85 results about "Coal dust" patented technology

This invention relates to the field of pulverized coal conveying and dust removal technology, specifically to a pulverized coal dust removal method, comprising: S1: Constructing a dust removal system: setting up a dust cover on a conveyor belt, setting up a pressure-reducing chamber on the dust cover, installing wear-resistant baffles at the bottom of the dust cover, and installing a dust curtain inside the dust cover; installing a dust collector at the top of the dust cover; S2: Coal conveying and primary dust removal: starting the conveyor belt to transport coal, the coal falls onto the conveyor belt, and the generated dust-laden gas forms a local high-pressure zone under the obstruction of the dust curtain, causing a portion of the dust-laden gas to undergo primary filtration through the filter components on the pressure-reducing chamber; S3: Secondary dust removal: the remaining dust-laden gas in the dust cover is sucked into the dust collector, the dust-laden gas enters below the liquid surface of the dust collector, causing the pulverized coal particles to settle and form coal slurry, which is then transported outside the dust collector, and the purified gas is discharged through the outlet. This method achieves closed-loop control of the entire process from source dust suppression to end-of-pipe treatment through two-stage synergistic dust removal, improving the dust removal effect.

The application provides a coal quality improving and caking enhancing dust inhibitor and a preparation method thereof. Through synergistic effect of components, the coal quality improving and caking enhancing dust inhibitor can not only form a tough solidified film on the surface of coal, effectively inhibit dust flying and reduce coal loss, but also improve apparent calorific value of coal and improve coal quality through catalytic oxidation and pore filling mechanism. A composite wetting system can significantly reduce surface tension of a solution, and enhance the penetration and wrapping capacity of coal dust. A bonding system can form a solidified film with a three-dimensional network structure, and provide excellent wind erosion resistance and mechanical strength. Meanwhile, the quality improving and caking enhancing system can form a dense oxidation layer by catalyzing oxidation of light components on the surface of coal, and adsorb moisture, thereby reducing volatile loss and improving the calorific value of coal. In addition, the use of auxiliary components ensures the stability and environmental friendliness of the product under different environmental conditions. The preparation method is reasonable in process design, the product is stable in performance, and is suitable for industrial production.

This application provides a detachable sweeping and suction device and a railway track bed vacuuming vehicle, including at least two sets of sweeping and suction components. Each set of sweeping and suction components includes a sweeping and suction component frame, a cleaning component, and a suction component, which are mounted on the sweeping and suction component frame. A sweeping and suction component separation device is connected to the sweeping and suction components and is used to drive the two sets of sweeping and suction components to move relative to or away from each other to change the cleaning range. A swinging suction pipe is provided, one end of which is connected to the suction component of the sweeping and suction components, and the swinging suction pipe can swing along with the movement of the sweeping and suction components. The two sets of sweeping and suction components are arranged side by side in the longitudinal direction, and can be brought together to clean the middle part of the rail, or can be separated laterally to clean both sides of the rail. The lateral movement distance can be adjusted as needed, making it suitable for various types of rails, with a wide coverage area, improving the applicability of the coal dust cleaning device, and meeting the coal dust cleaning operations of various types of sleepers.

This invention discloses an online method and system for identifying coal powder fineness by fusing multi-source images and operating parameters, belonging to the fields of thermal power generation detection and artificial intelligence technology. The method includes: simultaneously acquiring backlight transmission and annular diffuse reflection images of the same coal powder particle group within a detection chamber using an air curtain isolation and mechanical cleaning self-cleaning mechanism; extracting morphological features and surface texture features of the particle group using a dual-branch deep neural network; generating a fused feature tensor by combining the above features with the coal mill operating parameters through a gated fusion network, and then outputting real-time fineness values ​​and early warnings through a regression prediction and early warning network; when update conditions are triggered, incremental fine-tuning of the fusion and regression prediction and early warning networks is performed on an edge computing device, and a containerized grayscale strategy is used to achieve hot service updates. This invention enables long-term, maintenance-free, high-precision, and adaptive online monitoring under high dust conditions.

This invention discloses an online measurement device and method for coal dust parameters based on multi-physics field fusion and adaptive decoupling. The device includes: a co-location fusion sensing probe, which integrates a charge sensing module and a microwave resonant sensing module, the microwave resonant sensing module operating at a frequency of 1.0-5.0 GHz; an adaptive decoupling calculation unit, equipped with an adaptive decoupling algorithm, configured to simultaneously receive electrostatic and dielectric characteristic signals, identify coal type characteristic parameters online through a pre-stored dielectric characteristic-coal type parameter mapping relationship, substitute these parameters into the charge signal physical model, and decouple and calculate the estimated coal dust concentration and flow rate values ​​to eliminate the influence of coal type through the online parameter identification method; and a data communication unit for outputting the estimated coal dust concentration and flow rate values. This invention, through online identification of coal type characteristics using microwave dielectric measurement and dynamic correction of the charge model, fundamentally eliminates measurement drift caused by changes in coal type, achieving long-term calibration-free, high-precision online measurement.

This invention discloses a method for determining blockages in a pulverized coal dust collector and its underlying pipeline, belonging to the field of metallurgical technology. The invention includes the following steps: S1, installing a temperature measuring device; an insertion-type temperature measuring device is installed below the ash hopper of the pulverized coal dust collector to measure the temperature T of the gas or pulverized coal inside the ash hopper. 灰斗 An insertion-type temperature measuring device is installed at the outlet flange connection of the medium-speed mill to measure the temperature T of the gas flow carrying pulverized coal. 出口 S2. The computer collects a set of values ​​every 10 seconds and enters them into the system; S3. Determine the lag time δt; S4. Determine whether material blockage has occurred; This invention enhances the system's adaptability to different working conditions by analyzing the temperature curve during normal operation and dynamically calibrating the lag time between the two; When the system detects that the outlet temperature fluctuation is not significant, it will actively prompt manual intervention and adjust the process parameters to ensure the validity of the monitoring data and avoid misjudgment or omission due to stable temperature; The implementation cost is low and it is easy to promote.

This utility model discloses a coal conveyor for thermal power plants, including a conveyor with an arched shell on its upper side, and a dust removal mechanism. The dust removal mechanism includes a dust collection shell, a top cover, a dust removal component, a filter plate, and a filter stirring auxiliary component. The dust collection shell is located at the upper right end of the arched shell, and a top cover is provided on the upper side of the dust collection shell. A dust removal component is provided between the dust collection shell, the top cover, the arched shell, and the conveyor. A filter plate is provided at the upper end of the interior of the dust collection shell, and a filter stirring auxiliary component is provided between the dust collection shell, the top cover, and the filter plate. This coal conveyor for thermal power plants uses negative pressure adsorption to separate coal dust treatment from coal conveying, and separately humidifies and recycles the collected coal dust, thereby avoiding equipment adhesion and blockage caused by directly spraying water to reduce coal dust during coal conveying.

The utility model relates to a coal water separation device for coal mine underground, including the collecting box that is equipped with gas suction port, the feed pipe that seals inserts into the collecting box, is equipped with the collecting port that is connected with the collecting pipe on the circumference of feed pipe, a plurality of water inlets are connected to the feed inlet of feed pipe, the underground water pipe is connected to the water inlet, still be equipped with the water jet pipe that is connected with a water inlet in the feed pipe, still set up a plurality of water mist sprays on the water jet pipe. The utility model discloses when using, the gas suction port carries out the air extraction to the collecting box, makes the collecting box to become the negative pressure, the gas and coal dust mixture in the collecting pipe, along the collecting port into the feed pipe, simultaneously, the water in the underground water pipe also enters the feed pipe after passing through the water inlet, and the coal dust contacts with the water mist in the feed pipe, thereby realizes the dust-settling effect, and the water also enters the water jet pipe through the water inlet and sprays from the water mist sprays, realizes the dust-settling effect from inside to outside, thereby realizes the dust-settling effect fully.

