CN111118899A - Preparation method and application of ammonium bisulfate resistant finishing agent for filter material - Google Patents
Preparation method and application of ammonium bisulfate resistant finishing agent for filter material Download PDFInfo
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- CN111118899A CN111118899A CN201911362535.2A CN201911362535A CN111118899A CN 111118899 A CN111118899 A CN 111118899A CN 201911362535 A CN201911362535 A CN 201911362535A CN 111118899 A CN111118899 A CN 111118899A
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- ammonium bisulfate
- filter material
- finishing agent
- resistant
- mass
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- 239000000463 material Substances 0.000 title claims abstract description 92
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 239000000839 emulsion Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000006185 dispersion Substances 0.000 claims abstract description 31
- 239000008367 deionised water Substances 0.000 claims abstract description 27
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 25
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 20
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 20
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 12
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 12
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 11
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 9
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 9
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 40
- 239000004744 fabric Substances 0.000 claims description 27
- 238000007790 scraping Methods 0.000 claims description 25
- 239000011248 coating agent Substances 0.000 claims description 24
- 239000002344 surface layer Substances 0.000 claims description 19
- 238000005470 impregnation Methods 0.000 claims description 18
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 238000003490 calendering Methods 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000009999 singeing Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 5
- 239000004760 aramid Substances 0.000 claims description 5
- 229920006231 aramid fiber Polymers 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 238000009960 carding Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 229920002748 Basalt fiber Polymers 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 2
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000012752 auxiliary agent Substances 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 230000003993 interaction Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 18
- 239000000843 powder Substances 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 6
- LBFUKZWYPLNNJC-UHFFFAOYSA-N cobalt(ii,iii) oxide Chemical compound [Co]=O.O=[Co]O[Co]=O LBFUKZWYPLNNJC-UHFFFAOYSA-N 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000003421 catalytic decomposition reaction Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
- D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
-
- 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
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
-
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/49—Oxides or hydroxides of elements of Groups 8, 9, 10 or 18 of the Periodic System; Ferrates; Cobaltates; Nickelates; Ruthenates; Osmates; Rhodates; Iridates; Palladates; Platinates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
-
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/22—Polymers or copolymers of halogenated mono-olefins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Abstract
The invention discloses a preparation method of an ammonium bisulfate resistant finishing agent, which comprises the following steps: (1) sequentially adding metal oxide and polyvinyl alcohol into deionized water, stirring and mixing, and performing ultrasonic treatment for 1-2h to prepare a dispersion liquid; (2) and (2) mixing the dispersion liquid prepared in the step (1) with polytetrafluoroethylene emulsion and methyl silicone oil, and stirring to prepare mixed emulsion, namely the ammonium bisulfate-resistant finishing agent. The invention also provides application of the ammonium bisulfate resistant finishing agent prepared by the preparation method in preparation of an ammonium bisulfate resistant filter material. The invention has the beneficial effects that: the ammonium bisulfate-resistant finishing agent prepared by the invention is uniformly dispersed on the surface of the filter material to form a non-aggregated crystalline state, and the interaction between ammonium bisulfate and the filter material is changed by introducing the compound auxiliary agent, so that the adhesive force of ammonium bisulfate liquid on the surface of the filter material is reduced, and the bag pasting phenomenon of the filter bag is reduced.
Description
Technical Field
The invention relates to the technical field of textile additives, in particular to a preparation method and application of an ammonium bisulfate resistant finishing agent for a filter material.
Background
The bag type dust collector has the advantages of high dust collection efficiency, stable performance, no secondary pollution, easy recovery of collected dust, simple structure, low initial investment, convenient maintenance and the like, and can be widely applied to industries such as coal-fired power plants, steel, glass, metal smelting, cement and the like. The cloth bag runs in the dust collector, and the filtering performance is often lost or partially lost due to the reasons, so that the actual service life of the cloth bag is greatly shortened compared with the expected service life, and the maintenance and operation cost of a factory is greatly increased.
