230 results about "Dust emission" patented technology

The invention relates to a coal-fired unit electrostatic dust collection energy-saving optimization method, system and equipment and a storage medium, and the method comprises the steps: obtaining historically collected system operation data of a coal-fired unit electrostatic dust collection system, and constructing an outlet NOx concentration prediction model and an outlet dust concentration dynamic model according to the system operation data; power optimization control strategies of high-voltage power supplies of all levels of electric fields in the dust removal system are obtained, a model is built based on the outlet NOx concentration prediction model, the outlet dust concentration dynamic model and the optimization control strategies, and an electrostatic dust removal energy-saving optimization model is obtained; acquiring a preset environment-friendly standard concentration, and analyzing the environment-friendly standard concentration through the electrostatic dust collection energy-saving optimization model to obtain an optimal dust collection parameter; and adjusting the current or voltage of each level of electric field in the dust removal system according to the optimal dust removal parameters. Through the constructed energy-saving optimization model, the electrostatic dust collection control system can reduce the dust emission concentration and meet the pollutant emission standard, and meanwhile, the energy consumption of the electric dust collector can be greatly reduced.

The invention discloses an intelligent regulation and control method and system for a dust removal system of an iron and steel enterprise, and the method comprises the following steps: collecting real-time data according to a set frequency, including the operation parameters of each dust production point, the opening degree of a valve, and the operation parameters and exhaust condition parameters of a dust remover, dust conveying equipment and a fan, and dividing the data into operation variables and regulation variables; a hybrid neural network model is constructed, the hybrid neural network model comprises an LSTM-GPT-Neo backbone network, a DenseNet branch network and a meta learning feature fusion correction layer, and the LSTM-GPT-Neo backbone network fuses an LSTM architecture and a GPT-Neo architecture; inputting time sequence data to carry out model training and optimization; and inputting the data into the trained hybrid neural network model for calculation and analysis, and outputting the opening degree of the valve and the optimal operation parameters of the fan. Under the condition that the dust removal efficiency and stability are guaranteed, the electricity utilization cost of the steel plant can be remarkably reduced, and the problem of equipment loss caused by excessive dust emission or excessive air volume due to insufficient air volume is avoided.

The invention relates to the technical field of intelligent control systems, and discloses a multifunctional embedded intelligent cleaning control system which comprises a control execution layer, an internet-of-things transmission layer and a decision analysis layer. The control execution layer comprises an intelligent variable-frequency scraping device, a wind-water sweeping device and the like and executes sweeping and dust removal operation; the Internet of Things transmission layer realizes data interconnection and transmission through an edge computing node, a protocol conversion gateway and the like; and the decision analysis layer adopts a time sequence data analysis and convolutional neural network algorithm, dynamically optimizes the cleaning operation model, constructs a multi-dimensional linkage cleaning control strategy model, and realizes cleaning intensity adjustment, air and water parameter cooperative control and dust removal efficiency dynamic optimization. According to the system, through multi-technology fusion and collaborative optimization, the intelligent, precise and efficient level of sweeping operation is improved, the system is suitable for a conveying belt sweeping scene, the sweeping efficiency can be improved, equipment loss and dust emission can be reduced, and remarkable economic benefits and environmental protection benefits are achieved.

The invention relates to the technical field of building construction early warning, and particularly discloses a building construction temporary facility early warning management and control system based on the Internet, environment data of a construction site are collected in real time through a multi-dimensional environment sensing equipment array, and a surface dust accumulation distribution image of a windproof dust suppression net is synchronously obtained through an image collection device; performing multi-source environmental parameter fusion modeling according to the environmental data to obtain a construction site environmental parameter fusion model; performing dynamic efficiency evaluation on the dust suppression capability of the windproof dust suppression net to obtain a dust suppression efficiency evaluation coefficient of the windproof dust suppression net; and when the dust suppression efficiency evaluation coefficient is lower than a preset threshold value, an atomization spraying system is triggered automatically, and a corresponding spraying instruction is generated automatically, so that the atomization spraying system is controlled. Through real-time monitoring, dynamic evaluation and automatic control, the use efficiency of the windproof dust suppression net can be effectively improved, raised dust emission of a construction site is reduced, and environment-friendly compliance of construction activities is ensured.

The utility model relates to the technical field of bag-type dust collectors, and discloses a low-emission environment-friendly pulse-jet bag-type dust collector, which comprises a dust collector body, and an ash bucket is fixedly mounted at the bottom of the dust collector body. According to the low-emission environment-friendly pulse-jet cloth bag type dust collector, the filter bag in the dust collector body is in a state that no airflow passes through, then the pulse device is started to carry out pulse-jet dust removal by using compressed air, and the closing time of the exhaust pipe is enough to ensure that dust stripped from the filter bag settles to the dust hopper after the dust is jetted; the phenomenon that dust is attached to the surface of an adjacent filter bag along with airflow after being separated from the surface of the filter bag is avoided, dust cleaning of the filter bag is thorough, the dust is cleaned by arranging a driving device, a first rotating shaft and a cleaning plate, the dust can continuously reach a collecting box, the dust is prevented from being attached to the inner wall of a dust hopper, accumulation is avoided, and the service life of the filter bag is prolonged. Furthermore, the dust emission concentration can be obviously reduced, and the pollution to the environment is reduced.

The invention discloses a slag discharging treatment system of flame cutting equipment, and relates to the technical field of flame cutting equipment.The structure of a slag discharging device for the flame cutting equipment in the prior art is optimized and improved, and a hard plate body is obliquely arranged at the position, close to the oblique lower portion of cutting flame, of the top of a slag cutting container; a water pipe is used for spraying water towards the top face of the hard plate body from the inclined upper portion of the hard plate body, so that the sprayed water impacts the top face of the hard plate body, and then a water curtain is formed; the formed water curtain impacts and wraps cutting slag generated by cutting operation at the position close to cutting flame, the cutting slag is cooled rapidly and efficiently, and dust dissipation and filter layer damage are effectively reduced; the form and drop point of the formed water curtain are changed by adjusting the water spraying amount of the water pipe in unit time, concentrated accumulation of cutting slag is avoided, and the filtering layer and the container capacity are fully utilized; the drop point of the water curtain is changed by adjusting the water spraying amount, so that the water curtain repeatedly impacts the cutting slag on the filter layer, and efficient and sufficient separation of the cutting slag is assisted.

The invention relates to a method, a device and equipment for estimating the bulk cargo loading and unloading dust release amount of a port environment and a medium, and the method comprises the steps: dividing the port environment through employing a hexahedral grid with a non-uniform volume according to the distance of a bulk cargo loading and unloading interval and a bulk cargo particle value; determining wind erosion information of each hexahedral mesh under single disturbance according to historical wind power information through estimation of a dynamic wind erosion release factor, and determining static wind erosion dust capacity of each hexahedral mesh under single disturbance according to the bulk cargo particle value and the wind erosion information of the bulk cargo; determining a dust loading and unloading coefficient according to the dust release amount and the loading and unloading mode of the bulk cargo particle value during dynamic operation through an attention mechanism; according to the dust release amount, the bulk cargo dust loading and unloading coefficient and the static wind erosion dust amount of each hexahedral mesh under single disturbance, the dynamic dust emission amount is determined; and determining an estimation result of the bulk cargo loading and unloading dust release amount according to the static wind erosion dust amount, the dynamic dust emission amount and the duration of the bulk cargo in the single loading and unloading process.

The composite horizontal numerical control grinding machine comprises a grinding machine table, a polishing mechanism and a middle grinding mechanism, two sliding rails are fixedly installed at the top of the grinding machine table, and a first movable sliding frame is slidably installed on the outer sides of one ends of the two sliding rails; a clamping mechanism is fixedly installed at the top end of the first movable sliding frame. According to the scheme, when smoke dust absorption operation is needed, the powerful fan is started at the moment, air flow firstly passes through the air guide fan blades and rotates along with the hollow rotating shaft to achieve primary pushing, the air flow flows through the hollow rotating shaft and the middle positions of the middle barrel and the outer barrel, and smoke dust at the grinding position is pushed to a lathe five-jaw chuck; the air flow is intercepted and filtered through the step-by-step air filter plates which are distributed step by step, and the filtered smoke dust is stacked on the opposite side of the hollow clamping frame, so that the maintenance box can be conveniently and regularly opened for cleaning, the emission of the smoke dust can be conveniently reduced, and the efficiency of blowing the smoke dust by the air flow and the auxiliary cooling can be improved.

The present invention provides a pulse dust cleaning auxiliary device for a bag filter and a pulse bag filter, belonging to the technical field of environmental protection equipment. The pulse dust cleaning auxiliary device for the bag filter comprises a sleeve assembly, a first linkage mechanism and a driving assembly. The sleeve assembly is formed by splicing a plurality of sector-shaped sub-cylinders and is adapted to surround the outer side of the filter bag. A rotating shaft is provided at the top of each sector-shaped sub-cylinder, and the rotating shaft is rotationally matched with the mounting plate of the filter bag. The power output end of the first linkage mechanism is connected to the rotating shaft of the sector-shaped sub-cylinder in the sleeve assembly. The power output end of the driving assembly is connected to the power input end of the first linkage mechanism. The pulse bag filter comprises the above-mentioned auxiliary device. The pulse dust cleaning auxiliary device for the bag filter and the pulse bag filter provided by the present invention can effectively improve the dust cleaning effect at the bottom of the filter bag and effectively reduce secondary dust emission.

The invention belongs to the technical field of pulse dust removers, and particularly relates to an intelligent pulse dust remover and a control method. The control method comprises the following parts and steps: S1, monitoring the dust emission concentration in real time through a dust concentration detection sensor, and controlling a system to correspondingly and automatically increase and decrease the rotating speed of a frequency conversion fan and the opening degree of an automatic air regulating valve according to the increase and decrease of the dust concentration; s2, dust is discharged through a frequency conversion fan after being filtered; s3, the resistance of the filter bag is monitored in real time through a pressure difference sensor, when the pressure difference reaches an ash removal threshold value, a control system is started for pulse ash removal, and the injection pressure is dynamically adjusted by adjusting an electric pressure adjusting valve according to the set pressure difference change rate; and S4, the control system automatically controls opening and closing of the star-shaped discharging valve. The system has the advantages of dynamic ash removal control, dynamic working condition adjustment, low operation energy consumption and the like.

The utility model discloses an industrial grade filter cartridge dust remover which comprises a dust remover main body and a storage box, an air inlet pipe is fixedly arranged at the top end of the dust remover main body in an embedded mode, an exhaust pipe is fixedly arranged at the top end of the dust remover main body in an embedded mode, a funnel barrel is fixedly arranged at the lower end of the dust remover main body, and an extension plate is fixedly arranged on one side of the storage box. A control switch is fixedly embedded in the top end of the extension plate, and a storage battery is fixedly arranged at the top end of the extension plate. The control switch is treaded to start the pump body, then oil in the storage box is injected into the T-shaped pipe, then the oil is injected into the funnel barrel and flows into the dust collecting barrel, dust makes contact with oil hardening and forms blocks, then the dust collecting barrel is detached for treatment, and therefore pollution caused by reentrainment of dust is prevented.

The invention discloses a method, a device and a medium for predicting a flue dust concentration, which calculate a flue dust emission amount of each batch of coal fed into a furnace based on hourly coal consumption of a unit as a label value of a prediction model, generate a general rule between data of the coal fed into the furnace and a corresponding flue dust emission amount through training the prediction model, accurately identify a relationship between material and the flue dust emission amount, reduce workloads of manual accounting and verification, and provide a reference for CEMS flue dust monitoring data. At the same time, using an Adam algorithm to optimize a BPNN allows for automatic adjustment of a learning rate for each parameter, enabling fast and efficient training of the prediction model. The invention can solve problems of measurement errors and complex manual accounting and verification in the related art, thereby achieving precise measurement of the flue dust emissions from coal-fired power plants and reducing workloads of manual operations.

The invention relates to the field of atmospheric dust pollution prevention and environmental protection, and discloses a wharf dust emission monitoring grid clustering point distribution method based on uncertainty quantization, which comprises the following steps of: a, performing dust diffusion simulation by utilizing a pollutant diffusion model, and determining a dust comprehensive evaluation concentration; b, performing comprehensive evaluation and preliminary screening based on fuzzy evaluation to obtain candidate point distribution grids; c, the candidate point distribution grids are clustered, and the candidate point distribution grids are merged into categories; and step d, determining a final dust emission monitoring point according to the category. According to the method, the objective dust comprehensive evaluation concentration is calculated by introducing the GAUSSION diffusion model based on various meteorological scenes and occurrence probabilities, and subjective judgment depending on historical experience is replaced; and a fuzzy evaluation technology and an entropy weight method are utilized to carry out mathematical quantification on various uncertain factors, so that interference of human factors can be eliminated fundamentally, and a point distribution result is more reliable and representative.

The invention discloses an industrial dust emission detection method and system based on target recognition, and relates to the technical field of target recognition, and the method comprises the steps: deploying a camera at an industrial pipeline, collecting a pipeline image to obtain a video stream, and carrying out the first recognition of the video stream based on deep learning and a target recognition model of a neural network; cutting the picture which is identified for the first time and has ash emission or air leakage, extracting key feature points in an image area in which the ash emission or air leakage part is acquired, and calculating motion vectors of the feature points in continuous frames of images; analyzing the motion trend of dust emission or air leakage, and judging whether the dust emission or air leakage phenomenon exists or not; and if the phenomenon of dust emission or air leakage exists, evaluating the emergency degree based on the movement speed, the direction consistency and the area change of the diffusion region. According to the invention, deep learning and computer vision technologies are adopted to analyze the motion vector speed, direction consistency and diffusion area change, the severity of dust emission and gas leakage events is intelligently evaluated, and intelligentization and automation of industrial pipeline monitoring are realized.

The invention provides an intelligent long-distance stock bin multi-point linkage dust removal and closing system. The intelligent long-distance stock bin multi-point linkage dust removal and closing system comprises an air suction module, a closing module, a material level monitoring module and an automatic control module. The air suction module is provided with an air suction device on the bin opening side; the sealing module is provided with a cover plate with a switch module above or on the side surface of the stock bin opening; the material level monitoring module is provided with a radar material level meter to obtain material level data in real time. When the unloading trolley moves to a stock bin opening, the ejector rod abuts against the switch module to open the cover plate, and the automatic control module controls opening and closing of the air suction device according to material level data. The system controls opening and closing of the cover plate in real time, ensures tight sealing in the discharging process, prevents dust leakage, accurately manages the opening and closing time of the air suction device and the cover plate through intelligent control, reduces energy consumption and dust emission, and achieves the purposes of energy conservation and environmental protection.

The invention relates to the technical field of electric precipitation, in particular to overload monitoring equipment and a monitoring method for electric precipitation equipment, and the method comprises the following steps: acquiring target production data; determining a target dust discharge amount according to the target production data; and determining the target current magnitude according to the target dust discharge amount. The method has the advantages that the neural network is used for conducting deep learning on online collected production data, a corresponding relation model between the dust amount and the power plant production data is established, the smoke dust emission amount is predicted based on the model, the average secondary current amount of the electric field is adjusted in real time on the basis, and the purposes of reducing consumption and reducing power consumption are achieved. According to the invention, the control aims of improving the reliability of the IGBT and prolonging the service life of the IGBT are fulfilled, the spark discharge phenomenon can be reduced or avoided as much as possible, equipment such as the IGBT and a trigger circuit board can be better protected, and unnecessary electric energy consumption can be effectively reduced at the same time.

The utility model discloses a dust remover for feeding wire spheroidizing station relates to dust remover technical field, aiming at the low ash removal efficiency of the ash storage bucket of the dust remover for feeding wire spheroidizing station and the problem of incomplete cleaning of filter cartridge, present and propose the following technical scheme, it includes dust remover body, and the dust remover body is inside the setting and is inserted with the multiple groups filter cartridge that interpenetrates the slot, and the filter cartridge inside plug -in is connected with the multiple groups filter cartridge and is movably connected, and the filter cartridge side end is fixedly connected with the joint block, and the joint block side is provided with the rotary adjusting mechanism, and the dust remover body bottom both sides are fixedly connected with the conical ash outlet, and the conical ash outlet bottom is connected with the ash storage bucket, and the ash storage bucket is inside the setting and is provided with the ash unloading mechanism, and the dust remover body top is provided with the multiple groups high pressure air jet pipe, the utility model adds the vibrator, and optimizes the ash outlet, and introduces the rotary adjusting mechanism, and effectively improves the dust removal efficiency, reduces dust emission, and improves the working environment.

The utility model discloses a dry quenching coke loading system capable of reducing dust emission, which comprises a furnace cover opening and closing mechanism arranged on one side of a furnace mouth of a dry quenching furnace, a loading device for dry quenching, a tail coke hopper arranged on one side of the furnace mouth of the dry quenching furnace, and a movable coke tank suspended above the furnace mouth of the dry quenching furnace, two running rails are arranged on the two sides of a top port of the loading device side by side, a movable plate trailer is arranged on the two running rails, a movable motor is arranged on the movable plate trailer, walking wheels are arranged at the bottom of the movable plate trailer, and a cover plate used for shielding an upper port of the loading device is arranged on the front portion of the movable plate trailer. The cover plate is driven by the movable plate trailer to transversely move left and right along the running track, the upper layer of the cover plate is a metal plate, and the lower layer of the cover plate is provided with a high-temperature-resistant heat insulation material layer. Limiting switches are arranged at the two ends of the running track respectively. According to the utility model, the loading device is sealed after coke loading is finished, so that the dust removal effect is prevented from being influenced by the entrance of wild wind, and dust can be prevented from being dissipated.

The utility model relates to the technical field of planer type milling machines, in particular to a numerical control planer type milling machine capable of reducing milling dust emission, which comprises a planer type milling machine body, the planer type milling machine body comprises a spindle box body and a driving shaft body, and the outer side of the driving shaft body is sleeved with a connecting pipe body fixed on the lower plane of the spindle box body. The outer circle face of the connecting pipe body is connected with a rotary support, the lower plane of the rotary support is connected with an annular body, and a driving mechanism is installed on the spindle box body. The outer side of the driving shaft body is sleeved with a circular hollow shell, a plurality of dust collection holes are formed in the lower end face of the circular hollow shell at intervals, the upper end face of the circular hollow shell is connected with a dust collection pipe body, the upper end of the dust collection pipe body penetrates through the connecting pipe body and is connected with an external dust collector, and the lower plane of the annular body is connected with a telescopic connecting rod assembly. The lower end of the telescopic connecting rod assembly is connected with a strip-shaped brush. The dust removal device is reasonable in structure, and solves the problem that more rust and dust are easy to fly into air to cause pollution.

The utility model discloses a low-dust emission device for construction waste, including a box body, a feed port is provided on the box body, and the feed port is provided on the top left side of the box body; a plurality of feed rollers are provided in the box body, and the feed rollers are rotatably provided on the inner wall of the box body through a rotating shaft, one end of the rotating shaft extends out of the box body, and a transmission belt is connected between the adjacent rotating shafts that extend out, and the rotating shaft on the right side is fixedly connected to a motor; a cleaning brush is provided on the side of the feed roller; a water tank is provided below the feed roller, and the lower end of the feed roller is provided in the water tank, and a water inlet and a drain port are provided on the water tank; a discharge port is provided on the right side of the box body, and a discharge plate is provided between the discharge port and the right end feed roller. The utility model can clean the surface of the waste by arranging a cleaning brush on the surface of the conveying roller, and after brushing the dust and debris on the surface of the waste, it is rotated into the water tank for timely cleaning, and the dust adhering to the surface of the waste can be well removed by repeating this process.

The present invention discloses a dust collection device for drying polyester fibers, specifically relating to the technical field of dust collection, comprising a housing, an air inlet 1 being provided at the rear end and in the middle of the housing, a filter assembly 1 being provided inside the housing, a dust collection assembly being provided on the lower side of the filter assembly 1, a position limiting assembly being provided on the lower side of the filter assembly 1, a spray assembly being provided on the right side of the dust collection assembly, and a filter assembly 2 being provided on the upper side of the filter assembly 1. The present invention improves the overall dust collection efficiency and reduces dust emission through the use of the filter assembly 1 and the filter assembly 2. At the same time, when the filter assembly 1 separates the dust, the dust collection assembly, the position limiting assembly and the spray assembly simultaneously collect, squeeze and cool the dust, thereby suppressing dust from flying, facilitating subsequent collection and processing, and reducing the risk of dust explosion and the pollution of the environment by dust.

The application provides a soil erosion risk early warning method and device based on dust data, which comprises the following steps: performing grid processing and screening on a region to be analyzed to obtain an effective grid region; obtaining NDVI data and soil moisture data of the effective grid region; determining a slope length factor and a slope factor of each effective grid region; determining net dust data in the region to be analyzed by eliminating the influence of wind direction; determining a dust emission value of each effective grid region based on the NDVI data, the soil moisture data and the net dust data; calculating the NDVI data, the soil moisture data, the slope length factor, the slope factor and the dust emission value by using a neural network algorithm to determine a soil erosion intensity prediction value; combining the soil erosion intensity prediction value to determine a soil erosion value of each effective grid region; determining a soil erosion risk grid based on the current soil erosion value and historical soil erosion data, and performing risk early warning on the soil erosion risk grid.

The invention discloses a method for reducing flying dust in ceramic digital glue dry particle production, dust emission reduction and product performance improvement are realized through a multi-dimensional cooperative control technology, the core is to establish a particle size distribution-fluidity-flying dust suppression linkage control system, and a gradient dust removal system is synchronously developed. A high-frequency mechanical vibration device is arranged at the front section to remove large particles, a high-voltage electrostatic dust collection module is arranged at the middle section to capture suspended dust, a nanofiber membrane is adopted at the tail end for filtration, according to actual measurement, after transformation, the PM10 concentration of a production line is reduced to 3 mg / m < 3 > from 25 mg / m < 3 >, the equipment failure interval is prolonged to 1200 hours, the natural transition performance of dry particles is remarkably improved, the product superior rate is improved, and the production cost is reduced. In order to greatly reduce raised dust in the production process, the technology provides a solution for the generation of a large amount of dust in the production of ceramic digital dry granules.

The present invention relates to a dust emission measurement and control test bench for crop harvesting operations, comprising a conveyor belt, a stand, working parts, a drive assembly, a dust collection device, and a dust measurement system; a modular working part is provided above the stand, a drive assembly is provided above the working part, a conveyor belt is provided in front of the working part, a dust collection device is provided behind the working part, and a dust measurement system is provided in the dust collection device; the drive assembly comprises a plurality of independent drive motors; the dust collection device comprises a parallel cyclone separator, a spiral conveyor, a dust collecting barrel, and a pulse filter cartridge dust collector; the parallel cyclone separator has an air inlet, and the air inlet is used to be connected to the exhaust outlet of the agricultural machine; the dust measurement system comprises a No. 1 dust concentration meter and an impeller anemometer provided on the inner side of the air inlet, a No. 2 dust concentration meter and an ultrasonic anemometer provided on the inner side of the pipeline, and a No. 3 dust concentration meter provided at the outlet of the pulse filter cartridge dust collector.

The utility model relates to mining equipment dust removal technical field discloses a dust removal structure of mining screening machine, including the box, the box is arranged obliquely, one side of the box is equipped with first opening, the other side of the box is equipped with second opening, still include: support leg, four support legs are arranged respectively below the box, and can adjust the height of the box through height adjusting assembly set up on the support leg, dust removal structure, dust removal structure sets up at the top of the box, can carry out spraying dust removal operation directly to the first opening and the second opening of the box, the bottom of the box is equipped with the protective cover. The utility model has the advantages compared with prior art: adopt all -round covering type dust removal's mode, effectively prevented the dust emission of screening machine running process, and is equipped with spraying dust removal structure at the feeding and discharging of both sides, auxiliary further dust fall, improve the dust removal efficiency.

The present invention provides a method for constructing a sand or dust emission parameterization scheme based on surface albedo, which belongs to the field of sand or dust numerical simulation. The method comprises: based on wind tunnel experiments, performing stress measurement and light radiation measurement on a study area, and constructing a frictional wind speed calculation model; dividing the study area into grids, obtaining the surface albedo of each grid by acquiring satellite remote sensing data of each grid, and calculating using the frictional wind speed calculation model to obtain the frictional wind speed of each grid; constructing a sand or dust emission formula, and substituting the frictional wind speed of each grid into the sand or dust emission formula to calculate a sand or dust emission inventory for each grid, thereby completing the construction of the sand or dust emission parameterization scheme. The present invention solves the problems that simulation results and measured results of existing sand or dust emission parameterization schemes are uncertain, and are subject to real-time limitations and spatial singleness limitations.

The utility model belongs to the technical field of dust removal of pelletizers, and particularly relates to a dust removal device of a pelletizer, which is characterized in that a mounting block is arranged on a base, a pelletizing cylinder is arranged on the mounting block, a pelletizing mold is arranged at the top end of the pelletizing cylinder, a gas collecting hood is arranged at the top end of the pelletizing cylinder, a first fan is arranged on the base, and a second fan is arranged on the base. An exhaust pipe is arranged on the first fan; a set of comprehensive multi-stage dust removal system is constructed, a gas collection hood is arranged at the top end of a granulation cylinder and matched with a first fan and an air purifier, a large amount of waste gas and dust generated in the granulation process can be collected and purified in time, meanwhile, a dust collection hood is arranged on a treatment cylinder and matched with a third fan and a dust collection box, dust generated in the treatment cylinder is collected and filtered, and the dust removal efficiency is improved. Compared with a traditional single dust removal mode, the multi-stage dust removal mode has the advantages that dust of different sources and different particle sizes can be more efficiently captured, the dust removal effect is remarkably improved, and pollution of dust emission to the environment is greatly reduced.

This invention provides a method and apparatus for dust suppression using a heavy-duty hammer discharge system. The method includes the following steps: First, a target dust accumulation amount is preset based on the ash hopper volume. Second, the dust accumulation state is monitored, and the actual dust accumulation amount at the time of the last actual operation of the discharge valve is recorded. The actual accumulation amount is compared with the target accumulation amount to obtain the deviation accumulation amount. Third, the counterweight parameters of the heavy hammer are adjusted according to the deviation accumulation amount to change the operating threshold of the discharge valve for the next actual operation. When the actual dust accumulation amount reaches the operating threshold of the discharge valve, the discharge valve opens, and the dust is discharged into the discharge channel. After discharge, the discharge valve closes. Fourth, the dust emission level is determined based on the deviation accumulation amount, and dust is vacuumed at the ash outlet according to the dust emission level during the discharge process. Fifth, the discharge channel is self-cleaned after vacuuming to remove dust adhering to the inner wall of the discharge channel. The heavy-duty hammer discharge system provided by this invention can improve the accuracy of the discharge timing.

The invention belongs to the field of steelmaking, and relates to a lime powder screening system and a control method, the system comprises a screening device installed at a hopper of a belt conveyor transfer station, a replaceable screen plate is arranged, the standard size of screen holes is 10 mm, and lime powder is effectively screened out. The design volume of the ash storage bin is 120 m < 3 >, the ash storage bin is installed in a plant, a high-material-level sensor and an ash bin dust remover are arranged, and safe ash storage and dust prevention are guaranteed. And the closed ash discharging device reduces raised dust. And the interlocking control system ensures the safety and high efficiency of screening, ash discharging and high-material-level emergency treatment. The control method comprises screening preparation, operation starting and stopping, high material level treatment and exception treatment, stable operation of the system is guaranteed, the lime utilization rate is increased, and the steelmaking cost is reduced.

The application discloses a kind of road construction site dust monitoring method and system, it is related to road construction site dust monitoring field, comprising: through the fixed dust monitoring point of fusing road construction drawing and field survey data layout, and based on fixed dust monitoring point coverage density calculation real-time identification monitoring blind area, when identifying monitoring blind area, trigger mobile dust monitoring point supplement;Through the traffic parameters such as synchronous acquisition vehicle flow, vehicle speed and dust concentration data, and establish time series correlation model to analyze traffic active state and dust concentration change trend, and then calculate and summarize dust production component, obtain regional dust production intensity, eliminate coverage blind area by dynamic monitoring point layout, establish the quantitative correlation of traffic parameters and dust Calculation of dust production intensity, effectively improve the comprehensiveness and control timeliness of road construction dust monitoring, guarantee the safety of construction area and surrounding environment.