CN113842898A - Composite material for adsorbing alkaline waste gas and VOCs for air purification and preparation method and application thereof - Google Patents

Composite material for adsorbing alkaline waste gas and VOCs for air purification and preparation method and application thereof Download PDF

Info

Publication number
CN113842898A
CN113842898A CN202111281174.6A CN202111281174A CN113842898A CN 113842898 A CN113842898 A CN 113842898A CN 202111281174 A CN202111281174 A CN 202111281174A CN 113842898 A CN113842898 A CN 113842898A
Authority
CN
China
Prior art keywords
parts
vocs
composite material
air purification
adsorbing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111281174.6A
Other languages
Chinese (zh)
Inventor
余习文
高峰
张军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Zewen Environmental Protection Technology Co ltd
Original Assignee
Anhui Zewen Environmental Protection Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Zewen Environmental Protection Technology Co ltd filed Critical Anhui Zewen Environmental Protection Technology Co ltd
Priority to CN202111281174.6A priority Critical patent/CN113842898A/en
Publication of CN113842898A publication Critical patent/CN113842898A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • 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
    • B01D53/38—Removing components of undefined structure
    • B01D53/42—Basic components
    • 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
    • B01D53/38—Removing components of undefined structure
    • B01D53/44—Organic components
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • 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
    • B01D53/81—Solid phase processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/046—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing halogens, e.g. halides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B01J20/165—Natural alumino-silicates, e.g. zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28057—Surface area, e.g. B.E.T specific surface area
    • B01J20/28064—Surface area, e.g. B.E.T specific surface area being in the range 500-1000 m2/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28069—Pore volume, e.g. total pore volume, mesopore volume, micropore volume
    • B01J20/28073—Pore volume, e.g. total pore volume, mesopore volume, micropore volume being in the range 0.5-1.0 ml/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28078—Pore diameter
    • B01J20/28083—Pore diameter being in the range 2-50 nm, i.e. mesopores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28095—Shape or type of pores, voids, channels, ducts
    • B01J20/28097—Shape or type of pores, voids, channels, ducts being coated, filled or plugged with specific compounds
    • 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
    • B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Nanotechnology (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a composite material for adsorbing alkaline waste gas and VOCs (volatile organic compounds) for air purification and a preparation method and application thereof, wherein the raw materials comprise 10-20 parts of activated carbon powder, 5-10 parts of alumina powder, 3-8 parts of zeolite molecular sieve, 3-5 parts of hydroxymethyl cellulose, 3-5 parts of chitosan, 2-5 parts of urea, 3-5 parts of calcium hypochlorite, 1-2 parts of dispersant, 1-2 parts of adhesive, 1-2 parts of bacteriostatic agent and the balance of distilled water, and the preparation method comprises the following steps: weighing the raw materials according to the mass parts, mixing and stirring the raw materials for 2-4 hours to obtain a mixed sample, transferring the mixed sample into a granulator, extruding and granulating through the granulator to obtain a primary product, placing the primary product into a dryer, drying for 2-4 hours to obtain a final product, and filtering the final product to obtain the composite material for adsorbing alkaline waste gas and VOCs for air purification. The invention improves the adsorption effect of the composite material on alkaline waste gas and VOCs, and effectively inhibits and eliminates microorganisms such as bacteria, viruses and the like.

Description

Composite material for adsorbing alkaline waste gas and VOCs for air purification and preparation method and application thereof
Technical Field
The invention belongs to the technical field of preparation of environment-friendly materials, and particularly relates to a composite material for adsorbing alkaline waste gas and VOCs (volatile organic compounds) for air purification, and a preparation method and application thereof.
Background
With the rapid development of science and technology and economy, people pay more and more attention to quality of life and life health, and in daily life, the time that people are indoor every day mostly exceeds 80%, so the influence of indoor air quality to human health is not a little worth. In recent years, the indoor air pollution problem is more obvious, the work efficiency and the life quality are reduced, and even the immune system of a human body is destroyed to induce physical diseases.
The most serious pollutants of indoor environmental pollution are mainly formaldehyde, acetaldehyde, benzene series, ammonia, and some bacteria, viruses and microorganisms. The formaldehyde is a main pollutant of the indoor environment, most of the formaldehyde in the indoor environment comes from adhesives in decorative materials such as latex, plates and sponge, the formaldehyde has high harm to human bodies, can be released for a long time in the decorative materials, and can cause damage to a nervous system and a respiratory system. Acetaldehyde is classified as a secondary carcinogen by the cancer research organization of the world health organization, is mainly present in exhaust gas generated by burning cigarettes in indoor environmental pollution, low-concentration acetaldehyde causes discomfort of eyes and noses and respiratory tract irritation and the like, and high-concentration acetaldehyde causes coma, headache, diarrhea, pulmonary edema and the like. Benzene series is often used as an organic solvent in paints, latex and building materials, mild poisoning can cause symptoms such as light headedness, nausea and vomiting, and severe poisoning can induce leukemia of different degrees. Ammonia mainly comes from a concrete wall, and excessive ammonia inhalation of a human body can cause the oxygen transport function of hemoglobin to be damaged, so that a series of respiratory diseases such as pharyngeal discomfort are caused. Bacteria, viruses and microorganism particles mainly drift in the air, which may cause allergic reactions in some people and cause diseases such as asthma and bronchitis.
At present, indoor air pollutants are mainly removed by physical adsorption, photocatalytic degradation and noble metal catalysis methods. The physical adsorption method generally uses activated carbon to remove air pollutants, but the general activated carbon adsorption has no selectivity, lower adsorption capacity, poor adsorption effect on low-concentration pollution, and secondary pollution caused by a desorption process. The photocatalytic method is very limited in the aspect of indoor air pollution treatment, and the method needs to be used for efficiently converting air pollutants under the irradiation of ultraviolet light and has no selectivity, so that the photocatalytic method is not suitable for treating the air pollution in daily life of most people. The noble metal catalysis method is to use noble metal to catalyze and degrade air pollution as the name suggests, but the manufacturing cost is higher, and the used noble metal such as silver, platinum, palladium and the like can cause human poisoning in the purification process.
Aiming at the technical problems, the invention discloses a composite material for adsorbing alkaline waste gas and VOCs for air purification and a preparation method and application thereof, and the invention improves the strength, specific surface area, adsorption capacity and adsorption effect of the composite material for adsorbing alkaline waste gas and VOCs for air purification, and effectively inhibits and eliminates microorganisms such as bacteria, viruses and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a composite material for adsorbing alkaline waste gas and VOCs for air purification and a preparation method and application thereof, aiming at solving the technical problems that the activated carbon has small adsorption capacity and is easy to desorb to cause secondary pollution and can not well inhibit and eliminate microorganisms such as bacteria, viruses and the like in the prior art.
In order to solve the technical problem, the invention provides a composite material for adsorbing alkaline waste gas and VOCs (volatile organic compounds) for air purification, which comprises 10-20 parts of raw material activated carbon powder, 5-10 parts of alumina powder, 3-8 parts of zeolite molecular sieve, 3-5 parts of hydroxymethyl cellulose, 3-5 parts of chitosan, 2-5 parts of urea, 3-5 parts of calcium hypochlorite, 1-2 parts of dispersant, 1-2 parts of adhesive, 1-2 parts of bacteriostatic agent and the balance of distilled water.
Preferably, the specific surface area of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification is 680-930 m2(ii) a total pore volume of 0.52 to 0.85m3The particle size of the porous material is 0.2-5 mm, the average pore diameter is 3-4 nm, the pore diameters are mainly distributed in the range of 0-50 nm, the real density is 0.95-1.05 g/mL, the bulk density is 0.65-0.8 g/mL, and the particle size is 0.2-5 mm.
Preferably, the pH value of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification is 6-8.
Preferably, the air cleaning material is 3m of the composite material for adsorbing alkaline waste gas and VOCs3The removal rate of VOCs measured by the cabin is 85-95%.
The invention also discloses a preparation method of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification, which is characterized by comprising the following preparation steps:
s1, weighing the following raw materials: weighing 10-20 parts of activated carbon powder, 5-10 parts of alumina powder, 3-8 parts of zeolite molecular sieve, 3-5 parts of hydroxymethyl cellulose, 3-5 parts of chitosan, 2-5 parts of urea, 3-5 parts of calcium hypochlorite, 1-2 parts of dispersing agent, 1-2 parts of adhesive, 1-2 parts of bacteriostatic agent and the balance of distilled water according to the mass parts;
s2, uniformly mixing: mixing and stirring the raw materials for 2-4 hours to obtain a mixed sample;
s3, extruding granules by a granulator: transferring the mixed sample into a granulator, and extruding and granulating through the granulator to obtain a primary product;
s4, drying: placing the initial product in a dryer, setting the target temperature to be 110-140 ℃, and drying for 2-4 h to obtain a final product, wherein the particle strength of the final product reaches 30-60N/m2And filtering the final product to obtain the composite material for adsorbing the alkaline waste gas and the VOCs for air purification.
Preferably, in step S1, the activated carbon powder, the alumina powder and the zeolite molecular sieve are all 200 to 300 mesh.
Preferably, in step S1, the dispersant is one or more selected from water glass, methylpentanol and sodium tripolyphosphate; the adhesive is one or more of polyethylene, polyurethane and epoxy resin; the bacteriostatic agent is one or more of polypyridine, silver ion and ethyl vanillin.
Preferably, in step S1, the temperature of the distilled water is controlled within the range of 15 to 30 ℃.
Preferably, in step S3, the primary product is cylindrical particles with a diameter of 2-6 mm and a length of 5-15 mm.
The invention also discloses application of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification in adsorbing the alkaline waste gas and the VOCs in air purification treatment.
Compared with the prior art, the invention has the following advantages:
the invention discloses a preparation method of a composite material for adsorbing alkaline waste gas and VOCs (volatile organic compounds) for air purification, which is characterized in that through setting a proper raw material proportion and preparation temperature, the prepared composite material for adsorbing alkaline waste gas and VOCs for air purification has high specific surface area, more adsorption sites and good adsorption performance, the porous structures of activated carbon, alumina and zeolite molecular sieves in an adsorbent of the composite material have good adsorption performance on VOCs, acidic groups on the surface of the composite material and added substances can be well bonded with alkaline substances, the alkaline waste gas and VOCs can be rapidly removed, in addition, the composite material can effectively remove low-concentration formaldehyde and acetaldehyde, the preparation process of the composite material is simple, the practicability is strong, and an antibacterial agent is additionally added, so that the inhibition and elimination of microorganisms such as bacteria, viruses and the like are obviously improved.
The composite material for adsorbing alkaline waste gas and VOCs for air purification prepared by the invention contains more O elements, Cl elements and S elements, wherein the O elements can change the surface chemical properties of the carbon material, so that Ca2+、Ag+、Al3+Can more easily penetrate into the carbon pores to increase the effective specific surface area of the composite material, and simultaneously, the element OThe N element and the Cl element can also provide more chemical adsorption sites, so that the adsorption performance is better. Wherein, the Cl element and the Ag + can effectively inhibit and inactivate microorganisms adsorbed by the composite material, so that the air purification performance of the composite material is newly improved.
Drawings
FIG. 1 is a flow chart showing the preparation of a composite material for adsorbing alkaline waste gas and VOCs for air purification;
FIG. 2 is a graph showing the nitrogen adsorption and desorption curves of the composite material for adsorbing alkaline waste gas and VOCs for air purification;
FIG. 3 is a graph showing the pore size distribution of the composite material for adsorbing alkaline waste gas and VOCs for air purification;
fig. 4 is a scanning electron microscope image of the composite material for adsorbing alkaline exhaust gas and VOCs for air purification.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
The following examples were evaluated by the following methods for the composite material for adsorbing alkaline exhaust gas and VOCs for air purification:
(1) removal rate of VOCs: pouring out a sample to be tested, uniformly stirring, weighing 100 g of the sample, filling the sample into a prepared injection molding frame to ensure good airtightness, then filling the sample into an air purifier, and covering the whole air purifier with a plastic bag; finally at 3m3Injecting a certain amount of detection solution into the box body, heating for 10 minutes to completely volatilize (simultaneously starting the stirring fan), closing the heater, sampling and measuring the initial concentration of the detection solution, then removing the plastic bag on the purifier, starting the purification fan and timing, and recording the purification condition after 30 minutes. The experimental temperature reaches 25 +/-2 ℃.
(2) Test apparatus 3m3Organic glass box, mixing fan, hygrothermograph, Samsung KJ350G-K3026WP air purifier, 4160 formaldehyde analyzer, Japan GAS acetaldehyde detection tube, Japan GAS ammonia detection tubeA Japanese GASTEC toluene detector tube, a Japanese GASTEC benzene detector tube and a Japanese GASTEC sampler.
(3) The sample material was analyzed for surface structure properties and surface pore distribution using a Nanosem model 430 field emission scanning electron microscope.
(4) The structural parameters of the sample material, such as specific surface area and pore volume, were determined using an automatic nitrogen adsorption analyzer model 3H-2000PS 1.
(5) The elemental content of the surface of the sample material was qualitatively and quantitatively analyzed using ESCALAB25 type X-ray diffraction photoelectron spectroscopy.
(6) The strength of the sample material was measured using a YHKC-2A particle Strength tester.
(7) Iodine and pH values of the sample materials were measured according to GB/T12496.8-2015 Wood activated carbon test method.
Example 1
The embodiment discloses a composite material for adsorbing alkaline waste gas and VOCs (volatile organic compounds) for air purification, which comprises 20 parts of raw material activated carbon powder, 10 parts of alumina powder, 5 parts of zeolite molecular sieve, 4 parts of hydroxymethyl cellulose, 4 parts of chitosan, 4 parts of urea, 4 parts of calcium hypochlorite, 2 parts of dispersant, 2 parts of adhesive, 2 parts of bacteriostatic agent and 50g of distilled water at 25 ℃, and the specific surface area of the composite material for adsorbing alkaline waste gas and VOCs for air purification is 680-930 m2(ii) a total pore volume of 0.52 to 0.85m3The average pore diameter is 3-4 nm, the pore diameters are mainly distributed in the range of 0-50 nm, the real density is 0.95-1.05 g/mL, the bulk density is 0.65-0.8 g/mL, the particle diameters are 0.2-5 mm, the pH value of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification is 6-8, and the composite material for adsorbing the alkaline waste gas and the VOCs for air purification has the particle diameter of 3m3The removal rate of VOCs measured by the cabin is 85-95%.
The embodiment also discloses a preparation method of the composite material for adsorbing alkaline waste gas and VOCs for air purification, which comprises the following preparation steps:
s1, weighing the following raw materials: weighing 20 parts of activated carbon powder, 10 parts of alumina powder, 5 parts of zeolite molecular sieve, 4 parts of hydroxymethyl cellulose, 4 parts of chitosan, 4 parts of urea, 4 parts of calcium hypochlorite, 2 parts of dispersing agent, 2 parts of adhesive, 2 parts of bacteriostatic agent and 50g of distilled water at 25 ℃, wherein the activated carbon powder, the alumina powder and the zeolite molecular sieve are all 200-300 meshes, and the dispersing agent is one or more of water glass, methyl amyl alcohol and sodium tripolyphosphate; the adhesive is one or more of polyethylene, polyurethane and epoxy resin; the bacteriostatic agent is one or more of polypyridine, silver ions and ethyl vanillin;
s2, uniformly mixing: mixing and stirring the raw materials for 2-4 hours to obtain a mixed sample;
s3, extruding granules by a granulator: transferring the mixed sample into a granulator, and extruding and granulating through the granulator to obtain a primary product, wherein the primary product is cylindrical particles with the diameter of 2-6 mm and the length of 5-15 mm;
s4, drying: placing the initial product in a dryer, setting the target temperature to be 125 ℃, and drying for 2 hours to obtain a final product, wherein the particle strength of the final product reaches 30-60N/m2Filtering the final product to obtain the composite material for adsorbing alkaline waste gas and VOCs for purifying air, which is recorded as HC1。
The embodiment also discloses application of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification in the aspect of adsorbing the alkaline waste gas and the VOCs in air purification treatment.
Specifically, the activated carbon powder in this example was purchased from zhengzhou bamboo forest activated carbon development ltd, the alumina powder and the zeolite molecular sieve were purchased from south fluideto new materials ltd, the hydroxymethylcellulose was purchased from north fluo chemical ltd, and the chitosan was purchased from xincheng biotechnology ltd; urea was purchased from Shenyang Longrun Fine chemical materials, Inc.; calcium hypochlorite was purchased from Shandong Xin Cheng chemical Co., Ltd, granulator was purchased from Zhang Jia hong Ruifeng machinery Co., Ltd, and dryer was purchased from Shanghai Li Cheng Bangxi apparatus science and technology Co., Ltd.
Example 2
Embodiment 2 discloses a composite material for adsorbing alkaline waste gas and VOCs for air purification, which comprises 10 parts of raw material activated carbon powder, 5 parts of alumina powder, 5 parts of zeolite molecular sieve, 4 parts of hydroxymethyl cellulose, 4 parts of chitosan, 4 parts of urea, 4 parts of calcium hypochlorite, 2 parts of dispersant, 2 parts of adhesive, 2 parts of bacteriostatic agent, and 25 ℃ distilled water50g, and the specific surface area of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification is 680-930 m2(ii) a total pore volume of 0.52 to 0.85m3The average pore diameter is 3-4 nm, the pore diameters are mainly distributed in the range of 0-50 nm, the real density is 0.95-1.05 g/mL, the bulk density is 0.65-0.8 g/mL, the particle diameters are 0.2-5 mm, the pH value of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification is 6-8, and the composite material for adsorbing the alkaline waste gas and the VOCs for air purification has the particle diameter of 3m3The removal rate of VOCs measured by the cabin is 85-95%.
The embodiment also discloses a preparation method of the composite material for adsorbing alkaline waste gas and VOCs for air purification, which comprises the following preparation steps:
s1, weighing the following raw materials: weighing 10 parts of activated carbon powder, 5 parts of alumina powder, 5 parts of zeolite molecular sieve, 4 parts of hydroxymethyl cellulose, 4 parts of chitosan, 4 parts of urea, 4 parts of calcium hypochlorite, 2 parts of dispersing agent, 2 parts of adhesive, 2 parts of bacteriostatic agent and 50g of distilled water at 25 ℃, wherein the activated carbon powder, the alumina powder and the zeolite molecular sieve are all 200-300 meshes, and the dispersing agent is one or more of water glass, methyl amyl alcohol and sodium tripolyphosphate; the adhesive is one or more of polyethylene, polyurethane and epoxy resin; the bacteriostatic agent is one or more of polypyridine, silver ions and ethyl vanillin;
s2, uniformly mixing: mixing and stirring the raw materials for 2-4 hours to obtain a mixed sample;
s3, extruding granules by a granulator: transferring the mixed sample into a granulator, and extruding and granulating through the granulator to obtain a primary product, wherein the primary product is cylindrical particles with the diameter of 2-6 mm and the length of 5-15 mm;
s4, drying: placing the initial product in a dryer, setting the target temperature to be 125 ℃, and drying for 2 hours to obtain a final product, wherein the particle strength of the final product reaches 30-60N/m2Filtering the final product to obtain the composite material for adsorbing alkaline waste gas and VOCs for purifying air, which is recorded as HC2。
The embodiment also discloses application of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification in the aspect of adsorbing the alkaline waste gas and the VOCs in air purification treatment.
Example 3
Embodiment 3 discloses a composite material for adsorbing alkaline waste gas and VOCs for air purification, which comprises 20 parts of raw material activated carbon powder, 5 parts of alumina powder, 5 parts of zeolite molecular sieve, 4 parts of hydroxymethyl cellulose, 4 parts of chitosan, 4 parts of urea, 4 parts of calcium hypochlorite, 1 part of dispersant, 1 part of adhesive, 1 part of bacteriostatic agent and 50g of distilled water at 25 ℃, wherein the specific surface area of the composite material for adsorbing alkaline waste gas and VOCs for air purification is 680-930 m2(ii) a total pore volume of 0.52 to 0.85m3The average pore diameter is 3-4 nm, the pore diameters are mainly distributed in the range of 0-50 nm, the real density is 0.95-1.05 g/mL, the bulk density is 0.65-0.8 g/mL, the particle diameters are 0.2-5 mm, the pH value of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification is 6-8, and the composite material for adsorbing the alkaline waste gas and the VOCs for air purification has the particle diameter of 3m3The removal rate of VOCs measured by the cabin is 85-95%.
The embodiment also discloses a preparation method of the composite material for adsorbing alkaline waste gas and VOCs for air purification, which comprises the following preparation steps:
s1, weighing the following raw materials: weighing 10 parts of activated carbon powder, 5 parts of alumina powder, 5 parts of zeolite molecular sieve, 4 parts of hydroxymethyl cellulose, 4 parts of chitosan, 4 parts of urea, 4 parts of calcium hypochlorite, 2 parts of dispersing agent, 2 parts of adhesive, 2 parts of bacteriostatic agent and 50g of distilled water at 25 ℃, wherein the activated carbon powder, the alumina powder and the zeolite molecular sieve are all 200-300 meshes, and the dispersing agent is one or more of water glass, methyl amyl alcohol and sodium tripolyphosphate; the adhesive is one or more of polyethylene, polyurethane and epoxy resin; the bacteriostatic agent is one or more of polypyridine, silver ions and ethyl vanillin;
s2, uniformly mixing: mixing and stirring the raw materials for 2-4 hours to obtain a mixed sample;
s3, extruding granules by a granulator: transferring the mixed sample into a granulator, and extruding and granulating through the granulator to obtain a primary product, wherein the primary product is cylindrical particles with the diameter of 2-6 mm and the length of 5-15 mm;
s4, drying: placing the primary product in a dryerSetting a target temperature of 125 ℃, and drying for 2 hours to obtain a final product, wherein the particle strength of the final product reaches 30-60N/m2Filtering the final product to obtain the composite material for adsorbing alkaline waste gas and VOCs for purifying air, which is recorded as HC3。
The embodiment also discloses application of the composite material for adsorbing the alkaline waste gas and the VOCs for air purification in the aspect of adsorbing the alkaline waste gas and the VOCs in air purification treatment.
