CN104445086B - The separation method of insoluble sulfur - Google Patents
The separation method of insoluble sulfur Download PDFInfo
- Publication number
- CN104445086B CN104445086B CN201410078593.3A CN201410078593A CN104445086B CN 104445086 B CN104445086 B CN 104445086B CN 201410078593 A CN201410078593 A CN 201410078593A CN 104445086 B CN104445086 B CN 104445086B
- Authority
- CN
- China
- Prior art keywords
- insoluble sulfur
- sulfur
- separation
- insoluble
- carbon bisulfide
- Prior art date
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/12—Insoluble sulfur (mu-sulfur)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/0216—Solidification or cooling of liquid sulfur
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Abstract
The present invention provides the separation method of insoluble sulfur, and the insoluble sulfur serosity separation/refine produced from the quickly cooling method being cold-producing medium with Carbon bisulfide goes out the highly purified insoluble sulfur that can be used as vulcanizing agent at Rubber Industry.Separation/the method for refining of the insoluble sulfur according to the present invention, Carbon bisulfide cold-producing medium, dissolubility sulfur etc. is removed such that it is able to produce the highly purified insoluble sulfur that can be used as vulcanizing agent at Rubber Industry from the insoluble sulfur serosity passed through so that the quickly cooling method that Carbon bisulfide is cold-producing medium manufactures.Further, the separation/method of refining according to the present invention, it is possible to the cold-producing medium of recycling high price such that it is able to save manufacturing cost, it is achieved the stabilisation of manufacturing environment.The insoluble sulfur produced according to the separation/method of refining of the present invention is high-quality insoluble sulfur, insoluble sulfur content in its total sulfur is more than 90%, sieve residual is below 1.5%, HTS is more than 71%, particle diameter is 5～30 μm, therefore, can be used as vulcanizing agent when Rubber Industry, especially manufacture tire.
Description
Technical field
The present invention relates to the separation/method of refining of insoluble sulfur.In further detail, the present invention relates to the suspension (serosity) containing insoluble sulfur obtained from the process being made insoluble sulfur by the quickly cooling legal system using Carbon bisulfide as cold-producing medium and isolate insoluble sulfur the method carrying out refine.
Background technology
Insoluble sulfur (insolublesulfur) refers to the sulfur insoluble in Carbon bisulfide (CS2), and, it is also known as macromolecule sulfur (polymericsulfur).Generally, the sulfur (insoluble sulfur) of this state is for be made up of thousands of sulfur atoms, and molecular weight is more than 100,000 and macromolecule that particle diameter is 5 μm～30 μm.Insoluble sulfur is noncrystal, its from common crystal shape, the sulfur that is dissolved in Carbon bisulfide different.
The manufacture method of common insoluble sulfur be Molten sulphur (S8) is heated and prepares sulfur steam after, using Carbon bisulfide as cold-producing medium, sulfur steam is cooled down rapidly, thus forming macromolecule (-[S] n-) sulfur.
Insoluble sulfur is mainly used as the cross-linking agent (vulcanizing agent) in rubber composition.
Dissolubility sulfur can carry out the basic cross coupled (crosslinking) for manufacturing rubber composition, but, owing to comprising dissolubility sulfur in rubber composition, its processed becomes difficulty, causes that defect occurs in made rubber.Modal two problems brought due to use dissolubility sulfur are " frosting (bloom) " and " stacking bin cure (binscorch) ".Sulfur frosting is the crystallization of the sulfur in rubber article.This is to occur owing to sulfur moves to surface from the inside of rubber.Because sulfur is rendered as dissolubility inside the rubber of mixing (masticating) temperature, so producing above-mentioned phenomenon.When cooling down this mixture after blending, dissolubility declines, and forms supersaturation solid solution.Cooling mixture, dissolubility declines, then sulfur starts out from solid solution, moves to the surface of rubber and crystallization.Such bloom is serious problem.This is because the natural viscosity of the rubber destroyed in the area being affected by.When assembling multilayer rubber to manufacture tire, belt, pipe etc., due to sulfur frosting, hinder the natural combination between adjacent layer, thus producing the defects such as bubble.
On the contrary, when using insoluble sulfur as cross-linking agent, bloom phenomenon will not be produced.In blend step, insoluble sulfur is uniformly distributed in whole rubber composition, will not enter in the solution in rubber composition.Insoluble sulfur remains with dispersity, does not have concentration change, and sulfur will not move.Only when goods finally vulcanize insoluble sulfur be just reduced to dissolubility state laggard enter in solution.Vulcanization reaction can occur simultaneously, and sulfur becomes a part for rubber polymer product.Thus, sulfur carries out chemical combination, will not produce frosting phenomenon during cooling rubber polymer.
Another the serious problem brought because using dissolubility sulfur in rubber composition is to stack bin cure problem.Produce when storing after being sufficiently mixed the rubber composition that (namely, mixing, pulverizing etc.) are uncured to stack bin cure phenomenon.Uncured compositions has temperature sensitivity, when storage temperature does not control when suitable temperature to start too early to solidify (, cross-link).This phenomenon is referred to as " stacking bin cure ".
Can suppress when using insoluble sulfur to stack bin cure.Only utilize insoluble sulfur when temperature reaches to solidify (sulfuration) temperature to react, therefore, any reaction will not be produced at a lower temperature.At a lower temperature, insoluble sulfur is simply until vulcanizing the scattered solid surrounded by rubber.
Being as noted previously, as compared with dissolubility sulfur, the technical advantage that insoluble sulfur can provide, so having carried out the exploitation of a lot of manufacture method about insoluble sulfur.In existing method, the content of the insoluble sulfur (IS) in the end product produced less than 90%, and, insoluble sulfur has high high-temp stability (HTS；At 105 DEG C heat more than 15 minutes without dissolve and decomposition content) insoluble sulfur below 70%, sieve residual (100 order) is more than 1.5%, therefore, wish to work out and can be used as the high-quality of vulcanizing agent at tire art (IS content is more than 90%, more than HTS71%, sieve residual is below 1.5%) the manufacture method of insoluble sulfur.
U.S. Patent No. 6,555, No. 087 discloses a kind of method for producing macromolecule sulfur, including: make sulfur steam directly contact with the cold preservation suspension being made up of Carbon bisulfide, dissolubility sulfur, polymer sulfur in cooling container, cooling is 55 DEG C～80 DEG C rapidly, and a part of sulfur steam is converted to the step of powdery polymer sulfur；The step of result suspension is reclaimed from cooling container；Above-mentioned suspension is put into again the step of cooling container；And make the step of remaining effect suspension stabilization.
No. 0053832 manufacture method disclosing a kind of insoluble sulfur of European Patent No., including: after making sulfur become steam, mix hydrogen sulfide and sulfur steam and cool down rapidly, isolating the step of insoluble sulfur from cooling medium rapidly.According to the method, by adding hydrogen sulfide in pending sulfur steam, thus improving the mobility of handled material, the final stability improving insoluble sulfur product, actually can suppress the end that black splotch pollutes final products occur simultaneously.
On the other hand, it is Powdered by the insoluble sulfur of the quickly cooling method manufacture being cold-producing medium with Carbon bisulfide, it is suspended in using the amount of about 10% in the Carbon bisulfide solution of cold-producing medium, forms serosity, this serosity is also dissolved with the dissolubility sulfur not being converted to insoluble sulfur.Accordingly it is desirable to be removed Carbon bisulfide cold-producing medium, the dissolubility sulfur etc. that are included in serosity, separate also refine and go out the process of insoluble sulfur.And, in order to obtain the high-purity that can be used as vulcanizing agent in Rubber Industry, (insoluble sulfur is more than 90%, HTS(is in paraffin oil, heat the content % of still Undec insoluble sulfur after 15 minutes at 105 DEG C) more than 71%) insoluble sulfur, it is desirable to be able to fully remove the separation of Carbon bisulfide cold-producing medium, dissolubility sulfur etc., method of refining.
But, existing manufacture method has not been recognized that the importance of the separation of above-mentioned insoluble sulfur, method of refining, or but without realizing the exploitation of the separation of insoluble sulfur, method of refining, therefore, it is also difficult at present produce the high-quality insoluble sulfur that can be used as vulcanizing agent at Rubber Industry.
Patent documentation 1: U.S. Patent No. 6,555,087
Patent documentation 2: European Patent No. 0053832
Summary of the invention
For this, the present inventor is by unremitting research, develop to obtain highly purified insoluble sulfur from by Carbon bisulfide as the insoluble sulfur serosity of the quickly cooling method manufacture of cold-producing medium, remove Carbon bisulfide cold-producing medium, dissolubility sulfur etc., namely separable/refine goes out the method for highly purified insoluble sulfur that can be used as vulcanizing agent at Rubber Industry, thus completing the present invention.
Thus, it is an object of the invention to provide a kind of from the method for highly purified insoluble sulfur going out to can be used as at Rubber Industry vulcanizing agent by Carbon bisulfide as the insoluble sulfur serosity separation/refine of the quickly cooling method manufacture of cold-producing medium.
To achieve these goals, the present invention provides the method that the separation/refine comprised the following steps goes out highly purified insoluble sulfur.
) the insoluble sulfur serosity produced by the quickly cooling method that is cold-producing medium with Carbon bisulfide is supplied to the step of the centrifugal dehydrator being provided with 100 order～250 order filter bags；
) carry out centrifugation at a high speed, thus carrying out the step of dehydration；
) middling speed rotating centrifugal dewaterer, and the step of aqueous Carbon bisulfide is injected to the insoluble sulfur after dehydration；
) high speed rotating centrifugal dehydrator, the step of washing insoluble sulfur；And
) insoluble sulfur becoming block (cake) the step discharged is isolated from filter bag.
As required, the manufacture method of the present invention can also include in step) insoluble sulfur that obtains carries out) dry step.
Step): supply
The insoluble sulfur serosity that the quickly cooling method being cold-producing medium with Carbon bisulfide produces is supplied to the centrifugal dehydrator being provided with 100 order～250 order filter bags.
In the present invention, as long as insoluble sulfur serosity is manufactured by the quickly cooling method using Carbon bisulfide as cold-producing medium.Generally, in the quickly cooling method being cold-producing medium with Carbon bisulfide, by the steam of Molten sulphur, utilize Carbon bisulfide cold-producing medium to cool down rapidly, maturation step manufactures, but, be not limited to this.The concentration of the pulverous insoluble sulfur in serosity is generally below 10%, but is not limited to this.
Preferably, supply 2,500kg/hr～3 to centrifugal dehydrator, the serosity of 500kg/hr, and, it is preferable that when supply with 500rpm～600rpm rotating centrifugal dewaterer and supply.If rotating over 600rpm during supply, then solvent flies out from outlet, and if less than 500rpm, then serosity tilts downwards.
Powder agglomeration state, namely block insoluble sulfur centrifugal dehydrator be provided with 100 order～250 order filter bags, thus can only be isolated.
Do not limit the material of filter bag, it is possible to use for solvent, there is corrosion proof PE(polyethylene) or Teflon etc..
Preferably, temperature during supply serosity maintains less than 30 DEG C, and this is to prevent Carbon bisulfide from volatilizing, it is ensured that the operation of safety.
Step): dehydration
The insoluble sulfur serosity supplied is carried out centrifugation at a high speed, it is achieved dehydration.
Here, " dehydration " refers to and utilizes centrifugal force to isolate Carbon bisulfide and the mixed solution of dissolubility sulfur from serosity, is transported to the process in the tank that the bottom with centrifugal dehydrator is connected.
Here, " at a high speed " represents 1200rpm～1300rpm, and in dehydration, it is preferable that utilize the centrifugal force of such high speed to be easily separated, within the scope of this, big vibration will not occur centrifugal dehydrator, is minimized by dewatering time safely.According to speed, the centrifugation time is preferably 10 minutes～15 minutes.
Serosity in centrifugal dehydrator, by centrifugal force dehydration at a high speed, is only left block insoluble sulfur.
Focus on the Carbon bisulfide in the tank being connected to centrifugal dehydrator bottom and dissolubility sulfur is transported to seperator, separation and recovery such that it is able to recycling.
Step): inject Carbon bisulfide
Middling speed rotating centrifugal dewaterer, injects aqueous Carbon bisulfide (clean CS to the insoluble sulfur of dehydration2).
In this process, the dissolubility sulfur in the insoluble sulfur product remaining in dehydration is dissolved in Carbon bisulfide.
Here, " middling speed " represents 500rpm～600rpm, preferably rotates with middling speed in the step injecting Carbon bisulfide, if rotating over 600rpm, then solvent flies out from outlet, and if less than 500rpm, then serosity tilts downwards.According to speed, injection length is preferably 60 seconds～90 seconds.
Inject the amount of aqueous Carbon bisulfide at 50～80%(v/v of centrifugal dehydrator) time most effective, but be not limited to this.
Step): washing
High speed rotating centrifugal dehydrator, washs insoluble sulfur.
Here, " washing " refers to and utilizes centrifugal force to isolate in step) Carbon bisulfide that supplies and be dissolved in dissolubility sulfur therein, and it is transported to the process of the tank that the bottom with centrifugal dehydrator is connected.
Here, " at a high speed " represents 1200～1300rpm, preferably is centrifuged separating with such high speed in washing step, and within the scope of this, big vibration will not occur centrifugal dehydrator, is minimized by dewatering time safely.According to speed, the centrifugation time is preferably 10 minutes～15 minutes.
After washing, the insoluble sulfur of only remaining block separation/refine by centrifugal force dehydration at a high speed in centrifugal dehydrator.
Step): separate/discharge
The insoluble sulfur of block (cake) is separated from filter bag by scraper.
The method scraping off insoluble sulfur from filter bag by the scraper (cutter) being arranged in centrifugal dehydrator realizes separating, but, it is not limited to this.
During separation, it is preferable that centrifugal dehydrator rotates with " low speed " 150rpm～250rpm, within the scope of this, it is possible to prevent filter bag impaired and centrifugal dehydrator over loading, successfully discharge.According to rotary speed, rotational time is preferably 40 seconds～60 seconds.The insoluble sulfur separated is discharged by the outlet of centrifugal dehydrator.
Step) dry
In step) insoluble sulfur discharged can through dry run.Can be dried according to existing method.Preferably employ the vacuum drying that can avoid thermal decomposition, but, it is not limited to this.
Separation/method of refining according to the present invention, removes the Carbon bisulfide as cold-producing medium and unreacted dissolubility sulfur fully, thus producing the highly purified insoluble sulfur with the characteristic shown in table 1.
Table one
1Sieve residual: utilize the end product of water washing pulverulence of flowing, and be passed to standard screen cloth (100 order), remains in the percentage ratio of the content of material on standard screen
=(weight g of the residual quantity g/ test portion (initial product) on standard screen) × 100
2HTS: the percentage ratio of the content (after heating remaining IS content) not dissolving after the end product of pulverulence is heated more than 15 minutes at 105 DEG C and decomposing in Carbon bisulfide
=[not the IS% in the weight g × test portion of capacity (IS) g/(test portion)] × 100
3Ash quantity: heating end product (test portion) carries out the percentage ratio of the content of post-ash residue matter
=(weight g of final residue g/ test portion) × 100
In the present invention, without particularly showing, % represents weight %.
Separation/the method for refining of the insoluble sulfur according to the present invention, Carbon bisulfide cold-producing medium, dissolubility sulfur etc. is removed such that it is able to produce the highly purified insoluble sulfur that can be used as vulcanizing agent at Rubber Industry from the insoluble sulfur serosity passed through so that the quickly cooling method that Carbon bisulfide is cold-producing medium manufactures.
Further, the separation/method of refining according to the present invention, the cold-producing medium of recyclable recycling high price such that it is able to save manufacturing cost, it is also possible to realize the stabilisation of manufacturing environment.
The insoluble sulfur that separation according to the present invention/method of refining produces is high-quality, insoluble sulfur in the total sulfur of its IS(, INSOLUBLESULFURONTOTALSULFUR) content is more than 90%, sieve residual is below 1.5%, HTS is more than 71%, and particle diameter is 5 μm～30 μm, therefore, at Rubber Industry, when especially manufacturing tire, it is used as vulcanizing agent.
Accompanying drawing explanation
Fig. 1 is the separation process example schematic diagram of the insoluble sulfur according to the present invention.
Fig. 2 a～Fig. 2 c is the electron micrograph of the insoluble sulfur particle of separation/refine in embodiment 1～3.
Detailed description of the invention
Below, the present invention is explained in more detail by embodiment, but, the present invention is not limited to these embodiments.
Embodiment
Reference example: manufacture serosity
Make the Molten sulphur being about 130 DEG C become steam at about 635 DEG C, manufacture sulfur steam, by sulfur steam with the flow velocity of 500kg/hr be supplied to 30 DEG C～60 DEG C be filled with about 30～50% Carbon bisulfide solution cooler after cool down.At this moment, recycling solution is made from cooler lower to upper part continuously with 120 tons/hr speed.By being located at the heat exchanger of the recirculation pipe arrangement of cooler, cooler internal temperature maintaining 30 DEG C～60 DEG C, pressure maintains 1.0kg/cm2～1.2kg/cm2, the Carbon bisulfide serosity including insoluble sulfur that formed by being located at the agitator of cooler bottom to stir.In cooler bottom, the serosity of 12,000kg/hr is extracted by pump, is supplied to the maturation device maintaining less than 40 DEG C, is filled to 50%(v/v) below, stir 30～60 minutes, make the insoluble sulfur maturation in serosity.
Embodiment 1
The serosity that manufactures according to reference example is supplied with the speed of 2650kg/hr 15 minutes while making the centrifugal dehydrator being provided with 120 order filter bags 560rpm at 28 DEG C rotate, afterwards, centrifugation and the dehydration of 12 minutes is carried out with 1200rpm, afterwards, with 560rpm rotating centrifugal dewaterer, inject clean (new) Carbon bisulfide solution 100kg, inject 60 seconds, afterwards, with 180rpm rotating centrifugal dewaterer, run scraper 40 seconds simultaneously, the block insoluble sulfur that separate and discharge the centrifugation carrying out 12 minutes with 1200rpm from filter bag after, washing obtains, afterwards, carry out vacuum drying, obtain the insoluble sulfur of the yellow powder having the property that, Fig. 2 a illustrates the photo utilizing ultramicroscope to shoot its particle diameter.
IS content: 91%
HTS(105 DEG C/15 minutes): 72%
Sieve residual (100 order): 1.3%
Embodiment 2
The serosity that manufactures according to reference example is supplied with the speed of 2590kg/hr 12 minutes while making the centrifugal dehydrator being provided with 180 order filter bags 580rpm at 25 DEG C rotate, afterwards, centrifugation and the dehydration of 13 minutes is carried out with 1210rpm, afterwards, with 580rpm rotating centrifugal dewaterer, inject clean (new) Carbon bisulfide solution 120kg, inject 75 seconds, afterwards, with 190rpm rotating centrifugal dewaterer, run scraper 50 seconds simultaneously, the block insoluble sulfur that separate and discharge the centrifugation carrying out 13 minutes with 1210rpm from filter bag after, washing obtains, afterwards, carry out vacuum drying, obtain the insoluble sulfur of the yellow powder having the property that, Fig. 2 b illustrates the photo utilizing ultramicroscope to shoot its particle diameter.
IS content: 92%
HTS(105 DEG C/15 minutes): 74%
Sieve residual (100 order): 1.4%
Embodiment 3
The serosity that manufactures according to reference example is supplied with the speed of 3350kg/hr 15 minutes while making the centrifugal dehydrator being provided with 220 order filter bags 595rpm at 30 DEG C rotate, afterwards, centrifugation the dehydration of 15 minutes is carried out with 1215rpm, afterwards, with 595rpm rotating centrifugal dewaterer, inject clean (new) Carbon bisulfide solution 150kg, inject 85 seconds, afterwards, with 210rpm rotating centrifugal dewaterer, run scraper 55 seconds simultaneously, the block insoluble sulfur that separate and discharge the centrifugation carrying out 15 minutes with 1215rpm from filter bag after, washing obtains, afterwards, carry out vacuum drying, obtain the insoluble sulfur of the yellow powder having the property that, Fig. 2 c illustrates the photo utilizing ultramicroscope to shoot its particle diameter.
IS content: 91%
HTS(105 DEG C/15 minutes): 72%
Sieve residual (100 order): 1.3%.
Claims (7)
1. a separation method for insoluble sulfur, including:
) the insoluble sulfur serosity produced by the quickly cooling method that is cold-producing medium with Carbon bisulfide is supplied to the step in the centrifugal dehydrator being provided with 100 order～250 order filter bags；
) be centrifuged separating with 1200rpm～1300rpm, thus carrying out the step of dehydration；
) with 500rpm～600rpm rotating centrifugal dewaterer, and the step of aqueous Carbon bisulfide is injected to the insoluble sulfur of dehydration；
) with 1200rpm～1300rpm rotating centrifugal dewaterer, the step of washing insoluble sulfur；And
) isolated the step of insoluble sulfur of bulk from filter bag by scraper.
2. the separation method of insoluble sulfur according to claim 1, it is characterised in that
In step) after, also include:
The step that insoluble sulfur is dried.
3. the separation method of insoluble sulfur according to claim 1, it is characterised in that
In step i), centrifugal dehydrator maintains less than 30 DEG C, rotates with 500rpm～600rpm.
4. the separation method of insoluble sulfur according to claim 1, it is characterised in that
In step i), filter bag is polyethylene or the filter bag of Teflon material.
5. the separation method of insoluble sulfur according to claim 1, it is characterised in that
In step) in, carry out the dehydration of 10 minutes～15 minutes.
6. the separation method of insoluble sulfur according to claim 1, it is characterised in that
In step) in, carry out the washing of 10 minutes～15 minutes.
7. the separation method of insoluble sulfur according to claim 1, it is characterised in that
In step) in, the separation of 40 seconds～60 seconds is carried out with 150rpm～250rpm rotating centrifugal dewaterer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2013-0110949 | 2013-09-16 | ||
| KR20130110949A KR101491970B1 (en) | 2013-09-16 | 2013-09-16 | Process for isolation of insoluble sulfur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104445086A CN104445086A (en) | 2015-03-25 |
| CN104445086B true CN104445086B (en) | 2016-07-06 |
Family
ID=52591912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410078593.3A Active CN104445086B (en) | 2013-09-16 | 2014-03-05 | The separation method of insoluble sulfur |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101491970B1 (en) |
| CN (1) | CN104445086B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102645363B1 (en) * | 2019-09-25 | 2024-03-07 | 주식회사 엘지화학 | Method and device for dehydration |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1125889A2 (en) * | 2000-02-08 | 2001-08-22 | Repsol Petroleo S.A. | Procedure for the production of polymeric sulphur |
| CN102398896A (en) * | 2011-09-30 | 2012-04-04 | 河南省开仑化工有限责任公司 | New production technology of insoluble sulfur for rubber use |
| CN102730648A (en) * | 2012-07-03 | 2012-10-17 | 山东尚舜化工有限公司 | Production method of high-quality insoluble sulfur |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4359452A (en) | 1980-12-10 | 1982-11-16 | Stauffer Chemical Company | Process for the production of insoluble sulfur |
| KR910019499A (en) * | 1990-05-19 | 1991-12-19 | 이윤희 | Method and apparatus for producing crystalline lime sulfur mixture |
-
2013
- 2013-09-16 KR KR20130110949A patent/KR101491970B1/en active IP Right Grant
-
2014
- 2014-03-05 CN CN201410078593.3A patent/CN104445086B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1125889A2 (en) * | 2000-02-08 | 2001-08-22 | Repsol Petroleo S.A. | Procedure for the production of polymeric sulphur |
| CN102398896A (en) * | 2011-09-30 | 2012-04-04 | 河南省开仑化工有限责任公司 | New production technology of insoluble sulfur for rubber use |
| CN102730648A (en) * | 2012-07-03 | 2012-10-17 | 山东尚舜化工有限公司 | Production method of high-quality insoluble sulfur |
Non-Patent Citations (1)
| Title |
|---|
| EASTMAN.Additional product information : Product-Technical Data sheet & Sales Specifications.《Crystex™HS OT 10》.2013, * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104445086A (en) | 2015-03-25 |
| KR101491970B1 (en) | 2015-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9902859B2 (en) | Pelletization of pyrolyzed rubber products | |
| ES2646462T3 (en) | Method and apparatus for regenerating vulcanized rubber | |
| PT2419255E (en) | Method and apparatus for recycling plastic materials | |
| US11931921B2 (en) | Extruder, facility comprising an extruder, and method for producing target polymer products consisting of a plastic-containing material from a solution using such an extruder | |
| US8617492B2 (en) | System and method for making low volatile carboneaceous matter with supercritical CO2 | |
| US20090172998A1 (en) | System and method for refining carbonaceous material | |
| CN105060256B (en) | Production device and method for recovering sulfur from sulfur slag | |
| CN104445087B (en) | The insoluble sulfur of high-quality and manufacture method thereof | |
| JP2005511340A (en) | Elastomer mixtures for rubber production | |
| CN104445086B (en) | The separation method of insoluble sulfur | |
| CN107745462A (en) | Plastic recovery system and method | |
| CN106397829B (en) | A kind of scrap rubber regeneration method and device based on supercritical carbon dioxide | |
| RU2215724C2 (en) | Method of production of spherical particles of energy-giving compounds | |
| JP2007039479A (en) | Method for treating vinyl chloride resin waste and recycled vinyl chloride resin | |
| US9457295B2 (en) | Systems and methods for separating mine tailings from water-absorbing polymers and regenerating the separated water-absorbing polymers | |
| CN103755871B (en) | A kind of preparation method of high stability SBR styrene butadiene rubbers | |
| KR20200083811A (en) | Polysthylene extraction system for recycling of fire resilient styroform | |
| CN101575421B (en) | Method for recovering polypropylene in leftovers of filament tow mouth bar of waste polypropylene | |
| CN101497705B (en) | Process for recovering polypropylene in waste polypropylene fibre beam filtertip leftover | |
| JP4857540B2 (en) | Method for producing coking coal and method for producing coke | |
| JPS627429A (en) | Method for obtaining colloidal particle aggregate | |
| JPH0623747A (en) | Reclaiming method of plastic product having coating | |
| KR101663705B1 (en) | Method and apparatus for recycling thermoplastic resin from resin mixture | |
| JP4857541B2 (en) | Solid binder and method for producing coal and coke using solid binder | |
| JP2004230774A (en) | Separating-recovering method for plastics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |