CN102921254B - Preparation method of high-efficiency dedusting module - Google Patents
Preparation method of high-efficiency dedusting module Download PDFInfo
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- CN102921254B CN102921254B CN201210418554.4A CN201210418554A CN102921254B CN 102921254 B CN102921254 B CN 102921254B CN 201210418554 A CN201210418554 A CN 201210418554A CN 102921254 B CN102921254 B CN 102921254B
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Abstract
The invention discloses a preparation method of a high-efficiency dedusting module and belongs to the technical field of material preparation and environmental protection. The preparation method comprises the following steps of filling torsion wire-type hairbrushes into tunnels of a cellular porous ceramic material as a base material, and carrying out surface treatment on hole walls and the torsion wire-type hairbrushes of the cellular porous ceramic material by a dust binding agent to obtain the high-efficiency dedusting module having low air resistance and a large flux. When an air flow with dust flows in the high-efficiency dedusting module, the air flow with dust turbulently passes through complex channels composed of brush hair and ceramic holes, so that dust particles in the air flow are caught by dust binding agent layers on surfaces of the brush hair and inner surfaces of the ceramic holes. Therefore, the high-efficiency dedusting module is conducive to removal of fine particles having sizes less than or equal to 2 microns in an air flow.
Description
Technical field
The present invention relates to a kind of preparation method of high-effective dust-removing module, belong to material preparation and environmental protection technical field.
Background technology
Along with China's rapid development of economy, the gray haze air pollution of China big and medium-sized cities, developed area and basic industries close quarters is day by day serious.Along with China constantly comes into operation for increasingly strict, the relevant green technology of restriction of SOx and NOx emission and device, in China's atmospheric environment, the gross contamination emission of SOx and NOx reduces year by year, but, from current monitoring result, the gray haze of each section of China's Yangtze River Delta, Pearl River Delta and Jing-jin-ji region is polluted and is on the rise on the contrary, and the healthy and economic sustainable development of the common people has been arrived in serious threat.
Along with current, going deep into of research of tracing to the source is polluted for gray haze, it has been found that, industrial production discharge ultra-fine grain has certain contribution to haze weather, especially on the ground such as Shandong, Hebei, the dusty gas that the cement plant of a large amount of existence, sintering plant are discharged to the gray haze phenomenon contribution of surrounding enviroment obviously.Therefore need a kind of dedusting module efficiently badly and solve this problem.
There has been a lot of mature technology in current industrial dedusting field, such as: bag-type dusting, electric precipitation, dust removal with machine and wet dedusting etc.Wherein the efficiency of dust collection of bag-type dusting is very high, to the better tolerance that the particle size range of dust fluctuates, even if fine dust also can successfully obtain very high rejection, but the pressure drop of bag-type dusting is comparatively large, and the dynamic load(loading) for gas delivery equipment such as blower fans requires high, in addition, cloth bag common is at present difficult to withstand high temperatures, for containing the sinter fume of red heat particle and the particle that glows in waste gas, uses bag-type dust that " burning bag " accident usually occurs.In addition, common industrial waste gas process workshop section, the pressure of waste gas is very low, for the bag-type dusting that pressure drop is larger, usually needs to improve fan pressure head to deal with the pressure drop of cloth bag, even needs again to choose blower fan.
Electric precipitation is also current very conventional and high-effective dust-removing means, the method be first charged to the dust in air, then by electric field force it is removed from air and is fixed on the dust collection method of electrode plate surface.The method can be used for high-temp waste gas process, and only have very little pressure drop resistance, but its shortcoming is conductance to dust, gas humidity all there are certain requirements, otherwise can not obtain high dust removal efficiency, in addition the one-time investment of the method is higher, and operating cost is not low yet.
Dust removal with machine is the method utilizing the mechanical device such as dust-settling compartment, cyclone separator to carry out dedusting, the method has good effect for the dust that particle is larger, but for the particle of about 2 μm that cause gray haze to pollute, its purification efficiency is very low, and for subparticle, the reentrainment of dust problem of this class dust arrester is serious, effectively cannot play a role when the current efficiency of dust collection for subparticle requires more and more higher.
Wet dedusting is the method utilizing spray column, water dust scrubber or venturi scrubber to carry out dedusting, be common in the larger-size gas of process dust granules, tie up collection particle can by and water form mud and discharging, this technique is also higher to the requirement of equipment, equipment volume is comparatively large, invests higher.
In sum, current China needs that a kind of vapour lock is little badly, flux is large, the removal device that is directed to the high efficient and flexible of subparticle and droplet, and this is most important for suppressing the contribution of industrialness micronic dust to gray haze from source.
Summary of the invention
The object of the invention is to be obtained by the simple method of one that there is low vapour lock, high-throughout high-effective dust-removing module.This modular structure is compact, preparation method simple, serviceability temperature wide ranges, all has good seizure performance for soot, soil micronic dust, secondary particulate particle.
The object of the invention is to realize by the following technical solutions: adopt cellular porous pottery to be matrix, clog in the duct of cellular porous pottery by turning round line hairbrush, and utilize and tie up dirt agent solution impregnation process is carried out to the hole wall of cellular porous pottery and the bristle surface of turning round line hairbrush, impregnation concentration is tie up dirt agent saturated concentration 2% ~ 100%, then dry, obtain the high-effective dust-removing module with low vapour lock and high gas flux, turn round the external diameter of line hairbrush between the major diameter and minor axis in cellular porous ceramic channel walls cross section, the cellular porous pottery adopted is cordierite ceramic, aluminium oxide ceramics, SiO 2-ceramic or silicon carbide ceramics, its aperture is 1mm ~ 50mm, dirt agent of tiing up in described method is selected from a kind of or several arbitrarily mixture in the middle of polyacrylic acid, polyacrylamide, acrylic acid-acrylamide copolymer, Polysucciuimide, gelatinized starch, cation etherification starch, sodium carboxymethylcellulose, methylcellulose, polyethylene glycol and polyvinyl alcohol, the bristle turning round line hairbrush in described method is selected from steel wire, stainless steel wire, iron wire, coppered steel wire, copper coated iron wire, zinc-coated wire, galvanized wire, copper wire, glass fibre, carbon fiber, nylon yarn, polypropylene hair, polyethylene hair, polyvinyl chloride hair, tree palm fibre, horse hair, wool, mane.
Compared to common dust arrester, the dedusting module size that this method obtains is adjustable, good to subparticle removal effect.Micropore or slit is adopted to carry out trapped particles, the feature that pressure drop is little so this module has, air quantity is large owing to avoiding.For high-temperature dusty gas process, the materials such as steel wire, stainless steel wire, iron wire, coppered steel wire, copper coated iron wire, zinc-coated wire, galvanized wire, copper wire, glass fibre, carbon fiber can be selected as the bristle material turning round line hairbrush, its good thermal stability; The material such as nylon yarn, polypropylene hair, polyethylene hair, polyvinyl chloride hair, tree palm fibre, horse hair, wool, mane then can be selected as the bristle material turning round line hairbrush for normal temperature or middle temperature flue gas.The liquid film that dirt agent can form thickness in certain temperature range of tiing up used in technical scheme rests on bristle and porous ceramics duct inwall, when subparticle in air and wall and bristle clash into, can be tied up the liquid film of dirt agent catch, can not occur in follow-up airflow scouring escape and reentrainment of dust; When the absorption of dedusting module is saturated, available water to be turned round being deposited on line hairbrush cilium and subparticle in cellular porous ceramic inner walls and tie up dirt agent wash-out in the lump, and then dirt agent is tied up in load again, just can complete the regeneration of module.
Accompanying drawing explanation
Figure of description 1 and Fig. 2 draw and have carried out explaination directly perceived to the technical program, in fig. 1 and 2: 1 represents cellular porous pottery; Line hairbrush is turned round in 2 representatives.Fig. 1 is the oblique view of cellular porous pottery, and depicts the process turning round line hairbrush insertion ceramic hole, and Fig. 2 is that each ceramic hole is inserted into the front view after turning round line hairbrush.Fig. 1 and Fig. 2 is not construed as limiting the profile of ceramic monolith cellular porous in the technical program and duct shape, in the technical program, the profile of cellular porous pottery is except square, also can select circle, ellipse, pyriform, triangle and polygon according to actual needs, and its duct is except square hole, also circular hole, elliptical aperture, semicircle orifice and oblong aperture can be selected.
Detailed description of the invention
The preparation method of a kind of high-effective dust-removing module provided by the invention, its concrete technical scheme is achieved in that and adopts cellular porous pottery to be matrix, clog in the duct of cellular porous pottery by turning round line hairbrush, and utilize and tie up dirt agent solution impregnation process is carried out to the hole wall of cellular porous pottery and the bristle surface of turning round line hairbrush, impregnation concentration is tie up dirt agent saturated concentration 2% ~ 100%, then dry, obtain the high-effective dust-removing module with low vapour lock and high gas flux, the cellular porous pottery adopted is cordierite ceramic, aluminium oxide ceramics, SiO 2-ceramic or silicon carbide ceramics, its aperture is 1mm ~ 50mm, dirt agent of tiing up in described method is selected from a kind of or several arbitrarily mixture in the middle of polyacrylic acid, polyacrylamide, acrylic acid-acrylamide copolymer, Polysucciuimide, gelatinized starch, cation etherification starch, sodium carboxymethylcellulose, methylcellulose, polyethylene glycol and polyvinyl alcohol, the bristle turning round line hairbrush in described method is selected from steel wire, stainless steel wire, iron wire, coppered steel wire, copper coated iron wire, zinc-coated wire, galvanized wire, copper wire, glass fibre, carbon fiber, nylon yarn, polypropylene hair, polyethylene hair, polyvinyl chloride hair, tree palm fibre, horse hair, wool, mane.
Enumerate several specific embodiment below, to understand the present invention further:
Embodiment 1:
Get the honeycomb-like cordierite porous ceramics of one piece of size 10cm × 10cm, its hole dimension is 1.5mm × 1.5mm, hole count is 38 × 38, get 1444 and turn round line hairbrush, its external diameter is 2.1mm, bristle material is polyethylene filament, insert in the duct of cordierite honeycomb ceramic, a hairbrush is inserted in every hole, this module is flooded with gelatinization of starch solution (mass concentration 1%), then take out oven dry, acquisition efficiently can tie up the gas purification module of dirt, when its radical length is 20cm, under the air speed of 10000/h, pressure drop is less than 900Pa, to the particle of particle diameter 2 μm, it retains efficiency more than 90%.
Embodiment 2:
Get the honeycomb-shaped oxidizing aluminium porous ceramics of one piece of size 20cm × 20cm, its hole dimension is 1.5mm × 1.5mm, hole count is 76 × 76, get 5776 and turn round line hairbrush, its external diameter is 1.5mm, bristle material is polyacrylic fibres, insert in the duct of this cellular alumina pottery, a hairbrush is inserted in every hole, this module is flooded with the polyacrylamide solution (mass concentration 1.5%) of molecular weight 2,000,000, then take out oven dry, acquisition efficiently can tie up the gas purification module of dirt, when its radical length is 30cm, under the air speed of 10000/h, pressure drop is less than 900Pa, to the particle of particle diameter 2 μm, it retains efficiency more than 93%.
Embodiment 3:
Get the cylindrical honeycomb porous silica pottery of one piece of diameter 10cm, its channel diameter is 2mm, get external diameter be 2mm turn round line hairbrush, bristle material is bristles, insert in the duct of this silica ceramic honey comb, a hairbrush is inserted in every hole, this module is flooded with the acrylic acid-acrylamide copolymer solution (mass concentration 1.2%) of molecular weight 1,000,000, then take out oven dry, acquisition efficiently can tie up the gas purification module of dirt, when its radical length is 40cm, under the air speed of 10000/h, pressure drop is less than 1000Pa, to the particle of particle diameter 2 μm, it retains efficiency more than 98%.
Embodiment 4:
Get the honeycomb-shaped oxidizing aluminium porous ceramics of one piece of size 10cm × 10cm, its hole dimension is 1mm × 1mm, hole count is 50 × 50, get 2500 and turn round line hairbrush, its external diameter is 1.4mm, bristle material is tree palm fibre, insert in the duct of this cellular alumina pottery, a hairbrush is inserted in every hole, by this module of cation etherification starch solution impregnation of mass concentration 2%, then take out oven dry, acquisition efficiently can tie up the gas purification module of dirt, when its radical length is 25cm, under the air speed of 7000/h, pressure drop is less than 700Pa, to the particle of particle diameter 2 μm, it retains efficiency more than 96%.
Embodiment 5:
Get the cylindrical honeycomb carborundum porous ceramics of one piece of diameter 50cm, its channel diameter is 50mm, that gets external diameter 50mm turns round line hairbrush, bristle material is steel wire, insert in the duct of this silicon carbide honeycomb ceramics, a hairbrush is inserted in every hole, this module is flooded with the polyglycol solution (mass concentration 0.7%) of molecular weight 10000, then take out oven dry, obtain the gas purification module efficiently can tiing up dirt, when its radical length is 100cm, under the air speed of 10000/h, pressure drop is less than 900Pa, and to the particle of particle diameter 2 μm, it retains efficiency more than 97%.
Embodiment 6:
Get the honeycomb-like cordierite porous ceramics of one piece of size 10cm × 10cm, its hole dimension is 2mm × 2mm, that gets external diameter 2.5mm turns round line hairbrush, its bristle material is copper wire, insert in the duct of this cordierite honeycomb ceramic, a hairbrush is inserted in every hole, by this module of polyvinyl alcohol (molecular weight 100,000) solution impregnation of mass concentration 0.6%, then take out oven dry, obtain the gas purification module efficiently can tiing up dirt, when its radical length is 20cm, under the air speed of 7000/h, pressure drop is less than 700Pa, and to the particle of particle diameter 2 μm, it retains efficiency more than 95%.
Embodiment 7:
Get the honeycomb-like cordierite porous ceramics of one piece of size 10cm × 10cm, its hole dimension is 3mm × 3mm, that gets external diameter 3mm turns round line hairbrush, bristle material is glass fibre, insert in the duct of this cordierite honeycomb ceramic, a hairbrush is inserted in every hole, this module is flooded with the methocel solution of mass concentration 1%, then take out oven dry, obtain the gas purification module efficiently can tiing up dirt, when its radical length is 15cm, under the air speed of 7000/h, pressure drop is less than 700Pa, and to the particle of particle diameter 2 μm, it retains efficiency more than 90%.
Claims (3)
1. the preparation method of a high-effective dust-removing module, it is characterized in that this method realizes by the following technical solutions: adopt cellular porous pottery to be matrix, clog in the duct of cellular porous pottery by turning round line hairbrush, and utilize and tie up dirt agent solution impregnation process is carried out to the hole wall of cellular porous pottery and the bristle surface of turning round line hairbrush, impregnation concentration is tie up dirt agent saturated concentration 2% ~ 100%, then dry, obtain the dedusting module with low vapour lock and high gas flux, turn round the external diameter of line hairbrush between the major diameter and minor axis in cellular porous ceramic channel walls cross section, the cellular porous pottery adopted is cordierite ceramic, aluminium oxide ceramics, SiO 2-ceramic or silicon carbide ceramics, its aperture is 1mm ~ 50mm.
2. the preparation method of a kind of high-effective dust-removing module as claimed in claim 1, it is characterized in that: the dirt agent of tiing up in method is selected from the polyacrylic acid of molecular weight between 2000 ~ 20,000, the polyacrylamide of molecular weight between 1,000,000 ~ 2,500 ten thousand, the acrylic acid-acrylamide copolymer of molecular weight between 200,000 ~ 1,000 ten thousand, the Polysucciuimide of molecular weight between 300 ~ 20,000, gelatinized starch, cation etherification starch, sodium carboxymethylcellulose, methylcellulose, the polyethylene glycol of molecular weight between 1000 ~ 2.5 ten thousand and a kind of or several arbitrarily mixture in the middle of the polyvinyl alcohol of molecular weight between 2.5 ten thousand ~ 300,000.
3. the preparation method of a kind of high-effective dust-removing module as claimed in claim 1, is characterized in that: the bristle turning round line hairbrush in method is selected from steel wire, stainless steel wire, iron wire, coppered steel wire, copper coated iron wire, zinc-coated wire, galvanized wire, copper wire, glass fibre, carbon fiber, nylon yarn, polypropylene hair, polyethylene hair, polyvinyl chloride hair, tree palm fibre, horse hair, wool, mane.
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| CN104941348B (en) * | 2015-05-29 | 2017-01-04 | 中国科学院过程工程研究所 | A kind of industrial dedusting device of continuous operation |
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| CN107281845A (en) * | 2017-08-15 | 2017-10-24 | 合肥明英富海生物科技有限公司 | A kind of dust cleaner of dust removal machine |
| CN108355426B (en) * | 2017-12-21 | 2021-01-12 | 山东理工大学 | Full-effect additive and preparation method thereof |
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| CN2395038Y (en) * | 1999-09-14 | 2000-09-06 | 上海金昌机电设备有限公司 | Stainless steel wire corrugated elastic cushion |
| KR100469066B1 (en) * | 2003-04-14 | 2005-02-02 | 에스케이 주식회사 | A catalytic filter for the removal of soot particulates from diesel engine and method of making the same |
| CN101468308A (en) * | 2007-12-28 | 2009-07-01 | 中国科学院兰州化学物理研究所 | Supported ionic liquid material for reversibly and selectively absorbing carbon dioxide and preparation method thereof |
| CN201344052Y (en) * | 2008-12-29 | 2009-11-11 | 张宁 | Dual-loop automobile tail gas clean-up system |
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Effective date of registration: 20170306 Address after: 224001 Yancheng City environmental protection science and Technology Park, Lake District, Jiangsu, No. 666 Patentee after: JIANGSU ZHONGKE RUISAI POLLUTION CONTROL ENGINEERING CO., LTD. Address before: 100190 Beijing, Zhongguancun, north of No. two, No. 1, No. Patentee before: Institute of Process Engineering, Chinese Academy of Sciences |