WO2013073776A1 - Appareil et procédé d'élimination d'une couche de dépôt non brûlée d'une zone de combustion d'un haut-fourneau - Google Patents

Appareil et procédé d'élimination d'une couche de dépôt non brûlée d'une zone de combustion d'un haut-fourneau Download PDF

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Publication number
WO2013073776A1
WO2013073776A1 PCT/KR2012/008250 KR2012008250W WO2013073776A1 WO 2013073776 A1 WO2013073776 A1 WO 2013073776A1 KR 2012008250 W KR2012008250 W KR 2012008250W WO 2013073776 A1 WO2013073776 A1 WO 2013073776A1
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WO
WIPO (PCT)
Prior art keywords
blast furnace
capsule
combustion zone
unburned
gas
Prior art date
Application number
PCT/KR2012/008250
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English (en)
Korean (ko)
Inventor
최태화
이동조
Original Assignee
주식회사 포스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to CN201280056785.3A priority Critical patent/CN104053793B/zh
Priority to JP2014542223A priority patent/JP6055839B2/ja
Publication of WO2013073776A1 publication Critical patent/WO2013073776A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • C21B9/02—Brick hot-blast stoves
    • C21B9/06—Linings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/22—Dust arresters
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/44—Refractory linings
    • C21C5/441—Equipment used for making or repairing linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/80—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes
    • F41B11/87—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes for industrial purposes, e.g. for surface treatment

Definitions

  • the present invention relates to a combustion zone unburned deposit removal device and a removal method of the blast furnace for more effectively and reliably remove the unburned deposits formed in the combustion zone inside the blast furnace.
  • blast furnace operation is a process of charging iron ore and main fuel coke into the blast furnace, and the molten iron is blown by blowing hot air and oxygen through the vent in the bottom of the blast furnace.
  • the coke is burned by hot air and oxygen in the blast furnace.
  • Iron ore in the blast furnace is reduced and melted by high temperature heat and reducing gas generated during coke combustion.
  • various phases such as solids, liquids, gases, and powders coexist, and more than 20 chemical reactions occur such as iron ore reduction.
  • Iron ore and coke drops from the top of the blast furnace over 4-5 hours, and in the process, it is made of molten iron and slag through various phase changes and chemical reactions and is discharged through the outlet of the bottom of the blast furnace.
  • the combustibility of the pulverized coal is better than the coke, so the residence time of the coke increases in the furnace, thereby increasing the amount of dust generated, and the amount of unburned pulverized coal also increases, so that more sedimentary layers are formed on the rear of the combustion table. Will accumulate.
  • the heat transfer and the flow of the reducing gas are worsened, the amount of molten iron is reduced, and the utilization rate of the reducing gas is lowered, thereby lowering the overall blast furnace operation efficiency. This problem is exacerbated as the contents of the blast furnace increase.
  • the blowing air temperature is increased, the oxygen blowing amount is increased, the internal temperature of the blast furnace is raised, and the lance structure for grinding the coal is blown so as to adjust the amount of fine coal injection in a conventional manner or to improve the combustibility of the fine coal.
  • the lance structure for grinding the coal is blown so as to adjust the amount of fine coal injection in a conventional manner or to improve the combustibility of the fine coal.
  • the present invention provides a blast furnace unburned deposit removal device and a method for removing the unburned deposit formed on the blast furnace combustion zone more effectively and reliably during operation.
  • the present removal device may include an impact means for destroying the unburned deposit layer by applying impact energy to the unburned deposit layer formed at the rear end of the blast furnace.
  • the impact means may include a capsule that explodes to impact the deposition layer, and a gas generating material that is stored in the capsule and generates gas to explode the capsule.
  • the gas generating material may include a material that generates an expansion gas by a chemical reaction.
  • the gas generating material may include a material that is vaporized and expands.
  • the gas generating material may be a mixture in which sugar is mixed with potassium nitrate or sodium nitrate.
  • the gas generating material may further include kerosene.
  • the gas generating material may include 70 to 80% by weight of potassium nitrate or sodium nitrate, and 20 to 30% by weight of sugar.
  • the gas generating material may include 60 to 80% by weight of potassium nitrate or sodium nitrate, 20 to 30% by weight of sugar, and 0 to 10% by weight of kerosene.
  • the gas generating material may be liquid oxygen.
  • the capsule may be made of a material that is dissolved by the internal heat of the blast furnace.
  • the capsule may be made of aluminum or iron or stainless steel.
  • the capsule is empty inside and an injection hole for injecting a gas generating material therein is formed on one side, the stopper for sealing the capsule in the injection hole may be a structure that is detachably fastened.
  • the capsule may have a structure in which one end portion is pointed.
  • the apparatus may further comprise a conveying means for positioning said impact means in an unburned deposit.
  • the transport means may include a launch tube connected to the internal combustion zone through the blast furnace blast furnace and mounted inside the capsule, and an energy supply unit connected to the launch tube to supply energy for launching the capsule.
  • the launch tube may have a structure connected to a combustion zone observation window installed at the blast furnace vent.
  • the launch tube may be a structure installed in the pulverized coal injection lance installed in the blast furnace vent.
  • the energy supply unit may include a push rod for pushing the capsule, and a driving unit for moving the push rod forward, so as to push the push rod to launch the capsule.
  • the energy supply unit may supply a gas to the launch tube to launch a capsule at a gas pressure.
  • the gas may be nitrogen or air.
  • the conveying means may further include an airtight ring installed along the inner circumferential surface of the launch tube and in close contact with the capsule to maintain airtightness.
  • the energy supply unit is a supply pipe connected to the launch tube, a high pressure tank connected to the supply pipe and filled with gas to supply a high pressure gas to the launch tube, a first valve installed at the supply pipe to open and close the supply pipe, and the high pressure tank. It may be installed on the gas supply line to be connected may include a boost pump for filling the gas into the high pressure tank.
  • the energy supply unit may further include a pressure equalizing unit for adjusting the pressure of the launch tube before the capsule launch according to the internal pressure of the blast furnace.
  • the equalization part is connected to the gas supply line to fill the filling tank, the branch pipe is installed between the filling tank and the launch tube, the branch pipe installed in the branch pipe to open and close the branch pipe, the launch tube It may include a launch tube valve for opening and closing the launch tube.
  • the present removal method may include the step of applying the impact energy to the unburned deposit formed on the rear end of the combustion zone of the blast furnace to destroy the unburned deposit.
  • the removal method includes a preparation step of preparing a capsule in which a gas generating material generating gas is injected, a transfer step of transferring the capsule to an unburned deposit in the blast furnace, and an explosion step in which the capsule is exploded by internal heat of the blast furnace. can do.
  • the gas generating material may include a material that generates an expansion gas by a chemical reaction.
  • the gas generating material may include a material that is vaporized and expands.
  • the gas generating material may be a mixture in which sugar is mixed with potassium nitrate or sodium nitrate.
  • the gas generating material may further include kerosene.
  • the gas generating material may include 70 to 80% by weight of potassium nitrate or sodium nitrate, and 20 to 30% by weight of sugar.
  • the gas generating material may include 60 to 80% by weight of potassium nitrate or sodium nitrate, 20 to 30% by weight of sugar, and 0 to 10% by weight of kerosene.
  • the gas generating material may be liquid oxygen.
  • the capsule may be made of a material that is dissolved by the internal heat of the blast furnace.
  • the capsule may be made of aluminum or iron or stainless steel.
  • the transporting step may include mounting a capsule in a launch tube connected to an internal combustion zone through a blast furnace blast furnace, and supplying a high pressure gas to the launch tube to push the capsule out.
  • the gas may be nitrogen or air.
  • the transfer step may further include a pressure equalization step for adjusting the pressure of the launch tube according to the blast furnace internal pressure before the firing step.
  • the flow of the gas and the melt can be more smoothly improved, thereby lowering the furnace pressure and increasing the utilization rate of the reducing gas.
  • FIG. 1 is a schematic view showing a structure for removing combustion zone unburned deposits in a blast furnace according to the present embodiment.
  • FIG. 2 is a schematic view showing the launch tube of the combustion zone unburned sediment removal device of the blast furnace according to the present embodiment.
  • FIG 3 is a cross-sectional view showing a capsule of the blast furnace unburned deposit layer removal apparatus according to the present embodiment.
  • FIG. 4 is a schematic view showing a part of the configuration of the blast furnace unburned sediment removal device according to the present embodiment.
  • Fig. 1 shows the structure of the blast furnace unburned sediment layer removal according to the present embodiment.
  • the blast furnace 100 blows high temperature hot air and oxygen and pulverized coal through the tuyere 110 formed at the bottom thereof to produce molten iron by melting iron ore and coke charged therein.
  • the blowing hole 120 of the blast furnace 100 is provided with a blowing pipe 120 for blowing hot air.
  • the blowing pipe 120 is a tubular structure having an internal passage, and the observation window 122 for checking the combustion state inside the blast furnace 100 is installed in the horizontal direction at the outer end.
  • the blowing pipe 120 has an insertion hole 124 is formed on the side of the distal end so that the pulverized coal lance 130 is inserted into the interior through the insertion hole 124. Accordingly, the pulverized coal is introduced into the blast furnace 100 through the tuyere 110 of the blast furnace 100 with the hot air introduced into the blow pipe through the pulverized coal lance 130 and introduced into the blow pipe.
  • Coke or pulverized coal is burned by hot air and oxygen blown into the blast furnace 100.
  • This combustion reaction occurs mainly in the combustion zone 200 in front of the tuyere 110 to blow hot air into the blast furnace 100.
  • Combustion zone 200 is a large pupil form formed by hot air blown at a flow rate of 250 ⁇ 290m / sec, coke and pulverized coal meets the oxygen here and burns. In this process, some of the differentiated coke and pulverized coal are not burned, but are stacked on the back of the combustion zone 200 to form the unburned deposition layer 210.
  • the present removal device is for removing the deposition layer 210, and includes impact means for destroying the deposition layer 210 by applying impact energy to the deposition layer 210 formed at the rear end of the combustion zone 200 of the blast furnace 100. do.
  • the impact means may be exploded to impact the deposition layer 210, and the capsule 10 may be stored in the capsule 10 to generate gas. It includes a gas generating material 20 to explode.
  • the capsule 10 is formed in a cylindrical shape, the inside of the hollow structure so that the gas generating material 20 can be filled.
  • One end of the capsule 10 is formed with an injection hole 12 for injecting the gas generating material 20 therein.
  • the stopper 14 is detachably fastened to the injection hole 12 to seal the capsule 10.
  • the capsule 10 has a pointed structure toward one end toward the end. This structure allows the capsule 10 to be more easily embedded in the combustion zone 200 when the capsule 10 is launched toward the combustion zone 200. Therefore, the capsule 10 can reach the deposition layer 210 behind the combustion zone 200 sufficiently with less firing energy.
  • the injection hole 12 is formed on the pointed tip side of the capsule (10).
  • the stopper 14 coupled to the injection hole 12 is formed in a cone shape to form a pointed tip of the capsule 10.
  • the threaded surface is processed on the joint surface of the injection hole 12 and the stopper 14 and may be coupled to each other by a screwing method.
  • the capsule 10 may be made of a material having a melting point below the ambient temperature of the blast furnace 100, the internal combustion zone 200 more precisely, the material dissolved by the heat inside the blast furnace 100.
  • the capsule 10 may be made of aluminum or iron or stainless steel. Accordingly, the capsule 10 is injected into the blast furnace 100 to remove the deposition layer 210 and then melted and removed by the heat inside the blast furnace 100.
  • the gas generating material 20 is filled in the capsule 10, and includes a material that generates an expansion gas by a chemical reaction.
  • the material may be a material that generates gas by reacting with heat inside the blast furnace 100. Heat inside the blast furnace 100 applied to the material may be transferred indirectly to the material through the capsule 10 or directly to the material when the capsule 10 is dissolved.
  • the gas generating material 20 may be a mixture of sugar (C 12 H 22 O 11 ) mixed with potassium nitrate (KNO 3 ).
  • the gas generating material 20 may include sodium nitrate (NaNO 3 ) instead of potassium nitrate.
  • the gas generating material 20 may further include kerosene (C 16 H 34 ). Kerosene increases the explosive power of the capsule (10).
  • the potassium nitrate or sodium nitrate and sugar may be charged into the capsule 10 in a solid state.
  • the breaking force of the capsule 10 may be adjusted by varying the content of each material.
  • the gas generating material 20 may be mixed with 70 to 80% by weight of potassium nitrate or sodium nitrate, and 20 to 30% by weight of sugar.
  • the gas generating material 20 may be mixed with potassium nitrate or sodium nitrate 60 to 80% by weight, sugar 20 to 30% by weight, kerosene 0 to 10% by weight.
  • the gas generating material 20 generates impact energy capable of destroying the deposited layer 210 by generating a gas having a volume of several thousand times by the reaction of potassium nitrate, titanium nitrate, and sugar.
  • Capsule 10 containing the mixture is exploded by the expansion pressure of the gas generated therein. Therefore, the deposition layer 210 of the combustion zone 200 is destroyed by the impact of the explosive force of the capsule 10 and the expansion energy of the gas generated in the mixture.
  • the gas generating material 20 may include a material that is expanded by vaporization.
  • the gas generating material 20 may be liquid oxygen.
  • Liquid oxygen is present in the liquid state in the capsule 10.
  • the liquid oxygen is evaporated by heat transferred through the capsule 10 inside the blast furnace 100 and expanded to a volume thousands of times.
  • the capsule 10 containing the liquid oxygen is exploded by the expansion pressure of the oxygen generated therein. Therefore, the deposition layer 210 of the combustion zone 200 is destroyed by being impacted by the explosive force of the expansion energy and the capsule 10 due to the vaporization of the liquid oxygen.
  • liquid oxygen when used as the gas generating material 20, the liquid oxygen is vaporized to supply oxygen to the deposition layer 210. Therefore, it is possible to additionally obtain the effect of the combustion of the unburned pulverized coal, powdered coke, etc. accumulated in the deposition layer 210 by the supplied oxygen.
  • the total amount of the gas generating material 20 into the capsule 10 may be set in various ways depending on the state of the deposition layer 210 to be destroyed.
  • the breaking force of the capsule 10 may be increased, but when excessive, the breaking force is too large and may affect the blast furnace 100 equipment. If the amount of the gas generating material 20 is too small, the breaking force may be weakened so that the deposition layer 210 may not be destroyed.
  • the removal device further includes a transfer means for launching the capsule 10 into the combustion zone 200 and placing it in the deposition layer 210. 3 and 4 show the transfer means.
  • the transfer means is connected to the internal combustion zone 200 through the vent 110 of the blast furnace 100 and the launch tube 30, the capsule 10 is mounted therein, and the launch tube 30 It is connected to the capsule 10 includes an energy supply unit 40 for supplying energy for launching.
  • the capsule 10 mounted on the launch tube 30 is fired at high speed by the energy applied from the energy supply unit 40 to the launch tube 30, and is embedded in the deposition layer 210 of the combustion table 200.
  • the launch tube 30 is a long extending tube structure.
  • the inner diameter of the launch tube 30 corresponds approximately to the outer diameter of the capsule 10.
  • An airtight ring 32 is installed on the inner circumferential surface of the launch tube 30 to prevent a gap between the capsule 10 and the inner circumferential surface.
  • the launch tube 30 is connected to the blowing pipe 120 installed in the tuyere 110 of the blast furnace 100 and the capsule 10 as the deposition layer 210 of the combustion table 200 through the blowing pipe 120. Will fire.
  • the launch tube 30 may be connected to the observation window 122 is installed at the horizontal front end of the blowing pipe (120).
  • the launch tube 30 may be connected to an end of the pulverized coal injection lance 130 installed in the blowing pipe 120.
  • the energy supply unit 40 may be applied to a variety of structures for the capsule 10 launch.
  • the energy supply unit 40 may include a push rod inserted into the launch tube 30 to push the capsule, and a drive unit such as a drive cylinder for moving the push rod forward at high speed.
  • a drive unit such as a drive cylinder for moving the push rod forward at high speed.
  • the push rod is pushed out at high speed by the operation of the drive unit to push out the capsule.
  • the capsule is then released at high speed from the launcher by the pushing force of the push rod.
  • the energy supply unit 40 may supply a high pressure gas to the launch tube 30 to launch the capsule 10 at a gas pressure.
  • Gas for launching the capsule 10 may be nitrogen or air.
  • FIG. 4 illustrates a configuration of an energy supply unit 40 for using a high pressure gas for launching the capsule 10.
  • the capsule 10 firing gas is nitrogen
  • the supply pipe 42 is connected to the launch tube 30, the high pressure tank 44 is connected to the supply pipe 42 and filled with nitrogen to supply high-pressure nitrogen to the launch tube 30, the A boosting pump installed on the supply pipe 42 to open and close the supply pipe 42 and the nitrogen supply line 41 connected to the high pressure tank 44 to charge nitrogen into the high pressure tank ( 48).
  • the nitrogen filled in the high pressure tank 44 is supplied to the launching tube 30 through the supply pipe 42 to act as a driving force for launching the capsule 10 from the launching tube 30.
  • the high pressure tank 44 is a tank filled with high pressure nitrogen for launching the capsule 10.
  • the high pressure tank 44 instantly supplies high pressure nitrogen to the launch tube 30 through the supply pipe 42.
  • a fourth valve 53 is installed in the nitrogen supply line 41 to control the supply of nitrogen through the supply line 41.
  • One side of the high pressure tank 44 is provided with a pressure gauge 54 for detecting the pressure inside the high pressure tank 44.
  • the boost pump 48 fills the high pressure tank 44 with the nitrogen supplied through the nitrogen supply line 41 at a set pressure.
  • a supply valve 50 is installed to open and close the nitrogen supply line and supply nitrogen to the high pressure tank.
  • the supply valve 50 is opened when the pressure of the pressure gauge 54 installed in the high pressure tank after the capsule is released, thereby filling the high pressure tank 44 with the nitrogen supplied by the boost pump at the set pressure.
  • the front and rear of the high pressure tank 44 is provided with a second valve 51 and a third valve 52 which open and close the supply pipe 42 and the supply line 41 respectively connected to the high pressure tank 44.
  • the second valve 51 and the third valve 52 are to assist the first valve 46 and the supply valve 50, and are manually or automatically opened and closed to inject nitrogen into the high pressure tank 44 when necessary. Or spilled.
  • the energy supply unit 40 further includes a pressure equalizing unit for adjusting the pressure of the launch tube 30 to the pressure inside the blast furnace 100 before launching the capsule 10.
  • the internal pressure of the blast furnace 100 is a high pressure of 4 atm or more.
  • the gas inside the blast furnace 100 may flow back through the launch tube 30. In order to prevent the backflow of the gas it is necessary to match the pressure inside the blast furnace 30 with the internal pressure of the blast furnace 100 before the capsule 10 is launched.
  • the equalization part is connected to the nitrogen supply line 41, the filling tank 61 is filled with gas, the branch pipe 62 is installed between the filling tank 61 and the launch tube 30, the branch pipe And a branch pipe valve 63 installed at the 62 to open and close the branch pipe 62, and a launch pipe valve 64 provided at the launch pipe 30 to open and close the launch pipe 30.
  • the filling tank 61 is connected to a boost pump 48 installed in the nitrogen supply line 41. Nitrogen is charged to the filling tank 61 or / and the high pressure tank 44 according to the operation of the boost pump 48.
  • the fifth valve 65 and the sixth valve 66 for opening and closing the branch pipe 62 and the supply line 41 connected to the filling tank 61 is provided.
  • the fifth valve 65 and the sixth valve 66 are to assist the branch pipe valve 63, and are manually or automatically opened and closed as necessary to allow nitrogen to flow into or out of the filling tank 61.
  • the branch pipe 62 connects the filling tank 61 and the launch tube 30 to supply nitrogen to the launch tube 30.
  • the branch pipe 62 is connected to the launch tube 30 between the launch tube valve 64 installed in the launch tube 30 and the capsule 10 mounting position of the launch tube 30.
  • the launch tube 30 is further provided with a pressure gauge 67 for detecting the pressure inside the launch tube 30.
  • the branch pipe valve 63 installed in the branch pipe 62 and the launch pipe valve 64 installed in the launch pipe 30 before the capsule 10 is launched nitrogen is supplied to the inside of the launch pipe 30 to supply the launch pipe 30.
  • the internal pressure can be maintained to be the same as the pressure inside the blast furnace 100.
  • Removal of the deposited layer 210 according to the present embodiment is made through the method of destroying the deposited layer 210 by applying impact energy to the deposited layer 210.
  • a gas generating material 20 generating gas is prepared to prepare a capsule 10 injected therein.
  • the operator loads the gas generating material 20 for exploding the capsule 10 into the capsule 10 and seals the capsule 10 to prepare it.
  • the capsule 10 for generating the impact energy When the capsule 10 for generating the impact energy is prepared, the capsule 10 is fired into the blast furnace 100 in the following process, and is embedded in the deposition layer 210 of the combustion zone 200 of the blast furnace 100.
  • a blower pipe is installed in the launch tube 30, and the launch tube 30 on which the capsule 10 is mounted is provided at the tuyere 110 of the blast furnace 100.
  • the launch tube 30 may be connected to the observation window 122 installed at the tip of the blow pipe 120, or may be connected to the pulverized coal injection lance 130 installed at the blow pipe 120.
  • the pulverized coal blowing lance 130 extending into the blowing pipe 120 is retracted to the outside, between the fired capsule 10 and the pulverized coal blowing lance 130. Do not cause interference.
  • a launch tube 30 is mounted at the outer end of the pulverized coal blowing lance 130.
  • the supply pipe 42 into which the high pressure nitrogen is injected is connected to the rear end of the launching tube 30.
  • the high pressure nitrogen generates a driving force for pushing the capsule 10.
  • the capsule 10 mounted on the launching tube 30 can be launched. It becomes possible.
  • the capsule 10 fired from the launch tube 30 is past the blowing pipe 120 and is embedded in the combustion zone 200 to be positioned in the deposition layer 210 behind the combustion zone 200.
  • the capsule 10 is exploded by the internal heat of the blast furnace 100 in the deposition layer 210 to remove the deposition layer 210.
  • the removal method is subjected to a process of adjusting the internal pressure of the launch tube 30 to the internal pressure of the blast furnace 100 in a state in which the launch tube 30 is connected to the blast furnace 100 before the capsule 10 is launched.
  • the first valve 46 installed in the supply pipe 42 is opened to launch the capsule 10.
  • the high pressure nitrogen charged in the high pressure tank 44 is instantaneously supplied to the launch tube 30 through the supply pipe 42.
  • the capsule 10 mounted on the launch tube 30 is pushed out at a high speed by the high pressure nitrogen supplied to the launch tube 30, and is launched into the blast furnace 100 through the tip of the launch tube 30.
  • the capsule 10 fired from the launch tube 30 is impregnated into the combustion zone 200 of the blast furnace 100 to be embedded in the deposition layer 210 at the rear end of the combustion zone 200.
  • the first valve 46 is immediately closed to block the flow of the gas inside the blast furnace 100 through the launch tube 30.
  • the capsule 10 embedded in the sedimentation layer 210 inside the blast furnace 100 has a gas volume of several thousand times as large as the gas generating material 20 loaded inside the capsule 10 reacts with the heat in the blast furnace 100. Will generate
  • the capsule 10 is exploded by the expansion pressure of the gas generated therein. Impact energy is generated in the deposition layer 210 by the expansion energy of the gas and the explosive force of the capsule 10. Therefore, the deposition layer 210 of the combustion zone 200 is destroyed and removed by such impact energy.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture Of Iron (AREA)
  • Blast Furnaces (AREA)

Abstract

Afin d'éliminer plus efficacement et plus complètement la couche de dépôt non brûlée formée dans la zone de combustion d'un haut-fourneau pendant son fonctionnement, un appareil et un procédé sont proposés pour éliminer la couche de dépôt non brûlée de la zone de combustion d'un haut-fourneau qui comprend un moyen d'application de chocs pour rompre la couche de dépôt non brûlée par application d'une énergie de choc sur la couche de dépôt non brûlée à l'extrémité arrière de la zone de combustion du haut-fourneau.
PCT/KR2012/008250 2011-11-17 2012-10-11 Appareil et procédé d'élimination d'une couche de dépôt non brûlée d'une zone de combustion d'un haut-fourneau WO2013073776A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201280056785.3A CN104053793B (zh) 2011-11-17 2012-10-11 去除高炉回旋区的未燃烧沉积层的装置及方法
JP2014542223A JP6055839B2 (ja) 2011-11-17 2012-10-11 高炉の燃焼帯の未燃焼堆積層除去装置および除去方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2011-0120176 2011-11-17
KR1020110120176A KR101318385B1 (ko) 2011-11-17 2011-11-17 고로의 연소대 미연소 퇴적층 제거 장치 및 제거 방법

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WO2013073776A1 true WO2013073776A1 (fr) 2013-05-23

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PCT/KR2012/008250 WO2013073776A1 (fr) 2011-11-17 2012-10-11 Appareil et procédé d'élimination d'une couche de dépôt non brûlée d'une zone de combustion d'un haut-fourneau

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JP (1) JP6055839B2 (fr)
KR (1) KR101318385B1 (fr)
CN (1) CN104053793B (fr)
WO (1) WO2013073776A1 (fr)

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IT202000012658A1 (it) * 2020-05-28 2021-11-28 Bio Protect Group Srl Metodo ed apparato per la pulizia a caldo o a freddo di scorie della combustione mediante onda d’urto esplosiva

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KR101673174B1 (ko) * 2015-12-23 2016-11-07 주식회사 포스코 고로의 연소대 미연소 퇴적층 제거 장치 및 제거 방법
KR20180001860A (ko) * 2016-06-28 2018-01-05 주식회사 포스코 용철 제조장치 및 이를 이용한 용철 제조방법
US10599223B1 (en) 2018-09-28 2020-03-24 Apple Inc. Button providing force sensing and/or haptic output
US10691211B2 (en) 2018-09-28 2020-06-23 Apple Inc. Button providing force sensing and/or haptic output
KR102354371B1 (ko) * 2021-04-05 2022-01-21 금수산업(주) 연소가스에 포함된 유해가스 연소를 위한 소각용 버너구조

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KR20130054658A (ko) 2013-05-27
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