CN104672489A - Waste rubber desulfurization technology - Google Patents
Waste rubber desulfurization technology Download PDFInfo
- Publication number
- CN104672489A CN104672489A CN201310621048.XA CN201310621048A CN104672489A CN 104672489 A CN104672489 A CN 104672489A CN 201310621048 A CN201310621048 A CN 201310621048A CN 104672489 A CN104672489 A CN 104672489A
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- CN
- China
- Prior art keywords
- rubber
- desulfurization
- waste old
- normal temperature
- sulfur removal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
Abstract
The invention belongs to the technical field of rubber desulfurization and particularly relates to a waste rubber desulfurization technology which comprises the following steps: cleaning waste rubber, conducting primary crushing on the rubber to 20-30 meshes at normal temperature, conducting secondary crushing on the rubber to 80-100 meshes at minus 150 to minus 130 DEG C, and standing the crushed rubber to normal temperature; uniformly mixing the crushed rubber, a desulfurizing agent, a softening agent and an active agent, placing the mixture in an iron pan, feeding the iron pan into a desulfurization tank, and directly heating the mixture with steam, wherein the steam pressure is 0.8-1.0MPa and the desulfurization time is 9-12h; and conducting thin-passing extrusion on a desulfurization product by a drum refiner to make the desulfurization product into reclaimed rubber. The reclaimed rubber prepared according to the technology has favorable physical and mechanical properties and is similar to crude rubber. The technology has simple processing steps, is low in energy consumption and realizes efficient utilization of waste rubber.
Description
Technical field
The invention belongs to devulcanization of rubber technical field, particularly relate to a kind of sulfur removal technology of waste old.
Background technology
The method of Waste rubber desulfurization regeneration be divided into physics with two large classes of chemistry, at present more than existing more than 10 kinds.With the reclaimed rubber of produced in conventional processes, because rubber powder is when reacting with heat, oxygen and regenerator, except cut-out sulfide linkage is cross-linked except site, also cause oxidation and the part thermo-cracking of rubber backbone key.So the object of that " do not destroy rubber backbone and just cut off sulfide linkage and be cross-linked site, namely dredging, two dredge and polysulfide associative keys " desired by regeneration techniques can not be realized completely.Its reclaimed rubber moulding also often based on the decline of molecular weight rubber and oil plant, regenerator and the bating effect produced.Just because of this, the physical and mechanical properties of this reclaimed rubber must significantly decline than new rubber.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, provide a kind of and accelerate desulfurization, improve the sulfur removal technology of the waste old of reclaimed rubber performance.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of sulfur removal technology of waste old, comprises the following steps:
(1), after waste old being cleaned up, make it under normal temperature environment, carry out first level flour and be broken to 20 ~ 30 orders, then under-150 ~-130 DEG C of environment, carry out two grade pulverization to 80 ~ 100 orders, the rubber of pulverizing is placed into normal temperature;
(2) crushing rubber step (1) obtained and sweetening agent, tenderizer, promoting agent are by weight being 1:(0.5 ~ 0.8): (0.2 ~ 0.3): (0.1 ~ 0.3) mixes, put into iron pan, send in horizontal digester, with direct steam heating, vapor pressure is 0.8 ~ 1.0MPa, and desulfurization time is 9 ~ 12h;
(3) the desulfurization product cylinder refiner thin-pass compressing tablet of step (2) is made reclaimed rubber.
Wherein, described sweetening agent is diphenyl disulfide or ferric oxide;
Described tenderizer is naphthenic or epoxy compounds;
Described promoting agent is zinc oxide.
The invention has the beneficial effects as follows: the reclaimed rubber physical and mechanical properties that the present invention obtains is good, close with virgin rubber; Present invention process step is simple, consumes energy low, makes waste old efficiency utilization.
Embodiment
Be described principle of the present invention and feature below, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
A sulfur removal technology for waste old, comprises the following steps:
(1), after waste old being cleaned up, make it under normal temperature environment, carry out first level flour and be broken to 20 orders, then under-150 DEG C of environment, carry out two grade pulverization to 80 order, the rubber of pulverizing is placed into normal temperature;
(2) crushing rubber step (1) obtained mixes by weight for 1:0.5:0.2:0.1 with sweetening agent, tenderizer, promoting agent, put into iron pan, send in horizontal digester, with direct steam heating, vapor pressure is 0.8MPa, and desulfurization time is 9h;
(3) the desulfurization product cylinder refiner thin-pass compressing tablet of step (2) is made reclaimed rubber.
Wherein, described sweetening agent is ferric oxide;
Described tenderizer is epoxy compounds;
Described promoting agent is zinc oxide.
Embodiment 2
A sulfur removal technology for waste old, comprises the following steps:
(1), after waste old being cleaned up, make it under normal temperature environment, carry out first level flour and be broken to 25 orders, then under-140 DEG C of environment, carry out two grade pulverization to 90 order, the rubber of pulverizing is placed into normal temperature;
(2) crushing rubber step (1) obtained mixes by weight for 1:0.6:0.2:0.2 with sweetening agent, tenderizer, promoting agent, put into iron pan, send in horizontal digester, with direct steam heating, vapor pressure is 0.9MPa, and desulfurization time is 10h;
(3) the desulfurization product cylinder refiner thin-pass compressing tablet of step (2) is made reclaimed rubber.
Wherein, described sweetening agent is diphenyl disulfide;
Described tenderizer is naphthenic compounds;
Described promoting agent is zinc oxide.
Embodiment 3
A sulfur removal technology for waste old, comprises the following steps:
(1), after waste old being cleaned up, make it under normal temperature environment, carry out first level flour and be broken to 30 orders, then under-130 DEG C of environment, carry out two grade pulverization to 100 order, the rubber of pulverizing is placed into normal temperature;
(2) crushing rubber step (1) obtained mixes by weight for 1:0.8:0.3:0.3 with sweetening agent, tenderizer, promoting agent, put into iron pan, send in horizontal digester, with direct steam heating, vapor pressure is 1.0MPa, and desulfurization time is 12h;
(3) the desulfurization product cylinder refiner thin-pass compressing tablet of step (2) is made reclaimed rubber.
Wherein, described sweetening agent is ferric oxide;
Described tenderizer is naphthenic compounds;
Described promoting agent is zinc oxide.
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 which point, above-mentioned embodiment of the present invention all can only be thought explanation of the present invention and can not limit the present invention, claims indicate scope of the present invention, and scope of the present invention is not pointed out in above-mentioned explanation, therefore, any change in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.
Claims (4)
1. a sulfur removal technology for waste old, is characterized in that comprising the following steps:
(1), after waste old being cleaned up, make it under normal temperature environment, carry out first level flour and be broken to 20 ~ 30 orders, then under-150 ~-130 DEG C of environment, carry out two grade pulverization to 80 ~ 100 orders, the rubber of pulverizing is placed into normal temperature;
(2) crushing rubber step (1) obtained and sweetening agent, tenderizer, promoting agent are by weight being 1:(0.5 ~ 0.8): (0.2 ~ 0.3): (0.1 ~ 0.3) mixes, put into iron pan, send in horizontal digester, with direct steam heating, vapor pressure is 0.8 ~ 1.0MPa, and desulfurization time is 9 ~ 12h;
(3) the desulfurization product cylinder refiner thin-pass compressing tablet of step (2) is made reclaimed rubber.
2. the sulfur removal technology of a kind of waste old according to claim 1, is characterized in that described sweetening agent is diphenyl disulfide or ferric oxide.
3. the sulfur removal technology of a kind of waste old according to claim 1, is characterized in that described tenderizer is naphthenic or epoxy compounds.
4. the sulfur removal technology of a kind of waste old according to claim 1, is characterized in that described promoting agent is zinc oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310621048.XA CN104672489A (en) | 2013-11-29 | 2013-11-29 | Waste rubber desulfurization technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310621048.XA CN104672489A (en) | 2013-11-29 | 2013-11-29 | Waste rubber desulfurization technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104672489A true CN104672489A (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310621048.XA Pending CN104672489A (en) | 2013-11-29 | 2013-11-29 | Waste rubber desulfurization technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN104672489A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106009726A (en) * | 2016-06-20 | 2016-10-12 | 许昌金欧特沥青股份有限公司 | Asphalt modified with odorless rubber powder easy to melt |
| CN106009725A (en) * | 2016-06-20 | 2016-10-12 | 许昌金欧特沥青股份有限公司 | Odorless waste tire rubber powder modifying agent easy to melt |
| CN107868274A (en) * | 2017-12-25 | 2018-04-03 | 福建省邵武市恒晖橡胶再生有限公司 | A kind of preparation method of reclaimed rubber |
| CN109111670A (en) * | 2018-08-01 | 2019-01-01 | 扬中市橡胶塑料厂有限公司 | A kind of regeneration perfluoroelastomers and its processing technology |
| CN114316358A (en) * | 2021-12-29 | 2022-04-12 | 江苏睿博环保设备有限公司 | Green regeneration method of waste rubber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190812A (en) * | 2010-03-06 | 2011-09-21 | 徐州工业职业技术学院 | Preparation method for environmental-friendly reclaimed rubber |
| CN102975310A (en) * | 2012-11-14 | 2013-03-20 | 上海华亿通实业有限公司 | Waste rubber particle ultrafine grinding production method |
| CN103044735A (en) * | 2012-12-06 | 2013-04-17 | 开平市康汇橡胶制品有限公司 | Method for producing regenerated rubber |
-
2013
- 2013-11-29 CN CN201310621048.XA patent/CN104672489A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190812A (en) * | 2010-03-06 | 2011-09-21 | 徐州工业职业技术学院 | Preparation method for environmental-friendly reclaimed rubber |
| CN102975310A (en) * | 2012-11-14 | 2013-03-20 | 上海华亿通实业有限公司 | Waste rubber particle ultrafine grinding production method |
| CN103044735A (en) * | 2012-12-06 | 2013-04-17 | 开平市康汇橡胶制品有限公司 | Method for producing regenerated rubber |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106009726A (en) * | 2016-06-20 | 2016-10-12 | 许昌金欧特沥青股份有限公司 | Asphalt modified with odorless rubber powder easy to melt |
| CN106009725A (en) * | 2016-06-20 | 2016-10-12 | 许昌金欧特沥青股份有限公司 | Odorless waste tire rubber powder modifying agent easy to melt |
| CN107868274A (en) * | 2017-12-25 | 2018-04-03 | 福建省邵武市恒晖橡胶再生有限公司 | A kind of preparation method of reclaimed rubber |
| CN109111670A (en) * | 2018-08-01 | 2019-01-01 | 扬中市橡胶塑料厂有限公司 | A kind of regeneration perfluoroelastomers and its processing technology |
| CN114316358A (en) * | 2021-12-29 | 2022-04-12 | 江苏睿博环保设备有限公司 | Green regeneration method of waste rubber |
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Application publication date: 20150603 |