CN207828339U - A kind of furnace burner combined device of direct gasification reduced iron - Google Patents
A kind of furnace burner combined device of direct gasification reduced iron Download PDFInfo
- Publication number
- CN207828339U CN207828339U CN201820038635.4U CN201820038635U CN207828339U CN 207828339 U CN207828339 U CN 207828339U CN 201820038635 U CN201820038635 U CN 201820038635U CN 207828339 U CN207828339 U CN 207828339U
- Authority
- CN
- China
- Prior art keywords
- burner
- gasification
- tower
- iron ore
- iron
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 217
- 238000002309 gasification Methods 0.000 title claims abstract description 93
- 229910052742 iron Inorganic materials 0.000 claims abstract description 101
- 230000009467 reduction Effects 0.000 claims abstract description 67
- 239000000571 coke Substances 0.000 claims abstract description 41
- 238000010276 construction Methods 0.000 claims abstract description 4
- 239000000446 fuel Substances 0.000 claims description 51
- 239000007789 gas Substances 0.000 claims description 37
- 239000003795 chemical substances by application Substances 0.000 claims description 32
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 28
- 239000001301 oxygen Substances 0.000 claims description 28
- 229910052760 oxygen Inorganic materials 0.000 claims description 28
- 239000007921 spray Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000006722 reduction reaction Methods 0.000 description 67
- 238000006243 chemical reaction Methods 0.000 description 24
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 20
- 230000015572 biosynthetic process Effects 0.000 description 19
- 238000003786 synthesis reaction Methods 0.000 description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 239000003245 coal Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 10
- 238000002156 mixing Methods 0.000 description 10
- 229910002091 carbon monoxide Inorganic materials 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 7
- 239000002893 slag Substances 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 230000002411 adverse Effects 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 239000008246 gaseous mixture Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229960004424 carbon dioxide Drugs 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000003250 coal slurry Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses a kind of furnace burner combined devices of direct gasification reduced iron, including a gasification reduction tower, the tower body of the gasification reduction tower is slim-lined construction, set that there are one igniter burner, a gasification burner tip, one or more iron ore burner and one or more coke at the top of tower body for entrance, the bottom of tower body sets that there are one molten baths；The igniter burner is inclined at an angle near installation gasification burner tip；The gasification burner tip is installed on tower body top center；The iron ore burner is installed on the outside of gasification burner tip and igniter burner.
Description
Technical field
The utility model belongs to ironmaking technology field, and in particular to a kind of furnace burner combined device of direct gasification reduced iron.
Background technology
Steel and iron industry is usually smelted iron using blast furnace, not only needs to be sintered iron-smelting raw material, but also needs to use
A large amount of coke, traditional smelting process lead to the prior art there are technological processes long, and coke consumption is big, and metallization efficiency is low, ring
The problems such as border is seriously polluted, therefore, existing ironmaking technology need to improve.
Under the overall background that national requirements for environmental protection is constantly reinforced, fused reduction iron-smelting technology is not because needing coking and agglomerant
Sequence becomes current main industrialized reduction iron production technology.The technique uses lump coal substitute for coke, but since lump coal is difficult
With liquid permeability of well breathing freely as coke, causing this method to still have, coal consumption amount is big, and degree of metalization is low, and cost occupies
Not the problems such as height does not descend.
In recent ten years, by Coal Clean efficiently utilize for the purpose of modern Coal Gasification Technology grow rapidly at home, gush
Revealing large quantities of advanced Coal Gasification Technologies with independent intellectual property right, achievement is notable in terms of coal high-efficiency clean utilization,
To provide more convenient feasible approach using the technique of coal gasification direct reduced iron.
Utility model content
The purpose of this utility model is to provide a kind of furnace burner combined device of direct gasification reduced iron, it is intended to a certain extent
Defect in the prior art is solved, described device is remarkably improved ironmaking efficiency, and simplification of flowsheet reduces environmental pollution.
Definition
Vaporising fuel described in the utility model is coal dust, coal slurry, coal tar, petroleum coke or other flammable solid granulates, liquid
One or more mixtures of state, fuel gas.
Gasifying agent described in the utility model is the mixed gas of oxygen, air or vapor and oxygen.
Igniter fuel described in the utility model be diesel oil, natural gas or other liquid, fuel gas it is one or more
Mixture.
On the one hand the utility model, provides a kind of furnace burner combined device of direct gasification reduced iron, including a gasification
Restore tower, which is characterized in that the tower body that the gasification restores tower is slim-lined construction, can be reduction reaction raw material iron ore and thick conjunction
Enough residence times are supplied at air lift, are conducive to being sufficiently mixed and reacting for two media, improve reduction rate；The top of tower body is equipped with
One igniter burner, a gasification burner tip, one or more iron ore burners and one or more coke are for entrance, the bottom of tower body
If there are one molten baths；The gasification burner tip is installed on tower body top center, for mixing and carrying out vaporising fuel and gasifying agent
Gasification reaction is obtained using carbon monoxide and hydrogen as the crude synthesis gas of predominant amount；The igniter burner (example at a certain angle
Such as with gasification burner tip be in 5,10,20,30,40,50,60,70,80 degree angles) tilt install gasification burner tip near, provide incendiary source,
Igniter fuel and igniting oxygen, give pre-heating temperature elevation inside reduction tower tower body, for lighting gasification burner tip；The iron ore burner peace
Loaded on the outside of gasification burner tip and igniter burner, provide iron ore with in raw gas carbon monoxide and hydrogen that reduction occurs is anti-
It answers, high-order ferriferous oxide is restored into output FeO and part metals iron in restoring completely in tower.
According to a specific technical solution of the utility model, wherein the gasification burner tip, including it is coaxial from inside to outside
The vaporising fuel channel and gasifying agent channel of arrangement are gone forward side by side for feeding to mix vaporising fuel and gasifying agent in gasification reduction tower
Row gasification reaction is obtained using carbon monoxide and hydrogen as the crude synthesis gas of predominant amount；
Preferably, vaporising fuel channel outlet uses inner shrinking structure.The ejection rate of vaporising fuel can be improved in this way.
Preferably, gasifying agent channel outlet is disposed about swirl-flow devices.In this way, on the one hand the swirl-flow devices can enhance
Contact mixing of the vaporising fuel with gasifying agent, improves the rate of coal gasification reaction, when greatly shortening the reaction generation of crude synthesis gas
Between, on the other hand, the axial adverse current that the crude synthesis gas of swirling motion causes increases the mixing and instead of iron ore and crude synthesis gas
It answers, effectively improves the rate of reduction and ratio of iron ore.
According to a specific technical solution of the utility model, wherein the igniter burner, including it is coaxial from inside to outside
High-energy electric ignition rifle, igniter fuel channel and the igniting oxygen channel of arrangement.
Preferably, igniter fuel channel outlet is that inner shrinking structure and/or igniting oxygen channel outlet are disposed about swirl-flow devices.
In this way, igniter fuel and igniting oxygen after igniter fuel channel outlet and igniting oxygen channel outlet mixing by passing through gaseous mixture of lighting a fire
Outlet sprays into gasification reduction tower, and gaseous mixture catches fire rapidly after encountering the high energy electric spark that high-energy electric ignition rifle is sent out, igniting combustion
The inner shrinking structure and the swirl-flow devices near igniting oxygen channel outlet in material gas channel are conducive to quickly being sufficiently mixed for two media,
Ensure igniter burner quick ignition and stablize to burn, gives pre-heating temperature elevation inside reduction tower tower body, stabilization is provided for gasification burner tip
Reliable incendiary source and ignition energy.
According to a specific technical solution of the utility model, wherein the iron ore burner is single-pass configuration, iron
Ore in sand form feeds the iron ore in channel and sprays into iron ore into gasification reduction tower by iron ore channel outlet.
Preferably, the quantity of iron ore burner is multiple, such as 4-8；And it is circumferential uniformly distributed.The benefit being arranged so is advantageous
In the rate and reaction uniformity that promote reduction reaction in the reduction tower that gasifies.
According to a specific technical solution of the utility model, wherein the gasification burner tip, igniter burner, iron ore are burnt
The outer wall of mouth is equipped with cooling jacket.
Preferably, cooling jacket is by installing one layer of marmon clamp board group additional at sleeve is divided into envelope by clamping plate among an annulus
Inside and outside two layers of channel of enclosed.
In such manner, it is possible to enhance the head side towards the fire anti-yaw damper ability of each burner, extend burner service life.
According to a specific technical solution of the utility model, wherein the weld pool surface covers coke layer, by gasifying
Coke at the top of reduction tower tower body feeds confession and enters；Preferably, coke is 4-8 for the quantity of entrance, and is circumferentially distributed in iron
The outside of mine burner.
In this way, the coke layer provided is more uniform, under the high temperature action in molten bath, can react rapidly, and can be by gas
Change the FeO generated in reduction tower and is reduced further into Fe.
According to a specific technical solution of the utility model, wherein bath be equipped with slag-drip opening and molten iron (melting
Metallic iron) outlet, molten bath upper layer side wall is equipped with back-end ductwork.
The utility model can utilize above-mentioned furnace burner combined device according to below step direct gasification reduced iron：
I) coal gasification is put into gasification reduction tower for entrance by igniter burner, gasification burner tip, iron ore burner and coke
The raw material of reaction and iron reduction reaction；
Ii) make vaporising fuel in gasification reduction tower and gasification reaction occurs at a certain temperature for gasifying agent, generation includes
The high-temperature crude synthesis gas of carbon monoxide and hydrogen；
Iii) above-mentioned high-temperature crude synthesis gas gasification reduction tower in iron ore occur reduction reaction, generate low order FeO with
And part metals iron；
Iv) the reaction was continued under the high temperature action in molten bath with coke layer by above-mentioned low order FeO, is reduced into molten metal completely
Iron (molten iron)；
V) molten iron is exported by molten iron and is discharged after reacting.
According to a specific implementation step of the utility model, wherein
I) further include lighting igniter fuel and igniting oxygen with incendiary source after step, bulk temperature in reduction tower is preheated
To 800-1000 degree, the step of spraying into the vaporising fuel and gasifying agent in reduction tower of then igniting；
Ii) the temperature of gasification reaction described in step about 1200--1500 degree, about 2-6 seconds reaction time, generation
About 1300 degree of high-temperature crude synthesis gas temperature or more；
Iii) high-temperature crude synthesis gas described in step gasification reduction tower in cause air-flow during rotating jet downlink
Reverse backflow, contact with the iron ore sprayed into tower and be sufficiently mixed reaction；
Iv before) above-mentioned low order FeO is continued traveling downwardly along gasification reduction tower and is fallen into molten bath in step, the covering that enters with coke confession
It is contacted in the coke layer of weld pool surface；And/or
V) while molten iron exports discharge by molten iron in step, high-temperature flue gas enters downstream system after being discharged by back-end ductwork
System, slag are discharged by slag-drip opening.
According to a specific implementation step of the utility model, wherein
I) igniter fuel and igniting are sprayed into the reduction tower from the top of the reduction tower by the igniter burner
Oxygen；
By the gasification burner tip from it is described reduction tower top center sprayed into the reduction tower vaporising fuel with
Gasifying agent；
By the iron ore burner oxidation of high-order iron is sprayed into out of the reduction tower the circumferential reduction tower in top four
The iron ore of object；
By the coke out of the reduction tower the circumferential reduction tower in top four coke is sprayed into for entrance；
Ii) incendiary source provided with igniter burner lights the mixed gas of igniter fuel and oxygen of lighting a fire, and the flame of formation will
Bulk temperature is preheated to 800-1000 degree in reduction tower, and quick igniting sprays into the mixed of the vaporising fuel and gasifying agent restored in tower
Object is closed, Quick-gasifying reacts under oxygen debt reducing atmosphere, is generated largely with carbon monoxide and hydrogen in the time of about 2-6s
For 1300 degree or more of high-temperature crude synthesis gas of predominant amount；
Iii) high-temperature crude synthesis gas causes reverse backflow and the spray of air-flow during restoring in tower with rotating jet downlink
Enter the iron ore in tower and contact and be sufficiently mixed reaction, generates low order FeO and part metals iron；
Iv) low order FeO is before reduction tower continues traveling downwardly and falls into molten bath, the coke for being covered in weld pool surface entered with coke confession
Layer of charcoal contacts, and under the high temperature action in molten bath, reaction is completely reduced output molten metal iron to low order FeO rapidly；
V) high-temperature flue gas after reacting is discharged into down-stream system by back-end ductwork, and slag and molten iron are respectively by slag-drip opening and iron
Water out is discharged.
More specific implementation steps are：Igniter burner provides incendiary source, igniter fuel and igniting oxygen, gives reduction tower tower
Internal portion pre-heating temperature elevation, lights gasification burner tip；Gasification burner tip by vaporising fuel channel and gasifying agent channel by vaporising fuel and
Gasifying agent is fed by vaporising fuel channel outlet and gasifying agent channel outlet in gasification reduction tower, the swirl-flow devices in gasifying agent channel
Promote vaporising fuel and gasifying agent to be sufficiently mixed burning and carry out Quick-gasifying reaction, obtained in time of about 2-6s largely with
Carbon monoxide and 1300 degree or more of the high-temperature crude synthesis gas that hydrogen is predominant amount；Column overhead iron ore burner is restored by gasification
Iron ore feed channel by the iron ore of high-order ferriferous oxide by iron ore channel outlet be passed through gasification reduction tower in, iron ore
In dropping process, comes into full contact with and mix with the crude synthesis gas of the axial adverse current of rotating jet initiation in tower, go back output low order completely
FeO and part metals iron；Low order FeO falls into the coke layer in molten bath, under the temperature action in high temperature molten bath, has reacted rapidly
Full reduction output molten metal iron.The coke layer in molten bath feeds confession by gasification reduction column overhead coke and enters, the height after reaction
Warm flue gas is discharged into down-stream system by back-end ductwork.Slag and molten iron are respectively by slag-drip opening and molten iron outlet discharge.
Compared with prior art, the furnace burner combined device of a kind of direct gasification reduced iron described in the utility model, it is excellent
Point is：
Traditional blast furnace iron-making process is improved, new equipment and implementing process no longer need to burn iron-smelting raw material
Knot is needed using coke quantity seldom even without the high temperature one directly generated by the modern Coal Gasification Technology of clean and effective
The raw gas such as carbonoxide and hydrogen carry out the abundant reduction of high price ferriferous oxide in elongated gasification reduction tower, output low order
FeO and part metals iron；The FeO of low order restores output molten metal iron completely by the coke layer in high temperature molten bath.Simplify
Traditional iron-smelting process flow, improves degree of metalization, reduces environmental pollution.
Description of the drawings
Fig. 1 is the structural schematic diagram of the furnace burner combined device of the utility model.
Fig. 2 is the channel design sectional view of the gasification burner tip of the utility model.
Fig. 3 is the channel design sectional view of the igniter burner of the utility model.
Fig. 4 is the channel design sectional view of the iron ore burner of the utility model.
Fig. 5 is the air-flow of material mixing of the furnace burner combined device of the utility model shown in FIG. 1 in gasification reduction tower
.
In figure, 1 is gasification reduction tower, and 2 be igniter burner, and 3 be gasification burner tip, and 4 be iron ore burner, and 5 be coke for entrance,
6 be molten bath, and 7 be back-end ductwork, and 8 be coke layer, and 9 be slag blanket, and 10 be molten iron layer, and 11 be vaporising fuel channel, and 12 be gasifying agent
Channel, 13 be gasifying agent swirl-flow devices, and 14 be gasifying agent channel outlet, and 15 be vaporising fuel channel outlet, and 16 be annulus,
17 be annular clamping plate, and 18 be cooling jacket, and 19 be high-energy electric ignition rifle, and 20 igniter fuel channels, 21 be igniting oxygen channel, and 22 are
Light a fire oxygen swirl-flow devices, 23 for igniting oxygen channel outlet, 24 be igniter fuel channel outlet, 25 for igniting mixed gas outlet, 26
Channel is fed for iron ore, 27 be iron ore channel outlet, 28 slag-drip openings, the outlet of 29 molten iron.
Specific implementation mode
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
A kind of furnace burner combined device of direct gasification reduced iron, as shown in Figure 1, restoring tower 1 including a gasification, gasification is also
The tower body of former tower 1 is slim-lined construction, can provide enough residence times for iron ore and raw gas, be conducive to the abundant of two media
Mixing and reaction, improve reduction rate.2, gasification burner tips 3 of igniter burner, one or more iron there are one being set at the top of tower body
For entrance 5, the bottom of tower body sets that there are one molten baths 6 for mine burner 4 and one or more coke.Gasification burner tip 3 is installed on tower body top
Portion center, igniter burner 2 are inclined at an angle near installation gasification burner tip 3；Iron ore burner 5 is installed on gasification burner tip 3 and point
The outside of mouth 2 is burnt, it is circumferential uniformly distributed if it is multiple.
Fig. 2 is the channel sectional view of gasification burner tip 3 shown in Fig. 1, the gasification burner tip 3, including coaxial from inside to outside
The vaporising fuel channel 11 and gasifying agent channel 12 of arrangement, will by vaporising fuel channel outlet 15 and gasifying agent channel outlet 14
Vaporising fuel and gasifying agent, which are fed, to be mixed in gasification reduction tower 1 and carries out gasification reaction, is obtained based on carbon monoxide and hydrogen
Want the raw gas of content；Preferably, vaporising fuel channel outlet 15 uses inner shrinking structure, gasifying agent channel outlet 14 to be disposed about
Swirl-flow devices 13.In this way, 13 one side of the swirl-flow devices can enhance contact mixing of the vaporising fuel with gasifying agent, coal is improved
The rate of gasification reaction greatly shortens the reaction generated time of crude synthesis gas.On the other hand, the crude synthesis gas of swirling motion causes
Axial adverse current, increase iron ore and the mixing of raw gas and react, effectively improve the rate of reduction and ratio of iron ore.
The area (I) is raw gas jet flow field in Fig. 5, and the area (II) is raw gas circumferential direction adverse current flow field, and the area (III) is iron ore
Jet flow field.
Fig. 3 is the channel sectional view of igniter burner 2 shown in Fig. 1, the igniter burner 2, including coaxial from inside to outside
High-energy electric ignition rifle 19, igniter fuel channel 20 and the igniting oxygen channel 21 of arrangement.Preferably, igniter fuel channel outlet 24 is
Inner shrinking structure, igniting oxygen channel outlet 23 are disposed about igniting oxygen swirl-flow devices 22.In this way, igniter fuel and igniting oxygen pass through a little
Gasification reduction is sprayed by mixed gas outlet 25 of lighting a fire after 23 spout mixing of fiery fuel channel outlet 24 and igniting oxygen channel outlet
In tower, gaseous mixture catches fire rapidly after encountering the high energy electric spark that high-energy electric ignition rifle is sent out, the interior sheepshank in igniter fuel gas channel
Swirl-flow devices 22 near structure and igniting oxygen channel outlet are conducive to quickly being sufficiently mixed for two media, it is ensured that igniter burner is fast
Speed is caught fire and stablizes burning, and pre-heating temperature elevation inside reduction tower tower body is given, for gasification burner tip provide reliable and stable incendiary source with
Ignition energy.
Fig. 4 is the channel sectional view of iron ore burner 4 shown in Fig. 1, the iron ore burner 4, using single-pass configuration, iron
Ore in sand form feeds the iron ore in channel 26 and sprays into iron ore into gasification reduction tower by iron ore channel outlet 27.Preferably,
The quantity of iron ore burner is 4-8, circumferential uniformly distributed.The benefit being arranged so, which has, utilizes reduction reaction in promotion gasification reduction tower
Rate.
Optionally, the outer wall of the gasification burner tip 3, igniter burner 2, iron ore burner 4 is equipped with cooling jacket 18, preferably
, cooling jacket 18 is formed by installing one layer of annular clamping plate 17 among an annulus 16 additional, and clamping plate 17 divides sleeve 16 for closing
Inside and outside two layers of channel of formula.In such manner, it is possible to enhance the head side towards the fire anti-yaw damper ability of each burner, extend burner service life.
The molten bath 6, surface cover coke layer 8, are fed for entrance 5 by the coke at the top of gasification reduction 1 tower body of tower.It is excellent
Choosing, coke is 4-8 for 5 quantity of entrance, is circumferentially distributed in the outside of iron ore burner 4.In this way, the coke layer 8 provided is more
Uniformly, under the high temperature action in molten bath 6, reaction is completely reduced output molten metal iron and can be by gas low order FeO rapidly
Change the FeO generated in reduction tower 1 and is reduced further into Fe.
Bath is equipped with slag-drip opening 28 and molten iron outlet 29, and molten bath upper layer side wall is equipped with back-end ductwork 7.
The operating process of the furnace burner combined device of above-mentioned direct gasification reduced iron, specially：Igniter burner 2 provides igniting
Source, igniter fuel and igniting oxygen, give pre-heating temperature elevation inside reduction tower tower body, light gasification burner tip；Gasification burner tip 3 passes through gas
Change fuel channel 11 and gasifying agent channel 12 by vaporising fuel and gasifying agent by vaporising fuel channel outlet 15 and gasifying agent channel
Outlet 14 is fed in gasification reduction tower 1, and the swirl-flow devices 13 in gasifying agent channel 12 promote fuel and gasifying agent to be sufficiently mixed burning
And Quick-gasifying reaction is carried out, 1300 degree largely using carbon monoxide and hydrogen as predominant amount are obtained in time of about 2-6s
Above high temperature rough gas；The iron ore that 1 tower top iron ore burner 4 of tower is restored by gasification feeds channel 26 by high-order ferriferous oxide
Iron ore by iron ore channel outlet 27 be passed through gasification reduction tower 1 in, in iron ore dropping process, draw with rotating jet in tower
The raw gas of the axial adverse current of hair comes into full contact with mixing, goes back output low order FeO and part metals iron completely；Low order FeO is fallen into
The coke layer 8 in molten bath 6, under the temperature action in high temperature molten bath 6, rapid reaction is completely reduced output molten metal iron.It is molten
The coke layer 8 in pond 6 is fed by gasification reduction 1 tower top coke of tower for entrance 5, and the high-temperature flue gas after reaction is discharged by back-end ductwork 7
Into down-stream system, slag and molten iron are respectively by 29 discharge of slag-drip opening 28 and molten iron outlet.
It can be according to following operating process：
I) igniter fuel and point are sprayed into the reduction tower from the top of the reduction tower 1 by the igniter burner 2
Fiery oxygen；
By the gasification burner tip 3 vaporising fuel is sprayed into the reduction tower from the top center of the reduction tower 1
And gasifying agent；
By the iron ore burner 4 high-order iron oxygen is sprayed into out of the reduction tower 1 the circumferential reduction tower in top four
The iron ore of compound；
By the coke out of the reduction tower 1 the circumferential reduction tower in top four coke is sprayed into for entrance 5；
Ii) incendiary source 19 provided with igniter burner 2 lights the mixed gas of igniter fuel and oxygen of lighting a fire, the flame of formation
Bulk temperature in reduction tower is preheated to 800-1000 degree, quick igniting sprays into the vaporising fuel and gasifying agent restored in tower
Mixture, Quick-gasifying reacts under oxygen debt reducing atmosphere, is generated largely with carbon monoxide and hydrogen in the time of about 2-6s
Gas is 1300 degree or more of high-temperature crude synthesis gas of predominant amount；
Iii) high-temperature crude synthesis gas causes reverse backflow and the spray of air-flow during restoring in tower with rotating jet downlink
Enter the iron ore in tower and contact and be sufficiently mixed reaction, generates low order FeO and part metals iron；
Iv) low order FeO is before reduction tower continues traveling downwardly and falls into molten bath, and 6 surface of molten bath is covered in what coke mouth 5 was fed
Coke layer 8 contacts, and under the high temperature action in molten bath, reaction is completely reduced output molten metal iron to low order FeO rapidly；
V) high-temperature flue gas after reacting is discharged into down-stream system by back-end ductwork 7, and slag and molten iron are respectively by slag-drip opening 28
With 29 discharge of molten iron outlet.
Preferably, the down-stream system can arrange the waste heat recovery apparatus such as reheater, drying tower, prereduction tower, with into
One step improves device efficiency of energy utilization.
It should be noted that a kind of furnace burner combined device of direct gasification reduced iron of the utility model, is substantially carried out
Above-mentioned improvement, other unmentioned functions, component and structure, when needed, may be used can realize accordingly in the prior art
The component and structure of function are implemented.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (12)
1. a kind of furnace burner combined device of direct gasification reduced iron, including a gasification reduction tower, which is characterized in that the gasification
The tower body for restoring tower is slim-lined construction, sets that there are one igniter burner, a gasification burner tip, one or more iron ores at the top of tower body
For entrance, the bottom of tower body sets that there are one molten baths for burner and one or more coke；The gasification burner tip is installed at the top of tower body
Center, the igniter burner, which is inclined at an angle, to be installed near gasification burner tip, and the iron ore burner is installed on gasification
On the outside of burner and igniter burner.
2. furnace burner combined device as described in claim 1, which is characterized in that the gasification burner tip includes coaxial from inside to outside
The vaporising fuel channel and gasifying agent channel of arrangement.
3. furnace burner combined device as claimed in claim 2, which is characterized in that the vaporising fuel channel outlet is used and inside contracted
Structure and/or the gasifying agent channel outlet are disposed about swirl-flow devices.
4. furnace burner combined device as described in claim 1, which is characterized in that the igniter burner includes coaxial from inside to outside
High-energy electric ignition rifle, igniter fuel channel and the igniting oxygen channel of arrangement.
5. furnace burner combined device as claimed in claim 4, which is characterized in that the igniter fuel channel outlet is interior sheepshank
Structure and/or the igniting oxygen channel outlet are disposed about swirl-flow devices.
6. furnace burner combined device as described in claim 1, which is characterized in that the iron ore burner is single-pass configuration, is led to
Iron ore in road sprays into iron ore by iron ore channel outlet into gasification reduction tower.
7. furnace burner combined device as claimed in claim 6, which is characterized in that the quantity of the iron ore burner is multiple and all
To uniformly.
8. such as claim 1-7 any one of them furnace burner combined devices, which is characterized in that the gasification burner tip, point are burnt
Mouth, iron ore burner outer wall be equipped with cooling jacket.
9. furnace burner combined device as claimed in claim 8, which is characterized in that the cooling jacket by an annulus among
One layer of marmon clamp board group is installed additional at sleeve is divided into enclosed inside and outside two layers of channel by clamping plate.
10. furnace burner combined device as described in claim 1, which is characterized in that the weld pool surface covers coke layer, by gas
Change the coke infeed confession at the top of reduction tower tower body to enter.
11. furnace burner combined device as claimed in claim 10, which is characterized in that the coke is 4-8 for the quantity of entrance
It is a, and the circumferential outside for being distributed in iron ore burner.
12. furnace burner combined device as described in claim 1, which is characterized in that bath is equipped with slag-drip opening and molten iron exports,
Molten bath upper layer side wall is equipped with back-end ductwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820038635.4U CN207828339U (en) | 2018-01-10 | 2018-01-10 | A kind of furnace burner combined device of direct gasification reduced iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820038635.4U CN207828339U (en) | 2018-01-10 | 2018-01-10 | A kind of furnace burner combined device of direct gasification reduced iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207828339U true CN207828339U (en) | 2018-09-07 |
Family
ID=63392372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820038635.4U Active CN207828339U (en) | 2018-01-10 | 2018-01-10 | A kind of furnace burner combined device of direct gasification reduced iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207828339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048610A (en) * | 2018-01-10 | 2018-05-18 | 航天长征化学工程股份有限公司 | Burner combination device and method for directly gasifying reduced iron |
-
2018
- 2018-01-10 CN CN201820038635.4U patent/CN207828339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048610A (en) * | 2018-01-10 | 2018-05-18 | 航天长征化学工程股份有限公司 | Burner combination device and method for directly gasifying reduced iron |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4153426A (en) | Synthetic gas production | |
| US6270553B1 (en) | Direct reduction of metal oxide agglomerates | |
| CN105925809B (en) | Series connection Flash Smelting Furnace and smelting process | |
| CN104357611B (en) | A kind of method and apparatus utilizing partition rotary kiln reduction iron production | |
| KR930009968B1 (en) | Iron making by means of a smelting shaft furnace | |
| JPH0137449B2 (en) | ||
| CN101624638B (en) | Gas-burning reducing iron-fining furnace and one-step reducing iron-fining method thereof | |
| CN105755503B (en) | A kind of day dodges stove | |
| HU188685B (en) | Process for production of combustible gas in iron-bath reactor containing carbon monoxid and hydrogen | |
| CA2970818C (en) | Metallurgical furnace for producing metallic alloys | |
| CN111621612A (en) | Converter tail gas waste heat dry distillation coal cracking gas preheating steelmaking system and steelmaking method | |
| CN109897672A (en) | The device and method produced using circulation of tail gas coal gasification | |
| RU2263714C2 (en) | Method and apparatus for producing of cast iron or liquid steel products from iron-ore containing burden | |
| CN207828339U (en) | A kind of furnace burner combined device of direct gasification reduced iron | |
| CN114032347A (en) | Hydrogen shaft furnace iron-making device based on external preheating furnace charge and iron-making method thereof | |
| CN101749931A (en) | Smelting furnace | |
| US2938782A (en) | Method and operation of blast furnaces and metallurgical fuels therefor | |
| US4644557A (en) | Process for the production of calcium carbide and a shaft furnace for carrying out the process | |
| CN115875967A (en) | Rotary kiln system and method for iron ore reduction co-production of reducing gas | |
| CN108048610A (en) | Burner combination device and method for directly gasifying reduced iron | |
| CN204224630U (en) | A kind of device utilizing partition rotary kiln reduction iron production | |
| US3179513A (en) | Blast furnace fuel injection process | |
| CN109628676B (en) | Short-process technology for directly producing pure molten iron | |
| CN1570153A (en) | One and half step melting deacidizing iron-smelting method | |
| KR100259970B1 (en) | Scrap melting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |