93 results about "Air pollutants" patented technology

This invention relates to the field of air pollutant detection technology and discloses a method for detecting excessive emissions of air pollutants. The method includes: acquiring pollutant concentration data from multiple monitoring points in a target area to form a raw dataset; performing outlier detection and correction, removing sensor malfunction outliers to obtain a preprocessed dataset; extracting concentration change trend characteristics within a preset time window for each monitoring point to construct a spatiotemporal feature matrix; inputting the matrix into a pollutant diffusion model to calculate the transmission paths and intensities between monitoring points, generating a regional transmission network; identifying potential source areas of abnormal pollutant concentration fluctuations based on the network and marking them as candidate areas for verification; performing multi-scale concentration gradient analysis on the candidate areas to determine key monitoring areas; deploying mobile equipment in the key monitoring areas to collect high-precision component data; comparing this data with a standard emission source feature library, matching emission source types with similarity exceeding a threshold, determining whether emissions exceed standards, and generating a detection report.

The invention discloses a geographic meteorological multi-mode fusion air pollutant monitoring data completion method and device, and belongs to the technical field of deep learning and data processing. The method comprises the following steps: acquiring geographic space information, meteorological information and air pollutant monitoring data of a target area; performing space-time alignment and cleaning on the multi-modal data; constructing a space-time diagram structure, extracting spatial features by using a diagram convolutional network, and enhancing time features in combination with a long-short term memory network and an attention mechanism; multi-scale features such as space, time, weather and time embedding are fused through a multi-layer perceptron, and site spatial correlation and time dynamics are captured; according to the method, a condition diffusion model conforming to multi-modal information feature constraints is constructed, and high-precision complementation of missing data is realized through an iteration process of forward noise addition and reverse denoising under the guidance of fusion features. According to the method, geographic and meteorological multi-modal information is fully fused, and the space-time consistency and the physical rationality of a completion result are remarkably improved.

1. Name of the design product: waste gas electric purification bin. 2. Use of the design product: used for purifying air pollutants such as dust, PM2.5, malodor, odor, organic volatile matter, VOCs, etc. generated in industrial or commercial activities. 3. Design points of the design product: in shape. 4. Picture or photo that best indicates the design points: perspective view.

The invention discloses a VOCs waste gas continuous treatment device and method based on secondary activated carbon adsorption in the field of air pollution treatment, and aims to solve the technical problems that an existing VOCs waste gas treatment process depends on a boiler, treatment is discontinuous, the investment cost is high, and adaptability is poor. According to the device, an original gas collection pipeline and a fan of an enterprise are reformed, and a first-stage granular activated carbon adsorption unit and a second-stage fine-particle-size activated carbon adsorption unit are connected in series to form a closed-loop treatment system of collection, graded adsorption, pressure-boosting discharge and maintenance and update; according to the treatment method, continuous deep purification of the VOCs waste gas with medium and low concentration is realized by controlling the retention time of the waste gas in the two-stage adsorption unit and the particle size gradient of the activated carbon. The investment is less than or equal to 10 thousand yuan, the treatment gas amount is 8000m / h, the NMHC emission concentration is less than or equal to 50mg / m, the secondary standard of the table 2 of Integrated Emission Standard of Air Pollutants (GB16297-1996) is met, the device can continuously and stably run for more than or equal to 6 months in 24 hours, and the device is adaptive to the waste gas treatment requirements of chemical devices such as acetic acid, methanol and the like.

This invention proposes a multi-parameter monitoring data calibration method based on a teacher-student model. The steps are as follows: First, acquire and preprocess time series related to multivariate air pollutants from multiple air quality monitoring devices to obtain multivariate time series. These multivariate time series and their corresponding actual concentrations constitute an air quality monitoring device dataset. Second, use the dataset from a reference air quality monitoring device to construct a supervised dataset to train a cloud-based teacher model, optimizing the model parameters using the AFSA algorithm. Third, select multivariate time series from relatively stable periods as local training samples, inputting the predicted concentrations obtained from the trained cloud-based teacher model as labels to train a student model. Fourth, use the AFSA algorithm to optimize the model parameters. Finally, use the student model to process the real-time collected time series to obtain the prediction results. This invention enables automated calibration of air quality monitoring device data, effectively improving data accuracy and management efficiency.

Disclosed is an energy-independent smart port system using SMR-based surplus power. When an SMR-powered vessel docks at a port while the reactor is in operation, the energy-independent smart port system uses relevant technology and equipment to supply surplus power from the SMR-powered vessel to the port in consideration of safety regulations and the characteristic that restarting the reactor of the SMR-powered vessel requires significant time and cost, stably increase the energy independence of a smart port, and can reduce marine air pollutant emissions.

The invention belongs to the technical field of post-treatment, and particularly relates to waste gas comprehensive treatment equipment and method.The equipment comprises a smoke suction hood, a cyclone spray tower, an electrostatic adsorption device and a centrifugal fan which are sequentially connected through a pipeline, and further comprises a first filter box, an evaporation barrel and an oil storage barrel which are sequentially connected with the electrostatic adsorption device; wherein the smoke suction hood is arranged corresponding to the oil press, the centrifugal fan is connected with the smoke exhaust barrel, and waste gas generated by the oil press enters the smoke suction hood under the driving of the centrifugal fan, is treated by the cyclone spray tower and the electrostatic adsorption device in sequence, and is discharged from the smoke exhaust barrel through the centrifugal fan. Waste oil obtained by adsorption of the electrostatic adsorption device is stored in the oil storage barrel after being treated by the first filter box and the evaporation barrel. The equipment can purify air pollutants such as oil drops, dust, particulate matters and VOCs in waste gas, so that the waste gas is discharged after reaching the standard, waste oil can be recycled from the waste gas, resources are recycled, and the environment-friendly treatment cost is reduced.

The utility model provides an opening and closing mechanism for a weather conversion device of a shielding door, which belongs to the technical field of metro shielding doors and comprises a mounting frame, surfaces of two sides of the mounting frame are rotatably connected with a plurality of rotating shafts, inner sides of the rotating shafts are fixedly connected with two adjusting fan blades, surfaces of the adjusting fan blades are fixedly provided with connecting arms, and the connecting arms are fixedly connected with the rotating shafts. A plurality of connecting arms are arranged at the bottom of the mounting frame, a connecting plate is arranged on the surfaces of the connecting arms, an adjusting assembly used for driving the connecting plate to move is arranged on one side of the mounting frame, and a dust removal assembly is mounted at the bottom of the mounting frame. The connecting plate moves to drive the rotating shaft and the adjusting fan blades to conduct angle adjustment under the action of the connecting arm, so that opening and closing are achieved, then negative ions are blown out through the dust removal assembly, pollutants in the air can be combined and become heavy to be settled to the ground, and therefore harm of the pollutants to the human body is reduced, and the practicability of the mechanism is improved.

The invention relates to a plant carrier in-situ monitoring method for atmospheric polycyclic aromatic hydrocarbons and derivatives thereof based on usnea spinifera, and belongs to the technical field of monitoring methods. The technical problems that an existing PAHs monitoring method needs to be supported by an environment monitoring station and an atmosphere monitoring sampler, a large amount of labor and cost are consumed, and large-scale pollution monitoring of PAHs and SPAHs in remote mountainous areas is not facilitated are solved. The method comprises the following steps: cleaning, freeze-drying, crushing and sieving usnea spinifera to obtain an usnea spinifera powder sample, extracting, drying and concentrating to obtain an extracting solution; then loading the extract to an activated silica gel column for elution, and carrying out gas pushing on the obtained eluent; and finally, concentrating the gas-pushed liquid, and carrying out gas chromatography-triple quadrupole mass spectrometer detection. According to the method, usnea spinosa is used as an air pollutant accumulation carrier, large-area high-resolution monitoring of PAHs and SPAHs pollution in remote mountainous areas can be completed, and effectiveness and accuracy are high.

This invention relates to the field of air pollutant control and environmental protection materials technology, and discloses a low-temperature oxidation adsorbent and its application in flue gas NO. X The deep denitrification process utilizes a low-temperature oxidation adsorbent comprising an amino-functionalized micron-sized diatomite core layer and an aldehyde-functionalized nano-manganese-cerium composite oxide active shell layer. The core layer and the active shell layer are bonded by Schiff base covalent bonds formed by the condensation of amino and aldehyde groups, and C=N covalent bonds are formed at the interface between the two phases, constructing a micro-nano hierarchical composite material with integrated adsorption and catalysis functions. The micro-nano dual-scale rough structure on the surface of this material, along with the synergistic effect of low surface energy phenylsiloxane and diundecyl long-chain hydrophobic groups, endows the catalyst with excellent hydrophobic properties. Under harsh high humidity conditions of 100℃ and 10-20 vol% H2O, the catalyst can still maintain a denitrification rate of over 81%, and the activity loss rate is significantly lower than that of traditional physical mixed catalysts, effectively coping with fluctuations in industrial high-humidity desulfurization flue gas.

This invention discloses a method and system for assessing tunnel smoke conditions, belonging to the field of traffic management technology. The method includes: simulating predicted diffusion data of air pollutants in the current tunnel using the lattice Boltzmann method, which can accurately simulate the diffusion of air pollutants and facilitate subsequent analysis; acquiring environmental parameters of the current tunnel to correct the predicted diffusion data, which can improve the accuracy of the predicted diffusion; simulating the discrete migration behavior of moving units in the tunnel based on cellular automata and two-dimensional grids, which can simulate the behavior of moving units in the tunnel and facilitate the determination of the development of the situation; and establishing a tunnel smoke accident situation assessment model based on fuzzy hierarchical analysis, which combines the predicted diffusion data, the environmental parameters, and the discrete migration behavior to output an assessment value, which can numerically describe the changes in the accident situation.

The invention provides sintered serpentine particles, a preparation method, an application method and a negative oxygen ion generator, and belongs to the field of mineral processing and air improvement. The preparation method comprises the following steps: crushing, grinding and sieving natural raw serpentine to obtain serpentine powder; adding a sintering aid into the serpentine powder to obtain mixed powder; atomizing water is used as a binder, the mixed powder is granulated, and a granular blank with the preset particle size is obtained; drying until the moisture content of the particles is less than or equal to 8%, and sintering at the temperature of 1000-1200 DEG C to obtain sintered serpentine particles, so that the negative oxygen ion release capacity of the particles is fully activated, and meanwhile, the adsorption capacity of air pollutants is enhanced; the prepared sintered serpentine particles have stable and lasting negative oxygen ion release capability; the method is applied by preparing a negative oxygen ion generator. According to the high-serpentine-content spherical particles and the negative oxygen ion generator, the negative oxygen ion release capacity is improved.

The present invention relates to a low-concentration air pollutant selective detection device and, more specifically, to a low-concentration air pollutant selective detection device capable of detecting a low-concentration air pollutant with high sensitivity, and selectively detecting an air pollutant when necessary. The low-concentration air pollutant selective detection device of the present invention comprises: a sensor which is located in a flow path, through which the gas moves, to detect contaminants in the gas; and a concentrator part which, by including an adsorbent that is positioned in the flow path of the gas that moves to the sensor and adsorbs contaminants in the gas, and a desorption means that is positioned adjacent to the adsorbent to individually desorb different contaminants from the adsorbent, delivers the concentrated contaminants to the sensor.

The utility model relates to the technical field of masks, and discloses a mask capable of reducing the bending strength of a nose bridge shaping strip area to improve the fitting degree, which comprises a main body, an inner layer, an outer layer and a plurality of middle layers clamped between the inner layer and the outer layer, and is used for filtering air pollutants; the glasses further comprise a nose bridge shaping strip and a wearing piece. At least one layer of the top of the main body is downwards reduced to the lower part of the nose bridge shaping strip and is used for reducing the thickness of the mask in the region. Firstly, main body edge stacking is reduced through structural design, the nose bridge shaping strip of the mask is thinned independently, the mask with the thin edge is easier to deform along with the facial contour, gaps are reduced, and air tightness is ensured. Other areas maintain the original thickness so as to maintain the overall protection performance. And secondly, after a plurality of middle layers of the mask are added, the strength of the nose bridge shaping strip does not need to be increased, and the cost is saved.

The invention relates to a compact air purification device based on ion thruster technology During operation, the ion thruster generates ozone (O₃) as a byproduct of oxygen ionization. This ozone is directed into a reaction chamber where it oxidizes volatile organic compounds (VOCs) and other airborne pollutants. The system eliminates the need for external fans or filters by using the natural airflow created by the thruster itself. Key components include an ionization chamber, a grounded copper ring, a high-voltage accelerator grid, and a downstream reaction zone. The device operates effectively in low-humidity environments, where ozone remains stable and highly reactive. This integration of aerospace propulsion and environmental chemistry offers a novel, energy-efficient solution for air treatment in enclosed or emergency settings. The invention is suitable for use in homes, laboratories, industrial spaces, and mobile purification units.

To provide an indoor air cleaning network system applied to an application for detecting and cleaning air pollution and bringing the air pollution close to zero.SOLUTION: A plurality of gas sensors, at least one gas molecule control device and a network connection type cloud computing device are installed in an indoor space, and the gas sensors arranged in the indoor space and an outdoor space and the gas sensors installed inside the respective gas molecule control devices are linked by a cloud network to intelligently form a link system, the start of the gas molecule control devices is linked and controlled in real time, and the air quality of the indoor space is monitored anytime and anywhere. Each gas molecule control device includes at least one blower, at least one filter unit, and at least one drive controller, and introduces and detects an air pollutant by network control and performs purification filter processing to bring the air pollutant close to zero, thereby achieving cleanliness of a clean room level.SELECTED DRAWING: Figure 1A

Use of charging air contaminants by a plasma generated in ambient air by a plasma generating unit (1100, 2100, 3100, 4100, 8100, 9100) in order to provide charged air contaminants for subsequent collection in a collection unit (1100, 2100, 3100, 4100, 8100, 9100). A method of treating ambient air using the air purification system (10, 800) to reduce the concentration of air contaminants therein, an air purification system (10, 800) and an air purification apparatus (900) for use in the method are also described.

The utility model relates to the technical field of adsorber equipment, in particular to an activated carbon adsorber for preventing and treating air pollutants in public places, an annular frame and an annular activated carbon adsorption plate are arranged in a tank body, the annular frame is positioned on the inner side of the annular activated carbon adsorption plate, a plurality of air suction holes are formed in an air suction plate, and the annular activated carbon adsorption plate is positioned on the inner side of the annular activated carbon adsorption plate. Air enters the tank body from the air inlet pipe on the top cover, after the air enters the tank body, due to the action of the air suction plate at the air suction end of the air guide pipe, the air is sucked into the air guide pipe through the air suction holes in the air suction plate, and the air sucked into the air guide pipe is gathered through the flow dividing box and is discharged from the air suction pipe; and then the activated carbon is purified by the annular activated carbon adsorption plate, so that particles attached to the activated carbon adsorption plate are reduced, and the cleaning frequency of workers can be reduced.

An apparatus is provided for preventing the spread of air-borne contaminants in a defined space. The apparatus comprises an air flow outlet adjacent to or within the defined space, an air flow inlet adjacent to or within the defined space, and a conduit for transporting air from the air flow inlet to the air flow outlet. An air treatment module is provided within or adjacent the conduit for extracting air-borne contaminants from air transported from the air flow inlet to the air flow outlet. The air flow outlet deposits air into the defined space substantially evenly across an outlet area.

An apparatus and methods are provided for a reusable multi-pocket V-bank air filter to remove contaminants from air within interior building environments. The air filter includes multiple reusable filter bags for filtering an airstream. A frame supports the filter bags in V-configurations within an HVAC system. Adjacent filter bags are offset from one another and extend in the V-configurations downstream of the frame when the airstream flows into the filter bags. Elongated openings in the frame allow the airstream to flow through the frame into the filter bags. The elongated openings include filter bag retainers for individually coupling the filter bags with the frame. The filter bags can be removed from the frame for servicing without removing the frame from the HVAC system. The filter bags can be cleaned by removing them from the air filter, flushing contaminants from the filter bags, and allowing the filter bags to dry.

This invention discloses a method for preparing a low-temperature water-resistant molecular sieve catalyst for the purification of multiple air pollutants. A silicon source, aluminum source, alkali source, water, template agent, metal salt, and phosphoric acid are aged and crystallized to obtain product A. This product A is then reacted in an acidic solution to obtain product B, followed by reaction in a metal solution to obtain product C. Ammonium and copper exchange processes are then performed to obtain the low-temperature water-resistant molecular sieve catalyst. This invention utilizes a synthesis strategy combining d-band center regulation with in-situ introduction and directional doping of molecular sieve confinement effects. Highly dispersed and electronically optimized metal cluster active sites are constructed within the molecular sieve cage. This design enables the catalyst to heterolytically dissociate water at low temperatures, generating highly active hydroxyl groups and protons, significantly enhancing the long-term water resistance of the catalyst in denitrification reactions, greatly improving the migration and reaction efficiency of oxygen species, and thus driving the efficient oxidation of CO at low temperatures.

The utility model discloses a livestock shed heating device with a filtering function, and belongs to the technical field of heating devices. In order to solve the technical problem that traditional heating equipment cannot effectively purify air in the livestock breeding process, a hot air system with an integrated filtering structure is arranged at the air inlet end of a livestock shed body. According to the technical scheme, the air heater is characterized in that a filter pipe is arranged at the input end of the air heater, detachable metal grid filter screens are sequentially arranged in the filter pipe to intercept large-particle dust, and an HEPA filter element, an activated carbon layer and a photocatalyst screen loaded with nanometer titania are installed through a slot type structure to achieve the particle filtering function, the harmful gas adsorption function and the photocatalytic decomposition function respectively; the air outlet end is provided with a chemical catalyst net with an ozone decomposition catalyst, and rapid disassembly and assembly are achieved through a buckling structure. According to the device, through a purification system combining physical filtration and chemical catalysis, heat energy needed by the livestock shed is provided, meanwhile, the concentration of air pollutants is effectively reduced, and the transmission risk of respiratory diseases of livestock and poultry is reduced.

The invention relates to a method and a device adapted for the selective counting of individual respiratory droplets and particles comprising water within ambient air. The method is based on a planar capacitive sensor to which droplets and particles are led with a nozzle, which increases their velocity. Entering the electric field of the capacitive sensor, the respiratory droplets and particles change the sensor's capacitance. Because the respiratory droplets and particles containing water exhibit a notably distinct dielectric constant compared to other airborne particles and the air itself, they are counted in a selective way independently on other particulate matter air pollutants. The alteration in the capacitance is converted into an electrical signal, which is measured by known methods.

The application provides a method for tracing air pollutants by using bubbles with different sizes and densities, comprising the following steps: determining a target density value of a tracing bubble according to the density of a gaseous pollutant to be traced, or determining the target density value of the tracing bubble according to the aerodynamic diameter of a solid particle-shaped and droplet-form pollutant to be traced; preparing the tracing bubble with the target density value, and releasing the tracing bubble in air of a test area; collecting position information of the tracing bubble in the test area; and determining a motion direction, a motion trajectory and a motion speed of the tracing bubble in the test area according to the position information. The method for tracing air pollutants by using bubbles with different sizes and densities solves the problem of tracing particulate matters and gaseous pollutants carried in air.

This application relates to a humidifier filter structure, including a filter support with at least one air inlet on its side wall. The air inlet has a first mounting groove and a second mounting groove arranged sequentially along the airflow direction. A purification filter is detachably embedded in the first mounting groove for filtering air pollutants entering the humidifier. A humidifying filter is detachably embedded in the second mounting groove for humidifying the filtered air. This application aims to solve the technical problem of traditional filter structures lacking air purification capabilities.

This invention relates to the field of cosmetics, specifically to a skincare composition for combating environmental pollution. The composition comprises rice germ extract and a mixture of rice extracts, a mixture of *Chlorella vulgaris* extract and *Lithocarpus stolonifera* extract, *Microcystis globosum* extract, and a mixture of olive fruit water and olive fruit extract as main active ingredients. Through a rational ratio of these components, the resulting composition can isolate air pollutants, inhibit their adhesion to sebum, prevent them from penetrating the skin, and effectively reduce sebum secretion by decreasing the size and number of facial pores. It also increases the skin's tolerance to irritants, enhances antioxidant capacity, and reduces the likelihood of inflammation caused by sebum peroxidation. Furthermore, it improves cell viability to resist air pollutants.

The invention provides an adsorbent for synchronously controlling indoor humidity and volatile organic pollutants, and a preparation method and application thereof, and belongs to the field of adsorption of pollutants in ambient air. The method comprises the following steps: dissolving aluminum nitrate, glycine and aminoterephthalic acid in a solvent, stirring and dissolving to obtain a solution A; adding sodium hydroxide into absolute methanol while stirring to obtain a solution B; dropwise adding the obtained solution B into the solution A in the step 1, and mixing and stirring to obtain a turbid solution C; pouring the obtained turbid solution C into a polytetrafluoroethylene reaction kettle, and then putting the polytetrafluoroethylene reaction kettle into a drying oven to obtain a turbid solution D; and carrying out centrifugal solid-liquid separation on the turbid solution D, pouring out the upper solution to obtain a bottom primary product, carrying out centrifugal cleaning on the primary product to obtain light red wet gel, and drying to obtain the adsorbent. The prepared adsorbent has the advantages of being simple in synthesis method and low in cost, synchronous adsorption control over humidity and volatile organic pollutants can be achieved, and rapid desorption regeneration and recycling can be achieved.

The utility model discloses a kind of composite processing purification devices of mute safety, belong to air purification technical field, including device pipe body, the inside detachably installation of device pipe body one end has primary filter element, fan is installed in the front of primary filter element, insulating cover is installed in the front of fan, high-voltage electrostatic precipitator is detachably installed in the inside of insulating cover, soundproof board is installed in the front of high-voltage electrostatic precipitator, adsorption decomposition co-effect filter element is installed in the front of soundproof board, gathering cover is installed in the front of adsorption decomposition co-effect filter element;The utility model, by primary filter element filtering solid-state foreign matter, high-voltage electrostatic precipitator adsorbs fine particulate matter, adsorption decomposition co-effect filter element removes gaseous pollutant, cooperate anion generator and anion emitter in gathering cover improve air and inhibit microorganism, and many components are cooperated to realize the comprehensive treatment to air pollutant, and the purification effect is greatly improved.

The utility model relates to the technical field of air ventilation and exhaust devices, in particular to an indoor air pollutant ventilation and exhaust device which comprises an exhaust hood, an axial flow fan is arranged on the exhaust hood, an installation shell is arranged at the bottom of the exhaust hood, a plurality of clamping blocks are evenly arranged at the top of the installation shell, and clamping grooves matched with the clamping blocks for use are formed in the bottom of the exhaust hood. A cavity is formed in the side wall of the mounting shell, a supporting rod, a sliding plate and an inserting rod are arranged in the side wall of the mounting shell through the cavity, the mounting shell is provided with an air guide plate and a first gear through a mounting shaft, and a first rack is arranged in the mounting shell through a sliding rail. According to the air exhaust device, the installation shell can be conveniently disassembled by workers, meanwhile, the installation quality of the installation shell is guaranteed, in addition, due to the quick disassembly type structure, the workers can conveniently conduct overhaul and daily maintenance work on the air exhaust device, and then the use efficiency of the air exhaust device is guaranteed.