1184 results about "Air decontamination" patented technology

In accordance with an embodiment of the invention, an integrated air processing device comprises a housing defining an air inlet, an air outlet, and a pathway from the inlet to the outlet. An air decontamination section, an air conditioning section, and a heating section are provided along the pathway. A blower is also provided along the pathway, to drive air from the inlet to the outlet, along the pathway. In another example, an integrated air processing device comprises a housing as above, and an air conditioning section and a heating section along the pathway. An air decontamination section and/or a blower may also be provided along the pathway. In accordance with another embodiment, a portable isolation containment system comprises one or more portable containment enclosures coupled to the integrated air processing devices described above. Methods are disclosed, as well.

The invention relates to an air purifying composition, and a preparation method and use thereof. The method comprises: adding 0.1 to 40 parts of mixed fatty alcohol, 0.01 to 10 parts of dispersing aid, 106 parts of water and 0.01 to 5 parts of synergistic components into a reaction kettle under normal temperature and at room temperature, and fully stirring; adding 0.01 to 10 parts of nano silver solution and 0.05 to 10 parts of plant extract in turn, and uniformly stirring; and performing ultrasonic dispersion treatment on the mixture in the reaction kettle to obtain the air purifying composition. The air purifying composition prepared by the method has high antibacterial performance, can effectively remove harmful volatile organic matters and improve air quality in rooms, carriages, public places and the like, is safe and low in production cost and has high market competitive power.

An air decontamination system that cleans air which has been contaminated by a terrorist attack or other means of contamination. The air is drawn into the system, cleaned through the use of filters, and exits the system into an enclosed area where people have gathered to await passage of the danger. The unit is easily turned on and off via a switch.

The invention relates to a formula and preparation technology of a granular non-noble-metal efficient integrated air purification composite material, and belongs to the technical field of adsorption catalysis and air pollution treatment. The composite material is characterized by taking zeolite, meerschaum, a porous active carbon material, iolite or a self-made carrier as a catalyst carrier, taking one or several non-noble-metal oxides as an active component and a nitrogen-containing organic auxiliary agent, and being prepared through an immersion method. The catalyst has a column granular shape, and has the capacity of the non-noble-metal oxides being 12-15 wt% and the content of the nitrogen-containing organic auxiliary agent being 2.0-4.0 wt%. The material can effectively adsorb and purify formaldehyde, TVOC, benzene, toluene, xylene, ozone, sulfur dioxide, nitrogen dioxide, hydrogen sulfide and ammonia gas in air in an integrated manner at normal temperature and humidity, and the overall purification rate is no less than 95%. The material is suitable for places, such as offices, office buildings, living rooms, shopping malls, hospitals and hotels, for integrated air purification.

The invention discloses a functional nanofiber filtering material and a preparation method and application thereof, and belongs to the technical field of air purifying materials. The method comprises the following steps: adding C3N4 nanosheets into a solvent, dispersing evenly by ultrasonic vibration, adding polymer powder, dissolving evenly to obtain a polymer spinning solution containing the C3N4 nanosheets, and preparing the functional nanofiber filtering material by processing the polymer spinning solution on a substrate by the electrospinning technique; and the functional nanofiber filtering material can be well used in the filtration of organic pollutants, has high efficiency and low resistance when being used as an air filtration material, and can greatly improve the air quality.

The invention discloses a multifunctional air purification filter screen, which comprises a primary filter module, an HEPA filter module, and a gas adsorption and catalytic degradation module. The multi-module structures are connected and fixed into an integral filter screen from the outside in, the filter screen can achieve effective interception of fine particulate matters (PM2.5), bacteria, viruses and other particulate pollutants and thorough decomposition and purification of formaldehyde, ozone, toluene and other gaseous pollutants, also has deodorization, bacteriostasis and sterilization effects, is a multifunctional air purification filter screen integrating air filtration, purification, antibacterial efficacy, etc. With the characteristics of small wind resistance, long service life and good stability, the multifunctional air purification filter screen provided by the invention has great application prospects in air purifiers, central ventilation systems and other air purification devices, also is low in cost, and can realize large-scale continuous production.

The invention discloses an air conditioner capable of purifying air. The air conditioner comprises a control system, an air purification system, a temperature conditioning system, an air humidification system, an air detection device and a display screen, wherein the air purification system is arranged in an air conditioner air inlet channel at the front part of the temperature conditioning system; the air purification system comprises a plasma discharging device and a PM2.5 (Particulate Matter 2.5) filtering device; the air humidification system is arranged in an air conditioner air outlet channel in the rear part of the temperature conditioning system; the air detection device comprises a PM2.5 sensor and an air humidification sensor; the PM2.5 sensor and the air humidification sensor are used for transmitting collected data to the control system; the data received by the control system is displayed on the display screen in real time; meanwhile, the air humidification system is turned on or off according to the received data. The air conditioner can be used for conditioning the indoor air temperature and removing harmful particles in air, and solving the problem that the indoor air is dried if the air conditioner is turned on in winter.

The invention provides a graphene modified composite mesoporous carbon microsphere air purifying preparation. A certain amount of beta-cyclodextrin is added to thin-layered nano-SiO2 particles covering the surfaces of obtained micro-SiO2 particles, a certain quantity of obtained RGO/TiO2 nanoparticles is added simultaneously, -OH, -COOH, C-O-C and C=O oxygen-containing functional groups rich on the surface of graphene are adsorbed by and bonded with the RGO/TiO2 nanoparticles on the basis of the molecular recognition characteristic of beta-cyclodextrin, then a certain amount of CTAB (cetyltrimethylammonium bromide) surfactant is added, CTAB serving as a micelle stabilizer can stop the RGO/TiO2 nanoparticles from further hydrolysis and growth, and finally, the novel air purifying preparation adopting RGO/TiO2 supported by carbon microspheres with a mesoporous shell structure is obtained. With adoption of the scheme, the purity is high, RGO/TiO2 supported by the carbon microspheres with the mesoporous shell structure in powder is better in bonding performance, uniform in distribution and controllable in dimension at mesopores, and the air purifying preparation can be used for purifying polluted air and removing dust in a haze environment as well as photo-catalytically degrading and separating nitric oxide, sulfide or other organic pollutants in the polluted air.

The invention provides a bi-power combined type air purifier. The air entering from an air suction inlet is purified deeply by entering a specially made composite particle filter screen after purified by a multilayer filter screen, then enters the bottom of a liquid chemical water tank capable of thoroughly decomposing residual harmful substances such as formaldehyde and passes an air wet-balance filter screen to be purified by natural negative ions under irradiation of a crystal gypsum lamp, and the air is deeply purified again by the specially made composite particle filter screen after passing the multilayer filter screen. The bi-power combined type air purifier overcomes the defect that a conventional air purifier cannot thoroughly purify poisonous components in the air in large area without dead corners by using the multilayer filter screen and a single activated carbon screen to adsorb air dust and harmful substances around the purifier only. The bi-power combined type air purifier integrates functions of dust adsorption, air purification, sterilization, decomposition and elimination of harmful peculiar smell such as formaldehyde, air humidification and natural air purification, and air purification degree is twice improved as compared with that of conventional products.

The invention relates to the field of air purification, and particularly provides an adsorptive catalyst, and a preparation method and application thereof. The adsorptive catalyst comprises a structured carrier and a coating distributed on the inner surface and/or outer surface of the structured carrier; the total weight of the coating is standard, and the coating comprises 50-95% by weight of hydrophobic silica and 5-50% by weight of catalytically active components capable of oxidizing gaseous pollutants. The invention further provides an air purification device, and an air purification method and application thereof. The adsorptive catalyst provided by the invention can enhance the adsorption and diffusion processes of the gaseous pollutants, especially non-polar gaseous pollutants, in porous channels of the adsorptive catalyst to realize an excellent catalytic purification effect, and is particularly suitable for catalytic purification reactions under high-moisture and high-humidity working conditions. The preparation method is simple in process and low in cost and has the industrial production potential.

An apparatus for the decontamination of air, the apparatus comprising a housing (1) having an air inlet (4) and an air outlet (6) with an air passage (2) there between, means (20) for directing a stream of air through the housing, the housing containing a non-thermal plasma cell (30), an ultraviolet emitting device (40) and an ozone depletion catalyst (42), the non- thermal plasma comprising an anode (32), a dielectric (32) and a cathode (33), the cathode being in the form of a meshed enclosure which surrounds the ultraviolet emitting device and ozone depletion catalyst to form a reaction chamber and Faraday cage. The non-thermal plasma cell may also be provided as a columnar cell for forming an array of cells and the dielectric may comprise water droplets to improve the efficiency of the device.

The invention discloses an air purifying material of microorganism absorption degradation, a preparation method and applications thereof. The air purifying material of microorganism absorption degradation is obtained by embedding biological grains with 2 to 4mm grain diameter of pseudomonades or acinetobacter which are cultured and acclimatized in a crosswise way in calcium alginate gel. The air purifying material of microorganism absorption degradation can be used in the long time purification of formaldehyde and benzene series pollution in rooms with obvious effect. The product has the advantages of high activity of immobilized cells, good stability, effectively reducing the content of chemical pollution of formaldehyde and benzene series pollution in rooms, being beneficial for realizing the recycling, regenerating and reusing of biocatalysts, and seriously avoiding the pollution to room environment by microorganisms. The raw material has low cost, the preparation process is simple, easy and convenient in operation, and product can be applied in different reactors.

The invention relates to the air purification field and particularly provides an air purification device. The air purification device comprises a pre-filtering screen, a dehumidification unit and a purification unit which are sequentially arranged in the air flowing direction; the pre-filtering screen is used for trapping particulate matter in air; the dehumidification unit is used for removing humidity in air; the purification unit is used for purifying air passing through the dehumidification unit; a blower for guiding air to flow is arranged on the upstream side of the dehumidification unit. The invention further provides an air purification method and application of the air purification method. The air purification method comprises the following steps: removing particulate matter in air to be humidified; dehumidifying air from which particulate matter is removed; under the heating condition, purifying the dehumidified air to oxidize gaseous pollutants in air into carbon dioxide. According to the air purification method, owing to the dehumidification-catalytic purification coupling action, the catalytic effect of a catalyst is greatly improved, the service life of the catalyst is greatly prolonged, and accordingly, the operation and maintenance costs are reduced.

The invention discloses a botanic adsorption material and application thereof. The botanic adsorption material is prepared by the steps of performing enzyme inactivation on capsules of pomelo peels, sterilizing and processing, has a porous structure, can effectively remove peculiar smell and harmful gas, and can be applied to the fields of indoor air purification, automobile deodorization and the like. The technology for processing the adsorption material is simple, high in biocompatibility and biodegradability, excellent in usability, broad in application range, and high in added value; and moreover, a byproduct, namely the pomelo peels generated in the deep processing of pomelos can be quickly and massively utilized, so that the technical level and economic benefit of the pomelo processing industry are promoted.

The invention discloses a functionalized graphene modified air filter membrane and a preparation method thereof, and a high-efficiency and low-resistance nano fiber composite filter membrane. The composite filter membrane comprises two parts including a non-woven fabric substrate supporting layer and an electrostatic spinning composite fiber compact layer, functionalized graphene adjusts the structure of a compact separation layer, fiber and beaded structures generate a molecular slippage effect, and therefore air resistance of the filter membrane is remarkably reduced; and besides, the high surface area and abundant surface functional groups of the functionalized graphene improve the air filter efficiency of the filter membrane. The preparation method of the air filter membrane comprisesthe following steps: preparing a mixed solution of the functionalized graphene and a polymer with different concentrations, taking non-woven fabric as a receiving substrate, and preparing the nano fiber composite filter membrane by adopting an electrostatic spinning method. The filter membrane can filter fine particles in air such as smoke, pollen and PM2.5, realizes air purification, can also beused for personal protective devices (such as masks), and is beneficial for human health.

The invention discloses an air-purification environment-friendly paint and a preparation method thereof. By using a water-based fluorocarbon resin emulsion as a film forming matter and an anatase sulfur/lanthanum-codoped nano titanium dioxide photocatalyst as an addition component of the paint, the air-purification internal wall paint with excellent self-cleaning property is prepared. The paint has the advantages of favorable scrub resistance, high adhesion, high paint film fullness, environment friendliness and excellent air purification photocatalytic performance, and has antimicrobial and moldproof functions. Under the irradiation of visible light, the catalytic degradation purification rate for formaldehyde and other gaseous pollutants caused by interior decoration can reach 80% above; and under the condition of no lighting, the sterilization rate for Staphylococcus aureus in the environment can reach 98% above.

The invention discloses an indoor air purifying method and an indoor air purifying device. A primary strainer, a barbed nail corona discharging electrode, a mesh grounding electrode, a filling layer and a mesh charging electrode, wherein the filling layer is filled with high-power medium particles; the mesh charging electrode is arranged at the rear end of the filling layer; the mesh grounding electrode is arranged at the front end of the filling layer; the mesh charging electrode is in external connection with a high-voltage pulse electrostatic generator through an insulated conductor; the mesh grounding electrode is in external connection with the ground through an insulated conductor; the outer wall of the primary strainer clings to the inner wall of an absorbing barrel; and the barbed nail corona discharging electrode is arranged in space between the primary strainer and the mesh grounding electrode and is connected with the high-voltage electrostatic generator positioned outside the absorbing barrel. Dusty airflow and high-power medium balls are respectively treated by a corona discharging method and a pulse corona discharging method, and bacteria are effectively killed by streamer corona generated on surfaces of the medium balls while the particles are absorbed by the streamer corona.

The invention discloses a method and a device for measuring sulfur content in coal by ultraviolet absorption spectroscopy. In the measurement method, the decomposition scale and a threshold are determined adaptively by combining empirical mode decomposition with 3sigma criterion, and non-stationary characteristics of differential absorption degree per se can be fully retained, so the spectral interference problem caused by dust, water vapor and background gas in combustion gas is effectively solved; the instantaneous concentration of SO2 is obtained through calculation according to the differential absorption degree after noise reduction and trend term removal, and the total sulfur content accumulated in the coal sample combustion gas is calculated through the gas flow; the sulfur content in the coal can be obtained by dividing the coal sample amount by the total sulfur content separated from the coal sample combustion; and the pretreatment process needed to be performed on the combustion gas by coulometric titration and an infrared absorption method is avoided. The device for measuring the sulfur content in the coal by the ultraviolet absorption spectroscopy comprises a combustion furnace, a measuring chamber, an ultraviolet light source, a spectrometer, an air purifying device, a flow meter, a waste gas treatment device, a computer, and the like.

The invention discloses an air purifying agent and a preparation method and application thereof, belonging to the field of everyday use chemicals. The air purifying agent is prepared form the following raw material formulas according to the weight ratio, wherein the raw material formula 1 comprises the following components of 8-16 percent of sodium chlorate and 0.5-1.5 percent of cane sugar; the raw material formula 2 comprises the following components of 1-4 percent of potassium polyacrylate, 2-5 percent of sodium polyacrylate, 4-8 percent of particular water-absorption type resin, 1-3 percent of guar gum and the balance of water. The air purifying agent obtained in the method has the characteristics of long duration time and low cost, can effectively remove toxic and harmful gases, can carry out sterilization and deodorization, rotatably releases during using without construction of specialized personnel, and is convenient for carrying.