CN107385131A - It is a kind of to tackle the bosh furnace bosh restoration of lower stack blast-furnace soft water cooling means that instantaneously big heat impacts - Google Patents
It is a kind of to tackle the bosh furnace bosh restoration of lower stack blast-furnace soft water cooling means that instantaneously big heat impacts Download PDFInfo
- Publication number
- CN107385131A CN107385131A CN201710780598.4A CN201710780598A CN107385131A CN 107385131 A CN107385131 A CN 107385131A CN 201710780598 A CN201710780598 A CN 201710780598A CN 107385131 A CN107385131 A CN 107385131A
- Authority
- CN
- China
- Prior art keywords
- furnace
- cooling
- bosh
- water
- soft water
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
Landscapes
- Engineering & Computer Science (AREA)
- 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)
Abstract
The present invention provides a kind of reply bosh furnace bosh restoration of lower stack blast-furnace soft water cooling means that instantaneously big heat impacts, belong to ironmaking body of heater cooling technology field, this method includes conventional soft water cooling system and additional soft wa ter service system, in blast-furnace bosh, furnace bosh, restoration of lower stack uses new 6 passage copper cooling wall, automatically controlled with reference to high sensitivity thermometric galvanic couple and throttle plate, on the one hand the impact cooled down greatly to normal operation of blast furnace is reduced as far as possible, on the other hand there is the instantaneous big hot-fluid impact of enough surplus replies, solve conventional traditional copper cooling wall and be difficult to the defects of instantaneous big hot-fluid of reply impacts, the cooling flexibility of soft water system has been significantly greatly increased, it is adapted to the requirement of various smeltings.
Description
Technical field
The invention belongs to smelt iron body of heater cooling technology field, a kind of specific reply bosh furnace bosh restoration of lower stack of offer is instantaneously big
The blast-furnace soft water cooling means of heat impact.
Background technology
Blast furnace is main force's equipment of production molten iron both at home and abroad at present, typically by installing water flowing cooling wall in furnace shell to ensure
Blast furnace process is smoothed out.Since 2000, domestic nearly 300 large blast furnaces all gradually adopt copper to cool down in high-temperature area
Wall.In blast furnace cooling system design process, due to smelting the change of environment inside and outside blast furnace, such as external feed quality fluctuation, Jiao
Charcoal degradation, rainy, furnace charge water content fluctuation, equipment fault, control failure, improper, the stokehold operation limitation of operation reply etc.
The influence of factor, the normal operation of blast furnace process can be impacted, cause coming off for the slag crust that furnace wall bonded.Large area slag
When skin comes off, the disturbance of huge high-temperature coal air-flow can be nearby formed coming off, causes coal gas of high temperature, fusing slag iron to act directly on
Bosh, furnace bosh, restoration of lower stack cooling wall on, cooling wall local temperature is drastically raised, once the pole more than cooling wall scaling loss
Limit temperature when, by taking copper cooling wall as an example, reach 425 DEG C in hot-face temperature, when the time was more than 20 minutes cooling wall will scaling loss, enter
And a large amount of leaks into stove, severe jamming blast furnace process are smoothed out.
Existing blast furnace cooling system is to use soft water cooling, and whole blast-furnace body supplies water from bottom to top, each cooling wall one
As have 4 cooling water pipes, supplied water using permanent water, permanent water speed, this can artificially cause the undue growth of slag crust, be smooth operation of furnace
Destruction causes a hidden trouble.When the large area slag crust come off in stove, furnace high-temperature air-flow meeting instant contact cooling wall, cooling wall needs
The safety that amount of heat just can ensure that cooling system, the cooling wall pair that permanent water, permanent water speed supply water are taken away in a short time
Such case is often unable to do what one wishes, and copper cooling wall is exposed in hot environment for a long time can cause its wearability, anti-slag iron to corrode
Property substantially reduces, and especially in bosh, furnace bosh, restoration of lower stack high-temperature area, is more easy to that cooling system occurs in big slag crust come off
Burning phenomenon.
