730 results about "Tuyere" patented technology

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 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 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 relates to the technical field of high-temperature fine powder cooling and heat recovery, aims to solve the problem that an existing fine powder cooling method cannot give consideration to fine powder quenching effect, heat exchange efficiency, heat recovery value, device installation and abrasion, and provides a convection type quenching heat recovery method for high-temperature fine powder. The high-temperature fine powder is cooled and subjected to heat recovery through the high-temperature fine powder convection type quenching heat recovery device; comprising the steps that high-temperature fine powder enters a material bed from a feeding port, cooling air enters the material bed from the bottom, the side face and the middle of the material bed, and due to the inclined arrangement of the material bed, the airflow suspension dispersion effect of an air supply system and the effect of a conveying and stirring device, the fine powder gradually forms a material layer from the feeding port, moves to a discharging port and enters an air pipe; main hot air rises and is recovered through the heat recovery air opening, part of the hot air enters the air pipe, and the balance wall isolates heat recovery air from discharging air draft. The quenching heat exchange rate can be increased, the product quality is improved, the heat recovery efficiency is improved, and the cooling device is simple in installation mode and small in abrasion.

A production method of pig iron using a blast furnace with a tuyere includes: charging a first layer containing an iron ore material and a second layer containing coke alternately in the blast furnace; and reducing and melting the iron ore material in the charged first layer while injecting an auxiliary reductant into the blast furnace by hot air blown from the tuyere, in which: an aggregate for letting through the hot air to a central portion of the blast furnace is blended into the first layer; and the aggregate contains a reduced iron molded product obtained through compression molding of reduced iron.

The invention discloses a negative pressure collection and explosion-proof safety treatment system for metal dust in an electromagnet manufacturing process, which comprises a dust negative pressure collection unit, a ferromagnetic dust separation unit, a multi-stage filtration explosion-proof unit, a dust recovery unit and an intelligent control unit which are sequentially connected through corrosion-resistant metal pipelines, the dust negative-pressure collecting unit comprises a customized air suction cover, an embedded ground air suction opening and a movable negative-pressure dust suction gun; the ferromagnetic dust separation unit comprises an electromagnetic separation barrel, and a spiral flow guide channel is arranged in the barrel and is matched with a compressed air back flushing device; the multi-stage filtering explosion-proof unit comprises a first-stage cyclone separator and a second-stage HEPA efficient filter, an explosion-proof and explosion-proof layer is arranged on the outer side of the multi-stage filtering explosion-proof unit, and the multi-stage filtering explosion-proof unit is provided with a spark The intelligent control unit adopts a PLC control system, is connected with a dust concentration sensor, a temperature sensor and a pressure sensor, and supports remote monitoring and fault diagnosis. By means of the system, zero explosion risk, low emission and resource recycling of electromagnet manufacturing process dust are achieved.

The invention discloses an intelligent cooperative control system for mine breathing effect wind pressure adjustment and mining-following wind resistance. Comprising a mine multi-parameter intelligent feedback wind pressure regulation and control method, a roadway top cavity multi-channel wind flow regulation and control mechanism and a mining-following sliding closed wind shielding device. According to dynamic sensing of multi-source environmental parameters, including coal face air flow pressure, overlying goaf static pressure and overflow CO concentration, a breathing effect intensity index HBI is calculated, and based on the HBI and a pressure difference direction, linear mapping is conducted on the target opening degree of an openable and closable tuyere assembly, and a dynamic regulation and control instruction is generated; a regulation and control instruction acts on the roadway top cavity multi-channel airflow regulation and control mechanism, the mechanism integrates a direct flow channel, a Z-shaped airflow channel and a pressurization channel, and intelligent regulation of airflow distribution and ventilation pressure intensity is achieved. The mining-following sliding airtight wind shielding device comprises a sliding guide rail assembly, a reel type folding airtight structure and a double-layer flexible branch bin air bag airtight assembly and synchronously slides along with advancing of the working face, and dynamic airtight and isolation compensation of the goaf is achieved.

A blast furnace operation method according to the present invention is a blast furnace operation method of blowing oxygen gas and a reducing agent containing methane gas into a blast furnace from a tuyere of the blast furnace includes blowing preheating gas having an amount of carried heat greater than or equal to a predetermined amount of heat set in accordance with a blowing amount of the methane gas into the blast furnace from a gas blowing portion provided above the tuyere of the blast furnace in a case where an oxygen concentration in the oxygen gas is 80 vol% or more.

The utility model discloses a corona machine high-pressure gas filtering device, which relates to the technical field of filtering devices and comprises a corona back roller, a protective cover covers the outer side of the corona back roller, a high-pressure electrode is fixedly connected to the top end in the protective cover, a high-pressure tuyere is fixedly connected to one side of the protective cover, and the high-pressure tuyere is fixedly connected to the other side of the protective cover. A high-pressure air pump is fixedly connected to one side of the high-pressure air nozzle, a filter box is fixedly connected to one end of the high-pressure air pump, activated carbon, a nylon net and non-woven fabric are fixedly connected to the interior of the filter box, a metal filter net is installed on the front side of the filter box, a material receiving box is fixedly connected to the bottom of the front side of the filter box, and a cleaning plate is arranged on the rear side of a moving plate. According to the high-pressure gas filtering device of the corona machine, the cleaning plate moves and wipes on the surface of the metal filter screen, dust on the surface of the metal filter screen is cleaned, the dust is pushed to the discharging position, dust collection is facilitated, and meanwhile activated carbon, a nylon net and non-woven fabric can be detached and replaced conveniently.

1. Name of the design product: double tuyere air ring (rapid cooling). 2. Use of the design product: air ring for plastic, film machine, blown film machine, etc. 3. Design points of the design product: in shape. 4. Picture or photo that best indicates the design points: perspective view.

The invention relates to the technical field of hair dryers, and provides an air nozzle assembly of a hair dryer and the hair dryer. According to the embodiment of the invention, the tuyere assembly of the blower comprises a mounting seat and a rotary tuyere, the rotary tuyere is rotatably connected to the mounting seat, an air outlet of the rotary tuyere is eccentrically arranged relative to the mounting seat, and the air outlet of the rotary tuyere is suitable for rotating around a central shaft of the mounting seat under the condition that the rotary tuyere rotates. According to the tuyere assembly in the embodiment of the invention, the air outlet of the rotary tuyere can rotate around the central axis of the mounting base relative to the mounting base in the using process, the blowing area of the hair dryer is effectively enlarged, a wider area can be covered, and due to the fact that the blowing area is increased, a user can blow hair more quickly in the using process, time is saved, and the user experience is improved. The hair drying efficiency is improved.

The embodiment of the invention discloses a solid waste bottom slag waste heat utilization circulating fluidized bed boiler system which comprises a boiler body and an air-water slag cooler, the boiler body is provided with a discharge port and an air return port, the discharge port is used for discharging high-temperature bottom slag outwards, the air return port is used for conveying air into the boiler body, and the air-water slag cooler is used for cooling the air-water slag cooler. The air-water slag cooler comprises a shell and an economizer, the shell communicates with the discharge outlet so as to be used for receiving high-temperature bottom slag discharged from the boiler body, and the shell is provided with an air inlet so as to be used for conveying air into the shell; the economizer is arranged in the shell and used for recycling flue gas waste heat emitted by the high-temperature bottom slag and can convert air conveyed into the shell into hot air, and the hot air converted by the economizer can be circularly conveyed into the boiler body through the air return opening. According to the circulating fluidized bed boiler system utilizing the waste heat of the solid waste bottom slag, waste of heat energy is reduced by recycling the waste heat of the high-temperature bottom slag, and the overall heat efficiency of the boiler is improved.

The invention provides an application and a device of recycled silicon powder in polycrystalline silicon production in ferrosilicon smelting. High-purity fine silicon powder generated in the polycrystalline silicon production process is recycled and used for ferrosilicon smelting, resource utilization of industrial solid waste is achieved, and remarkable environmental protection and economic value is embodied. The high-purity silicon powder can be directly subjected to a solid-phase reduction reaction with iron oxide in furnace charge, so that the consumption of coke or other carbon sources is reduced, the emission of carbon dioxide is reduced, and the energy consumption required for reducing silica into silicon is also reduced. According to the scheme, complex impurity removal treatment is not needed, the silicon powder can participate in the reduction reaction through segmented blowing of the blast furnace tuyere, operation is easy and convenient, the source is stable, the quality uniformity of raw materials is guaranteed, and therefore the chemical component controllability and the smelting efficiency of silicon iron products are improved. The recycled silicon powder is small in particle size, large in specific surface area and high in reaction rate, the smelting time can be further shortened, and the overall production efficiency is improved.

To provide an operation method for a blast furnace capable of achieving a low reduction agent ratio and low pressure loss.SOLUTION: A blast furnace operation method comprises blowing hydrogen-based reduction gas into the interior of the blast furnace through ordinary tuyere, blowing reformer top circulation gas into the interior of the blast furnace through shaft part tuyere, where the furnace center is 0.0 and the furnace wall is 1.0, the region from the furnace center to a position where the dimensionless radius is 0.3 is defined as the central part, the region from the position where the dimensionless radius is 0.3 to the position where the dimensionless radius is r as the intermediate part, and the region from the position where the dimensionless radius is r to the position where the dimensionless radius is 1.0 as the furnace wall part, when r is set to be greater than 0.3 and less than 1.0, and where the control range is the uppermost layer of the ferrous raw material layer and the uppermost layer of the coke layer, and where the O / C index, which is the ratio of the O / C of the furnace wall part to the O / C of the intermediate part, is set to exceed 1.0 in the intermediate part and the furnace wall part of the control range.SELECTED DRAWING: Figure 1

The utility model discloses an electric furnace dust removal device, including the draft hood subassembly, its main point is: still including follow -up air pipe, adjusting mechanism and valve device. The draft hood subassembly includes the mounting seat and the draft hood, and the mounting seat fixedly arranged on the corresponding electric furnace body platform. The draft hood includes the upper cover portion and the air pipe connecting portion. The air pipe connecting portion rotationally arranged on the mounting seat, and the follow -up air pipe rotationally arranged on the mounting seat, and one end of follow -up air pipe communicates with the upper cover portion inside through the air pipe connecting portion, and the second suction air mouth of the other end of follow -up air pipe is overlapped and communicated on the air inlet of the smoke removal pipe of the dust removal system of the corresponding site, and the draft hood is driven to rotate through the adjusting mechanism.

A method for smelting high-proportion sefstromite by using an oxygen blast furnace. The method comprises the following steps: with pure oxygen blowing being used in a blast furnace, injecting pure oxygen, hot coal gas and pulverized coal from a tuyere, adding an iron charge and coke from the top of the furnace, wherein the volume percentage of N2 in coal gas at the top of the furnace is less than 25%, removing CO2 from the coal gas at the top of the furnace, and then recycling same. The method for smelting high-proportion sefstromite by using an oxygen blast furnace in the present invention can achieve such smelting that the proportion of sefstromite in the blast furnace is greater than 60%, the mass fraction of TiO2 in blast-furnace slag is greater than 15%, but smaller than 45%, and the emission of CO2 is reduced by 30% or more, and solves the problems of thick furnace slag, difficulties in slag-iron separation, blast wandering, high costs, high carbon emissions, etc., of conventional blast furnace smelting in the case of an increase in the proportion of sefstromite, thereby achieving higher utilization efficiency of vanadium-titanium resources, lower smelting costs and lower carbon emissions.

The utility model provides a device for preventing a blast furnace tuyere blowpipe from sinking. The device for preventing the blast furnace tuyere blowpipe from sinking comprises a tuyere large sleeve, a tuyere medium sleeve, a tuyere small sleeve, a supporting boss, a mounting plate and a moving assembly, the tuyere medium sleeve is arranged at the rear end of the tuyere large sleeve, the tuyere small sleeve is arranged at the rear end of the tuyere medium sleeve, the supporting boss is arranged in the tuyere small sleeve, and the mounting plate is arranged in the tuyere small sleeve. The outer diameter of the supporting boss is matched with the inner diameter of the small tuyere sleeve, and the inner diameter of the supporting boss is matched with the outer diameter of a tuyere blowpipe. According to the device for preventing the blast furnace tuyere blowpipe from sinking, the tuyere blowpipe is not easy to sink when the blast furnace is in damping down due to the arrangement of each structure, so that the maintenance and repair period of workers on the blast furnace is prolonged, and the cost of the workers is reduced.

The invention relates to a microchannel single-cavity tuyere small sleeve and a blast furnace comprising the microchannel single-cavity tuyere small sleeve, the microchannel single-cavity tuyere small sleeve comprises a small sleeve body, the small sleeve body is provided with a heat exchange cavity and a cooling cavity located on the periphery of the heat exchange cavity, and the heat exchange cavity penetrates through the small sleeve body in the length direction; the cooling cavity comprises a first cavity body and a second cavity body which are distributed in the length direction. The partition plate is arranged in the second cavity and surrounds the heat exchange cavity so as to divide the second cavity into a third cavity and a fourth cavity surrounding the radial outer side of the third cavity, and the sides, away from the first cavity, of the third cavity and the fourth cavity communicate with each other; and the at least one first cooling liquid pipe is arranged in the first cavity, the first end of the first cooling liquid pipe communicates with one of the third cavity and the fourth cavity, and the second end of the first cooling liquid pipe penetrates out of the side wall, away from the second cavity, of the first cavity. The temperature of the micro-channel single-cavity tuyere small sleeve is reduced, and damage caused by too high temperature is avoided.

The application discloses a system and method for blending biomass and ammonia gas in a pulverized coal furnace, and belongs to the technical field of fuel combustion. The boiler combustion area is divided into a stable combustion zone, a main combustion zone, a reduction zone I, a burnout zone I, a reduction zone II and a burnout zone II. The stable combustion zone is provided with a biomass burner and a pulverized coal burner, the main combustion zone is provided with a biomass burner, a pulverized coal burner and an ammonia gas burner, the reduction zone I and the reduction zone II are arranged with ammonia gas burners, and the burnout zone I and the burnout zone II are arranged with burnout air ports, which is conducive to the stable blending combustion of pulverized coal, biomass and ammonia gas and reduces the emission of nitrogen oxides. The application improves the combustion stability and relieves the problems of ash deposition, slagging and corrosion through biomass pretreatment such as secondary crushing, water washing and drying. The application uses the heat of high-temperature flue gas for liquid ammonia gasification and biomass drying, thereby improving the energy utilization rate.

The operation method of a blast furnace improves the ventilation of the lower part of the blast furnace by tuyere injection of fine ore. The operation method of the blast furnace (1) of the invention is characterized in that coal is pulverized as fine coal, and an iron ore having a pulverized ignition loss of 9 mass% or more and 12 mass% or less is pulverized as fine ore, the injection rate of the fine coal is 150 kg / tp or more, the injection rate of the fine ore is 2.5 kg / tp or more and 50.0 kg / tp or less, and the fine coal and the fine ore are injected from the tuyere (2). It is preferable that the iron ore and the coal are pulverized together.

The invention relates to an ironmaking method wherein two gases (13,14) are injected into a blast furnace at a single level, said injection being done at the tuyere level of the blast furnace and comprises the injection of an O2-rich gas (13) comprising more than 95% in volume of O2 and of an H2-rich gas (14) comprising more than 95% of H2, without any injection of other reductant at the tuyere level.

A method for purifying smoke source in tunnel excavation process relates to the field of tunnel engineering air purification, comprising a device box, a negative pressure return air inlet, a pressure fan, a static pressure box, a smoke treatment device, a harmful gas purification device and a high-pressure air curtain system are fixed in the device box, the high-pressure clean air jet formed by the air outlet is sprayed to the drilling and blasting operation face, the high-concentration smoke-carrying air area is targeted, quickly diluted and strongly disturbed, the smoke-carrying air is passively returned to the negative pressure return air inlet grid area on both sides of the device box, the smoke particles are intercepted and purified by the smoke treatment device, the harmful gas is purified by the harmful gas treatment device, and the purified air is pressurized and sprayed by the pressure fan to complete the circulation of the smoke-carrying air on the face; the airflow organization formed by the method has good disturbance effect on the air retention on the face, has good smoke and dust removal effect in a large space or range, and is also suitable for relatively closed space.

The utility model discloses a dismounting and mounting device for quickly dismounting and mounting middle and small sleeves of a blast furnace tuyere, which comprises a traveling vehicle body, a hydraulic-pneumatic hammer, a translation hydraulic cylinder and a tilting hydraulic cylinder, the hydraulic-pneumatic hammer, the translation hydraulic cylinder and the tilting hydraulic cylinder are assembled on the vehicle body, an anchor hook is assembled at the hammerhead end of the hydraulic-pneumatic hammer, a sliding seat is arranged between the hydraulic-pneumatic hammer and the vehicle body, and one end of the hydraulic-pneumatic hammer is rotatably connected with the sliding seat. The other end of the hydraulic-pneumatic hammer is rotationally connected with the other end of the sliding seat through a tilting hydraulic cylinder so as to drive the hydraulic-pneumatic hammer to tilt up and down and adjust the extension angle of the anchor hook, and the anchor hook extends and retracts by driving the sliding seat to advance and retreat, and the hook part is driven to hook the front end of a small sleeve in a tuyere or abut against the rear end of the small sleeve in the tuyere in a matched manner; therefore, the middle sleeve and the small sleeve of the tuyere can be quickly disassembled and assembled, the damping-down time of a blast furnace is shortened, the labor intensity of workers is effectively reduced, and the production efficiency is improved. The anchor hook can be used for correspondingly pulling out or propping against the middle sleeve and the small sleeve of the tuyere and synchronously driving the hook part to hit the front end or the rear end of the middle sleeve and the small sleeve of the tuyere.

The invention discloses a coke blast furnace with a moisture compensation function, and relates to the technical field of coke blast furnaces, the coke blast furnace comprises a hopper, the bottom of the hopper is fixedly connected with the top of a furnace shell, and an anti-precipitation structure, a filtering structure and a cleaning structure are arranged in the furnace shell; the coke blast furnace with the moisture compensation function comprises a filter structure and an anti-precipitation structure, the anti-precipitation structure comprises a thermal expansion frame, a heat conduction sheet, a piston plate and a driven part, and the surface of the piston plate is slidably connected with the inner wall of the thermal expansion frame. Carbon ash and carbon monoxide generated after the coke is strongly combusted can rise under hot air flow in the blast furnace, at the moment, the filter plate in the tuyere area of the blast furnace can filter the carbon ash, active adsorption cotton in the filter plate can adsorb the carbon monoxide, and therefore it is guaranteed that exhausted gas does not contain substances harmful to the human body, and the service life of the blast furnace is prolonged. Therefore, the personal safety of workers is ensured.

The utility model relates to an electric heating reaction furnace with a collecting device, which comprises an electric heating furnace, the collecting device is arranged on the right side of the electric heating furnace, the collecting device is used for collecting materials discharged from an outlet of the electric heating furnace, the collecting device comprises a fixed support and an inclined square tube, and the left end of the square tube is communicated with the outlet of the electric heating furnace. A plurality of tuyeres are arranged on the front side of the square pipe at equal intervals from left to right, the rear ends of the tuyeres communicate with the interior of the square pipe, the multiple tuyeres communicate with the same air inlet pipeline, a guide plate is arranged on the right front side of the interior of the square pipe, the left side of the guide plate is rotationally connected with the inner wall of the square pipe, and a push-pull rod is fixedly installed on the front side of the right end of the guide plate. The front end of the push-pull rod penetrates through the square pipe and extends to the outer side of the square pipe, and the air inlet pipeline sprays air flow into the square pipe from the multiple nozzles at a high speed, so that materials heated by the electric heating furnace can more quickly pass through the square pipe and enter a punching machine required by the next process.

The invention discloses an air pipe system and an installation method, the air pipe system comprises an air port and a plurality of air pipes, the plurality of air pipes are staggered and communicated to form an air pipe network, a plurality of air pipe supports are installed on the air pipe network, and the air pipe supports are hung on a floor through hanging brackets. The installation method comprises the following steps that firstly, the working platform is installed; 2, manufacturing an air pipe support and a hanging bracket; thirdly, a hanging bracket is installed; step 4, pre-assembling the transverse air pipe; 5, pre-assembling the vertical air pipe; sixthly, a transverse air pipe is hoisted; seventhly, a hose is installed; eighthly, a static pressure box is installed; ninthly, the tuyere is installed; tenthly, an air volume adjusting valve and an air diffuser are installed; eleventhly, air pipe leakproofness testing is carried out; 12, air pipe heat preservation; and step 13, detecting the elevation and flatness of the air duct system. The invention provides a set of standardized and precise air duct system construction scheme.