27 results about "Particulate pollution" patented technology

The invention provides an atmospheric environment particulate matter pollution detection method and device, and the method comprises the steps: carrying out the grading analysis of the scattered light intensity at each environment detection point in an environment pollution detection region, and obtaining the particle size distribution characteristics of air particulate matters at each environment detection point in a plurality of particle size intervals; determining a spatial distribution field of the particulate matter concentration in the air based on the particle size distribution characteristics; determining a dynamic correction factor of diffusion and aggregation of particulate matters in the air according to an atmospheric physical state, and further performing dynamic correction on the spatial distribution field based on the dynamic correction factor; performing spatial reconstruction on the spatial distribution field obtained by dynamic correction on a regular grid, and determining the distribution pattern of the air particulate matter concentration in the environmental pollution detection area according to a reconstruction result; and generating a particulate matter pollution index in the environmental pollution detection area according to the distribution pattern. By adopting the scheme of the invention, the reliability of atmospheric environment particulate matter pollution detection can be improved based on particulate matter concentration space reconstruction of multi-point dynamic correction.

The invention discloses a road air particulate matter monitoring and early warning method and system, and the method comprises the steps: receiving multi-source data of a fixed monitoring network, a mobile monitoring network and a video monitoring network, and carrying out the differential self-verification and adaptive calibration of the mobile monitoring data; performing space-time alignment fusion on the calibrated data and fixed and video data to construct a unified space-time data cube; identifying a pollution behavior based on the fusion data and detecting a particle concentration peak value, and performing correlation matching on the two to generate a candidate traceability event; when the composite early warning condition is met, the structured early warning information is automatically triggered and pushed; according to the invention, a cooperative sensing system of fixed vertical monitoring, mobile dynamic sensing and video monitoring is constructed, and adaptive calibration and artificial intelligence visual identification are combined, so that a complete technical closed loop from data acquisition, fusion analysis to traceability early warning is formed; full-process automatic management of monitoring, analysis, tracing and early warning of road particulate matter pollution is achieved, and the intelligent level and response efficiency of urban road environment management are improved.

The invention relates to the technical field of atmospheric pollution monitoring, and provides an atmospheric environment particulate matter pollution monitoring method and system based on multi-source data fusion. The method comprises the following steps: accessing an industrial management database, and establishing a pollution source data set; a sensing grid is configured in the target area, multi-source monitoring identification of atmospheric pollution is carried out, and a pollution identifier is established; configuring an unmanned aerial vehicle flight task according to the pollution identifier, executing flight operation and establishing an additional data set; reconstructing an identifier according to the additional data set, and performing association matching in combination with the pollution source data set; and performing traceability evolution authentication according to a matching result, and reporting a pollution monitoring result, so as to solve the technical problems that the dynamic traceability precision of a pollution source is low and a pollution evolution process cannot be comprehensively and accurately reflected due to insufficient integration of multi-source heterogeneous data in existing atmospheric pollution monitoring. The technical effects that accurate monitoring and positioning of atmospheric environment particulate matter pollution are achieved through cooperation of multi-dimensional data fusion and unmanned aerial vehicle dynamic monitoring, and the traceability of the pollution source is improved are achieved.

The invention provides a gas tank, thin film deposition equipment, a control method and a storage medium. The gas tank comprises a tank body, a cold air pipeline, a vaporization detector and a controller. An air inlet is formed in the box wall of the box body, and a vaporizer of a precursor is arranged in the box body. The first end of the cold air pipeline is connected with a cold air source, the second end of the cold air pipeline is connected with the air inlet of the box body, and a valve is arranged in the cold air pipeline. And the vaporization detector is configured at a gas outlet of the vaporizer. The controller is connected with the valve and the vaporization detector, and is configured to obtain the vaporization rate of the vaporizer to the precursor through the vaporization detector; and the opening degree of the valve is adjusted according to the vaporization rate, so that the environment temperature in the box body is adjusted. The vaporizing rate of the vaporizer to the precursor can be detected, the opening degree of the valve of the cold air pipeline is adjusted accordingly, sufficient vaporizing of the vaporizer to the precursor is ensured, and the problem that particle pollution is introduced into the process chamber due to insufficient vaporizing is avoided.

The utility model discloses an automatic polishing mechanism for material tray landing legs, which comprises a base, a negative pressure box, a support, an abrasive belt and a first lifting driving mechanism, the negative pressure box is transversely arranged on the base in a liftable manner, the support is arranged on the base and located on the rear side of the negative pressure box, a workbench capable of longitudinally sliding is arranged at the top of the negative pressure box, and the abrasive belt is arranged on the workbench. Dust collection holes communicated with the negative pressure box are formed in the workbench at intervals, a sliding rail located above the workbench is horizontally arranged on the front face of the support, sliding bases are arranged on the sliding rail at intervals, the first lifting driving mechanism is vertically arranged on the sliding bases, and idler wheels or pressing blocks are arranged at the bottom of the first lifting driving mechanism. The abrasive belt is rotatably arranged on the support, and the bottom of the abrasive belt passes through the position below the first lifting driving mechanism. By means of the mode, the automatic polishing mechanism for the material tray supporting legs improves the automation level and efficiency, and avoids the problem that particulate matter pollutes the surrounding environment.

The utility model discloses a kind of alternative fuel preburning furnace device, it is related to alternative fuel incinerator technical field, including preburning furnace, the feed inlet connected in preburning furnace one side, the tertiary air inlet connected in preburning furnace top and the exhaust port being set in preburning furnace top one side, one end of the exhaust port is fixedly connected with filter box, the inside fixed mounting of filter box has filter plate, the one side of filter plate movably is provided with brush head, the top fixed mounting of filter box has rotating motor;In the utility model, by setting rotating motor, drive brush head moves in filter box, the residue particles filtered by filter plate are cleaned, and by belt pulley drive driving bevel gear transmission to driven bevel gear, make cam rotate in filter box, protruding block and filter plate abut, residue particles are conveniently dropped to ash box, residue particles are collected and prevented from being discharged to air with waste gas, reduce particulate pollution.

This invention discloses the application of a heteropoly compound / PVA composite in water retention of sandy soil. The invention prepares the heteropoly compound / PVA composite by mixing polymer polyvinyl alcohol with a Standberg-type heteropoly compound or its derivatives, which is then used for water retention in sandy soil. The heteropoly compound / PVA composite of this invention can significantly improve the water and fertilizer retention capacity of sandy soil, and has high adhesion ability. It can withstand strong winds in arid regions, is not easily blown away and loses its effectiveness, and will not disperse into the air causing particulate pollution. After gradually losing water, the sand amendment forms a porous membrane on the surface of the gravel, maintaining the soil's aeration and permeability, and plays a positive role in the restoration of degraded soils in desert areas.

The utility model discloses an ammonium sulfate drying, spraying and water replenishing system which comprises a belt conveyor, a drying bed main body, a heat exchanger, a cyclone dust collector, a water washing dust collector and an evaporation raw water tank, one end of the heat exchanger is connected into heat source steam, the other end of the heat exchanger is connected into a condensation bolt pipe network, the heat exchanger inputs air through the air blower for heat exchange to form hot air, and the hot air enters the drying bed main body, passes through the cyclone dust collector and then passes through the washing dust collector for secondary dust removal. The system has the beneficial effects that the problems of tail gas dust and smell in the ammonium sulfate drying process can be solved, the problems of dust particles and hot gas drifting in the tail gas are solved, crystals in the tail gas are recycled, and particulate matter pollution caused by direct exhaust of the tail gas is reduced; the problem that other water is introduced is effectively avoided, the evaporation water amount of the system is reduced, and water resource consumption of a large amount of spraying water is avoided.

This invention belongs to the field of ambient air quality forecasting technology, and relates to a method and system for forecasting and evaluating atmospheric fine particulate matter pollution processes. The method includes: 1) data acquisition and processing; 2) calculating level accuracy, pollution hit rate, trend consistency rate, and peak accuracy; 3) calculating a comprehensive score of the forecast effect based on level accuracy, pollution hit rate, trend consistency rate, and peak accuracy; 4) analyzing all PM2.5 concentrations within the target time period in the city. 2.5 The forecast effectiveness of each pollution process is calculated into a comprehensive score, and these scores are categorized to allow for horizontal comparison of the forecast effectiveness of different pollution processes. By constructing a comprehensive scoring method based on multi-dimensional evaluation indicators, it can achieve the assessment of PM2.5 levels. 2.5 A quantitative assessment of the overall forecasting effectiveness of pollution processes, filling the gap in PM2.5 prediction. 2.5 There is a lack of comprehensive evaluation methods for the effectiveness of pollution process forecasting.

The utility model provides a waste heat recovery device and a steaming oven comprising the same, the waste heat recovery device is used for the steaming oven, the waste heat recovery device comprises a heat exchange pipe and a water tank, the water tank comprises a water inlet and a water outlet, the water inlet is communicated with a water source, the heat exchange pipe is arranged in the water tank, and the inlet end of the heat exchange pipe is communicated with an exhaust port of the steaming oven; the waste heat recovery device further comprises a filtering device, the filtering device is arranged below the water tank, and the outlet end of the heat exchange pipe is communicated with the filtering device. A heat exchange pipe is arranged in the water tank, heat exchange water in the water tank can make full contact with the heat exchange pipe, the inlet end of the heat exchange pipe communicates with an exhaust port of the steaming oven and is used for receiving hot waste gas generated when the steaming oven works, and the hot waste gas exchanges heat with the heat exchange water in the water tank through the heat exchange pipe. The filtering device is arranged, waste gas obtained after heat exchange is completed is filtered and then exhausted, oil smoke particles in the waste gas are prevented from polluting air, and oil smoke purification of the steaming and baking waste gas is achieved.

The utility model relates to the technical field of traditional Chinese medicine decoction piece processing equipment, in particular to traditional Chinese medicine decoction piece processing equipment with a drying function, which comprises a drying box, a plurality of electric heating pieces are fixedly assembled on the inner wall of the drying box, an air pump is fixedly assembled on the outer wall of the drying box, the exhaust end of the air pump is fixedly communicated with an exhaust pipe, and the exhaust pipe is communicated with the drying box. A processing box is fixedly assembled on the upper surface of the drying box, the side wall of the processing box fixedly communicates with a connecting pipe, the connecting pipe communicates with the drying box, the upper surface of the processing box fixedly communicates with a round frame, and the upper surface of the round frame fixedly communicates with an extension pipe. According to the traditional Chinese medicine decoction piece drying box, by arranging the filter plate, the filter element and other components, when traditional Chinese medicine decoction pieces are dried, the filter plate can block particulate matter with large size in air, the filter element can adsorb and filter fine particulate matter in the air, the filtering effect is guaranteed, the situation that the particulate matter pollutes the environment is prevented, and the practicability of the drying box is improved.

The invention discloses a near-surface particulate matter pollution monitoring method based on multi-task deep learning, belongs to the technical field of particulate matter pollution monitoring, is used for particulate matter pollution monitoring, and comprises sample processing and construction and model construction and training. The sample processing and construction comprises the steps of obtaining ground observation data, obtaining PM concentration, performing space-time matching in combination with a multi-task sample data set, and performing preprocessing on a space-time matching result in combination with stationary meteorological satellite observation data and auxiliary data; the model construction and training comprises the steps of constructing a multi-task deep learning model and training the multi-task deep learning model, the multi-task deep learning model is based on a full-connection neural network, and an output layer of the multi-task deep learning model is divided into two branches which are respectively used for two PM inversion; a double-task loss function is introduced in the training process of the multi-task deep learning model.

The application relates to the technical field of atmospheric pollution monitoring, and provides a method and system for monitoring atmospheric environmental particulate matter pollution based on multi-source data fusion. The method comprises the following steps: accessing an industrial management database to establish a pollution source dataset; configuring a sensing grid in a target area to perform multi-source monitoring and identification of atmospheric pollution and establish a pollution identifier; configuring a flight task of a UAV according to the pollution identifier, performing flight operation, and establishing an additional dataset; reconstructing the identifier according to the additional dataset, and performing correlation matching in combination with the pollution source dataset; performing source tracing evolution authentication according to the matching result, and reporting a pollution monitoring result, so that the technical problem that the dynamic source tracing accuracy of pollution sources is low and the pollution evolution process cannot be comprehensively and accurately reflected due to insufficient integration of multi-source heterogeneous data in existing atmospheric pollution monitoring is solved, the technical effect that accurate monitoring and positioning of atmospheric environmental particulate matter pollution are realized through multi-dimensional data fusion and dynamic monitoring of a UAV is achieved, and the source tracing capability is improved.

The utility model relates to the technical field of plastic tableware raw material stirring equipment, in particular to a raw material stirring device for plastic tableware processing, which comprises a tank body, a wear-resistant layer is attached to the inner wall of the tank body, and a sound insulation layer is attached to the outer side of the tank body; the stirring mechanism is arranged in the tank body; the supporting legs are arranged on the lower portion of the tank body, and dampers are arranged on the lower portions of the supporting legs; the raw material stirring device solves the problem that a traditional raw material stirring device cannot relieve noise pollution and particulate matter pollution.

The invention discloses an on-line ash removal system and method for a flue in a fixed bed desulfurization tower, and belongs to the technical field of industrial flue gas purification, the on-line ash removal system comprises a built-in flow guide device, a pipeline system, a power purification unit and a control system; the built-in flow guide device is arranged in smoke boxes of a flue, and the multiple smoke boxes are connected in parallel through a pipeline system and connected with the power purification unit; the power purification unit and the pipeline system are both connected with the control system; the built-in flow guiding device is composed of a plurality of obliquely-arranged flow guiding plates, the multiple flow guiding plates are all arranged close to the smoke box bottom flat plate area, and a set included angle is formed between each flow guiding plate and the smoke box bottom flat plate, so that the flow guiding plates and the smoke box bottom flat plate form a wedge-shaped channel. Airflow enters from the wide opening of the wedge-shaped channel and is discharged from the narrow opening. The problems that an ash removal device is large in ash removal difficulty and long in shutdown period, and the atmosphere is polluted by particulate matter are solved.

The invention relates to a shield tunnel waste gas purification system and method.The system comprises a purification device, an air inlet shutter, an air outlet shutter, an introduction pipe, an air outlet pipe and a transverse air pipe, the purification device is arranged in a box culvert on the lower portion of a shield tunnel roadway, the air inlet shutter and the air outlet shutter are arranged on the side wall of the roadway, and one end of the introduction pipe is connected with the air inlet shutter; one end of the air outlet pipe is connected with the input end of the purification device through a transverse air pipe, the other end of the air outlet pipe is connected with the input end of the purification device through a transverse air pipe, and one end of the air outlet pipe is connected with the output end of the purification device through a transverse air pipe while the other end of the air outlet pipe is connected with the air outlet shutter; opening or closing of the loop is controlled through the arranged electric air valves, and a purification fan is arranged in the fan loop. The purification device is arranged on the lower portion of the traveling crane plate, the operation states of the bypass loop and the fan loop are dynamically adjusted and controlled in combination with the air volume of the piston, and efficient treatment and energy-saving purification operation of sinking particle pollution are achieved.

An extraction and cleaning device for particle-laden air comprises a housing (1), a blower (2), and, for multi-stage cleaning of the particle-laden air through which it flows in a full stream in a flow-technical sequence, a cyclone separation stage (3), a multi-stage mechanical filter group (4), and an activated carbon filter stage. The cyclone separation stage (3) includes a separating plate (16) that separates two superimposed areas, several individual cyclones (18) flowing through this plate and grouped together to form a cyclone group, connected in parallel in a flow-technical manner, with upward-facing air outlets (19) for the cleaned air, and a distributor (20) to which the individual cyclones (18) are connected. At least part of the multi-stage mechanical filter group (4) is arranged vertically above the cyclone separation stage (3).The distributor (20) of the cyclone separation stage (3) is supplied with flow from below by means of a feed line (24) to the distributor (20) in the lower area of ​​the individual cyclones (18) passing between them.

The utility model discloses a graphite disc cleaning device for improving the appearance of an epitaxial wafer, which belongs to the technical field of semiconductors, and can completely clean particulate matters which are attached to the surface of a graphite disc and are not easy to blow off through the blowing of high-pressure nitrogen and the cleaning of a brush rotating at a high speed, reduce the particle pollution of an epitaxial layer and improve the appearance yield. The device mainly comprises a machine table, a table plate is arranged on the machine table, a fixing frame is arranged on the machine table, a brush motor is arranged on the fixing frame, an output shaft of the brush motor is connected with a brush frame, a plurality of brush heads are arranged on the brush frame, the brush heads are located above the table plate, a dust cover is arranged in the area above the machine table, a nitrogen pipe is inserted into the dust cover, and a jet head is arranged at the end of the nitrogen pipe. The jet head is positioned above the center of the bedplate; a plurality of negative pressure exhaust holes are formed in a platen of the machine table, an exhaust cavity is formed below the platen, the negative pressure exhaust holes are communicated with the exhaust cavity, and the exhaust cavity is connected with an exhaust pipe. The graphite disc cleaning device is mainly used for cleaning graphite discs.

The application discloses a kind of measuring device and measuring method of suspending single droplet radius and refractive index, belong to aerosol microdroplet spectrum analysis field;Solve the weak signal of existing optical tweezers stimulated Raman method, the technical problem that the radius and refractive index of droplet cannot be measured to PM 2.5 Scale. The device includes a single droplet suspension sample cell, a microdroplet pumping system, an atmosphere control system, an optical trap system, an optical signal detection system, an optical imaging system and an LED beam shaping system;Among them, the LED beam shaping system is communicated with the optical trap system, and the optical trap system is respectively communicated with the single droplet suspension sample cell, the optical signal detection system and the optical imaging system;Single droplet suspension sample cell is respectively communicated with microdroplet pumping system and atmosphere control system. The present application uses LED to light the suspended single droplet, and accurately obtains the radius and refractive index data of the droplet according to the stimulated elastic scattering signal, to provide a key parameterization measurement scheme for revealing the generation mechanism of aerosol in the process of atmospheric fine particulate matter pollution prevention and control.

The invention provides semiconductor manufacturing equipment and an in-cavity component surface treatment method, and is applied to the technical field of semiconductor manufacturing equipment. Wherein in the surface treatment of the non-fluorinated cavity components (such as a heating disc, a spray head and other Al components) in the equipment cavity needing fluorine corrosion prevention, aluminum source gas and reaction gas are introduced into the equipment cavity, and after being activated into plasma, the plasma is introduced into the equipment cavity; the aluminum source gas and the reactive gas plasma active groups are subjected to in-situ chemical reaction on the surface of the component to grow the film, and finally, a compact layer can be grown on the surface of the component, so that the compact layer is used as a barrier layer for resisting fluorine corrosion; the aluminum fluoride layer is effectively prevented from being generated due to fluoridation reaction on the surface of a part when NF3, CF4, SF6 and the like are used in the technological process of equipment, and particulate pollution caused by the fact that the aluminum fluoride layer is prone to peeling off when the thickness reaches a certain degree is avoided.

A circulating fluidized bed boiler flue gas treatment device comprises a flue gas collecting box and a rotating plate, the interior of the flue gas collecting box is divided into a filtering cavity and an adjusting cavity through a partition plate, a fixing frame is fixedly connected into a fixing groove formed in the filtering cavity through an embedding plate, a flow dividing groove is formed in the upper end of the fixing frame, and liquid discharging grooves are symmetrically formed in the bottoms of the two sides of the flow dividing groove; the rotating plate is movably connected into the adjusting cavity, an inner cavity of the rotating plate communicates with an inner cavity of the partition plate through a penetrating opening, the side, away from the partition plate, of the rotating plate is fixedly connected with a main rotating rod, the main rotating rod is movably connected with a smoke receiving box through a bearing, and meanwhile storage grooves are symmetrically formed in the side face of the adjusting cavity; the positioning block is slidably connected into the storage groove through a spring and a fixing rod. Through cooperation of the fixing frame, the filter screen, the liquid discharging groove and the flow dividing groove, the filtering effect of the device on dust particles in smoke can be enhanced, and the probability that the dust particles pollute the environment is reduced.

The present application relates to the technical field of ecological environment regulation, and discloses a forest climate regulation and pollutant purification integrated system, which comprises a state sensing unit, a shunt execution unit, a treatment execution unit, a gas sending and discharging execution unit, a regeneration execution unit and a central control unit; the state sensing unit is used for collecting data; the shunt execution unit is used for distributing the air to be treated to at least two treatment paths; the treatment execution unit is used for carrying out pollutant purification and climate regulation treatment on the air entering different treatment paths; and the regeneration execution unit is used for carrying out condensation dehumidification and state recovery on the treatment execution unit when a preset condition is met. Through the construction of a control mechanism based on multi-load unified modeling, the particulate pollution state, the volatile organic compound pollution state and the thermal and humid environment state are included in the same control system, so that pollution treatment and climate regulation can be simultaneously executed in the same control framework.

The invention provides a particulate matter pollution cooperative region identification method and device based on a time-delay dynamic network, equipment and a storage medium. Relates to the field of complex system science. The method comprises the following steps: acquiring particulate matter concentration time series data of a plurality of cities in a target area, and performing preprocessing and normalization to obtain a standardized time series data set; the method comprises the following steps: acquiring a time-space lag effect and association strength of particulate matter transmission between urban nodes by adopting sliding window time-lag cross correlation analysis, determining a transmission direction and an edge weight between the urban nodes, and constructing a weight adjacency matrix to obtain a dynamic weighted directed network; calculating a transmission contribution value of each city node; and carrying out community division on the dynamic weighted directed network, and identifying urban node groups with similar pollution transmission characteristics to obtain a pollution collaborative area. The method can quantify the transmission contribution of the urban nodes and divide the pollution cooperation area, and provides data support for accurate prevention and control of regional particulate matter pollution.

The invention belongs to the technical field of environmental air quality forecasting, and relates to an atmospheric fine particulate matter pollution process forecasting evaluation method and system, and the method comprises the steps: 1) data acquisition and arrangement; 2) calculating a level accuracy rate, a pollution hit rate, a trend consistency rate and a peak precision; 3) calculating a comprehensive score of the forecasting effect based on the level accuracy, the pollution hit rate, the trend consistency rate and the peak precision; and 4) calculating comprehensive scores of forecasting effects for all PM2.5 pollution processes in the urban target time period, and grading the comprehensive scores of the forecasting effects so as to transversely compare the forecasting effects of different pollution processes. By constructing a comprehensive scoring method based on multi-angle evaluation indexes, quantitative evaluation of the overall forecasting effect of the PM2.5 pollution process can be realized, and the blank of a comprehensive evaluation method for the forecasting effect of the PM2.5 pollution process is filled.

The application relates to a method for detecting nano black carbon particles in animal biological samples, and relates to the field of atmospheric particulate pollution research. The method is applied to black carbon particle detection of human samples. After the animal biological sample is freeze-dried, concentrated nitric acid is used for digestion, the pH value is adjusted, diatomite is added, mixed and settled, high-speed filtration is carried out, nano black carbon particles are captured on a quartz fiber filter membrane pre-paved with diatomite, and the filter membrane is washed with an oxidant and an organic solvent to remove residual organic matter. The filter membrane is moved into a reaction kettle, concentrated nitric acid is used for oxidation under high temperature and high pressure, black carbon particles are oxidized into corresponding molecular markers benzene polycarboxylic acid, integrated separation, enrichment, purification and derivative treatment are carried out, and GC-MS / MS is used for quantitative analysis of the benzene polycarboxylic acid. The concentration of the benzene polycarboxylic acid is obtained after conversion, and the concentration of black carbon in the biological sample is obtained. The benzene polycarboxylic acid molecular marker method is successfully applied to the detection of ultra-trace nano black carbon particles in animal biological samples, and accurate quantitative analysis of black carbon particles in biological samples is realized.

The application belongs to the technical field of atmospheric monitoring, and particularly relates to an atmospheric environment particulate matter pollution monitoring device and a monitoring method. The existing device can only monitor fixed direction and fixed height gas. Fluff, fine sand and other sundries in the air adhere to the air collection device, which affects the later atmospheric monitoring. The present application provides the following scheme, which comprises a mounting column, the outer wall of the mounting column is fixedly provided with a mounting frame, the top of the mounting frame is fixedly provided with a monitoring box, the top inner wall and the bottom inner wall of the monitoring box are both fixedly provided with a radiation instrument, and the outer wall of the mounting column is further provided with an upper cover plate and a lower cover plate. In the application, the rotation of the rotating shaft can drive the collection ring to rotate and lift synchronously, so that the gas can be collected at different directions and different heights, the detection accuracy is improved, and the gas injection and exhaust can be alternately performed during the reciprocating movement of the moving plate, so that the gas monitoring is continuously performed.