CN107935573A - A kind of microbiological free air purifying filter element preparation method of low cost - Google Patents

A kind of microbiological free air purifying filter element preparation method of low cost Download PDF

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Publication number
CN107935573A
CN107935573A CN201711213257.5A CN201711213257A CN107935573A CN 107935573 A CN107935573 A CN 107935573A CN 201711213257 A CN201711213257 A CN 201711213257A CN 107935573 A CN107935573 A CN 107935573A
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low cost
filter element
air purifying
purifying filter
free air
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何明兴
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Wuhu Top Water Environmental Protection Technology Co Ltd
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Wuhu Top Water Environmental Protection Technology Co Ltd
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    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
    • 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
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • C—CHEMISTRY; METALLURGY
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
    • C04B35/19—Alkali metal aluminosilicates, e.g. spodumene
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/106—Ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/20—Halogens or halogen compounds
    • B01D2257/206—Organic halogen compounds
    • B01D2257/2064—Chlorine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/406—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/502—Carbon monoxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702—Hydrocarbons
    • B01D2257/7027—Aromatic hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/91—Bacteria; Microorganisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • B01D2258/06—Polluted air
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/444—Halide containing anions, e.g. bromide, iodate, chlorite

Abstract

The invention discloses a kind of microbiological free air purifying filter element preparation method of low cost, include the following steps：Silane coupling agent, absolute ethyl alcohol are uniformly mixed, add stone needle powder ultrasonic disperse, filtering, first material is obtained by filtration cakes torrefaction；First material, coconut husk powdered carbon, zeolite powder, calcium chloride, aluminium oxide, acrylate are uniformly mixed, silica dioxide gel is added and is uniformly mixed to obtain second material；Second material is granulated, is sintered, is subsequently placed in calcium hydroxide saturated solution and soaks, be dried to obtain microbiological free air purifying filter element of low cost.The method of the present invention is simple, gained filter core is suitable for the purification for air, avoid the injury that harmful substance produces human body in air, it is high for formaldehyde in air, particulate matter and the removal rate of bacterium, with purification efficiency height, high temperature resistant, the pressure loss is small, corrosion-resistant, service life is long, removes outstanding advantages of micronic dust in air, and of low cost.

Description

A kind of microbiological free air purifying filter element preparation method of low cost
Technical field
The present invention relates to air filtering core technical field, more particularly to a kind of microbiological free air purifying filter element of low cost to prepare Method.
Background technology
Polarization phenomenon is presented in indoor air purifying filter element on existing market in terms of production cost, and price is relatively low Filter core possesses basic filtering dust function, but poor to bacteria-eliminating efficacy；The more comprehensive filter core of function since its production cost is higher, Cause price higher, many puzzlements are brought to consumer, it would be highly desirable to solve.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of microbiological free air purifying filter element of low cost Preparation method, method is simple, and gained filter core is suitable for purification for air, avoids what harmful substance in air produced human body Injury, it is high for formaldehyde in air, particulate matter and the removal rate of bacterium, there is purification efficiency height, high temperature resistant, the pressure loss It is small, corrosion-resistant, service life is long, removes outstanding advantages of micronic dust in air, and of low cost, available for air adjustment system Air filtration, the filtering of automobile filter air-breathing of system, suitable for the place of various bad environments.
A kind of microbiological free air purifying filter element preparation method of low cost proposed by the present invention, includes the following steps：
Silane coupling agent, absolute ethyl alcohol, be uniformly mixed by S1, adds stone needle powder ultrasonic disperse, filtering, filtration cakes torrefaction is obtained To first material；
First material, coconut husk powdered carbon, zeolite powder, calcium chloride, aluminium oxide, acrylate, be uniformly mixed by S2, adds Silica dioxide gel is uniformly mixed to obtain second material；
Second material, be granulated by S3, is sintered, is subsequently placed in calcium hydroxide saturated solution and soaks, be dried to obtain into This cheap microbiological free air purifying filter element.
Preferably, in S1, the ultrasonic disperse time is 5-15min, and ultrasonic disperse temperature is 55-65 DEG C.
Preferably, in S1, drying temperature is 85-95 DEG C, drying time 25-35min.
Preferably, in S1, silane coupling agent, absolute ethyl alcohol, the weight ratio of stone needle powder are 1-2：60-80：30-40.
Preferably, in S2, first material, coconut husk powdered carbon, zeolite powder, calcium chloride, aluminium oxide, acrylate, dioxy The weight ratio of SiClx gel is 50-60：20-30：25-35：8-16：4-6：10-20：4-8.
Preferably, in S3, second material is granulated to obtain the particle that particle diameter is 1-5mm.
Preferably, in S3, sintering temperature is 700-800 DEG C, sintering time 1-3h.
Preferably, in S3, it is placed in calcium hydroxide saturated solution and soaks 5-10h.
Preferably, in S3, drying temperature is 100-115 DEG C.
The method of the present invention is simple, and gained filter core is suitable for purification for air, avoids in air harmful substance to human body The injury of generation, it is high for formaldehyde in air, particulate matter and the removal rate of bacterium, there is purification efficiency height, high temperature resistant, pressure Lose that small, corrosion-resistant, service life is long, removes outstanding advantages of micronic dust in air, it is and of low cost, available for air tune Air filtration, the filtering of automobile filter air-breathing of section system, suitable for the place of various bad environments.
The present invention using silane coupling agent to tourmaline carry out surface silanization, can effectively strengthen stone needle powder dispersiveness with Stability, it is high with the bond strength of acrylate, it is not readily separated, on the one hand there is higher anion yield and remote red Outer emissivity, effectively purifies the air of a room, on the other hand high with coconut husk powdered carbon, zeolite powder, calcium chloride, alumina dispersion degree, And bond strength is big, can adsorb in air has taste, poisonous and various pernicious gases, particularly to the formaldehyde in air, Benzene homologues, TVOC, carbon monoxide, ammonia, ozone, chlorine etc. have the adsorption cleaning of uniqueness and the ability of catalysis, can be further Filter effect is lifted, the effective adjusting and the absorption of pollutant of room air anion is realized, can be widely used for interior at home, The air quality of living environment, while long action time are improved, it is of low cost.
After testing, present invention gained air filtering core can keep the negative ion concentration in air to be uniformly maintained in 3000 for a long time A/cm3More than, and the clearance rate of the TVOC such as formaldehyde, benzene can be realized up to more than 95%, degerming antibiotic rate is up to 99%, for sky The removal rate that the removal rate that the removal rate of PM2.5 is more than 94.5%, PM1.0 in gas is more than 91.2%, PM0.5 is 88.5% More than.
Embodiment
In the following, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of microbiological free air purifying filter element preparation method of low cost, includes the following steps：
1g silane coupling agents, 80g absolute ethyl alcohols, be uniformly mixed by S1, adds 30g stone needle powder ultrasonic disperse 15min, ultrasound Dispersion temperature is 55 DEG C, and filtering, is warming up to 95 DEG C of dry 25min by filter cake, obtains first material；
S2, by 60g first materials, 20g coconut husks powdered carbon, 35g zeolite powders, 8g calcium chloride, 6g aluminium oxide, 10g acrylate Resin is uniformly mixed, and is added 8g silica dioxide gels and is uniformly mixed to obtain second material；
Second material, is granulated to obtain the particle that particle diameter is 1-5mm by S3, and 700 DEG C of sintering 3h, are subsequently placed in hydroxide 5h is soaked in calcium saturated solution, 115 DEG C are dried to obtain microbiological free air purifying filter element of low cost.
Embodiment 2
A kind of microbiological free air purifying filter element preparation method of low cost, includes the following steps：
2g silane coupling agents, 60g absolute ethyl alcohols, be uniformly mixed by S1, adds 40g stone needle powder ultrasonic disperse 5min, ultrasound Dispersion temperature is 65 DEG C, and filtering, is warming up to 85 DEG C of dry 35min by filter cake, obtains first material；
S2, by 50g first materials, 30g coconut husks powdered carbon, 25g zeolite powders, 16g calcium chloride, 4g aluminium oxide, 20g acrylate Resin is uniformly mixed, and is added 4g silica dioxide gels and is uniformly mixed to obtain second material；
Second material, is granulated to obtain the particle that particle diameter is 1-5mm by S3, and 800 DEG C of sintering 1h, are subsequently placed in hydroxide 10h is soaked in calcium saturated solution, 100 DEG C are dried to obtain microbiological free air purifying filter element of low cost.
Embodiment 3
A kind of microbiological free air purifying filter element preparation method of low cost, includes the following steps：
1.2g silane coupling agents, 75g absolute ethyl alcohols, be uniformly mixed by S1, adds 33g stone needle powder ultrasonic disperse 12min, surpasses Sound dispersion temperature is 58 DEG C, and filtering, is warming up to 92 DEG C of dry 28min by filter cake, obtains first material；
S2, by 58g first materials, 22g coconut husks powdered carbon, 32g zeolite powders, 10g calcium chloride, 5.5g aluminium oxide, 12g acrylic acid Ester resin is uniformly mixed, and is added 7g silica dioxide gels and is uniformly mixed to obtain second material；
Second material, is granulated to obtain the particle that particle diameter is 1-5mm by S3, and 730 DEG C of sintering 2.5h, are subsequently placed in hydrogen-oxygen Change in calcium saturated solution and soak 6h, 110 DEG C are dried to obtain microbiological free air purifying filter element of low cost.
Embodiment 4
A kind of microbiological free air purifying filter element preparation method of low cost, includes the following steps：
1.8g silane coupling agents, 65g absolute ethyl alcohols, be uniformly mixed by S1, adds 37g stone needle powder ultrasonic disperse 8min, surpasses Sound dispersion temperature is 62 DEG C, and filtering, is warming up to 88 DEG C of dry 32min by filter cake, obtains first material；
S2, by 52g first materials, 28g coconut husks powdered carbon, 28g zeolite powders, 14g calcium chloride, 4.5g aluminium oxide, 18g acrylic acid Ester resin is uniformly mixed, and is added 5g silica dioxide gels and is uniformly mixed to obtain second material；
Second material, is granulated to obtain the particle that particle diameter is 1-5mm by S3, and 770 DEG C of sintering 1.5h, are subsequently placed in hydrogen-oxygen Change in calcium saturated solution and soak 8h, 105 DEG C are dried to obtain microbiological free air purifying filter element of low cost.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (9)

1. a kind of microbiological free air purifying filter element preparation method of low cost, it is characterised in that include the following steps：
Silane coupling agent, absolute ethyl alcohol, be uniformly mixed by S1, adds stone needle powder ultrasonic disperse, filtering, and filtration cakes torrefaction is obtained the One material；
First material, coconut husk powdered carbon, zeolite powder, calcium chloride, aluminium oxide, acrylate, be uniformly mixed by S2, adds dioxy SiClx gel is uniformly mixed to obtain second material；
Second material, be granulated by S3, is sintered, is subsequently placed in calcium hydroxide saturated solution and soaks, it is low to be dried to obtain cost Honest and clean microbiological free air purifying filter element.
2. microbiological free air purifying filter element preparation method of low cost according to claim 1, it is characterised in that in S1, surpass Sound jitter time is 5-15min, and ultrasonic disperse temperature is 55-65 DEG C.
3. microbiological free air purifying filter element preparation method of low cost according to claim 1 or claim 2, it is characterised in that in S1, Drying temperature is 85-95 DEG C, drying time 25-35min.
4. according to any one of the claim 1-3 microbiological free air purifying filter element preparation methods of low cost, it is characterised in that In S1, silane coupling agent, absolute ethyl alcohol, the weight ratio of stone needle powder are 1-2：60-80：30-40.
5. according to any one of the claim 1-4 microbiological free air purifying filter element preparation methods of low cost, it is characterised in that In S2, first material, coconut husk powdered carbon, zeolite powder, calcium chloride, aluminium oxide, acrylate, the weight ratio of silica dioxide gel For 50-60：20-30：25-35：8-16：4-6：10-20：4-8.
6. according to any one of the claim 1-5 microbiological free air purifying filter element preparation methods of low cost, it is characterised in that In S3, second material is granulated to obtain the particle that particle diameter is 1-5mm.
7. according to any one of the claim 1-6 microbiological free air purifying filter element preparation methods of low cost, it is characterised in that In S3, sintering temperature is 700-800 DEG C, sintering time 1-3h.
8. according to any one of the claim 1-7 microbiological free air purifying filter element preparation methods of low cost, it is characterised in that In S3, it is placed in calcium hydroxide saturated solution and soaks 5-10h.
9. according to any one of the claim 1-8 microbiological free air purifying filter element preparation methods of low cost, it is characterised in that In S3, drying temperature is 100-115 DEG C.
CN201711213257.5A 2017-11-28 2017-11-28 A kind of microbiological free air purifying filter element preparation method of low cost Withdrawn CN107935573A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110935418A (en) * 2019-11-15 2020-03-31 西安重光明宸检测技术有限公司 Preparation method of filter element for removing formaldehyde in air
CN113549342A (en) * 2021-09-02 2021-10-26 和也健康科技有限公司 Method for modifying surface of stone needle powder

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020174771A1 (en) * 2001-05-25 2002-11-28 Kazuo Hokkirigawa Air cleaning filter
CN103381319A (en) * 2013-06-25 2013-11-06 蚌埠凤凰滤清器有限责任公司 Active carbon fiber filter core and preparation method thereof
CN103951399A (en) * 2014-04-08 2014-07-30 安徽省亚欧陶瓷有限责任公司 Stone needle ceramic tile and preparation method thereof
CN105126761A (en) * 2015-09-30 2015-12-09 天津艾希科技有限公司 Air purification composite active material for reducing smog
CN105152680A (en) * 2015-09-30 2015-12-16 天津艾希科技有限公司 Building material for air purification
CN105214437A (en) * 2015-09-30 2016-01-06 天津艾希科技有限公司 Purification of air composite active material
CN106582564A (en) * 2016-11-10 2017-04-26 安徽博硕科技有限公司 Attapulgite-polyacrylic acid nanocomposite gel with high adsorptivity and preparation method thereof
CN107125827A (en) * 2017-05-03 2017-09-05 佛山富离子环保科技有限公司 A kind of anion that discharges has the emulation plant of air-cleaning function

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020174771A1 (en) * 2001-05-25 2002-11-28 Kazuo Hokkirigawa Air cleaning filter
CN103381319A (en) * 2013-06-25 2013-11-06 蚌埠凤凰滤清器有限责任公司 Active carbon fiber filter core and preparation method thereof
CN103951399A (en) * 2014-04-08 2014-07-30 安徽省亚欧陶瓷有限责任公司 Stone needle ceramic tile and preparation method thereof
CN105126761A (en) * 2015-09-30 2015-12-09 天津艾希科技有限公司 Air purification composite active material for reducing smog
CN105152680A (en) * 2015-09-30 2015-12-16 天津艾希科技有限公司 Building material for air purification
CN105214437A (en) * 2015-09-30 2016-01-06 天津艾希科技有限公司 Purification of air composite active material
CN106582564A (en) * 2016-11-10 2017-04-26 安徽博硕科技有限公司 Attapulgite-polyacrylic acid nanocomposite gel with high adsorptivity and preparation method thereof
CN107125827A (en) * 2017-05-03 2017-09-05 佛山富离子环保科技有限公司 A kind of anion that discharges has the emulation plant of air-cleaning function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110935418A (en) * 2019-11-15 2020-03-31 西安重光明宸检测技术有限公司 Preparation method of filter element for removing formaldehyde in air
CN113549342A (en) * 2021-09-02 2021-10-26 和也健康科技有限公司 Method for modifying surface of stone needle powder

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