CN103692576A - Method and system for recovering PTFE (Polytetrafluoroethylene) fibers and PPS (Polyphenylene Sulfide) in waste dust removing bag - Google Patents
Method and system for recovering PTFE (Polytetrafluoroethylene) fibers and PPS (Polyphenylene Sulfide) in waste dust removing bag Download PDFInfo
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- CN103692576A CN103692576A CN201310696503.2A CN201310696503A CN103692576A CN 103692576 A CN103692576 A CN 103692576A CN 201310696503 A CN201310696503 A CN 201310696503A CN 103692576 A CN103692576 A CN 103692576A
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- dust settling
- settling pocket
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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
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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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
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Abstract
The invention discloses a method and system for recovering PTFE (Polytetrafluoroethylene) fibers and PPS (Polyphenylene Sulfide) in a waste dust removing bag. The method comprises the following steps of carrying out hot-melting, namely, at a temperature of 250-260 DEG C, carrying out hot-melting on the waste dust removing bag until the PPS is completely melted; crushing, namely, crushing a cooled blocky hot-melted object into a mixture of powder, fibers and blocky solid matters; and screening, namely, screening the mixture, recovering the PTFE fibers and the PPS powder, and crushing the blocky solid matters. The method has the beneficial effects that the hot melting is preformed according to the difference of melting points of two materials, and the separation is performed according to the difference of physical properties so that the PTFE fibers and the PPS in the waste dust removing bag are recycled.
Description
Technical field
The present invention designs dust settling pocket and reclaims field, is specifically related to a kind of method and system thereof that reclaims PTFE fiber and PPS in waste and old dust settling pocket.
Background technology
PPS(polyphenylene sulfide) and PTFE(polytetrafluoroethylene (PTFE)) dust settling pocket can obtain the favor of numerous industrial production producer because of it up to 99.99% filterability to micron order dust, it is widely used in the industries such as iron and steel, cement, metallurgy and chemical industry.Meanwhile, PTFE material and PPS material unit price are all higher, cause this dust settling pocket also expensive.In order to reduce production costs, it is imperative that waste and old dust settling pocket is reclaimed, but in the exploitation of recovery technology, PTFE is difficult to process, and PTFE is commonly called as King, in the chloroazotic acid boiling, does not also change.Therefore, be limited by the too good chemical stability of PTFE, prior art wish reclaim and can not, waste and old dust settling pocket can only be stored.
Summary of the invention
In view of this, a kind of method and system thereof that reclaims PTFE fiber and PPS in waste and old dust settling pocket provided by the invention, to solve the above-mentioned deficiency of prior art.
For achieving the above object, the technical solution used in the present invention is:
A method that reclaims PTFE fiber and PPS in waste and old dust settling pocket, comprises the following steps:
101: hot melt, at the temperature of 250 ℃-260 ℃, the waste and old dust settling pocket of hot melt until PPS melt completely;
102: fragmentation, by the cooled solid piece of the hot-melt object fragmentation mixture of powder, fiber, block solid content most;
103: screening, by the screening of mixture top sieve, PTFE fiber and PPS powdery reclaim, and block solid content returns to step 102.By fusing, pulverizing and screening, PTFE and PPS are separated.
Further, before step 101, described recovery method is further comprising the steps of:
201: collect, collect waste and old dust settling pocket and arrange;
202: clean, the dust settling pocket of collecting is cleaned;
203: dry, dust settling pocket after cleaning is dried to the weight to water content 5%() below;
204: cut apart, the dust settling pocket after drying is divided into rectangular or piece.
Clean and remove the dust adhering on dust settling pocket, after cutting apart, be more convenient to hot melt.
Further, in step 202, in cleaning process, cleaning fluid is vibrated.Make to clean more abundant.
Preferably, in step 204, dust settling pocket is divided into the rectangular or piece that length is 200-400mm.More be convenient to hot melt, the block after hot melt is convenient to pulverize more.
A recovery system of PTFE fiber and PPS in waste and old dust settling pocket, comprises to dust settling pocket heating and by the thermofusion device of PPS fusing, by the breaker of cooled block hot-melt object fragmentation, and by the screening plant of powder, fiber and the separation of solid piece.
Further, be also included as the cleaning device of dust settling pocket dedusting, the drying unit that the dust settling pocket after cleaning is dried, and the segmenting device that the dust settling pocket after drying is cut apart.
Further, the vibrating device that cleaning fluid is vibrated is installed on cleaning device.
Beneficial effect of the present invention is: the difference by two kinds of melting point substances is carried out hot melt, then carries out separation according to the difference of physical property, to accomplish the recycling of PTFE and PPS in waste and old dust settling pocket.
Accompanying drawing explanation
Fig. 1 is the flow chart of recovery method of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described, obviously, accompanying drawing is described is only a part of the present invention rather than whole embodiment.
As shown in Figure 1, a kind of method that reclaims PTFE fiber and PPS in waste and old dust settling pocket provided by the invention, comprises the following steps:
101: hot melt, at the temperature of 250 ℃-260 ℃, the waste and old dust settling pocket of hot melt until PPS melt completely;
102: fragmentation, by the cooled solid piece of the hot-melt object fragmentation mixture of powder, fiber, block solid content most;
103: screening, by the screening of mixture top sieve, PTFE fiber and PPS powdery reclaim, and block solid content returns to step 102.
Under normal condition, the fusing point of PPS is 281 ℃, and it is that now 250 ℃-260 ℃ can be melted because discarding PPS performance in dust settling pocket after long-term use declines to some extent that the present invention gets 250 ℃-260 ℃.Therefore,, if in practical application be completely not discarded dust settling pocket, this temperature can suitably promote according to the usage degree of dust settling pocket.The fusing point of PTFE, more than 320 ℃, therefore, does not affect the said temperature of PPS fusing to PTFE.
After hot-melt object is cooling, dust settling pocket becomes the PPS solid piece of black, wherein contain PTFE fiber, the PPS solid piece that contains PTFE fiber is carried out to fragmentation, here, according to varying in size of solid piece, if aforementioned cooled solid is block-shaped larger, first machinery impacts to fritter and carries out crusher in crushing again, if size is less, and can be directly broken.Solid piece is crushed to the mixture of powder, fiber, block solid content.In pure theory, be crushed to powder and fibre blend is best, but so broken overlong time in practical operation, and working (machining) efficiency is too low.In application, the ratio of powder and fiber and block solid content is much broken EPs (end of program) actually, can determine according to the working ability of working (machining) efficiency and next procedure screening machine.
By the mixture top sieve of above-mentioned powder, fiber and block solid content, the rotary screen that preferably screen drum tilts, at this moment, powder sieves from mesh, and block fixture directly tumbles to coarse fodder outlet, and fiber can stick to the surface of rotary screen, artificially collects.The inconvenience of use is like this, and rotary screen can not be processed continuously, and after a period of time, fiber can cover mesh completely.As further improving, can use vibratory sieve, inventor in use finds, by the upper vibration hammer of reasonable adjusting vibratory sieve and the angle of lower vibration hammer, can on existing vibratory sieve basis, realize fines, coarse fodder sifts out respectively, and fiber material gathers and screen cloth center, adding an extractor fan can take away, separated thorough and convenient for production.Finally, powder and fiber recovery, the coarse fodder of collection returns to broken process.
As further supplementing, before hot melt, can carry out pretreatment to dust settling pocket, comprise the following steps:
201: collect, collect waste and old dust settling pocket and arrange;
202: clean, the dust settling pocket of collecting is cleaned;
203: dry, dust settling pocket after cleaning is dried to the weight to water content 5%() below;
204: cut apart, the dust settling pocket after drying is divided into rectangular.
The object of above-mentioned cleaning is to remove the dust adhering on dust settling pocket, uses distilled water to clean.The object of cutting apart is that bar is convenient to hot melt more, wherein, more abundant in order to clean during cleaning, can shake cleaning fluid.
The recovery system of PTFE fiber and PPS in a kind of waste and old dust settling pocket provided by the invention, comprise to dust settling pocket heating and by the thermofusion device of PPS fusing, by the breaker of cooled block hot-melt object fragmentation, and by the screening plant of powder, fiber and the separation of solid piece.The vibrating device that cleaning fluid is vibrated is installed on cleaning device.
