CN102350132A - Processing method of novel microporous aluminum filtering material - Google Patents
Processing method of novel microporous aluminum filtering material Download PDFInfo
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- CN102350132A CN102350132A CN2011102492261A CN201110249226A CN102350132A CN 102350132 A CN102350132 A CN 102350132A CN 2011102492261 A CN2011102492261 A CN 2011102492261A CN 201110249226 A CN201110249226 A CN 201110249226A CN 102350132 A CN102350132 A CN 102350132A
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Abstract
The invention discloses a processing method of a novel microporous aluminum filtering material. According to the invention, a common pure aluminum plate is heated in a high-temperature furnace until a melting point is approached; industrial sodium chloride powdery salt with a size of 200 to 300 meshes and a temperature of 650 to 700 DEG C is uniformly sprayed onto the heated aluminum plate, such that the powdery salt is directly stuck on the aluminum plate. The aluminum plate is rolled, such that the sodium chloride powdery salt is pressed into the aluminum plate, and an aluminum plate with a pore forming agent sodium chloride powdery salt is formed. The aluminum plate is cooled, and is placed in a dissolving tank, such that the sodium chloride powdery salt is dissolved, and the aluminum plate is in a microporous structure. A poly(tetrafluoroethylene) emulsion is sprayed onto the surface of the aluminum plate, such that a poly(tetrafluoroethylene) film is coated on the surfaces of the cavity walls of the micropores. The porous aluminum plate is dried by baking, such that the novel microporous aluminum filtering material is obtained. Because a poly(tetrafluoroethylene) film is coated on micropores microporous aluminum filtering material, the material has good hydrophobicity and pollution resistance, and provides good protective effects for preventing aluminum from being oxidized and corroded. With the material, the separation efficiency of filtration is improved, the filtration resistance is reduced, and the filtration throughput is improved.
Description
Technical field
The present invention relates to a kind of processing method of novel filter material, refer to that specifically a kind of is the novel filter material processing method of primary raw material with common pure aluminum plate.
Background technology
Sack cleaner not only has good capture effect to dust; And be aided with measures necessary and can also handle some poisonous gases; Be stranded this; Obtained widely using at many industrial circles, become air conservation, improved working conditions, reclaim the efficient apparatus of aspects such as useful material and protection electromechanical equipment.But, find also that by inquiry the effect of some sack cleaner is not ideal enough, as concentration of emission is high, resistance is big, maintenance task is heavy etc.; Recognize that through analyzing with historical experience and lessons sack cleaner has only when main frame and the concrete condition selected for use and adapts, key is the control appliance that is equipped with qualified filtrate and implements the advanced person, can obtain efficient low-consume and safe and reliable operational effect.Though sack cleaner structurally has a great difference; But they adopt; China's widely used main filtering material at present is nonwoven needle punched blanket class; Especially in high-temperature flue gas is administered; Main tens of kinds of PPS, P84, polytetrafluoroethylene (PTFE) mixed cloth and glass filter cloth, fiberglass needled mat and the composite filtering materials etc. that adopt; Specification, face kind and quality are deposited a certain distance with comparing abroad, often can not satisfy the needs of working condition, have limited the scope of application of sack cleaner.Subject matter has:
With the polyster fibre is that 208 flannelettes, terylene needle punched blanket, 729 filter clothes that raw material are produced can only be in safe handling below 120 ℃, and the content that is processed gas can not be too high, otherwise stick with paste bag easily, the deashing difficulty; The rate of filtration is lower, and energy consumption is high.If adopt glass filter bag or high temperature resistance filtration material (PPS, P84, polytetrafluoroethylene (PTFE) mixed cloth) in the last few years, also can only use, and be no more than 3 years service life in the temperature below 200 ℃.
The multiple metallic filter material of external in recent years development, like stainless steel fibre Nomex filtrate etc., but it costs an arm and a leg, and applies difficulty in China.States such as Germany and Britain are engaged in the research of sclerosis fold filtrate in recent years; This filtrate efficiency of dust collection is high; Life-span is long; Filter bag does not need skeleton; Deduster is under same size, and its filter area increases by 50%-200% by contrast, but this deduster ash-removal effect is not good; Its inner pore membrane of fine dust easy blocking influences dust collection performance.
In view of the domestic and international current situation of sack cleaner,, demand researching and developing a kind of novel filter material urgently according to the development of production field requirement to dedusting technology.
