1219 results about "Air decontamination" patented technology

The invention provides an air purification system and method for combining filtration, ultraviolet irradiation, and photocatalysis, in an annular geometry that maximizes the photocatalytic efficiency of the ultraviolet light in the deactivation of microbes and the photocatalysis of volatile compounds.

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.

A wall- or surface-mounted light fixture with a housing containing one or more external visible light sources to illuminate the space where the light fixture is mounted, one or more UV emitters inside the housing to destroy bacteria and pathogens, and one or more fans inside the housing that recirculate the air in a space and subject the air to the UV radiation inside the housing, destroying bacteria and pathogens in the air passing though the housing.

The present invention relates to a titanium dioxide material for coating on a substrate and method of making the same. The coated material is resistant to delamination and can be used for air-purification purposes.

An air filtration and exhaust system is described. The system comprises a microcontroller, a power supply, and a series of sensors that detect the presence of airborne contaminants such as ultra fine particles, smoke, natural gas and radon gas. In the presence of these airborne contaminants, the system is designed to inactivate and prevent operation of nearby food preparation appliances. Once these contaminants have been safely removed, the operation of these appliances is restored. In addition, the ventilation system may be equipped with a purification subassembly, which safely and efficiently removes such containments from the area. The system may also comprise an alarm that is activatable in the presence of these contaminants.

Process of reducing water, CO2 and N2O in feed air, which: a first adsorbent such as alumina (25-40% volume) and a second adsorbent such as X zeolite (60-75% volume) are used; the online time of the adsorbent is determined by determining the concentration measured by an analyzer for CO2 concentration at a position within the length of the second adsorbent when a maximum level of N2O is simultaneously obtained at the downstream end of the second adsorbent in the feed direction, wherein the online time is the time taken from commencing passing the feed air to the first and second adsorbents to the measurement by the analyzer of the determined concentration of CO2; at least the second adsorbent is regenerated by heated regeneration gas at a temperature of 140° C.-220° C.; and the molar ratio of the regenerating gas to feed air supplied during one iteration of the cycle is 0.08-0.5.

The invention discloses a control method based on an air conditioner, the air conditioner, a home system and a storage medium. The control method can be applied to the intelligent home system composedof the air conditioner and other home appliances. By monitoring the carbon dioxide concentration changes of all areas in a room, when the carbon dioxide concentration of any area in the room is larger than a preset threshold value corresponding to the current point-in-time, the outdoor air quality is detected, a fresh air ventilation command or an air purification command is output according to the detected outdoor air quality, the corresponding fresh air ventilation operation or air purification operation is carried out so that the indoor air quality can be improved, and thus the situation that the carbon dioxide concentration is too high and consequently the health of human beings is threatened is avoided.

A fluid purifying device having various embodiments, each of which is capable of removing airborne molecules, such as contaminants, malodors, volatile organic compounds (VOCs), pathogens, mold and bacteria, using the combination of visible light and a photocatalyst that has been either treated with a photosensitizer or has been treated in some other manner to lower the energy required to activate the photocatalyst (i.e., by having it generate free radicals) to that emitted by visible light bulbs. Preferably, the device is an air purifying device; however, the device could also be used as a liquid (e.g., water) purifying device.

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.

A variety of transportable air treatment system improvements are described. In one aspect of the invention, the system is designed to significantly reduce the noise generated during operation. In another aspect, an easily removable cooling unit is provided. In still another aspect, an air treatment unit (as for example a plasma reactor) is provided that is arranged to filter the air stream, inactivate biological organisms and / or reduce or eliminate volatile organic compounds (VOCs) that are carried in the air stream. The air treatment unit may take the form of a plurality of stacked trays. In yet another aspect of the invention, the air treatment system further includes a duct unit that directs air from the air treatment unit to the treated air outlet. The duct unit is operable to clamp the stacked trays to help seal the stacked trays.

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 discloses an air filtering medium material comprising bird nest type nano fiber materials. The bird nest type nano fiber materials are bird nest type particles which are formed by interweaving nano fibers with multiporous structures and nano particles; the nano particles consist of the same type or different types of substances which form the bird nest type nano fiber materials; furthermore, the bird nest type nano fiber materials can be combined with other active particles to form the multifunctional composite air filtering medium material. Moreover, the invention also discloses an air filtering medium and an air filter which comprise the air filtering medium material as well as an air filtering method adopting the air filter. The air filtering medium material disclosed by the invention can effectively filter toxic gases, including more than 50 types of organic volatile matters, in air; meanwhile, the air filtering medium material can adsorb particle pollutants in air and remove peculiar smell, so that a satisfactory air purification effect can be achieved by one material.

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.

A variety of transportable air treatment system improvements are described. In one aspect of the invention, the system is designed to significantly reduce the noise generated during operation. In another aspect, an easily removable cooling unit is provided. In still another aspect, an air treatment unit (as for example a plasma reactor) is provided that is arranged to filter the air stream, inactivate biological organisms and / or reduce or eliminate volatile organic compounds (VOCs) that are carried in the air stream. The air treatment unit may take the form of a plurality of stacked trays. In yet another aspect of the invention, the air treatment system further includes a duct unit that directs air from the air treatment unit to the treated air outlet. The duct unit is operable to clamp the stacked trays to help seal the stacked trays.

The invention discloses a ceiling with an indoor air purification function comprising a heat-insulating and noise-reducing layer (1), a contaminant absorption layer (2) and an air purifying layer (3) sequentially from interior to exterior. The heat-insulating and noise-reducing layer is a foam glass ceramic board, the contaminant absorption layer is an inorganic mineral coating with an absorption function, and the air purifying layer is a photocatalyst coating. According to the indoor ceiling with the air purification function, by means of factorial production, the foam glass ceramic board with fireproofing, heat-insulating and noise-reducing functions, the aqueous mineral coating with the function of contaminant absorption and the photocatalyst coating with the air purification function are compounded, the indoor air-purifying ceiling is obtained, and using function compounding, construction mounting component basing and construction system integration of environment-friendly building materials are realized.

The invention relates to an air purifying method and an air purifying filter element. The air purifying filter element manufactured by the air purifying method comprises a primary particle filtering layer, a catalytic oxidizing and sterilizing layer, an organic gas adsorbing layer, a high-efficiency filtering layer and an ozone degrading catalyzing layer, wherein the pore diameter of the primary particle filtering layer is greater than or equal to 2.5 micrometers; the catalytic oxidizing and sterilizing layer is loaded with a formaldehyde oxidizing catalyst and a T-shaped tube, a chloride dioxide slow-release tablet is arranged in the T-shaped tube, and the organic gas adsorbing layer comprises adsorbent particles for adsorbing organic gas; the filtering pore diameter of the high-efficiency filtering layer is smaller than 2.5 micrometers; the ozone degrading catalyzing layer comprises a nanometer oxide catalyst for decomposing the ozone into oxygen at normal temperature. The air purifying filter element has the advantages that the breeding of pathogenic bacteria in the air purifying device can be inhibited by the chloride dioxide, and the indoor air quality is further improved; after the chloride dioxide is combined with the formaldehyde oxidizing catalyst, the double functions of reducing the content of formaldehyde and sterilizing bacteria are realized, and the indoor ozone pollution is eliminated.

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 relates to a high-efficiency air purifying agent for removing formaldehyde and odor and a preparation method of the high-efficiency air purifying agent. The high-efficiency air purifying agent is prepared from the following raw materials in percentage by weight: 20 to 40 percent of amino acid, 2 to 5 percent of activator, 2 to 5 percent of dispersant, 1 to 5 percent of permeating agent and the balance of purified water. The high-efficiency air purifying agent disclosed by the invention has the advantages that hazardous substances such as free formaldehyde, benzene, toluene and TVOC (Total Volatile Organic Compound) in air are efficiently removed and decomposed, thereby solving air pollution in a room and a vehicle and achieving the aim of purifying air and removing the odor in 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 discloses an internal and external air purifier with an automatic filter core replacement prompting function. Outdoor air is connected with an outdoor air inlet cavity through a first fan, the outdoor air inlet cavity and an indoor air inlet cavity are connected through a first electromagnetic valve, indoor air is connected with the indoor air inlet cavity through a second fan, the outdoor air inlet cavity is connected with the filter core through a second electromagnetic valve, the indoor air inlet cavity is directly connected with the filter core, an outlet of the filter core is connected with an air outlet cavity through a heating device, an air pressure sensor is arranged on the inner wall of a case, a dust sensor is arranged in the indoor air inlet cavity, a photoelectric sensor is arranged on the filter core, and a control circuit is connected with the photoelectric sensor, the dust sensor and the air pressure sensor, the two fans, the two electromagnetic valves and the heating device. The internal and external air purifier has the advantages that two modes including an internal circulation mode and an external circulation mode and the function of automatically prompting the filter core replacement are realized, the functions of the air purifier are improved, the purification effect is improved in the method aspect, the problems of vitiated air exhaust incapability during window closing, air purification effect reduction during window opening and the like are solved, and convenience is brought for users.

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 provides an experiment cabin system capable of adjusting atmospheric environmental pressure. The system is characterized by comprising an experiment cabin arranged in a constant-temperature constant-humidity environmental chamber and a positive and negative pressure generation unit, a ventilation adjusting unit, an air purification unit, a meteorological sensor and a system control unit controllable both in and out of the cabin, which are arranged to be communicated with the cabin. Compared to the prior art, the invention has the following advantages: 1, the system can realize control of the environment condition of atmospheric pressure in research and experiments on tobacco and is applicable to control of atmospheric pressure in most regions where people live; 2, the inner space of the system is great, which enables a plurality of staff to simultaneously carry out experiments; 3, the comprehensive air purification unit is provided in the cabin, which enables collection and purification of harmful gas generated after combustion of tobacco to be realized; 4, the system is simple to operate and enables single-key operation and comprehensive information prompting to be realized in normal usage; and 5, security design and humanized design of the system are considerate, an automatic safety device is arranged in the cabin, and hand-operated safety devices are arranged in and out of the cabin.