115 results about "Coal storage" patented technology

The invention discloses a coal storage and transportation intelligent management method and system, relates to the technical field of intelligent management systems, and aims to solve the problems of lack of environment monitoring, scheduling decision lag, extensive safety response and serious data island in the prior art. The method comprises the following steps: collecting the physical state, environmental parameters and operation behavior data of a coal storage yard in real time through a distributed sensor network; constructing a three-dimensional dynamic digital twinborn model and inputting the model into a time sequence neural network to predict the risk of spontaneous combustion, collapse or dust explosion in the future; and generating a dynamic scheduling instruction in combination with the task priority and the equipment state, and triggering a multi-level security response mechanism. The system comprises a sensor network module, a data fusion modeling module, a risk prediction module, a scheduling optimization module, and a closed-loop control and safety response module. According to the scheme, safety early warning preposition, scheduling decision intelligent optimization and resource energy efficiency collaborative improvement in the storage and transportation process are achieved, and the response capability and operation reliability of the coal supply chain are remarkably enhanced.

The invention provides a dual-time-scale optimization scheduling system and method considering diesel storage insurance supply and new energy consumption, and the method comprises the steps: collecting a plurality of data in real time, and outputting a historical data set and real-time monitoring data to a scheduling module; based on the wind and light output predicted values and load predicted values of the day before dispatching and the dispatching day, a multi-target optimization model is constructed, an energy storage charging and discharging plan, a diesel generator start-stop plan and an electric vehicle dispatching instruction are output, and cross-day energy transfer is achieved; on the basis of a model prediction control principle, 15 minutes are taken as a scheduling step length, a day-ahead scheduling plan is corrected in a rolling manner in combination with ultra-short-term source load prediction data, and prediction deviation is stabilized; controlling charging and discharging switching of the energy storage system, dynamic adjustment of the charging power of the electric vehicle and the operation state of the charging pile; through cooperative operation of day-ahead pre-scheduling and intra-day rolling optimization, source-load balance and low-carbon operation are realized. According to the scheduling system, long-period energy planning and short-period dynamic correction are both considered, and the self-consistency and low-carbon property of the off-grid charging station are improved.

The utility model discloses a coal mill powder outlet pipe external bypass powder bin peak regulation system which is installed on a powder outlet pipe at an outlet of a coal mill and comprises a bypass powder bin, a bypass air powder pipe, a powder storage control valve, a powder feeder and an exhaust pipe. A bypass connector, a powder feeding port and an air return port are formed in the side wall of the powder outlet pipe. An air-powder separator is arranged at the top in the bypass powder bin, and an air-powder inlet and an exhaust gas outlet are formed in the air-powder separator; one end of the bypass pulverized coal pipe is communicated with the bypass interface, and the other end is tangentially connected into the pulverized coal inlet; the powder storage control valve is arranged on the bypass interface; a powder feeding inlet and a powder feeding outlet are formed in the powder feeder, the powder feeding inlet is communicated with the bottom of the bypass powder bin, and the powder feeding outlet is communicated with the powder feeding opening; and the other end of the exhaust pipe is communicated with the air return port. The device realizes rapid and accurate dynamic matching of a fuel system and a combustion system, is safe and environment-friendly, has an ingenious, simple and practical structure, and is easy to transform and popularize.

The invention discloses a heat collection-heat storage system flow regulation and control method for improving the flexibility of a light-coal-storage complementary power generation system. The light-coal-storage complementary power generation system comprises a coal-fired power generation unit and a heat collection-heat storage system. With the control targets of coping with solar fluctuation and meeting the rapid load change requirement of the light-coal-storage complementary power generation system, the actual value of the mass flow of a working medium on the heat collector side is calculated and adjusted by collecting the solar radiation intensity and the operation data of the light-coal-storage complementary power generation system; the change rate of the water supply mass flow entering the working medium-water heat exchanger is calculated on line according to the variable quantity required by the working capacity of unit steam, and the actual value of the water supply mass flow entering the working medium-water heat exchanger and the actual value of the working medium mass flow of the working medium-water heat exchanger side are adjusted; and after the variable load instruction is finished, a model prediction control algorithm is adopted to update the actual values of the feed water mass flow entering the working medium-water heat exchanger and the working medium mass flow on the working medium-water heat exchanger side. The method can improve the operation flexibility of the system and is simple to operate.

The utility model discloses a coal bunker dredging device, which belongs to the technical field of coal bunkers and comprises a coal bunker frame, a plurality of adjacent coal storage chambers are arranged in the coal bunker frame, and every two adjacent coal storage chambers are separated from each other through an inner reinforcing rib. A discharging bottom plate is installed at the bottom of each coal storage chamber, and a discharging opening is formed in the middle of each discharging bottom plate. Material tables which are distributed on the left side and the right side of the discharging opening and gradually incline and descend towards the discharging opening are installed above the discharging bottom plate, a dredging turning plate is rotationally installed at the top of each material table through a connecting shaft, and a driving mechanism for driving the dredging turning plates to turn upwards is installed below the discharging bottom plate. When the coal chute at the bottom of the coal bunker conveys coal, the driving mechanism is started to drive the dredging turning plate to turn upwards frequently, so that the flowability of the coal in the coal storage chamber can be improved, the falling speed of the coal in the coal storage chamber is accelerated, and the purpose of dredging the coal is achieved.

The invention discloses an opencast coal mine coal spontaneous combustion incubation period prediction method suitable for a negative temperature condition, and relates to the technical field of coal spontaneous combustion prediction. The method comprises the following steps: firstly, carrying out an oxygen adsorption dynamic experiment on a to-be-detected coal sample at a constant temperature of-20 to 100 DEG C to obtain a low-temperature oxygen adsorption rate constant and establishing a function relationship between the low-temperature oxygen adsorption rate constant and the temperature; secondly, calculating ice melting latent heat according to the ice content in the coal sample to be detected, and introducing the ice melting latent heat as a key energy loss item into the heat-mass transfer model of the coal pile; further, establishing a coal pile energy balance equation comprehensively considering oxidation heat release, ice melting latent heat consumption and a heat dissipation process; and finally, solving the equation through a numerical method, and calculating the time required by the coal pile from the initial negative temperature rise to the critical spontaneous combustion temperature so as to obtain the accurate coal spontaneous combustion latency. The method is particularly suitable for mines in cold regions, surface mines and winter coal storage yards.

The invention belongs to the technical field of comprehensive utilization of coal gangue resources, and particularly relates to a layered double-metal hydroxide composite gel flame-retardant material based on coal gangue and a preparation method and application of the layered double-metal hydroxide composite gel flame-retardant material based on the coal gangue. The method comprises the following steps: preparing an acid leaching solution by taking coal gangue as a silicon-aluminum source in a deep eutectic solvent system, and adding metal salt into the acid leaching solution to provide divalent and trivalent metal ions required by a bimetal system; and mixing the pickle liquor with the guar gum / bentonite composite gel to form the composite gel flame-retardant material with a gel support structure. According to the invention, the resource utilization of a large amount of solid waste of the coal gangue is realized, the method also has a green low-consumption process and excellent flame-retardant inhibition performance, and can be widely applied to spontaneous combustion inhibition of a coal gangue storage yard, flame-retardant protection in a coal storage and transportation process and environment-friendly flame-retardant fillers in polymer composite materials and building materials.

The invention relates to the technical field of maintenance equipment, in particular to an auxiliary device used in the maintenance period of a high-pressure heater and a using method of the auxiliary device. In the use process, a first material guide pipe is connected with a material injection opening of a coal mill, meanwhile, a second material guide pipe is connected with existing coal storage equipment, untreated coal is injected into a first screening frame through a material injection frame, meanwhile, an adjusting bolt is released and screwed, and then rotation adjustment of the use angle can be conveniently and rapidly carried out; then, the size of a communicating area of the second screening opening and the first screening opening can be conveniently adjusted by rotating an adjusting ring, so that the coal falling into the first screening frame can be screened under the blocking of the communicating area of the first screening opening and the second screening opening; and small coal can fall into the second screening frame through the first screening opening and the second screening opening.

The invention discloses a coal storage yard rapid three-dimensional reconstruction data acquisition device, which relates to the technical field of coal chemical industry and comprises a guide rail, a fixing mechanism, a moving mechanism, an image acquisition mechanism, a power supply mechanism, a cleaning mechanism and a central control room. The fixing mechanism is arranged below the guide rail, the moving mechanism is arranged on the fixing mechanism, the image collecting mechanism is arranged below the moving mechanism, and the cleaning mechanism is arranged at one end of the fixing mechanism. The moving mechanism, the image acquisition mechanism and the cleaning mechanism are all electrically connected with the power supply mechanism, and the moving mechanism, the image acquisition mechanism and the cleaning mechanism are all electrically connected with the central control room; according to the rapid three-dimensional reconstruction data acquisition device for the coal storage yard, the problems of limited data acquisition visual angle, expensive equipment and the like in the prior art are solved.

The application discloses a kind of chlorine-free environment-friendly coal transportation and storage antifreeze and preparation method thereof, belong to coal storage and transportation technical field, the preparation method of the chlorine-free environment-friendly coal transportation and storage antifreeze, comprising the following steps: natural oil is heated and stirred, vacuum dewatering is carried out, then amine compound is added to modify reaction, after reaction is finished, cooling is obtained Intermediate product 1, water, thickening agent and metal corrosion inhibitor are added to it again, stir uniformly, obtain the chlorine-free environment-friendly coal transportation and storage antifreeze.I.e. the antifreeze prepared in the application forms weak interface on the surface of coal and carriage or warehouse, is easy to destroy, prevents "freezing vehicle phenomenon";And no chlorine component is used, fundamentally eliminates the corrosion problem caused by chloride ion;It is relatively simple to clean simultaneously because it has certain emulsifying capacity itself;And raw material is more natural oil or recycled oil, with the advantages of green environmental protection.

The invention relates to a dredging device for a coal storage bunker, which comprises an operation platform, the operation platform comprises an operation trolley and an operation mechanism arranged on the operation trolley, the operation mechanism comprises a drill bit assembly and a drill rod connected with the drill bit assembly, the drill rod is constructed to be in a first form with a rigid structure, and the first form is in a second form with a rigid structure; the second form is of a flexible structure; the operation trolley at least comprises a drill rod clamping mechanism, and the drill rod clamping mechanism is configured to enable the drill rod to be kept in a first form and enable the drill rod to be switched between the first form and a second form; the drill rod recovery device comprises a supporting part and a containing part, and the supporting part is constructed to support the drill rod which is of a second form and is of a flexible structure; and the accommodating part is configured to accommodate a plurality of drill rods which are connected in sequence and are in the second form. The dredging device for the coal storage bunker can go deep into the coal bunker to conduct multi-angle and large-range wall-hanging coal dredging operation.

The invention relates to the technical field of microcrystalline plates, in particular to an industrial microcrystalline plate manufactured from graphite tailings and a manufacturing method, the industrial microcrystalline plate is prepared from the following raw material components in percentage by mass: 62-70% of graphite tailings, 6-10% of quartz sand, 6.0-7.0% of sodium carbonate, 5-7% of limestone, 2-2.8% of dolomite, 3-4% of sodium fluosilicate, 1.5-2% of sodium nitrate and 0.1-0.2% of cerium oxide. By analyzing the components of the graphite tailings and adopting a specific formula combination, the graphite tailings are manufactured into the microcrystalline plate with excellent industrial wear resistance and corrosion resistance, so that the problems that the microcrystalline plate manufactured by the existing formula is poor in wear resistance and poor in corrosion resistance are solved. The wear-resistant lining is not applicable to gangue bins, coal storage bunkers, dumper rooms and coal preparation plant equipment in the coal industry.

This invention discloses an intelligent dust removal device and method for coal storage plants. The invention relates to the field of dust pollution control technology, including a coal hopper and a dust collection pipeline. It further includes: a rubber tube installed outside the bottom of the coal hopper to extend the bottom of the hopper and lower the coal outlet position; an ash-blocking hood fitted over the rubber tube to extend the bottom of the rubber tube; and an ash-blocking membrane connected at the top between the rubber tube and the ash-blocking hood. By installing a rubber tube and an ash-blocking hood at the bottom of the coal hopper, the high coal outlet of the hopper is significantly lowered. During coal feeding, the distance between the bottom and the hopper can be minimized, thereby reducing dust. The larger outer area of ​​the ash-blocking hood can cover the dust emanating from the bottom of the rubber tube, while the ash-blocking membrane at the top ensures that dust only diffuses inside the ash-blocking hood. Combined with the dust extraction from the dust collection pipeline, a good dust removal effect is achieved. The extracted dust is then introduced into a spray dust suppression device for spray dust suppression.

The utility model relates to the field of coal mine transportation devices, in particular to a coal caving transportation device. The coal caving conveying device comprises a coal storage bin, a discharging port, a dust removal device, a coal dust collecting bin, a transport cart, a first motor and a dust removal roller, supporting tables are symmetrically and fixedly connected to the bottoms of the two sides of the coal storage bin, the discharging port is fixedly connected to the center of the bottom of the coal storage bin, the dust removal device is fixedly connected into the supporting tables, and one end of the dust removal device sleeves the outer wall of the discharging port. The dust removal device comprises a dust blocking column and dust suction ports, the dust blocking column is fixedly connected to the side face of the discharging port, the dust suction ports are fixedly connected to the inner surface of the dust blocking column at equal intervals, coal dust collecting bins are fixedly installed at the bottoms of the supporting tables, a transport vehicle is arranged between the two supporting tables, and dustproof cloth is arranged at the top of the transport vehicle. And first motors are fixedly mounted at the ends, away from the discharging opening, of the two supporting tables correspondingly, and the output ends of the two first motors are fixedly connected with dust removal rollers correspondingly. The coal caving conveying device has the advantages of being efficient in dust removal capacity and capable of improving benefits.

The utility model discloses a wet sticky material buffering and uniform mixing device which comprises a filter press lower chute, a coal storage hopper and a spiral coal feeder which are sequentially arranged from top to bottom, the left side and the right side of the bottom end of the coal storage hopper are arranged in an up-down staggered mode, and arch breaking mechanisms are arranged on the inner walls of the left side and the right side of the coal storage hopper. The arch breaking mechanism comprises a plurality of coal pushing plates arranged at equal intervals, a connecting rod used for connecting the multiple coal pushing plates and a hydraulic push rod connected with one end of the connecting rod, the connecting rod is slidably connected to the inner wall of the coal storage hopper, the coal pushing plates are arranged in the width direction of the coal storage hopper, and the connecting rod is arranged in the length direction of the coal storage hopper; the coal pushing plates are hinged to the inner walls of the left and right sides of the coal storage hopper, and the bottom ends of the coal pushing plates are movably connected with hydraulic push rods; according to the utility model, the influence of short-time concentrated feeding of the filter-pressing coal slime on the product quality can be effectively reduced, the phenomenon that the filter-pressing coal slime is arched in the chute under the machine due to high moisture and high viscosity is avoided, meanwhile, the continuous and uniform output of the wet and sticky coal slime is ensured, and the buffering time of the coal slime is prolonged.

The present application relates to a kind of coal bunker coal level precision control method during coal-fired boiler outage, comprising: unit plan is resolved before a day to each coal bunker coal level control;Actual calorific value of current coal into furnace and the actual coal storage capacity of each coal bunker are calculated;Set the outage sequence of coal mill and the load node of outage;The theoretical coal requirement of each coal bunker corresponding to pulverizing system is calculated;The theoretical bunker capacity of each coal bunker is calculated, and the corresponding weight of coal is added to the corresponding coal bunker;After the coal bunker is burned empty, the corresponding pulverizing system is stopped;Generator unit is resolved;After the coal bunker corresponding to the last coal mill is burned empty and purged, boiler main fuel is tripped.The beneficial effects of the present application are: the present application can accurately calculate the coal requirement of different pulverizing system, and finally through the reasonable control of the coal bunker amount and the coal amount of each coal feeder, the shutdown resolution time can be accurately matched, and the problem of coal bunker burning empty in advance or delaying is effectively avoided.

The invention relates to the technical field of coal storage equipment, in particular to an anti-coal-blocking coal bunker which comprises a coal bunker body, a fixing frame, a stirring mechanism, a driving motor, a first linkage mechanism and a second linkage mechanism. The stirring mechanism is rotatably arranged at the position, close to the discharging port, in the coal bunker body; the driving motor is in driving connection with the first linkage mechanism and used for driving the flow guide sliding plate to oscillate up and down. The second linkage mechanism is in transmission connection with the first linkage mechanism and is used for driving the stirring mechanism to rotate. The anti-blocking device has the beneficial effects that the first linkage mechanism and the second linkage mechanism are synchronously driven by the driving motor, so that the cooperative action of up-and-down reciprocating oscillation of the flow guide sliding plate and rotation of the stirring mechanism is realized, and the anti-blocking effect is remarkably improved: the stirring mechanism rotates near the discharge port, so that coal arching and loose accumulated coal briquettes can be effectively broken; vibration of the flow guide sliding plate can continuously apply power to falling coal, retention and blockage at an outlet are avoided, a double anti-blocking mechanism is formed through cooperation of the two, and the coal blocking probability is greatly reduced.

The utility model relates to cable technical field especially relates to a wear -resisting, anti -twist type, high -strength drag cable, including the outer sheath, the inside of outer sheath is provided with the protective braid, the inside of protective braid is provided with the inner protective layer, the inside of inner protective layer is provided with the shield layer, the inside of shield layer is provided with the cable, the cable is composed of a plurality of conductors and the insulating layer of setting in the conductor periphery, the utility model discloses the drag cable is suitable for the rated voltage 3kV and below wind power, headstock, rock drilling jumbo, caterpillar type hoist, conveyer and unloading coal storage device two sets of dumper system drag order mobile shielded flexible cable, generally used in mobile installation, connect low -voltage distribution board and power converter and other equipment.

The application discloses a kind of for coal conveying system of thermal power plant sedimentation tank coal slime processing system and method, it is related to the technical field of sedimentation tank maintenance processing of coal conveying system of thermal power plant.The sedimentation tank coal slime processing system, including multistage sedimentation filter tank, sewage pump, single-beam grab crane, variable angle hopper, belt conveyor.Multistage sedimentation filter tank is set in the vicinity of coal storage yard coal unloading belt, and the function of gradually sedimentation filtration coal conveying system containing coal wastewater is played, sewage pump is used to discharge the sewage of sedimentation tank outside system;Single-beam grab crane is used to grab and transport coal slime in the sedimentation tank to coal conveying belt;Variable angle hopper is used to unload coal slime on belt conveyor;Belt conveyor is the coal conveying system coal storage yard coal unloading equipment.The application has simple structure, is convenient and practical, can effectively solve the environmental pollution problem in the process of coal slime cleaning in coal conveying system sewage discharge system, and also can improve personnel work efficiency, reduce production cost.

The invention discloses an automatic cleaning device for piled coal at a fault position of an underground belt conveyor, which comprises a running track arranged along the belt conveyor and fixed on a roadway top plate, a coal suction machine moving along the running track and a coal storage hopper fixed on the side wall of a roadway, and the coal suction machine moves to the fault position of the belt conveyor along the running track. The coal suction machine sucks up coal accumulated on the belt conveyor and / or in the roadway through the coal suction pipe and conveys the coal into the coal storage hopper through the coal outlet pipe for temporary storage. And after the belt conveyor returns to normal operation, the coal in the coal storage hopper is conveyed to the belt conveyor through the coal conveying pipeline. By arranging the automatic coal cleaning equipment in the roadway, workers can rapidly move to the fault position along the running track while starting, the invalid time period is shortened, piled coal cleaning is conducted firstly, piled coal on an adhesive tape and piled coal in the roadway are rapidly adsorbed, and the fault processing time is remarkably shortened.

The utility model provides a hydrogen-doped pulverized coal mixed combustion device and a hydrogen-doped pulverized coal mixed combustion system. The hydrogen-doped pulverized coal mixed combustion device comprises a hydrogen distribution device, a pulverized coal conveying device, a fuel mixing device and a combustion device, the hydrogen distribution device and the pulverized coal conveying device are arranged in parallel, and an inlet of the hydrogen distribution device and an inlet of the pulverized coal conveying device are communicated with a hydrogen storage tank and a pulverized coal storage bin through pipelines respectively. Outlets of the hydrogen distribution device and the pulverized coal conveying device communicate with the fuel mixing device through pipelines so that hydrogen and pulverized coal can be mixed to form a gas-solid mixture, and the combustion device combusts the gas-solid mixture. According to the hydrogen-doped pulverized coal mixed combustion device, hydrogen and traditional energy are combined and utilized in the industry, and in the combustion process of the hydrogen-doped pulverized coal, emission of pollutants can be reduced, and sustainable low-carbon development of economy is promoted.

This utility model discloses a dehumidification device for coking coal storage, comprising a hollow, through-hole housing, with symmetrically distributed support bases fixedly connected to the bottom of the housing. This utility model belongs to the technical field of dehumidification equipment, specifically addressing the problems of natural ventilation being greatly affected by ambient temperature and humidity, the limited moisture absorption capacity of ordinary desiccant requiring frequent replacement, and the high energy consumption and uneven heat distribution of some electrically heated dehumidification devices, which easily accumulate dust inside the equipment, making cleaning difficult and affecting long-term performance.

The utility model is suitable for the technical field of storage bins, and provides a metering type buffer belt storage bin which comprises a buffer storage bin body, a machine head roller, a machine tail roller, a conveying carrier roller, a deviation rectifying carrier roller, a deviation preventing vertical roller, a driving roller, a hydraulic tensioning device and a conveying belt. The metering horizontal buffer storage bin solves the problem that an old-fashioned coal storage bin is difficult to store, many operators are reduced, materials are accurately weighed, the probability of manual maintenance is reduced, normal operation of equipment is ensured, meanwhile, an AI intelligent system is installed on the metering type buffer belt storage bin, intelligent starting and stopping are achieved, unmanned guard is achieved, and the metering type buffer belt storage bin is suitable for large-scale popularization and application. The weighing system can weigh the conveyed materials, an operator can know the weight of the conveyed materials in real time conveniently, real-time control over the coal quantity and flow is achieved, the conveying belt moves forwards only when receiving a certain weight, the number of workers watching the belt is reduced, cost is reduced, and meanwhile intelligent management of the storage bin is facilitated.

The application discloses an automatic switching system and method for a pulverized coal screw conveyor of an IGCC unit, and belongs to the technical field of coal powder distribution. The system comprises a first coal grinding conveying device, a second coal grinding conveying device, a third coal grinding conveying device and a fourth conveyor. The first coal grinding conveying device comprises a first filter, a first conveyor and a first pulverized coal storage tank. The first filter is connected with the first conveyor and the fourth conveyor through a first three-way valve respectively, and the first conveyor is connected with the first pulverized coal storage tank. A second filter is connected with a second conveyor and the fourth conveyor through a second three-way valve respectively, and the second conveyor is connected with a second pulverized coal storage tank. A third filter is connected with a third conveyor and the fourth conveyor through a third three-way valve respectively, and the third conveyor is connected with a third pulverized coal storage tank. The application can effectively avoid the occurrence of personal injury and equipment damage caused by the failure of workers to find and operate in time.

The utility model relates to coal gas generating equipment technical field discloses a coal storage device of pulverized coal gasification furnace, including coal storage hopper, the rear surface lower extreme of coal storage hopper is provided with opening and closing mechanism, and the front surface and inside of coal storage hopper are provided with anti -blocking mechanism jointly, the utility model discloses a anti -blocking mechanism is provided with, and anti -blocking mechanism effectively solved the jam problem that the coal powder leads to electrostatic force adsorption, water content agglomeration, particle bridging or inner wall adhesion, the stirring vane can dynamically break up the coal body of group coal and scatter the mechanical interlock between particles, and the scraper assembly continuously scrapes the wall adhesive layer of bin through the elastic compensation mechanism, and the flow line type material guiding design of three -segment type coal storage structure is combined, and the coal powder flow resistance is reduced significantly, the device activates the function of breaking down in the process of opening and closing linkage simultaneously, avoids the intermittent operation defect of traditional pneumatic arch breaking, can prevent the metamorphic, gas channeling and local cavity risk caused by coal powder retention, improves the continuity and reliability of the coal feeding system as a whole.

This invention belongs to the technical field of blast furnace pulverized coal injection equipment, particularly the safety injection component for high-volatile bituminous coal and the blast furnace pulverized coal injection equipment and its usage method. Addressing the problems of low combustion rate, substandard pulverized coal particle size, and susceptibility to moisture absorption during pulverized coal storage, this component features an insulation sleeve on the outer wall of the injection pipe, preheating the pulverized coal with blast furnace exhaust gas to reduce heating energy consumption and promote rapid ignition. A spiral plate inside the injection pipe enhances the mixing of pulverized coal and nitrogen, and an electric push rod at the top controls a bending plate to adjust the pulverized coal injection angle, strengthening airflow disturbance and increasing the contact area between pulverized coal and oxygen. The blast furnace pulverized coal injection equipment includes a grinding cylinder and a storage box. The grinding cylinder has a multi-stage grinding structure, with a rotating shaft driving a grinding wheel to perform primary and secondary grinding of the pulverized coal, ensuring uniform particle size. The storage box utilizes exhaust gas heat to dry the pulverized coal and suppress spontaneous combustion. By optimizing the preheating, grinding, injection, and storage processes, the equipment improves the pulverized coal combustion rate and utilization rate, ensuring production safety.

The utility model relates to the technical field of coal mine cleaning, and an embodiment of the utility model provides a mine coal bunker cleaning device, including coal bunker, the top of coal bunker is provided with steel structure support, movable cleaning device is provided on the inner wall of coal bunker, movable cleaning device includes anti -explosion electric hoist, the bottom fixed connection of anti -explosion electric hoist has the top of steel structure support, the bottom of anti -explosion electric hoist is provided with lifting steel wire rope, the surface of lifting steel wire rope is provided with power signal cable, the inner wall of coal bunker is provided with coal storage, the inner wall of coal bunker is provided with sticking coal wall, the surface of coal storage is provided with track, the inner wall of track is provided with tension device. Through the above technical scheme, the technical problem that a kind of mine coal bunker cleaning device cannot self-propelled cleaning bunker and cannot be rotated three hundred degrees operation rotation angle in related technology / prior art is solved.

The invention provides a method for predicting coke quality in a single-hole top-loading coke oven coal blending coking industrial test, belongs to the technical field of coke oven coking, and solves the problem of insufficient accuracy and reliability of coke quality prediction in a small-sized test coke oven. Cleaning equipment and emptying the coal bunker of the coal storage tower, and supplying industrial test mixed coal to a specified coal bunker according to a ratio; the coal bunker with the low material selecting position is a test bunker, and the coal bunker and the coal charging car are cleaned after remaining coal is emptied; taking test coal by a coal charging car, selecting a carbonization chamber with 1-2 holes, pushing the carbonization chamber to be empty, loading the test coal, guiding out the coke after the coke is mature, quenching the coke, and unloading the coke to a coke airing table; cleaning a coke airing table, taking a coke sample with the lumpiness of more than 60mm and the weight of more than 60kg for inspection, and conveying the residual coke to a coke bin. The test coke is produced by the single-hole carbonization chamber, the quality of the industrially produced coke is predicted by detecting the quality data of the test coke, and the method is simple and convenient to operate and high in reliability.

The invention provides a buffering storage and transportation horizontal coal bunker, and relates to the technical field of underground coal mine transportation, the buffering storage and transportation horizontal coal bunker comprises two parallel transportation rails, a plurality of coal storage bunkers, a driving assembly and a first conveying device, the four corners of the bottom of each coal storage bunker are each provided with a rolling wheel, and the rolling wheels are arranged on the transportation rails; a driving assembly is arranged at the bottom of each coal storage bin and drives the corresponding rolling wheel to rotate. The buffer storage and transportation horizontal coal bunker provided by the invention has two functions of storage and transfer, when a main belt conveyor works normally, coal conveyed from a working face is directly unloaded to the first conveying device through the horizontal coal bunker, and when the main belt conveyor is shut down or is fully loaded, the coal conveyed from the working face is directly unloaded into the horizontal coal bunker and is temporarily stored, so that the working efficiency is improved. When the main belt conveyor operates normally and no coal exists on the working face, the coal in the horizontal coal bunker is unloaded into the first conveying device, so that the function of outputting raw coal in a constant amount is well achieved, the utilization rate of the conveyor is improved, and the conveying cost is reduced.

This utility model discloses a dual-source multi-combustion system, comprising: a boiler, wherein an exhaust gas burner, a pulverized coal silo burner, and at least two air-coal burners are provided; a plurality of main combustion coal mills are connected to one or more air-coal burners; a plurality of pulverized coal storage mills are connected to the remaining air-coal burners in the boiler; a gas drying system is connected to the main combustion coal mills and the pulverized coal storage mills respectively, for drying and conveying the coal ground in the main combustion coal mills and the pulverized coal storage mills to form primary air-coal mixture; a plurality of fine powder separators are used to separate the primary air-coal mixture to form pulverized coal and exhaust gas; a plurality of exhaust gas fans are used to collect exhaust gas, and the outlets of the exhaust gas fans are connected to the exhaust gas burner and the pulverized coal storage mill respectively; a plurality of pulverized coal silos are used to collect the pulverized coal generated in the fine powder separators; a hot medium conveying system is used to convey the pulverized coal in the pulverized coal silos to the pulverized coal silo burners, and the gas drying system is also connected to the hot medium conveying system to preheat the pulverized coal conveyed to the pulverized coal silo burners.