872 results about "Atmospheric pollutants" patented technology

The invention relates generally to pyrimidines and triazines ultraviolet light absorbers containing a phenolic aromatic group(s) and a non-phenolic aromatic group(s) and the use thereof to protect against degradation by environmental forces, inclusive of ultraviolet light, actinic radiation, oxidation, moisture, atmospheric pollutants, and combinations thereof. The new class of pyrimidines and triazines includes two (one) non-phenolic aromatic groups with hydrocarbyl groups that are ortho to each other and one (two) resorcinol or substituted resorcinol group attached to a triazine or pyrimidine ring. The pyrimidines and triazines may be included in a polymeric structure. A method for stabilizing a material by incorporating the novel pyrimidines and triazines is also disclosed.

The invention relates to a method for recycling sulfur from acid gases containing hydrogen sulfide, comprising the following steps: (a) air supply; (b) acid gas pretreatment; (c) mixture; (d) primary direct catalytic oxidation; (e) primary sulfur condensation; (f) process gas reheating; (g) secondary direct catalytic oxidation; (h) secondary sulfur condensation; (i) sulfur re-separation; (j) degasification in a liquid sulfur tank; and (k) tail gas burning. When the volume concentration of H2S in the acid gases in the prior art is 1-15%, the recycle rate of sulfur can reach over 99% by the method of the invention, and the emission load of H2S in the acid gases processed by the method of the invention meets the emission requirement of Integrated Emission Standard of Air Pollutants (GB16297-1996).

The invention relates to a waste water treatment system and a waste water treatment method for a power plant. The system comprises a pre-treatment system, an evaporation and crystallization system, an ammonia nitrogen treatment system and a membrane condensation and treatment system, wherein the pre-treatment system is connected to waste water of the power plant; the ammonia nitrogen treatment system is connected between the pre-treatment system and the evaporation and crystallization system and connected to waste water treated by the pre-treatment system; and the membrane condensation and treatment system is arranged between the ammonia nitrogen treatment system and the evaporation and crystallization system. A small amount of ammonia nitrogen in system water is removed or the ammonia nitrogen content of the system water is lowered by using the ammonia nitrogen treatment system; the NH3 content of blow-off tail gas produced after blow-off is very low and fully meets the requirement of national atmospheric pollutant emission standard; and the ammonia nitrogen content of water is lowered by a blow-off method (or an oxidation method) so that running cost is lowered. Moreover, the concentration of waste water can be increased by membrane condensation and treatment technology and crystallization can be performed, so that the steam consumption of the evaporation and crystallization system and the running cost are reduced; and the NaCl content of crystal salt is increased so that the crystal salt reaches the quality standard of industrial salt and the aim of recycling waste materials is fulfilled.

A unit dose, gas-filled syringe is provided which is filled with gas and packaged in a gas barrier material prior to use to increase shelf-life, that is, to minimize gas leakage and dilution of the contents of the syringe. The syringe is filled with a selected gas and sealed inside a container made from a high gas barrier material. The container is also filled with the selected gas. The container material is selected to have a gas transmission rate sufficient to prevent the selected gas from diffusing out of the container into the atmosphere. The volume of gas in the container is greater that atmospheric pressure to prevent atmospheric contaminants from entering the container and syringe.

A gas turbine engine includes: an air flow control system installed in an air intake path for introducing air to a compressor. The air intake path is located outside and upstream with respect to the compressor. The engine also includes intake air flow control means for controlling an intake air flow by operating the air flow control system according to a load of the engine so as to maintain an air-to-fuel ratio in the combustor within a proper range suited to suppress a discharge of an atmospheric pollutant.

The invention discloses a method for constructing an atmospheric pollutant diffusion model. The method includes the following steps of establishing three-dimensional space rectangular coordinates, determining factors which influence atmospheric pollution diffusion, simplifying a fundamental form of a Gaussian model, and obtaining the atmospheric pollutant diffusion model. The method can be widely applied to survey regions with various dimensions, and is particularly suitable for medium and small dimensions. Besides, the method is high in computational efficiency, low in requirement to meteorological data, and capable of reflecting a diffusing process of atmospheric pollution to the greatest extent in a simple mode. Under the conditions that a rang is small, a weather field is simple, the underlying surface and topographic conditions are relatively not complex, and secondary pollutant is not considered or processed simply, a concentration field calculated through the method and a concentration field calculated through a complicated numerical method are comparatively fit, errors are mainly derived from input parameters of the model (such as precision degree of pollution source data), the model is simple, input data are less, and programming and developing are convenient.

The invention provides atmospheric pollution monitoring and a management method as well as a system based on high-density deployment of sensors. The method comprises the steps of acquiring status information in a deployment area, and deploying a plurality of sensors with high density in the deployment area; acquiring sensor data of the plurality of sensors, and performing joint correction on the sensor data; inferring atmospheric pollutant data of location points where the sensors are not deployed in space by utilizing a gauss inference model; performing forecast and analysis on atmospheric pollutant data of the location points with the deployed sensors and the location points where the sensors are not deployed by adopting a prediction model in time series; sending the atmospheric pollutant data to a monitoring center, and monitoring the atmospheric pollution state in the whole area in real time by monitoring personnel. According to the atmospheric pollution monitoring and management method as well as the system based on the high-density deployment of the sensors provided by the invention, purposes of real-time monitoring and evidence obtaining, quantized rating and fine management are achieved, perfect visual display is provided, and integrated management that pollution sources are monitored and discovered, evidences are obtained, and cooperation of enforcement is performed is realized.

The invention discloses an air quality remote monitoring and purifying system in a cloud technology. The system comprises an air quality detector, an intelligent terminal, a cloud computing server and an air purifier. The system is characterized in that the intelligent terminal is connected with the air quality detector, the cloud computing server and the air purifier in a wire communication mode and a wireless communication mode. The air quality detector comprises one or a plurality of PM2.5 detectors, a PM10 detector, a nitrogen dioxide detector, a sulfur dioxide detector, a carbon monoxide detector, an ozone detector, an atmospherium and a formaldehyde detector. The real data and historic data can be checked by people through the intelligent terminal, the detected data can be shared to people and can be provided from environment-related department as reference; the air purifier can be automatically opened by people in manual operation so as to reduce the concentration of air pollutants in the surrounding environment.

The invention relates to an estimation method and an estimation apparatus for the atmospheric pollutant concentration. The method comprises: dividing the road within a target area into a plurality of pollution sources, and determining the influence range of each pollution source; according to the influence range of each pollution source and the position information of each research point within the target area, determining the corresponding relationship between the pollution source and the research point; based on each research point, calculating the pollution risk value respectively according to the pollution intensity of the corresponding pollution source and the diffusion model; according to the pollution risk values of the plurality of the research points having the determined pollutant concentration values within the target area, establishing a regression model between the pollution risk value and the pollutant concentration value; and based on the concerned research points having the unknown pollutant concentration values within the target area, substituting the pollution risk value of the concerned research point into the regression model, and calculating the pollutant concentration value of the concerned research point. With the method and the apparatus of the present invention, the concentration of the atmospheric pollutant of the concerned research point at any spatial positions within the target area can be efficiently and accurately estimated.

The invention provides a three-dimensional iterative computing method for environment capacity of multiple atmospheric pollutants. The method comprises the steps of building a regional complex atmospheric pollution environment capacity three-dimensional iterative computing model based on a pollution source emission list and a meteorological model; establishing a pollution source three-dimensional classification method and an acceptor site optimization selection hierarchical classification method according to space distribution of pollution sources, industry types and pollutant indexes; establishing a dynamic iterative computing method for a space transmission matrix, an industry contribution matrix and a precursor contribution matrix by utilizing the environment capacity three-dimensional iterative model; and iteratively computing the environment capacity of the atmospheric pollutants such as SO2, NOx, particulate matters, NH3, VOCs and the like in regions and sub-industries by adopting a multi-objective nonlinear optimization technology according to the space, industry and precursor contribution matrixes. According to the method, the effects of regional transfer of PM2.5, industry coupling, precursor nonlinear collaboration and the like are comprehensively considered and the deficiencies of an existing environment capacity computing method are made up for.

The invention provides a new algorithm for an atmospheric environment capacity by using a region air quality model (RAQM). The new algorithm comprises the following computation steps: utilizing a meso-scale meteorological model to perform analog computation on an average value of year-round meteorological elements per hour in an estimation region to obtain uout and uin; utilizing the RAQM to perform analog computation on an average value of pollutant concentration per hour in an estimation year in the estimation region to obtain c; using a process analysis module to output transportation volumes Fout and Fin, dry deposition volume Ddry, wet deposition volume Dwet and chemical conversion volume T of pollutants per hour; performing the computation to obtain V and Asection; using cstandard to obtain a static volume of each atmospheric pollutant in the estimation region; and according to an expression of atmospheric environment capacity Q, performing the calculation to obtain a total environmental volume of atmospheric pollutants in the estimation region. With the adoption of the new algorithm provided by the invention, not only is the maximal capacity of atmospheres to contain the pollutants, regional transportation features of the atmospheric pollutants are reflected, but also key factors of influencing the pollutants in the estimation region are obtained, and assessment judgment basis such as more reasonable theories, more reliable data and more credible result can be provided for atmospheric environmental impact assessment.

The invention discloses an assessment method and device of gridding urban atmospheric pollutant emission, wherein the method includes performing grid division on a target area to obtain a plurality ofcontrol areas; determining key pollution sources; determining area pollutant emission levels of the control areas; obtaining distribution information of surrounding pollution sources; obtaining pollutant distribution diffusion information in different scenes according to the area pollutant discharge levels and surrounding pollution sources, and establishing a pollutant transfer mathematical model; determining maximum emission amount and allowed emission indexes, and determining environmental carrying capacity; and formulating emission reduction measures according to the environmental carryingcapacity and determining capacity allocation. The method can obtain the plurality of control areas through gridding of the target area, thereby determining the area pollutant emission levels of the control areas, and can obtain the environment bearing capacity according to the distribution information of the surrounding pollution sources, thereby formulating emission reduction measures and determining capacity allocation, accuracy and reliability of assessment are improved, and effective pollutant management and monitoring are realized.

The invention relates to an RBF-neural-network-based atmospheric pollutant concentration prediction method. The RBF-neural-network-based atmospheric pollutant concentration prediction method includesthe steps: dividing experimental data according to the actual situation of the predicted area, and pre-processing the atmospheric pollutant concentration data; using the MMOD improved K-means++ algorithm to solve the center of clustering, and calculating each kernel function width based on the variance; sampling the experimental data, wherein data subsets taking part in creation of RBF neural networks are IOB, and the remaining data that are not drawn are OOB data; evaluating learners to screen out the RBF neural network with the smallest generalization error, training an integrated RBFNN model; and by means of the weighted integrated RBFNN algorithm, based on weighted Euclidean distance, training single parameter through the center of clustering, the width and the weight to optimize RBFNN, and applying the single parameter to the integrated RBFNN to predict data. The RBF-neural-network-based atmospheric pollutant concentration prediction method is applied to atmospheric pollutant concentration prediction, and can greatly improve accuracy of atmospheric pollutant concentration prediction.

The invention relates to a device and method for managing regional air quality. The method includes: weather and atmosphere pollutant monitoring instruments are arranged in a certain region in an intensive and grid manner, online monitoring is performed on the work conditions of emission reduction facilities of various pollution sources emitting waste gas in the region and the emission reduction efficiency of the facilities at the same time, and devices capable of automatically sampling air when set conditions are satisfied are mounted; the online monitoring data is uploaded to a central server in real time through the Internet, a database program installed in the central server stores the data and inputs the data into a big data processing and analyzing program, and the big data processing and analyzing program predicts the pollutant concentration change of a preset space-point position, performs scenario analysis and optimizes a control strategy. By the method applicable to atmospheric environment control and air quality improving, the regional air quality can be monitored and controlled precisely, and environment protection is achieved.

The invention belongs to the residual heat resource recovery and the field of utilization technology in the metallurgical process, particularly to the high efficiency recovery and utilization method of the low temperature residual heat resource based on the cementing process of the energy saving and emission reduction, characterized by recovering the cooling exhaust of the high temperature but also recovering the cooling exhaust, the sintering exhaust of the low temperature. Under the premise for improving the sintering agglomeration technology condition, the robbed residual heat of each grade is in the step utilization. The invention makes full consideration of the organic combination of the residual heat recovery and utilization, overcomes the problems of grave irradiation of the residual heat resource and the single recovery utilization mode and the like, realizes the high efficiency recovery and utilization of the cooling exhaust and the sintering exhaust, which has the advantages of improved sintering technology, high efficiency recovery and utilization of the sintering residual heat resource and reduced atmospheric pollutant and the like.

The invention provides an ammonia spraying grating intelligent optimization and adjustment system and method for an SCR denitration device and belongs to the technical field of control over atmospheric pollutants discharged by coal-fired boilers. The ammonia spraying grating intelligent optimization and adjustment system for the SCR denitration device comprises a flue gas flow distribution detection system, a flue gas distribution concentrated sampling system I, a flue gas analyzer I, an ammonia spraying grating, a catalyst layer, a flue gas distribution concentrated sample system II, a flue gas analyzer II and an intelligent control system. The flue gas flow distribution detection system, the flue gas distribution concentrated sampling system I and the flue gas analyzer I are arranged in an SCR inlet flue, the ammonia spraying grating and the catalyst layer are arranged in an SCR reactor in sequence, and the flue gas distribution concentrated sample system II and the flue gas analyzer II are arranged in an SCR outlet flue. By means of the ammonia spraying grating intelligent optimization and adjustment system and method for the SCR denitration device, intelligent control over ammonia spraying optimization and adjustment, and wireless transmission for flue gas low detection and ammonia spraying flow detection are achieved, the ammonia spraying amount is controlled in the whole process, excessive ammonia spraying is effectively avoided, the testing efficiency and data effectiveness are improved, and the whole system is high in design integrity and portability.

The invention discloses an urban traffic carbon emission measurement and calculation system, and an urban traffic carbon emission measurement and calculation method. The urban traffic carbon emission measurement and calculation system comprises a driving factor generating module, a carbon emission measurement and calculation module and an emission reduction outcome evaluation module, wherein the driving factor generating module is used for extracting and generating driving factors according to various traffic emission reduction policies; the carbon emission measurement and calculation module is used for calculating energy consumption according to the driving factors, and calculating urban traffic carbon emission and atmospheric pollutant emission according to the energy consumption; and the emission reduction outcome evaluation module is used for evaluating emission reduction effects of the traffic emission reduction policies according to the urban traffic carbon emission and atmospheric pollutant emission. On the basis of fully analyzing the traffic emission reduction policies and combining with an LEAP model, the urban traffic carbon emission measurement and calculation system is established, scattered output data of the traditional model is integrated into a visual index, namely, the carbon emission, so that the carbon emission is liable to be used by decision makers directly, and the effective evaluation index and method are provided for the decision-making of policy support strength and time span.

The invention provides an industrial park atmospheric pollutant diffusion simulating and tracing method. The industrial park atmospheric pollutant diffusion simulating and tracing method specificallycomprises the following steps: (1) based on multi-point pollutant component analysis and concentration real-time monitoring data, analyzing atmospheric pollutant emission characteristics of an emission source, and calculating dynamic emission source intensity; (2) constructing an atmospheric pollutant diffusion model based on a Gaussian smoke plume diffusion theory and a smoke mass diffusion theory, calculating pollutant diffusion distribution characteristics of an emission source according to real-time meteorological data, and predicting the pollutant concentration of sensitive points; and (3) simulating and calculating the influence of the low-rise building within the factory boundary distance of the industrial park on airflow movement, determining a transmission path of emission sourcepollutants, and performing tracing analysis on sensitive point pollutants. The theories of Gaussian diffusion, smoke mass diffusion and computational fluid mechanics are integrated, the problem that the industrial park atmospheric pollutant emission traceability is difficult is solved, and the effective supervision of the industrial park ambient air quality is realized.

The invention discloses a device for eliminating haze and atmospheric pollutants. Appropriately preheated atmosphere with pollutants flows through a capillary tube array and is introduced into a liquid adsorbent, the pollutants in the atmosphere inside formed bubbles are adsorbed or dissolved by the surface of the liquid inside the bubble, and then atmosphere purification is achieved. The purification is applicable to atmospheric suspended grains of various diameters, and pm2.5 purification can be thoroughly achieved. To enhance the purification effect and the use convenience, the device is provided with function components such as a stirring rod with a bubble cutting steel wire and a spiral belt, and a waste liquid sucking chamber. The device can be separately used and can be also used with other devises in series. The device can be mounted on various carrying tools such as a vehicle, and due to the position change, the haze cleaning places can be changed at appropriate time, and the movement airflow of the carrying tool can be used as the power for eliminating the haze. The device can be used for purifying air at fixed points. When the device is used together with dust cleaning equipment, pm2.5 purification in polluted enterprises can be achieved. With special liquid adsorbent, the device can be used in special purification and professional equipment.

The invention provides photocatalytic powder capable of being applied to environment purifying and atmospheric pollutant governing. Each titanium dioxide particle is wrapped by a hydroxyl apatite layer, and holes with controllable size are formed in the hydroxyl apatite layer, so that target products such as formaldehyde and benzene are selectively degraded, and other larger molecules such as methyl orange are not damaged. The photocatalytic chemical powder can be extensively applied to various organic polymer setting products, especially organic fibers, plastic products or paint.

A sample sequestering system which allows access to a subspace in a chamber encompassed generally enclosed space, for use in entering and removing a sample when the subspace is opened to atmosphere. Sufficient purge gas is flowed from within the generally enclosed space into the subspace discourage atmospheric contaminates from entering into the subspace. Contained within the generally enclosed space is a spectrophotometer, ellipsometer or polarimeter or the like system which operates at wavelengths, (eg. UV), which are adversely affected, (eg. absorbed), by typical atmospheric contents.

The invention discloses a monitoring system and method for the pollutants produced by automobile exhaust emissions in the air pollutants. The standard emission database of all automobile types is established, OBD monitoring and diagnosis devices are mounted on all automobiles for transmitting automobile emission data, and a remote-control data monitoring center monitors automobile exhaust by analyzing the automobile data and notifies a driver the emission is excessive. Compared with the prior art, the method and system has the advantages that the automobile exhaust emission situation is analyzed through the engine data during driving, the automobile exhaust emission can be monitored in real time, emission of the automobiles with the OBD monitoring and diagnosis devices are monitored for 7*24 hours in an uninterrupted manner, emission data can be counted, automobiles with abnormal emission can be found and necessarily controlled in proper time, the automobile owner can be contacted timely to repair the automobiles according to the problems, and the atmosphere pollution caused by automobile abnormity can be prevented.

The invention discloses a method for compiling a port atmospheric pollutant discharge inventory based on activities. The method comprises a method for estimating discharge of port ships, a method for estimating discharge of harbour boats, a method for estimating discharge of port machines, a method for estimating discharge of heavy trucks, a method for estimating discharge of switch engines and a method for estimating the discharge amount of main transport locomotives. According to the method for compiling the port atmospheric pollutant discharge inventory based on activities provided by the invention, the port atmospheric pollutant discharge inventory is established based on port activities aiming at discharge sources, such as the port machines, the port ships, the harbour boats, the main transport locomotives and the switch engines; therefore, the source and pool relationship of a port and atmospheric pollutants in the inland navigation industry is known easily; the environmental situation of the shipping industry is correctly judged easily; and scientific basis is provided for setting reasonable policies and measures of a discharge reduction scheme in the shipping industry.

The invention discloses a sampling system for atmospheric pollutants discharged by a civil cooking range. The sampling system comprises a smoke capturing part, a diluted air part, an exhausting part and a measuring and sampling part. All smoke discharged by the cooking range is captured by a hood and is diluted by clean air, the smoke temperature and the pollutant concentration are reduced, the flow of the diluted gas is kept stable, the gas rate is in a measurable range, and the atmospheric pollutants are collected by using an atmospheric environmental sampling method. The sampling system disclosed by the invention has the advantages that the sampling system is suitable for discharging measurement of different cooking range structures, is not subjected to the influence of concentration of external background atmosphere, and is reliable in measuring result.

The invention provides a low-NOx grate-rotary kiln pellet production technology. The production technology includes utilizing blended flue gas W exhausted from a down-draft drying section (DDD) and aprimary preheating section (TPH) as cooling air to be delivered to an air inlet of (1) a primary circular cooling section (C1) and (2) an air inlet of a secondary circular cooling section (C2), spraying a reducer into a bottom air box of the circular cooling section (C2), making the reducer and the blended flue gas exhausted from the down-draft drying section (DDD) and the primary preheating section (TPH) to react with NOx so as to achieve SNCR (selective non-catalytic reduction) denitration. The low-NOx grate-rotary kiln pellet production technology has the advantages that the production pressure of enterprise atmospheric pollutant emission limits on pellet calcination equipment can be reduced to a certain degree, and the production technology is saving in investment, low in running costand remarkable in NOx emission reduction effect.