242 results about "Pulverized fuel ash" patented technology

The invention discloses a coal ash characteristic intelligent regulation and control method and system based on big data analysis, and relates to the technical field of coal ash characteristic regulation and control, and the method comprises the steps: obtaining coal ash parameter information, obtaining coal ash fusion characteristic temperature information based on a coal ash fusibility test according to the coal ash parameter information, and obtaining a coal ash viscosity-temperature characteristic curve based on the coal ash parameter information. According to the method, the fusibility of the coal ash is accurately analyzed by testing the fusibility of the coal ash cone, the fusibility of the coal ash in the actual production environment is accurately evaluated through the coal ash fusibility characteristic temperature, the accuracy of coal ash characteristic regulation and control is ensured through the coal ash characteristic regulation and control node, the coal ash characteristic regulation and control efficiency is improved, and the method is suitable for industrial production. The coal ash characteristic regulation and control mode is specifically limited through the coal ash regulation and control reagent proportion information, the situation that the coal ash characteristic regulation and control accuracy is affected by the superposition effect of different regulation and control reagents is avoided, and the coal ash characteristic regulation and control stability is improved.

The utility model relates to screening equipment for utilizing fly ash-doped solid waste, which comprises a shell and a feed hopper fixedly arranged at the top of the shell in a penetrating manner, a discharge port and a slag discharge port are respectively formed in the lower half parts of two opposite side walls of the shell, and a discharge inclined plate and a slag discharge inclined plate are respectively and fixedly connected to the inner bottom walls of the discharge port and the slag discharge port. The discharging inclined plate and the slag discharging inclined plate partially extend into the shell, a vertical plate is fixedly connected to the inner bottom wall of the shell, and a guide plate is hinged to the top of the vertical plate. The utility model relates to the technical field of coal ash. After screening is completed, the electric push rod works to drive the guide plate to rotate, so that the guide plate is attached to the slag discharging inclined plate, then the two sieve plates rotate, unqualified coal ash falls onto the guide plate through a gap between the two sieve plates and is discharged through the slag discharging inclined plate and the slag discharging opening, and therefore the unqualified coal ash can be conveniently taken out; and the fly ash can be fully screened.

The invention discloses a coal slime flotation dosage dynamic prediction method and system based on multiple working conditions, and relates to the technical field of mineral processing process control, and the method comprises the steps: based on coal slime particle data, employing a density clustering algorithm to carry out preliminary dynamic division on real-time working conditions, generating initial working condition labels, and through a time sequence correlation analysis and dynamic correction mechanism, carrying out dynamic prediction on the real-time working conditions; optimizing the initial working condition label to generate a multi-working condition label; a flotation cell simulation model is constructed, advanced simulation is conducted according to the real-time working condition operation parameters, the clean coal ash value and the recovery rate in a future time window are predicted, dynamic calibration is conducted, and a chemical adding amount adjusting instruction is generated; and executing the dosage adjusting instruction, evaluating the coal slime flotation efficiency through a multi-dimensional flotation dynamic evaluation method, and dynamically optimizing the dosage adjusting instruction according to an evaluation result. A flotation cell mechanism model is established, a predicted value is dynamically calibrated through parameter inversion and extended Kalman filtering, a dosing instruction is generated in combination with MPC, and advanced precise regulation and control of clean coal quality and recovery efficiency are achieved.

The invention discloses a coal slime flotation dosing state evaluation method and system based on multi-modal data, and belongs to the technical field of mineral processing, and the method comprises the steps: collecting a flotation froth image and tailing ash content data in a coal slime flotation process, taking the collected data as multi-modal input data, labeling the data, and preprocessing the data; randomly dividing the multi-modal data set with the label into a training set and a test set according to a proportion of 6: 4, establishing a flotation dosing state evaluation model based on a deep learning network, training the model, and inputting the data into the model to obtain a dosing state of to-be-classified data; according to the coal slime flotation dosing state evaluation method and system based on the multi-modal data, comprehensive analysis is conducted by fusing the multi-modal data, accurate evaluation and optimization of the dosing state are achieved, accurate reference bases are provided for the coal slime flotation production process, and the production efficiency and the resource utilization rate are improved.

The utility model discloses an automatic bulk system for ash materials, which comprises a tank opening identifying and positioning piece, a controller and a bulk machine, the bulk machine is provided with a bulk head, the tank opening identifying and positioning piece and the bulk head are both electrically connected with the controller, a tank car parking station for parking and feeding of a tank car is arranged below the bulk head, and the tank car parking station is electrically connected with the controller. The tank opening identifying and positioning part is used for identifying a tank opening of the tank car and positioning along with the tank opening, and the controller is used for controlling the bulk head to move to be aligned with the tank opening according to positioning data of the tank opening identifying and positioning part, so that when the tank car is parked at the tank car parking station, the bulk head can move to the tank opening to be aligned with the tank opening. The tank opening of the tank car can be identified by the tank opening identifying and positioning piece, the tank opening is positioned, then three-dimensional coordinate information of the tank opening is transmitted to the controller, the bulk head is controlled by the controller to move to be aligned with the tank opening, and coal ash can be added into the tank car through the bulk head.

The invention belongs to the technical field of coal, and particularly discloses an alkaline agent for chemical deep deliming of ultra-pure coal and a preparation method and application of the alkaline agent, and the alkaline agent is prepared from a quaternary ammonium alkali solution, a strong alkali solution, an NH3.H2O solution and a sodium fluoride solution according to the volume ratio of (2-3): (1-2): (1-2): (2-3). Compared with the prior art, the compound agent has high alkalinity and complexing capacity, and after deep deliming is conducted through the compound agent, clean coal with the ash content being 2% + / -0.2% can be prepared into ultra-pure coal with the ash content being lower than 0.2%; the preparation method of the alkaline compound agent is simple and easy to operate, the obtained product is high in quality, the coal ash content of the prepared ultra-pure coal is smaller than 0.2%, deep deashing of the coal is achieved, and further comprehensive utilization of the coal is facilitated.

The invention provides a circulating fluidized bed boiler load self-adaptive control system and method, and belongs to the technical field of circulating fluidized bed boiler load self-adaptive control. In order to realize in-boiler temperature regulation based on dynamic conveying of settled ash in a boiler and realize efficient active matching of heat transfer capability in a quick response load process of the boiler, the technical scheme is that the top of a hearth of the circulating fluidized bed boiler is communicated with the top of a cyclone separator through a coal ash recovery pipeline, and the top of the cyclone separator is connected into a tail flue; an economizer is arranged in the middle of the tail flue, and a flue outlet is formed in the bottom of the tail flue; the bottom of the cyclone separator is connected with a circulating ash returning device through an outlet pipeline, a settled ash conveying hole is formed in the upper part or the side part of the circulating ash returning device, and a conveying pipeline is welded on the outer side of the settled ash conveying hole and is connected with the bottom of a hearth of the circulating fluidized bed boiler; the method is used for self-adaptive control of the load of the circulating fluidized bed boiler.

The utility model relates to the technical field of coal feeders, in particular to a coal feeder cleaning device which comprises mounting frames, rotating rollers are arranged between the mounting frames, a conveying belt is arranged on the rotating rollers, firstly, the conveying belt is driven by a driving motor to rotate, then coal briquettes are driven to be conveyed, and in the conveying process, the coal briquettes are conveyed through the conveying belt. The scraping plate is located at the bottom of the conveying belt, residual coal slag on the surface of the conveying belt can be scraped down through the scraping plate and falls into the collecting box, meanwhile, the driving motor can drive the driven wheel through transmission of the driving wheel and the belt, the driven wheel drives the brush rod to rotate, and coal ash on the surface of the conveying belt is swept down through the brush rod. According to the coal feeder, the conveying belt is arranged in the collecting box and falls into the collecting box, follow-up treatment is facilitated, manual sweeping is not needed, the tightness of the conveying belt can be adjusted through up-down adjustment of the adjusting roller, only the double-shaft motor needs to be started during adjustment, the adjusting process is simpler and faster, and the use efficiency of the coal feeder cannot be affected.

The present invention relates to the technical field of coal ash component determination, and in particular to a method and system for coal ash component determination. The method comprises: performing X-ray diffraction on a coal ash sample to obtain an XRD pattern, detecting the XRD pattern to obtain multiple peak-finding windows; calculating the significance of significant peaks within the peak-finding windows, and using the peak-finding windows with significance levels within the significant interval as characteristic regions; heating the coal ash sample to a first temperature interval to obtain XRD patterns at different temperatures, and determining whether significant peaks within the characteristic region at the same position are overlapping peaks based on the obtained multiple XRD patterns; heating the coal ash sample from the first temperature interval to a second temperature interval to obtain XRD patterns at different temperatures, updating the positions of the peak-finding windows, and further determining the positions of overlapping peaks for coal ash component detection. The present invention takes into account the influence of overlapping peaks when analyzing coal ash components, thereby improving the accuracy of coal ash component analysis results.

The utility model discloses a pneumatic coal dressing auxiliary dust removal device which comprises pneumatic coal dressing equipment, and auxiliary dust removal devices are installed at the left end and the right end of the rear side of the pneumatic coal dressing equipment. According to the coal dust removal device, dust can be effectively removed from coal ash in the wind power coal dressing process by installing the auxiliary dust removal device, the good operation environment and the health of operators are ensured, water in the water storage ring can be atomized and sprayed out by arranging the atomization nozzle, then dust removal treatment can be carried out on the passing coal ash, and the dust removal efficiency is improved. Dust particles in coal ash can be rapidly adsorbed, water drops carrying the dust particles gradually settle to an annular plate and enter a recycling ring through a first through hole and a second through hole, a filter screen and a filter membrane arranged in the recycling ring can filter sewage, the sewage returns to a water storage ring through a water conveying pipe and a water pump to be recycled, and water resources are saved; and the bottom plate, the filter screen and the filter membrane are mounted through bolts and are convenient to disassemble and replace.

The present application relates to a kind of bauxite clinker kiln method and system for disposing aluminum ash, belong to metallurgical environmental protection technical field, the method includes the following steps: pretreatment aluminum ash, obtain fine powder aluminum ash;Fine powder aluminum ash is added to bauxite slurry, so that fine powder aluminum ash and the dry raw material and calcined coal ash in bauxite slurry are mixed, and mixed sintering is carried out, and then cooling is carried out, to obtain clinker;The present application carries out resource utilization to aluminum ash, replaces part of aluminum ore, and is used in the production of aluminum-based new material product, while reducing the production cost of aluminum-based new material product, realizes the harmless treatment of aluminum ash.

The utility model discloses a coal powder cleaning device for coal belt cleaning relates to cleaning device technical field. A coal powder cleaning device for coal belt cleaning, including belt conveying table and fixed base, belt conveying table fixed connection is at the top of fixed base, the ash cleaning structure is located on the fixed base, and the ash cleaning structure is including cleaning box, two support plates, two electric telescopic link, cleaning roller brush, driving motor and cleaning scraper, and the mechanical friction of cleaning roller brush removes the ash that sticks to the belt surface, and the cleaning scraper is scraped to remove the ash that remains the roller brush, effectively avoids secondary pollution, compared with single ash scraping plate cleaning, can handle big granular ash and adhered dust simultaneously, simultaneously, the negative pressure dust collection channel that exhaust fan, dust collection square pipe and dust collection mouth constitute can capture suspended fine dust in time, solve the problem that only rely on ash scraping plate cleaning leads to small granular dust to drift in traditional, realize the all -round cleaning to the ash on the belt surface.

The invention discloses a circulating blast furnace top gas high-temperature reforming system and method, and relates to the technical field of circulating blast furnaces. The circulating blast furnace top gas high-temperature reforming system comprises a circulating blast furnace, a gasification furnace device, a reformed gas treatment module and a waste heat recovery module, the gasification furnace device is connected with the circulating blast furnace, and the reformed gas treatment module is connected with the gasification furnace device and the circulating blast furnace. The reformer device is configured to receive the reformed gas discharged by the gasifier device, treat the reformed gas and then input the treated reformed gas into the circulating blast furnace; and the waste heat recovery module is configured to receive coal ash discharged by the gasification furnace device and preheat lump coal entering the gasification furnace device by utilizing waste heat of the coal ash. Based on the technical scheme disclosed by the invention, the heat utilization rate in the coal gasification process is remarkably improved, the energy consumption in the coal gas reforming process is reduced, and resource utilization and low-carbon clean development of metallurgical coal gas can be realized.

The utility model discloses a dust suppression device for a coal conveyor, which effectively realizes a better dust suppression effect and comprises a conveyor belt driven by the coal conveyor and used for conveying coal, a collecting box for collecting pulverized coal is arranged on the lower side of the conveyor belt, two rollers are abutted against the lower side of the conveyor belt, and the rollers are arranged on the lower side of the conveyor belt. The lower side of each roller is provided with a scraping plate used for scraping coal powder on the outer side of the roller, a movable adjusting plate is arranged in the collecting box, the bottom of each scraping plate is rotationally connected with the adjusting plate, and a spraying mechanism used for dust suppression is arranged in the collecting box. The device is simple and convenient to operate, the purpose of conveniently cleaning the conveying belt is effectively achieved, a worker can conveniently install the device and conveniently operate the device, the function of adjusting the pressing force is added, and collected coal ash can be conveniently removed.

A method for accurately and efficiently desodium of high-sodium coal, comprising the following steps: detecting the moisture M of the high-sodium raw coal to be treated t , calculating the total sodium content M of the wet basis coal sample Na , converting the total sodium content M of the dry basis coal sample Na , determining the Na2O content in the ash of the high-sodium raw coal to be treated; selecting the key factors affecting the desodium rate; establishing the relationship model between the key factors and the actual desodium rate; according to the Na2O content in the ash and the requirements of the standard, the desodium rate of the high-sodium raw coal to be treated is converted, and the Re target value is obtained; the Re target value is brought into the relationship model, and the selection and value of the key factors of the high-sodium raw coal to be treated during desodium treatment are obtained respectively, and finally the actual leaching desodium of the high-sodium raw coal to be treated is carried out to obtain low-sodium coal meeting the requirements. The method can accurately desodium, reduce cost, energy consumption and corrosion and pollution generated in the production process, and has important significance for guiding large-scale application of high-sodium coal desodium.

The embodiment of the invention provides a thermotechnical automatic production feeding device. The thermotechnical automatic production feeding device comprises an elevator and a feeding hopper fixedly connected to the surface of a conveying belt of the elevator. The covering part comprises a plurality of covering plates which are connected to the two sides of the elevator in a sliding mode and can synchronously move along with the feeding hopper, and the covering plates are used for covering the top of the feeding hopper in the lifting process of the feeding hopper. According to the feeding hopper, the covering component is arranged, and the covering plate of the covering component is located on the upper side of the feeding hopper in the lifting process of the feeding hopper and synchronously moves along with the feeding hopper, so that the effect of covering a coal mine in the feeding hopper is achieved, meanwhile, falling of coal briquettes and outward scattering of coal ash are prevented, and the working environment is optimized.

The utility model discloses a device for cleaning coal ash cakes on the inner wall of a boiler, and relates to the technical field of boiler cleaning. The device comprises a base, a collecting mechanism is arranged at the top of the base, a cleaning mechanism is arranged at the top of the collecting mechanism, the cleaning mechanism comprises a boiler tank body, a top plate is connected to the top of the boiler tank body in a height mode, a threaded block is fixedly connected to the top of the top plate, and a top plate is fixedly connected to the top of the top plate. A first motor is started to drive a threaded rod to rotate, at the moment, the threaded rod ascends or descends through a threaded block, a first fixing plate and a second sliding block are pushed to slide in a sliding rail, meanwhile, the first motor is driven to slide, and when the threaded rod moves, a rotating block located at the bottom of the threaded rod is driven to move, and meanwhile an auxiliary rod located on the outer surface of the threaded rod moves at the same time; when the auxiliary rod moves, the first sliding block can be driven to slide in the sliding groove, and meanwhile the ash removing scraper located on the outer wall of the auxiliary rod can slide on the inner wall of the boiler tank body so that coal ash can be agglomerated.

The present application belongs to the field of coal mine drilling, and particularly relates to a reamer for directional long drilling of coal seams; the reamer comprises a reamer barrel, a strip-shaped groove is uniformly formed on the inner wall of the reamer barrel along the circumferential direction, a cutter seat is slidably arranged in the strip-shaped groove, and a cutter wing is mounted on the cutter seat; a top plate penetrating through the cutter seat is further hingedly arranged on the cutter seat, a driving part for driving all the cutter seats to synchronously slide up and down in the strip-shaped groove is further arranged in the reamer barrel, and the cutter wing is used for adjusting the position of the cutter wing protruding from the outer wall of the reamer barrel and further adjusting the cutting diameter during the up-and-down sliding of the cutter seat in the strip-shaped groove; the driving part further cooperates with the top plate to drive the top plate to swing and remove the coal ash in the gap of the cutter wing; the present application reduces the abrasion from layered cutting, cooperates with self-cleaning and heat dissipation to maintain the cutting efficiency, dynamically adjusts the hole diameter and real-time performs the hole wall trimming during the reaming process, and forms a functional closed loop from the local to the whole to jointly solve the problems of tool life, chip removal and hole forming accuracy in the reaming of hard coal seams.

This invention discloses an artificial aggregate prepared using desulfurization solid waste, its preparation method, and its application, belonging to the field of solid waste resource utilization technology. The preparation method includes the following steps: ball milling desulfurization slag to obtain desulfurization slag powder; low-temperature pyrolysis treatment of waste incineration fly ash to obtain pretreated waste incineration fly ash; mixing desulfurization ash, desulfurization slag powder, and pretreated waste incineration fly ash to obtain a raw material mixture; adding water to the raw material mixture and pelletizing to obtain aggregate particles; subjecting the aggregate particles to air curing and mineralization curing sequentially to obtain the final product. This invention also discloses the artificial aggregate prepared by the above method and its application. The artificial aggregate prepared using desulfurization solid waste of this invention has high compressive strength and stable ion storage, which can solve the problems of low strength and high dependence on admixtures in existing coal ash-based aggregates, and has broad application prospects.

The present invention provides a coal ash detection device based on gamma rays, which includes a coal seam thickness regulation device, a controller, a laser rangefinder connected to the controller, a gamma ray source, a detector, an amplifier, a multi-channel analyzer, and an electric control machine system, belonging to the field of coal industry index detection. When the clean coal is transported to the belt conveyor, the coal seam thickness regulation device is responsible for adjusting the thickness of the coal seam to reduce the influence of high-density substances such as steel wires in the belt of the belt conveyor on the measurement results. The laser rangefinder sends the adjusted coal seam thickness signal to the controller, and the other end of the controller is connected to the starting device of the belt conveyor. When the coal seam thickness is low, the rotation speed of the belt conveyor is reduced. The detector includes a gamma ray source, a detector, a multi-channel analyzer, and an electric control machine system to achieve continuous measurement of ash content. The temperature sensor in the radiation source box is used to regulate the temperature of the radiation source box, reduce the influence of temperature on the measurement results, and improve the accuracy of the measurement results.

The utility model discloses a convenient exhaust valve coal ash cleaning device which comprises an exhaust pipeline, an exhaust valve and a cleaning branch pipe, the exhaust pipeline is provided with the exhaust valve, one side of the exhaust valve is communicated with the cleaning branch pipe, and the end of the cleaning branch pipe is provided with a first flange. A first sealing groove is formed in the end of the cleaning branch pipe, a first sealing ring is arranged in the first sealing groove, a second sealing groove is formed in the end face of the first flange, a second sealing ring is arranged in the second sealing groove, the first flange is fixedly connected with a blind plate flange, the blind plate flange and the first flange are fixedly installed, and sealing installation of the blind plate flange and the cleaning branch pipe is achieved. When ash needs to be cleaned, the blind flange is opened, and air or water is used for cleaning, so that the cost is reduced, the efficiency is improved, and the desired effect is achieved through an easy-to-operate method.

The invention provides anti-burst and anti-impact sacrificial concrete and a preparation method thereof. The sacrificial concrete is prepared from the following components in parts by weight: 600 to 700 parts of cement, 250 to 350 parts of superfine fly ash, 100 to 150 parts of silica fume, 900 to 1100 parts of quartz sand, 70 to 120 parts of barium ferrite, 140 to 170 parts of steel fiber, 4 to 20 parts of sisal fiber, 193 to 213 parts of water and 15 to 20 parts of water reducing agent. The preparation method comprises the following steps: sequentially mixing and stirring the raw materials, pouring, forming and curing. The sacrificial concrete disclosed by the invention has good sacrificial property, and the water content of raw materials is lower than 5%, so that the hydrogen yield in the interaction process of a reactor core melt and a sacrificial material is reduced; and the sisal hemp is heated to form gaps and channels, so that the high-temperature bursting resistance is improved.

The present disclosure provides a method for extracting rare earth elements from industrial waste and other materials. The method includes pre-treating a starting material including but not limited to materials containing coal, coal ash, and mined aggregates, combining the pre-treated starting material with a first aqueous solution comprising one or more ionic salts in a first stage reactor to form a first slurry containing double-salt crystals, separating the first slurry in a first stage separator to obtain a double salt solution and separated impurities, combining the double salt solution with a second aqueous solution in a second stage reactor to form a second slurry, and separating the second slurry in a second stage separator to obtain a purified product and a remaining aqueous solution. The method enables efficient extraction of rare earth elements from industrial waste materials while producing a purified product.

The application discloses a fly ash sampling device of a coal ash conveying system of a thermal power plant, relates to the technical field of coal ash sampling and detection of power plants, and aims to solve the problems of dust pollution and direct spraying of high-temperature ash samples. Coal ash enters and impacts the filter through the connecting part. The pressure of the coal ash main conveying pipe is greater than the pressure inside the fixed ring. The filter collects coal ash until the filter is blocked. At this time, the air pressure is greater than the elastic force of the reset assembly, thereby driving the filter to move downward, so that the inner container filter screen is exposed. At this time, the gas preferentially passes through the inner container filter screen and is discharged from the exhaust cavity, avoiding the problem of fly ash. The air impact ring groove heat dissipation barrel is buffered and enters from the inlet, passes through the heat dissipation channel, is buffered and heat-dissipated, and is discharged from the outlet. Then, the heat is dissipated through the heat dissipation disc and is discharged from the support plate to be heat-dissipated and buffered by the ground. The gas is not only subjected to cooling treatment, but also can be buffered. Finally, the gas discharge pressure and temperature are reduced, and the safety is high.

The invention relates to a high-temperature coal ash oxygen carrier magnetic separation and heat recovery method and system, and belongs to the technical field of coal chemical chain gasification. The system comprises a circulating fluidized bed reactor (a fuel reactor and an air reactor), a gasifying agent supply device, a magnetic separation device, a cyclone separator, an air preheating heat exchanger, a condenser, a gas-liquid separator, a two-way material circulation control device and a heat energy recovery system. The system recycles heat of oxygen carrier particles by taking vapour of a gasifying agent as a fluidizing medium and sends the heat back to the reactor, and the stable self-heating operation of the system is maintained through a double-path material circulation control device. The two bottleneck problems of large mechanical loss of the oxygen carrier and high ash discharge heat loss in the chemical looping process are synchronously solved, heat in the system is recycled, the requirement for an external heat source is remarkably reduced, meanwhile, the oxygen carrier separation efficiency is improved, integrated operation of efficient separation of coal ash, oxygen carrier recovery and heat recovery is achieved, and the industrial production cost is reduced. And continuous and stable self-heating operation of the system is guaranteed under the condition that no extra large amount of heat supply is needed.

The invention provides a dry ash sorting device with an automatic unblocking function, and relates to the technical field of industrial fly ash treatment. Four supporting legs are fixedly arranged at the four corners of the bottom of the sorting box in a vertically downward mode correspondingly, and a coal inlet is vertically formed in one side of the upper end of the sorting box; a separation guide plate which is inclined inwards and downwards is arranged in an inner cavity of the separation box below the coal inlet; and two symmetrical fans are mounted at the top of the sorting box on one side of the coal inlet. The core sorting function of the device is achieved through cooperation of vibration dispersion and wind power sorting, specifically, coal ash is scattered into uniform thin curtains under driving of a vibration motor through an inclined sorting guide plate provided with inverted-V-shaped sorting fins, meanwhile, precise airflow provided by a draught fan is sprayed out of an air conveying pipe and acts on the tail end of the sorting guide plate, and the sorting effect is achieved. In this way, coarse-particle dry ash with the large specific gravity can effectively overcome airflow resistance and directly fall into the discharging box, fine particles are accurately captured by airflow, and therefore the sorting precision and efficiency are greatly improved.

The utility model relates to the field of electromechanical installation auxiliary tools, in particular to a tool storage device for electromechanical equipment installation. The technical problems that according to an existing device, coal ash falling into a box is inconvenient to clean, tools and parts are prone to being corroded, and the protection performance of the tools and the parts is poor are solved. A tool storage device for electromechanical equipment installation comprises a box body, two installation bases are fixedly connected to one side of the box body, a cover plate is rotationally connected between the two installation bases, and torsion springs are arranged between the cover plate and the two installation bases. An air bag is extruded through an extrusion frame and a limiting plate, air in the air bag enters an annular pipe through a cavity and is sprayed out through a nozzle, coal ash on tools, parts and a porous plate is blown down, the coal ash is discharged through a through hole of a box body, and the coal ash falling into the box body can be conveniently cleaned when the box body moves; and the protection performance on tools and parts is improved.

The present invention discloses a method for reducing slagging and fouling of high-temperature heating surfaces of boilers, which comprises the following steps: 1. Defining the position of the flue gas window at the furnace outlet; 2. Obtaining the basic coal quality parameters of the coal sample, including V daf , S t,ar , A d %, ST, coal ash component values (Fe2O3, CaO, MgO, Na2O, K2O), Cl ar ; 3. Determining the flue gas temperature at the furnace outlet according to the coal quality parameters of the steam coal; 4. Determining the flue gas temperature at the bottom of the platen according to the coal quality parameters of the steam coal. The method of the present invention is simple and fast, and is obtained through a large number of evaluations, researches and calculations on the matching of boiler design, fuel characteristics and boiler operation results. It has high engineering application value and can guide the design, operation optimization of pulverized coal boilers and the blending of fuels fed into the furnace. It can reduce the slagging and fouling of the platen superheater and the high-temperature heating surfaces of the horizontal flue, and improve the safety of boiler operation.

The invention provides a resistance self-heating type solid hydrogen storage reactor, which belongs to the technical field of hydrogen energy storage and comprises a solid hydrogen storage component, a heat management component and an electric heating component. The porous solid hydrogen storage material is a magnesium-based composite material doped with coal ash and slag, has a porous structure and intrinsic conductivity, and realizes rapid and uniform spontaneous heating through a Joule effect; the heat exchange plates and the hydrogen storage materials are alternately distributed, a circulating pump drives a heat exchange medium and a phase change material storage tank to form closed-loop heat management, and heat recovery in the hydrogen storage stage and heat supply in the hydrogen desorption stage are achieved; the electric heating unit supplements Joule heat through an external power supply, and the operation state is controlled in real time in combination with the temperature regulation and control module. The problems of thermal response lag, uneven temperature and high energy consumption of traditional solid hydrogen storage are solved, the hydrogen storage / desorption rate, the cycle stability and the energy utilization efficiency are remarkably improved, and the method is suitable for large-scale long-period hydrogen storage of renewable energy sources.

This invention relates to the field of iron and steel metallurgical process optimization technology, and in particular to a method for evaluating the harmfulness of coal ash behavior. The method uses a coal ash behavior harmfulness index to evaluate the degree of harm of coal ash to blast furnace smelting. The harmfulness of coal ash behavior is defined as HICA = [w1 × (K2O + Na2O) + w2 × Fe2O3] × f(ST); where HICA is the coal ash harmfulness index, K2O is the mass percentage of K2O in the coal ash, Na2O is the mass percentage of Na2O in the coal ash, Fe2O3 is the mass percentage of Fe2O3 in the coal ash, w1 and w2 are weighting coefficients, satisfying w1 + w2 = 1 and w1 > w2, ST is the softening temperature of the coal ash, and f(ST) is a temperature correction function. This invention provides a comprehensive and accurate method for quantifying the harmfulness of coal ash to blast furnace smelting, forming a comprehensive indicator that can directly and comprehensively warn of the operational risks of coal ash to blast furnaces.