This application discloses a coal screening device, including a feed hopper, a washing box connected to the feed hopper, a washing mechanism for washing coal, and an air filtration mechanism for filtering air. The washing box contains a downwardly inclined screen plate, one side of which is connected to the inner wall of the washing box, and the other side extends downwards towards the outlet of the washing box. The washing mechanism includes a water pump, a nozzle, and a water supply pipe connected between the water pump and the nozzle. The nozzle is located inside the washing box and above the screen plate. The air filtration mechanism includes a filter box with an air cavity, a fan connected to the filter box for supplying air to the air cavity, a filter screen assembly located in the air cavity, and an air outlet pipe for discharging air from the air cavity. While the coal is treated with water mist for dust reduction inside the washing box, the air filtration mechanism also adsorbs coal dust from the environment, effectively reducing coal dust pollution during coal screening and improving the environmental friendliness of the screening process.

This utility model relates to the field of cabinet technology, specifically a control cabinet for a coal feeder. It includes a cabinet, a positive pressure dustproof device, a pressure relief device, and a cooling device. The cabinet comprises a cabinet body, an upper cabinet door, a lower cabinet door, and partitions. The cabinet body has a box-shaped structure with an opening facing forward. A horizontally positioned partition is located on the inner upper part of the cabinet body. An upper cabinet door is located on the front side of the cabinet above the partition, and a lower cabinet door is located on the front side of the cabinet below the partition. This utility model features a reasonable and compact structure, is easy to use, and maintains a higher air pressure difference inside the cabinet than the external environment through the positive pressure dustproof device, forming a one-way airflow barrier to effectively prevent the intrusion of pollutants such as coal dust and water mist. The pressure relief device automatically releases pressure when the air pressure inside the cabinet is too high. The cooling device dissipates heat and cools the cabinet, providing stable, efficient, and effective dustproof performance.

The utility model discloses a coal dust cement unloading device for production line relates to cement coal dust technical field, including storage bin, the bottom intercommunication of storage bin has the unloading pipe, and the inner wall of storage bin and unloading pipe all is provided with polytetrafluoroethylene anti -sticky coating, the outside of storage bin is provided with support frame, the outside fixed connection of storage bin has the connecting frame, the one side of connecting frame is provided with the drive assembly for the vibration unloading of driving storage bin.

The online coal powder concentration calibration system of the present invention includes: a coal mill feed rate detector, a primary air flow rate detector, a data acquisition and processing unit, and an electrostatic sensor. A coal inlet pipe and an air inlet pipe are installed at the inlet of the coal mill. The coal feeder delivers coal to the coal inlet pipe, and the primary air blower delivers air to the air inlet pipe. A coal outlet pipe is installed at the outlet of the coal mill. The coal mill feed rate detector is installed on the coal feeder, and the primary air flow rate detector is installed on the air inlet pipe. An electrostatic sensor is installed on the wall of each coal outlet pipe. The output terminals of each electrostatic sensor, the coal mill feed rate detector, and the primary air flow rate detector are connected to the input terminal of the data acquisition and processing unit. The data acquisition and processing unit calculates and outputs the coal powder concentration of each coal outlet pipe. The method of the present invention for online detection of coal powder concentration in the coal outlet pipe includes: acquiring the original signal, determining the total coal powder quantity, and the data acquisition and processing unit calculating the coal powder concentration of each coal outlet pipe.

The utility model provides a coal pulverizer separator of coal falling pipe belongs to coal conveying equipment technical field. Including the tubular main body of vertical setting, its upper end is the coal inlet, and the lower end is the coal outlet, the inner wall of tubular main body is provided with the continuous spiral guide slot, and the inside of tubular main body is equipped with the fairlead, the adjustable door of turning round is provided with in the outlet of coal outlet, and the buffer device is provided with below the outlet of coal outlet. The inside continuous spiral guide slot can guide the coal dust airflow to form the stable intense rotating flow field, and the fine separation of coal dust is realized by fully using centrifugal force, ensures that the coal dust concentration of export is uniform, reduces the collision and the agglomeration between coal dust, the fairlead can further guide the coal dust to flow along the predetermined direction, ensures that the coal dust can be evenly distributed, improves the separation efficiency, makes more coal dust can reach the ideal granularity, thereby the coal dust amount that needs to regrind is reduced, and the energy consumption is reduced.

This utility model discloses a three-stage dust removal device for rapid excavation in mining, relating to the field of roadway dust removal technology. It comprises a primary dust removal zone, a secondary dust removal zone, and a tertiary dust removal zone, with the dust removal sequence sequentially passing through these zones. The primary dust removal zone is equipped with a wet dust removal fan, the secondary dust removal zone is equipped with a full-section spray device and a dustproof net, and the tertiary dust removal zone is equipped with a dry dust removal fan. The wet dust removal fan actively draws in high-concentration dust from the working face for primary physical filtration and water mist capture. The dust then passes through a combination of full-section spray and dustproof net to achieve moist settling and wastewater diversion, intercepting escaped dust. Finally, the dry dust removal fan provides ultimate purification of residual micro-dust before discharging clean airflow. This effectively reduces dust in the working face and subsequent roadways, ensuring a safe working environment and significantly reducing the occupational hazards associated with coal dust.

The present invention relates to a coal-dust water flocculant configured to remove fine dust contained in coal-dust water generated during a process of spraying water on coal and the flocculant comprises chitosan and lactic acid. Therefore, the coal-dust water flocculant of the present invention has the advantages of having excellent flocculation efficiency for fine dust contained in the coal-dust water and a high fine dust flocculation rate and being completely harmless to the human body and the environment.

A low-dust-emission coal feeding device, belonging to the field of industrial dust removal technology, comprises a double-layer conveying cylinder, an air curtain bladder, an annular jet belt, and a cyclone separator. The inner layer of the double-layer conveying cylinder is a coal conveying chamber, and the outer layer is a pressurized air curtain chamber. The air curtain bladders in the pressurized air curtain chamber are spaced apart along the conveying direction. Multiple sets of annular jet belts contain multiple sets of jet units evenly distributed along the circumference. The jet units of adjacent annular jet belts are offset 15° circumferentially, which can spray high-speed airflow to form a spiral air curtain. The cyclone separator includes a venturi tube and a separation box. The venturi tube is located downstream of the double-layer conveying cylinder and its throat is connected to a water supply pipe. The air outlet of the separation box is connected to the air inlet of the air curtain bladder through a pipe with a dust filter, and the water outlet is connected to a sedimentation tank. This device can reduce coal dust emissions during the coal feeding process, reduce energy waste and environmental pollution.

The utility model provides a kind of coal pulverizer coal dust initial temperature promotion device, it is related to the technical field of coal-fired unit, including the flue between denitration device and air preheater and the flue gas inlet of coal pulverizer are communicated to the first pipeline leading out between them, high-temperature dust collector and temperature rising fan are sequentially provided on the first pipeline along the flow direction of flue gas;Flue between induced draft fan and chimney and the flue of first pipeline and second pipeline between high-temperature dust collector and temperature rising fan are converged;Valve group is arranged on the first pipeline and second pipeline;Valve group electric signal is connected with temperature control unit, for calculating the drying output demand temperature of coal pulverizer, solve the existing preprocessing easy to return moisture and technical problem of backflow abrasion equipment, reach the technical effect that internal flue gas of system is used to provide heat for coal pulverizer, while saving energy, reducing coal pulverizer explosiveness, improve low load condition boiler combustion state, improve boiler efficiency.

This utility model discloses a single-track liftable coal conveyor belt inspection system, relating to the field of coal conveyor belt inspection technology. It includes an inspection box and a traveling track. The inspection box is equipped with a traveling mechanism, and an electric telescopic rod is fixedly installed inside the inspection box. An inspection camera body is fixedly installed at the bottom of the electric telescopic rod. This single-track liftable coal conveyor belt inspection system, through the combined use of cleaning components and a cleaning structure, sprays cleaning fluid in a ring onto the inspection camera body, covering it with the cleaning fluid. Simultaneously, a drive motor drives a rotating rod to rotate, which in turn drives an external gear ring to rotate, causing a rubber scraper to rotate around the outside of the inspection camera body. The rubber scraper cleans away coal dust from the outside of the inspection camera body, ensuring clear images captured by the camera and improving inspection effectiveness.

The present application relates to the technical field of boiler combustion and discloses a multi-stage coal powder burner, which comprises an outer combustion cylinder, an inner combustion cylinder, an adjuster and a combustion stabilizer, the inner combustion cylinder is arranged inside the outer combustion cylinder, a channel is formed between the outer combustion cylinder and the inner combustion cylinder, the adjuster is connected with the outer combustion cylinder, the adjuster is used for guiding mixed gas flow, the mixed gas flow can be divided into a first-stage gas flow flowing through the inner combustion cylinder and a second-stage gas flow flowing through the channel, the adjuster is used for adjusting the flow of the first-stage gas flow and the second-stage gas flow, the combustion stabilizer is connected with the inner combustion cylinder, the combustion stabilizer is provided with a flame spout, the flame spout is arranged in the inner combustion cylinder and is used for spouting a flame to ignite the first-stage gas flow and the second-stage gas flow step by step. The multi-stage coal powder burner of the present application can adapt to different coal types to realize rapid ignition and stable and sufficient combustion.

This utility model discloses a ventilation grille device and engineering machinery, including a front hood, on which a ventilation grille is provided. The ventilation grille includes a frame and multiple grille plates disposed inside the frame. The multiple grille plates are spaced apart in the vertical direction, and the length of the grille plates extends in the left and right directions. The plate surface of the grille plates faces forward and is inclined downward. A fine mesh is provided on the side of the ventilation grille near the inside of the front hood. The fine mesh is arranged behind the multiple grille plates and is attached to the multiple grille plates. The structural design of this utility model is reasonable. (1) The grille plates face forward (in the direction of vehicle movement) and are inclined downward. The grille plates resist the impact of coal dust and block most of the coal dust from entering the radiator. (2) The fine mesh attached to the back of the grille plates further blocks the coal dust, maintaining the heat dissipation effect and stability of the radiator for a long time. The downward and forward inclined grille plates are more likely to guide the coal dust to fall.

This utility model discloses a coal bunker inlet unblocking device, relating to the technical field of unblocking devices. The utility model includes an inlet housing, with a cleaning mechanism on one side of the inlet housing. The cleaning mechanism includes a motor mounting frame laterally slidably fitted on one side of the inlet housing, a drive mechanism on one side of the inlet housing for driving the motor mounting frame to slide, and a transmission disc rotatably fitted on one side of the motor mounting frame. When the inlet housing is blocked, the drive mechanism activates to drive a material-pulling plate into the inlet housing. A servo motor is activated to drive the material-pulling plate to rotate intermittently, moving the coal dust inside the inlet housing to facilitate unblocking. When the material-pulling plate rotates to a vertical position and then intermittently stops, the drive mechanism drives the transmission disc and the material-pulling plate to reciprocate laterally. The elastically sliding material-pulling plate impacts the inside of the inlet housing, shaking off the coal dust from the inner wall of the inlet housing, thus improving the cleaning efficiency and effect of the coal dust removal.

This invention belongs to the field of coal mine rockburst and gas control, specifically involving a coal seam mining method based on directional drilling and hydraulic fracturing for depressurization and gas extraction. The method includes tunneling and hauling uphill, while simultaneously conducting depressurization and pre-gas extraction of the entire first mining face area through directional drilling from the surface. Then, negative pressure ventilation is implemented through the directional drilling on the surface. After the hauling and uphill tunneling is completed, the first mining face can be started immediately, with simultaneous return air tunneling. This significantly improves the timing and efficiency of starting the first mining face, allowing for faster recovery and cost reduction. Furthermore, during negative pressure ventilation at the surface using directional drilling, the gas and coal dust generated at the tunneling face flow with the airflow through the directional drilling to the surface, minimizing health impacts on workers at the tunneling face and greatly improving the safety of the working environment.

This utility model discloses an analysis device for coal dust adhering materials in underground ventilation fans of coal mines, comprising a horizontal block, a handle fixed to the lower end of the horizontal block, an L-shaped block fixed to the lower end of the horizontal block, a first threaded post fixed to the lower end of the horizontal block, a first internal threaded cylinder threaded onto the side wall of the first threaded post, a mixing box fixed to the side wall of the first internal threaded cylinder, an installation mechanism installed on the upper end of the mixing box, a first drive mechanism disposed inside the horizontal block, a rotating rod fixed to the output end of the first drive mechanism, a third internal threaded cylinder fixed to the end of the rotating rod away from the horizontal block, a second threaded post threaded onto the inner wall of the third internal threaded cylinder, and a first installation cylinder threaded onto the side wall of the second threaded post. This utility model has the advantages of efficient and accurate sampling, integrated sampling and mixing functions, rapid and uniform mixing, pollution prevention, and convenient operation.

The application discloses a kind of lead smelting bottom blowing furnace coal explosion-proof filtering device and method, it is related to coal filtering technical field, the first hinged link, second hinged link are hinged in the first cage and second cage between each other in the application, cooperate torsional spring and liftable cylinder and form variable height bag cage, by means of the cooperation of pressing mechanism and spring, the active shrinkage of bag cage when dust cleaning can be realized, so that in pulse jet dust cleaning stage, the deformation amplitude and shaking acceleration of anti-static filter bag can be effectively increased, the coal dust attached to the surface of anti-static filter bag is more thoroughly stripped, so that the dust cleaning efficiency of the device is high and uniform, the filter bag resistance is quickly restored to low resistance state, not only can reduce system operation energy consumption, prolong the service life of anti-static filter bag, but also be beneficial to reduce the probability of fire and explosion, improve the safety and stability of the device to a certain extent.

The utility model discloses a kind of coal gasification furnace heat recycling devices, belong to coal gasification furnace field, including furnace body, the upper surface of the furnace body is equipped with filter frame, the inside of the filter frame is equipped with filter plate, the outer surface of the filter frame is equipped with cleaning assembly, the outer surface of the furnace body is equipped with recovery assembly, the upper surface of the recovery assembly is equipped with pump, the input end of the pump is communicated with the outer surface of filter frame by suction pipe, the cleaning assembly includes top frame and air pump. By being equipped with filter frame and filter plate in front of recovery assembly, the gas needed to be pumped into water storage tank can be filtered, coal dust in the gas is filtered out, so that coal dust is prevented from flowing out with gas and adhering to the inner wall of pipeline, so the device effectively solves the problem that existing device is prone to cause coal dust to adhere to the inner wall of connecting pipe during use, causing the efficiency of heat exchange to be affected.

The application discloses a coal mine dust in-situ combustion utilization and working face refrigeration system and method, a coal dust collection and classification subsystem for obtaining combustible coal dust with a predetermined particle size, a coal dust combustion and heat energy conversion subsystem for burning the combustible coal dust and preparing high-temperature hot water, an energy regulation unit for temporarily storing the high-temperature hot water and outputting high-temperature hot water with a stable temperature after regulation, a hot water absorption type refrigeration and working face cooling subsystem for cooling a coal mine working face by using the high-temperature hot water as a driving heat source, and an automatic control module for analyzing real-time temperature and coal dust concentration data of the working face to adjust the combustion power of the coal dust combustion and heat energy conversion subsystem and the refrigeration power of the hot water absorption type refrigeration and working face cooling subsystem, so that adaptive coal dust combustion and working face refrigeration are realized. The method realizes waste utilization and effectively reduces energy consumption by in-situ resource utilization of coal mine dust and cooling of the working face.