"bagging" is one of the most typical problems. The 'bag pasting' is the phenomenon that in the long-term running or shutdown process of the dust removal cloth bag, under the working condition that the humidity is high or oily substances are in contact with the filter material, the dust is condensed, adhered or crusted on the dust facing surface of the dust removal cloth bag or in the filter material and cannot be effectively removed by the online ash removal system, so that the running resistance is greatly increased. Because most of the prior denitration towers are arranged in front of a dust remover, excessive ammonia, sulfur oxides and water vapor in the flue gas can generate ammonium bisulfate, and the ammonium bisulfate exists for a long time in a viscous liquid state below 350 ℃, so that the phenomenon of 'bag pasting' can be caused.
Patent CN201410235104.0 discloses a preparation method of a dedusting and denitration integrated filter material, which comprises the following specific steps: (1) uniformly mixing polytetrafluoroethylene powder, denitration catalyst powder, a dispersing agent, a coupling agent and a lubricating agent according to a certain proportion, and stirring and blank making into a catalytic filter membrane blank; (2) preparing a prepared catalytic filter membrane blank into a controllable-hole catalytic filter membrane containing a denitration catalyst through processes of calendering, stretching, film forming and the like; (3) pretreating the filter material base cloth by using a treating agent; (4) the pretreated filter material base cloth is tightly combined with the catalytic filter membrane through hot-pressing compounding. Finally, the dedusting and denitration integrated filter material is prepared. The filter bag is made of filter materials, but because the normal working temperature of the filter bag is in the range of 160-300 ℃, the melting point of ammonium bisulfate is 147 ℃, the boiling point of ammonium bisulfate is 350 ℃ (decomposition temperature), and in the working temperature range of the filter bag, the ammonium bisulfate is in a viscous liquid state and has acid corrosion, on one hand, the filter bag and dust remover equipment are corroded, on the other hand, the ammonium bisulfate can be adhered to the surface of the filter bag and agglomerated with dust in the working condition, and the filter bag cannot pass through common pulse ash removal mode equipment, and the running resistance is too high.
Disclosure of Invention
The invention aims to solve the technical problem that a filter bag is easy to be pasted, and provides a preparation method of an ammonium bisulfate-resistant finishing agent for a filter material.
The invention solves the technical problems through the following technical means:
a preparation method of an ammonium bisulfate resistant finishing agent comprises the following steps:
(1) sequentially adding metal oxide and polyvinyl alcohol into deionized water, stirring and mixing, and performing ultrasonic treatment for 1-2h to prepare a dispersion liquid; the mass of the metal oxide is 3-10% of the mass of the dispersion liquid, the mass of the polyvinyl alcohol is 0.3-1.5% of the mass of the dispersion liquid, and the balance is deionized water;
(2) mixing the dispersion liquid prepared in the step (1) with polytetrafluoroethylene emulsion and methyl silicone oil, and stirring to prepare mixed emulsion, namely the ammonium bisulfate-resistant finishing agent; the mass of the dispersion liquid is 25-35% of the mass of the mixed emulsion, the mass of the polytetrafluoroethylene emulsion is 55-65% of the mass of the mixed emulsion, and the mass of the methyl silicone oil is 8-12% of the mass of the mixed emulsion.
Has the advantages that: when the mass of the metal oxide is less than 3% of the mass of the dispersion liquid, the actual measurement temperature of ammonium bisulfate is more than 230 ℃, the actual working condition temperature is more than 230 ℃, the temperature requirement of catalytic decomposition cannot be met, when the mass of the metal oxide is more than 10% of the mass of the dispersion liquid, the phenomenon of metal particle agglomeration is easy to occur, the phenomenon of uneven impregnation on the surface of a filter material is caused, the agglomerated particles are easy to fall off under the blowing pressure of 0.5MPa, the polyvinyl alcohol is a dispersing agent, the metal particle agglomeration is easy to cause when the mass is less than 0.3% of the mass of the dispersion liquid, the phenomenon of uneven impregnation on the surface of the filter material is caused, when the mass is more than 1.5% of the mass of the dispersion liquid, the viscosity of the solution is increased, the.
Preferably, the metal oxide is one or two of iron oxide and cobalt oxide.
The second technical problem to be solved by the invention is to provide an application of the ammonium bisulfate-resistant finishing agent prepared by the preparation method in preparation of an ammonium bisulfate-resistant filter material.
The invention solves the technical problems through the following technical means:
the application of the ammonium bisulfate-resistant finishing agent prepared by the preparation method in preparing an ammonium bisulfate-resistant filter material comprises the following steps:
(1) carrying the ammonium bisulfate resistant finishing agent on the surface of the filter material by blade coating or padding;
(2) and drying and shaping the filter material loaded with the ammonium bisulfate resistant finishing agent to obtain the ammonium bisulfate resistant filter material, wherein the shaping temperature is 240-280 ℃, and the shaping time is 5-10 min.
Preferably, the blade coating method comprises the steps of: mixing an ammonium bisulfate resistant finishing agent with deionized water to prepare a scraping coating agent, placing the scraping coating agent in a scraping coating groove, coating the scraping coating agent on the surface of a filter material through a scraper, and then rolling; the mass ratio of the ammonium bisulfate-resistant finishing agent to the deionized water is 1: 1-2.
Preferably, the padder pressure is 0.5 MPa.
Preferably, the padding method comprises the steps of: mixing an ammonium bisulfate resistant finishing agent with deionized water to prepare an impregnation liquid, placing the impregnation liquid in an impregnation tank, adjusting the liquid level of the impregnation liquid to be higher than the surface of a filter material by more than 5cm, and rolling the filter material after passing through the impregnation tank; the mass ratio of the ammonium bisulfate-resistant finishing agent to the deionized water is 1: 5-10.
Preferably, the padder pressure is 0.5 MPa.
Preferably, the filter material comprises a surface layer, a bottom layer and a base cloth layer, wherein the base cloth layer is positioned between the surface layer and the bottom layer, the surface layer, the bottom layer and the base cloth layer are fixed through a needling machine, and then the surface layer, the bottom layer and the base cloth layer are subjected to calendaring and singeing treatment to obtain the filter material.
Preferably, the surface layer and the bottom layer are both made of one or more of polyimide fibers, polytetrafluoroethylene fibers, glass fibers, polysulfonamide fibers, basalt fibers, carbon fibers, stainless steel fibers and aramid fibers through opening, mixing, carding and lapping.
Preferably, the base cloth layer is a net structure formed by warp and weft interweaving yarns made of polytetrafluoroethylene, glass fibers, aramid fibers and polyimide materials.
The invention has the advantages that:
(1) the ammonium bisulfate finishing agent prepared by the invention can be applied to filter materials, so that the ammonium bisulfate starts to generate decomposition reaction at a temperature of over 206 ℃, and the decomposition is more sufficient along with the rise of the temperature;
(2) the solid evaluation device tests show that: introducing nitrogen gas into the inlet of the reaction cavity, placing the prepared ammonium bisulfate liquid on the surface of the filter material treated by the ammonium bisulfate-resistant finishing agent, placing the filter material in the middle section of the reaction cavity, controlling the reaction temperature to continuously rise by a temperature control device and keeping the reaction temperature for 5min, and detecting NH at the outlet when the reaction temperature reaches 206 DEG C3Formation of NH as the temperature rises3The concentration of (A) is continuously increased, namely the reaction degree of catalytic decomposition is increased;
(2) the ammonium bisulfate finishing agent prepared by the invention is uniformly dispersed on the surface of the filter material to form a non-aggregated crystalline state, and the interaction between ammonium bisulfate and the filter material is changed by introducing the compound auxiliary agent, so that the adhesive force of ammonium bisulfate liquid on the surface of the filter material is reduced, and the bag pasting phenomenon of the filter bag is reduced.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Test materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
The specific techniques or conditions not specified in the examples can be performed according to the techniques or conditions described in the literature in the field or according to the product specification.
Example 1
Preparation method of ammonium bisulfate-resistant finishing agent
(1) Sequentially adding iron oxide powder and polyvinyl alcohol powder into deionized water, stirring and mixing for 2h, and performing ultrasonic treatment for 1h to prepare a dispersion liquid, wherein the mass of the iron oxide powder is 3% of the mass of the dispersion liquid, the mass of the polyvinyl alcohol powder is 0.3% of the mass of the dispersion liquid, and the balance is the deionized water;
(2) and (2) mixing the dispersion liquid prepared in the step (1) with polytetrafluoroethylene emulsion and methyl silicone oil, and stirring for 3 hours to prepare a mixed emulsion, namely the ammonium bisulfate-resistant finishing agent, wherein the mass of the dispersion liquid is 25% of the mass of the mixed emulsion, the mass of the polytetrafluoroethylene emulsion is 65% of the mass of the mixed emulsion, and the mass of the methyl silicone oil is 10% of the mass of the mixed emulsion.
Preparation of ammonium bisulfate-resistant filter material
(1) Preparing a filter material: the filter material comprises a surface layer, a bottom layer and a base cloth layer, wherein the base cloth layer is positioned between the surface layer and the bottom layer, the surface layer, the bottom layer and the base cloth layer are fixed through a needling machine, and then the filter material is prepared through calendaring and singeing treatment, wherein the calendaring temperature is 10m/min, the temperature is 255 ℃, the pressure is 0.5MPa, and the singeing speed is 12 m/min; the base cloth layer is a net structure formed by interweaving warps and wefts made of polytetrafluoroethylene materials; the prepared filter material is a microporous filter material, and the aperture of the filter material is 5-20 μm measured by an bubbling method; the filter material in the prior art can also be adopted;
(2) mixing the ammonium bisulfate-resistant finishing agent prepared in the embodiment with deionized water, wherein the mass ratio of the ammonium bisulfate-resistant finishing agent to the deionized water is 1:2, preparing a scraping coating agent, placing the scraping coating agent in a scraping coating tank, controlling the inclination angle of the scraping coating tank to enable the scraping coating agent to uniformly flow to the surface of a filter material, controlling the vertical distance from the bottom of the scraping coating tank to the surface of the filter material to be 3cm, removing excessive water through a padder, and controlling the padder pressure to be 0.5 Mpa;
(3) and (3) drying and setting the filter material by a hot air tentering setting machine, wherein the setting temperature is 250 ℃, the setting time is 5min, and the ammonium bisulfate resistant filter material is prepared after setting.
Example 2
Preparation method of ammonium bisulfate-resistant finishing agent
(1) Sequentially adding cobalt oxide powder and polyvinyl alcohol powder into deionized water, stirring and mixing for 2h, and performing ultrasonic treatment for 2h to prepare a dispersion liquid, wherein the mass of the cobalt oxide powder is 6% of the mass of the dispersion liquid, the mass of the polyvinyl alcohol powder is 0.8% of the mass of the dispersion liquid, and the balance is deionized water;
(2) and (2) mixing the dispersion liquid prepared in the step (1) with polytetrafluoroethylene emulsion and methyl silicone oil, and stirring for 3 hours to prepare a mixed emulsion, namely the ammonium bisulfate-resistant finishing agent, wherein the mass of the dispersion liquid is 30% of the mass of the mixed emulsion, the mass of the polytetrafluoroethylene emulsion is 60% of the mass of the mixed emulsion, and the mass of the methyl silicone oil is 10% of the mass of the mixed emulsion.
Preparation of ammonium bisulfate-resistant filter material
(1) Preparing a filter material: the filter material comprises a surface layer, a bottom layer and a base cloth layer, wherein the base cloth layer is positioned between the surface layer and the bottom layer, the surface layer, the bottom layer and the base cloth layer are fixed through a needling machine, and then the filter material is prepared through calendaring and singeing treatment, wherein the calendaring temperature is 10m/min, the temperature is 255 ℃, the pressure is 0.5MPa, and the singeing speed is 12 m/min; the surface layer is made of glass fibers through opening, mixing, carding and lapping, the bottom layer is made of aramid fibers through opening, mixing, carding and lapping, and the base cloth layer is of a net structure formed by warp and weft interweaving of yarns made of polytetrafluoroethylene materials; the filter material in the prior art can also be adopted;
(2) mixing the ammonium bisulfate-resistant finishing agent prepared in the embodiment with deionized water, wherein the mass ratio of the ammonium bisulfate-resistant finishing agent to the deionized water is 1:8, preparing impregnation liquid, placing the impregnation liquid in an impregnation tank, adjusting the liquid level of the impregnation liquid to be higher than the surface of a filter material by more than 5cm, enabling the filter material to pass through the impregnation tank at a constant speed of 4m/min, wherein the impregnation time is 20s, removing excessive water by a padder, and the padder pressure is 0.5 Mpa;
(3) and (3) drying and setting the filter material by a hot air tentering setting machine at the setting temperature of 260 ℃ for 8min, and setting to obtain the ammonium bisulfate resistant filter material.
Example 3
Preparation method of ammonium bisulfate-resistant finishing agent
(1) Sequentially adding iron oxide powder, cobalt oxide powder and polyvinyl alcohol powder into deionized water, stirring and mixing for 2 hours, and then carrying out ultrasonic treatment for 1 hour to prepare dispersion liquid, wherein the mass ratio of the iron oxide powder to the cobalt oxide powder is 1:1, the mass sum of the iron oxide powder and the cobalt oxide powder is A, A is 10% of the mass of the dispersion liquid, the mass of the polyvinyl alcohol powder is 1.5% of the mass of the dispersion liquid, and the balance is deionized water;
(2) and (2) mixing the dispersion liquid prepared in the step (1) with polytetrafluoroethylene emulsion and methyl silicone oil, and stirring for 5 hours to prepare a mixed emulsion, namely the ammonium bisulfate-resistant finishing agent, wherein the mass of the dispersion liquid is 35% of the mass of the mixed emulsion, the mass of the polytetrafluoroethylene emulsion is 55% of the mass of the mixed emulsion, and the mass of the methyl silicone oil is 10% of the mass of the mixed emulsion.
Preparation of ammonium bisulfate-resistant filter material
(1) Preparing a filter material: the filter material comprises a surface layer, a bottom layer and a base cloth layer, wherein the base cloth layer is positioned between the surface layer and the bottom layer, the surface layer, the bottom layer and the base cloth layer are fixed through a needling machine, and then the filter material is prepared through calendaring and singeing treatment, wherein the calendaring temperature is 10m/min, the temperature is 255 ℃, the pressure is 0.5MPa, and the singeing speed is 12 m/min; the base cloth layer is a net structure formed by interweaving warp and weft of yarns made of polyimide materials; the filter material in the prior art can also be adopted;
(2) mixing the ammonium bisulfate-resistant finishing agent prepared in the embodiment with deionized water, wherein the mass ratio of the ammonium bisulfate-resistant finishing agent to the deionized water is 1:1, preparing a scraping coating agent, placing the scraping coating agent in a scraping coating tank, controlling the inclination angle of the scraping coating tank to enable the scraping coating agent to uniformly flow to the surface of a filter material, controlling the vertical distance from the bottom of the scraping coating tank to the surface of the filter material to be 3cm, removing excessive water through a padder, and controlling the padder pressure to be 0.5 Mpa;
(3) and (3) drying and setting the filter material by a hot air tentering setting machine, wherein the setting temperature is 250 ℃, the setting time is 8min, and the ammonium bisulfate resistant filter material is prepared after setting.
Comparative example
This comparative example differs from example 3 in that:
(1) mixing polytetrafluoroethylene emulsion and deionized water, wherein the mass ratio of the polytetrafluoroethylene emulsion to the deionized water is 1:2, preparing a scraping agent, placing the scraping agent in a scraping tank, controlling the inclination angle of the scraping tank to enable the scraping agent to uniformly flow to the surface of a filter material, controlling the vertical distance between the bottom of a scraper and the filter material prepared in the embodiment 3 to be 5cm, removing excessive water through a padder, and controlling the padder pressure to be 0.5 Mpa;
(3) and (3) drying and setting the filter material by a hot air tentering setting machine at the setting temperature of 250 ℃ for 8min to obtain the ammonium bisulfate resistant filter material.
Example 4
The performance of the ammonium bisulfate-resistant filter materials prepared in the embodiments 1-3 and the comparative example is measured, and after the test of the field working condition, the dust remover and the filter bag with the same structure have the same quantity and the tested ammonia escape quantity is consistent, and after the filter materials are used for 3 months under the same load, the pressure difference of the dust remover in the embodiment 1 is 350-390Pa, the pressure difference of the dust remover in the embodiment 2 is 380-430Pa, the pressure difference of the dust remover in the embodiment 2 is 350-390Pa, and the pressure difference of the dust remover in the comparative example is 520-600 Pa; through the measurement of the pressure difference, the pressure difference of the filter material treated by the ammonium bisulfate resistant finishing agent is lower than that of the untreated filter material, and the rising of the pressure difference of the dust remover is mainly caused by the fact that the generated ammonium bisulfate generates dewing paste bags on the surface of the filter bag, so that the pores on the surface of the filter bag are blocked, the air permeability is reduced, and the resistance of the dust remover is raised.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A preparation method of an ammonium bisulfate resistant finishing agent is characterized by comprising the following steps:
(1) sequentially adding metal oxide and polyvinyl alcohol into deionized water, stirring and mixing, and performing ultrasonic treatment for 1-2h to prepare a dispersion liquid; the mass of the metal oxide is 3-10% of the mass of the dispersion liquid, the mass of the polyvinyl alcohol is 0.3-1.5% of the mass of the dispersion liquid, and the balance is deionized water;
(2) mixing the dispersion liquid prepared in the step (1) with polytetrafluoroethylene emulsion and methyl silicone oil, and stirring to prepare mixed emulsion, namely the ammonium bisulfate-resistant finishing agent; the mass of the dispersion liquid is 25-35% of the mass of the mixed emulsion, the mass of the polytetrafluoroethylene emulsion is 55-70% of the mass of the mixed emulsion, and the mass of the methyl silicone oil is 8-12% of the mass of the mixed emulsion.
2. The method of claim 1, wherein the metal oxide is one or both of iron oxide and cobalt oxide.
3. The application of the ammonium bisulfate-resistant finishing agent prepared by the preparation method of the ammonium bisulfate-resistant finishing agent in the preparation of an ammonium bisulfate-resistant filter material is characterized by comprising the following steps:
(1) carrying the ammonium bisulfate resistant finishing agent on the surface of the filter material by blade coating or padding;
(2) and drying and shaping the filter material loaded with the ammonium bisulfate resistant finishing agent to obtain the ammonium bisulfate resistant filter material, wherein the shaping temperature is 240-280 ℃, and the shaping time is 5-10 min.
4. The application of the ammonium bisulfate-resistant finishing agent in the preparation of an ammonium bisulfate-resistant filter material according to claim 3, wherein the blade coating method comprises the following steps: mixing an ammonium bisulfate resistant finishing agent with deionized water to prepare a scraping coating agent, placing the scraping coating agent in a scraping coating groove, coating the scraping coating agent on the surface of a filter material through a scraper, and then rolling; the mass ratio of the ammonium bisulfate-resistant finishing agent to the deionized water is 1: 1-2.
5. Use of an ammonium bisulfate-resistant finishing agent in the preparation of an ammonium bisulfate-resistant filter material according to claim 4, wherein the padder pressure is 0.5 MPa.
6. Use of an ammonium bisulfate-resistant finishing agent in the preparation of an ammonium bisulfate-resistant filter material according to claim 3, wherein the padding method comprises the steps of: mixing an ammonium bisulfate resistant finishing agent with deionized water to prepare an impregnation liquid, placing the impregnation liquid in an impregnation tank, adjusting the liquid level of the impregnation liquid to be higher than the surface of a filter material by more than 5cm, and rolling the filter material after passing through the impregnation tank; the mass ratio of the ammonium bisulfate-resistant finishing agent to the deionized water is 1: 5-10.
7. The use of an ammonium bisulfate-resistant finish in the preparation of an ammonium bisulfate-resistant filter material according to claim 6, wherein the padder pressure is 0.5 MPa.
8. The application of the ammonium bisulfate-resisting finishing agent in preparing an ammonium bisulfate-resisting filter material according to claim 3, wherein the filter material comprises a surface layer, a bottom layer and a base cloth layer, the base cloth layer is positioned between the surface layer and the bottom layer, the surface layer, the bottom layer and the base cloth layer are fixed through a needling machine, and then the filter material is prepared through calendaring and singeing treatment.
9. The use of an ammonium bisulfate-resistant finishing agent in the preparation of an ammonium bisulfate-resistant filter material according to claim 8, wherein the surface layer and the bottom layer are both made of one or more of polyimide fibers, polytetrafluoroethylene fibers, glass fibers, polysulfonamide fibers, basalt fibers, carbon fibers, stainless steel fibers and aramid fibers through opening mixing, carding and lapping.
10. The application of the ammonium bisulfate finishing agent in the preparation of the ammonium bisulfate filtering material according to claim 9, wherein the base fabric layer is a net structure formed by interweaving yarns made of polytetrafluoroethylene, glass fibers, aramid fibers and polyimide.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE846235A (en) * | 1975-09-16 | 1977-03-15 | COBALT OXIDE CATALYST | |
| WO2009080507A1 (en) * | 2007-12-21 | 2009-07-02 | Basf Se | Method for producing an amine |
| CN105544212A (en) * | 2015-12-31 | 2016-05-04 | 安徽省元琛环保科技有限公司 | Industrial smoke filter material finishing liquid and filter material treatment technology |
| CN106223030A (en) * | 2016-08-26 | 2016-12-14 | 安徽元琛环保科技股份有限公司 | A kind of filtrate dressing liquid, compound method and application improving filtering accuracy |
| CN106622275A (en) * | 2016-11-17 | 2017-05-10 | 龙岩紫荆创新研究院 | Preparation method of manganese cobalt catalyst for ammonium bisulfate decomposition |
| CN107287896A (en) * | 2017-07-31 | 2017-10-24 | 安徽元琛环保科技股份有限公司 | A kind of dedusting filtrate dressing liquid, its preparation method and application |
| CN110038579A (en) * | 2019-04-25 | 2019-07-23 | 上海复翼环保科技有限公司 | A kind of SCR catalyst and preparation method thereof promoting the dissociation of ammonium hydrogen sulfate low temperature |
-
2019
- 2019-12-26 CN CN201911362535.2A patent/CN111118899A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE846235A (en) * | 1975-09-16 | 1977-03-15 | COBALT OXIDE CATALYST | |
| WO2009080507A1 (en) * | 2007-12-21 | 2009-07-02 | Basf Se | Method for producing an amine |
| CN105544212A (en) * | 2015-12-31 | 2016-05-04 | 安徽省元琛环保科技有限公司 | Industrial smoke filter material finishing liquid and filter material treatment technology |
| CN106223030A (en) * | 2016-08-26 | 2016-12-14 | 安徽元琛环保科技股份有限公司 | A kind of filtrate dressing liquid, compound method and application improving filtering accuracy |
| CN106622275A (en) * | 2016-11-17 | 2017-05-10 | 龙岩紫荆创新研究院 | Preparation method of manganese cobalt catalyst for ammonium bisulfate decomposition |
| CN107287896A (en) * | 2017-07-31 | 2017-10-24 | 安徽元琛环保科技股份有限公司 | A kind of dedusting filtrate dressing liquid, its preparation method and application |
| CN110038579A (en) * | 2019-04-25 | 2019-07-23 | 上海复翼环保科技有限公司 | A kind of SCR catalyst and preparation method thereof promoting the dissociation of ammonium hydrogen sulfate low temperature |
Non-Patent Citations (1)
| Title |
|---|
| 叶栋 等: "Fe2O3添加对钛基SCR催化剂表面硫酸氢铵分解行为的影响规律", 《环境科学学报》, vol. 38, no. 5, 31 May 2015 (2015-05-31), pages 1776 - 1777 * |
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