1333 results about "Tuyere" patented technology

The invention provides a nitrogen oxide incineration equipment control method for drying carbonization, which comprises the following steps: acquiring combustion characteristic data of high-humidity sludge blocks in a fluidized bed incinerator, and extracting nitrogen oxide peak intensity, occurrence time, duration and peak shape steep degree to obtain a parameter set; real-time load data of the induced draft fan are obtained, the hearth negative pressure stability fluctuation range is analyzed in combination with the adjustment value, and if fluctuation exceeds a preset safety range, the load adjustment amplitude of the induced draft fan is calculated, and a load adjustment curve is generated; a multi-actuator cooperative control time sequence model is constructed based on the load adjustment curve and the adjustment value, the nitrogen oxide peak generation time and the duration are fused, the cooperative adjustment time sequence of secondary air supply and the draught fan load is calculated, and a control instruction is generated; and a control instruction is transmitted to a fluidized bed incinerator executing mechanism, the opening state of the tuyere and the air volume ratio are adjusted, the load of the induced draft fan is updated, and the adjusted hearth operation parameters are continuously monitored.

The invention relates to the technical field of air feeder regulation and control, and discloses an intelligent regulation and control method and system for an air conditioner air feeder. Performing parameter preprocessing to obtain an environment data set; according to the environment data set and the indoor geometric features, a fluid dynamic model is adopted to calculate and simulate the motion state of indoor airflow, and a temperature prediction result is obtained; performing result analysis based on a preset constraint condition to obtain an initial parameter scheme; performing feedback processing on the parameter scheme to obtain real-time feedback data; based on a preset stability standard ratio, a tuyere parameter control algorithm is adopted for calculation, and a parameter correction scheme is obtained; and balance adjustment is conducted, a final parameter scheme is obtained, and dynamic response and accurate control over the air supply state are achieved in combination with the correlation mechanism of indoor airflow movement and air outlet parameters.

The present invention provides a method and apparatus for predicting the temperature of molten iron in blast furnace smelting, an electronic device, and a storage medium. The method comprises: acquiring original fuel parameters, blast parameters, coal gas blowing parameters, furnace top coal gas parameters, and slag iron parameters in a blast furnace smelting process; on the basis of the original fuel parameters, the blast parameters, and the coal gas blowing parameters, determining the furnace bosh coal gas amount, the furnace bosh coal gas component, and the theoretical coal gas combustion temperature at a tuyere rotation area; determining the direct reduction degree of iron ore on the basis of the furnace top coal gas parameters, the slag iron parameters, the furnace bosh coal gas amount, and the furnace bosh coal gas component; determining a gas-liquid heat exchange coefficient on the basis of the theoretical coal gas combustion temperature, the furnace bosh coal gas component, the slag iron parameters, and the coal gas component after direct direction; and on the basis of the gas-liquid heat exchange coefficient, the direct reduction degree of iron ore, the theoretical coal gas combustion temperature, and the slag iron parameters, performing iterative solution of the molten iron temperature and the coal gas temperature, so as to complete prediction of the temperature of molten iron in the blast furnace smelting. The accuracy of molten iron temperature prediction can be improved, and a good basis is provided for blast furnace smelting control, ensuring stable and smooth operation of a blast furnace.

The invention relates to the technical field of metro platform screen doors, in particular to a novel particulate matter-preventing energy-saving metro platform screen door with an adjustable tuyere, which comprises a metro platform, and a plurality of left-side perforated platform screen doors and right-side perforated platform screen doors are fixedly mounted on two sides of the metro platform respectively; a rotating mechanism is movably connected to one side of each shielding door with holes in the left side and one side of each shielding door with holes in the right side, an automatic control system is fixedly connected to one side of one shielding door with holes in the left side, and a left tunnel and a right tunnel are correspondingly arranged on one side of each shielding door with holes in the left side and one side of each shielding door with holes in the right side. The automatic control system adjusts the angle of the rotary baffle and closes the holes in the shielding doors on the two sides through a control circuit, on one hand, the filter screen can filter out coarse particles, on the other hand, the shielding doors can block fine particles such as PM2.5, and therefore dispersion of the particles in the tunnel into the platform is reduced, and in summer, due to the fact that the holes of the shielding doors are closed, the shielding doors can not be blocked. The loss of cold air in the platform into the tunnel is reduced, and energy is saved.

The invention relates to the technical field of tuyere sleeve rear body manufacturing, and provides a tuyere sleeve rear body extrusion forming device which is used for carrying out necking extrusion on a stock column for manufacturing a tuyere sleeve rear body and comprises a workbench, and the workbench is provided with a containing groove; the lining ring plate is detachably arranged in the containing groove, and the lining ring plate encloses the containing groove into a containing space with the diameter gradually reduced from bottom to top. The multiple extrusion blocks are arranged in the circumferential direction of the inner wall of the lining ring plate at intervals, the multiple extrusion blocks are synchronously arranged in a sliding mode relative to the axis direction of the lining ring plate, and the multiple extrusion blocks define a machining space used for containing material columns. The limiting top plate is arranged above the machining space in a lifting mode, and the limiting top plate is used for pressing the material column located in the machining space after moving downwards. By means of the technical scheme, the problems that in the prior art, the surface of a cast afterbody is rough, a large amount of follow-up machining treatment needs to be conducted, and the production period is prolonged are solved.

The utility model relates to the technical field of dust treatment equipment, and discloses a dust removal equipment based on iron ore dressing processing, including: a base plate, a support column No. 1 is fixedly connected to the right side of the upper surface of the base plate; a dust removal mechanism, and the dust removal mechanism is arranged above the base plate. The utility model sets a primary treatment box, a filter screen, an air valve, an air guide pipe and a secondary treatment box. When the fan is running, the fan will extract dust-containing gas from the outside through the air inlet and allow these gases to enter the interior of the primary treatment box through the air outlet. When the dust-containing gas passes through the filter screen, the coarse dust particles in the gas will be blocked by the filter screen on the right side of the primary treatment box and fall into the dust storage box. When the gas enters the interior of the secondary treatment box through the air guide pipe, the fine dust particles in the gas will mix with water to form a suspension, which enhances the overall treatment effect of the base plate on fine particle pollutants and improves the overall dust removal effect of the base plate.

The invention discloses a method for calculating the hot lag time of tuyere blowing coal gas of a hydrogen-carbon-rich circulating oxygen blast furnace, which comprises the following steps of: calculating the hot lag time of tuyere blowing high-temperature upgraded coal gas according to the blank volume of the hydrogen-carbon-rich circulating oxygen blast furnace, the time required by each batch of materials, the volume between the lower part of a furnace body and the central line of a tuyere and a smelting period; and according to the heat lag time and the smelting period of the tuyere injection decarburized gas, the adjustment time of the tuyere injection decarburized gas is confirmed, and finally an operation basis is provided for furnace heat adjustment of the hydrogen-rich carbon circulation oxygen blast furnace. According to the method, the problem that the furnace heat adjusting time is difficult to determine due to the heat hysteresis of the tuyere blowing gas of the hydrogen-rich carbon circulating oxygen blast furnace is solved.

The invention discloses a continuous nickel smelting method and equipment, the equipment comprises a smelting furnace, an electric furnace and a converting furnace, the smelting furnace is provided with a feeding port and a reducing agent and vulcanizing agent feeding port, and one side of the electric furnace is directly communicated with the bottom of one side of the smelting furnace; one side of the converting furnace is directly communicated with the bottom of the other side of the smelting furnace, the heights of the furnace bottoms of the electric furnace, the smelting furnace and the converting furnace are sequentially reduced, the lower part of the smelting furnace is provided with a molten pool reaction area with a copper water jacket for cooling, the molten pool reaction area is provided with a group of primary tuyeres, and the group of primary tuyeres is provided with a group of secondary tuyeres. The upper part of the smelting furnace is provided with a group of secondary tuyeres; and the converting furnace is provided with a spray gun. According to the invention, the laterite-nickel ore smelting, settling separation and blowing functions are simultaneously realized by one furnace partition, a blowing furnace and a settling electric furnace do not need to be independently configured, and the maximum utilization of the sensible heat of the slag is realized.

The utility model discloses a bottom-feeding and top-returning dust removal system for a welding workshop, which belongs to the related technical field of dust removal and comprises a dust removal main machine, air inlet pipelines are arranged on two sides of the dust removal main machine, and air inlet barrels are arranged at the lower ends of the air inlet pipelines and are adjustable; an air return pipeline is arranged at the upper end of the dust removal main machine and provided with an air return opening. A cleaning assembly used for cleaning the filter screen on the air return opening is movably arranged on the air return pipeline. The system is used for solving the technical problem that in the prior art, the effect of centralized collection and treatment of regional welding smoke dust is poor, the adjustable large-air-volume dispersion type air supply barrel is adopted at the bottom of the system for supplying air, upward thrust is applied to the smoke dust generated by welding, the original 6-8 m suspended smoke dust is pushed to move upwards, and the smoke dust is prevented from falling off. And the air is captured by a grid return air inlet at the top of the crane and enters a dust removal main machine for purification treatment.

The bypass ventilation system comprises an air taking opening formed in a smoke chamber, a quench cooler, a cyclone dust collector, a bag dust collector, an ash bin and a pneumatic conveying device. The quench cooler adopts a volute structure, and an air inlet port of the quench cooler is connected with a quench fan; high-temperature flue gas passing through the quench cooler enters the cyclone dust collector, coarse particles in the flue gas are returned to the decomposing furnace by the cyclone dust collector, and relatively coarse particles are returned to the kiln tail, so that partial material consumption and heat consumption are reduced; fine particle dust separated by the cyclone dust collector enters a cloth bag dust collector to be collected, and clean air is directly discharged into a kiln tail chimney through an exhaust fan; ash collected in the cloth bag dust collector is firstly conveyed into the ash bin, and then the ash is conveyed to the steel bin at the clinker conveying belt or conveyed to the ash temporary storage bin of the water washing workshop and then is subjected to water washing. According to the bypass ventilation system, the skinning problem can be effectively relieved, and stable operation of a production line is guaranteed; and the quality of the cement is ensured.

The invention discloses a CO2 circulating injection ironmaking method of a hydrogen-rich carbon circulating oxygen blast furnace, which comprises the following steps: heating CO2 separated and captured from top gas of the blast furnace to 2500 DEG C or above, and then circularly injecting into the blast furnace from a tuyere; and further purifying the residual CO and H2 in the top gas of the blast furnace to prepare a chemical product. The invention further discloses a CO2 circulating injection ironmaking system of the hydrogen-carbon-rich circulating oxygen blast furnace. The method solves the problems that the carbon emission reduction potential of a hydrogen-rich carbon circulating oxygen blast furnace process is not fully exerted, and CO2 separated and captured from top gas is not fully utilized.

The invention relates to the technical field of ironing machines, and discloses an ironing machine. The ironing machine comprises an ironing part consisting of a heating cabin and a dust collection box which are isolated from each other, a heating body assembly is arranged in the heating cabin body, the heating body assembly comprises a heating main body used for generating steam, a main heat pipe and an auxiliary heat pipe which are connected in parallel are arranged on the heating main body, and the auxiliary heat pipe is connected with a fan in series; an air port of the fan is communicated with the interior of the dust collection box, and a plurality of adsorption holes communicated with the interior of the dust collection box are formed in the surface of the dust collection box. Through the adsorption function of the fan, adsorption and ironing are combined, one main heat pipe is used for heating to produce steam, the other auxiliary heat pipe is used for auxiliary heating and pressure division, and the back of the auxiliary heat pipe can be connected with a low-voltage load, so that an additional driving plate does not need to be installed to supply power to the fan, the heating efficiency is improved, and the heating cost is reduced. And the cost is greatly reduced.

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.

A plateau permafrost region sand dune treatment system relates to the technical field of sand dune treatment and comprises a first treatment unit, a second treatment unit and a third treatment unit. The first treatment unit comprises a first treatment bottom layer and a first treatment top layer, and the first treatment bottom layer and the first treatment top layer are arranged in the height direction of the first sand dune; the first treatment top layer comprises a first coal gangue soil layer and a first vegetation layer, and the first vegetation layer is planted in the first coal gangue soil layer; the second treatment unit comprises a second treatment bottom layer and a second treatment top layer, and the second treatment bottom layer and the second treatment top layer are arranged in the height direction of the second sand dune; the second treatment top layer comprises a second coal gangue soil layer and a second vegetation layer, and the second vegetation layer is planted in the second coal gangue soil layer; and the third treatment unit is arranged in an area corresponding to the tuyere. Solid waste recycling and ecological restoration are deeply fused, the problem that a traditional sand stabilization material lacks ecological functions is effectively solved, and the sand stabilization material has the sand stabilization function and the vegetation restoration function.

The invention relates to the technical field of intelligent household appliances, and discloses a range hood control method and device, an intelligent range hood and a storage medium. Whether the air quality data meet preset conditions or not is detected; when the air quality data does not meet the preset condition, the current working mode and air opening configuration information are determined; according to the working mode, the tuyere configuration information and the air quality data, each tuyere is controlled to conduct air purification on the target space, and therefore the situation that due to the behavior of manual selection of a user, the purification mode does not correspond to the actual air quality data is avoided, and meanwhile the control real-time performance of the range hood is improved.

The invention provides an organic solid waste drying and metal extracting integrated device and a using method thereof, and belongs to the field of environmental science and engineering. A series of problems of low utilization rate of organic solid waste heat energy, more pollutants generated in the extraction process of metal-containing wastes, high metal oxidation loss rate and the like in the prior art are solved. The integrated device comprises a pyrolysis chamber, a high-temperature cracking chamber, a material drying chamber, a steam boiler, a cyclone dust removal chamber, a spraying chamber, an electrostatic dust removal chamber, a water bath purification chamber, a biomass gas treatment chamber and a metal carbonization chamber, the pyrolysis chamber is connected with the high-temperature cracking chamber through an air passing opening, and a first biomass air inlet is formed in the pyrolysis chamber; a second biomass air inlet is formed in the high-temperature cracking chamber, the high-temperature cracking chamber is connected with the material drying chamber through a lower hot air pipe and an upper hot air pipe, an air drying cylinder is arranged in the material drying chamber, the upper hot air pipe is communicated with the interior of the air drying cylinder, and the lower hot air pipe is communicated with the outer space of the air drying cylinder. The device is mainly used for drying organic solid waste and extracting metal in waste.

The invention provides a method and a device for optimizing a comprehensive injection device based on an oxygen blast furnace. The method comprises the following steps: acquiring basic parameters of a to-be-optimized comprehensive injection device to construct a three-dimensional simulation model; according to the structural form parameters, the working parameters and the injection parameters, injection simulation is conducted on the three-dimensional simulation model, and a simulation result is obtained; if the simulation result does not meet the optimization requirement, the parameters are updated, injection simulation is conducted again till the simulation result meets the optimization requirement, and the comprehensive injection device to be optimized is optimized according to the current structural form parameters, the working parameters and the injection parameters. According to the method, a numerical simulation method is adopted to calculate a temperature field, a velocity field and a pressure field formed by oxygen, pulverized coal and a main injection medium in a tuyere area of blast furnaces with different volumes under the working condition of furnace top gas circulation oxygen blast furnace smelting. By controlling the mixing uniformity of oxygen and pulverized coal, sufficient combustion of the pulverized coal is ensured, the relative position relation of the oxygen-coal lance is optimized, interaction conflicts between injection devices are avoided, and the maintenance difficulty is reduced.

The invention relates to the technical field of hair driers, in particular to a hair dryer tuyere and a hair dryer. The air nozzle of the hair drier comprises a first air guide piece, a first shell and a second shell, and the length of the first shell is smaller than that of the second shell; the second shell comprises an air guide section and an air outlet section which are connected with each other, and the air guide sections of the first shell and the second shell are matched with each other to form an air guide channel structure with an air inlet and an air outlet; the air outlet is of a flat opening structure; the air outlet section is obliquely arranged or bent relative to the air guide section, one part of the first air guide piece is arranged in the air outlet, and the other part of the first air guide piece is arranged outside the air outlet. According to the air nozzle of the hair dryer, the first shell and the second shell are adopted to form the air guide channel structure, the first air guide piece and the air outlet section of the second shell, so that airflow at the air outlet generates a coanda effect, adsorption fluid is formed, the hair is straightened under the condition that the hair is not damaged, and the use experience of consumers is effectively improved.

The invention provides a blast furnace temperature anomaly prediction method based on digital twinning, and relates to the technical field of digital twinning, an adaptive diffusion coefficient is determined according to a tuyere convolute area image acquired in real time, an error caused by an unfixed value of the adaptive diffusion coefficient in the prior art can be avoided, and then the temperature anomaly of a blast furnace can be predicted based on the determined adaptive diffusion coefficient. According to the method, an energy conservation equation can be determined, a velocity field is solved according to real-time observation data corresponding to the tuyere convolution area image, a mass conservation equation and a momentum conservation equation, the velocity of the velocity field is input into the energy conservation equation corresponding to the tuyere convolution area image, the equation is solved by adopting a finite difference method, and a temperature field is obtained. According to the method, the temperature field characteristics of the temperature field are extracted, the temperature field characteristics are processed through the abnormal condition prediction model, the temperature label of the temperature field is obtained, and experimental results show that blast furnace temperature anomaly prediction is improved, and the real-time performance is remarkably improved.

The invention discloses a system and a method for peak regulation of a bypass powder bin externally hung on a powder outlet pipe of a coal mill. A coal mill powder outlet pipe external bypass powder bin peak regulation system 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, is ingenious, simple and practical in structure, and is easy to transform and popularize.

The invention relates to a tuyere small sleeve and a blast furnace. The tuyere small sleeve comprises an inner sleeve and an outer sleeve, wherein the inner sleeve is provided with an air supply hole penetrating in the axial direction; the outer sleeve is arranged on the inner sleeve in a sleeving mode, the two axial ends of the outer sleeve and the inner sleeve are connected in a sealed mode, an annular installation cavity is defined by the inner sleeve and the outer sleeve, and the installation cavity is arranged on the outer side of the air supply hole in a sleeving mode; the reinforcing columns are arranged in the mounting cavity in the radial direction, a gap exists between every two adjacent reinforcing columns, and the two ends of each reinforcing column are connected with the outer wall of the inner sleeve and the inner wall of the outer sleeve respectively. Thus, the reinforcing columns can support the inner sleeve and the outer sleeve, the structural strength of the tuyere small sleeve is improved, the reinforcing columns can make contact with cooling liquid, the contact area of the tuyere small sleeve and the cooling liquid is increased, and therefore the heat exchange area is increased, abrasion and melting loss of the tuyere small sleeve caused by high temperature are reduced as much as possible, and the service life of the tuyere small sleeve is prolonged. Moreover, the tuyere small sleeve is simple in structure, convenient to form, low in cost and convenient for low-cost batch production.

The invention belongs to the technical field of blast furnace ironmaking, and particularly discloses a tuyere device for blowing coal gas, oxygen and pulverized coal, which comprises a tuyere body and a coal gas blowing pipe, a central channel is arranged in the tuyere body, an oxygen channel and an oxygen loop are arranged in the tuyere body, the oxygen channel is communicated with the oxygen loop, the oxygen loop is communicated with an annular through groove, and the annular through groove is communicated with the coal gas blowing pipe. An annular through groove is formed in the tuyere body, the annular through groove is communicated with the central channel, the tuyere body is provided with a concave spherical surface used for being in spherical fit with a coal gas blowing pipe, a coal powder gun used for spraying coal powder is inserted into the coal gas blowing pipe, and the coal powder spraying end of the coal powder gun extends to the position 20-50 mm in front of the annular through groove at the angle of 10-15 degrees. The problems that when a traditional tuyere device carries out injection operation, oxygen is not evenly distributed in a channel, so that the ironmaking efficiency is low, and a tuyere is damaged are solved. According to the invention, by arranging the oxygen annular channel and the annular through groove, oxygen can be uniformly distributed in a central channel in the tuyere, and is subjected to violent premixing and combustion reaction with high-temperature coal gas and pulverized coal before entering a blast furnace, so that high-efficiency production is realized.

The invention discloses a layered, zoned and differentiated CO2 injection system and method for a blast furnace, and belongs to the technical field of ferrous metallurgy low carbon. The system comprises a CO2 supply and distribution system, a tuyere area injection module, a furnace body middle-lower part injection module and a furnace body upper part injection module. And according to the temperature gradient and atmosphere layering characteristics in the blast furnace, a differential CO2 distribution proportion and a collaborative thermal compensation strategy are adopted. An oxygen-CH4 synergistic injection device is arranged in a tuyere area, and rapid conversion of CO2 is promoted by using a high-temperature strong reducing atmosphere; a biomass charcoal synergistic injection device and an angle-adjustable nozzle are arranged at the middle lower part of the furnace body, so that efficient gasification reaction is realized; and low-concentration CO2 mixed injection is adopted at the upper part of the furnace body, so that indirect reduction reaction is promoted. According to the invention, the CO2 conversion rate is 65-80%, the coke ratio is reduced by 15-25%, the consumption of CO2 per ton of iron is 260-90Nm < 3 >, the carbon emission is obviously reduced, and the ironmaking efficiency is improved.

The invention provides a multi-interlayer energy-saving hearth used on a gas stove. In the prior art, a single-layer gas control basin or a welded double-layer gas control basin is used for improving the detection thermal efficiency, but the thermal insulation performance is poor, more heat is lost, and the thermal efficiency is reduced. The multi-interlayer energy-saving hearth comprises an outer hearth and an inner hearth, the outer hearth is in a big-end-up round sleeve shape, the outer hearth is arranged outside a burner of the gas stove in a sleeving mode, the bottom face of the outer hearth is placed on the stove face of the gas stove to be in a closed state, an outer hearth boss is machined on the upper portion of the interior of the outer hearth, and a plurality of outer hearth air inlet holes are evenly distributed in the lower face of the outer hearth along the circumference; the appearance of the inner chamber is in a basin shape with an inner chamber hole in the center, the inner chamber is arranged in the outer chamber, the periphery of the inner chamber is placed on the outer chamber boss, the inner chamber hole is close to the burner and is flanged upwards, and a gap between the inner chamber hole and the burner is used as an outer air supplement port for secondary air; and the pot rack consists of a pot rack ring and a plurality of pot rack legs and is arranged on the upper edge of the outer chamber. Through multi-aspect improvement, the thermal insulation performance and heat recovery are improved, the thermal efficiency is higher than that of various existing gas stoves, and the gas stove is easy to detach and wash.

The invention relates to the technical field of ceramic product production and manufacturing equipment and a preparation process, in particular to a spray granulation process which comprises the following steps: preparing zirconium oxide slurry with the solid content of 90%, conveying the zirconium oxide slurry to a nozzle through a pipeline, and enabling the slurry to meet airflow at the nozzle and be atomized into tiny liquid drops; atomized liquid drops make contact with hot airflow for drying, the airflow temperature is controlled by a temperature control system to gradually rise from the inlet section to the outlet section of the main tower, and an airflow system adjusts the airflow speed and the airflow direction; the particles with the particle size larger than or equal to 40 micrometers fall to a discharging port in the bottom of the main tower under the action of strong airflow, and the particle size is lt; particles with the particle size of 40 microns flow to a brown air opening under the action of relatively weak air flow; the dried large particles are guided out from a discharge hole in the bottom of the main tower through a strong airflow regulator to be collected, and the dried small particles are collected through a connecting pipeline and a cyclone separator through an air inlet; the large particles are directly stored or subsequently processed, and the small particles are further processed or sub-packaged. Precise classified collection is achieved, and the granulation quality and the production efficiency are improved.

The invention relates to a thermal management system, a control method and a vehicle. The tuyere lower enclosure structure is arranged below the tuyere upper enclosure structure at intervals, so that an air inlet is formed between the tuyere upper enclosure structure and the tuyere lower enclosure structure; the active air-inlet grille is connected between the tuyere upper surrounding structure and the tuyere lower surrounding structure, and the active air-inlet grille comprises rotatable blades; the tuyere lower surrounding structure comprises an air inlet front edge located in front of the active air inlet grille. On the section perpendicular to the width direction of the vehicle, the air inlet front edge comprises an arc-shaped section, the arc-shaped section gradually rises from front to back, and an included angle alpha is formed between the blades and the advancing direction of the vehicle and is larger than or equal to 90 degrees and smaller than or equal to 175 degrees. According to the heat management system, under the synergistic effect of arc-shaped design of the air inlet front edge and control over the included angle between the blades and the advancing direction of the vehicle, the air inlet efficiency of the air inlet is improved, the heat interaction efficiency between the vehicle and the environment is improved, and then the heat dissipation capacity of the vehicle in the high-temperature environment is improved.

The invention belongs to the technical field of atmospheric pollution, and particularly relates to dust removal equipment for a mining machine, the dust removal equipment comprises a base, a cyclone separator and a bag-type dust remover which are communicated with each other are fixedly mounted at the upper end of the base, an air inlet of the cyclone separator is further fixedly communicated with an induced draft pipe, an induced draft fan is mounted on the induced draft pipe, and the bag-type dust remover is fixedly connected with the air inlet of the cyclone separator. The induced draft fan is fixedly installed at the upper end of the base, the front end of the induced draft pipe is further fixedly communicated with a dust hood through an elastic telescopic pipe, and the device further comprises a PLC, a dusty gas state detection mechanism, a pre-spraying water conditioning mechanism, an air inlet speed self-regulation mechanism and a feedback regulation mechanism. The power and the ventilation quantity of the induced draft fan are automatically adjusted based on the dust concentration, water is pre-sprayed based on the dust water content, the inlet air speed of the cyclone separator is adjusted based on the ventilation quantity, and the input number of filter bags of the bag-type dust remover is adjusted. The comprehensive functions of efficiently capturing dust, preventing overflow, avoiding equipment blockage, guaranteeing stable operation of dust removal equipment and saving energy are achieved.

The invention discloses an experimental device and method for simulating the combustion rate of pulverized coal injected by a blast furnace, and belongs to the technical field of blast furnace ironmaking. The experimental device comprises a hot air generation unit, a pulverized coal injection unit, a fuel gas injection unit, a pulverized coal hot air combustion unit, a tail gas treatment unit and a data processing unit; simulated injection of combustion-supporting gas, carrier gas and fuel gas in the blast furnace injection pulverized coal combustion process can be achieved, simulation of the blast furnace injection pulverized coal combustion process is accurately achieved, and then the pulverized coal combustion rates under different combustion conditions are accurately obtained. According to the device and the method, process condition simulation under different blast furnace combustion operation environments can be met, the combustion behavior of blast furnace injection pulverized coal at the front end of a tuyere is accurately simulated, and the combustion rate of the pulverized coal under different combustion conditions is accurately measured; and a basis is provided for analyzing the influence of different process control parameters on the blast furnace pulverized coal injection combustion condition, and optimization and application of the blast furnace pulverized coal injection technology are promoted.

The invention discloses an airflow organization optimization design system and method based on a clean room tuyere, and relates to the technical field of clean room tuyere design, the system comprises a digital twin model construction module, a real-time data acquisition module, a problem identification module, a parameter simulation optimization module and a pre-debugging scheme output module; according to the method, the digital twin model of the clean room is constructed through computer-aided design and linked with real-time operation data, conversion of airflow organization optimization from static design to dynamic response is achieved, the problem that in the prior art, an optimization scheme is disjointed with an actual operation scene is solved, and by automatically recognizing problematic tuyeres and simulating and optimizing a parameter adjustment scheme, the optimization efficiency is improved. Traditional blind debugging depending on manual experience is replaced, repeated trial and error are avoided, the debugging accuracy and efficiency are improved, stable maintenance of cleanliness indexes of the clean room is guaranteed, meanwhile, the influence of the debugging process on the production progress is reduced, and powerful support is provided for efficient and reliable operation of the clean room.

The invention discloses a safe, rapid and environment-friendly blast furnace blowing-out method which comprises the following steps: 24 hours before blast furnace blowing-out and charge level lowering operation, adjusting fuel to be 20% higher than that of normal production fuel, lowering binary alkalinity of a slag system to be 1.0-1.05 times, and not adding a water gun; after the charge level lowering operation is started, the blast furnace keeps high oxygen enrichment blast smelting, and the oxygen enrichment rate is 15-20%; circulating decarburized coal gas is sprayed into a tuyere, the spraying amount of each ton of iron is 100-150m < 3 > / t, the theoretical combustion temperature of the tuyere is adjusted to be not higher than 2400 DEG C, the water pumping amount of the furnace top is reduced by 30%, and the top temperature is kept not higher than 350 DEG C in the water pumping operation of the furnace top; a pressure regulating valve group is kept in a normally open state during the charge level lowering operation, and the O2 content in the coal gas does not exceed 1%; and the oxygen enrichment rate is kept at 7-10% during the period, decarburized gas tuyere injection is stopped, the top temperature is kept not exceeding 400 DEG C until the tuyere blows through, and the furnace shutdown operation is completed.