CN109529450A - Fabric enhances micropore aeroge screen pipe and its manufacturing method - Google Patents
Fabric enhances micropore aeroge screen pipe and its manufacturing method Download PDFInfo
- Publication number
- CN109529450A CN109529450A CN201811300569.4A CN201811300569A CN109529450A CN 109529450 A CN109529450 A CN 109529450A CN 201811300569 A CN201811300569 A CN 201811300569A CN 109529450 A CN109529450 A CN 109529450A
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- Prior art keywords
- aeroge
- micropore
- screen pipe
- fabric
- tube wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- 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
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
Abstract
The invention discloses fabric enhancing micropore aeroge screen pipe and its manufacturing method, which includes tube wall and package or coated in the micropore filtering film on the outside of tube wall, is lined with the woven base fabric of high-performance fiber among tube wall.Present invention material based on ethyl orthosilicate prepares fiber reinforced micro porous aeroge screen pipe by processes such as sol-gel-aging and dryings.Aeroge screen pipe manufacturing process of the present invention is short, and light weight, intensity is good, high temperature resistant, high to the filter efficiency of flue gas, and purified gas impurity concentration is low, meets the emission request of the newest announcement of country.The elimination object that tube wall is attached to after filtering removes simple, reusable after removing, long service life, and waste is made to obtain cycling and reutilization, meets the environmental protection concept of national green manufacture.
Description
Technical field
The invention belongs to filtering material technical fields, and in particular to a kind of fabric enhancing micropore aeroge screen pipe and
Its manufacturing method.
Background technique
Applied to filter material used in the operating conditions high temperature fume dust removal such as coal-burning boiler, cement, steel, waste incineration, chemical industry
Material generally uses the inorfils such as the high performance fibers such as polyimides, polytetrafluoroethylene (PTFE), polyphenylene sulfide, aramid fiber or glass for original
The short fibre of above-mentioned raw materials is laid on using homogeneous raw material by material, using woven or knitting process woven base fabric it is upper,
Under, reinforced and be made with needle thorn or the non-woven mode such as spun lacing, some kind filter material surfaces again through ptfe composite microporous barrier,
Above-mentioned filtrate is sewn into filter bag.Using the graded pore structure of filtrate, filtering, the separating effect of subparticle and gas are played.
Conventional filter bag weight is generally in 450-800g/ ㎡, and long-term use temperature is at 250 DEG C or so, 280 DEG C of instantaneous maximum operation (service) temperature.
Manufacturing method are as follows:
The filter bag of above-mentioned conventional preparation techniques production is using expensive high technical fibre, and dosage is more, and density is high, uses the time
It is short.Failure filter bag is discarded to cause resource largely to waste, easily formation secondary pollution.
Summary of the invention
The purpose of the invention is to short, the light weights, to flue gas that overcomes above-mentioned shortcoming to provide a kind of manufacturing process
Filter efficiency is high, and the low fabric of purified gas impurity concentration enhances micropore aeroge screen pipe.It is attached to after filtering
The elimination object of tube wall removes simple, reusable after removing, long service life.
It is a still further object of the present invention to provide the preparation methods of above-mentioned fabric enhancing micropore aeroge screen pipe.
The purpose of the present invention is what is be accomplished by the following way:
A kind of fabric enhancing micropore aeroge screen pipe, including tube wall and package or coated in the micropore on the outside of tube wall
Filter membrane is lined with the woven base fabric of high-performance fiber among tube wall.Micropore filtering film is preferably PTFE or ceramic microporous membranes.This hair
It is bright to be lined with regenerating high-performance fiber among aeroge screen pipe or base fabric caused by conventional high-performance fiber is knitted, as aeroge
The reinforcing material of screen pipe plays the role of the intensity for enhancing screen pipe, the compound one layer of micropore filtering film of the outer layer of screen pipe, to mention
Exceed the filter efficiency of chimney filter.
It is preferred that above-mentioned tube wall with a thickness of 0.5-1 ㎝.
It is preferred that the thickness 0.5-2 ㎜ of above-mentioned base fabric.
It is preferred that above-mentioned micropore filtering film with a thickness of 0.1-0.3 ㎜.
It is preferred that the quality of above-mentioned aeroge screen pipe is 100-250g/ ㎡.
It is preferred that the internal diameter of above-mentioned aeroge screen pipe is 10-20 ㎝.
It is preferred that the pore diameter of above-mentioned micropore filtering film is 15-25nm.
The manufacturing method of above-mentioned fabric enhancing micropore aeroge screen pipe the following steps are included:
(1) colloidal sol: ethyl orthosilicate being added in the mixed liquor of dehydrated alcohol and water, stirred evenly, and adjusts pH3-4, shape
At silica solution；Wherein, the ratio of ethyl orthosilicate, dehydrated alcohol and water is 1:5:4；
(2) gel: being vertically put into the base fabric after being formed in bushing forming machine, and silica solution injection molding machine is adjusted
PH7.6-8.5 forms aeroge；
(3) aging: ethyl alcohol is added in the aeroge into molding machine and carries out aging, to enhance aeroge skeleton, aging temperature
50-60 DEG C of degree, ageing time 20-24hr；
(4) it replaces: after aging, replacing to obtain gel tube through n-hexane；
(5) dry: by the gel tube after displacement at 60-110 DEG C of temperature constant pressure and dry, drying time 1-2hr；
(6) micropore filtering film overlay film: is coated or is wrapped up gel tube extexine after the drying.
It is preferred that adjusting PH to 3-4 with hydrochloric acid in step (1).PH to 7.6-8.5 is adjusted with ammonium hydroxide in step (2).Always
The ethyl alcohol used when change is preferably dehydrated alcohol, and dosage is preferably 2-3 times of aeroge weight.
Aeroge after above-mentioned aging is replaced through n-hexane, and the specific steps are the aeroge after aging is abundant through n-hexane
It embathes, ethyl alcohol and moisture in gel is made to be replaced to obtain gel tube by n-hexane.
The above-mentioned woven base fabric of high-performance fiber is preferably to discard regenerating high-performance fiber or the life after filtrate recovery processing
Fiber or primary high-performance fiber of the leftover pieces generated when producing high-performance filtrate after shredding, if polytetrafluoroethylene fibre is to increase
Strong material.
Beneficial effects of the present invention compared with the prior art: aeroge screen pipe of the present invention is than conventional high temperature resistant filter bag system
It is short to make process, light weight, intensity is good, high temperature resistant, and high to the filter efficiency of flue gas, purified gas impurity concentration is low, can accord with
Close the emission request of the newest announcement of country.The elimination object that tube wall is attached to after filtering is removed simply, reusable after removing, is made
It is long with the service life.Moreover, the present invention can waste utilization, especially with discard filtrate recovery processing after regenerating high-performance fiber or
Fiber and primary high-performance fiber of the leftover pieces generated when producing high-performance filtrate after shredding, such as polytetrafluoroethylene (PTFE)
Fiber is reinforcing material, the material based on ethyl orthosilicate, entirely different with the currently used filtrate of dust removal and filtration industry
Production method, prepare fiber reinforced micro porous aeroge screen pipe by processes such as sol-gel-aging and dryings.Make to discard
Object obtains cycling and reutilization, meets the environmental protection concept of national green manufacture.
Detailed description of the invention
Fig. 1 is the structure chart of aeroge screen pipe.
In figure, 1 is base fabric, and 2 be tube wall, and 3 be micropore filtering film.
Specific embodiment
The invention will be further described with reference to the accompanying drawing and by embodiment:
Embodiment 1
As shown in Figure 1, a kind of fabric enhances micropore aeroge screen pipe, which includes 2 He of tube wall
Package or coated in the PTFE micropore filtering film 3 on the outside of tube wall, is lined with the woven base fabric 1 of high-performance fiber among tube wall 2.Tube wall
Thickness is 1 ㎝, 1 ㎜ of thickness of base fabric, PTFE micropore filtering film with a thickness of 0.1 ㎜, the internal diameter of aeroge screen pipe is 10 ㎝, micro-
The pore diameter of hole filter membrane is 15nm.
Steps are as follows for the manufacturing method of above-mentioned micropore aeroge screen pipe:
(1) colloidal sol: ethyl orthosilicate is added in the mixed liquor of dehydrated alcohol and water, stirs evenly, is adjusted with hydrochloric acid
The ratio of pH3-4, formation silica solution, ethyl orthosilicate, dehydrated alcohol and water is 1:5:4；
(2) gel: it is vertically put into the base fabric after being formed among the bushing forming machine tube wall, by silica solution injection moulding
Machine adjusts pH7.6-8.5 with ammonium hydroxide, forms aeroge；The base fabric after being formed used are as follows: material PTFE long filament, line density
500D, base fabric quality 90g/ ㎡, 137 pieces/inch of warp thread, 54 pieces/inch of weft yarn, through to strength 800N/5 ㎝, broadwise strength
400N/5㎝。
(3) aging: the aeroge into molding machine is added 2 times of weight dehydrated alcohols and carries out aging, to enhance aeroge bone
Frame, 55-60 DEG C of aging temperature, ageing time r for 24 hours；
(4) it replaces: after aging, sufficiently being embathed through n-hexane, set ethyl alcohol and moisture in aeroge by n-hexane
Get gel tube in return；
(5) dry: the gel tube after displacement enters drying machine, the constant pressure and dry at 90 DEG C of temperature, drying time 2hr；
(6) overlay film: the gel tube after dry carries out overlay film on laminating machine, and micropore filtering film is open and flat, is fitted in no crape
Aeroge tube wall extexine.
The weight of above-mentioned aeroge screen pipe is 120g/ ㎡, strength: longitudinal 900N/5 ㎝, lateral 450N/5 ㎝.For a long time
300 DEG C of high temperature resistant, 350 DEG C of instantaneous high temperature resistant.
Embodiment 2
As shown in Figure 1, a kind of fabric enhances micropore aeroge screen pipe, which includes 2 He of tube wall
Package or coated in the ceramic capillary filter membrane 3 on the outside of tube wall, is lined with the woven base fabric 1 of high-performance fiber among tube wall 2.Tube wall
Thickness is 0.5 ㎝, 2 ㎜ of thickness of base fabric, ceramic capillary filter membrane with a thickness of 0.3 ㎜, the internal diameter of aeroge screen pipe is 15 ㎝,
Ceramic capillary filter membrane aperture diameter is 25nm.
Steps are as follows for the manufacturing method of above-mentioned micropore aeroge screen pipe:
(1) colloidal sol: ethyl orthosilicate is added in the mixed liquor of dehydrated alcohol and water, stirs evenly, is adjusted with hydrochloric acid
The ratio of pH3-4, formation silica solution, ethyl orthosilicate, dehydrated alcohol and water is 1:5:4；
(2) gel: it is vertically put into the base fabric after being formed among the bushing forming machine tube wall, by silica solution injection moulding
Machine adjusts pH7.6-8.5 with ammonium hydroxide, forms aeroge；The base fabric after being formed used are as follows: military rock long filament, line density 300D,
Base fabric quality 80g/ ㎡, 80 pieces/inch of warp thread, 50 pieces/inch of weft yarn, through to strength 900N/5 ㎝, broadwise strength 500N/5 ㎝.
(3) aging: the dehydrated alcohol that 2 times of weight are added in the aeroge into molding machine carries out aging, to enhance aeroge
Skeleton, 50-55 DEG C of aging temperature, ageing time r for 24 hours；
(4) it replaces: after aging, sufficiently being embathed through n-hexane, set ethyl alcohol and moisture in aeroge by n-hexane
Get gel tube in return；
(5) dry: the gel tube after displacement enters drying machine, the constant pressure and dry at 100-110 DEG C of temperature, drying time
1-2hr；
(6) overlay film: the gel tube after dry carries out overlay film on laminating machine, and ceramic capillary filter membrane is open and flat, pastes to no crape
It closes in aeroge outer surface of tube wall.
The weight of above-mentioned aeroge screen pipe is 120g/ ㎡, strength: longitudinal 900N/5 ㎝, lateral 500N/5 ㎝.For a long time
300 DEG C of high temperature resistant of (1 year or more), 350 DEG C of instantaneous high temperature resistant.
Above-mentioned aeroge screen pipe is in use, the ceramic capillary filter membrane of tube wall outer layer plays the role of gradient filtration, pole
Subtle particle accumulation is accumulated in outer layer in the surface of filter membrane, the dust or dust of larger particles.Outer layer dust accumulates to one
Fixed thickness can voluntarily fall off, and fine particle layer surface is accumulated into larger particles dust again.
The embodiment aeroge screen pipe normal use time was up to 4 years or more.
Claims (10)
1. a kind of fabric enhances micropore aeroge screen pipe, it is characterised in that the aeroge screen pipe include tube wall (2) and
It wraps up or coated in the micropore filtering film (3) on the outside of tube wall, tube wall (2) is intermediate to be lined with the woven base fabric of high-performance fiber (1).
2. fabric according to claim 1 enhances micropore aeroge screen pipe, it is characterised in that the thickness of tube wall (2)
For 0.5-1 ㎝.
3. fabric according to claim 1 enhances micropore aeroge screen pipe, it is characterised in that the thickness of base fabric (1)
0.5-2 ㎜.
4. fabric according to claim 1 enhances micropore aeroge screen pipe, it is characterised in that micropore filtering film (3)
With a thickness of 0.1-0.3 ㎜.
5. fabric according to claim 1 enhances micropore aeroge screen pipe, it is characterised in that micropore filtering film
Pore diameter is 15-25nm.
6. fabric according to claim 1 enhances micropore aeroge screen pipe, it is characterised in that aeroge screen pipe
Internal diameter be 10-20 ㎝.
7. a kind of manufacture of the enhancing micropore aeroge screen pipe of fabric described in claim 1-6 any one claim
Method, it is characterised in that method includes the following steps:
(1) colloidal sol: ethyl orthosilicate being added in the mixed liquor of dehydrated alcohol and water, stirred evenly, and adjusts pH3-4, forms silicon
Colloidal sol；Wherein, the volume ratio of ethyl orthosilicate, dehydrated alcohol and water is 1:5:4；
(2) gel: being vertically put into the base fabric after being formed in bushing forming machine, and silica solution injection molding machine is adjusted
PH7.6-8.5 forms aeroge；
(3) aging: addition ethyl alcohol progress aging in the aeroge into molding machine, 50-60 DEG C of aging temperature, ageing time 20-
24hr；
(4) it replaces: after aging, replacing to obtain gel tube through n-hexane；
(5) dry: by the gel tube after displacement at 60-110 DEG C of temperature constant pressure and dry, drying time 1-2hr；
(6) micropore filtering film overlay film: is coated or is wrapped up gel tube wall extexine after the drying.
8. the manufacturing method of fabric enhancing micropore aeroge screen pipe according to claim 7, it is characterised in that
PH to 3-4 is adjusted with hydrochloric acid in step (1)；PH to 7.6-8.5 is adjusted with ammonium hydroxide in step (2).
9. the manufacturing method of fabric enhancing micropore aeroge screen pipe according to claim 7, it is characterised in that institute
The base fabric stated is opened with discarding the leftover pieces generated when the regenerating high-performance fiber after filtrate recovery processing or production high-performance filtrate
Fiber or primary high-performance fiber after pine.
10. the manufacturing method of fabric enhancing micropore aeroge screen pipe according to claim 9, it is characterised in that institute
The base fabric stated is polytetrafluoroethylene fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300569.4A CN109529450A (en) | 2018-11-02 | 2018-11-02 | Fabric enhances micropore aeroge screen pipe and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300569.4A CN109529450A (en) | 2018-11-02 | 2018-11-02 | Fabric enhances micropore aeroge screen pipe and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109529450A true CN109529450A (en) | 2019-03-29 |
Family
ID=65845995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811300569.4A Pending CN109529450A (en) | 2018-11-02 | 2018-11-02 | Fabric enhances micropore aeroge screen pipe and its manufacturing method |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2474211Y (en) * | 2001-04-04 | 2002-01-30 | 华南理工大学 | Air clarifying device |
| CN103435055A (en) * | 2013-06-29 | 2013-12-11 | 浙江工业大学 | Method for preparing low density silica aerogel under normal pressure |
| CN204107221U (en) * | 2014-10-15 | 2015-01-21 | 青岛路博宏业环保技术开发有限公司 | Central authorities' smoke and dust purifier |
| CN204952512U (en) * | 2015-08-27 | 2016-01-13 | 云南蓝澈科技有限公司 | Board -like filter core dust remover of board -like filter core of tectorial membrane and tectorial membrane |
| CN206064031U (en) * | 2016-09-30 | 2017-04-05 | 江苏久朗高科技股份有限公司 | A kind of embrane method fume recovery system of extruding pelletization process |
| CN107216115A (en) * | 2017-06-26 | 2017-09-29 | 南京工业大学 | A kind of PTFE fiber cloth composite graphite alkene SiO2The preparation method of aeroge |
| CN209317302U (en) * | 2018-11-02 | 2019-08-30 | 江苏华跃纺织新材料科技股份有限公司 | Fabric enhances micropore aeroge screen pipe |
-
2018
- 2018-11-02 CN CN201811300569.4A patent/CN109529450A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2474211Y (en) * | 2001-04-04 | 2002-01-30 | 华南理工大学 | Air clarifying device |
| CN103435055A (en) * | 2013-06-29 | 2013-12-11 | 浙江工业大学 | Method for preparing low density silica aerogel under normal pressure |
| CN204107221U (en) * | 2014-10-15 | 2015-01-21 | 青岛路博宏业环保技术开发有限公司 | Central authorities' smoke and dust purifier |
| CN204952512U (en) * | 2015-08-27 | 2016-01-13 | 云南蓝澈科技有限公司 | Board -like filter core dust remover of board -like filter core of tectorial membrane and tectorial membrane |
| CN206064031U (en) * | 2016-09-30 | 2017-04-05 | 江苏久朗高科技股份有限公司 | A kind of embrane method fume recovery system of extruding pelletization process |
| CN107216115A (en) * | 2017-06-26 | 2017-09-29 | 南京工业大学 | A kind of PTFE fiber cloth composite graphite alkene SiO2The preparation method of aeroge |
| CN209317302U (en) * | 2018-11-02 | 2019-08-30 | 江苏华跃纺织新材料科技股份有限公司 | Fabric enhances micropore aeroge screen pipe |
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