 | 2017-10-10 | 河南沐桐环保产业有限公司 | A kind of junked tire low-temperature negative-pressure continuous cracking device and method |
Non-Patent Citations (3)
| Title |
|---|
| MOHAMMED KYARI,ET AL.: "Characterization of Oils, Gases, and Char in Relation to the Pyrolysis of Different Brands of Scrap Automotive Tires", 《ENERGY & FUELS》 * |
| R. MURILLO，ET AL.: "The application of thermal processes to valorise waste tyre", 《FUEL PROCESSING TECHNOLOGY》 * |
| 闫大海: "废轮胎回转窑中试热解产物应用及热解机理和动力学模型研究", 《工程科技I辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341843A (en) * | 2020-11-09 | 2021-02-09 | 江西省永固新能源炭黑有限公司 | Micro-oxidation activation method for waste tire pyrolytic carbon black |
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Application publication date: 20180911 |