The description of technique scheme has only embodied the preferred technical solution of the present invention, and is not exhaustively, or limit the invention to disclosed form.Based on embodiments of the invention, the other forms of technical scheme that anyone obtains under the prerequisite of not making creative work, no matter it is in structure or which kind of is made change in form, within all belonging to protection scope of the present invention.
Claims (7)
1. a method of PTFE fiber and PPS in the waste and old dust settling pocket of recovery, is characterized in that, comprises the following steps:
101: hot melt, at the temperature of 250 ℃-260 ℃, the waste and old dust settling pocket of hot melt until PPS melt completely;
102: fragmentation, by the cooled solid piece of the hot-melt object fragmentation mixture of powder, fiber, block solid content most;
103: screening, by the screening of mixture top sieve, PTFE fiber and PPS powdery reclaim, and block solid content returns to step 102.
2. recovery method according to claim 1, is characterized in that, before step 101, described recovery method is further comprising the steps of:
201: collect, collect waste and old dust settling pocket and arrange;
202: clean, the dust settling pocket of collecting is cleaned;
203: dry, dust settling pocket after cleaning is dried to the weight to water content 5%() below;
204: cut apart, the dust settling pocket after drying is divided into rectangular or piece.
3. recovery method according to claim 2, is characterized in that, in step 202, in cleaning process, cleaning fluid is vibrated.
4. recovery method according to claim 2, is characterized in that, in step 204, dust settling pocket is divided into the rectangular or piece that length is 200-400mm.
5. a system that reclaims PTFE fiber and PPS in waste and old dust settling pocket, it is characterized in that, comprise to dust settling pocket heating and by the thermofusion device of PPS fusing, by the breaker of cooled block hot-melt object fragmentation, and by the screening plant of powder, fiber and the separation of solid piece.
6. recovery system according to claim 5, is characterized in that, is also included as the cleaning device of dust settling pocket dedusting, the drying unit that the dust settling pocket after cleaning is dried, and the segmenting device that the dust settling pocket after drying is cut apart.
7. recovery system according to claim 6, is characterized in that, the vibrating device that cleaning fluid is vibrated is installed on cleaning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310696503.2A CN103692576B (en) | 2013-04-03 | 2013-12-18 | Reclaim method and the system thereof of PTFE fiber and PPS in waste and old dust settling pocket |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101137613A CN103144221A (en) | 2013-04-03 | 2013-04-03 | Method and system of recovering PPS (polyphenylene sulfide) in waste dust removal bag |
| CN2013101137613 | 2013-04-03 | ||
| CN201310113761.3 | 2013-04-03 | ||
| CN201310696503.2A CN103692576B (en) | 2013-04-03 | 2013-12-18 | Reclaim method and the system thereof of PTFE fiber and PPS in waste and old dust settling pocket |
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| Publication Number | Publication Date |
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| CN103692576A true CN103692576A (en) | 2014-04-02 |
| CN103692576B CN103692576B (en) | 2016-05-18 |
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| CN2013101137613A Pending CN103144221A (en) | 2013-04-03 | 2013-04-03 | Method and system of recovering PPS (polyphenylene sulfide) in waste dust removal bag |
| CN201310696503.2A Active CN103692576B (en) | 2013-04-03 | 2013-12-18 | Reclaim method and the system thereof of PTFE fiber and PPS in waste and old dust settling pocket |
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| CN2013101137613A Pending CN103144221A (en) | 2013-04-03 | 2013-04-03 | Method and system of recovering PPS (polyphenylene sulfide) in waste dust removal bag |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353658A (en) * | 2014-11-05 | 2015-02-18 | 湖州格尔泰斯环保技术有限公司 | Waste PTFE dedusting filter-bag recycling method |
| CN104530704A (en) * | 2014-12-05 | 2015-04-22 | 中国纺织科学研究院 | Recycling method for waste PPS dedusting filter bag |
| CN105397935A (en) * | 2015-11-30 | 2016-03-16 | 安徽省元琛环保科技有限公司 | Method for separating waste polyphenylene sulfide from polytetrafluoroethylene blended dust removal bag |
| CN105538544A (en) * | 2015-12-31 | 2016-05-04 | 安徽省元琛环保科技有限公司 | Separation method of waste polyphenylene sulfide and polytetrafluoroethylene blended dust settling pockets |
| CN105666740A (en) * | 2016-03-01 | 2016-06-15 | 浙江理工大学 | Cleaning and recovering method for waste polytetrafluoroethylene and polyphenylene sulfide blended filter bag |
| CN105751403A (en) * | 2015-12-14 | 2016-07-13 | 安徽省元琛环保科技有限公司 | Method of recycling polyphenylene sulfide and PTFE waste filter materials |
| CN108642240A (en) * | 2018-05-18 | 2018-10-12 | 武汉钢铁有限公司 | A kind of hot-metal insulating coverture and preparation method using the preparation of waste and old dust-removal cloth-bag |
| CN111136832A (en) * | 2019-12-04 | 2020-05-12 | 中国纺织科学研究院有限公司 | Method and system for separating waste dust-removing filter bags containing PPS and PTFE |
| CN114770805A (en) * | 2022-03-01 | 2022-07-22 | 徐州市宝盛新田农业机械有限公司 | Agricultural plastic products waste recovery device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107738382B (en) * | 2017-12-04 | 2019-09-27 | 广东石油化工学院 | A kind of separation method of waste and old braiding fibrous material |
| CN107746222B (en) * | 2018-01-24 | 2020-05-12 | 华电电力科学研究院有限公司 | Recycling method of dust removal filter bag of coal-fired power plant |
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| CN1103874A (en) * | 1993-12-17 | 1995-06-21 | 化学工业部成都有机硅应用研究技术服务中心 | Recovering waste foam polystyrene by gel foam remoing method and regenerating foamable polystyrene |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353658A (en) * | 2014-11-05 | 2015-02-18 | 湖州格尔泰斯环保技术有限公司 | Waste PTFE dedusting filter-bag recycling method |
| CN104530704A (en) * | 2014-12-05 | 2015-04-22 | 中国纺织科学研究院 | Recycling method for waste PPS dedusting filter bag |
| CN105397935A (en) * | 2015-11-30 | 2016-03-16 | 安徽省元琛环保科技有限公司 | Method for separating waste polyphenylene sulfide from polytetrafluoroethylene blended dust removal bag |
| CN105751403A (en) * | 2015-12-14 | 2016-07-13 | 安徽省元琛环保科技有限公司 | Method of recycling polyphenylene sulfide and PTFE waste filter materials |
| CN105538544A (en) * | 2015-12-31 | 2016-05-04 | 安徽省元琛环保科技有限公司 | Separation method of waste polyphenylene sulfide and polytetrafluoroethylene blended dust settling pockets |
| CN105666740A (en) * | 2016-03-01 | 2016-06-15 | 浙江理工大学 | Cleaning and recovering method for waste polytetrafluoroethylene and polyphenylene sulfide blended filter bag |
| CN108642240A (en) * | 2018-05-18 | 2018-10-12 | 武汉钢铁有限公司 | A kind of hot-metal insulating coverture and preparation method using the preparation of waste and old dust-removal cloth-bag |
| CN111136832A (en) * | 2019-12-04 | 2020-05-12 | 中国纺织科学研究院有限公司 | Method and system for separating waste dust-removing filter bags containing PPS and PTFE |
| CN114770805A (en) * | 2022-03-01 | 2022-07-22 | 徐州市宝盛新田农业机械有限公司 | Agricultural plastic products waste recovery device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103144221A (en) | 2013-06-12 |
| CN103692576B (en) | 2016-05-18 |
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Effective date of registration: 20160719 Address after: 100005, Beijing, Beiqijia town of Changping District Tuan Tuan Village Patentee after: Shanchun Xiumei Ecological Environmental Engineering Co., Ltd. Address before: 100005, three, 908, 909, Henderson central building, No. 18, Jianguomen inner Avenue, Beijing, Dongcheng District Patentee before: Beijing Guoxing Wujia Polymer Fiber Regeneration Technology Co., Ltd. Patentee before: BEIJING GUOFA JIAMEI ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |