CN104053793A - Apparatus and method for removing uncombusted deposit layer from combustion zone of blast furnace - Google Patents
Apparatus and method for removing uncombusted deposit layer from combustion zone of blast furnace Download PDFInfo
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- CN104053793A CN104053793A CN201280056785.3A CN201280056785A CN104053793A CN 104053793 A CN104053793 A CN 104053793A CN 201280056785 A CN201280056785 A CN 201280056785A CN 104053793 A CN104053793 A CN 104053793A
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- blast furnace
- unburn
- settled layer
- sealed vessel
- removal according
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Classifications
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- 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
- 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
- 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
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- 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
Abstract
In order to more effectively and completely remove the uncombusted deposit layer formed in the combustion zone of a blast furnace during operation, an apparatus and method are provided for removing the uncombusted deposit layer from the combustion zone of a blast furnace. The apparatus includes a shocking means for breaking up the uncombusted deposit layer by applying shock energy to the uncombusted deposit layer at the rear end of the combustion zone of the blast furnace.
Description
Technical field
The present invention relates to a kind of device and method of removing the unburn settled layer of Blast Furnace Raceway, the device and method of the unburn settled layer of this removal Blast Furnace Raceway is for more effectively and effectively removing the unburn settled layer forming in the convolution district of high furnace interior.
Background technology
In general, blast furnace operation is in blast furnace, to pack into as the iron ore of main raw material with as the coke of main fuel, and is blown into high-temperature hot-air and oxygen by the air port of bottom house, thereby produces the operation of molten iron.Coke burns by high-temperature hot-air and oxygen in blast furnace.By the high heat and the reducing gas that produce when coke burns, the iron ore in blast furnace is reduced and melting.The multiple phases (Phase) such as solid, liquid, gas and powder coexist in blast furnace, and produce the chemical reactions more than kind more than 20 such as reduction of iron ore reaction.Iron ore and coke are fallen below for 4～5 hours from the top of blast furnace, in this process, become molten iron and slag, and discharge by the iron notch of bottom house by various phase change and chemical reaction.
At bottom house, by air port, be blown into air or oxygen, fine coal is blown in blast furnace together with hot blast as auxiliary fuel.By being blown into hot blast and oxygen, coke and the pulverized coal friring of high furnace interior.This combustion reactions is mainly carried out in the convolution district being blown into high furnace interior before the air port of hot blast.
In described convolution district, because of reasons such as the fierce Yo-yo phenomenon of coke and oxygen deficiencies, can produce coke and the unburned phenomenon of the part in fine coal of powdered.Unburned coke and fine coal are piled up and are formed settled layer after convolution district.In addition, the settled layer consisting of unburned coke powder, fine coal and ash content forms firm wall, thereby hinders convolution district gas to the inflow at blast furnace center, and hinders flowing of the melts that generates on top.Especially, in being blown in a large number the blast furnace operation of fine coal, because the combustionproperty of fine coal is better than coke, the residence time of coke in stove extends, thereby increase the growing amount of powder, also increase the growing amount of unburn fine coal simultaneously, and then pile up more settled layer after convolution district.Thus, heat is transmitted and the mobility variation of reducing gas and cause the decline of molten iron production amount, and reduces the utilization ratio of reducing gas, causes on the whole the decline of blast furnace operation efficiency.The internal volume of blast furnace is larger, and settling is just more, and this problem is more serious.
For the timely settled layer of eliminating this convolution district, attempted regulating the fine coal amount of being blown in the past or be blown into by improving the internal temperature of wind pushing temperature, the increase oxygen amount of being blown into, raising blast furnace or improving fine coal the several different methods such as incendivity that improve fine coal with spray gun structure.
Yet, for removal micro mist, slag and coal ash, to grade and solidify the settled layer forming as concrete, described structure is not in the past perfect technology, can not bring gratifying result.Therefore, need to develop a kind of technology that can eliminate in time described settled layer.
Summary of the invention
Technical problem
So, the invention provides a kind of device and method of removing the unburn settled layer of Blast Furnace Raceway, to can more effectively and effectively remove the unburn settled layer that is formed at Blast Furnace Raceway in operation.
Technical scheme
For this reason, this removal device can comprise: percussion mechanism, and for applying impact energy to being formed on the unburn settled layer of the rear end, convolution district of blast furnace, to destroy described unburn settled layer.
Described percussion mechanism can comprise: sealed vessel, for described settled layer being applied to impact by blast; And gas generating material, be stored in described sealed vessel, for generating gas to ignite sealed vessel.
Described gas generating material can comprise the material that generates expanding gas by chemical reaction.
Described gas generating material can comprise the material expanding by gasifying.
Described gas generating material can be the mixture that is mixed with granulated sugar in saltpetre or SODIUMNITRATE.
Described gas generating material can further comprise lam-oil.
Described gas generating material can comprise the saltpetre of 70～80 % by weight or the granulated sugar of SODIUMNITRATE and 20～30 % by weight.
Described gas generating material can comprise saltpetre or SODIUMNITRATE, the granulated sugar of 20～30 % by weight and the lam-oil of 0～10 % by weight of 60～80 % by weight.
Described gas generating material can be liquid oxygen.
Described sealed vessel can be by being formed by the material of hot melt solution in blast furnace.
Described sealed vessel can consist of aluminium, iron or stainless steel.
Described sealed vessel can be inner for hollow, is formed with for the inlet to inner injecting gas generating material, and can be combined with removably for sealing the structure of the lid of sealed vessel on described inlet in a side.
Described sealed vessel can be that a side leading section is sharp-pointed structure.
This device can further comprise: e Foerderanlage, and for making described percussion mechanism be positioned at unburn settled layer.
Described e Foerderanlage can comprise: transmitting tube, and the air port by blast furnace is connected with inner convolution district, and carries sealed vessel in inside; With Power supply portion, be connected to described transmitting tube, supply with for launching the energy of described sealed vessel.
Described transmitting tube can be the structure being connected with the viewing window that is arranged on the convolution district of blast-furnace tuyere.
Described transmitting tube can be mounted in the structure that the fine coal that is arranged at blast-furnace tuyere is blown into spray gun.
Described Power supply portion can comprise: push rod, for propelling out described sealed vessel; And driving part, for described push rod is moved forward, described Power supply portion utilizes push rod to propel out the structure of sealed vessel.
Described Power supply portion can be to described transmitting tube supply gas, and the structure of launching sealed vessel by gaseous tension.
Described gas can be nitrogen or air.
Described e Foerderanlage can further comprise: gas-tight ring, along the inner peripheral surface setting of described transmitting tube, is close to described sealed vessel and keeps airtight.
Described Power supply portion can comprise: supply-pipe, is connected with described transmitting tube; Pressure pan, is connected with described supply-pipe, and inside is filled with gas, to transmitting tube, supplies with high pressure gas; The first valve, is arranged on described supply-pipe, for opening and closing supply-pipe; And boosting pump, be arranged on the tank connected gas supply line of described high pressure on, for to pressure pan blanketing gas.
Described Power supply portion can further comprise: equal spleniums, and for making the pressure of described transmitting tube consistent with blast furnace internal pressure before transmitting sealed vessel.
Described equal splenium can comprise: fill tank, be connected with described gas supply line, gas is filled into described filling tank; Arm, is arranged between described filling tank and described transmitting tube; Manifold valve, is arranged on described arm, for opening and closing arm; With transmitting pipe valve, be arranged on described transmitting tube, for opening and closing transmitting tube.
On the other hand, this removal method can comprise: to being formed on the unburn settled layer of the rear end, convolution district of blast furnace, apply impact energy, to destroy the step of described unburn settled layer.
This removal method can comprise: preparation step, prepare in inside, to be injected with for generating the sealed vessel of the gas generating material of gas; Supplying step, carries described sealed vessel to the unburn settled layer of Blast Furnace Raceway; With blast step, by heat in blast furnace, sealed vessel is blasted.
Described gas generating material can comprise the material that generates expanding gas by chemical reaction.
Described gas generating material can comprise the material expanding by gasifying.
Described gas generating material can be the mixture that is mixed with granulated sugar in saltpetre or SODIUMNITRATE.
Described gas generating material can further comprise lam-oil.
Described gas generating material can comprise the saltpetre of 70～80 % by weight or the granulated sugar of SODIUMNITRATE and 20～30 % by weight.
Described gas generating material can comprise saltpetre or SODIUMNITRATE, the granulated sugar of 20～30 % by weight and the lam-oil of 0～10 % by weight of 60～80 % by weight.
Described gas generating material can be liquid oxygen.
Described sealed vessel can be by being formed by the material of hot melt solution in blast furnace.
Described sealed vessel can consist of aluminium, iron or stainless steel.
Described supplying step can comprise: carry step, on the transmitting tube being connected, carry sealed vessel in the air port by blast furnace with inner convolution district; And step of transmitting, to described transmitting tube, supply with high pressure gas, to propel out sealed vessel.
Described gas can be nitrogen or air.
Described supplying step can further comprise: all press step, for before described step of transmitting, the pressure of described transmitting tube is adjusted to consistent with the pressure of high furnace interior.
Beneficial effect
As mentioned above, according to the present embodiment, by removal, be formed on the settled layer of convolution rear end, district, improve the mobile of gas and melts and become more unimpeded, thereby can reduce body of heater pressure, and improve the utilization ratio of reducing gas.
In addition, by removing settled layer, can supply with heat fully to combustion chamber, thereby improve the operating efficiency of blast furnace.
Therefore in addition, can under job state, remove settled layer, without the interruption operation extraly in order to remove settled layer or corrective maintenance, therefore can enhance productivity to greatest extent.
Accompanying drawing explanation
Fig. 1 removes the schematic diagram of structure for showing the Blast Furnace Raceway unburn settled layer of the present embodiment.
Fig. 2 is the schematic diagram of transmitting tube in the Blast Furnace Raceway unburn settled layer removal device of demonstration the present embodiment.
Fig. 3 is the sectional view of sealed vessel in the Blast Furnace Raceway unburn settled layer removal device of demonstration the present embodiment.
Fig. 4 is the schematic diagram of the part-structure of the Blast Furnace Raceway unburn settled layer removal device of demonstration the present embodiment.
Embodiment
Below, with reference to the accompanying drawings of embodiments of the invention, those skilled in the art can easily be implemented.Those skilled in the art's reason should be understood that the embodiment deformable on the basis that does not depart from concept of the present invention and scope will be described later is various ways.Adopt in the accompanying drawings identical Reference numeral to represent same or analogous part as far as possible.
The implication of all terms that comprise technical terms and scientific words that use is below identical with the general implication of understanding of those skilled in the art.In dictionary, defined term is further interpreted as having the implication conforming to current disclosed content with correlation technique document, in undefined situation, can not be interpreted as having desirable or very formal implication.
It should be noted that, accompanying drawing is schematic diagram, according to yardstick, does not draw.For clear and show easily, some exaggeration of the relative dimension of each several part and ratio or dwindle in accompanying drawing, arbitrary dimension is exemplary, rather than determinate size.
Fig. 1 removes the schematic diagram of structure for showing the Blast Furnace Raceway unburn settled layer of the present embodiment.
As shown in Figure 1, blast furnace 100 is blown into high-temperature hot-air, oxygen and fine coal by being formed on the air port 110 of bottom, makes to pack into the iron ore of high furnace interior and coke melting and produces molten iron.
In the air port 110 of described blast furnace 100, be provided with for being blown into the blast tube 120 of hot blast.Described blast tube 120, for having the tubular construction of internal passages, is provided with for confirming the viewing window 122 of the state of combustion of blast furnace 100 inside with horizontal direction at outside front end.In addition, in the front end side of described blast tube 120, be formed with socket 124, fine coal spray gun 130 is inserted in the inside of described blast tube 120 by described socket 124.Therefore, it is inner that fine coal drops into blowpipes by described fine coal spray gun 130, and by the air port 110 of blast furnace 100, be blown into the inside of blast furnace 100 together with dropping into the hot blast of blowpipe inside.
Coke and fine coal burn by being blown into hot blast and the oxygen of blast furnace 100 inside.This combustion reactions mainly occurs in the convolution district 200 above, air port 110 that is blown into hot blast to blast furnace 100.The region of the formed large pupil shape of hot blast that the flow velocity that convolution district 200 serves as reasons with 250～290m/sec blows, coke and fine coal meet and burn at this and oxygen.In this process, the coke of powdered and the part in fine coal be burning not, and forms unburn settled layer 210 piling up of convolution district 200 below.
This removal device is used for removing described settled layer 210, comprises being formed on that the settled layer 210 of 200 rear ends, convolution district of blast furnace 100 applies impact energy and the percussion mechanism that destroys described settled layer 210.
In the present embodiment, as shown in Figure 2, described percussion mechanism comprises by blast to described settled layer 210 is applied the sealed vessel 10 of impact and is stored in described sealed vessel 10 and generates the gas generating material 20 that gas is ignited sealed vessel 10.
Described sealed vessel 10 forms drum, and its inside is hollow structure, thereby can blanketing gas generating material 20.One side front end of described sealed vessel 10 is formed with the inlet 12 for injecting gas generating material 20.At described inlet 12, can be combined with and cover 14 removably, for sealing sealed vessel 10.
As shown in the figure, described sealed vessel 10 forms a side leading section and more arrives the structure that end is more sharp-pointed.This structure, when sealed vessel 10 is launched to convolution district 200, can make sealed vessel 10 more be easy to inject convolution district 200.Therefore, sealed vessel 10 can fully arrive with lower emitted energy the settled layer 210 of convolution district 200 rear sides.
Described inlet 12 is formed on the sharp-pointed front of described sealed vessel 10.The lid 14 that is incorporated into described inlet 12 forms cone-shaped, forms the sharp-pointed front end of sealed vessel 10.In the present embodiment, on the junction surface of described inlet 12 and described lid 14, be processed with screw thread, therefore to each other can be with the combination of screw thread combination.
At this, described sealed vessel 10 can be by being formed by the material of the interior hot melt solution of blast furnace 100, consists of more exactly the material with the fusing point below the atmosphere temperature in the inner convolution of blast furnace 100 districts 200.In the present embodiment, described sealed vessel 10 can consist of aluminium, iron or stainless steel.Therefore, described sealed vessel 10 is injected the inside of blast furnace 100 and is removed after settled layer 210, by the interior heat fusing of blast furnace 100, is removed.
In the present embodiment, described gas generating material 20 is filled in the inside of described sealed vessel 10, and comprises the material that generates expanding gas by chemical reaction.At this, described material can be by the interior heat of blast furnace 100 and reacts the material that generates gas.Put on the interior heat of the blast furnace 100 of described material, can arrive described material by sealed vessel 10 indirect transfer, or be directly delivered to described material when sealed vessel 10 melts.
In the present embodiment, described gas generating material 20 can be at saltpetre (KNO
3) in be mixed with granulated sugar (C
12h
22o
11) mixture.Or described gas generating material 20 replaces saltpetre and can comprise SODIUMNITRATE (NaNO
3).In addition, described gas generating material 20 can further comprise lam-oil (C
16h
34).Lam-oil increases the explosive power of sealed vessel 10.
Described saltpetre or SODIUMNITRATE and granulated sugar can pack in sealed vessel 10 with solid state.
The chemical equation of described gas generating material 20 is, 48KNO
3(S)+5C
12h
22o
11(S)=24K
2cO
3(S)+36CO
3(g)+24N
2(g)+55H
2o (g).By described reaction, gas generating material 20 generates the gas of 69mole, and produces the volumetric expansion of thousands of times.
The content that forms each material of described gas generating material 20 can affect gas generating amount, therefore can control by changing the content of described each material the destructive force of sealed vessel 10.
Change in a variety of forms the content of described each material, and the result that the destructive force under each content is tested repeatedly, obtain the optimum content of each material of following gas generating material 20.
In the present embodiment, described gas generating material 20 can be mixed by the saltpetre of 70～80 % by weight or the granulated sugar of SODIUMNITRATE and 20～30 % by weight.In addition,, when further comprising lam-oil, described gas generating material 20 can be mixed by saltpetre or SODIUMNITRATE, the granulated sugar of 20～30 % by weight and the lam-oil of 0～10 % by weight of 60～80 % by weight.
When the combined amount of described saltpetre or SODIUMNITRATE departs from described scope, too much or very few by the growing amount of the gas that produces with reacting of granulated sugar.Therefore, the explosive power of sealed vessel is excessive or too small to the settled layer in destruction convolution district, thereby is difficult to reach desirable effect.
So, described gas generating material 20 generates the gas of thousands of times of volumes by saltpetre or SODIUMNITRATE with reacting of granulated sugar, thereby produces the impact energy that can destroy settled layer 210.
The sealed vessel 10 that described mixture is housed explodes by the swelling pressure of the gas in inside generation.Therefore, in settled layer 210 expansion energy of gas that is subject to producing in mixture in convolution district 200 and the impact of the explosive power of sealed vessel 10, destroy.
In addition, in another embodiment, described gas generating material 20 can comprise the material expanding by gasifying.At this, described gas generating material 20 can be liquid oxygen.
Liquid oxygen exists with liquid state in sealed vessel 10.The heat that described liquid oxygen is subject to transmitting by sealed vessel 10 in the inside of blast furnace 100 gasifies, and is expanded to the volume of thousands of times.Therefore the sealed vessel 10 that, described liquid oxygen is housed explodes by the swelling pressure of the oxygen that produces in inside.So, the settled layer 210 in convolution district 200 be subject to liquid oxygen gasified and the expansion energy that produces and sealed vessel 10 explosive power impact and destroy.
In addition,, when liquid oxygen is used as gas generating material 20, liquid is oxygen gasified and to settled layer 210 oxygen gas-supplyings.Therefore, can additionally obtain the fine coal of the unburn state that is deposited in settled layer 210 or coke breeze charcoal etc. and pass through the effect that supplied with oxygen burns.
At this, be contained in the total amount of the gas generating material 20 in described sealed vessel 10, the state of the settled layer 210 that can destroy is as required set as different amounts.When the amount of gas generating material 20 is more, can improves the destructive force of sealed vessel 10, but when described amount is too much, because destructive force is excessive, likely have influence on blast furnace 100 equipment.When the amount of gas generating material 20 is very few, due to destructive force too a little less than, likely destroy less than settled layer 210.
This removal device further comprises for described sealed vessel 10 is launched to convolution district 200, and makes it to be positioned at the e Foerderanlage of settled layer 210.Fig. 3 and Fig. 4 demonstrate described e Foerderanlage.
As shown in the figure, described e Foerderanlage comprises: transmitting tube 30, and the air port 110 by blast furnace 100 is connected with inner convolution district 200, and carries described sealed vessel in inside; Power supply portion 40, is connected with described transmitting tube 30, supplies with for launching the energy of described sealed vessel 10.
Thus, by Power supply portion 40, put on the energy of transmitting tube 30, be equipped on the sealed vessel 10 of transmitting tube 30 by transmitted at high speed, and inject in the settled layer 210 in convolution district 200.
Described transmitting tube 30 is the tubular construction extending in long way.The internal diameter of described transmitting tube 30 is roughly corresponding with the external diameter of sealed vessel 10.Inner peripheral surface at described transmitting tube 30 is provided with the gas-tight ring 32 for the gap between plug for seal container 10 and described inner peripheral surface.
At this, described transmitting tube 30 is connected with the blast tube 120 that is arranged at the air port 110 of blast furnace 100, the settled layer 210 transmitting sealed vessels 10 by blast tube 120 to convolution district 200.
In the present embodiment, described transmitting tube 30 can be connected with the viewing window 122 that is arranged on the horizontal direction front end of blast tube 120.Except said structure, the end that described transmitting tube 30 can also be blown into spray gun 130 with the fine coal that is arranged on described blast tube 120 is connected.
Described Power supply portion 40 can apply various structures in order to launch sealed vessel 10.As an embodiment, described Power supply portion 40 can comprise: push rod, and the inside of inserting described transmitting tube 30, for propelling out sealed vessel; The driving parts such as driving cylinder, for moving forward described push rod high-speed.Under described structure, by the operation of driving part, when moving forward with high speed, propels out push rod sealed vessel.So, the thrust of sealed vessel by push rod from transmitting tube by transmitted at high speed.
As another embodiment, described Power supply portion 40 can be to described transmitting tube 30 and supplies with high pressure gas, and the structure of launching sealed vessel 10 by gaseous tension.For launching the gas of described sealed vessel 10, can utilize nitrogen or air.
The transmitting that Fig. 4 illustrates sealed vessel 10 adopts the structure of the Power supply portion 40 of high pressure gas.In the following description, the structure that is nitrogen by the transmitting of sealed vessel 10 with gas is that example describes.
As shown in the figure, described Power supply portion can comprise: supply-pipe 42, is connected with described transmitting tube 30; Pressure pan 44, is connected with described supply-pipe 42, and inside is filled with gas, to transmitting tube 30, supplies with high pressure nitrogen; The first valve 46, is arranged on described supply-pipe 42, for opening and closing supply-pipe 42; With boosting pump 48, be arranged on the gas supply line 41 being connected with described pressure pan 44, for filling nitrogen to pressure pan.
Thus, the nitrogen being filled in pressure pan 44 is supplied with to transmitting tube 30 by supply-pipe 42, and plays from the impellent effect of transmitting tube 30 transmitting sealed vessels 10.
Described pressure pan 44 is for to be filled with for launching the tank of the high pressure nitrogen of sealed vessel 10, by supply-pipe 42, high pressure nitrogen moment is supplied to transmitting tube 30.
On described nitrogen gas supply line 41, be provided with the 4th valve 53, for controlling the nitrogen of supplying with by supply line 41.One side of described pressure pan 44 is provided with the pressure warning unit 54 for detection of the internal pressure of pressure pan 44.
The nitrogen that described boosting pump 48 will be supplied with by nitrogen gas supply line 41, with the Pressure filling set in pressure pan 44.
On the nitrogen gas supply line 41 between described boosting pump 48 and described pressure pan 44, be provided with supply valve 50, this supply valve 50 is for opening and closing nitrogen gas supply line, to supply with nitrogen to pressure pan.
After transmitting sealed vessel, while being arranged on the pressure drop of pressure warning unit 54 of pressure pan, described supply valve 50 is opened, make the nitrogen supplied with by boosting pump with the Pressure filling of regulation in pressure pan 44.
At this, in the front and back of described pressure pan 44, be provided with switching is connected with pressure pan 44 respectively supply-pipe 42 and second valve 51 and the 3rd valve 52 of supply line 41.Described second valve 51 and the 3rd valve 52, for auxiliary the first valve 46 and supply valve 50, pass through while needing to open and close manually or automatically, thereby make nitrogen flow into or flow out from pressure pan 44 to pressure pan 44.
In addition, described Power supply portion 40 further comprises equal splenium, and described equal splenium for making the pressure of described transmitting tube 30 consistent with the internal pressure of blast furnace 100 before transmitting sealed vessel 10.The internal pressure of blast furnace 100 is high pressure more than 4 air pressure.Therefore,, when transmitting tube 30 is connected to blast furnace 100, the gas of blast furnace 100 inside can flow backwards by transmitting tube 30.In order to prevent the refluence of this gas, be necessary, before transmitting sealed vessel 10, the internal pressure of described transmitting tube 30 to be adjusted to consistent with the internal pressure of blast furnace 100.
Described equal splenium comprises: fill tank 61, be connected with described gas supply line, gas is filled into described filling tank; Arm 62, is arranged between described filling tank 61 and described transmitting tube 30; Manifold valve 63, is arranged on described arm 62, for opening and closing arm 62; With transmitting pipe valve 64, be arranged on described transmitting tube 30, for opening and closing transmitting tube 30.
In the present embodiment, described filling tank 61 is connected with the boosting pump 48 being arranged on nitrogen gas supply line 41.By the driving of boosting pump 48, to filling in tank 61 and/or pressure pan 44, fill nitrogen.
In the front and back of described filling tank 61, be provided with respectively and open and close the arm 62 that is connected with filling tank 61 and the 5th valve 65 and the 6th valve 66 of supply line 41.Described the 5th valve 65 and the 6th valve 66, for auxiliary branch line valve 63, pass through while needing to open and close manually or automatically, thereby make nitrogen flow into or flow out from filling tank 61 to filling tank 61.
Described arm 62 connects fills tank 61 and transmitting tube 30, to transmitting tube 30, supplies with nitrogen.Described arm 62 is connected with transmitting tube 30 being arranged between the transmitting pipe valve 64 of transmitting tube 30 and the position of the lift-launch sealed vessel 10 of transmitting tube 30.Described transmitting tube 30 is further provided with the pressure warning unit 67 for detection of the internal pressure of transmitting tube 30.
Thus, before transmitting sealed vessel 10, can control the manifold valve 63 that is arranged on arm 62 and the switching that is arranged on the transmitting pipe valve 64 of transmitting tube 30, thereby to the internal feed nitrogen of transmitting tube 30, the pressure of transmitting tube 30 inside and the internal pressure of blast furnace 100 are consistent.
Below, as follows to the process explanation of removal settled layer 210.
The removal of the settled layer 210 of the present embodiment is by settled layer 210 being applied to impact energy, the method for settled layer 210 destructions to be realized.
In order to destroy settled layer 210, first prepare sealed vessel 10, the inside of described sealed vessel 10 is injected with the gas generating material 20 that generates gas.In the set-up procedure of sealed vessel 10, operating personnel will pack in sealed vessel 10 and seal sealed vessel 10 for igniting the gas generating material 20 of sealed vessel 10.
After ready for generation of the sealed vessel 10 of impact energy, as next step process, the internal emission by sealed vessel 10 to blast furnace 100, injects in the settled layer 210 in convolution district 200 of blast furnace 100 sealed vessel 10.
In the present embodiment, in order to launch sealed vessel 10, in the inside of transmitting tube 30, carry sealed vessel 10, and the transmitting tube 30 that carries sealed vessel 10 is connected with the blast tube 120 being arranged on the air port 110 of blast furnace 100.Described transmitting tube 30 can be connected with the viewing window 122 that is arranged on blast tube 120 front ends, or is blown into spray gun 130 with the fine coal that is arranged on blast tube 120 and is connected.
When transmitting tube 30 is arranged on viewing window 122, the fine coal that makes to extend to blast tube 120 inside is blown into spray gun 130 and retreats laterally, in order to avoid the sealed vessel 10 of transmitting and fine coal are blown between spray gun 130, produce and interferes.
When needs utilize fine coal to be blown into spray gun 130 transmitting sealed vessel 10, transmitting tube 30 is arranged on to the outside front end that fine coal is blown into spray gun 130.
After transmitting tube 30 is connected with blast tube 120, in the rear end of transmitting tube 30, connect the supply-pipe 42 of inject high pressure nitrogen.Described high pressure nitrogen produces for propelling the impellent of sealed vessel 10.
So, complete for launching after the installation of equipment of sealed vessel 10, by supply-pipe 42, high pressure nitrogen moment is supplied to transmitting tube 30, make it possible to the sealed vessel 10 that transmitting is equipped on transmitting tube 30.From the sealed vessel 10 of transmitting tube 30 transmittings, through blast tube 120, inject convolution district 200, and be arranged in the settled layer 210 of convolution district 200 rear sides.
In addition, sealed vessel 10 in settled layer 210 by the interior thermal initiation of blast furnace 100, thereby remove settled layer 210.
At this, this removal method, before the described sealed vessel 10 of transmitting, under the state that described transmitting tube 30 is connected with blast furnace 100, carries out the internal pressure of transmitting tube 30 to be adjusted to the process consistent with the internal pressure of blast furnace 100.
As shown in Figure 4, when opening when being arranged on the 4th valve 53 on nitrogen gas supply line 41 and driving boosting pump 48, nitrogen is transferred and is filled into filling tank 61 and the pressure pan 44 connecting along supply line 41.In this filling process, the supply valve 50 being arranged on supply line 41 is opened.Second valve 51, the 3rd valve 52, the 5th valve 65 and the 6th valve 66 play booster action, under the state of the normal operation of device, stay open state.Thus, nitrogen flows into and fills tank 61 and pressure pan 44.In addition, the first valve 46 that is arranged on supply-pipe 42 cuts out, thus the outflow of blocking-up nitrogen.And the transmitting pipe valve 64 that is arranged on described transmitting tube 30 is closed equally with the manifold valve 63 that is arranged on arm 62.
Under this state, when being arranged on the manifold valve 63 of arm 62 and being opened, the nitrogen of filling in tank 61 flows into the inside of transmitting tubes 30 by arm 62.Owing to flowing into the nitrogen of transmitting tube 30 inside, the internal pressure of transmitting tube 30 increases.The internal pressure of transmitting tube 30 detects by being arranged on the pressure warning unit 67 of transmitting tube 30.When the internal pressure of transmitting tube 30 increases gradually and be identical with the pressure in the convolution district 200 of blast furnace 100 inside, open the transmitting pipe valve 64 that is arranged on transmitting tube 30.Even if described transmitting pipe valve 64 is opened, the convolution district 200 of blast furnace 100 is communicated with transmitting tube 30, but owing to being under uniform pressure, the internal gas of blast furnace 100 can not flow backwards to transmitting tube 30 yet.After completing the internal pressure adjusting of transmitting tube 30, the nitrogen that manifold valve 63 closes to block by arm 62 moves.
Under the state of internal pressure that has so regulated transmitting tube 30, confirm whether the nitrogen that is filled in pressure pan 44 reaches for launching the sufficient pressure of sealed vessel 10.The pressure of pressure pan 44 can detect by being arranged on the pressure warning unit 54 of pressure pan 44.
After in pressure pan 44 with sufficient Pressure filling nitrogen, open the first valve 46 that is arranged on supply-pipe 42, to launch sealed vessel 10.When the first valve 46 is opened, is filled in high pressure nitrogen in pressure pan 44 and is supplied to transmitting tube 30 by 42 moments of supply-pipe.By being supplied to the high pressure nitrogen of transmitting tube 30, the sealed vessel 10 that is equipped on transmitting tube 30 is released at a high speed, and passes through the front end of transmitting tube 30 to the internal emission of blast furnace 100.
The sealed vessel 10 of launching from transmitting tube 30 clashes and injects the inside in convolution district 200 with the convolution district 200 of blast furnace 100, and is arranged in the settled layer 210 of convolution 200 rear ends, district.
After transmitting sealed vessel 10, the first valve 46 cuts out immediately, to block the internal gas of blast furnace 100, by transmitting tube 30, flows backwards.
Inject the sealed vessel 10 in the settled layer 210 of blast furnace 100 inside, owing to being filled in the gas generating material 20 of sealed vessel 10 inside, under the interior heat effect of blast furnace 100, react, in inside, generate the gas of thousands of times of volumes.
So, under the swelling pressure effect of the gas that described sealed vessel 10 produces in inside, explode.By the expansion energy of gas and the explosive power of sealed vessel 10, in settled layer 210, produce impact energy.Therefore, the settled layer 210 in convolution district 200 destroys and is removed because of these impact energys.
As described above, illustrate exemplary embodiment of the present invention, but those skilled in the art can realize various deformation and other embodiment.This distortion and other embodiment are all considered and are included in appending claims, do not depart from real main idea of the present invention and scope.
Claims (36)
1. a device of removing the unburn settled layer of Blast Furnace Raceway, comprising:
Percussion mechanism, for applying impact energy to being formed on the unburn settled layer of the rear end, convolution district of blast furnace, to destroy described unburn settled layer.
2. the device of the unburn settled layer of removal according to claim 1 Blast Furnace Raceway, wherein,
Described percussion mechanism comprises:
Sealed vessel, for applying impact by blast to described settled layer; And
Gas generating material, is stored in described sealed vessel, for generating gas to ignite sealed vessel.
3. the device of the unburn settled layer of removal according to claim 2 Blast Furnace Raceway, wherein,
Described gas generating material comprises the material that generates expanding gas by chemical reaction.
4. the device of the unburn settled layer of removal according to claim 2 Blast Furnace Raceway, wherein,
Described gas generating material comprises the material expanding by gasifying.
5. the device of the unburn settled layer of removal according to claim 3 Blast Furnace Raceway, wherein,
Described gas generating material for being mixed with the structure of granulated sugar in saltpetre or SODIUMNITRATE.
6. the device of the unburn settled layer of removal according to claim 5 Blast Furnace Raceway, wherein,
Described gas generating material further comprises lam-oil.
7. the device of the unburn settled layer of removal according to claim 5 Blast Furnace Raceway, wherein,
The granulated sugar of the saltpetre that described gas generating material comprises 70～80 % by weight or SODIUMNITRATE and 20～30 % by weight.
8. the device of the unburn settled layer of removal according to claim 6 Blast Furnace Raceway, wherein,
The lam-oil of the granulated sugar of the saltpetre that described gas generating material comprises 60～80 % by weight or SODIUMNITRATE, 20～30 % by weight and 0～10 % by weight.
9. the device of the unburn settled layer of removal according to claim 4 Blast Furnace Raceway, wherein,
Described gas generating material is liquid oxygen.
10. the device of the unburn settled layer of removal according to claim 2 Blast Furnace Raceway, wherein,
Described sealed vessel is by being formed by the material of hot melt solution in blast furnace.
The device of the unburn settled layer of 11. removal according to claim 10 Blast Furnace Raceways, wherein,
Described sealed vessel consists of aluminium, iron or stainless steel.
The device of the unburn settled layer of 12. removal according to claim 2 Blast Furnace Raceways, wherein,
Described sealed vessel is inner for hollow, is formed with for the inlet to inner injecting gas generating material, and can be combined with removably for sealing the structure of the lid of sealed vessel on described inlet in a side.
The device of the unburn settled layer of 13. removal according to claim 2 Blast Furnace Raceways, wherein, described sealed vessel is that a side leading section is sharp-pointed structure.
14. according to the device of the unburn settled layer of the removal Blast Furnace Raceway described in any one in claim 1～13, wherein, further comprises:
E Foerderanlage, for making described percussion mechanism be positioned at unburn settled layer.
The device of the unburn settled layer of 15. removal according to claim 14 Blast Furnace Raceways, wherein,
Described e Foerderanlage comprises:
Transmitting tube, the air port by blast furnace is connected with inner convolution district, and carries described sealed vessel in inside; With
Power supply portion, is connected with described transmitting tube, supplies with for launching the energy of described sealed vessel.
The device of the unburn settled layer of 16. removal according to claim 15 Blast Furnace Raceways, wherein,
Described transmitting tube is the structure being connected with the viewing window that is arranged on the convolution district of blast-furnace tuyere.
The device of the unburn settled layer of 17. removal according to claim 15 Blast Furnace Raceways, wherein,
Described transmitting tube is mounted in the structure that the fine coal that is arranged at blast-furnace tuyere is blown into spray gun.
The device of the unburn settled layer of 18. removal according to claim 15 Blast Furnace Raceways, wherein,
Described Power supply portion comprises:
Push rod, for propelling out described sealed vessel; With
Driving part, for described push rod is moved forward,
Described Power supply portion utilizes push rod to propel out the structure of sealed vessel.
The device of the unburn settled layer of 19. removal according to claim 15 Blast Furnace Raceways, wherein,
Described Power supply portion is to described transmitting tube supply gas, and the structure of launching sealed vessel by gaseous tension.
The device of the unburn settled layer of 20. removal according to claim 19 Blast Furnace Raceways, wherein, described gas is nitrogen or air.
The device of the unburn settled layer of 21. removal according to claim 15 Blast Furnace Raceways, wherein,
Described e Foerderanlage further comprises:
Gas-tight ring, along the inner peripheral surface setting of described transmitting tube, is close to described sealed vessel to keep airtight.
The device of the unburn settled layer of 22. removal according to claim 19 Blast Furnace Raceways, wherein,
Described Power supply portion comprises:
Supply-pipe, is connected with described transmitting tube;
Pressure pan, is connected with described supply-pipe, and inside is filled with gas, to transmitting tube, supplies with high pressure gas;
The first valve, is arranged on described supply-pipe, for opening and closing supply-pipe; With
Boosting pump, be arranged on the tank connected gas supply line of described high pressure on, for to pressure pan blanketing gas.
The device of the unburn settled layer of 23. removal according to claim 22 Blast Furnace Raceways, wherein,
Described Power supply portion further comprises:
Equal splenium, for making the pressure of described transmitting tube consistent with blast furnace internal pressure before transmitting sealed vessel.
The device of the unburn settled layer of 24. removal according to claim 23 Blast Furnace Raceways, wherein,
Described equal splenium comprises:
Fill tank, be connected with described gas supply line, gas is filled into described filling tank;
Arm, is arranged between described filling tank and described transmitting tube;
Manifold valve, is arranged on described arm, for opening and closing arm; With
Transmitting pipe valve, is arranged on described transmitting tube, for opening and closing transmitting tube.
25. 1 kinds of methods of removing the unburn settled layer of Blast Furnace Raceway, comprising:
To being formed on the unburn settled layer of the rear end, convolution district of blast furnace, apply impact energy, to destroy the step of described unburn settled layer.
The method of the unburn settled layer of 26. removal according to claim 25 Blast Furnace Raceways, wherein,
The step of destroying described settled layer comprises:
Preparation step, prepares in inside, to be injected with for generating the sealed vessel of the gas generating material of gas;
Supplying step, carries described sealed vessel to the unburn settled layer of Blast Furnace Raceway; With
Blast step, blasts sealed vessel by heat in blast furnace.
The method of the unburn settled layer of 27. removal according to claim 26 Blast Furnace Raceways, wherein,
Described gas generating material comprises the material that generates expanding gas by chemical reaction.
The method of the unburn settled layer of 28. removal according to claim 26 Blast Furnace Raceways, wherein,
Described gas generating material comprises the material expanding by gasifying.
The method of the unburn settled layer of 29. removal according to claim 27 Blast Furnace Raceways, wherein,
Described gas generating material is mixed with granulated sugar in saltpetre or SODIUMNITRATE.
The method of the unburn settled layer of 30. removal according to claim 29 Blast Furnace Raceways, wherein,
Described gas generating material further comprises lam-oil.
The method of the unburn settled layer of 31. removal according to claim 29 Blast Furnace Raceways, wherein,
The granulated sugar of the saltpetre that described gas generating material comprises 70～80 % by weight or SODIUMNITRATE and 20～30 % by weight.
The method of the unburn settled layer of 32. removal according to claim 30 Blast Furnace Raceways, wherein,
The lam-oil of the granulated sugar of the saltpetre that described gas generating material comprises 60～80 % by weight or SODIUMNITRATE, 20～30 % by weight and 0～10 % by weight.
The method of the unburn settled layer of 33. removal according to claim 28 Blast Furnace Raceways, wherein,
Described gas generating material is liquid oxygen.
34. according to the method for the unburn settled layer of the removal Blast Furnace Raceway described in any one in claim 26～33, wherein,
Described supplying step comprises:
Carry step, on the transmitting tube being connected with inner convolution district in the air port by blast furnace, carry sealed vessel; With
Step of transmitting, supplies with high pressure gas to described transmitting tube, to propel out sealed vessel.
The method of the unburn settled layer of 35. removal according to claim 34 Blast Furnace Raceways, wherein,
Described gas is nitrogen or air.
The method of the unburn settled layer of 36. removal according to claim 34 Blast Furnace Raceways, wherein,
Described supplying step further comprises:
All press step, for before described step of transmitting, the pressure of described transmitting tube is adjusted to consistent with the internal pressure of blast furnace.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0120176 | 2011-11-17 | ||
| KR1020110120176A KR101318385B1 (en) | 2011-11-17 | 2011-11-17 | Device and method for removal bird nest of raceway in blast furnace |
| PCT/KR2012/008250 WO2013073776A1 (en) | 2011-11-17 | 2012-10-11 | Apparatus and method for removing uncombusted deposit layer from combustion zone of blast furnace |
Publications (2)
| Publication Number | Publication Date |
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| CN104053793A true CN104053793A (en) | 2014-09-17 |
| CN104053793B CN104053793B (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201280056785.3A Active CN104053793B (en) | 2011-11-17 | 2012-10-11 | Remove the device and method of the unburned sedimentary of Blast Furnace Raceway |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6055839B2 (en) |
| KR (1) | KR101318385B1 (en) |
| CN (1) | CN104053793B (en) |
| WO (1) | WO2013073776A1 (en) |
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| KR101673174B1 (en) * | 2015-12-23 | 2016-11-07 | 주식회사 포스코 | Device and method for removal bird nest of raceway in blast furnace |
| KR20180001860A (en) * | 2016-06-28 | 2018-01-05 | 주식회사 포스코 | Apparatus for manufacturing molten irons and method for manufacturing molten irons using the same |
| US10691211B2 (en) | 2018-09-28 | 2020-06-23 | Apple Inc. | Button providing force sensing and/or haptic output |
| US10599223B1 (en) | 2018-09-28 | 2020-03-24 | Apple Inc. | Button providing force sensing and/or haptic output |
| IT202000012658A1 (en) * | 2020-05-28 | 2021-11-28 | Bio Protect Group Srl | METHOD AND APPARATUS FOR HOT OR COLD CLEANING OF Slag FROM COMBUSTION USING AN EXPLOSIVE SHOCK WAVE |
| KR102354371B1 (en) * | 2021-04-05 | 2022-01-21 | 금수산업(주) | The burner structure for the incineration for the toxic gas combustion included in the combustion gas |
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- 2012-10-11 CN CN201280056785.3A patent/CN104053793B/en active Active
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- 2012-10-11 JP JP2014542223A patent/JP6055839B2/en active Active
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| CN1148135A (en) * | 1995-10-13 | 1997-04-23 | 张声凯 | Method and internal circulation apparatus for low temp. liquid used as working fluid of engines |
| JPH1112617A (en) * | 1997-06-26 | 1999-01-19 | Nippon Steel Corp | Blast furnace operation |
| US20070137539A1 (en) * | 2005-12-03 | 2007-06-21 | Anton Neumeir | Method for the removal of deposits on the internal walls of industrial furnaces of bunkers |
| KR20090018735A (en) * | 2007-08-18 | 2009-02-23 | 김성경 | Explosives for controlled blasting that noise and vibration is small and flame and after explosion is none, especially nitrate-saccharide explosive |
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| Publication number | Publication date |
|---|---|
| WO2013073776A1 (en) | 2013-05-23 |
| KR101318385B1 (en) | 2013-10-15 |
| CN104053793B (en) | 2016-11-09 |
| KR20130054658A (en) | 2013-05-27 |
| JP6055839B2 (en) | 2016-12-27 |
| JP2015502456A (en) | 2015-01-22 |
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