Summary of the invention
The present invention provides a kind of novel microporous aluminium filtering material, to solve the problem that the filtering material heat resistance is poor, undesirable for high humidity gas ash-removal effect, efficiency of dust collection is not high that prior art is produced.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
The processing method of novel microporous aluminium filtering material is characterized in that: said novel aluminum filtering material is, and to be primary raw material with common pure aluminum plate process through following steps:
(1) common pure aluminum plate is heated to 450-525 ℃ in high temperature furnace;
(2) will become macroporous additive in high temperature furnace, to be heated to 650-750 ℃;
(3) will heat aluminium sheet and after high temperature furnace takes out, deliver in the pore-forming airtight chamber, and in chamber, utilize ceramic Venturi tube material-spraying device to become macroporous additive to suck in the spray gun high temperature and the heating aluminium sheet is evenly sprayed, make high temperature become macroporous additive directly to be bonded on the aluminium sheet;
(4) will be coated with high temperature and become the aluminium sheet of macroporous additive to carry out roll extrusion, and make into macroporous additive and be pressed in the aluminium sheet inside, form with the aluminium sheet that becomes macroporous additive;
(5) treat aluminium sheet cooling after, put it in the dissolving tank, the one-tenth macroporous additive in the aluminium sheet directly is dissolved out, aluminium sheet has just formed the micropore shape;
(6) after the aluminium sheet that will form the micropore shape dries, put to the negative pressure bed, to surface of aluminum plate spraying ptfe emulsion, under action of negative pressure, emulsion is penetrated on the wall of aluminium sheet micropore, and micropore chamber wall surface is capped one deck polytetrafluoroethylene film;
(7) with the oven dry of porous aluminium sheet, just formed micropore aluminium filtering material.
In said step (3), utilize roll squeezer will heat aluminium sheet and take out and draw to pore-forming airtight chamber by the high temperature furnace outlet.
Said one-tenth macroporous additive is selected 200-300 purpose industry sodium chloride powder salt for use.
In said step (4), aluminium sheet is carried out roll extrusion through roll squeezer.
In said step (7), utilize 380 ℃ hot blast that the porous aluminium sheet is dried.
Said common pure aluminum plate is selected the thick aluminium sheet of 1mm for use.
Description of drawings:
Fig. 1 is ceramic Venturi tube material-spraying device fundamental diagram;
Description of reference numerals:
1. compressed air, 2. gate valve, 3. compressed air heating cabinet, 4. HAI Heated Air Intake pipe, 5. Venturi tube expansion segment, 6. spray material horn mouth, 7. Venturi tube contraction section, 8. suction heat tracing chamber, 9. feed rotating disc, 10. dosing U type groove, 11. feed motors, 12. screw(-type) feeders, 13. storing heater incubators, 14. material storing box.
The specific embodiment:
Below in conjunction with embodiment the present invention is elaborated.
The processing of novel microporous aluminium filtering material according to the invention is to be main material with the thick common pure aluminum plate of 1mm.Aluminium sheet at first is heated to 450-525 ℃ in high temperature furnace, near the fusing point state.Become macroporous additive to select 200-300 purpose industry sodium chloride powder salt for use.The sodium chloride powder salt is heated to 650-750 ℃ in high temperature furnace.Utilize roll squeezer will heat aluminium sheet in the high temperature furnace outlet and draw to pore-forming airtight chamber, in chamber, utilize ceramic Venturi tube material-spraying device that high-temp chlorination sodium powder salt is sucked in the spray gun heating aluminium sheet is evenly sprayed.Because the temperature of sodium chloride powder salt is higher than 570 ℃ of the melting temperatures of fine aluminium, the sodium chloride powder salt that is sprayed onto on the aluminium sheet directly is bonded on the aluminium sheet.Aluminium sheet behind the spraying high temperature powder salt is pressed into the sodium chloride powder salt in the aluminium sheet inside through the roll squeezer roll extrusion, forms the aluminium sheet of band pore former sodium chloride powder salt.Aluminium sheet after the processing is transported out through carrying roller and size is on demand cut out, treat aluminium sheet cooling after, the scale aluminium sheet is put in the dissolving tank, the sodium chloride powder salt in the aluminium sheet directly is dissolved out, aluminium sheet just forms the micropore shape.Has the high ventilation performance.
After aluminium sheet behind the pore-forming dries, put on the negative pressure bed, to its surface spraying ptfe emulsion, under action of negative pressure, ptfe emulsion is penetrated on the wall of aluminium sheet micropore, and micropore chamber wall surface is capped one deck polytetrafluoroethylene film.The hot blast that utilizes 380 ℃ has just formed micropore aluminium filtering material to the oven dry of porous aluminium sheet.
