CN110042181A - A method of reply State of Blast Furnace labour later period thermic load impact - Google Patents
A method of reply State of Blast Furnace labour later period thermic load impact Download PDFInfo
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- CN110042181A CN110042181A CN201910395194.2A CN201910395194A CN110042181A CN 110042181 A CN110042181 A CN 110042181A CN 201910395194 A CN201910395194 A CN 201910395194A CN 110042181 A CN110042181 A CN 110042181A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 236
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 239000000498 cooling water Substances 0.000 claims abstract description 53
- 239000013589 supplement Substances 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 241001269238 Data Species 0.000 claims description 14
- 238000003909 pattern recognition Methods 0.000 claims description 13
- 229910001018 Cast iron Inorganic materials 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 240000002853 Nelumbo nucifera Species 0.000 claims description 4
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 4
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 6
- 238000005457 optimization Methods 0.000 abstract description 5
- 230000003116 impacting effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- 206010033425 Pain in extremity Diseases 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Blast Furnaces (AREA)
Abstract
The invention discloses a kind of methods of reply State of Blast Furnace labour later period thermic load impact, it is characterised in that it is comprising steps of dropping stockline, furnace Pi Kaikong, installation cooling column group, connection cooling column group, the instantaneous regulating device of installation cooling water, establishment model recognition unit, establishing data characteristics assessment unit, issue handling, knowledge base update；The present invention passes through optimization cooling column installation site, Installation Modes, the cooling column group that multiple cooling columns are constituted disposably is installed in cooling wall breakage region in the furnace labour later period, double cooling capacity, cooling capacity is provided to overcome single cooling column cooling capacity insufficient, prevent the problems in furnace skin stress collection, installation supplement water regulating valve door on the water inlet pipe of cooling column group, Local cooling water flow is increased when facing the impact of biggish thermic load, the response big heat temporary impact of bottom house avoids heat-dense from impacting furnace skin, avoid the rubescent of furnace skin, cracking, ensure the stable smooth operation of blast furnace.
Description
Technical field
The present invention relates to a kind of steel smelting equipments, relate in particular to a kind of blast furnace, high more particularly to a kind of reply
The method that furnace furnace uses as a servant the impact of later period thermic load.
Background technique
Blast furnace is often faced with a large amount of scaling loss of cooling wall, yield decline, gas leak as smelting equipment, in the furnace labour later period
Serious problem.Cooling wall is made of cooling wall ontology and castingin in internal cooling water pipe.And blast fumance is embedded in steel
The long-time maintenance of a link in integrated complex, a large blast furnace can cause great impact to entire iron and steel enterprise, especially
It is that long-term unplanned property maintenance is even more meeting severe jamming enterprise operation, is lost huge.
Currently, general more effective method is to install effective cooling equipment in blast furnace damaged part as early as possible --- it is cooling
Column.And the mounting means of this cooling column is often both without planning or not considering the efficiency of installation, just only where it is damaged just
It installs there, the blast furnace of badly broken most multipotency installs several hundred a cooling columns sometimes, substantially " treats the head when the head aches, foot pain is cured
The passive mode of foot ".
Document " Gansu [J] metallurgy is practiced in Li Jichang, Zhang Yun, Wang Qingxue cooling column technology transfer and independent development,
2012,34 (6): 1-6. " is listed is mounted with that a cooling column more than 200, these cooling columns are batchs by batch and stage by stage in generation furnace labour altogether
Installation, both do not planned, did not also plan, it is random because installing, the decline of part furnace shell intensity is caused, furnace Pi Fahong, is deformed,
Gas leakage is serious.Document " optimization [J] of Ju Qinzhang 3 BF in Baosteel furnace body cooling system is smelted iron, 2004,23 (2):
The characteristic of cooling column is listed in 1-4. ", which also uses part cooling column in the furnace labour later period, and cooling column was installed
Also without optimization is considered in journey, installation, because of furnace skin intensity decline caused by installing reason, is equally caused in furnace than more random
Large Area Cracking, the deformation of furnace skin are resulted in when interior thermic load acute variation.Document " Chen Kunnan, " copper cooling column using effect tune
Look into and analyze ", ironmaking, in May, 2003 " in have sufficient embodiment, the document analyzes horse steel 2500m3Blast furnace is cooling using copper
Column repairs the situation of damaged cooling wall, blowing out post analysis discovery, if the cooling wall residuum under cooling wall breakage serious situation
It has been do not existed that, copper cooling column is installed at this time, only individually isolated twelve Earthly Branches are on furnace shell for copper cooling column, due to cooling system large area
Breakage contacts furnace shell and furnace charge directly, and the resistance to material poured into had both been difficult to wrap copper cooling column well, it is also difficult in furnace shell
Inner surface forms one layer of protective layer being connected with other copper cooling column grouting materials, and the furnace shell inner surface of protective layer is not because of production period
Between Gas Flow, heat produced by melting slag iron and furnace charge, it is difficult to pass through the export of the cooling water of copper cooling column, coal gas of high temperature institute
The heat of carrying has still been transmitted on furnace shell, does not check the rubescent of furnace shell still, in this case due to slag crust shakiness
It is fixed, so that being exposed to the pole in furnace charge, Gas Flow and under melting the abrasion of slag iron, washing away of a part of copper cooling column in furnace charge
Flexible deformation and damage.
Above-mentioned document all based on blast furnace breakage when avoid furnace shell damaged and keep certain cooling capacity, cooling column installation
Usually passively with the passive installation of the breakage of furnace body cooling wall, installation number, position are installed simultaneously there is no optimization in advance
On cooling column be a kind of makeshift, cooling capacity is generally less than original cooling system, and random due to installation
Property, furnace skin position of opening is chaotic, and furnace skin stress is concentrated, and often results in furnace skin cracking and expands, and huge hidden danger is caused to production, in height
Working of a furnace fluctuation is encountered in furnace production, the fluctuation of big heat impact is powerlessly resisted in the region for installing cooling column at all, is objectively also subtracted
The effect of cooling column is lacked, cooling column life thereby results in the frequent damping down of blast furnace also just at 6~10 months or so at present, produces
Low efficiency, consumption are high.
Stockline, also known as stockline depth, when referring to that the charge level in blast furnace is reduced to the degree to be fed, charge level is away under distributing device
The height of edge.
Summary of the invention
The object of the present invention is to provide after a kind of reply State of Blast Furnace labour for the restoration of lower stack of blast furnace, bosh, furnace bosh
The method of phase thermic load impact.
The present invention, which adopts the following technical scheme that, realizes its goal of the invention, a kind of reply State of Blast Furnace labour later period thermic load punching
The method hit, it the following steps are included:
(1) drop stockline: in the case where cooling wall is a large amount of damaged, it is cold to be reduced to remaining by the cooling wall wall body of cleaning residual for stockline
But wall absolute altitude hereinafter, in favor of cooling column of blast furnace installation, construction；
(2) furnace Pi Kaikong: the characteristics of according to damaged area, with drilling machine aperture on the furnace skin around damaged area, aperture depth
It is subject to and touches furnace charge, i.e., aperture depth touches subject to furnace charge after cooling column should be made to install；
(3) cooling column group is installed: for the cooling effect for giving full play to each cooling column, in each damaged cooling wall ontology (cooling of blast furnace
Wall is made of muti-piece cooling wall ontology) cooling water pipe position at install cooling column group；
(4) connect cooling column group: the original cooling water pipe of cooling wall ontology is sequentially connected to cooling column group, it is damaged cold with replacement
But the refrigerating function of wall is connected on each cooling column (and cooling column group) positioned at same row on a water pipe；
(5) the instantaneous regulating device of cooling water is installed: in the water supplying pipe inlet of each cooling column group installation connection supplement water branch pipe, being mended
Water-filling branch pipe is equipped with force (forcing) pump, supplement water regulating valve door, to cope with the impact of high heat load；
(6) establishment model recognition unit: hot face heat punching inside the galvanic couple measurement blast furnace for utilizing each cooling column in cooling column group included
Situation is hit, i.e. measurement temperature, and save data (in oracle database), pattern-recognition is carried out according to real time data, is judged
The temperature change feature of cooling column group；A measurement sample is constituted with the measurement data of the galvanic couple of every 4 cooling columns, every 5 minutes
A data are measured, carry out pattern-recognition with 3 months real time datas；Big heat is coped with using pattern class building simultaneously to impact
Knowledge base, by heat impact degree grade separation formed 25 quasi-mode recognition units；
(7) data characteristics assessment unit is established: the data of the cooling column group of measurement in every 5 minutes, with the data and pattern-recognition list
Mode data in member is matched, and current processing grade is found, and treatment Countermeasures are determined from knowledge base；
(8) issue handling: when the galvanic couple that cooling column carries detects that blast furnace heat load region faces the impact of biggish thermic load,
I.e. when detecting in 1 cooling column group has the galvanic couple temperature of 1 or 2 cooling column to reach established standards, water is supplemented by starting
Supplement water regulating valve door, force (forcing) pump on branch pipe increase cooling column Local cooling water flow, to cope with heat impact, avoid heat
The intensive impact furnace skin of amount avoids rubescent, the cracking of furnace skin；
After instantaneous thermal shock is calmed down, force (forcing) pump is closed, supplement water regulating valve door is turned down, by water supply adjustment and recovery to just
The water supply level of normal cooling wall；
(9) knowledge base update: every mistake 1 month by method and step (1)~(6) knowledge base is updated, enrich, improve current knowledge
Library.
Step of the present invention (3) in, a cooling water pipe length about 2m in one piece of cooling wall ontology, a cooling column diameter is
25 ㎝, disposably installation is equipped with 4 included thermometric galvanic couples in a cooling water pipe length range in the cooling wall ontology
Cooling column；Contain 4 cooling water pipes in one piece of cooling wall ontology, the spacing of adjacent two cooling water pipe is 20 ㎝, the cooling
Column group include on the cooling wall 4~16 cooling columns (if installation is equipped with 4 cooling columns on monolithic cooling wall ontology, according to
Secondary 2~4 pieces of cooling wall ontologies interconnected are total to mountable 8~16 cooling columns, form a cooling column group)；.
Cooling wall of the present invention is cast-iron cooling wall or copper cooling wall, is installed on the furnace bosh, bosh, shaft of blast furnace
Lower part；Larger in view of cooling column volume, the cooling column water pipe in cooling column is longer, therefore the cooling column water pipe in the cooling column
Cooling water inflow it is identical as the flow of the cooling water pipe of blast furnace cooling stave；In order to reach cooling effect, the cooling column group
Cooling capacity is 1.5 times of the original cooling water pipe of cooling wall ontology.
Step of the present invention (7) in, in match pattern recognition unit 25 quasi-mode recognition units cope with processing grade determined
Treatment Countermeasures are as follows:
1-5 class: furnace wall bonding does not need to increase cooling water inflow；
6-15 class: the type of furnace is normal, does not need to increase cooling water inflow；
16-18 class: thermic load (70000-85000MJ/H) is slightly higher, and the single water branch pipe that supplements increases water 5%；
19-20 class: thermic load is higher (850000-100000MJ/H), and the single water branch pipe that supplements increases water 8%；
21-22 class: hot wind lotus is high (100000-120000MJ/H), and the single water branch pipe that supplements increases water 12%；
23-24 class: thermic load is very high (120000-145000MJ/H), and the single water branch pipe that supplements increases water 15%；
25 classes: thermic load is high (>=145000MJ/H), and the single water branch pipe that supplements increases water 20%.
Step of the present invention (8) in, the established standards are as follows:
Cast-iron cooling wall: temperature >=140 DEG C at bosh；Temperature >=130 DEG C at furnace bosh；Restoration of lower stack >=120 DEG C；
Copper cooling wall: temperature >=90 DEG C at bosh；Temperature >=90 DEG C at furnace bosh；Restoration of lower stack >=80 DEG C.
The adjusting foundation of supplement water regulating valve door of the present invention are as follows:
A piece cooling water pipe flow is about in 14m3/ h~18m3/ h determines following water according to 4 cooling column temperature measurement results
Adjustable strategies are constituted in a measurement sample in the temperature measuring data of the included thermometric galvanic couple of 4 cooling columns,
1 temperature measuring data breaks through above-mentioned setting value, and water increases by 5%；
2 temperature measuring datas break through above-mentioned setting value, and water increases by 8%；
3 temperature measuring datas break through above-mentioned setting value, and water increases by 12%；
4 temperature measuring datas break through above-mentioned setting value, and water increases by 15%.
Step of the present invention (2) in furnace skin aperture foundation: the diameter of cooling column is generally in 20cm~25cm or so, to reduce
Furnace skin possibility of cracks guarantees cooling column cooling capacity, is spaced in 20 cm~30cm, one piece of cooling wall ontology between cooling column
Width about 1.2m, length about 2.0m, 2 can be installed by above-mentioned interval and cooling column dimension, one piece of damaged cooling wall ontology
Arrange each 4 cooling columns.
Due to the adoption of the above technical scheme, the present invention preferably realizes goal of the invention, passes through optimization cooling column installation
Position, Installation Modes use as a servant the later period in furnace, disposably install multiple cooling columns in cooling wall breakage region, constitute a cooling column
Group makes 1.5 times of the original cooling water pipe of cooling capacity of entire cooling column group, on the one hand can provide enough cooling energy
Power avoids single cooling column cooling capacity insufficient, prevents the problems in furnace skin stress collection, on the other hand in one group of cooling column group
Installation supplement water regulating valve door on water inlet pipe, under the normal working of a furnace, cooling column group is provided and original cooling water pipe similarly cools down
Effect will supplement water regulating valve door by adjusting when detecting that blast furnace heat load region faces the impact of biggish thermic load
Local cooling water flow is increased, using the instantaneous cooling regulatory function of cooling column group, timely responds to bottom house big heat wink
When influence of the impact to cooling column, the requirement that blast furnace resists heat impact, reply heat punching are met by instantaneously adjusting flow
It hits, heat-dense is avoided to impact furnace skin, avoid rubescent, the cracking of furnace skin, it is ensured that the stable smooth operation of blast furnace.
Detailed description of the invention
Fig. 1 is the installation of cooling column group and cooling water flow Principles of Regulation figure in the embodiment of the present invention 1.
In figure: 1. cooling water pipes；2. cooling wall ontology；3. cooling column；4. the instantaneous regulating device of cooling water.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Embodiment 1:
As shown in Figure 1, a method of reply State of Blast Furnace labour later period thermic load impact, it the following steps are included:
(1) drop stockline: in the case where cooling wall is a large amount of damaged, it is cold to be reduced to remaining by the cooling wall wall body of cleaning residual for stockline
But (the present embodiment is with 3200m below wall absolute altitude3Blast furnace for, shaft height 17.5m, furnace abdominal height 2m, furnace waist height 3m),
Installation, construction in favor of cooling column of blast furnace 3；
(2) furnace Pi Kaikong: the characteristics of according to damaged area, with drilling machine aperture on the furnace skin around damaged area, aperture depth
It is subject to and touches furnace charge (the present embodiment is for 3200m3Its furnace skin of blast furnace and cooling wall overall thickness are in the ㎜ of 400 ㎜~500), i.e.,
Aperture depth touches subject to furnace charge after cooling column 3 should be made to install；
(3) cooling column group is installed: for the cooling effect for giving full play to each cooling column 3, each breakage 2(blast furnace cooling wall by muti-piece
2 composition) 1 position of cooling water pipe at install cooling column group；
(4) connect cooling column group: 2 original cooling water pipes 1 being sequentially connected to cooling column group, to replace the cold of damaged cooling wall
But function makes each cooling column 3(and cooling column group positioned at same row) it is connected on a water pipe；
(5) the instantaneous regulating device 4 of cooling water is installed: in the water supplying pipe inlet of each cooling column group installation connection supplement water branch pipe, being mended
Water-filling branch pipe is equipped with force (forcing) pump, supplement water regulating valve door, to cope with the impact of high heat load；
(6) establishment model recognition unit: hot face heat inside the galvanic couple measurement blast furnace for utilizing cooling column 3 each in cooling column group included
Impact condition, i.e. measurement temperature, and data (in oracle database) is saved, pattern-recognition is carried out according to real time data, is commented
Sentence the temperature change feature of cooling column group；A measurement sample is constituted with the measurement data of the galvanic couple of every 4 cooling columns 3, every 5 points
Clock measures a data, carries out pattern-recognition with 3 months real time datas；Big heat is coped with using pattern class building simultaneously to rush
The knowledge base hit forms 25 quasi-mode recognition units by heat impact degree grade separation；
(7) data characteristics assessment unit is established: the data of the cooling column group of measurement in every 5 minutes, with the data and pattern-recognition list
Mode data in member is matched, and current processing grade is found, and treatment Countermeasures are determined from knowledge base；
(8) issue handling: when the galvanic couple that cooling column 3 carries detects that blast furnace heat load region faces the impact of biggish thermic load,
Ought detect have in 1 cooling column group 1 or 2 cooling column 3(the present embodiment be 2) galvanic couple temperature reach established standards
When, the supplement water regulating valve door on water branch pipe, force (forcing) pump are supplemented by starting increases 3 Local cooling water flow of cooling column, with
Heat impact is coped with, heat-dense is avoided to impact furnace skin, avoids rubescent, the cracking of furnace skin；
After instantaneous thermal shock is calmed down, force (forcing) pump is closed, supplement water regulating valve door is turned down, by water supply adjustment and recovery to just
The water supply level of normal cooling wall；
(9) knowledge base update: every mistake 1 month by method and step (1)~(6) knowledge base is updated, enrich, improve current knowledge
Library.
The step of the present embodiment (3) in, 1 length of cooling water pipe about 2m in one piece 2,3 diameter of cooling column is 25
㎝, disposably installation is equipped with the cooling column 3 of 4 included thermometric galvanic couples in 1 length range of cooling water pipe in described 2；By
Contain 4 cooling water pipes 1 in one piece 2, the spacing of adjacent two cooling water pipe 1 is 20 ㎝, and the cooling column group includes being set to
The cooling column group of 4~16 cooling column 3(the present embodiment on cooling wall is to be arranged on one piece 2 with 4 cooling columns 3 one, two column of left and right
Totally 8 cooling columns 3 constitute a cooling column group).
Cooling wall of the present invention is cast-iron cooling wall or copper cooling wall, is installed on the furnace bosh, bosh, shaft of blast furnace
Lower part；Larger in view of 3 volume of cooling column, the cooling column water pipe in cooling column 3 is longer, therefore the cooling column in the cooling column 3
The cooling water inflow of water pipe is identical as the flow of cooling water pipe 1 of blast furnace cooling stave；In order to reach cooling effect, the cooling column
The cooling capacity of group is 1.5 times of 2 original cooling water pipes 1.
Step of the present invention (7) in, in match pattern recognition unit 25 quasi-mode recognition units cope with processing grade determined
Treatment Countermeasures are as follows:
1-5 class: furnace wall bonding does not need to increase cooling water inflow；
6-15 class: the type of furnace is normal, does not need to increase cooling water inflow；
16-18 class: thermic load (70000-85000MJ/H) is slightly higher, and the single water branch pipe that supplements increases water 5%；
19-20 class: thermic load is higher (850000-100000MJ/H), and the single water branch pipe that supplements increases water 8%；
21-22 class: hot wind lotus is high (100000-120000MJ/H), and the single water branch pipe that supplements increases water 12%；
23-24 class: thermic load is very high (120000-145000MJ/H), and the single water branch pipe that supplements increases water 15%；
25 classes: thermic load is high (>=145000MJ/H), and the single water branch pipe that supplements increases water 20%.
Step of the present invention (8) in, the established standards are as follows:
Cast-iron cooling wall: temperature >=140 DEG C at bosh；Temperature >=130 DEG C at furnace bosh；Restoration of lower stack >=120 DEG C；
Copper cooling wall: temperature >=90 DEG C at bosh；Temperature >=90 DEG C at furnace bosh；Restoration of lower stack >=80 DEG C.
The adjusting foundation of supplement water regulating valve door of the present invention are as follows:
Piece 1 flow of cooling water pipe is about in 14m3/ h~18m3/ h determines following water according to 43 temperature measurement results of cooling column
Adjustable strategies are measured, are constituted in a measurement sample in the temperature measuring data of the included thermometric galvanic couple of 4 cooling columns 3,
1 temperature measuring data breaks through above-mentioned setting value, and water increases by 5%；
2 temperature measuring datas break through above-mentioned setting value, and water increases by 8%；
3 temperature measuring datas break through above-mentioned setting value, and water increases by 12%；
4 temperature measuring datas break through above-mentioned setting value, and water increases by 15%.
Embodiment 2:
The cooling column group of the present embodiment is to be arranged on one piece 2 with 4 cooling columns 3 one, and left and right two arranges totally 8 cooling columns 3, neighbouring
Installation 2 arranges totally 16 cooling columns 3 altogether for the two 2 of connection, constitutes a cooling column group.
Remaining same embodiment 1.
Embodiment 3:
The cooling column group of the present embodiment is to be arranged on one piece 2 with 4 cooling columns 3 one, up and down the successively installation altogether of three piece 2 of adjacent connection
1 arranges totally 12 cooling columns 3, constitutes a cooling column group.
Remaining same embodiment 1.
Embodiment 4:
The cooling column group of the present embodiment is to be arranged on one piece 2 with 4 cooling columns 3 one, constitutes a cooling column group.
Remaining same embodiment 1.
Claims (9)
1. it is a kind of reply State of Blast Furnace labour later period thermic load impact method, it is characterised in that it the following steps are included:
(1) drop stockline: stockline is reduced to remaining cooling wall absolute altitude or less by the cooling wall wall body of cleaning residual；
(2) furnace Pi Kaikong: with drilling machine aperture on furnace skin around damaged area, aperture depth, which is subject to, touches furnace charge；
(3) cooling column group is installed: cooling column group is installed at the cooling water pipe position of each damaged cooling wall ontology；
(4) connect cooling column group: the original cooling water pipe of cooling wall ontology is sequentially connected to cooling column group, make to be located at same row
Each cooling column be connected on a water pipe；
(5) the instantaneous regulating device of cooling water is installed: in the water supplying pipe inlet of each cooling column group installation connection supplement water branch pipe, being mended
Water-filling branch pipe is equipped with force (forcing) pump, supplement water regulating valve door；
(6) establishment model recognition unit: hot face heat punching inside the galvanic couple measurement blast furnace for utilizing each cooling column in cooling column group included
Situation is hit, i.e. measurement temperature, and save data, pattern-recognition is carried out according to real time data, judges the temperature change of cooling column group
Feature；A measurement sample, the data of measurement in every 5 minutes, with 3 are constituted with the measurement data of the galvanic couple of every 4 cooling columns
The real time data of the moon carries out pattern-recognition；The knowledge base for being coped with big heat impact using pattern class building simultaneously, is rushed by heat
Intensity grade is hit to classify to form 25 quasi-mode recognition units；
(7) data characteristics assessment unit is established: the data of the cooling column group of measurement in every 5 minutes, with the data and pattern-recognition list
Mode data in member is matched, and current processing grade is found, and treatment Countermeasures are determined from knowledge base；
(8) issue handling: when the galvanic couple that cooling column carries detects that blast furnace heat load region faces the impact of biggish thermic load,
I.e. when detecting in 1 cooling column group has the galvanic couple temperature of 1 or 2 cooling column to reach established standards, water is supplemented by starting
Supplement water regulating valve door, force (forcing) pump on branch pipe increase cooling column Local cooling water flow；
After instantaneous thermal shock is calmed down, force (forcing) pump is closed, supplement water regulating valve door is turned down, by water supply adjustment and recovery to just
The water supply level of normal cooling wall；
(9) knowledge base update: every mistake is updated knowledge base in 1 month, enriches, improves current knowledge library.
2. a kind of method for the reply State of Blast Furnace labour later period thermic load impact stated according to claim 1, it is characterised in that step is (3)
In, 4 cooling columns are equipped in the cooling wall ontology in a cooling water pipe length range；The cooling column group includes setting
In 4~16 cooling columns on cooling wall.
3. a kind of method of reply State of Blast Furnace labour later period thermic load impact according to claim 1, it is characterised in that described
Cooling wall be cast-iron cooling wall or copper cooling wall；The cooling water inflow and blast furnace cold of cooling column water pipe in the cooling column
But the flow of the cooling water pipe of wall is identical；The cooling capacity of the cooling column group is the original cooling water pipe of cooling wall ontology
1.5 again.
4. a kind of method of reply State of Blast Furnace labour later period thermic load impact according to claim 2, it is characterised in that described
Cooling wall be cast-iron cooling wall or copper cooling wall；The cooling water inflow and blast furnace cold of cooling column water pipe in the cooling column
But the flow of the cooling water pipe of wall is identical；The cooling capacity of the cooling column group is the original cooling water pipe of cooling wall ontology
1.5 again.
5. a kind of method of reply State of Blast Furnace labour later period thermic load impact according to claim 3, it is characterised in that step
(7) in, treatment Countermeasures determined by the processing grade that 25 quasi-mode recognition units are coped in match pattern recognition unit are as follows:
1-5 class: furnace wall bonding does not need to increase cooling water inflow；
6-15 class: the type of furnace is normal, does not need to increase cooling water inflow；
16-18 class: thermic load (70000-85000MJ/H) is slightly higher, and the single water branch pipe that supplements increases water 5%；
19-20 class: thermic load is higher (850000-100000MJ/H), and the single water branch pipe that supplements increases water 8%；
21-22 class: hot wind lotus is high (100000-120000MJ/H), and the single water branch pipe that supplements increases water 12%；
23-24 class: thermic load is very high (120000-145000MJ/H), and the single water branch pipe that supplements increases water 15%；
25 classes: thermic load is high (>=145000MJ/H), and the single water branch pipe that supplements increases water 20%.
6. a kind of method of reply State of Blast Furnace labour later period thermic load impact according to claim 4, it is characterised in that step
(7) in, treatment Countermeasures determined by the processing grade that 25 quasi-mode recognition units are coped in match pattern recognition unit are as follows:
1-5 class: furnace wall bonding does not need to increase cooling water inflow；
6-15 class: the type of furnace is normal, does not need to increase cooling water inflow；
16-18 class: thermic load (70000-85000MJ/H) is slightly higher, and the single water branch pipe that supplements increases water 5%；
19-20 class: thermic load is higher (850000-100000MJ/H), and the single water branch pipe that supplements increases water 8%；
21-22 class: hot wind lotus is high (100000-120000MJ/H), and the single water branch pipe that supplements increases water 12%；
23-24 class: thermic load is very high (120000-145000MJ/H), and the single water branch pipe that supplements increases water 15%；
25 classes: thermic load is high (>=145000MJ/H), and the single water branch pipe that supplements increases water 20%.
7. a kind of method of reply State of Blast Furnace labour later period thermic load impact according to claim 1 or 2 or 3 or 4 or 5 or 6,
It is characterized in that step (8) in, the established standards are as follows:
Cast-iron cooling wall: temperature >=140 DEG C at bosh；Temperature >=130 DEG C at furnace bosh；Restoration of lower stack >=120 DEG C；
Copper cooling wall: temperature >=90 DEG C at bosh；Temperature >=90 DEG C at furnace bosh；Restoration of lower stack >=80 DEG C.
8. a kind of method of reply State of Blast Furnace labour later period thermic load impact according to claim 1 or 2 or 3 or 4 or 5 or 6,
It is characterized in that the adjusting foundation of the supplement water regulating valve door are as follows: constitute one in the temperature measuring data of 4 cooling columns
It measures in sample,
1 temperature measuring data breaks through above-mentioned setting value, and water increases by 5%；
2 temperature measuring datas break through above-mentioned setting value, and water increases by 8%；
3 temperature measuring datas break through above-mentioned setting value, and water increases by 12%；
4 temperature measuring datas break through above-mentioned setting value, and water increases by 15%.
9. a kind of method of reply State of Blast Furnace labour later period thermic load impact according to claim 7, it is characterised in that described
Supplement water regulating valve door adjusting foundation are as follows: constituted in a measurement sample in the temperature measuring data of 4 cooling columns,
1 temperature measuring data breaks through above-mentioned setting value, and water increases by 5%；
2 temperature measuring datas break through above-mentioned setting value, and water increases by 8%；
3 temperature measuring datas break through above-mentioned setting value, and water increases by 12%；
4 temperature measuring datas break through above-mentioned setting value, and water increases by 15%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114622045A (en) * | 2021-12-01 | 2022-06-14 | 武汉科技大学 | Method for reducing temperature of blast furnace shell by using cooling column and cooling plate |
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