CN107151718A - A kind of full oxygen blast furnace device - Google Patents
A kind of full oxygen blast furnace device Download PDFInfo
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- CN107151718A CN107151718A CN201710322281.6A CN201710322281A CN107151718A CN 107151718 A CN107151718 A CN 107151718A CN 201710322281 A CN201710322281 A CN 201710322281A CN 107151718 A CN107151718 A CN 107151718A
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- 239000001301 oxygen Substances 0.000 title claims abstract description 77
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 77
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 239000007789 gas Substances 0.000 claims abstract description 156
- 239000003034 coal gas Substances 0.000 claims abstract description 92
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 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 12
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 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
- 239000000463 material Substances 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 20
- 229920005989 resin Polymers 0.000 claims description 20
- 239000011230 binding agent Substances 0.000 claims description 17
- 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
- 239000000203 mixture Substances 0.000 claims description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003245 coal Substances 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 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
- 241000790917 Dioxys <bee> Species 0.000 claims description 2
- 238000005422 blasting Methods 0.000 claims 2
- 238000005507 spraying Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 14
- 239000000571 coke Substances 0.000 abstract description 10
- 239000011819 refractory material Substances 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
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 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
- 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
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000000034 method Methods 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
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 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
- 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
- 230000000630 rising effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003786 synthesis reaction 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)
- Coating By Spraying Or Casting (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The present invention relates to full oxygen blast furnace device, 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 bottom upgrading jet for gas are respectively arranged with cupola well, upgrading jet for gas in top is provided with blast-furnace shaft middle and lower part, oxygen jet is used to blast pure oxygen, pci port is used to spray into coal dust, and bottom upgrading jet for gas and top upgrading jet for gas are used to blast the high temperature upgrading coal gas produced from improving quality of coal gas heating furnace；Upgrading jet for gas in bottom is 85~110 ° with high furnace outer wall top angle at bottom upgrading jet for gas.Refractory material in this place is coordinated to be improved by being configured to the upgrading jet for gas that total oxygen blast furnace crucibe is set, so that reproducibility, concurrent heating and the furnace gas versatility of the stock gas after being handled in improving quality of coal gas heating furnace all realize optimization, and cause the coke utilization rate and coal dust utilization rate of total oxygen blast furnace to reach optimized design, environment friendly has obtained significantly being lifted.
Description
Technical field
The invention belongs to full oxygen blast furnace device field, and in particular to a kind of full oxygen blast furnace device.
Background technology
Total oxygen blast furnace has had 8m in Europe and Japan3And 12m3Experiment blast furnace, at home also in theoretical research rank
Section.Total oxygen blast furnace has many good qualities compared to traditional blast furnace, first, and total oxygen blast furnace blasts blast furnace using purity oxygen instead of hot blast,
Due to without operation, reducibility gas such as CO and H under nitrogen environment2Concentration increase, add 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 stove and gas reduction gesture is not high, limit ore reduction speed 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, makes the productivity ratio of total oxygen blast furnace reach as many as twice of traditional blast furnace.Secondly, coal dust firing during total oxygen pulverized coal injection
Efficiency is greatly improved so that can use big coal injection technology, and more coke can be saved by greatly improving injecting coal quantity, and then be reduced
Ironmaking Coke Ratio, therefore total oxygen blast furnace can run under higher coal powder injection rate and lower coke ratio.3rd, full oxygen blast furnace system
The calorific value interval that system can externally provide the blast furnace gas in the blast furnace gas of high heating value, traditional blast furnace and total oxygen blast furnace is respectively 2.5
~3.0MJ/Nm3With 5.8~6.6MJ/Nm3.If the stock gas of high heating value with reference to 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 carried further
The environmental friendliness of high Iron-smelting.
The content of the invention
It is an object of the invention to propose a kind of full oxygen blast furnace device.
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 with cupola well
Mouth, pci port and bottom upgrading jet for gas, top upgrading jet for gas, the oxygen spray are provided with blast-furnace shaft middle and lower part
Mouth is used to blast pure oxygen, and pci port is used to spray into coal dust, and bottom upgrading jet for gas and top upgrading jet for gas are used to blast
The high temperature upgrading coal gas produced from improving quality of coal gas heating furnace；Wherein described bottom upgrading jet for gas and bottom upgraded coal gas blowout
High furnace outer wall top angle is α at mouth, and the angle of the α is set to 85~110 °.
The firebrick structure of blast furnace inwall is set to inner side parietal layer and flame retardant coating, institute at the bottom upgrading jet for gas
Stating inner side parietal layer material composition is：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, the resin binder of 1~2.2 parts by weight；The flame retardant coating material composition
For：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 connected with reaction chamber, and melt cinder room is located at
Reaction chamber bottom, coal powder entrance is arranged on the top of upper portion inner tube, and coal dust is added to improving quality of coal gas by upper portion inner tube top and added
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 inner tube, high temperature upgrading gas exit is arranged on the top of the lower outer tubes in region between upper portion inner tube and lower outer tubes,
The low temperature upgrading gas exit is connected by pipeline with the stock gas entrance, the high temperature upgrading gas exit respectively with
The bottom upgrading jet for gas is connected with the top upgrading jet for gas by pipeline, and the stock gas entrance passes through pipe
Road is connected with stock gas outlet.
CO is produced by oxygen and coal dust imperfect combustion and the CO in substantial amounts of heat, stock gas is produced2In height
With the C reaction generation CO in coal dust under warm environment, so that stock gas is carried out into 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 newly adds carry out heat exchange coal dust is preheated and from
Upper portion inner tube discharges 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 forming 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, furnace roof adds ore and coke, stock gas
It is passed into by pipeline in improving quality of coal gas heating furnace, by the CO in stock gas2CO is converted into, high temperature upgrading coal gas is formed, so
It is injected in total oxygen blast furnace again 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, when the angle of the α is set to 85~95 °, the temperature that the high temperature upgrading coal gas enters blast furnace is 900
~1100 DEG C；When the angle of the α is set to 95~110 °, the temperature that the high temperature upgrading coal gas enters blast furnace is 1100~1200
℃。
Preferably, the inner side parietal layer material composition is：The alumine of 66~68 parts by weight, 23~25 parts by weight
Alumina silicate, the titanium dioxide of 2~3 parts by weight, the calcirm-fluoride of 1.2~1.5 parts by weight, the resin-bonding of 1.5~2.2 parts by weight
Agent.
Preferably, the flame retardant coating material composition is：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, the resin binder of 2.5~3.5 parts by weight, the resin binder are natural rubber
The mixture of glue and trithiocyanuric acid, ethylene glycol monomethyl ether and terpene resin.
Preferably, the firebrick structure of blast furnace inwall is set to inner side parietal layer and resistance at the bottom upgrading jet for gas
Fire bed, wherein inner side parietal layer be arranged on inner side, flame retardant coating be arranged on the outside of the inner side 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 considerably less (its nitrogen content of nitrogen content in pure oxygen, therefore blast furnace internal gas
Can ignore), the cupola well coal gas gas flow risen from bottom house cupola well position under the process conditions is reduced, so that 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 can cause blast furnace
The indirect reduction of furnace charge top can not be carried out, bottom direct-reduction development and the descending situation such as not smooth of furnace charge occur.By by total oxygen
Blast-furnace shaft and barrel section set jet for gas respectively, 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 jet for gas especially on shaft, the coal gas of penetrating can cause blast furnace
The heat of shaft middle and upper part crude fuel is supplemented, while developing upper blast furnace lump zone indirect reduction, reduction cupola well is directly also
Former degree, and avoid blast furnace and have some setbacks the generation of situation.Bottom upgrading jet for gas at cupola well is routinely expected setting and oxygen
Gas jets are set to horizontal as coal nozzle.And because the coal gas that upgrading jet for gas in bottom sprays is taken into account and reacts
Heating and the effect of partial reduction agent.The present invention be by bottom heating upgrading jet for gas be set to it is non-level so that upgrading
Heating gas gas is inside blast furnace, nozzle is formed about air whirl, so as to during coal gas reacts, be carried out to heat
Local mixing, by setting specific specific nozzle angle and setting heating upgrading gas temperature to be engaged so that enter blast furnace
The formation of internal gas vortex more conforms to the liveness index of cupola well during blast furnace ironmaking, and causes the heat in the region
More equalization stable.
2, because the nozzle of bottom upgrading heating gas is set for non-horizontal, this is accomplished by the refractory material near nozzle
It is improved so that it not only has higher fire-resistant degree, and can also resist surge.By to blast furnace internal refractory
Material is improved 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 more conforms to the specific nozzle and sets form, the different settings of refractory material double-decker and two layers of specific material
(double-decker can improve the impact resistance of high-temperature gas, moreover it is possible to ensure resistance to fire intensity) and the cooperation of nozzle direction so that both
It can guarantee that 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, because the stock gas of oxygen blast furnace is mainly carbon monoxide, carbon dioxide, hydrogen and water, by by furnace roof coal
Gas is by the way that (key reaction is CO with " C " reaction in improving quality of coal gas heating furnace2+ C-CO and C+O-CO), by stock gas
Carbon dioxide conversion is carbon monoxide, and generates the heat progress that carbon monoxide is produced by coal dust and oxygen imperfect combustion
Heat supplement, so as to by stock gas increased quality, form high temperature reductive gas, the reducibility gas is passed into height again
In stove, both the carrier with heat supplement can be provided as heat again, so that further by State of Blast Furnace as reducing agent
Top coal gas is more fully utilized.Coal gas in improving quality of coal gas heating furnace from middle part rising with the coal dust of addition due to carrying out
Heat exchange and preheat coal dust, gas temperature can reduce (this part coal gas amount is relatively fewer), the part coal gas can be used for chemical industry
Synthesis, heating stove heat or gas turbine power generation, especially in gas turbine power generation capacity usage ratio than traditional blast furnace roof coal
Gas generating efficiency is high by more than 5%.
Brief description of the drawings
Fig. 1 is full oxygen blast furnace device overall structure diagram of the present invention.
Fig. 2 is the structural representation of improving quality of coal gas heating furnace of the present invention.
Wherein：11- shafts, 12- cupola wells, 13- pci ports, 14- oxygen jets, 15- tops upgrading jet for gas, 16- ore deposits
In stone and coke inlet, the outlet of 17- stock gases, 18- bottoms upgrading jet for gas, 2- improving quality of coal gas heating furnaces, 21- tops
Pipe, 22- lower outer tubes, 23- reaction chambers, 24- melt cinders room, 25- oxygen intakes, 26- stock gas entrances, 27- low temperature upgraded coals
Gas is exported, 28- coal dust material inlets, 29- high temperature upgrading gas exits, α-bottom upgrading jet for gas and high furnace outer wall top
Angle.
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 with cupola well
Mouth, pci port and bottom upgrading jet for gas, top upgrading jet for gas, the oxygen spray are provided with blast-furnace shaft middle and lower part
Mouth is used to blast pure oxygen, and pci port is used to spray into coal dust, and bottom upgrading jet for gas and top upgrading jet for gas are used to blast
The high temperature upgrading coal gas produced from improving quality of coal gas heating furnace；Wherein described bottom upgrading jet for gas and bottom upgraded coal gas blowout
High furnace outer wall top angle is α at mouth, and the angle of the α is set to 88 °.
The firebrick structure of blast furnace inwall is set to inner side parietal layer and flame retardant coating, institute at the bottom upgrading jet for gas
Stating inner side parietal layer material composition is：The alumine of 66.5 parts by weight, the alumina silicate of 23.2 parts by weight, the dioxy of 2.5 parts by weight
Change titanium, the calcirm-fluoride of 1.3 parts by weight, the resin binder of 2.0 parts by weight；The flame retardant coating material is constituted：62 parts by weight
Alumine, the alumina silicate of 16 parts by weight, the calcirm-fluoride of 1.6 parts by weight, the resin binder of 2.3 parts by weight.
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 connected with reaction chamber, and melt cinder room is located at
Reaction chamber bottom, coal powder entrance is arranged on the top of upper portion inner tube, and coal dust is added to improving quality of coal gas by upper portion inner tube top and added
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 inner tube, high temperature upgrading gas exit is arranged on the top of the lower outer tubes in region between upper portion inner tube and lower outer tubes,
The low temperature upgrading gas exit is connected by pipeline with the stock gas entrance, the high temperature upgrading gas exit respectively with
The bottom upgrading jet for gas is connected with the top upgrading jet for gas by pipeline, and the stock gas entrance passes through pipe
Road is connected with stock gas outlet.
CO is produced by oxygen and coal dust imperfect combustion and the CO in substantial amounts of heat, stock gas is produced2In height
With the C reaction generation CO in coal dust under warm environment, so that stock gas is carried out into 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 newly adds carry out heat exchange coal dust is preheated and from
Upper portion inner tube discharges 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 forming high temperature upgrading coal gas under condition.
Pure oxygen, coal dust and high temperature upgraded coal gas are injected in total oxygen blast furnace, furnace roof adds ore and coke, stock gas
It is passed into by pipeline in improving quality of coal gas heating furnace, by the CO in stock gas2CO is converted into, high temperature upgrading coal gas is formed, so
It is injected in total oxygen blast furnace again 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 inwall is set to inner side parietal layer and flame retardant coating at the bottom upgrading jet for gas, wherein
Inner side parietal layer is arranged on inner side, and flame retardant coating is arranged on the outside of the inner side parietal layer and engaged with blast furnace external refractory brick.
Comparative example 1
Other specification is all identical with embodiment 1, and its middle and lower part upgraded coal gas jets only is set into horizontal direction, and
By the refractory brick of nozzle periphery be set to blast furnace crucibe other parts identical refractory brick, and be not provided with two layers of different material
Matter, is set to material identical refractory brick.After operation of blast furnace, coke demand is higher by 1.3%, coal dust straying quatity ratio than embodiment 1
Embodiment 1 is higher by 0.9%, and nozzle periphery refractory brick damages thickness ratio embodiment 1 and is higher by 3.2cm.
Comparative example 2
Other specification is all identical with embodiment 1, and is only set to the refractory brick of nozzle periphery and the other portions of blast furnace crucibe
Divide identical refractory brick.After operation of blast furnace, nozzle periphery refractory brick damages thickness ratio embodiment 1 and is higher by 5.1cm.
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 with cupola well
Mouth, pci port and bottom upgrading jet for gas, top upgrading jet for gas, the oxygen spray are provided with blast-furnace shaft middle and lower part
Mouth is used to blast pure oxygen, and pci port is used to spray into coal dust, and bottom upgrading jet for gas and top upgrading jet for gas are used to blast
The high temperature upgrading coal gas produced from improving quality of coal gas heating furnace；Wherein described bottom upgrading jet for gas and bottom upgraded coal gas blowout
High furnace outer wall top angle is α at mouth, and the angle of the α is set to 102 °.
The firebrick structure of blast furnace inwall is set to inner side parietal layer and flame retardant coating, institute at the bottom upgrading jet for gas
Stating inner side parietal layer material composition is：The alumine of 68 parts by weight, the alumina silicate of 23.6 parts by weight, the titanium dioxide of 3.9 parts by weight
Titanium, the calcirm-fluoride of 1.38 parts by weight, the resin binder of 2.1 parts by weight；The flame retardant coating material is constituted：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, the resin binder of 3.2 parts by weight.
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 connected with reaction chamber, and melt cinder room is located at
Reaction chamber bottom, coal powder entrance is arranged on the top of upper portion inner tube, and coal dust is added to improving quality of coal gas by upper portion inner tube top and added
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 inner tube, high temperature upgrading gas exit is arranged on the top of the lower outer tubes in region between upper portion inner tube and lower outer tubes,
The low temperature upgrading gas exit is connected by pipeline with the stock gas entrance, the high temperature upgrading gas exit respectively with
The bottom upgrading jet for gas is connected with the top upgrading jet for gas by pipeline, and the stock gas entrance passes through pipe
Road is connected with stock gas outlet.
CO is produced by oxygen and coal dust imperfect combustion and the CO in substantial amounts of heat, stock gas is produced2In height
With the C reaction generation CO in coal dust under warm environment, so that stock gas is carried out into 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 newly adds carry out heat exchange coal dust is preheated and from
Upper portion inner tube discharges 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 forming high temperature upgrading coal gas under condition.
Pure oxygen, coal dust and high temperature upgraded coal gas are injected in total oxygen blast furnace, furnace roof adds ore and coke, stock gas
It is passed into by pipeline in improving quality of coal gas heating furnace, by the CO in stock gas2CO is converted into, high temperature upgrading coal gas is formed, so
It is injected in total oxygen blast furnace again again afterwards.
The firebrick structure of blast furnace inwall is set to inner side parietal layer and flame retardant coating at the bottom upgrading jet for gas, wherein
Inner side parietal layer is arranged on inner side, and flame retardant coating is arranged on the outside of the inner side parietal layer and engaged with blast furnace external refractory brick.
Comparative example 2
Other settings of this comparative example are same as Example 2, and difference is α being set to 80 °, the blast furnace of 700 hours
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 with cupola well
Mouth, pci port and bottom upgrading jet for gas, top upgrading jet for gas, the oxygen spray are provided with blast-furnace shaft middle and lower part
Mouth is used to blast pure oxygen, and pci port is used to spray into coal dust, and bottom upgrading jet for gas and top upgrading jet for gas are used to blast
The high temperature upgrading coal gas produced from improving quality of coal gas heating furnace；Wherein described bottom upgrading jet for gas and bottom upgraded coal gas blowout
High furnace outer wall top angle is α at mouth, and the angle of the α is set to 98 °.
The firebrick structure of blast furnace inwall is set to inner side parietal layer and flame retardant coating, institute at the bottom upgrading jet for gas
Stating inner side parietal layer material composition is：The alumine of 65.8 parts by weight, the alumina silicate of 22 parts by weight, the titanium dioxide of 2.3 parts by weight
Titanium, the calcirm-fluoride of 1.2 parts by weight, the resin binder of 1.2 parts by weight；The flame retardant coating material is constituted：63.8 parts by weight
Alumine, the alumina silicate of 16.9 parts by weight, the calcirm-fluoride of 1.66 parts by weight, the resin binder of 2.8 parts by weight.The resin
Adhesive is strong bonding resin binder purchased in market.
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 connected with reaction chamber, and melt cinder room is located at
Reaction chamber bottom, coal powder entrance is arranged on the top of upper portion inner tube, and coal dust is added to improving quality of coal gas by upper portion inner tube top and added
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 inner tube, high temperature upgrading gas exit is arranged on the top of the lower outer tubes in region between upper portion inner tube and lower outer tubes,
The low temperature upgrading gas exit is connected by pipeline with the stock gas entrance, the high temperature upgrading gas exit respectively with
The bottom upgrading jet for gas is connected with the top upgrading jet for gas by pipeline, and the stock gas entrance passes through pipe
Road is connected with stock gas outlet.
CO is produced by oxygen and coal dust imperfect combustion and the CO in substantial amounts of heat, stock gas is produced2In height
With the C reaction generation CO in coal dust under warm environment, so that stock gas is carried out into 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 newly adds carry out heat exchange coal dust is preheated and from
Upper portion inner tube discharges 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 forming high temperature upgrading coal gas under condition.
Pure oxygen, coal dust and high temperature upgraded coal gas are injected in total oxygen blast furnace, furnace roof adds ore and coke, stock gas
It is passed into by pipeline in improving quality of coal gas heating furnace, by the CO in stock gas2CO is converted into, high temperature upgrading coal gas is formed, so
It is injected in total oxygen blast furnace again again afterwards.
The firebrick structure of blast furnace inwall is set to inner side parietal layer and flame retardant coating at the bottom upgrading jet for gas, wherein
Inner side parietal layer is arranged on inner side, and flame retardant coating is arranged on the outside of the inner side parietal layer and engaged with blast furnace external refractory brick.
Claims (5)
1. a kind of full oxygen blast furnace device, it is characterised in that including total oxygen blast furnace and coal gas constitution heating furnace；
The total oxygen Top of BF be provided with furnace charge entrance and stock gas outlet, be respectively arranged with cupola well oxygen jet,
Pci port and bottom upgrading jet for gas, top upgrading jet for gas, the oxygen jet are provided with blast-furnace shaft middle and lower part
For blasting pure oxygen, pci port is used to spraying into coal dust, bottom upgrading jet for gas and top upgrading jet for gas be used to blasting from
The high temperature upgrading coal gas produced in improving quality of coal gas heating furnace；Wherein described bottom upgrading jet for gas and bottom upgrading jet for gas
It is α to locate high furnace outer wall top angle, and the angle of the α is set to 85~110 °；
The firebrick structure of blast furnace inwall is set to inner side parietal layer and flame retardant coating at the bottom upgrading jet for gas, described interior
Side wall layer material is constituted：The alumine of 65~69 parts by weight, the alumina silicate of 21~25 parts by weight, the dioxy of 2~5 parts by weight
Change titanium, the calcirm-fluoride of 1.1~1.5 parts by weight, the resin binder of 1~2.2 parts by weight；The flame retardant coating material is constituted：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 connected with reaction chamber, and melt cinder room is located at reaction
Chamber bottom, coal powder entrance is arranged on the top of upper portion inner tube, 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, high temperature upgrading gas exit is arranged on the top of the lower outer tubes in region between upper portion inner tube and lower outer tubes, 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 jet for gas in bottom is connected with the top upgrading jet for gas 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, it is characterised in that the angle of the α is set to 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 to 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, it is characterised in that the inner side parietal layer material, which is constituted, is：
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
The calcirm-fluoride, the resin binder of 1.5~2.2 parts by weight of part.
4. the full oxygen blast furnace device according to any one of claim 1, it is characterised in that the flame retardant coating material composition
For：The alumine of 62~65 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~
The resin binder of 3.5 parts by weight, the resin binder is natural rubber and trithiocyanuric acid, ethylene glycol monomethyl ether and terpenes tree
The mixture of fat.
5. the full oxygen blast furnace device according to any one of claim 1, it is characterised in that the bottom upgraded coal gas blowout
The firebrick structure of blast furnace inwall is set to inner side parietal layer and flame retardant coating at mouth, wherein inner side parietal layer is arranged on inner side, flame retardant coating
It is arranged on the outside of the inner side parietal layer and is engaged with blast furnace external refractory brick.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN108611457A (en) * | 2018-06-11 | 2018-10-02 | 北京科技大学 | A kind of smelting equipment and its smelting technology of the coal gas reduction containing magnetic metal |
| CN108676950A (en) * | 2018-06-11 | 2018-10-19 | 北京科技大学 | It is a kind of that smelting equipment and its smelting technology containing magnetic metal are restored based on coal gas |
| CN110714106A (en) * | 2019-10-30 | 2020-01-21 | 沈忠凡 | Blast furnace optimization smelting method of high-titanium type vanadium titano-magnetite |
| WO2023029816A1 (en) * | 2021-09-03 | 2023-03-09 | 中冶赛迪工程技术股份有限公司 | Low carbon blast furnace ironmaking method |
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| 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 |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108611457A (en) * | 2018-06-11 | 2018-10-02 | 北京科技大学 | A kind of smelting equipment and its smelting technology of the coal gas reduction containing magnetic metal |
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| WO2023029816A1 (en) * | 2021-09-03 | 2023-03-09 | 中冶赛迪工程技术股份有限公司 | Low carbon blast furnace ironmaking method |
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