CN109437829A - The preparation method of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material - Google Patents
The preparation method of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material Download PDFInfo
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- CN109437829A CN109437829A CN201811289398.XA CN201811289398A CN109437829A CN 109437829 A CN109437829 A CN 109437829A CN 201811289398 A CN201811289398 A CN 201811289398A CN 109437829 A CN109437829 A CN 109437829A
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- Prior art keywords
- filter bag
- filter
- pocket material
- reinforcement base
- fiber reinforcement
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
- C04B30/02—Compositions for artificial stone, not containing binders containing fibrous materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
-
- 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
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of preparation methods of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material, and this method is that the filter bag of broken invalid is cleaned multiple times, and then cutting and crushing, obtains high-performance regenerated fiber；Single or multi-functional silicon source is dissolved in ethanol water, solution is first tuned into acidity, is uniformly mixed, is hydrolyzed tetraethyl orthosilicate, sequentially add silane coupling agent, adhesive, then adjusts pH value of solution as alkalinity, solution polycondensation is at colloidal sol；Aforementioned high-performance regenerated fiber is added in colloidal sol, is uniformly mixed, seal aging, solvent displacement is drying to obtain aeroge filter pocket material.Preparation method of the present invention is simple, while the filter bag after preparation has better cost performance than filter bag prepared by original material, it is often more important that makes changing rejected material to useful resource, realizes the environmental protection concept for the green manufacturing that country is advocated.
Description
Technical field
The invention belongs to filtering material fields, are related to a kind of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter
The preparation method of bag material.
Background technique
Since reform and opening-up, while China undergoes national economy high speed development, severe environmental problem has also been brought.Closely
In the past few years, a wide range of long-time haze in China, atmosphere pollution progress into public view, and various circles of society give extensive pass
Note.Atmosphere pollution not only seriously affects the life and human health of the people, also beats police to the existing production and consumption mode in China
Clock accelerates environmental improvement, changes economized form, extremely urgent.Filtering and isolation technics be control atmosphere pollution important means it
Sack cleaner in one, especially filtering textile especially can reach fine solid particle to the collection rate of PM10, PM2.5
99.9%, become the administration way of domestic and international atmospheric dust pollution first choice.
Nowadays, the more serious industrial circle of China overwhelming majority dust has all used environmental protection equipment, is largely bag
Formula deduster, general 2-3 replace a filter bag, and longest can only also use 4 years, and the filter bag of broken invalid becomes waste
Burn or landfill disposal.For filter bag material there are many kinds of class, most common have a synthetic fibers such as terylene, it is resistant to high temperature have PPS,
High technical fibres such as P84, PTFE, aramid fiber etc., synthetic fibers and high technical fibre are embedded in underground and are difficult to rot for a long time, hold
Easily cause underground water and soil pollution serious.Especially contain for the failure filter bag in non-ferrous metal and chemical company micro
The toxic minerals such as arsenic, fluorine, antimony, chromium, calcium are far longer than the land area that hole is buried to the destruction of subterranean resource.Number display, preceding
Domestic filtrate yield reaches hundreds of millions meters or more within several years, and it is very more to eliminate the damaged filter bag quantity got off every year.With land resource
The problem of increasingly anxiety, environmental pollution, causes the great attention of people, how to handle these waste and old and damaged filter bags, research and development one
The method of the recyclable regeneration broken invalid filter bag of kind is the art problem in the urgent need to address.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of broken invalid filter bag proposed returns
Receive the technology of preparing of regenerated fiber enhancing base aeroge filter pocket material.
The purpose of the present invention is what is be accomplished by the following way:
A kind of preparation method of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material, it is characterised in that
Method includes the following steps:
(1) filter bag of broken invalid is cleaned multiple times, then cutting and crushing, obtains high-performance regenerated fiber；
(2) single or multi-functional silicon source is dissolved in ethanol water, solution is first tuned into acidity, be uniformly mixed, then according to
Secondary addition silane coupling agent, adhesive, then pH value of solution is adjusted as alkalinity, solution polycondensation is at colloidal sol；
(3) high-performance regenerated fiber described in step (1) is added in colloidal sol, is uniformly mixed, seal aging, solvent displacement,
It is drying to obtain aeroge filter pocket material.
It is above-mentioned that solution is first tuned into acidity, pH 4-6；Adjust pH value of solution again as alkalinity, pH 8-10 makes under this condition
The speed for being polycondensed into colloidal sol is further speeded up.
The cutting and crushing is that cleaned filter bag will be longitudinally, laterally cut into 2 × 2 ㎝ fritters, through shredding at
Short fibre, then short fibre is milled, regenerated fiber short flannel is obtained until almost crushing；
The broken rear fiber is short flannel shape, flocculence, no obvious strip fiber appearance.
The cleaning is that the filter bag of broken invalid is cleaned multiple times, until pollutants removal rate reach 98% with
On.
The high-performance regenerated fiber additional amount is to contain high-performance regenerated fiber 3-5g in every 100ml colloidal sol.
The volume ratio of the single or multi-functional silicon source and ethanol water is 10-50:90.
It is preferred that single or multi-functional silicon source is dissolved in ethanol water (VTEOS:VEtOH:VH2O=10-50:50:40).
The ethyl alcohol is preferably dehydrated alcohol.
The single or multi-functional silicon source is positive tetraethyl orthosilicate, waterglass or methyl orthosilicate.
The high-performance regenerated fiber includes polytetrafluoroethylene fibre (PTFE), polyphenylene sulfide (PPS) fiber, polyimides
(P84) one or more of fiber.
The seal aging time is 3-7 days, forms stable structure；
The silane coupling agent includes one or more of in KH550, KH560, KH570, KH592.
The silane coupling agent is 1-10%, preferably 3-9% with respect to the ratio that is mixed into of high-performance regenerated fiber quality.
Described adhesive is one or more of polyethyleneimine (PEI), polyurethane, polyvinyl acetate；Adhesive phase
The ratio that is mixed into high-performance regenerated fiber quality is 1-10%, preferably 3-9%.
The drying mode includes drying, freeze-drying, one or more of drying modes such as supercritical drying.
The suitable temperature of drying is 30 DEG C -110 DEG C, preferably 50 DEG C -90 DEG C, more preferable 60 DEG C -80 DEG C.Drying time is
4h-24h, preferably 10h-18h, more preferable 12h-14h.
Depending on above-mentioned fiber wash number is because of kinds of fibers and pollution level, appropriate cleaning agent can be used, but cannot be right
The performance of fiber has larger impact.
The fiber crusher used when broken includes cutting machine, pulverizer, ball mill etc., but being not limited to these being capable of general
The machine that fiber crushes.It should be velvet shape, flocculence after fiber is broken, no obvious strip fiber occurs.
The preparation of silica hydrogel of the present invention uses sol-gel method, can also use other feasible sides
Method.Solution is first specially tuned into acid pH=4~6, stir, until tetraethyl orthosilicate completely it is molten in water, stand, make just
Tetraethyl orthosilicate hydrolysis, then pH value of solution=8~10 are adjusted, solution polycondensation is at colloidal sol.
Beneficial effects of the present invention compared with the prior art: the present invention by by the filter bag waste utilization of waste and old breakage, into
Row cleaning removal of impurities, crushes, and then by soda acid two-step catalysis sol-gal process, silane coupling agent and adhesive is added, preparation is fine
Dimension enhancing base aeroge filter pocket material.Existing failure filter bag regeneration techniques mostly use regenerated fiber to carry out spinning again, and weaving is new
Filter bag, generally use such method, process is cumbersome and cost is high, and preparation method of the present invention and process are relatively simple,
Convenient for subsequent industrialization large scale preparation, while the filter bag after preparation has better sexual valence than filter bag prepared by original material
Than, it is often more important that make changing rejected material to useful resource, realizes the environmental protection concept for the green manufacturing that country is advocated.
Detailed description of the invention
Fig. 1 is smashed reclaiming fiber.
Fig. 2 is to have prepared reclaiming fiber reinforcement base aeroge filter pocket material pictorial diagram.
Specific embodiment
Below by way of specific embodiment, invention is further explained:
Embodiment 1
Damaged polytetrafluoroethylene fibre (PTFE) filter bag is patted, removes surface dust and particle, then filter bag
It is cleaned multiple times into the water, until without obvious impurity in water；Filter bag is longitudinally, laterally cut into length and width with cutting machine
Small cloth no more than 2 centimetres；Small cloth is put into pulverizer and is crushed, rate 5500rpm, 6 times repeatedly；At 250 milliliters
10 milliliters of tetraethyl orthosilicates are added in beaker, then weigh 50 milliliters of ethyl alcohol and 40 milliliters of water with 100 milliliters of graduated cylinders, mixing is equal
It is even, 100 microlitres of hydrochloric acid conditioning solution pH value 4~6 are drawn with liquid-transfering gun, above-mentioned solution are covered with preservative film, 350 revs/min
Clock magnetic agitation 12 hours；0.25 gram of KH550 is added to stir 2 hours, 0.25 gram of PEI is added and stirs 2 hours；It is drawn with liquid-transfering gun
120 microlitres of ammonium hydroxide, are added in the solution prepared, adjust solution ph=8~10, continue magnetic agitation, molten after 8 minutes
Liquid becomes viscous shape, is added polytetrafluoroethylene (PTFE) short flannel 3g, and mechanical stirring is to being uniformly mixed；The gel preservative film mixed is close
Envelope, shady place stand 3 days；Supernatant liquor after standing is poured out, is added about 100 milliliters of n-hexane, is put into baking oven, 60 DEG C of progress
Solvent displacement about 6 hours every time, is replaced 3 times repeatedly；Product is put into mold, the product in extrusion die reaches
Product is placed on shady place and stands 12h by about 15% water content；Insert product again, until fill up mold, without obvious crackle,
Gap is placed on shady place and stands 12h；Product is put into baking oven, drying 8 hours under 60 DEG C of normal temperature and pressures, demoulding is to get fiber increasing
Strong basis aeroge filter pocket material.
Fiber reinforcement base aeroge filter pocket material performance:
Density: 90g/ ㎡；Thickness: 6 ㎜；Intensity: longitudinal: 450N/5 ㎝, laterally: 400N/5 ㎝.
Embodiment 2
Damaged polyimides (P84) fiber filter bag is patted, removes surface dust and particle, then filter bag is put into
It is cleaned multiple times in water, until without obvious impurity in water；Filter bag is cut into the small cloth that length and width are no more than 2 centimetres with cutting machine
Block；Small cloth is put into pulverizer and is crushed, rate 5500rpm, 6 times repeatedly；40 milliliters are added in 250 milliliters of beakers
Then methyl orthosilicate weighs 50 milliliters of dehydrated alcohols and 40 milliliters of water with 100 milliliters of graduated cylinders, be uniformly mixed, inhaled with liquid-transfering gun
Taking 100 microlitres of hydrochloric acid conditioning solution pH values is 4~6, above-mentioned solution is covered with preservative film, 350 revs/min of magnetic agitations
12 hours；0.25 gram of KH550 is added to stir 2 hours, 0.25 gram of PEI is added and stirs 2 hours；120 microlitres are drawn with liquid-transfering gun
15% sodium hydroxide, is added in the solution prepared, adjusts solution ph 8~10, continues magnetic agitation, after ten minutes
Solution becomes viscous shape, is added polytetrafluoroethylene (PTFE) short flannel 3g, and mechanical stirring is to being uniformly mixed；The gel preservative film mixed is close
Envelope, shady place stand 3 days；Supernatant liquor after standing is poured out, about 100 milliliters of acetone is added, is put into baking oven, 60 DEG C of progress are molten
Agent displacement about 6 hours every time, is replaced 3 times repeatedly；Product is put into mold, the product in extrusion die reaches about
Product is placed on shady place and stands 12h by 15% water content；Product is inserted again, until filling up mold, no obvious crackle, seam
Gap is placed on shady place and stands 12h；Product is taken out, with liquid nitrogen frozen 20min, is then placed in freeze drier freeze-drying 24
Hour, it demoulds to get fiber reinforcement base aeroge filter pocket material.
Fiber reinforcement base aeroge filter pocket material performance:
Density: 110g/ ㎡；Thickness: 6.5 ㎜；Intensity: longitudinal: 500N/5 ㎝, laterally: 400N/5 ㎝.
Embodiment 3
Damaged polyphenylene sulfide (PPS) fiber filter bag is patted, removes surface dust and particle, then filter bag is put into
It is cleaned repeatedly in water, until without obvious impurity in water；It is small no more than 2 centimetres that filter bag with fibre cutting machine is cut into length and width
Cloth；Small cloth is put into pulverizer and is crushed, rate 5500rpm, 7 times repeatedly；50 milliliters are added in 250 milliliters of beakers
Then tetraethyl orthosilicate weighs 50 milliliters of ethyl alcohol and 40 milliliters of water with 100 milliliters of graduated cylinders, be uniformly mixed, drawn with liquid-transfering gun
100 microlitres of sulfuric acid regulation solution pH value are 4-6, above-mentioned solution are covered with preservative film, 350 turns of magnetic agitations, 12 hours；
0.25 gram of KH550 is added to stir 2 hours, 0.25 gram of polyvinyl acetate is added and stirs 2 hours；120 microlitres are drawn with liquid-transfering gun
Ammonium hydroxide is added in the solution prepared, and adjusting solution ph is 8-10, continues magnetic agitation, and about solution becomes after ten minutes
It is thick, be added polyphenylene sulfide short flannel 3g, mechanical stirring to be uniformly mixed；The gel mixed is sealed with preservative film, it is shady and cool
Place stands 7 days；Supernatant liquor after standing is poured out, about 100 milliliters of n-hexane is added, is put into baking oven, 60 DEG C of progress solvents are set
It changes, about 6 hours every time, replaces 3 times repeatedly；Product is put into specified mold, the product in extrusion die reaches about
Product is placed on shady place and stands 12h by 15% water content；Product is inserted again, until filling up mold, no obvious crackle, seam
Gap is placed on shady place and stands 12h；Product is taken out, with liquid nitrogen frozen 20min, is then placed in freeze drier freeze-drying 24
Hour, it is demoulded using particular tool to get fiber reinforcement base aeroge filter pocket material.
Fiber reinforcement base aeroge filter pocket material performance:
Density: 1150g/ ㎡；Thickness: 7 ㎜；Intensity: longitudinal: 500N/5 ㎝, laterally: 500N/5 ㎝.
Embodiment 4
Damaged polytetrafluoroethylene (PTFE) (PTFE) fiber filter bag is patted, removes surface dust and particle, then filter bag
It is cleaned repeatedly into the water, until without obvious impurity in water；Filter bag is cut into length and width no more than 2 centimetres with fibre cutting machine
Small cloth；Small cloth is put into pulverizer and is crushed, rate 5500rpm, 6 times repeatedly；10 are added in 250 milliliters of beakers
Milliliter waterglass, then weighs 50 milliliters of ethyl alcohol and 40 milliliters of water with 100 milliliters of graduated cylinders, is uniformly mixed, is drawn with liquid-transfering gun
100 microlitres of hydrochloric acid conditioning solution pH value 4-6 cover above-mentioned solution with preservative film, 350 turns magnetic agitation 12 hours；It is added
0.2 gram of KH550 is stirred 2 hours, and 0.2 gram of polyurethane is added and stirs 2 hours；120 microlitres of ammonium hydroxide are drawn with liquid-transfering gun, are added to
In the solution prepared, solution ph 8-10 is adjusted, continues magnetic agitation, about solution becomes viscous shape after ten minutes, is added poly-
Tetrafluoroethene short flannel 3g, mechanical stirring to be uniformly mixed；The gel mixed is sealed with preservative film, shady place stands 3 days；It will
Supernatant liquor after standing is poured out, and is added about 100 milliliters of methanol, is put into baking oven, 60 DEG C of progress solvent displacements, and about 6 hours every time,
It replaces 3 times repeatedly；Product is put into specified mold, the product in extrusion die reaches about 10% water content, will produce
Object is placed on shady place and stands 12h；Product is inserted again, until filling up mold, without obvious crackle, gap, is placed on shady place standing
12h；Product is taken out, with liquid nitrogen frozen 20min, freeze drier is then placed in and is freeze-dried 20 hours, use particular tool
Demoulding is to get fiber reinforcement base aeroge filter pocket material.
Density: 90g/ ㎡；Thickness: 6 ㎜；Intensity: longitudinal: 450N/5 ㎝, laterally: 400N/5 ㎝.
Claims (10)
1. a kind of preparation method of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material, it is characterised in that should
Method the following steps are included:
(1) filter bag of broken invalid is cleaned multiple times, then cutting and crushing, obtains high-performance regenerated fiber；
(2) single or multi-functional silicon source is dissolved in ethanol water, solution is first tuned into acidity, be uniformly mixed, then successively added
Enter silane coupling agent, adhesive, then adjust pH value of solution as alkalinity, solution polycondensation is at colloidal sol；
(3) high-performance regenerated fiber described in step (1) is added in colloidal sol, is uniformly mixed, seal aging, solvent displacement is dry
Up to aeroge filter pocket material.
2. the preparation side of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material according to claim 1
Method, it is characterised in that the cleaning is be cleaned multiple times by the filter bag of broken invalid until pollutants removal rate reaches 98%
More than.
3. the preparation side of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material according to claim 1
Method, it is characterised in that the high-performance regenerated fiber additional amount is to contain high-performance regenerated fiber 3-5g in every 100ml colloidal sol.
4. the preparation side of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material according to claim 1
Method, it is characterised in that the volume ratio of the single or multi-functional silicon source and ethanol water is 10-50:90.
5. the preparation side of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material according to claim 4
Method, it is characterised in that the single or multi-functional silicon source is positive tetraethyl orthosilicate, waterglass or methyl orthosilicate.
6. the preparation side of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material according to claim 1
Method, it is characterised in that the high-performance regenerated fiber includes polytetrafluoroethylene fibre, in polyphenylene sulfide fibre, polyimide fiber
One or more.
7. the preparation side of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material according to claim 1
Method, it is characterised in that the seal aging time is 3-7 days.
8. the preparation side of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material according to claim 1
Method, it is characterised in that the silane coupling agent includes one or more of in KH550, KH560, KH570, KH592.
9. the preparation side of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material according to claim 1
Method, it is characterised in that the silane coupling agent is 1%-10% with respect to the ratio that is mixed into of high-performance regenerated fiber quality, preferably
3%-9%.
10. the preparation of broken invalid filter bag reclaiming fiber reinforcement base aeroge filter pocket material according to claim 1
Method, it is characterised in that described adhesive is one or more of polyethyleneimine, polyurethane, polyvinyl acetate；Adhesive
The ratio that is mixed into of opposite high-performance regenerated fiber quality is 1%-10%, preferably 3%-9%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110898548A (en) * | 2019-12-09 | 2020-03-24 | 天津大学 | Waste filter bag recycling machine |
| CN114804817A (en) * | 2022-04-11 | 2022-07-29 | 厦门中创环保科技股份有限公司 | Preparation method of efficient aerogel thermal insulation material |
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| CN114804817A (en) * | 2022-04-11 | 2022-07-29 | 厦门中创环保科技股份有限公司 | Preparation method of efficient aerogel thermal insulation material |
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