64results about "Dust arresters" patented technology

The utility model discloses a blast furnace charging bucket gas recovery device which comprises a charging bucket, one side of the charging bucket is connected with a dust remover used for filtering gas through a pipeline, one side of the dust remover is connected with a high-pressure clean gas pipe network through a pressure equalizing pipe, and the surface of the high-pressure clean gas pipe network is connected with a low-pressure clean gas outer net through a first connecting pipe. The bottom of the high-pressure clean gas pipe network is connected with a first water tank, the bottom of the low-pressure clean gas outer network is connected with a second water tank, through connection between the multiple water tanks and the pipe network, it is ensured that gas can flow smoothly in the system, the problem of gas leakage is reduced, gas leakage is effectively prevented through the liquid seal principle of a U-shaped pipe, and the service life of the system is prolonged. And the joint of the bleeder and the second water tank is communicated with a low-pressure clean gas outer net through a third connecting pipe, and multiple pipelines work cooperatively, so that the gas can be fully collected and conveyed to a corresponding pipe network, and the gas recovery efficiency is remarkably improved.

The present invention presents a molten iron manufacturing apparatus and a molten iron manufacturing method applied thereto, the molten iron manufacturing apparatus comprising: a storage unit having an accommodation space capable of accommodating a powder raw material; a reduction unit capable of receiving the powder raw material and having a reduction space so as to reduce the powder raw material; and a transfer unit capable of transferring the powder raw material using a transfer gas and installed so as to supply, to the reduction unit, only the powder raw material among the transfer gas and the powder raw material, whereby process efficiency can be improved.

The utility model belongs to the technical field of ironmaking, and particularly discloses a protective device suitable for a molten iron trough of a blast furnace casting house, which comprises a cover head, a cover body and a cover tail, the cover body is formed by connecting a plurality of main frames end to end, each main frame comprises a frame top, frame waists and frame legs, the frame waists are welded on two sides of the frame top, and the frame waists are welded on two sides of the frame top. Frame legs are welded to the frame waists, a clamping groove is fixedly connected to the head end of the main frame, the head ends of the frame top, the frame waists and the frame legs are welded to the clamping groove, a clamping plate is fixedly connected to the tail end of the main frame, and the tail ends of the frame top, the frame waists and the frame legs are welded to the clamping plate. Modularized installation of the molten iron trough protective cover is achieved through the clamping groove and the clamping plate, the molten iron trough protective cover is higher than the ground, the observation window is formed, workers can conveniently observe the flowing condition of the main trough, the dust removal cover is connected to the tail end of the protective cover, and dust removal is more thorough.

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

The 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.

This invention provides an energy-saving blast furnace gas temperature regulation device, applied at the blast furnace gas outlet. It includes a gravity dust collector, a radiator, a dust collection bag, and a turbine. The gravity dust collector is connected at one end to the blast furnace gas outlet and at the other end to the radiator, used for preliminary removal of large particulate impurities from the blast furnace gas. The radiator is connected at one end to the gravity dust collector and at the other end to the dust collection bag, used to control the temperature of the blast furnace gas and prevent damage to the dust collection bag. The dust collection bag is connected at one end to the radiator and at the other end to the turbine, used to remove impurities from the blast furnace gas, completing the purification process. The turbine, connected to the dust collection bag, converts the pressure and thermal energy of the blast furnace gas into rotational mechanical energy to drive a generator. This invention effectively regulates the temperature of the blast furnace gas, simultaneously treating the gas and enabling its recycling.

The application discloses a kind of blast furnace top gas downcomer cleaning method and device, method includes the following steps: during blast furnace blowing-off, open the diffuser valve of blast furnace top and the valve on gravity dust collector, dry gas is passed into gas downcomer;Clean through hole is opened on communication pipe, communication pipe is communicated with gas downcomer;Close the valve on gravity dust collector, and stop dry gas into gas downcomer, and cleaning nozzle sprays high-pressure gas to the inner wall of gas downcomer and carries out blowing operation;Stop blowing operation, open the valve on gravity dust collector, and the adherent blown off from the inner wall of gas downcomer falls into gravity dust collector.In blowing operation before starting, the valve on gravity dust collector is closed, can avoid the adherent blown off by gravity dust collector and enter the bag system of blast furnace, when the valve on gravity dust collector is opened, the adherent accumulated in gas downcomer can fall into the bottom of gravity dust collector under the action of pressure and gravity.

The invention discloses a blast furnace ironmaking dust removal device and a working method, and belongs to the field of gas pollution treatment.The blast furnace ironmaking dust removal device comprises a shell, a partition plate fixed to the inner wall of the shell, a filter bag fixed to the lower end of the partition plate, an inlet and an outlet, the air supply unit is fixed on one side of the shell, the blowback assembly is located in the shell, the output end of the air supply unit is connected with the input end of the blowback assembly through a pipeline, and the blowback end of the blowback assembly extends into the filter bag; by adopting the design of combining the reverse blowing assembly and the reverse blowing capturing assembly, reverse blowing is carried out from the inside of the filter bag to the outside through the reverse blowing assembly, dust outside the filter bag is removed, meanwhile, negative pressure suction is carried out on the dust removed through reverse blowing through the reverse blowing capturing assembly, and the dust is forcibly taken away from the interior of the dust remover after being subjected to reverse blowing, so that not only is the dust removal efficiency higher, but also the dust removal effect is better. And high-concentration dust can be directly conveyed to a recovery device through an externally-hung negative pressure pipeline, so that the phenomena of long-term accumulation and bridging of the dust in the dust hopper are avoided.

The utility model relates to a novel dry dedusting bin pump, and relates to the technical field of blast furnace dedusting systems. The device comprises a bent pipe connected with a bin body ball valve, a steam pipe used for providing heat guarantee for the interior of the bent pipe is arranged in the bent pipe, the two ends of the steam pipe extend out of the bent pipe, and the steam pipe is communicated with a steam source used for continuously providing steam. The device has the effects that the blockage phenomenon of the ash conveying pipe is reduced, and the temperature of an easily-blocked area is controlled.

The application discloses a blast furnace iron notch dust removal system control method and device, electronic equipment and storage medium, including: when receiving the blow signal and drill rod driving signal, control the first dust removal machine to run at the first rotating speed, receive the temperature detected by the temperature sensor in each area, control the rotating speed of the first dust removal machine, the second dust removal machine and the third dust removal machine according to the temperature in each area, when receiving the iron notch blocking signal, control the first dust removal machine, the second dust removal machine and the third dust removal machine to stop running according to the temperature in each area, realize the determination of each stage and state of the blast furnace iron notch tapping through the temperature detected by the temperature sensor, control the first dust removal machine, the second dust removal machine and the third dust removal machine to run and stop running at different rotating speeds, can associate and control each stage, temperature and rotating speed of the dust removal machine in the tapping process, achieve the purpose of reducing the power consumption of the dust removal machine, and manual control of the dust removal machine is not needed, and the intelligent degree is improved.

The system comprises a blast furnace, a direct reduction area and an indirect reduction area, a gas outlet of the blast furnace is sequentially connected with a gas purifier, a separator and a combustor, a separated gas outlet of the separator is connected with a carbon dioxide storage tank, a heat exchange pipe is arranged in the combustor, and the heat exchange pipe is connected with the direct reduction area and the indirect reduction area. An oxygen storage tank, a water electrolysis device, a reactor and a pre-reducer are arranged on the outer side of the blast furnace, a gas outlet of the combustor, a gas outlet of the water electrolysis device and a gas outlet of the carbon dioxide storage tank are all communicated with a gas inlet of the reactor through pipelines, and the bottom of the pre-reducer is communicated with the top of the blast furnace. A gas outlet of the pre-reducer is communicated with a gas outlet of the blast furnace, the water electrolysis device is communicated with an inlet of the heat exchange pipe, and the smelting process comprises the steps of pre-reduction reaction, blast furnace iron making, carbon monoxide circulation, carbon dioxide circulation, slag iron discharging and the like. The method has the advantages of capability of realizing decarburization circulation of the blast furnace gas, small environmental pollution, energy conservation, consumption reduction, greenness and low carbon.

The utility model relates to the technical field of blast furnace dust removal, and discloses a dust removal device for a blast furnace, which comprises a dust remover main body and an air inlet box, an adjusting mechanism is arranged in the air inlet box, and a protection mechanism is arranged on the inner wall of the bottom of the air inlet box; the adjusting mechanism comprises an electric push rod, the bottom end of the electric push rod is fixedly connected to the inner wall of the bottom of the air inlet box, the driving end of the electric push rod is fixedly connected with a vertical rod, the front end of the vertical rod is fixedly connected with a plurality of square frames, and the inner wall of the air inlet box is rotationally connected with a plurality of rotating rods. And the outer part of the rotating rod is fixedly connected with a flow guide plate. According to the utility model, the electric push rod pushes the vertical rod and drives the square frame at the front end to ascend, and finally drives the flow guide plate to change the angle, so that the direction and the flow rate of airflow in the air inlet box are flexibly adjusted according to actual requirements, dust-containing gas enters the dust remover main body more uniformly and stably, and the dust removal efficiency is improved.

The utility model relates to the technical field of blast furnace top dust removal, and particularly provides a dust removal device for diffused flue gas of an iron-making blast furnace top charging bucket, which is characterized in that a driving motor is started, a connecting block is fixedly connected with the driving motor and rotates together with the driving motor, so that a connecting sleeve and a filter screen barrel are driven to rotate together with the connecting sleeve; due to the fact that the filter screen barrel continuously rotates and the air inlet is fixed, the filter face continuously changes positions, the purpose of flue gas dust removal is achieved, and the filter screen barrel is taken out of the connecting block, so that the filter screen barrel is convenient to disassemble, clean and replace, and the dust removal efficiency is improved.

The invention discloses an intelligent blast furnace dust removal system, and relates to the technical field of environmental protection equipment.The blast furnace dust removal system comprises a scrubber body and a gas inlet pipe, the side edge of the scrubber body is connected with the gas inlet pipe used for conveying dusty gas, the blast furnace dust removal system further comprises a washing unit, and the washing unit comprises a liquid conveying pipe; the side edge of the air inlet pipe is connected with a liquid conveying pipe, the end, located in the air inlet pipe, of the liquid conveying pipe is rotationally connected with a spraying pipe in a sealed mode, and a plurality of impellers are evenly arranged on the outer walls of the two ends of the spraying pipe in the circumferential direction of the spraying pipe. The dust-containing gas provides driving force for the impeller and the spraying pipe, so that the spraying pipe uniformly sprays the dust-containing gas; when dust-containing gas needs to be subjected to semi-fine dust removal treatment, the dust-containing gas in the gas inlet pipe blows the impeller to drive the spraying pipe to rotate, the washing liquid is sprayed into the gas inlet pipe through the spraying pipe, and the washing liquid is sprayed in all directions through the rotating spraying pipe, so that the spraying dust removal effect on the dust-containing gas is improved.

The utility model provides a blast furnace gas damping-down, reblowing and diffusing recovery processing system which comprises a first recovery pipeline, a second recovery pipeline and a third recovery pipeline. The two ends of the first recovery pipeline are connected with a blast furnace top and a high-pressure clean gas pipeline respectively; two ends of the second recovery pipeline are respectively connected with the blast furnace top and the low-pressure clean gas pipe network; the first dust remover group is arranged on the first recovery pipeline; the second dust remover group is arranged on the second recovery pipeline; the two ends of the collecting pipeline are connected with the first recycling pipeline and the second recycling pipeline respectively, the joint of the collecting pipeline and the first recycling pipeline is located at the downstream of the first dust remover set, the joint of the collecting pipeline and the second recycling pipeline is located at the downstream of the second dust remover set, and the collecting pipeline is provided with a first valve set which is opened when the blast furnace is in the blowing-down and reblowing process; and the at least one ejector is arranged on the first recovery pipeline and / or the second recovery pipeline and used for being started when the blast furnace stops and reblows. Gas and smoke entering the atmosphere in the blowing-down and reblowing process of the blast furnace are reduced to the maximum extent, pollution is reduced, and environment-friendly production is achieved.

The present application relates to the field of blast furnace ironmaking, and particularly relates to a blast furnace torpedo ladle iron flow guiding device and method, the tundish comprises a frame, a cover plate, a siphon pipe and a flow guide pipe, the top of the frame is provided with the cover plate, the number of the siphon pipes is two, and the siphon pipes are symmetrically arranged on the two sides of the cover plate, the upper end of each siphon pipe extends out of the cover plate and is connected with one end of a corresponding fan through a pipeline, the lower end of each siphon pipe extends into the frame through the cover plate, the bottom of the frame is provided with two through holes, each flow guide pipe passes through a through hole, the upper end of each flow guide pipe extends into a corresponding siphon pipe, and the lower end of each flow guide pipe extends out of the frame, and the torpedo ladle is located below the corresponding flow guide pipe. The present application has the advantages that: by arranging the vertical flow guide pipe at the bottom of the tundish, the molten iron is directly guided above the torpedo ladle opening, the problem of molten iron scattering caused by the parabolic form of the molten iron falling in the traditional tundish is avoided, and the accuracy of the molten iron guiding is significantly improved.

The invention relates to the technical field of metallurgical dust removal systems, in particular to a blast furnace gas dry dust removal self-circulation unconstrained filter bag ash removal system and a process thereof. The ash removal system comprises a blast furnace gas dry dust remover, a dust remover inlet branch pipe connected with an inlet of the dust remover, a dust remover inlet header pipe connected with the dust remover inlet branch pipe, a clean gas outlet pipeline connected with an outlet of the dust remover, and a dust remover gas outlet header pipe connected with the clean gas outlet pipeline. The ash removal system branch pipeline is connected with the dust remover barrel or the clean gas outlet pipeline, an energy self-circulation control mechanism, an ash removal system header pipe connected with the ash removal system branch pipeline, and an outer net gas pipeline connected with the ash removal system header pipe and the dust remover gas outlet header pipe are mounted on the ash removal system branch pipeline. Through self-circulation control of the potential energy and the quantity energy of the coal gas, flexible ash removal is realized, the ash film of the filter bag is kept complete, the ash removal is thorough, the ash removal time is short, the ash removal interval time is long, and the filter area of the dust remover is maximized.

The invention relates to the technical field of rock drill blowing atomization, in particular to an integrated blast furnace tapping machine rock drill blowing atomization device which comprises a filtering assembly arranged at the top of the outer surface of a drilling machine and an oil conveying assembly arranged at the top of the outer surface of the drilling machine. The filtering assembly comprises an atomizing nozzle, the outer surface of the atomizing nozzle is sleeved with a plurality of sealing rings, the top of the outer surface of the drilling machine is fixedly connected with a liquid box, one side of the outer surface of the liquid box is fixedly connected with a liquid extraction pump, a liquid feeding pipe is arranged in the liquid extraction pump, and a filtering plate is arranged in the liquid feeding pipe; a plurality of filtering holes are formed in the filtering plate, and a turbine plate is arranged in the liquid feeding pipe; the invention aims to solve the problems that impurities in a liquid feeding pipeline can directly enter a spray head, so that an atomization hole and a nozzle core are blocked; and the sealing ring depends on the wear resistance of the material of the sealing ring, so that the problem that compressed air leaks easily due to friction heating and aging acceleration between the sealing ring and the contact surface during operation is solved.

The utility model discloses an adjustable tuyere of a blast furnace, which belongs to the technical field of steel-making blast furnaces and comprises a steel-making blast furnace, a hearth, a furnace lining, a hot air pipe, an air supply outlet, a tuyere large sleeve, a tuyere medium sleeve and a tuyere small sleeve, the hearth is arranged in the steel-making blast furnace, the furnace lining is arranged in the inner wall of the steel-making blast furnace, and the tuyere large sleeve is mounted at the tuyere of the steel-making blast furnace through a support. A tuyere medium sleeve is installed on one side of the tuyere large sleeve through bolts, a tuyere small sleeve is installed on one side of the tuyere medium sleeve through bolts, a hot air pipe is arranged outside the steelmaking blast furnace, and the end of the hot air pipe is connected with an air supply outlet through a high-temperature-resistant hose. The adjusting mechanism is arranged, the electric cylinder, the air supply rubber ring, the high-temperature-resistant elastic connecting face and the heat insulation cover are used in cooperation, the size of the air outlet of the air port can be adjusted according to requirements, the air outlet amount is effectively controlled, and the steel making work has pertinence.

The invention relates to the technical field of metallurgical industry systems, in particular to a coke ore separation and dust removal system for a blast furnace ironmaking plant, which comprises an ore powder dust removal and collection system, a coke powder dust removal and collection system and a dust remover, the coke powder dedusting and collecting system is connected to an air inlet of an ash hopper of the deduster through a pipeline; and an outlet of the deduster is connected with an induced draft system, a mineral powder conveying system and a coke powder conveying system. The mineral powder conveying system and the coke powder conveying system are divided into two sets of independent systems and share one set of dust remover, dust removal box bodies can be reasonably distributed according to the air volume of the two sets of dust removal pipeline systems, optimal configuration of the whole set of dust remover is achieved, and centralized control over the whole set of dust removal system is facilitated; the investment cost and the operation and maintenance cost of dust removal system transformation are further saved; the mineral powder and the coke powder are independently recycled, so that the energy consumption of dust removal equipment during sintering and recycling of the fly ash can be reduced, and the utilization values of the mineral powder and the coke powder can be maximized.

The invention belongs to the technical field of blast furnace ironmaking, and particularly discloses a HyCROF blast furnace injection gas adjusting system which comprises a blast furnace and a PLC, the air inlet end of the blast furnace communicates with a tuyere small sleeve and communicates with a hot blast stove through the tuyere small sleeve, and a dust removal system and a decarburization system are connected to the blast furnace in series. A gas inlet valve, a filter, an outlet valve, a flow meter and a pressurizing machine are connected in series with an outlet of the decarburization system and the coke oven gas pipe, the pressurizing machine is communicated with the hot blast stove, and the flow meter is electrically connected with the PLC. In order to solve the problem of low reduction reaction efficiency in a furnace caused by oxygen-coal ratio imbalance due to gas composition and flow fluctuation in a traditional blast furnace ironmaking system, the method comprises the following steps: detecting the flow of decarburized gas and coke oven gas in real time, calculating the oxygen supply amount of theoretical mixed gas and adjusting the opening degree of an oxygen valve; therefore, the problems of low reduction reaction efficiency and high energy consumption in the furnace caused by deviation between the pressure, the flow and the components of the hot coal gas injected by the tuyere small sleeve and the actual demand quantity are solved.

This utility model discloses a blast furnace pulverized coal injection waste gas treatment device, relating to the field of waste gas treatment technology. It includes an inlet pipe, a connecting flange fixedly connected to one side of the outer surface of the inlet pipe, a regulating valve fixedly connected to one side of the connecting flange, a first connecting pipe fixedly connected to one end of the regulating valve, a high-temperature treatment component on one side of the first connecting pipe, a cooling component on one side of the inlet pipe, and a purification component on the side of the inlet pipe. This utility model, by setting up a high-temperature treatment component, allows the coarse grid plate installed in the pretreatment box to separate larger particle sizes in the waste gas. The separated large particle sizes enter the filter box where they are further filtered by ceramic fiber plates. Through the purification component, the filter bags in the waste gas intercept and filter the particulate matter, and finally, the activated carbon adsorption plate removes harmful gases and organic pollutants from the waste gas, improving the waste gas treatment effect.

The present application relates to the technical fields of blast furnace ironmaking, and discloses a blast furnace ironmaking slag flushing derived steam recycling device, which comprises: an air inlet assembly having an air inlet end and an air outlet end, the air inlet end being arranged above a blast furnace ironmaking slag flushing flow channel; an expansion assembly capable of expanding and buffering impact force when a large amount of steam flows into the air inlet assembly; a filtering assembly capable of collecting and uniformly discharging steam emitted from the air outlet end of the air inlet assembly to the next process; and a water supply assembly capable of filtering steam entering the filtering assembly. The blast furnace ironmaking slag flushing derived steam recycling device can reduce instantaneous steam impact force through a three-stage buffer mechanism of expansion film deformation buffer, counterweight frame and spring reverse force relief, air inlet flow self-adaptive adjustment, solve problems such as pipeline excitation, sealing leakage and structure deformation caused by pulse steam in traditional systems, prolong the continuous operation cycle of equipment, and reduce the risk of unplanned shutdown.

The present application provides a kind of top coal gas treatment system and method, a kind of blast furnace, comprising: by top coal gas supply pipeline to cooling tower and is supplied with top coal gas, and, by cooling water supply pipeline to cooling tower and is supplied with cooling water, cooling water and top coal gas contact after top coal gas heat exchange cooling;And, by softening water supply pipeline to cooling tower and is supplied with purified water, purified water is used to top coal gas after heat exchange cooling is purified;And, the top gas outlet of cooling tower is communicated with purified top coal gas downstream conveying pipeline, and the top coal gas that is treated by heat exchange cooling and purification is exported to outside.In cooling tower, cooling water and top coal gas can be directly contacted heat exchange cooling, softening water and top coal gas after heat exchange cooling can be directly contacted washing purification;Therefore, the present application can be in cooling tower and carry out two different purification top coal gas flow, equivalent to in the same set of device can simultaneously realize top coal gas cooling and dust removal.

The present application relates to dust removal environmental protection technical field, especially a kind of dry dust removal ash closed ash unloading system, and ash unloading device includes dry dust removal box, pressure scraper, centralized ash bin, filter small box, sensor group and valve group;Control platform includes: data acquisition module, for the data acquisition of sensor group;Material level monitoring module, for the data acquisition of data acquisition module, to monitor the material level in centralized ash bin;Ash cleaning module, for the data acquisition of data acquisition module, to obtain ash cleaning signal according to the pressure difference of filter small box, and ash cleaning module executes ash cleaning operation according to ash cleaning signal;Ash unloading module, for the data acquisition of data acquisition module and material level monitoring module, to analyze and obtain ash unloading signal, and ash unloading module executes ash unloading operation according to ash unloading operation signal.The present application solves the problems of poor sealing, insufficient safety, energy waste and material level detection error of traditional ash unloading device technology.

This utility model belongs to the field of blast furnace feeding technology, specifically a blast furnace feeding device for ironmaking, including a mixing box; a storage box; a feeding pipe, the two ends of which are respectively connected to the mixing box and the storage box. A discharge pipe is fixedly connected to the bottom of the feeding pipe, and an electrically controlled valve is connected to the flange at the end of the discharge pipe. A dust prevention mechanism includes: a water tank; a pump fixedly installed on the upper surface of the water tank, with a water guide pipe fixedly connected to the output end of the pump; and a first annular pipe connected to the water guide pipe. The pump draws water from the water tank and pumps it into the first annular pipe. The surface of the first annular pipe has a circumferential array of water outlet holes facing upwards. Since the first annular pipe is inside the second annular pipe, the water discharged through the outlet holes can splash onto the inner wall of the second annular pipe, thus dripping evenly downwards from the drainage trough to form an annular water curtain. When the material is discharged from the discharge pipe, the splashed dust particles can be captured by the water curtain, effectively preventing the diffusion of dust and particulate matter.

The utility model belongs to the technical field of tuyere peepholes, and particularly discloses a mechanism for inhibiting carbon deposition of a tuyere peephole of a hydrogen-carbon-rich blast furnace, which comprises a connecting pipe, a valve seat arranged on the connecting pipe, threads arranged at one end of the connecting pipe, a nut in threaded connection with the connecting pipe, and a lantern ring arranged on the inner side of the nut. A glass peeping sheet is placed between the connecting pipe and the lantern ring, a vertical pipe is communicated with the connecting pipe between the nut and the valve seat, a nitrogen pipe is communicated with the vertical pipe, and a valve is arranged on the nitrogen pipe. The problem that the labor intensity of a water watching worker is increased due to the fact that carbon powder blocks a tuyere peephole is solved. According to the utility model, generated carbon deposits are blown into the blast furnace through nitrogen purging, and the carbon deposits are prevented from blocking the peephole, so that the phenomenon that the peephole of the tuyere is frequently blocked by the carbon deposits of the peephole of the tuyere is avoided, and the labor intensity of the peephole of the tuyere is greatly reduced; meanwhile, gas leakage is reduced, so that the risk of gas poisoning caused by inspecting the hydraulic tuyere is reduced.

The invention discloses a control system and a control method for the safe oxygen content of a coal injection pulverized coal bunker, and relates to the field of pulverized coal pulverization and injection of an iron-making blast furnace. The method has the beneficial effects that the micro negative pressure state of the pulverized coal bunker is established and intelligently controlled, so that the suction of external air is substantially reduced from the source, the active preventive control of the oxygen content is realized, and the intrinsic safety level is remarkably improved. And residual nitrogen after pressure relief of the injection tank is used as a main purging gas source, and a siphon natural exhaust and dust remover variable-frequency regulation technology is supplemented, so that an energy-saving mode of treating waste with waste is constructed, the dependence on external nitrogen is reduced to the greatest extent, and the nitrogen consumption and the electric energy consumption are both reduced. In addition, negative pressure interference of upstream and downstream equipment can be effectively blocked, operation is stable and reliable, and remarkable economic benefits and environmental protection benefits are obtained while safety production is guaranteed.

The invention belongs to the technical field of low-carbon smelting, and particularly discloses a decarburization flash steam comprehensive utilization system and method.The decarburization flash steam comprehensive utilization system comprises a flash steam conveying pipeline communicated with a blast furnace nitrogen pipe network and a flash tank, and the flash steam conveying pipeline is communicated with pipelines of a plurality of blast furnace nitrogen users; a flash steam control valve group is arranged on the flash steam conveying pipeline, a nitrogen stop valve is arranged on the nitrogen pipe network for the blast furnace, a flash tank outlet pressure regulating valve is arranged at an outlet of the flash tank, a flash steam discharge stop valve is arranged on the flash steam conveying pipeline, and the flash steam control valve group and the nitrogen stop valve are both electrically connected with a blast furnace control system. According to the method, the effective components in the flash steam are combined, the nitrogen pipe network for the blast furnace and the blast furnace control system are utilized, the flash steam is recycled to the blast furnace top, the gas cloth bag and the gas heating furnace system to replace nitrogen in an original system, the effective components in the flash steam are recycled, the nitrogen entering a gas system is reduced, and the effective components of the gas are increased.

The utility model belongs to the technical field of blast furnace dust removal and collection equipment, and particularly relates to blast furnace dust removal and collection equipment which comprises a bottom plate, a dust remover is mounted at one end of the bottom plate, and a filter plate is mounted in the dust remover; a screw rod is rotatably arranged at one end of the dust remover in a penetrating manner, and a screw rod-screw nut pair is connected with a scraper plate; the scraping end of the scraping plate is attached to the surface of the filter plate; a first box body is arranged at the middle end of the bottom plate, and the interior of the top end of the first box body is connected with a dust remover through a smoke inlet pipe; cooling liquid is poured into the first box body, so that the purpose of cooling a high-temperature part in flue gas treated by the dust remover is achieved, the temperature of the flue gas is reduced, high-temperature pressure borne by a filter plate at the front end of the filter plate is reduced, meanwhile, a lead screw is driven by a servo motor to rotate, and a scraper is driven to move on the surface of the filter plate; impurities and particles attached to the filter plate are removed, so that smoothness of the filter plate is kept, and normal flow and dust removal efficiency of the dust remover are kept.