Micropore aluminium filtering material is because its micropore surface has one deck polytetrafluoroethylene film; Just have good hydrophobicity and pollution resistance, oxidation and the corrosion that prevents aluminium had good protective effect, also can improve the efficiency of dust collection of filtration; Reduce filtration resistance, improve the filtration treatment amount.
Pottery Venturi tube material-spraying device is a prior art, sketches its operation principle as shown in Figure 1:
Become macroporous additive in material storing box 14, to be heated to 450-525 ℃ through storing heater incubator 13, give feed rotating disc 9 material loadings by screw(-type) feeder 12, dosing U type groove 10 is the storing quality of record bit length U type groove quantitatively.When beginning that the heating aluminium sheet when being injected into macroporous additive, is opened compressed air gate 2, compressed air 1 is heated to 500-700 ℃ at compressed air heating cabinet 3, is ejected by HAI Heated Air Intake pipe 4.Form very high negative pressure at Venturi tube contraction section 7 like this.Start feed motor 11,9 rotations of feed rotating disc are got up, and become macroporous additive even continuous being siphoned away is ejected on the aluminium sheet.The rotary speed of adjustment feed motor 11 just can be controlled the quality that pore former sprays.
Claims (6)
1. the processing method of novel microporous aluminium filtering material is characterized in that: said novel aluminum filtering material is, and to be primary raw material with common pure aluminum plate process through following steps:
(1) common pure aluminum plate is heated to 450-525 ℃ in high temperature furnace;
(2) will become macroporous additive in high temperature furnace, to be heated to 650-750 ℃;
(3) will heat aluminium sheet and after high temperature furnace takes out, deliver in the pore-forming airtight chamber, and in chamber, utilize ceramic Venturi tube material-spraying device to become macroporous additive to suck in the spray gun high temperature and the heating aluminium sheet is evenly sprayed, make high temperature become macroporous additive directly to be bonded on the aluminium sheet;
(4) will be coated with high temperature and become the aluminium sheet of macroporous additive to carry out roll extrusion, and make into macroporous additive and be pressed in the aluminium sheet inside, form with the aluminium sheet that becomes macroporous additive;
(5) treat aluminium sheet cooling after, put it in the dissolving tank, the one-tenth macroporous additive in the aluminium sheet directly is dissolved out, aluminium sheet has just formed the micropore shape;
(6) after the aluminium sheet that will form the micropore shape dries, put to the negative pressure bed, to surface of aluminum plate spraying ptfe emulsion, under action of negative pressure, emulsion is penetrated on the wall of aluminium sheet micropore, and micropore chamber wall surface is capped one deck polytetrafluoroethylene film;
(7) with the oven dry of porous aluminium sheet, just formed micropore aluminium filtering material.
2. according to the processing method of the said novel microporous aluminium filtering material of claim 1, it is characterized in that: in said step (3), utilize roll squeezer will heat aluminium sheet and take out and draw to pore-forming airtight chamber by the high temperature furnace outlet.
3. according to the processing method of the said novel microporous aluminium filtering material of claim 1, it is characterized in that: said one-tenth macroporous additive is selected 200-300 purpose industry sodium chloride powder salt for use.
4. according to the processing method of the said novel microporous aluminium filtering material of claim 1, it is characterized in that: in said step (4), aluminium sheet is carried out roll extrusion through roll squeezer.
5. according to the processing method of the said novel microporous aluminium filtering material of claim 1, it is characterized in that: in said step (7), utilize 380 ℃ hot blast that the porous aluminium sheet is dried.
6. according to the processing method of the said novel microporous aluminium filtering material of claim 1, it is characterized in that: said common pure aluminum plate is selected the thick aluminium sheet of 1mm for use.