The prepared composite material HC for adsorbing alkaline waste gas and VOCs for purifying air1、HC2、HC3And (5) carrying out characterization of pore structure characteristics and surface structure properties and adsorption performance test.
(I) respectively testing the composite material HC adsorbing alkaline waste gas and VOCs for air purification1、HC2、HC3The nitrogen adsorption and desorption performance, the pore size distribution and the pore structure parameters are shown in the table 1, wherein the nitrogen adsorption and desorption performance curve chart is shown in fig. 2, the pore size distribution chart is shown in fig. 3, and the pore structure parameters are shown in the table.
TABLE 1 HC1、HC2、HC3Pore structure parameter table
Figure BDA0003331135150000071
Wherein dap (nm) represents the average pore diameter in nm; sBET(m2The specific surface area is expressed in m2/g；Smic(m2The specific surface area of the micropores is expressed in m2/g；Vt(cm3,/g) represents the total pore volume in cm3/g；Vmic(cm3The volume of pores in the unit of cm is expressed as the volume of pores in the micropores3/g。
Composite material HC for adsorbing alkaline exhaust gas and VOCs for air purification shown in FIG. 21、HC2、HC3The nitrogen adsorption and desorption curve chart shows that the adsorption capacity of the composite material to nitrogen is rapidly increased under the relative partial pressure of 0-0.1, which indicates that micropores smaller than 2nm exist; the adsorption capacity of the composite material to nitrogen is kept at the relative partial pressure of 0.1-0.4Equilibrium is maintained, indicating a large number of mesopores of 2 to 50 nm; under the condition of high relative pressure, the adsorption curve and the desorption curve are not superposed any more, and the adsorption curve and the desorption curve have obvious hysteresis loop phenomena, which are the combination of I-type and IV-type characteristics and indicate that a certain amount of micropores and mesopores exist.
Composite material HC for adsorbing alkaline exhaust gas and VOCs for air purification shown in FIG. 31、HC2、HC3The distribution of micropores and mesopores can be seen from the nitrogen pore size distribution diagram, which shows that the composite material HC for adsorbing alkaline waste gas and VOCs for air purification1、HC2、HC3Simultaneously has micropore and mesopore structures; composite material HC for adsorbing alkaline waste gas and VOCs for air purification1、HC2、HC3The pore diameter is distributed in the range of 0 to 50 nm.
As is clear from Table 1, the composite HC for adsorbing alkaline exhaust gas and VOCs for air purification1、HC2、HC3The average pore diameter of the porous material is between 3.21 and 3.74 nm; with the change of the preparation ratio, the composite material HC for adsorbing alkaline waste gas and VOCs for air purification1、HC2、HC3The specific surface area of (C) is first reduced and then increased, HC3The specific surface area of (2) is the largest; composite material HC for adsorbing alkaline waste gas and VOCs for air purification1、HC2、HC3Contains both a microporous portion and a mesoporous portion.
(II) composite HC adsorbing alkaline exhaust gas and VOCs for air purification3The scanning electron micrograph is shown in FIG. 4.
Composite material HC for adsorbing alkaline exhaust gas and VOCs for air purification shown in FIG. 43The scanning electron microscope image shows that a large number of pore channels exist on the surface of the composite material, the pore channels have very important effects on the adsorption of alkaline VOCs, and rich pore channel structures have different effects on the adsorption of different types of gases, so that the effective removal of the VOCs is facilitated. The flocculent substances on the surface are added with hydroxymethyl cellulose, chitosan, urea, calcium hypochlorite and other substances, and the substances are favorable for degrading alkaline substances.
(III) tested composite HC for adsorbing alkaline exhaust gas and VOCs for air purification1、HC2、HC3The particle strength is respectively 36, 45 and 55N per square meter; composite material HC for adsorbing alkaline waste gas and VOCs for air purification1、HC2、HC3The pH values of (A) are 6.75, 6.98 and 7.25 respectively; composite material HC for adsorbing alkaline waste gas and VOCs for air purification1、HC2、HC3The removal rate of VOCs is detailed in table 2:
TABLE 2 composite HC adsorbing alkaline exhaust gas and VOCs for air purification1、HC2、HC3Rejection table for alkaline VOCs
Figure BDA0003331135150000081
Composite material HC for adsorbing alkaline waste gas and VOCs for air purification1、HC2、HC3The method has good removal rate to VOCs, and the comprehensive removal rate is respectively 94.3%, 91.3% and 92.8%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The composite material for adsorbing alkaline waste gas and VOCs for air purification is characterized by comprising 10-20 parts of raw material activated carbon powder, 5-10 parts of alumina powder, 3-8 parts of zeolite molecular sieve, 3-5 parts of hydroxymethyl cellulose, 3-5 parts of chitosan, 2-5 parts of urea, 3-5 parts of calcium hypochlorite, 1-2 parts of dispersing agent, 1-2 parts of adhesive, 1-2 parts of bacteriostatic agent and the balance of distilled water.
2. The composite material for adsorbing alkaline waste gas and VOCs for air purification according to claim 1, wherein the specific surface area of the composite material for adsorbing alkaline waste gas and VOCs for air purification is 680-930 m2(ii) a total pore volume of 0.52 to 0.85m3(g) the average pore diameter is 3-4 nm, the pore diameters are mainly distributed in the range of 0-50 nm, and the real density is 0.95-105g/mL, a bulk density of 0.65 to 0.8g/mL, and a particle diameter of 0.2 to 5 mm.
3. The composite material for adsorbing alkaline exhaust gas and VOCs for air purification according to claim 1, wherein the pH of the composite material for adsorbing alkaline exhaust gas and VOCs for air purification is 6 to 8.
4. The composite adsorbent for adsorbing alkaline exhaust gases and VOCs for air purification according to claim 1, wherein the composite adsorbent for adsorbing alkaline exhaust gases and VOCs has a thickness of 3m3The removal rate of VOCs measured by the cabin is 85-95%.
5. A method for preparing the composite material for adsorbing alkaline exhaust gases and VOCs for air purification according to any one of claims 1 to 4, comprising the steps of:
s1, weighing the following raw materials: weighing 10-20 parts of activated carbon powder, 5-10 parts of alumina powder, 3-8 parts of zeolite molecular sieve, 3-5 parts of hydroxymethyl cellulose, 3-5 parts of chitosan, 2-5 parts of urea, 3-5 parts of calcium hypochlorite, 1-2 parts of dispersing agent, 1-2 parts of adhesive, 1-2 parts of bacteriostatic agent and the balance of distilled water according to the mass parts;
s2, uniformly mixing: mixing and stirring the raw materials for 2-4 hours to obtain a mixed sample;
s3, extruding granules by a granulator: transferring the mixed sample into a granulator, and extruding and granulating through the granulator to obtain a primary product;
s4, drying: placing the initial product in a dryer, setting a target temperature to be 110-140 ℃, and drying for 2-4 h to obtain a final product, wherein the particle strength of the final product reaches 30-60N/m2And filtering the final product to obtain the composite material for adsorbing the alkaline waste gas and the VOCs for air purification.
6. The method for preparing the composite material for adsorbing the alkaline exhaust gas and the VOCs for air purification according to claim 5, wherein in step S1, the activated carbon powder, the alumina powder and the zeolite molecular sieve are all 200-300 meshes.
7. The method according to claim 5, wherein in step S1, the dispersant is one or more selected from water glass, methyl amyl alcohol, and sodium tripolyphosphate; the adhesive is one or more of polyethylene, polyurethane and epoxy resin; the bacteriostatic agent is one or more of polypyridine, silver ions and ethyl vanillin.
8. The method for preparing a composite material for adsorbing alkaline exhaust gases and VOCs for air purification according to claim 5, wherein the temperature of the distilled water is controlled within a range of 15 to 30 ℃ in step S1.
9. The method according to claim 5, wherein in step S3, the primary product is cylindrical particles with a diameter of 2-6 mm and a length of 5-15 mm.
10. Use of the composite material for adsorbing alkaline exhaust gases and VOCs for air purification according to any one of claims 1 to 4 for adsorbing alkaline exhaust gases and VOCs in air purification treatment.
CN202111281174.6A 2021-11-01 2021-11-01 Composite material for adsorbing alkaline waste gas and VOCs for air purification and preparation method and application thereof Pending CN113842898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111281174.6A CN113842898A (en) 2021-11-01 2021-11-01 Composite material for adsorbing alkaline waste gas and VOCs for air purification and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111281174.6A CN113842898A (en) 2021-11-01 2021-11-01 Composite material for adsorbing alkaline waste gas and VOCs for air purification and preparation method and application thereof

Publications (1)

Publication Number Publication Date
CN113842898A true CN113842898A (en) 2021-12-28

Family

ID=78983835

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111281174.6A Pending CN113842898A (en) 2021-11-01 2021-11-01 Composite material for adsorbing alkaline waste gas and VOCs for air purification and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN113842898A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114921873A (en) * 2022-05-27 2022-08-19 苏州工业园区安泽汶环保技术有限公司 Preparation method of bactericidal and antiviral carbon fiber cloth composite material for air purification
CN114939432A (en) * 2022-05-09 2022-08-26 安徽泽汶环保科技有限公司 Preparation method and application of visible light catalytic oxidation peculiar smell removing composite material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103861421A (en) * 2014-01-10 2014-06-18 青岛川山国际投资开发有限公司 Air purifying agent
CN110227412A (en) * 2019-06-13 2019-09-13 魏健 A kind of indoor air purification agent and preparation method thereof
CN111013533A (en) * 2019-12-10 2020-04-17 华东理工大学 Modified activated carbon for purifying formaldehyde and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103861421A (en) * 2014-01-10 2014-06-18 青岛川山国际投资开发有限公司 Air purifying agent
CN110227412A (en) * 2019-06-13 2019-09-13 魏健 A kind of indoor air purification agent and preparation method thereof
CN111013533A (en) * 2019-12-10 2020-04-17 华东理工大学 Modified activated carbon for purifying formaldehyde and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114939432A (en) * 2022-05-09 2022-08-26 安徽泽汶环保科技有限公司 Preparation method and application of visible light catalytic oxidation peculiar smell removing composite material
CN114921873A (en) * 2022-05-27 2022-08-19 苏州工业园区安泽汶环保技术有限公司 Preparation method of bactericidal and antiviral carbon fiber cloth composite material for air purification

Similar Documents

Publication Publication Date Title
CN113842898A (en) Composite material for adsorbing alkaline waste gas and VOCs for air purification and preparation method and application thereof
CN109078489B (en) Rotatable uninterrupted adsorption-degradation integrated indoor air purification device
CN106902574B (en) A kind of air purifying filter core and its preparation method and application based on glass fibre and alumina fibre skeleton
CN101337177A (en) Active carbon capable of absorbing and decomposing formaldehyde and use thereof
CN109078477A (en) A kind of hydroxy-amino-acid is except purifying formaldehyde material and preparation method thereof
CN110918057A (en) Preparation method and application of hydrothermal carbon material for adsorbing and removing cadmium
CN114849729A (en) Ultraviolet light catalytic oxidation degradation pet peculiar smell composite material for air purification and preparation method thereof
CN109731464A (en) A kind of novel and multifunctional air conditioner filter element
CN110538553B (en) Preparation method of tourmaline-based negative ion air purification functional composite filter material
CN101716443A (en) Processing method of multifunctional air purification filter element
CN107243321B (en) A kind of air cleaning material of long-acting removal organic polluter
Rezaee et al. Adsorption properties and breakthrough model of formaldehyde on bone char
CN102614858B (en) Reproducible selective adsorption-photocatalysis composite material and preparation method and application thereof
CN112843880A (en) Multifunctional composite air purification filter screen and preparation method thereof
CN112808237B (en) Modified activated carbon fiber felt and filter screen for removing formaldehyde and preparation method thereof
CN110201661A (en) A kind of manganese base charcoal of porous array structure and its preparation method and application
Zhang et al. A Novel Sustainable Semiconductor/Metal-organic Framework Coated Electret Filter for Simultaneous Removal of PM2. 5 and VOCs
CN114887655A (en) Nano NiO-VO X /TiO 2 -molecular sieve composite catalyst and preparation method and application thereof
CN109663564A (en) A kind of gas adsorption material and preparation method thereof
CN112107992A (en) Harmful gas removing medium and preparation method thereof
CN216457515U (en) Air purification filter paper with good filtering effect
CN213943156U (en) Filter screen for removing harmful gas
CN114939432A (en) Preparation method and application of visible light catalytic oxidation peculiar smell removing composite material
CN113967464B (en) Preparation method and application of high-purity active carbon material for air purification
Qiao et al. Research progress of indoor air purification technology

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination