2089 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.

To provide a tuyere of a blast furnace and a blast furnace operation method using the tuyere, the tuyere being equipped with a pulverized coal blowing lance and a hydrogen-based reducing gas blowing lance, in which adhesion of pulverized coal to the inner surface of the tuyere is further suppressed and blockage can be prevented.SOLUTION: A tuyere of the blast furnace comprises a pulverized coal blowing lance for blowing pulverized coal into the tuyere and a hydrogen-based reducing gas blowing lance for blowing a hydrogen-based reducing gas into the tuyere. The tip of the pulverized coal blowing lance is located at a position 50 mm-100 mm from the tip of the tuyere, the tip of the hydrogen-based reducing gas blowing lance is located at a position 60 mm-120 mm from the tip of the tuyere, and the tip of the pulverized coal blowing lance is located further inside the furnace of the blast furnace than the tip of the hydrogen-based reducing gas blowing lance.SELECTED DRAWING: Figure 1

The invention discloses a method for smelting high-proportion sefstromite in an oxygen blast furnace, which comprises the following steps: pure oxygen injection is adopted in the blast furnace, pure oxygen, hot coal gas and pulverized coal are injected from a tuyere, an iron material and coke are added from the top of the furnace, the volume percentage of N2 in the top coal gas is less than 25%, and the top coal gas is recycled after CO2 is removed. By means of the method for smelting the high-proportion sefstromite through the oxygen blast furnace, smelting that the proportion of the sefstromite in the blast furnace is larger than 60%, the mass fraction of TiO2 in the blast furnace slag is larger than 15% and smaller than 45%, and CO2 emission is reduced by 30% or above can be achieved, and the problem that in existing blast furnace smelting, when the proportion of the sefstromite is increased, the cost is low is solved. The problems that slag is thick, slag and iron are difficult to separate, furnace conditions are unsmooth, cost is high, carbon emission is high and the like exist in the prior art, so that the utilization efficiency of vanadium-titanium resources is higher, and smelting cost and carbon emission are lower.

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 invention relates to the technical field of blast-furnace tuyere mud removing equipment, and particularly discloses blast-furnace tuyere sleeve mud poking equipment which comprises a rack, power wheels are arranged at the four corners of the bottom of the rack, a bracket is arranged above the rack, and an impactor is movably arranged at one end of the bracket; the impacter is driven by a thrust cylinder arranged on the bracket to move, one end of the impacter is connected with a drill rod, and the other end of the impacter is communicated with an air inlet pipe. The rack is remotely controlled to move to the right front of a blast-furnace tuyere, the tail end of a drill rod which is arranged in the blast-furnace tuyere in advance is inserted into a punching and drilling connector at one end of the impactor, the thrust air cylinder is controlled to drive the piston shaft to push the guide device to move, supporting force is provided for propelling of the impactor and the drill rod, and meanwhile high-pressure gas is introduced into the impactor through the gas inlet pipe; and the drill rod reciprocates at a high speed to impact blocking mud in the tuyere of the blast furnace, so that the blocking mud is quickly broken through, the working efficiency is improved, and safety accidents possibly caused by manual operation are avoided.

The utility model relates to a drying oven humidifying structure, which comprises a drying oven and a humidifying structure, the drying oven is provided with a drying cavity, the drying cavity comprises a plurality of upper tuyeres and lower tuyeres, the upper tuyeres and the lower tuyeres are arranged, the humidifying structure comprises humidifying nozzles, and the humidifying nozzles are positioned on the side edges of the upper tuyeres; an air outlet of the fan is connected with the humidifying nozzle through an air outlet pipeline, and an air inlet of the fan is connected to an exhaust pipe of the drying oven through an air inlet pipeline; the characteristic that the air humidity of the exhaust pipe of the drying oven is large is utilized, the steam pipeline is introduced to the fan, air at the air outlet is introduced to the side edge of the upper air nozzle in the drying oven through the fan, the humidity of air near the pole piece is increased, the drying speed is delayed, and therefore the cracking of the pole piece is reduced, and the quality of the pole piece is improved. And the pole piece drying yield is improved.

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.

Disclosed in the present invention is an operating method for the stable and smooth operation of a large blast furnace for high-titanium vanadium titano-magnetite, comprising: a distribution system: dividing a furnace throat into twelve annuluses of equal area in an matrix, such that the points of fall of ore are distributed from the 5th to 10th annuluses and the sum of the proportions of edge coke and central coke is within the range of 70-80%, forming a distribution matrix on the basis of various historical distribution data, setting an ore distribution angle on the basis of a stock line length, and controlling a blast furnace throat temperature to be 60-120℃; a blast system: under a normal production condition, using a symmetrical arrangement of two tuyeres of different areas and, under the condition of medium- and long-term abnormal production, adjusting the area of the tuyeres on the basis of a blast volume; and a slagging system and a heating system. The present invention solves the difficult problems, such as great difficulty in improving furnace charge smelting properties, great difficulty in adjusting intensified smelting operations, and great difficulty in recovering fluctuating furnace conditions, of large blast furnaces for high-titanium vanadium titano-magnetite, thereby achieving the long-term stable and smooth operation of the large blast furnaces for high-titanium vanadium titano-magnetite and maintaining the smooth highly-effective smelting operation thereof.

The invention discloses an adjustable tuyere camera, and relates to the technical field of tuyere cameras, the adjustable tuyere camera comprises a support body, a camera body and a lens, and further comprises a cleaning mechanism arranged at the output end of an electric push rod and used for wiping and cleaning the lens, the cleaning mechanism comprises a cleaning box, a driving assembly, a winding roller and an unwinding roller which are arranged on the side of the driving assembly, two winding drums which are respectively arranged on the winding roller and the unwinding roller through clamping assemblies, and cleaning cloth which is wound between the two winding drums. The cleaning cloth is driven to wipe the lens up and down, stubborn stains can be removed, the dust removal effect is better, the winding roller and the unwinding roller are driven by the driving assembly to rotate, the cleaning cloth roll is driven, the used cleaning cloth can be automatically replaced, the service life of the cleaning mechanism is prolonged, the workload of workers is reduced, and the cleaning efficiency is improved. The use is more convenient.

The invention relates to the technical field of sealing monitoring, and particularly discloses a tuyere small sleeve sealing monitoring method which specifically comprises the following steps: step 1, in a monitoring period, acquiring pressure data of a tuyere small sleeve at each monitoring time point, and analyzing to acquire an abnormal monitoring time point; 2, acquiring abnormal data of the abnormal monitoring time point based on the acquired abnormal monitoring time point, analyzing the abnormal data, and calculating a pressure abnormal evaluation value; wherein the abnormal data comprises an abnormal monitoring time point number proportion and an abnormal pressure deviation value degree ratio total value. Therefore, abnormity can be detected before the sealing performance is obviously reduced, measures can be taken as early as possible, problem deterioration is reduced, a pressure abnormity evaluation value is calculated based on abnormal data of an abnormal monitoring point, the sealing performance of the tuyere small sleeve can be quantitatively evaluated, maintenance personnel can know the sealing condition of the tuyere small sleeve more visually, and the maintenance efficiency is improved. And the production efficiency and the product quality are improved.

The utility model discloses a waste salt oxidation incinerator and a related disposal system. An oxidation reaction area, an air distribution area and a slag falling area are sequentially arranged in a furnace body of the waste salt oxidation incinerator in the direction from the top to the bottom. The oxidation reaction area is provided with a flue gas outlet, and the slag falling area is provided with a salt slag discharge port; a waste salt inlet is formed in the furnace body between the oxidation reaction area and the air distribution area; an air supply device is mounted in the air distribution area, an air supply opening, a material channel and a plurality of air outlets are formed in an air supply device body, the air outlets are distributed in the cross section of the air distribution area, and the air outlet direction of each air outlet faces the oxidation reaction area; and the material channel realizes communication between the oxidation reaction area and the slag falling area. The disposal system adopts the incinerator provided by the utility model. When the incinerator is used, waste salt particles enter the oxidation incinerator through pneumatic conveying, the waste salt particles are in a homogeneous suspension state in the incinerator, heat and mass transfer between the waste salt particles and high-temperature flue gas fed from the bottom of the incinerator is strong, the oxidation incineration speed of organic matter is high, and the organic matter is thoroughly removed.

The present invention discloses a method for injecting biomass fuel into a blast furnace, wherein the mixed fuel obtained by replacing part of the fossil fuel with biomass shaped fuel that has not been carbonized at high temperature is injected into the blast furnace from the tuyere of the blast furnace through an injection device to complete combustion and smelting reactions. The method of the present invention can reduce the use of fossil fuels, reduce carbon emissions and SO2 pollution without affecting smelting indicators. The implementation process does not require the introduction of carbonization equipment, eliminates the grinding and powder transportation process of pipeline fuel transportation, explosion-proof safety, and environmental protection links, saves a lot of investment and operating costs, has high safety and reliability, high economic utilization value, and can achieve economic and green smelting.

The invention discloses a CFD (computational fluid dynamics)-based coal mill primary air inlet guide plate structure optimization method which comprises the following steps: drawing five concentric circles of which the diameters are regularly and progressively decreased within the radius in the inner wall of a primary air chamber of a coal mill; the intersection points of the five circles and the auxiliary lines extend to the primary air port along the tangent line, so that the primary air guide plate is positioned, and the angle deflection arrangement is positioned; performing air chamber three-dimensional modeling according to the design drawing of the primary air guide plate and the traditional design drawing without the guide plate to form two groups of models for comparison; the flow guide plate structure has a better flow dividing and guiding effect on the primary air, and the primary air can enter the primary air chamber more orderly and evenly through the flow guide plate structure. The airflow velocity distribution of each nozzle of the model additionally provided with the rotational flow guide plate is more uniform than that of an element model, the higher airflow velocity means that the coal mill has higher pulverized coal conveying capacity, and meanwhile, the more uniform airflow distribution can effectively reduce the situation that each air ring blade and internal parts of the coal mill are abraded inconsistently.

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 invention relates to the technical field of blast furnace ironmaking, and discloses a blast furnace temperature targeted adjusting method and system based on a big data platform, and the method comprises the following steps: obtaining multiple groups of historical data in a blast furnace; training a preset neural network model by using the plurality of groups of historical data to obtain a furnace temperature prediction model; acquiring real-time measurement data of a plurality of preset parts of the blast furnace, and utilizing the furnace temperature prediction model to obtain a furnace temperature prediction value of each preset part; and the coal injection amount of each tuyere is adjusted according to the furnace temperature predicted value of each preset part, and targeted adjustment of the furnace temperature is achieved. According to the method, detailed historical data is acquired and analyzed, the furnace temperature prediction model is trained based on the historical data to realize furnace temperature prediction of each preset part of the cooling wall of the blast furnace, targeted adjustment of the furnace temperature is realized according to the prediction result, and the functions of revealing internal temperature distribution of the blast furnace, furnace temperature prediction and closed-loop adjustment are simply and efficiently realized.

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 discloses a structure for improving flutter stability of a flat box girder and a working method thereof, the structure comprises a box girder body and tuyeres located at the two ends of the box girder body in the transverse direction of a bridge, the tuyeres are connected with the box girder body through linear driving mechanisms, and the linear driving mechanisms are used for driving the tuyeres to move in the transverse direction of the bridge. The working method comprises the following steps: monitoring the actual wind speed of a bridge location in real time; if the actual wind speed is smaller than the set threshold value, the linear driving mechanism drives the tuyeres to contract inwards in the transverse direction of the bridge; and if the actual wind speed is larger than the set threshold value, the linear driving mechanism drives the tuyeres to stretch outwards in the transverse direction of the bridge. According to the structure for improving the flutter stability of the flat box girder and the working method of the structure, the problem that in the prior art, a flat box girder structure is difficult to achieve good balance between the flutter stability and the vortex vibration performance is solved, and the pneumatic configuration of the flat box girder is actively controlled; and development and application of the flat box girder technology are promoted.