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| CN 201110249226 CN102350132B (en) | 2011-08-29 | 2011-08-29 | Processing method of novel microporous aluminum filtering material |
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| CN 201110249226 CN102350132B (en) | 2011-08-29 | 2011-08-29 | Processing method of novel microporous aluminum filtering material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332137A (en) * | 2018-11-02 | 2019-02-15 | 昆明理工大学 | A kind of porous aluminium surface coated with PTFE/SiO2/Al2O3The preparation method of perforated membrane |
| CN109433566A (en) * | 2018-11-02 | 2019-03-08 | 昆明理工大学 | A kind of preparation method of porous aluminum coating polytetrafluoroethylene film |
| CN109575739A (en) * | 2018-12-17 | 2019-04-05 | 北京揽山环境科技股份有限公司 | A kind of Teflon long paint and preparation method thereof for coating porous media surface |
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| CN1122381A (en) * | 1993-06-25 | 1996-05-15 | 罗纳·布朗克化学公司 | Asbestos-free cathode element |
| WO1997020881A1 (en) * | 1995-12-01 | 1997-06-12 | W.L. Gore & Associates Gmbh | Microporous polytetrafluoroethylene (ptfe) bodies with filler |
| CN1374880A (en) * | 1999-09-22 | 2002-10-16 | 戈尔企业控股股份有限公司 | Chemically active filter material |
| CN101142149A (en) * | 2005-03-18 | 2008-03-12 | 金文申有限公司 | Process for the preparation of porous sintered metal materials |
| CN101413071A (en) * | 2008-12-05 | 2009-04-22 | 西北有色金属研究院 | Metal polyporous material with gradient pore structure and preparation thereof |
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2011
- 2011-08-29 CN CN 201110249226 patent/CN102350132B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122381A (en) * | 1993-06-25 | 1996-05-15 | 罗纳·布朗克化学公司 | Asbestos-free cathode element |
| WO1997020881A1 (en) * | 1995-12-01 | 1997-06-12 | W.L. Gore & Associates Gmbh | Microporous polytetrafluoroethylene (ptfe) bodies with filler |
| CN1374880A (en) * | 1999-09-22 | 2002-10-16 | 戈尔企业控股股份有限公司 | Chemically active filter material |
| CN101142149A (en) * | 2005-03-18 | 2008-03-12 | 金文申有限公司 | Process for the preparation of porous sintered metal materials |
| CN101413071A (en) * | 2008-12-05 | 2009-04-22 | 西北有色金属研究院 | Metal polyporous material with gradient pore structure and preparation thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332137A (en) * | 2018-11-02 | 2019-02-15 | 昆明理工大学 | A kind of porous aluminium surface coated with PTFE/SiO2/Al2O3The preparation method of perforated membrane |
| CN109433566A (en) * | 2018-11-02 | 2019-03-08 | 昆明理工大学 | A kind of preparation method of porous aluminum coating polytetrafluoroethylene film |
| CN109332137B (en) * | 2018-11-02 | 2020-09-08 | 昆明理工大学 | Porous aluminum surface coating PTFE/SiO2/Al2O3Method for producing porous film |
| CN109575739A (en) * | 2018-12-17 | 2019-04-05 | 北京揽山环境科技股份有限公司 | A kind of Teflon long paint and preparation method thereof for coating porous media surface |
| CN109575739B (en) * | 2018-12-17 | 2020-12-22 | 北京揽山环境科技股份有限公司 | Teflon coating for coating surface of porous medium and preparation method thereof |
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| CN102350132B (en) | 2013-07-31 |
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Owner name: LIAONING ELECTRIC POWER COMPANY LTD ELECTRIC POWER Effective date: 20121025 |
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Effective date of registration: 20121025 Address after: Heping District, Siping City of Shenyang province Liaoning 110006 Street No. 39 Applicant after: Northeast Electric Power Research Institute Co., Ltd. Applicant after: Liaoning Electric Power Co., Ltd.Electric Power Science Research Institute Applicant after: State Grid Corporation of China Address before: Heping District, Siping City of Shenyang province Liaoning 110006 Street No. 39 Applicant before: Northeast Electric Power Research Institute Co., Ltd. |
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Owner name: STATE GRID LIAONING ELECTRIC POWER CO., LTD. ELECT Free format text: FORMER OWNER: ELECTRIC POWER RESEARCH INSTITUTE OF LIAONING ELECTRIC POWER CO., LTD. STATE ELECTRICNET CROP. Effective date: 20131106 |
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Inventor after: Zhao Zhibin Inventor after: Zhao Hongyan Inventor before: Zhao Zhibin |
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Free format text: CORRECT: INVENTOR; FROM: ZHAO ZHIBIN TO: ZHAO ZHIBIN ZHAO HONGYAN |
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Effective date of registration: 20131106 Address after: Heping District, Siping City of Shenyang province Liaoning 110006 Street No. 39 Patentee after: Northeast Electric Power Research Institute Co., Ltd. Patentee after: Electric Power Research Institute of State Grid Liaoning Electric Power Co., Ltd. Patentee after: State Grid Corporation of China Patentee after: Heilongjiang Electric Power Research Institute Address before: Heping District, Siping City of Shenyang province Liaoning 110006 Street No. 39 Patentee before: Northeast Electric Power Research Institute Co., Ltd. Patentee before: Liaoning Electric Power Co., Ltd.Electric Power Science Research Institute Patentee before: State Grid Corporation of China |