CN104072642A - Device for recycling skim rubber - Google Patents
Device for recycling skim rubber Download PDFInfo
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- CN104072642A CN104072642A CN201310104898.2A CN201310104898A CN104072642A CN 104072642 A CN104072642 A CN 104072642A CN 201310104898 A CN201310104898 A CN 201310104898A CN 104072642 A CN104072642 A CN 104072642A
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Abstract
The invention relates to a device for recycling skim rubber. The device comprises a water tank, a condensation tank, an emulsion tank, a membrane device, and a stirrer; and is characterized in that the water tank, the condensation tank, and the emulsion tank are connected; the membrane device is a hollow fiber curtain membrane assembly; and the stirrer is composed of detachable stirring paddles. The air in the membrane device is exhausted by a suction pump so as to form a certain negative pressure in the membrane device; thus partial ammonia and non-rubber components with a small molecular weight are filtrated out of the membrane device through the membrane surface, so the NR-S quality is improved. Compared to the conventional recycling method, the device can recycle the rubber hydrocarbon from skim latex, can also reduce the content of non-rubber components, improves the operation safety, and reduces the wastewater treatment cost and environmental pollution.
Description
Technical field
The present invention relates to a kind of device that reclaims skim rubber, can improve the performance of skim rubber (NR-S) and reduce environmental pollution.
Background technology
Glue is clearly natural rubber latex while preparing revertex, the emulsion of separating through whizzer.Compared with fresh latex, glue mainly contains clearly following several feature: (1) drc is low; (2) nonrubber substances content is high; (3) ammonia content is high; (4) variability is large; (5) mean diameter of rubber particles is little; (6) easily smelly.At present, reclaim method that glue is clear both at home and abroad and mainly contain two kinds of dry glue absorption method and concentration and recovery methods.
Dry glue absorption method:
Dry glue absorption method is a kind of method all extensively adopting both at home and abroad, for saving peptizer and glue clearly easily being solidified and improve the quality that glue is clear, first by the ammonia content of NR-S from more than 0.25% being reduced to 0.1% left and right.The method that cleans ammonia as for glue mainly contains three kinds of natural ventilation, mechanical air blast and centrifugal atomizings.Wherein, the first is to allow glue clearly in the place certain approach of flowing through ventilating, and borrows natural wind that ammonia is removed, and this method is subject to landform restriction and not ideal enough except ammonia effect, generally also will be combined and carry out with mechanical ammonia elimination process.The second utilizes gas blower air blast, and glue is blown out clearly to fine mist, increases the clear contact area with air of glue, and the volatilization of promotion ammonia, if divide two sections of blowings with two gas blowers, just can make the ammonia content that glue is clear successfully be reduced to 0.1% left and right.The third is to allow glue drop on clearly on the rotating disk of high speed rotating, by the effect of centrifugal force, glue is thrown into clearly to fine mist, accelerates the volatilization of ammonia, and it is effective that this method is removed ammonia.The shortcoming of latter two method is to consume more power and certain facility investment.
Glue is removed after ammonia acid adding and is directly solidified and make NR-S smoke sheet rubber or NR-S to sheet glue, or adds strong acid and directly solidify and make NR-S pearl glue.The clear drc of glue is low, and ammonia content is high, neutralizes and solidifies by acid amount manyly, and in order to reduce costs and don't to affect rubber quality, half adopts in sulfuric acid and residual ammonia more, solidifies with acetic acid.The concentration of sulfuric acid is 10%～15%, and acetic acid concentration is 15%～20%.Concentration is too low, and rubber-clear freezing is slower, and grumeleuse is softer; Excessive concentration, easily causes local solidification.
Also there are some shortcomings in the method simultaneously, solid such as strengthening acid cure, and environment is caused to certain pollution.Rubber hydrocarbon content is low, and the rubber content of NR-S film is generally 70%～85%, and common rubber smoked sheet contains rubber hydrocarbon more than 92%, and this is that rubber particles is less because NR-S is many containing the whey substance of crude rubber latex, due to protective layer material is relatively many.Nonrubber component concentration is high, cause variability large and easily incipient scorch, hardness is large, rebound resilience is poor, the violent content of copper is slightly high in addition, may be the reason that NR-S aging coefficient is lower.Many and cause the performance abnormality of NR-S for nonrubber substances content, for improving the performance of NR-S and improving its use value and benefit, all once did much research both at home and abroad, as protease treatment method, alkaline purification/solution soaking method, alkaline purification method, natural coagulation, salt solidify, flocculation etc., but because these method production cycle length, complex procedures, that extra charge is many, the rubber rate of recovery is few etc. is former thereby can not extensively employing in production.
Concentration and recovery method:
Concentration and recovery method comprises livering method, again centrifuging, livering and centrifugal and usage and prepares acid latex method etc.
(1) livering method is that common creaming agent is added to NH-S emulsion, NR-S emulsion can be condensed into the livering latex that drc is 45% left and right, and its main feature is simple to operate.Effective when quite high at the original thousand glue content of NR-S, but when NR-S concentration is too low, though add a large amount of creaming agents can not make it livering, allow to the NR-S of livering, its creaming agent consumption and latex contrast are quite large, and some rubber can not all be regained in whey all the time.
(2) centrifuging is to use and the centrifugal different adjustable pipe of latex, governing screw combination again, NR-S emulsion is centrifugal again, because NR-S gel content is low, rubber particles is again little, therefore the efficiency of processing is very low, power consumption is also larger, thereby also must further process, but the concentrated natural latex obtaining, its quality is better than livering method.
(3) livering is with centrifugal and with being that concentrated livering cream breast and fresh latex are mixed, concentrated with whizzer again, the character of gained concentrated natural latex is more or less the same with normal centrifugal concentrating natural rubber latex, whizzer operation is also normal, but this method still makes the rubber of 3% left and right be lost in NR-S emulsion, and operate complicatedly, cost recovery is higher.
(4) preparing acid latex method is first to make the flocculation of NR-S emulsion with acid, remove and contain the aqueous solution of non-rubber substance and wash paint gel, then nonionogenic tenside is added in flocculation rubber, make this rubber still in the time of acid state, again be dispersed into stable acid latex, containing the NR-S of 8.2% total solids, can be made into concentration and be 21% stabilized latex.
In NR industry, Rubber Yield is no doubt important, but output is limited, therefore in glue industry, the recovery of lemon glue also being seemed to quite important.Due to the clear ratio that partly accounts for fresh latex 60% of glue, as suitable in the method that reclaims rubber hydrocarbon wherein, can not only reduce production costs, the rate of recovery is high, and the NR-S application performance obtaining is close to normal latex rubber, equal again relatively to have increased Rubber Yield, therefore the clear recovery operation of research glue is significant.
Summary of the invention
Reclaim the method for NR-S in order to improve tradition, when ensureing original rate of recovery, improve NR-S quality.This reality invention adopts tubular fibre curtain type membrane device, not only effectively reduces content and the ammonia content of non-rubber component, and the clear emulsion of the glue obtaining is again when acid coagulation, can replace the concentrated acid that traditional method is used with weak acid.Meanwhile, effectively reclaim rubber hydrocarbon, improve rubber hydrocarbon quality.
The technical solution adopted for the present invention to solve the technical problems is: the thickener that clear glue emulsion is poured into is also all immersed in film device in emulsion, form negative pressure by suction pump in film device the inside, the surface that part ammonia in the clear emulsion of glue and other non-rubber components can see through filter membrane with certain flow rate flows into the pipeline and then be drawn out of of catchmenting, and the material that is greater than retaining molecular weight does not see through film.In addition, by the stirring of stirrer, make the clear emulsion of glue form wrong surface current on film surface moving, prevent that removal process from producing concentration polarization phenomenon, impel the non-rubber substance that is less than retaining molecular weight to isolate, reach the object that improves NR-S quality.
Beneficial effect of the present invention is, process does not have phase transformation, easy and simple to handle, and floor space is little, and labor cost is low; Process, without adding solvent solvent, is not brought secondary pollution material into; Equipment can move automatically, and good stability is easy to maintenance, can operate at normal temperatures; The skim rubber rate of recovery is higher, and quality also increases.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is further described.
Accompanying drawing is a kind of device organigram that reclaims skim rubber of the present invention.
1. tanks in figure, 2. thickener, 3. emulsion groove, 4. hollow fiber curtain type membrane component, 5. suction pump, 6. tensimeter, 7. stirrer, 8,9. water pump, the 10. clear emulsion transfer line of glue, 11. water supply pipes, 12,13,14,15. valves.
Embodiment
In the drawings, the clear emulsion of glue of Jiao Qingchi (3) is transported in concentration basin (2) by water pump (8), and by hollow fiber curtain type membrane component (4) submergence.Meanwhile, start stirrer (7) and stir emulsion with certain speed, make emulsion form wrong surface current on film surface moving, ensure suction filtration efficiency.Then use suction pump (5) that the air of membrane module the inside is extracted out, form negative pressure, impel part ammonia and other non-rubber components in emulsion see through film surface and then are transported to pond (1), then the size of adjusting negative pressure according to tensimeter (6) is to keep the stable of removal process, in order to add the concentrated required raw material of the clear emulsion of glue, described emulsion groove (3) top is provided with water pump (9) and the clear emulsion transfer line of glue (10).The last clear emulsion of glue is concentrated to after the concentration of regulation, opens valve (14), makes emulsion flow into coagulation tank and solidifies.
Claims (3)
1. a device that reclaims skim rubber, comprises pond, concentration basin, and bath of emulsion, film device, agitator, is characterized in that: described pond, concentration basin, bath of emulsion are connected; Described film device is hollow fiber curtain type membrane component; The stirring rake of described agitator can be dismantled.
2. a kind of skim rubber concentrating unit that reclaims according to claim 1, is characterized in that: described bath of emulsion top is provided with feed line road.
3. a kind of skim rubber concentrating unit that reclaims according to claim 1, is characterized in that: described pond, bath of emulsion, concentration basin material therefor are transparent synthetic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310104898.2A CN104072642A (en) | 2013-03-29 | 2013-03-29 | Device for recycling skim rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310104898.2A CN104072642A (en) | 2013-03-29 | 2013-03-29 | Device for recycling skim rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104072642A true CN104072642A (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310104898.2A Pending CN104072642A (en) | 2013-03-29 | 2013-03-29 | Device for recycling skim rubber |
Country Status (1)
| Country | Link |
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| CN (1) | CN104072642A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111135982A (en) * | 2020-01-17 | 2020-05-12 | 武汉嘉宏和设备有限公司 | Sealant recycling system and method |
| CN112896517A (en) * | 2021-02-05 | 2021-06-04 | 海南天然橡胶产业集团股份有限公司 | Rubber forest unmanned aerial vehicle effect testing arrangement that dusts |
| CN115521391A (en) * | 2022-09-16 | 2022-12-27 | 海南省先进天然橡胶复合材料工程研究中心有限公司 | Equipment and process for removing ammonia from rubber |
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| JPS51110482A (en) * | 1975-03-25 | 1976-09-30 | Asahi Chemical Ind | GENGAIROKASOCHI |
| JPS5328144B2 (en) * | 1974-05-08 | 1978-08-12 | ||
| CN102504049A (en) * | 2011-11-17 | 2012-06-20 | 海南大学 | Method for recovering skim rubber |
| CN202369528U (en) * | 2011-12-21 | 2012-08-08 | 宁波顺泽橡胶有限公司 | Unloading device used in rubber polymerization reaction |
| CN102872722A (en) * | 2012-07-20 | 2013-01-16 | 北京赛诺膜技术有限公司 | Column-type hollow fiber membrane assembly |
| US20130026085A1 (en) * | 2011-07-22 | 2013-01-31 | James Samsoondar | Sample filtration assembly |
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2013
- 2013-03-29 CN CN201310104898.2A patent/CN104072642A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328144B2 (en) * | 1974-05-08 | 1978-08-12 | ||
| JPS51110482A (en) * | 1975-03-25 | 1976-09-30 | Asahi Chemical Ind | GENGAIROKASOCHI |
| US20130026085A1 (en) * | 2011-07-22 | 2013-01-31 | James Samsoondar | Sample filtration assembly |
| CN102504049A (en) * | 2011-11-17 | 2012-06-20 | 海南大学 | Method for recovering skim rubber |
| CN202369528U (en) * | 2011-12-21 | 2012-08-08 | 宁波顺泽橡胶有限公司 | Unloading device used in rubber polymerization reaction |
| CN102872722A (en) * | 2012-07-20 | 2013-01-16 | 北京赛诺膜技术有限公司 | Column-type hollow fiber membrane assembly |
Non-Patent Citations (1)
| Title |
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| 北京博奇电力科技有限公司编: "《湿法脱硫装置维护与检修》", 31 January 2010, 中国电力出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111135982A (en) * | 2020-01-17 | 2020-05-12 | 武汉嘉宏和设备有限公司 | Sealant recycling system and method |
| CN112896517A (en) * | 2021-02-05 | 2021-06-04 | 海南天然橡胶产业集团股份有限公司 | Rubber forest unmanned aerial vehicle effect testing arrangement that dusts |
| CN112896517B (en) * | 2021-02-05 | 2023-02-07 | 海南天然橡胶产业集团股份有限公司 | Forest unmanned aerial vehicle of rubber effect testing arrangement that dusts |
| CN115521391A (en) * | 2022-09-16 | 2022-12-27 | 海南省先进天然橡胶复合材料工程研究中心有限公司 | Equipment and process for removing ammonia from rubber |
| CN115521391B (en) * | 2022-09-16 | 2023-12-05 | 海南省先进天然橡胶复合材料工程研究中心有限公司 | Gum clearing ammonia reducing equipment and process thereof |
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Application publication date: 20141001 |