CN107151718B - A kind of full oxygen blast furnace device - Google Patents
A kind of full oxygen blast furnace device Download PDFInfo
- Publication number
- CN107151718B CN107151718B CN201710322281.6A CN201710322281A CN107151718B CN 107151718 B CN107151718 B CN 107151718B CN 201710322281 A CN201710322281 A CN 201710322281A CN 107151718 B CN107151718 B CN 107151718B
- Authority
- CN
- China
- Prior art keywords
- gas
- upgrading
- blast furnace
- weight
- furnace
- 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.)
- Expired - Fee Related
Links
- 239000001301 oxygen Substances 0.000 title claims abstract description 76
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 76
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 239000007789 gas Substances 0.000 claims abstract description 158
- 239000003034 coal gas Substances 0.000 claims abstract description 87
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 239000002817 coal dust Substances 0.000 claims abstract description 38
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005422 blasting Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 29
- 230000001936 parietal effect Effects 0.000 claims description 26
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 21
- 239000003063 flame retardant Substances 0.000 claims description 21
- 239000011347 resin Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 20
- 239000011230 binding agent Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 16
- 239000003245 coal Substances 0.000 claims description 14
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 13
- HIGRAKVNKLCVCA-UHFFFAOYSA-N alumine Chemical compound C1=CC=[Al]C=C1 HIGRAKVNKLCVCA-UHFFFAOYSA-N 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 13
- 239000011449 brick Substances 0.000 claims description 12
- 239000003818 cinder Substances 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- WZRRRFSJFQTGGB-UHFFFAOYSA-N 1,3,5-triazinane-2,4,6-trithione Chemical compound S=C1NC(=S)NC(=S)N1 WZRRRFSJFQTGGB-UHFFFAOYSA-N 0.000 claims description 3
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 150000003505 terpenes Chemical class 0.000 claims description 3
- 235000007586 terpenes Nutrition 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 241000790917 Dioxys <bee> Species 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000000571 coke Substances 0.000 abstract description 10
- 239000011819 refractory material Substances 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract description 5
- 238000005457 optimization Methods 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 8
- 229910001868 water Inorganic materials 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/04—Blast furnaces with special refractories
- C21B7/06—Linings for furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The present invention relates to full oxygen blast furnace devices, including total oxygen blast furnace and improving quality of coal gas heating furnace.Total oxygen Top of BF is provided with furnace charge entrance and stock gas outlet, oxygen jet, pci port and lower part upgrading gas nozzle are respectively arranged on cupola well, blast-furnace shaft middle and lower part is provided with top upgrading gas nozzle, oxygen jet is for blasting pure oxygen, pci port is for spraying into coal dust, lower part upgrading gas nozzle and top upgrading gas nozzle for blasting the high temperature upgrading coal gas generated from improving quality of coal gas heating furnace；High furnace outer wall top angle is 85~110 ° at lower part upgrading gas nozzle and lower part upgrading gas nozzle.Being configured by the upgrading gas nozzle that total oxygen blast furnace crucibe is arranged cooperates the refractory material at this to improve, so that reproducibility, concurrent heating and the furnace gas versatility of treated in improving quality of coal gas heating furnace stock gas all realize optimization, and the coke utilization rate of total oxygen blast furnace and coal dust utilization rate is made to have reached optimized design, environment friendly has obtained significantly being promoted.
Description
Technical field
The invention belongs to full oxygen blast furnace device fields, and in particular to a kind of full oxygen blast furnace device.
Background technique
Total oxygen blast furnace has had 8m in Europe and Japan3And 12m3Test blast furnace, at home also in theoretical research rank
Section.Total oxygen blast furnace has many good qualities compared to traditional blast furnace, firstly, total oxygen blast furnace replaces hot wind to blast blast furnace using purity oxygen,
Due to being run under no nitrogen environment, reducibility gas such as CO and H2Concentration increase, increase the reduction potential of coal gas in State of Blast Furnace.
In traditional operation of blast furnace, coal gas contains a large amount of nitrogen in furnace and gas reduction gesture is not high, limit ore reduction rate and
Connect reduction degree；Gas reduction gesture is significantly increased in total oxygen blast furnace, accelerates lumpy zone in blast furnace indirect reduction efficiency and goes back indirectly
Former degree reaches the productivity of total oxygen blast furnace as many as twice of traditional blast furnace.Secondly, coal dust firing during total oxygen pulverized coal injection
Efficiency greatly improves, and allows to using big coal injection technology, more coke can be saved by greatly improving injecting coal quantity, and then be reduced
Ironmaking Coke Ratio, therefore total oxygen blast furnace can be run under higher coal powder injection rate and lower coke ratio.Third, full oxygen blast furnace system
The blast furnace gas of high heating value can externally be provided by uniting, and the calorific value section of traditional blast furnace and the blast furnace gas in total oxygen blast furnace is respectively 2.5
~3.0MJ/Nm3With 5.8~6.6MJ/Nm3.If the stock gas of high heating value in conjunction with chemical-process can further deep exploitation, i.e.,
Stock gas is used to produce chemical products for raw material.At the same time, the realization of total oxygen blast furnace system technique can be mentioned further
The environmental friendliness of high Iron-smelting.
Summary of the invention
It is an object of the invention to propose a kind of full oxygen blast furnace device.
It is realized especially by following technological means:
A kind of full oxygen blast furnace device, including total oxygen blast furnace and improving quality of coal gas heating furnace；
The total oxygen Top of BF is provided with furnace charge entrance and stock gas outlet, and oxygen spray is respectively arranged on cupola well
Mouth, pci port and lower part upgrading gas nozzle are provided with top upgrading gas nozzle, the oxygen spray in blast-furnace shaft middle and lower part
Mouth is for blasting pure oxygen, and pci port is for spraying into coal dust, lower part upgrading gas nozzle and top upgrading gas nozzle for blasting
The high temperature upgrading coal gas generated from improving quality of coal gas heating furnace；Wherein the lower part upgrading gas nozzle and the gas blowout of lower part upgraded coal
High furnace outer wall top angle is α at mouth, and the angle of the α is set as 85~110 °.
The firebrick structure of blast furnace inner wall is set as inside parietal layer and flame retardant coating, institute at the lower part upgrading gas nozzle
State inside parietal layer material composition are as follows: the alumine of 65~69 parts by weight, the alumina silicate of 21~25 parts by weight, 2~5 parts by weight
Titanium dioxide, the calcirm-fluoride of 1.1~1.5 parts by weight, 1~2.2 parts by weight resin binder；The flame retardant coating material composition
Are as follows: the alumine of 60~68 parts by weight, the alumina silicate of 15~18 parts by weight, the calcirm-fluoride of 1.5~1.8 parts by weight, 2~3.5
The resin binder of parts by weight.
The temperature that the high temperature upgrading coal gas enters blast furnace is 900~1200 DEG C.
The improving quality of coal gas heating furnace includes upper portion inner tube, lower outer tubes, reaction chamber and melt cinder room, and the upper portion inner tube is inserted
Enter into lower outer tubes, upper portion inner tube and lower outer tubes are integrally located at reaction chamber top and are connected to reaction chamber, and melt cinder room is located at
The top of upper portion inner tube is arranged in reaction chamber lower part, coal powder entrance, and coal dust is added to improving quality of coal gas by upper portion inner tube top and adds
In hot stove, stock gas entrance and oxygen intake are arranged on the outside of reaction chamber, and low temperature upgrading gas exit is arranged at top
The top of the lower outer tubes in region between upper portion inner tube and lower outer tubes is arranged in the top of inner tube, high temperature upgrading gas exit,
The low temperature upgrading gas exit is connected by pipeline with the stock gas entrance, the high temperature upgrading gas exit respectively with
The lower part upgrading gas nozzle is connected with the top upgrading gas nozzle by pipeline, and the stock gas entrance passes through pipe
Road is connected with stock gas outlet.
CO is generated by oxygen and coal dust imperfect combustion and generates a large amount of heat, the CO in stock gas2In height
It is reacted under warm environment with the C in coal dust and generates CO, so that stock gas is carried out upgrading and heating operation, the upgrading coal gas of generation
Flow up, the coal gas flowed out from upper portion inner tube by with the coal dust that is newly added carry out heat exchange to coal dust carry out preheating and from
Upper portion inner tube is discharged to form low temperature upgrading coal gas, feelings of the upgrading coal gas flowed out between upper portion inner tube and lower outer tubes in high temperature
It is expelled directly out to form high temperature upgrading coal gas under condition, the high temperature upgrading gas holder includes CO, CO2、H2And H2O, and four volume ratios
For CO:CO2: H2: H2O=(50~75): (1.5~6.5): (15~35): (0.5~5).
Pure oxygen, coal dust and high temperature upgraded coal gas are injected in total oxygen blast furnace, ore and coke, stock gas is added in furnace roof
It is passed into improving quality of coal gas heating furnace by pipeline, by the CO in stock gas2It is converted into CO, forms high temperature upgrading coal gas, so
It is injected to again in total oxygen blast furnace again afterwards.
The stock gas includes CO, CO2、H2And H2O, and four volume ratios are CO:CO2: H2O=(35~49): (26
~35): (7~17): (6~14)
Preferably, the temperature that the high temperature upgrading coal gas enters blast furnace is 900 when the angle of the α is set as 85~95 °
~1100 DEG C；When the angle of the α is set as 95~110 °, the temperature that the high temperature upgrading coal gas enters blast furnace is 1100~1200
℃。
Preferably, inside parietal layer material composition are as follows: the alumine of 66~68 parts by weight, 23~25 parts by weight
The resin-bonding of alumina silicate, the titanium dioxide of 2~3 parts by weight, the calcirm-fluoride of 1.2~1.5 parts by weight, 1.5~2.2 parts by weight
Agent.
Preferably, the flame retardant coating material composition are as follows: the silicon of the alumine of 62~65 parts by weight, 16~18 parts by weight
Sour aluminium, the calcirm-fluoride of 1.5~1.6 parts by weight, 2.5~3.5 parts by weight resin binder, the resin binder be natural rubber
The mixture of glue and trithiocyanuric acid, ethylene glycol monomethyl ether and terpene resin.
Preferably, the firebrick structure of blast furnace inner wall is set as inside parietal layer and resistance at the lower part upgrading gas nozzle
Fire bed, wherein inside parietal layer be arranged in inside, flame retardant coating be arranged in the outside of the inside parietal layer and with blast furnace external refractory brick
Engagement.
Effect of the invention is that:
1, what is be passed through due to oxygen blast furnace is pure oxygen, considerably less (its nitrogen content of nitrogen content in blast furnace internal gas
Can ignore), the cupola well coal gas gas flow risen under the process conditions from bottom house cupola well position is reduced, thus by under blast furnace
The heat that portion takes top to is greatly reduced, therefore easily causes the defect of blast furnace " upper cold and lower heat ", and then will cause blast furnace
The situations such as the indirect reduction of furnace charge top not can be carried out, lower part direct-reduction development and furnace charge downlink are unsmooth occur.By by total oxygen
Gas nozzle is respectively set in blast-furnace shaft and barrel section, for the stock gas being blown after upgrading heating, can solve complete
The defect of oxygen blast furnace " upper cold and lower heat ", the high temperature upgrading gas nozzle especially on shaft, the coal gas of penetrating can make blast furnace
The heat of shaft middle and upper part crude fuel is supplemented, while developing upper blast furnace lump zone indirect reduction, reduces cupola well directly also
Former degree, and avoid blast furnace and have some setbacks the generation of situation.Lower part upgrading gas nozzle at cupola well is routinely expected being arranged and oxygen
Gas jets are set as horizontal as coal nozzle.And since the coal gas that upgrading gas nozzle in lower part sprays is taken into account and reacts
The effect of heating and partial reduction agent.The present invention is to set non-level for lower part heating upgrading gas nozzle, so that upgrading
Heating gas gas is inside blast furnace, nozzle is formed about air whirl, to carry out during coal gas reaction to heat
The mixing of part is matched by the way that specific specific nozzle angle and setting heating upgrading gas temperature is arranged, so that into blast furnace
The formation of internal gas vortex is more in line with the liveness index of cupola well during blast furnace ironmaking, and makes the heat in the region
More balanced stabilization.
2, since the nozzle of lower part upgrading heating gas is non-horizontal setting, this is just needed to the refractory material near nozzle
It improves, so that its not only fire-resistant degree with higher, and surge can also be resisted.By to blast furnace internal refractory
Material improves, so that at the position of gas flow at high rates, the spoilage of refractory material is greatly lowered, so that this is resistance to
Fiery material is more in line with specific nozzle setting form, the different settings of refractory material double-layer structure and two layers of specific material
The cooperation of (double-layer structure can improve the impact resistance of high-temperature gas, moreover it is possible to guarantee resistance to fire intensity) and nozzle direction, so that both
It can guarantee the equilibrium of blast furnace internal pressure, region heat balance, moreover it is possible to reduce the frequency of maintenance of blast furnace fireproof material.
3, since the stock gas of oxygen blast furnace is mainly carbon monoxide, carbon dioxide, hydrogen and water, by by furnace roof coal
Gas is by reacting (key reaction CO with " C " in improving quality of coal gas heating furnace2+ C-CO and C+O-CO), it will be in stock gas
Carbon dioxide conversion is carbon monoxide, and generates the heat that carbon monoxide generates by coal dust and oxygen imperfect combustion and carry out
Heat supplement, to form high temperature reductive gas, which is passed into height again stock gas increased quality
In furnace, reducing agent not only can be used as, but also the carrier of heat offer and heat supplement is provided, thus further by State of Blast Furnace
Top coal gas is more fully utilized.The coal gas risen in improving quality of coal gas heating furnace from middle part with the coal dust of addition due to carrying out
Heat exchanges and preheats coal dust, and gas temperature can reduce (this part gas volume is relatively fewer), which can be used for chemical industry
Synthesis, heating stove heating or gas turbine power generation, especially in gas turbine power generation capacity usage ratio than traditional State of Blast Furnace top coal
Gas generating efficiency is high by 5% or more.
Detailed description of the invention
Fig. 1 is full oxygen blast furnace device overall structure diagram of the present invention.
Fig. 2 is the structural schematic diagram of improving quality of coal gas heating furnace of the present invention.
Wherein: 11- shaft, 12- cupola well, 13- pci port, 14- oxygen jet, the top 15- upgrading gas nozzle, 16- mine
Stone and coke inlet, 17- stock gas export, the lower part 18- upgrading gas nozzle, 2- improving quality of coal gas heating furnace, in the top 21-
Pipe, 22- lower outer tubes, 23- reaction chamber, 24- melt cinder room, 25- oxygen intake, 26- stock gas entrance, 27- low temperature upgraded coal
Gas outlet, 28- coal dust material inlet, 29- high temperature upgrading gas exit, α-lower part upgrading gas nozzle and high furnace outer wall top
Angle.
Specific embodiment
Embodiment 1
A kind of full oxygen blast furnace device, including total oxygen blast furnace and coal gas constitution heating furnace；
The total oxygen Top of BF is provided with furnace charge entrance and stock gas outlet, and oxygen spray is respectively arranged on cupola well
Mouth, pci port and lower part upgrading gas nozzle are provided with top upgrading gas nozzle, the oxygen spray in blast-furnace shaft middle and lower part
Mouth is for blasting pure oxygen, and pci port is for spraying into coal dust, lower part upgrading gas nozzle and top upgrading gas nozzle for blasting
The high temperature upgrading coal gas generated from improving quality of coal gas heating furnace；Wherein the lower part upgrading gas nozzle and the gas blowout of lower part upgraded coal
High furnace outer wall top angle is α at mouth, and the angle of the α is set as 88 °.
The firebrick structure of blast furnace inner wall is set as inside parietal layer and flame retardant coating, institute at the lower part upgrading gas nozzle
State inside parietal layer material composition are as follows: the alumine of 66.5 parts by weight, the alumina silicate of 23.2 parts by weight, 2.5 parts by weight dioxy
Change titanium, the calcirm-fluoride of 1.3 parts by weight, 2.0 parts by weight resin binder；The flame retardant coating material composition are as follows: 62 parts by weight
Alumine, the alumina silicate of 16 parts by weight, the calcirm-fluoride of 1.6 parts by weight, 2.3 parts by weight resin binder.
The temperature that the high temperature upgrading coal gas enters blast furnace is 960 DEG C.
The improving quality of coal gas heating furnace includes upper portion inner tube, lower outer tubes, reaction chamber and melt cinder room, and the upper portion inner tube is inserted
Enter into lower outer tubes, upper portion inner tube and lower outer tubes are integrally located at reaction chamber top and are connected to reaction chamber, and melt cinder room is located at
The top of upper portion inner tube is arranged in reaction chamber lower part, coal powder entrance, and coal dust is added to improving quality of coal gas by upper portion inner tube top and adds
In hot stove, stock gas entrance and oxygen intake are arranged on the outside of reaction chamber, and low temperature upgrading gas exit is arranged at top
The top of the lower outer tubes in region between upper portion inner tube and lower outer tubes is arranged in the top of inner tube, high temperature upgrading gas exit,
The low temperature upgrading gas exit is connected by pipeline with the stock gas entrance, the high temperature upgrading gas exit respectively with
The lower part upgrading gas nozzle is connected with the top upgrading gas nozzle by pipeline, and the stock gas entrance passes through pipe
Road is connected with stock gas outlet.
CO is generated by oxygen and coal dust imperfect combustion and generates a large amount of heat, the CO in stock gas2In height
It is reacted under warm environment with the C in coal dust and generates CO, so that stock gas is carried out upgrading and heating operation, the upgrading coal gas of generation
Flow up, the coal gas flowed out from upper portion inner tube by with the coal dust that is newly added carry out heat exchange to coal dust carry out preheating and from
Upper portion inner tube is discharged to form low temperature upgrading coal gas, feelings of the upgrading coal gas flowed out between upper portion inner tube and lower outer tubes in high temperature
It is expelled directly out to form high temperature upgrading coal gas under condition.
Pure oxygen, coal dust and high temperature upgraded coal gas are injected in total oxygen blast furnace, ore and coke, stock gas is added in furnace roof
It is passed into improving quality of coal gas heating furnace by pipeline, by the CO in stock gas2It is converted into CO, forms high temperature upgrading coal gas, so
It is injected to again in total oxygen blast furnace again afterwards.
The stock gas includes CO, CO2、H2And H2O, and four volume ratios are CO:CO2: H2O=(35~49): (26
~35): (7~17): (6~14)
The firebrick structure of blast furnace inner wall is set as inside parietal layer and flame retardant coating at the lower part upgrading gas nozzle, wherein
Inside parietal layer is arranged in inside, and flame retardant coating is arranged in the outside of the inside parietal layer and engages with blast furnace external refractory brick.
Comparative example 1
Other parameters are all identical with embodiment 1, and only by its middle and lower part, upgraded coal gas jets are set as horizontal direction, and
Refractory brick identical with blast furnace crucibe other parts is set by the refractory brick of nozzle periphery, and is not provided with two layers of different material
Matter is set as the identical refractory brick of material.After operation of blast furnace, coke demand is higher by 1.3% than embodiment 1, coal dust straying quatity ratio
Embodiment 1 is higher by 0.9%, and nozzle periphery refractory brick damage thickness is higher by 3.2cm than embodiment 1.
Comparative example 2
Other parameters are all identical with embodiment 1, and only set the refractory brick of nozzle periphery to and the other portions of blast furnace crucibe
Divide identical refractory brick.After operation of blast furnace, nozzle periphery refractory brick damages thickness and is higher by 5.1cm than embodiment 1.
Embodiment 2
As shown in Figure 1:
A kind of full oxygen blast furnace device, including total oxygen blast furnace and coal gas constitution heating furnace；
The total oxygen Top of BF is provided with furnace charge entrance and stock gas outlet, and oxygen spray is respectively arranged on cupola well
Mouth, pci port and lower part upgrading gas nozzle are provided with top upgrading gas nozzle, the oxygen spray in blast-furnace shaft middle and lower part
Mouth is for blasting pure oxygen, and pci port is for spraying into coal dust, lower part upgrading gas nozzle and top upgrading gas nozzle for blasting
The high temperature upgrading coal gas generated from improving quality of coal gas heating furnace；Wherein the lower part upgrading gas nozzle and the gas blowout of lower part upgraded coal
High furnace outer wall top angle is α at mouth, and the angle of the α is set as 102 °.
The firebrick structure of blast furnace inner wall is set as inside parietal layer and flame retardant coating, institute at the lower part upgrading gas nozzle
State inside parietal layer material composition are as follows: the alumine of 68 parts by weight, the alumina silicate of 23.6 parts by weight, 3.9 parts by weight titanium dioxide
Titanium, the calcirm-fluoride of 1.38 parts by weight, 2.1 parts by weight resin binder；The flame retardant coating material composition are as follows: the height of 66 parts by weight
Bauxite, the alumina silicate of 16.5 parts by weight, the calcirm-fluoride of 1.65 parts by weight, 3.2 parts by weight resin binder.
The resin binder is the mixture of natural rubber and trithiocyanuric acid, ethylene glycol monomethyl ether and terpene resin.
The temperature that the high temperature upgrading coal gas enters blast furnace is 1141 DEG C.
The improving quality of coal gas heating furnace includes upper portion inner tube, lower outer tubes, reaction chamber and melt cinder room, and the upper portion inner tube is inserted
Enter into lower outer tubes, upper portion inner tube and lower outer tubes are integrally located at reaction chamber top and are connected to reaction chamber, and melt cinder room is located at
The top of upper portion inner tube is arranged in reaction chamber lower part, coal powder entrance, and coal dust is added to improving quality of coal gas by upper portion inner tube top and adds
In hot stove, stock gas entrance and oxygen intake are arranged on the outside of reaction chamber, and low temperature upgrading gas exit is arranged at top
The top of the lower outer tubes in region between upper portion inner tube and lower outer tubes is arranged in the top of inner tube, high temperature upgrading gas exit,
The low temperature upgrading gas exit is connected by pipeline with the stock gas entrance, the high temperature upgrading gas exit respectively with
The lower part upgrading gas nozzle is connected with the top upgrading gas nozzle by pipeline, and the stock gas entrance passes through pipe
Road is connected with stock gas outlet.
CO is generated by oxygen and coal dust imperfect combustion and generates a large amount of heat, the CO in stock gas2In height
It is reacted under warm environment with the C in coal dust and generates CO, so that stock gas is carried out upgrading and heating operation, the upgrading coal gas of generation
Flow up, the coal gas flowed out from upper portion inner tube by with the coal dust that is newly added carry out heat exchange to coal dust carry out preheating and from
Upper portion inner tube is discharged to form low temperature upgrading coal gas, feelings of the upgrading coal gas flowed out between upper portion inner tube and lower outer tubes in high temperature
It is expelled directly out to form high temperature upgrading coal gas under condition.
Pure oxygen, coal dust and high temperature upgraded coal gas are injected in total oxygen blast furnace, ore and coke, stock gas is added in furnace roof
It is passed into improving quality of coal gas heating furnace by pipeline, by the CO in stock gas2It is converted into CO, forms high temperature upgrading coal gas, so
It is injected to again in total oxygen blast furnace again afterwards.
The firebrick structure of blast furnace inner wall is set as inside parietal layer and flame retardant coating at the lower part upgrading gas nozzle, wherein
Inside parietal layer is arranged in inside, and flame retardant coating is arranged in the outside of the inside parietal layer and engages with blast furnace external refractory brick.
Comparative example 2
Other settings of this comparative example are same as Example 2, the difference is that 80 ° are set by α, 700 hours blast furnaces
Direct motion rate is than embodiment 2 low 2.1%.
Embodiment 3
A kind of full oxygen blast furnace device, including total oxygen blast furnace and coal gas constitution heating furnace；
The total oxygen Top of BF is provided with furnace charge entrance and stock gas outlet, and oxygen spray is respectively arranged on cupola well
Mouth, pci port and lower part upgrading gas nozzle are provided with top upgrading gas nozzle, the oxygen spray in blast-furnace shaft middle and lower part
Mouth is for blasting pure oxygen, and pci port is for spraying into coal dust, lower part upgrading gas nozzle and top upgrading gas nozzle for blasting
The high temperature upgrading coal gas generated from improving quality of coal gas heating furnace；Wherein the lower part upgrading gas nozzle and the gas blowout of lower part upgraded coal
High furnace outer wall top angle is α at mouth, and the angle of the α is set as 98 °.
The firebrick structure of blast furnace inner wall is set as inside parietal layer and flame retardant coating, institute at the lower part upgrading gas nozzle
State inside parietal layer material composition are as follows: the alumine of 65.8 parts by weight, the alumina silicate of 22 parts by weight, 2.3 parts by weight titanium dioxide
Titanium, the calcirm-fluoride of 1.2 parts by weight, 1.2 parts by weight resin binder；The flame retardant coating material composition are as follows: 63.8 parts by weight
Alumine, the alumina silicate of 16.9 parts by weight, the calcirm-fluoride of 1.66 parts by weight, 2.8 parts by weight resin binder.The resin
Adhesive is commercially available strong bonding resin binder.
The temperature that the high temperature upgrading coal gas enters blast furnace is 1056 DEG C.
The improving quality of coal gas heating furnace includes upper portion inner tube, lower outer tubes, reaction chamber and melt cinder room, and the upper portion inner tube is inserted
Enter into lower outer tubes, upper portion inner tube and lower outer tubes are integrally located at reaction chamber top and are connected to reaction chamber, and melt cinder room is located at
The top of upper portion inner tube is arranged in reaction chamber lower part, coal powder entrance, and coal dust is added to improving quality of coal gas by upper portion inner tube top and adds
In hot stove, stock gas entrance and oxygen intake are arranged on the outside of reaction chamber, and low temperature upgrading gas exit is arranged at top
The top of the lower outer tubes in region between upper portion inner tube and lower outer tubes is arranged in the top of inner tube, high temperature upgrading gas exit,
The low temperature upgrading gas exit is connected by pipeline with the stock gas entrance, the high temperature upgrading gas exit respectively with
The lower part upgrading gas nozzle is connected with the top upgrading gas nozzle by pipeline, and the stock gas entrance passes through pipe
Road is connected with stock gas outlet.
CO is generated by oxygen and coal dust imperfect combustion and generates a large amount of heat, the CO in stock gas2In height
It is reacted under warm environment with the C in coal dust and generates CO, so that stock gas is carried out upgrading and heating operation, the upgrading coal gas of generation
Flow up, the coal gas flowed out from upper portion inner tube by with the coal dust that is newly added carry out heat exchange to coal dust carry out preheating and from
Upper portion inner tube is discharged to form low temperature upgrading coal gas, feelings of the upgrading coal gas flowed out between upper portion inner tube and lower outer tubes in high temperature
It is expelled directly out to form high temperature upgrading coal gas under condition.
Pure oxygen, coal dust and high temperature upgraded coal gas are injected in total oxygen blast furnace, ore and coke, stock gas is added in furnace roof
It is passed into improving quality of coal gas heating furnace by pipeline, by the CO in stock gas2It is converted into CO, forms high temperature upgrading coal gas, so
It is injected to again in total oxygen blast furnace again afterwards.
The firebrick structure of blast furnace inner wall is set as inside parietal layer and flame retardant coating at the lower part upgrading gas nozzle, wherein
Inside parietal layer is arranged in inside, and flame retardant coating is arranged in the outside of the inside parietal layer and engages with blast furnace external refractory brick.
Claims (5)
1. a kind of full oxygen blast furnace device, which is characterized in that including total oxygen blast furnace and improving quality of coal gas heating furnace；
The total oxygen Top of BF be provided with furnace charge entrance and stock gas outlet, be respectively arranged on cupola well oxygen jet,
Pci port and lower part upgrading gas nozzle are provided with top upgrading gas nozzle, the oxygen jet in blast-furnace shaft middle and lower part
For blasting pure oxygen, pci port for spray into coal dust, lower part upgrading gas nozzle and top upgrading gas nozzle for blast from
The high temperature upgrading coal gas generated in improving quality of coal gas heating furnace；Wherein the lower part upgrading gas nozzle and lower part upgrading gas nozzle
Locating high furnace outer wall top angle is α, and the angle of the α is set as 85~110 °；
The firebrick structure of blast furnace inner wall is set as inside parietal layer and flame retardant coating at the lower part upgrading gas nozzle, described interior
Side wall layer material composition are as follows: the alumine of 65~69 parts by weight, the alumina silicate of 21~25 parts by weight, 2~5 parts by weight dioxy
Change titanium, the calcirm-fluoride of 1.1~1.5 parts by weight, 1~2.2 parts by weight resin binder；The flame retardant coating material composition are as follows: 60
The alumine of~68 parts by weight, the alumina silicate of 15~18 parts by weight, the calcirm-fluoride of 1.5~1.8 parts by weight, 2~3.5 parts by weight
Resin binder；
The temperature that the high temperature upgrading coal gas enters blast furnace is 900~1200 DEG C；
The improving quality of coal gas heating furnace includes upper portion inner tube, lower outer tubes, reaction chamber and melt cinder room, and the upper portion inner tube is inserted into
In lower outer tubes, upper portion inner tube and lower outer tubes are integrally located at reaction chamber top and are connected to reaction chamber, and melt cinder room is located at reaction
The top of upper portion inner tube is arranged in chamber lower part, coal powder entrance, and coal dust is added to improving quality of coal gas heating furnace by upper portion inner tube top
In, stock gas entrance and oxygen intake are arranged on the outside of reaction chamber, and low temperature upgrading gas exit is arranged at upper portion inner tube
Top, the top of the lower outer tubes in region between upper portion inner tube and lower outer tubes is arranged in high temperature upgrading gas exit, described
Low temperature upgrading gas exit is connected by pipeline with the stock gas entrance, the high temperature upgrading gas exit respectively with it is described
Upgrading gas nozzle in lower part is connected with the top upgrading gas nozzle by pipeline, the stock gas entrance by pipeline with
The stock gas outlet is connected.
2. full oxygen blast furnace device according to claim 1, which is characterized in that the angle of the α is set as 85~95 °
When, the temperature that the high temperature upgrading coal gas enters blast furnace is 900~1100 DEG C；It is described when the angle of the α is set as 95~110 °
The temperature that high temperature upgrading coal gas enters blast furnace is 1100~1200 DEG C.
3. full oxygen blast furnace device according to claim 1, which is characterized in that the inside parietal layer material composition are as follows:
The alumine of 66~68 parts by weight, the alumina silicate of 23~25 parts by weight, the titanium dioxide of 2~3 parts by weight, 1.2~1.5 weight
Part calcirm-fluoride, 1.5~2.2 parts by weight resin binder.
4. full oxygen blast furnace device according to claim 1, which is characterized in that the flame retardant coating material composition are as follows: 62
The alumine of~65 parts by weight, the alumina silicate of 16~18 parts by weight, the calcirm-fluoride of 1.5~1.6 parts by weight, 2.5~3.5 weight
Part resin binder, the resin binder is the mixed of natural rubber and trithiocyanuric acid, ethylene glycol monomethyl ether and terpene resin
Close object.
5. full oxygen blast furnace device according to claim 1, which is characterized in that high at the lower part upgrading gas nozzle
The firebrick structure of furnace inner wall is set as inside parietal layer and flame retardant coating, wherein inside parietal layer setting, in inside, flame retardant coating setting exists
The outside of the inside parietal layer is simultaneously engaged with blast furnace external refractory brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322281.6A CN107151718B (en) | 2017-05-09 | 2017-05-09 | A kind of full oxygen blast furnace device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322281.6A CN107151718B (en) | 2017-05-09 | 2017-05-09 | A kind of full oxygen blast furnace device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107151718A CN107151718A (en) | 2017-09-12 |
| CN107151718B true CN107151718B (en) | 2018-12-14 |
Family
ID=59792784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710322281.6A Expired - Fee Related CN107151718B (en) | 2017-05-09 | 2017-05-09 | A kind of full oxygen blast furnace device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107151718B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108220514A (en) * | 2018-01-31 | 2018-06-29 | 北京科技大学 | A kind of hydrogen-rich oxygen blast furnace iron-making method |
| CN108676950B (en) * | 2018-06-11 | 2020-02-18 | 北京科技大学 | Smelting equipment for reducing magnetic metal based on coal gas and smelting process thereof |
| CN108611457B (en) * | 2018-06-11 | 2019-12-10 | 北京科技大学 | smelting equipment for reducing magnetic metal by coal gas and smelting process thereof |
| CN110714106B (en) * | 2019-10-30 | 2020-12-29 | 沈忠凡 | Blast furnace optimization smelting method of high-titanium type vanadium titano-magnetite |
| CN113718074A (en) * | 2021-09-03 | 2021-11-30 | 中冶赛迪工程技术股份有限公司 | Low-carbon blast furnace iron-making method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519703A (en) * | 2008-02-26 | 2009-09-02 | 宝山钢铁股份有限公司 | Low-coke-ratio blast furnace ironmaking technique |
| CN102888475A (en) * | 2012-09-28 | 2013-01-23 | 中冶南方工程技术有限公司 | Full-oxygen humidifying and blasting device and technology for blast furnace |
| CN104131122A (en) * | 2014-07-25 | 2014-11-05 | 北京科技大学 | High-temperature gas injection-based iron-making technology |
| CN104540928A (en) * | 2012-07-03 | 2015-04-22 | 伊尔技术有限公司 | Method and system for operating a blast furnace with top-gas recycle and a fired tubular heater |
-
2017
- 2017-05-09 CN CN201710322281.6A patent/CN107151718B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519703A (en) * | 2008-02-26 | 2009-09-02 | 宝山钢铁股份有限公司 | Low-coke-ratio blast furnace ironmaking technique |
| CN104540928A (en) * | 2012-07-03 | 2015-04-22 | 伊尔技术有限公司 | Method and system for operating a blast furnace with top-gas recycle and a fired tubular heater |
| CN102888475A (en) * | 2012-09-28 | 2013-01-23 | 中冶南方工程技术有限公司 | Full-oxygen humidifying and blasting device and technology for blast furnace |
| CN104131122A (en) * | 2014-07-25 | 2014-11-05 | 北京科技大学 | High-temperature gas injection-based iron-making technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107151718A (en) | 2017-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107151718B (en) | A kind of full oxygen blast furnace device | |
| CN102037145B (en) | Method for melting raw iron while recirculating blast furnace gas by adding hydrocarbons | |
| CN106834573B (en) | A kind of full oxygen blast furnace method | |
| CN101555532A (en) | Oxygen blast furnace iron-making method based on cold-bonded carbonic pellet | |
| CN105734190B (en) | Oxygen blast furnace and gas-based shaft kiln Joint Production system and combine production method | |
| CN104131122A (en) | High-temperature gas injection-based iron-making technology | |
| CN106282455A (en) | A kind of blast furnace hydrogen-rich smelting process efficiently utilizing metallurgic waste gas | |
| CN103512351A (en) | Sintering device for metallized sinter and production method thereof | |
| CN102758048A (en) | Joint production process of crude fuel hot charging and total heat oxygen blast furnace and vertical furnace | |
| CN104894322A (en) | Multilayer slag smelting reduction ironmaking method and apparatus thereof | |
| CN102586527A (en) | Novel hydrogen-carbon smelting reduction ironmaking process | |
| CN114686633A (en) | Method for pre-heat exchanging hydrogen by utilizing direct reduction iron furnace top gas | |
| CN108220514A (en) | A kind of hydrogen-rich oxygen blast furnace iron-making method | |
| CN105586452B (en) | Oxygen blast furnace and gas-based shaft kiln Joint Production system and combine production method | |
| CN203284438U (en) | Magnetizing roasting reducing atmosphere preparation device and iron mine flash magnetizing roasting system | |
| CN107652997A (en) | A kind of powdery semi-coke preparation facilities and technique | |
| CN102888475A (en) | Full-oxygen humidifying and blasting device and technology for blast furnace | |
| CN107447068A (en) | A kind of method and system of coal pyrolysis gas reduction schreyerite | |
| CN102409128B (en) | Device and process for making gas and reducing iron through coal derived fusion melting bed | |
| CN100451133C (en) | Method and apparatus for producing directly reduced iron with coke oven gas | |
| CN114410351B (en) | Method for producing gas by using dry pulverized coal at dome of gasification furnace of European smelting furnace | |
| CN101892340A (en) | Method for preparing metallic iron by direction reduction in shaft furnace | |
| CN205839049U (en) | Oxygen blast furnace and gas-based shaft kiln Joint Production system | |
| TW202330942A (en) | Method for operating a shaft furnace plant | |
| CN101528948A (en) | Method and device for producing molten material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |