CN103626719A - Method of washing rubber vulcanization accelerator CBS by virtue of sub concentration-process - Google Patents
Method of washing rubber vulcanization accelerator CBS by virtue of sub concentration-process Download PDFInfo
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- CN103626719A CN103626719A CN201310417444.0A CN201310417444A CN103626719A CN 103626719 A CN103626719 A CN 103626719A CN 201310417444 A CN201310417444 A CN 201310417444A CN 103626719 A CN103626719 A CN 103626719A
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- mother liquor
- cbs
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/60—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings condensed with carbocyclic rings or ring systems
- C07D277/62—Benzothiazoles
- C07D277/68—Benzothiazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
- C07D277/70—Sulfur atoms
- C07D277/76—Sulfur atoms attached to a second hetero atom
- C07D277/80—Sulfur atoms attached to a second hetero atom to a nitrogen atom
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a method of washing rubber vulcanization accelerator CBS by virtue of a sub concentration-process in centrifuging and dehydrating processes of a vulcanized rubber vulcanization accelerator CBS semi-finished product. According to the technical scheme, washing process steps of the oxidized semi-finished product are as follows: a first step of separating high-concentration mother liquor from a semi-finished CBS material through a centrifugal machine, and conveying the mother liquor into a high-concentration mother liquor tank; a second step of cleaning the CBS material separated in the first step by using low-concentration mother liquor until the PH of the mother liquor is 9-10; a third step of continuously cleaning the CBS material by using process water until the PH of the mother liquor is 7, and pouring the mother liquor sieved out in the step into a low-concentration mother liquor storage tank for use in the next batch; a fourth step of conveying the washed semi-finished product into a finished product process for drying and pelletizing to obtain the product CBS. The beneficial effects are as follows: the CBS semi-finished product material is washed by carrying out high-low distinguishing on the concentration of the mother liquor, the sewage treatment cost is relieved, steam dosage is reduced, the environment is improved, and only high-concentration mother liquor enters a distillation kettle for being distilled and recycled.
Description
Technical field
The present invention relates to minute concentration method washing rubber vulcanizing accelerator CBS in half-finished centrifugal, the dehydration of vulcanized rubber vulcanization accelerator CBS, belong to field of fine chemical.
Background technology
Rubber vulcanizing accelerator CBS (claiming again CZ), is a kind of conventional thiofide, and sulfenamide exceeds the speed limit in genus, chemical name is N-cyclohexyl-2-[4-morpholinodithio sulphenamide, be the delayed action accelerator that a kind of height is active, scorching quality is good, process safety, curing time is short, be applicable to various rubber, variable color is slight, no blooming, tensile strength, surely to stretch ability all better, mainly for the manufacture of industrial rubber articles such as tire, sebific duct, rubber overshoes, electric wires; Current rubber industry and vulcanization accelerator industry are all subject to the puzzlement of carinogenicity nitrosamine, NOBS and other secondary amine structural promotors can produce the nitrosamine that has carinogenicity between curing time, the sulfenamide vulcanization accelerator of the primary amine structures such as accelerator CBS is non-carcinogenesis problem, thereby has been subject to generally attention and the research and development of industry.
According to rubber ingredients waste water characteristic: waste water saltiness is higher, the theoretical saltiness 9-10% of mother liquor; The COD of waste water is mainly part hexahydroaniline, unreacted 2 Mercaptobenzothiazole (MBT) (2-mercaptobenzothiazole), the secondary pollutent of 2 Mercaptobenzothiazole (MBT), by product DM and not clear by product resin etc.Rubber ingredients waste water generally all contains higher salinity, substantially belong to can not be biochemical waste water.This waste water difficulty on processing is larger, and Pollutant levels are high, toxicity is large, and sodium chloride content is high, sulfide content is high, organic amine content is higher, belongs to the waste water of highly difficult processing, so in order to reduce discharge of wastewater, must control from source the wash water consumption of material.
Summary of the invention
The object of the invention is to solve and in rubber vulcanizing accelerator CBS washing process, produce the problem that wastewater flow rate is large, alleviate cost of sewage disposal, be the embodiment of the policy of response national energy-saving reduction of discharging, for auxiliary industry provides minute concentration method of a new operational path, wash rubber vulcanizing accelerator CBS.
Technical scheme: to the work in-process washing process step after oxidizing reaction:
The first step work in-process CBS material is isolated high density mother liquor through whizzer, and this mother liquor is transported in high density mother liquor tank;
The CBS material of second step after the first step separation cleans with lower concentration mother liquor, until mother liquor PH=9-10;
Process water continues washing CBS material for the 3rd step, until mother liquor PH=7, the mother liquor that this step is sifted out is poured into and in lower concentration mother liquor holding tank, got a batch use ready;
The work in-process that the 4th step completes washing, transmission finished product operation is dried, granulation obtains products C BS.
Beneficial effect: CBS semi-product material is washed by mother liquid concentration being carried out to height differentiation, alleviate cost of sewage disposal, reduce the demand of steam consumption, minimizing surface water, improved company's benefit, improve environment, only had high density mother liquor to enter still kettle Distillation recovery.
Embodiment
The work in-process washing process step of the present embodiment after to oxidizing reaction:
The first step work in-process CBS material is isolated high density mother liquor through whizzer, and this mother liquor is transported in high density mother liquor tank;
The CBS material of second step after the first step separation cleans with lower concentration mother liquor, until mother liquor PH=9-10;
Process water continues washing CBS material for the 3rd step, until mother liquor PH=7, the mother liquor that this step is sifted out is poured into and in lower concentration mother liquor holding tank, got a batch use ready;
The work in-process that the 4th step completes washing, transmission finished product operation is dried, granulation obtains products C BS;
After this technique, the detected result of products C BS is as follows:
Claims (1)
1. minute concentration method washing rubber vulcanizing accelerator CBS, is characterized in that: to the work in-process washing process step after oxidizing reaction:
The first step work in-process CBS material is isolated high density mother liquor through whizzer, and this mother liquor is transported in high density mother liquor tank;
The CBS material of second step after the first step separation cleans with lower concentration mother liquor, until mother liquor PH=9-10;
Process water continues washing CBS material for the 3rd step, until mother liquor PH=7, the mother liquor that this step is sifted out is poured into and in lower concentration mother liquor holding tank, got a batch use ready;
The work in-process that the 4th step completes washing, transmission finished product operation is dried, granulation obtains products C BS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310417444.0A CN103626719A (en) | 2013-09-14 | 2013-09-14 | Method of washing rubber vulcanization accelerator CBS by virtue of sub concentration-process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310417444.0A CN103626719A (en) | 2013-09-14 | 2013-09-14 | Method of washing rubber vulcanization accelerator CBS by virtue of sub concentration-process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103626719A true CN103626719A (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310417444.0A Pending CN103626719A (en) | 2013-09-14 | 2013-09-14 | Method of washing rubber vulcanization accelerator CBS by virtue of sub concentration-process |
Country Status (1)
| Country | Link |
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| CN (1) | CN103626719A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114957161A (en) * | 2022-07-19 | 2022-08-30 | 山东戴瑞克新材料有限公司 | Multistage washing separation method of rubber vulcanization accelerator CBS and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168531A (en) * | 2007-11-27 | 2008-04-30 | 南京大学 | Method for synthesizing rubber accelerator DZ |
| CN101343256A (en) * | 2008-08-26 | 2009-01-14 | 山东省单县化工有限公司 | Preparation method for rubber accelerator CBS |
| CN102863402A (en) * | 2012-09-25 | 2013-01-09 | 科迈化工股份有限公司 | Preparation method of accelerator CBS |
-
2013
- 2013-09-14 CN CN201310417444.0A patent/CN103626719A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168531A (en) * | 2007-11-27 | 2008-04-30 | 南京大学 | Method for synthesizing rubber accelerator DZ |
| CN101343256A (en) * | 2008-08-26 | 2009-01-14 | 山东省单县化工有限公司 | Preparation method for rubber accelerator CBS |
| CN102863402A (en) * | 2012-09-25 | 2013-01-09 | 科迈化工股份有限公司 | Preparation method of accelerator CBS |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114957161A (en) * | 2022-07-19 | 2022-08-30 | 山东戴瑞克新材料有限公司 | Multistage washing separation method of rubber vulcanization accelerator CBS and application thereof |
| CN114957161B (en) * | 2022-07-19 | 2024-03-01 | 山东戴瑞克新材料有限公司 | Multistage washing separation method of rubber vulcanization accelerator CBS and application thereof |
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Application publication date: 20140312 |