113results about "Dust arresters" patented technology

The invention provides ironmaking blast furnace gas flow conveying equipment which comprises a blast furnace body, the top of the blast furnace body is provided with a furnace top feeding port and a sealing top cover, a material distribution chute extending into the blast furnace body is rotationally installed on the sealing top cover, and a material preheating bin fixedly sleeves the bottom of the outer side wall of the material distribution chute; the preheating gas pipe penetrates through an inner cavity of the material preheating bin to form a forced channel; when flowing through the inner cavity of the material preheating bin, the blast furnace gas containing waste heat conveyed by the preheating gas pipe is forced to pass through the coke and / or iron ore material layer accumulated in the material preheating bin, and meanwhile, part of the gas is uniformly and dispersedly discharged through the gas distribution micropores in the preheating flashboard. In the coal gas conveying period, when coal gas flows into the material preheating bin and flows into the preheating coal gas pipe, materials falling into the material preheating bin are preheated through waste heat in the coal gas, the contact area of the coal gas and the materials is greatly increased, the preheating effect is improved, subsequent reduction of iron ore is facilitated, and the iron making efficiency is improved.

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 utility model belongs to the field of blast furnace equipment, and relates to a blast furnace gas heating system which comprises a valve of a blast furnace gas pipeline, a cyclone dust collector, a flowmeter, a thermometer, a valve of a flue gas pipeline and a heat exchanger, and a heating gas source is taken from flue gas of a hot blast stove. The system is arranged between a blast furnace gravity dust collector and dry dust collection and serves as a bypass of a normal gas pipeline. When the blast furnace gas is low in temperature and needs to be heated, the flue gas adjusting valve on the hot blast stove flue gas pipeline is opened, high-temperature hot blast stove flue gas enters the heat exchanger, meanwhile, the gas adjusting valve on the heating system pipeline is opened, and the blast furnace gas flows through the heated heat exchanger after passing through the cyclone dust collector, so that the blast furnace gas is heated and then flows to the dry dedusting system. Heated hot-blast stove smoke flows back to the hot-blast stove waste gas pipeline and is discharged through a chimney. Blast furnace gas is heated through hot blast stove flue gas, low-temperature gas is prevented from directly entering a dry-method system, cloth bag hardening is prevented, normal work of the dry-method system is ensured, and the operation stability of a blast furnace system is improved.

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 utility model relates to the technical field of gas recovery, and provides a blast furnace damping-down diffused gas recovery device which comprises a dust removal box, a partition plate, a filter screen, a reverse blowing valve, an exhaust fan and a dust removal cloth bag, the partition plate is arranged in the dust removal box, and the interior of the dust removal box is divided into at least two cavities by means of the partition plate; the filter screen is arranged in the dust removal box, and each cavity of the dust removal box is divided into an air inlet cavity and an air outlet cavity by virtue of the filter screen; each air outlet cavity of the dust removal box is communicated with a blowback valve, and the blowback valves are positioned outside the dust removal box; each air inlet cavity of the dust removal box communicates with an exhaust fan, and the exhaust fans are located outside the dust removal box. The dedusting cloth bag is located outside the dedusting box, and the outlet end of the exhaust fan is communicated with the dedusting cloth bag. By means of the technical scheme, the problems that in the related technology, the filter screen of the recovery device is generally detached after shutdown and then installed for continuous use after being cleaned, time and labor are wasted, and the recovery efficiency can be affected are solved.

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 invention discloses a blast furnace gas dry method bag type dust collector front temperature adjusting system and method, and the system comprises a gravity dust collector which is connected with a blast furnace through a blast furnace raw gas pipeline, and a gas outlet pipeline of the gravity dust collector is provided with a first four-way assembly and a second four-way assembly; a first air outlet of the first four-way assembly is connected with the cooling heat exchanger through a cooling heat exchanger air inlet pipeline, a second air outlet of the first four-way assembly is connected with the heating heat exchanger through a heating heat exchanger air inlet pipeline, and a third air outlet of the first four-way assembly is connected with a first air inlet of the second four-way assembly through a medium-temperature pipeline. A second air inlet of the second four-way assembly is connected with a cooling heat exchanger air outlet pipeline, a third air inlet of the second four-way assembly is connected with a heating heat exchanger air outlet pipeline, and an air outlet of the second four-way assembly is connected with a dry bag type dust collector air inlet pipeline; a first thermodetector is arranged on the blast furnace raw gas pipeline, and a second thermodetector is arranged on a gas outlet pipeline of the gravity dust collector; and a first regulating valve, a second regulating valve and a third regulating valve are respectively arranged on the cooling heat exchanger air inlet pipeline, the medium-temperature pipeline and the heating heat exchanger air inlet pipeline.

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 utility model discloses a furnace top gas recovery dedusting noise reduction device for blast furnace ironmaking, which comprises a device body, a rope, a first filter screen layer, moving wheels, an external pipe and a third filter screen layer, the left side of the device body is connected with a gas inlet pipe, the right side of the device body is connected with a gas outlet pipe, the first filter screen layer is arranged in the device body, and the second filter screen layer is arranged in the device body. A first filter screen layer is arranged in the device body, a second filter screen layer is arranged in the device body, the second filter screen layer is arranged on the right side of the first filter screen layer, a collecting box is arranged in the device body in a penetrating mode, and the collecting box is arranged below the second filter screen layer. According to the furnace top gas recovery, dust removal and noise reduction device for blast furnace ironmaking, gas enters the device body, dust in the gas can be filtered through the first filter screen layer and the second filter screen layer, the rope drives the swing ball to impact the first filter screen and the second filter screen under the action of the gas, the filtered dust slides down, and the permeability of the filtered dust is kept; water is sprayed under the action of a liquid conveying pump and a spraying pipe to perform wet dust removal on gas, and the dust removal effect is improved.

The invention discloses a blast furnace system and a control method thereof. The blast furnace system comprises a blast furnace; the dust removal cover covers the blast furnace, and a dust removal pipeline is connected to the dust removal cover; the water slag flushing white elimination cover is connected with the dust removal pipeline through a steam pipeline, and a steam valve is arranged on the steam pipeline; an inlet of the dust removal assembly is connected with the dust removal cover through a dust removal pipeline, an outlet of the dust removal assembly is connected with an exhaust pipeline, and a dust detection device and a dust removal fan are arranged on the exhaust pipeline; an inlet of the dust removal chimney is connected with the exhaust pipeline; the hot-blast stove is connected with the blast furnace through a hot-blast pipeline, and a combustion-supporting air port of the hot-blast stove is connected with an air outlet of the dedusting chimney through a combustion-supporting air pipeline; the combustion-supporting fan is arranged on the combustion-supporting air pipeline; and the controller is electrically connected with the dust detection device and the steam valve, and the controller is configured to control the opening degree of the steam valve according to the dust content. The heat energy utilization rate is greatly improved and the energy consumption of the whole blast furnace system is reduced.

The invention belongs to the technical field of blast furnace smelting, and relates to a blast furnace top dust collecting system which comprises a receiving hopper, a sealing structure and a single dust remover. The sealing structure comprises a modularized frame, a sealing panel, a gap sealing piece and a skip car channel, the modularized frame is installed at the top of the receiving hopper, the modularized frame is covered with the sealing panel, a buffer layer is arranged on the inner side of the sealing panel, and the gap sealing piece is arranged in a gap between the modularized frame and the sealing panel; a skip car channel is arranged at the bottom of the receiving hopper, and a soft curtain or an automatic door system is arranged at an opening of the skip car channel. And the receiving hopper is connected to a single dust remover through a dust removal pipeline. The invention further relates to a blast furnace top dust collecting method. Through the collaborative design of the sealing structure and the single dust remover, the dust collecting efficiency can reach 99% or above, no dust overflows visually, and the working environment is greatly improved.

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 discloses a blast furnace coal injection system capable of preventing material blockage, which comprises an injection tank, a filter and a coal injection distributor, wherein the discharge port end of the coal injection distributor is connected with a coal injection gun through each branch coal injection duct; the injection tank is connected with the filter through a first pipeline, and the filter is connected with the coal injection distributor through a second pipeline; a first three-way valve is arranged on the second pipeline, one end of the first three-way valve is connected with a blowback pipeline, and the blowback pipeline is connected with an air source; a second three-way valve is arranged on the first pipeline, and one end of the second three-way valve is connected with a collecting bag through a collecting pipeline. The utility model has the characteristics of automatic cleaning, low possibility of blockage, safety and reliability.

The invention belongs to the technical field of gas heating furnaces, and particularly discloses a system and method for recovering gas in a banking period of a gas heating furnace based on a hydrogen-rich carbon circulating oxygen blast furnace. The system comprises the gas heating furnace and a chimney, the gas heating furnace is communicated with a flue and a furnace burning gas pipe, the flue is communicated with the chimney, and a flue valve is arranged on the flue; the flue is communicated with a connecting pipe, the connecting pipe is provided with a stop valve, the connecting pipe is communicated with a recovery pipe, the recovery pipe is provided with a recovery valve, one end of the recovery pipe is communicated with a purification buffer tank, the outlet end of the purification buffer tank is communicated with a gas pipe, the gas pipe is communicated with a burning furnace gas pipe, and one end, close to an inlet of the purification buffer tank, of the recovery pipe is provided with a first pressure regulating valve; and a second pressure regulating valve is arranged on the gas pipe. The problem that when the gas heating furnace is switched to the banking state, energy waste and environment pollution are caused is solved. The high-pressure hydrogen-rich gas in the banking state is recycled to the furnace burning gas pipe for cyclic utilization, energy waste is reduced, and closed-loop utilization of energy is achieved.

The invention discloses furnace top noise reduction and dust removal equipment of a blast furnace, and relates to the technical field of flue gas dust removal. Due to the fact that the temperature of flue gas guided out of the blast furnace is high, when the flue gas is directly subjected to dust removal treatment without being cooled, heat of the flue gas is transmitted to a dust removal filter part in the filtering process, the filter part is damaged, and the dust removal effect on the flue gas is affected. When high-temperature flue gas flows through, the flue gas is in contact with the inner cavity block and the outer cover bin, so that heat of the flue gas is transferred to cooling water through the inner cavity block and the outer cover bin during contact, the temperature of the flue gas is reduced, and the situation that a filtering piece is damaged by the high-temperature flue gas during dust removal is avoided; and meanwhile, the area of the outer cover bin and the inner cavity block in contact with the flue gas is increased, and the cooling effect is improved.

The utility model relates to the technical field of blast furnace dust removal, and discloses a blast furnace dust removal device, which comprises a dust removal box, a dust collection box and a dust collection box, the spraying mechanism is located in the dust removal box, the spraying mechanism comprises a spraying plate, a water supply assembly, an anti-bubble assembly and a collecting assembly which are installed in the dust removal box, a plurality of evenly-distributed spraying pipes are installed at the bottom of the spraying plate, and a guide plate corresponding to the spraying plate is fixed to one side of the top of the dust collection cotton; through the arrangement of the spraying mechanism, flue gas can be sprayed and cleaned in the heat conduction process, so that suspended particles in the flue gas can be effectively separated, the air quality is improved, the situation of harming the environment and human health is avoided, and the dust removal efficiency of the device is improved; the problems that in an existing device, particulate matter which is not captured can be attached to the inner wall of the dust removal box, and abrasion and corrosion of equipment are increased are solved, the service life of the equipment is greatly prolonged, and the operation cost is reduced.

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 present application belongs to the technical field of metallurgy-iron smelting, and discloses a blast furnace iron smelting equipment and a blast furnace iron smelting process capable of realizing low-carbon smelting and recycling of carbon. The blast furnace iron smelting equipment comprises a blast furnace body, a dust removal system, a heating and pressurizing system, a waste heat utilization and cooling system, and a carbon dioxide separation and treatment system. The flue gas flowing out of the gas outlet of the blast furnace body is dusted by the dust removal system, and then a part of the flue gas is cooled by the waste heat utilization and cooling system and then enters the carbon dioxide separation and treatment system, so as to separate the coal gas and carbon dioxide in the cooled flue gas, and make the separated coal gas enter the heating and pressurizing system, and the separated carbon dioxide is heated by the waste heat utilization and cooling system and then enters the heating and pressurizing system. Another part of the flue gas after being dusted by the dust removal system is used for the operation of the heating and pressurizing system, so as to heat and pressurize the carbon dioxide and coal gas entering the heating and pressurizing system and then send them into the inside of the blast furnace body.

The utility model provides a blast furnace gas condenser which comprises a tower body, tube plates and vortex section heat exchange tubes are arranged in the tower body, a condensation structure is arranged between the tube plates, the condensation structure comprises a baffle plate, a circulating water outlet and a circulating water inlet, and a gas inlet, a gas outlet, a manhole and a liquid seal device are arranged on the tower body. The blast furnace gas condensation system comprises a plurality of blast furnace gas condensers, and comprises three first condensers and three second condensers which are connected in series; the heat exchanger serving as a condensing device is simple and durable in structure, long in service life, simple to maintain and low in maintenance cost; the problem of corrosion of gas transportation pipelines can be solved; the condensing device is vertically arranged, and a condensate recovery device is arranged, so that condensate recovery and unified treatment are facilitated; a liquid seal device is arranged below the tower body to prevent gas leakage and ensure safety; the demister is arranged at the outlet of the gas pipeline to ensure the dryness of the gas; after the coal gas is dehydrated, the low-level heating value is increased.

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 dust removal, and discloses an ironmaking blast furnace gravity dust removal pneumatic conveying device with an anti-blocking function, which comprises a dust removal box, a conveying pipe is arranged at the bottom end of the dust removal box, and a discharge pipe is fixedly connected between the conveying pipe and the dust removal box. According to the ironmaking blast furnace gravitational dust removal pneumatic conveying device with the anti-blocking function, a rotating block, a movable groove and a cleaning brush are arranged, and a driving motor drives the rotating block to rotate through a rotating shaft, so that a movable block on one side of the front end of the rotating block slides in the movable groove; the movable frame can drive the cleaning brush to slide up and down on the left side of the filter screen through the mounting rod, the cleaning brush slides up and down on one side of the filter screen so that the filter screen can be cleaned, and the situation that dust blocks the interior of the filter screen and influences dust conveying is prevented; the problems that dust on a filter screen is inconvenient to treat, and the pneumatic conveying efficiency is easily affected are solved.

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 belongs to the technical field of ironmaking dust removal, and particularly relates to a blast furnace ironmaking dust removal device. Comprising a circular box, a supporting mechanism is arranged at the bottom of the circular box, pipelines fixedly communicate with the left side of the bottom and the left side of the top of the circular box, a discharge pipe fixedly communicates with the right side of the bottom of the circular box, and an opening is formed in the right side of the top of the circular box; the square mounting block is rotationally assembled in the circular box body; the mounting box body is fixedly mounted on the right side of the top of the circular box body and is matched with the opening in position; the telescopic end of the air cylinder extends into the mounting box body and is fixedly connected with the spraying mechanism; according to the utility model, the structure is simple, the design is reasonable, the two filter plates can be conveniently and alternately used during use, the influence on the dust removal efficiency due to long-time shutdown is effectively avoided, the used filter plates do not need to be cooled and disassembled when being cleaned, the spray mechanism can be used for directly flushing, and the operation is convenient.

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 relates to a blast furnace gas carbon capture and sintering machine head ash treatment process and device, and the process comprises the following steps: S1, carrying out absorption treatment on blast furnace gas by using a lean amine solution as an absorbent to obtain a rich amine solution; s2, mixing the amine-rich liquid with the sintering machine head ash, and removing precipitates after a first precipitation reaction to obtain a first filtrate; s3, a heavy metal trapping agent and a flocculating agent are added into the first filtrate, precipitates are removed after a second precipitation reaction, and second filtrate is obtained; s4, the second filtrate is subjected to evaporative crystallization, and amine steam and inorganic salt are recycled. According to the method, CO2 in the amine-rich liquid is removed through the sintering machine head ash, steam loss is avoided, the carbon capture cost is reduced, meanwhile, alkali needed in traditional machine head ash treatment is replaced with the amine-rich liquid, the dosage of heavy and impurity removal agents is reduced, and the cost is greatly reduced.

The present invention discloses a liquid phase vaporization detoxification method suitable for blast furnace gas hydrolysis desulfurization process, which utilizes a liquid organic amine solution to be vaporized in a dedicated vaporization device, and the vaporized gas reacts with the blast furnace gas in the gas phase. The process device is installed on the pipeline connecting the gravity dust collector and the bag dust collector; the liquid phase detoxification liquid is vaporized into a gas phase at high temperature and then reacts with HCl, HF, HCN, HNO3, SO3 in the blast furnace gas. 2‑ 、SO4 2‑ The inorganic acid radicals react with the ions, generating stable chlorides and salts that adhere to the blast furnace gas dust and are collected in a bag filter before being discharged. The method of the present invention achieves an acidic poison removal rate exceeding 90%, thereby protecting the hydrolysis catalyst from poisoning and deactivation, significantly extending its service life. This process requires minimal initial investment and occupies a small footprint. Its skid-mounted design facilitates installation and transportation, and the system utilizes integrated PLC control for simple operation.