Document " Gao Fusheng, No. five blast furnace copper cooling stave failure analysis (FA)s of this steel and improvement, the metal world, the 4th phase in 2012.”
This steel 4000m3Blast furnace at the beginning of design in 3 sections of copper cooling walls of high temperature section, but due to material quality, managerial skills be difficult to it is full
The requirement of sufficient blast furnace water system, working of a furnace fluctuation is big, causes copper cooling wall large area after blow-on 6~7 years to damage, it is big to be forced blast furnace
Repair.
Document " Zou Zuqiao, Chen Lingkun, No. 7 blast furnace of WISCO blast-furnace tuyere cast-iron cooling wall broken cause analysis, the 9th Chinese steel
Iron nd Annual Meeting collection, Beijing, metallurgical industry publishing house, 2015 " in describe No. 7 blast furnace of WISCO blast furnace 3200m3Copper cooling wall is damaged
Situation, although No. 7 blast furnace of WISCO blast furnace has perfect soft water to use experience, due to design reasons, in copper cooling wall, cast-iron cooling wall
For binding site because contact area is few, cooling coordinates deficiency, causes slag iron intrusion cooling wall behind, burns out water pipe and causes copper cooling
The breakage of wall.
Document " Chen Lingkun, Song Musen, the reason for No.4 BF at WISGCO cooling wall breakage, ironmaking, the 5th phase of volume 27,2008
October in year " in order to tackle the impact of the heat of high thermal load regions, has specially used the cast-iron cooling wall with coiled pipe, due to casting
The reason for quality, pipe, wall contact are bad, and coiled pipe resistance damage is big in addition, and cooling flow is small, and cooling effect is unsatisfactory, in blast furnace
It is still a large amount of damaged using cooling wall after a period of time.
Document " even sincere, Huang Deyou, Blast Furnace soft water airtight circulating cooling system compares, ironmaking, 2 phases in 2002,
Vol.21, No.1 " are reply heat impact, the cooling wall with eave tile have specially been used, because slag crust come off can cause refractory brick
The peeling of lining, eave tile is set to be exposed in coal gas of high temperature, eave tile cooling capacity can't strengthen because of slag crust come off, still be difficult to tackle
The impact of instantaneous big hot-fluid.
Domestic so far to have had nearly stove of seat height more than 100 that copper cooling wall breakage occurs, these breakages are all without exception
Caused by instantaneous big hot-fluid impact being difficult in adapt to due to slag crust come off, high-temperature coal airflow scouring, cooler, traditional cooling system
Can flexibility be high in terms of the instantaneous big hot-fluid impact of reply, withstand impact, see full design parameter whether rationally, when exposing
Between whether short enough, frequency of impact within zone of reasonableness, this design can not automatically adjust cooling parameter in itself, make
The change that cooling capacity actively adapts to external condition is obtained, so on long terms, it is damaged inevitable.
The content of the invention
In order to solve the above problems, it is an object of the present invention to provide the blast-furnace soft water cooling side of the instantaneous big hot-fluid impact of reply
Method, increase the cooling flexibility of soft water system.
The present invention provides a kind of reply bosh furnace bosh restoration of lower stack blast-furnace soft water cooling means that instantaneously big heat impacts, its
It is characterised by, including：
Conventional soft water cooling system, overall cooling is carried out to blast furnace；
Additional soft wa ter system unit, reply bosh furnace bosh restoration of lower stack provide additional soft wa ter when instantaneously big heat impacts, had
Body comprises the following steps：
1) cooling wall temperature detecting unit, the temperature in the hot face of detection cooling wall；
2) temperature monitoring data saving unit, above-mentioned thermometric information is stored in database；
3) slag crust, air-flow change judging unit, Land use models recognizer are carried out to the temperature measurement data in above-mentioned database
Diagnosis, copper cooling wall temperature anomaly is found in time, and whether the change of accurate judgement slag crust, air-flow is violent；If slag crust, air-flow are not
Generation acute variation, carry out step 3.1)；If acute variation occurs for slag crust, air-flow, step 3.2) is carried out；
3.1) normal working of a furnace processing unit, keeps the cooling situation under normal condition, cooling parameter not to adjust；
3.2) slag crust, air-flow acute variation processing unit, additional soft wa ter system unit is adjusted；
4) additional soft wa ter system unit, independently of the water charging system outside conventional soft water system, normal soft water is not disturbed
System；
5) additional soft wa ter system readjustment unit, after detecting that blast furnace high-temperature region temperature progressively tends to be normal, gradually adjustment
Cooling parameter, it is set to tend to normal operating condition.
Specifically, in step 1) cooling wall temperature detecting unit, the cooling wall is applied to blast-furnace bosh, furnace bosh and shaft
Bottom, using new reinforced 6 passage copper cooling wall.
Specifically, in step 1) cooling wall temperature detecting unit, 2 high precision measuring temperature electricity are respectively mounted on each piece of cooling wall
Even, monitoring point is as close to the hot face of cooling wall, and its thermometric end is at the dividing plate of brick-inlaid groove.
Specifically, in step 2) temperature monitoring data saving unit, every the blast furnace high-temperature area cooling of 1 minute record
The thermometric information of wall, and thermometric information is stored in the oracle database of blast furnace process computer, every piece of cooling wall it is each
Section temperature detection data form a form.
Specifically, in step 3) slag crust, air-flow change judging unit, the temperature changing speed of single monitoring point temperature measurement data
Once more than 7 DEG C/min, you can confirm that acute variation occurs for slag crust, air-flow.
Specifically, any of the above-described described additional soft wa ter system unit, including：The soft water pond that is linked in sequence successively, supply water
Pipeline, supply-water pump, water supply endless tube and water supply branch pipe, and the return branch being linked in sequence successively, the endless tube that catchments, expansion tube, degassing
Tank, choke valve and heat exchanger；Water supply endless tube subregion is supplied water to blast furnace, and each region includes water supply branch pipe, respectively to every
The cooling wall in individual region is supplied water；The both sides connection that water supply branch pipe and return branch are connected with blast furnace cooling device respectively；Collection
Water ring pipe collects the soft water after the cooling wall cooling returned from return branch；Expansion tube is connected to endless tube downstream of catchmenting, to concentrating
Soft water slowed down, be then transferred in degassing tank remove water in gas；Throttle valve control soft water flow velocity, the balanced resistance of ducting,
Finally flow to the heat exchanger for backwater heat exchange；Heat exchanger connects choke valve and soft water pond, forms cooling circuit.
More specifically, in any of the above-described described additional soft wa ter system unit, soft water pond is used to carry soft water for cooling, soft
Water water charging system unit and conventional soft water cooling system share a soft water pond.
More specifically, in any of the above-described described additional soft wa ter system unit, choke valve is detecting big slag crust come off, height
Warm Gas Flow washes away etc. when jeopardizing the abnormal working of a furnace that cooler uses, and Open valve, increases output.
The key of the present invention is to propose a kind of method for tackling instantaneous big hot-fluid impact, first in newly-built, reconstruction, overhaul
On the blast furnace of transformation, traditional soft water is incorporated to using new 6 passage copper cooling wall in blast-furnace bosh, furnace bosh, restoration of lower stack
In circulating cooling system, to meet the needs of daily blast furnace cooling；Secondly, 2 high sensitivities are installed on every piece of cooling wall to survey
Warm galvanic couple, to measure the change that wall temperature is cooled down during use；Again, once having identified big slag crust come off, high-temperature coal
Airflow scouring etc. jeopardizes the abnormal working of a furnace that cooler uses and occurred, and starts supplement soft water cooling system at once, makes in the unit interval
There are more heat outflow blast furnaces；Finally, automatically controlled using throttle plate, usually only retain minimum flow speed of water, detected
When jeopardizing the abnormal working of a furnace that cooler uses to big slag crust come off, high-temperature coal airflow scouring etc., Open valve, output is increased.
The beneficial effects of the present invention are：1) targetedly cooled down, led to for the fluctuation of the blast furnace high-temperature area working of a furnace
The cooling duct of particular design is crossed, to cool down based on copper cooling wall, excessive infringement will not be caused to smelting environment in stove, it is unlikely
In aggravating thickness of the slag crust because of supercooling；2) solve conventional traditional copper cooling wall and be difficult to the defects of instantaneous big hot-fluid of reply impacts,
The cooling flexibility of soft water system has been significantly greatly increased, has been adapted to the requirement of various smeltings；3) high sensitivity thermometric galvanic couple is combined
Automatically controlled with throttle plate, on the one hand reduce the impact cooled down greatly to normal operation of blast furnace as far as possible, on the other hand have
The instantaneous big hot-fluid impact of enough surplus replies, reduce the probability of damage of blast furnace high-temperature area copper cooling wall.
Brief description of the drawings
Fig. 1 is the process chart of the inventive method；
Fig. 2 is the piping diagram of additional soft wa ter system of the present invention.
In figure, 1, soft water pond, 2, water supply line, 3, supply-water pump, 4, water supply endless tube, 5, water supply branch pipe, 6, return branch, 7,
Catchment endless tube, and 8, expansion tube, 9, degassing tank, 10, choke valve, 11, heat exchanger.
Embodiment
With 4000m3Exemplified by blast furnace, 4000m3Blast furnace includes 44 pieces of cooling walls in general every section of high-temperature area, bosh, furnace bosh,
Restoration of lower stack generally comprises 4 sections of cooling walls.In order to prevent the scaling loss of copper cooling wall, increase high-precision cooling wall installation number.
Blast-furnace bosh, furnace bosh, restoration of lower stack use 3~5 sections of new 6 passage copper cooling walls, and 4 water pipes of its cooling wall are incorporated to traditional
In soft water airtight circulating cooling system, used as daily cooling system.
Step 1) cooling wall and temperature detecting unit：2 high precision measuring temperature galvanic couples are all installed on each piece of cooling wall, monitored
Blast furnace by thermometric end at the dividing plate of brick-inlaid groove, is divided into 4 areas, every section each by point as close to the hot face of cooling wall
11 pieces of area cooling wall, every section of each area totally 22 temperature measuring points.
Step 2) temperature monitoring data saving unit：Blast furnace high-temperature area cooling wall thermometric information of every 1 minute record,
And measurement data is stored in oracle database, thermometric information is stored in the database table of blast furnace process computer, is
It is easy to subsequent treatment, the data in each area of 4 areas are stored in independent table here, and table name is：ST_Tem_E, ST_Tem_W, ST_
Tem_N, ST_Tem_S.
Step 3) slag crust, air-flow change judging unit：Land use models recognizer is examined temperature measurement data in database
It is disconnected, copper cooling wall temperature anomaly is found in time, and whether the change of accurate judgement slag crust, air-flow is violent.It is this to be identified by counting
The temperature changing speed for calculating monitoring point determines whether slag crust, air-flow occur acute variation.Its temperature of single-point temperature measurement data becomes
The speed of change is once more than 7 DEG C/min, you can confirms that acute variation occurs for slag crust, air-flow.If slag crust, air-flow do not occur acutely
Change, then the normal working of a furnace processing unit of step 3.1) is carried out, keeps current cooling situation, cooling parameter does not adjust；If
Acute variation occurs for slag crust, air-flow, then carries out step 3.2) slag crust, air-flow acute variation processing unit, starts small pump moisturizing.
Step 4) additional soft wa ter system unit：In order to prevent from disturbing normal soft water system, this set water charging system is designed to
A set of independent soft water system.
As shown in Figure 2, additional soft wa ter system includes the soft water pond 1 being linked in sequence successively, water supply line 2, supply-water pump
3, water supply endless tube 4 and water supply branch pipe 5, and the return branch 6 being linked in sequence successively, catchment endless tube 7, expansion tube 8, degassing tank 9,
Choke valve 10 and hot device 11；Wherein water supply branch pipe 5 and return branch 6 are connected to the both sides that blast furnace cooling device connects, heat exchanger
11 connection choke valves 10 and soft water pond 1, so as to form cooling circuit.
Soft water pond 1：For carrying soft water for cooling, soft water pond can share a soft water with conventional soft water cooling system
Pond, volume settings 500m3。
Vibration means for main pipe for supplying water 2：For transporting cooling soft water, supplied water using Φ 300mm water supply lines.
Supply-water pump 3：3 supply-water pumps, 2 use simultaneously, and 1 standby, and for being pressurizeed to soft water, and it is dynamic to provide conveying
Power.
Water supply endless tube 4：Water supply endless tube supplies water respectively to 4 regions of blast furnace, and 4 regions are respectively to blast furnace cooling device
Supplied water, 4 water supply line Φ 200mm.
Water supply branch pipe 5：Each region includes 22 water supply branch pipes, and 11 pieces of cooling walls in each region are supplied respectively
Water, here with 76 × 8mm of Φ water supply branch pipe, each branch pipe normal water supply speed 1.2m/s, feed rate is during the abnormal working of a furnace
1.6~2.0m/s, speed selection are independently selected by PLC (programmable logic controller (PLC)) systems according to slag crust, air-flow situation of change.
If there is 20 temperature changing speed >=5 DEG C/min in monitoring point, water speed is set as 2.0m/s；
If in monitoring point, 10 points≤temperature change is counted≤20 points, and its temperature changing speed >=5 DEG C/min, water speed is set
It is set to 1.8m/s；
If in monitoring point, temperature change is counted≤10 points, and its temperature changing speed >=5 DEG C/min, water speed is set as
1.6m/s。
The excursion of specific cooling water inflow see the table below 1.
Cooling water inflow excursion during 1 working of a furnace exception of table
| Cool down water flow velocity, m/s | Single water pipe water, m3/h | Total cooling water inflow, m3/h |
| 1.2 | 12.2 | 1074 |
| 1.6 | 16.27 | 1432 |
| 1.8 | 18.31 | 1611 |
| 2.0 | 20.34 | 1790 |
Return branch 6：Soft water after being cooled down for cooling wall returns, and return branch uses Φ 76 × 8mm water pipes.
Catchment endless tube 7：Soft water after cooling is collected, concentrates and carries out subsequent treatment, backwater collector is managed using Φ 300mm
Road.
Expansion tube 8：Slow down for cooling water, gas in water is beneficial to removing, volume 15m3。
Degassing tank 9：For removing gas in soft water, volume 15m3。
Choke valve 10：For controlling soft water flow velocity, the balanced resistance of ducting；Usually only retain minimum flow speed of water；It is big detecting
When slag crust come off, high-temperature coal airflow scouring etc. jeopardize the abnormal working of a furnace that cooler uses, Open valve, output is increased, makes benefit
Water-filling speed reaches 2.0m/s, and normal single tube cooling water inflow is the 80~90% of convention water hose cooling water inflow.
Heat exchanger 11：For the heat exchange of backwater, exchange capability of heat 1900m3/ h, can be by 50 DEG C of soft water coolings to 38 DEG C.
Step 5) additional soft wa ter system adjusts back unit, once detect that slag crust regenerates, or high-temperature coal air-flow rushes
Brush tends to be reasonable, i.e., progressively closes throttling passage, keep minimum current, makes water-carrying capacity for the 30~40% of normal water pipe flow.
Claims (8)
1. a kind of tackle the bosh furnace bosh restoration of lower stack blast-furnace soft water cooling means that instantaneously big heat impacts, it is characterised in that bag
Include：
Conventional soft water cooling system, traditional soft water airtight circulating cooling system, overall cooling is carried out to blast furnace；
Additional soft wa ter service system, reply bosh furnace bosh restoration of lower stack provide additional soft wa ter when instantaneously big heat impacts, specific bag
Include following steps：
1) cooling wall temperature detecting unit：Detect the temperature in the hot face of cooling wall；
2) temperature monitoring data saving unit：Above-mentioned thermometric information is stored in database；
3) slag crust, air-flow change judging unit：Land use models recognizer diagnoses to the temperature measurement data in above-mentioned database,
Copper cooling wall temperature anomaly is found in time, and whether the change of accurate judgement slag crust, air-flow is violent；If slag crust, air-flow do not occur
Acute variation, carry out step 3.1)；If acute variation occurs for slag crust, air-flow, step 3.2) is carried out；
3.1) normal working of a furnace processing unit：The cooling situation under normal condition, cooling parameter is kept not to adjust；
3.2) slag crust, air-flow acute variation processing unit：Adjust additional soft wa ter system unit；
4) additional soft wa ter system unit：Independently of the water charging system outside conventional soft water system, normal soft water system is not disturbed；
5) additional soft wa ter system readjustment unit：After detecting that blast furnace high-temperature region temperature progressively tends to be normal, gradually adjustment cooling
Parameter, it is set to tend to normal operating condition.
2. the reply bosh furnace bosh restoration of lower stack blast-furnace soft water cooling side that instantaneously big heat impacts according to claim 1
Method, it is characterised in that：In step 1) the cooling wall temperature detecting unit, the cooling wall be applied to blast-furnace bosh, furnace bosh and
Restoration of lower stack, using new reinforced 6 passage copper cooling wall.
3. the reply bosh furnace bosh restoration of lower stack blast-furnace soft water cooling side that instantaneously big heat impacts according to claim 1
Method, it is characterised in that：In step 1) the cooling wall temperature detecting unit, 2 high accuracy are respectively mounted on each piece of cooling wall and are surveyed
Warm galvanic couple, monitoring point is as close to the hot face of cooling wall, and its thermometric end is at the dividing plate of brick-inlaid groove.
4. the reply bosh furnace bosh restoration of lower stack blast-furnace soft water cooling side that instantaneously big heat impacts according to claim 1
Method, it is characterised in that：In step 2) the temperature monitoring data saving unit, a blast furnace high-temperature area was recorded every 1 minute
The thermometric information of cooling wall, and thermometric information is stored in the oracle database of blast furnace process computer, every piece of cooling wall
Each section of temperature detection data formed a form.
5. the reply bosh furnace bosh restoration of lower stack blast-furnace soft water cooling side that instantaneously big heat impacts according to claim 1
Method, it is characterised in that：In the step 3) slag crust, air-flow change judging unit, the temperature change of single monitoring point temperature measurement data
Speed is once more than 7 DEG C/min, you can confirms that acute variation occurs for slag crust, air-flow.
6. the additional soft wa ter system unit as described in Claims 1 to 4 is any, it is characterised in that including：It is linked in sequence successively
Soft water pond (1), water supply line (2), supply-water pump (3), water supply endless tube (4) and water supply branch pipe (5), and the backwater being linked in sequence successively
Branch pipe (6), the endless tube that catchments (7), expansion tube (8), degassing tank (9), choke valve (10) and heat exchanger (11)；The water supply endless tube
(4) subregion is supplied water to blast furnace, and each region includes water supply branch pipe (5), and the cooling wall in each region is supplied respectively
Water；The both sides connection that the water supply branch pipe (5) and return branch (6) are connected with blast furnace cooling device respectively；The endless tube that catchments
(7) soft water after the cooling wall cooling returned from return branch (6) is collected；The expansion tube (8) is connected under the endless tube that catchments (7)
Trip, the soft water of concentration is slowed down, is then transferred in degassing tank (9) gas in removing water；Choke valve (10) control is soft
Water flow velocity, the balanced resistance of ducting, finally flow to the heat exchanger (11) for backwater heat exchange；The heat exchanger (11) connects choke valve
(10) cooling circuit and soft water pond (1), is formed.
7. additional soft wa ter system unit according to claim 6, it is characterised in that：The soft water pond is for cooling for carrying
Soft water, additional soft wa ter system unit and conventional soft water cooling system share a soft water pond.
8. additional soft wa ter system unit according to claim 6, it is characterised in that：The choke valve is detecting big slag crust
Come off, when high-temperature coal airflow scouring etc. jeopardizes the abnormal working of a furnace that cooler uses, Open valve, increase output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780598.4A CN107385131A (en) | 2017-09-01 | 2017-09-01 | It is a kind of to tackle the bosh furnace bosh restoration of lower stack blast-furnace soft water cooling means that instantaneously big heat impacts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780598.4A CN107385131A (en) | 2017-09-01 | 2017-09-01 | It is a kind of to tackle the bosh furnace bosh restoration of lower stack blast-furnace soft water cooling means that instantaneously big heat impacts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107385131A true CN107385131A (en) | 2017-11-24 |
Family
ID=60347222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710780598.4A Pending CN107385131A (en) | 2017-09-01 | 2017-09-01 | It is a kind of to tackle the bosh furnace bosh restoration of lower stack blast-furnace soft water cooling means that instantaneously big heat impacts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107385131A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111914397A (en) * | 2020-06-30 | 2020-11-10 | 武汉钢铁有限公司 | Method for evaluating residual damage value of cooling wall of blast furnace |
| CN113293247A (en) * | 2021-05-31 | 2021-08-24 | 四川省达州钢铁集团有限责任公司 | Construction method of partial segmental cooling system in blast furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421917A (en) * | 2013-08-15 | 2013-12-04 | 北京首钢国际工程技术有限公司 | Blast furnace soft water closed-recirculation cooling system |
| CN106319118A (en) * | 2015-06-16 | 2017-01-11 | 鞍钢股份有限公司 | Method for prolonging service life of blast furnace copper cooling wall |
-
2017
- 2017-09-01 CN CN201710780598.4A patent/CN107385131A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421917A (en) * | 2013-08-15 | 2013-12-04 | 北京首钢国际工程技术有限公司 | Blast furnace soft water closed-recirculation cooling system |
| CN106319118A (en) * | 2015-06-16 | 2017-01-11 | 鞍钢股份有限公司 | Method for prolonging service life of blast furnace copper cooling wall |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111914397A (en) * | 2020-06-30 | 2020-11-10 | 武汉钢铁有限公司 | Method for evaluating residual damage value of cooling wall of blast furnace |
| CN111914397B (en) * | 2020-06-30 | 2023-12-22 | 武汉钢铁有限公司 | Evaluation method for residual damage value of cooling wall of blast furnace |
| CN113293247A (en) * | 2021-05-31 | 2021-08-24 | 四川省达州钢铁集团有限责任公司 | Construction method of partial segmental cooling system in blast furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104404187A (en) | Blast furnace brickwork slag shell thickness monitoring system and method | |
| CN101939626B (en) | Method and arrangement for measuring at least one physical magnitude, such as temperature, flow or pressure of the cooling fluid flowing in an individual cooling element cycle of a cooling element in a metallurgical furnace | |
| CN107385131A (en) | It is a kind of to tackle the bosh furnace bosh restoration of lower stack blast-furnace soft water cooling means that instantaneously big heat impacts | |
| CN102401563B (en) | Water-cooling furnace cover of ladle refining furnace with high-temperature camera shooting function | |
| CN106319118B (en) | Method for prolonging service life of blast furnace copper cooling wall | |
| CN103984999B (en) | A kind of industrial circulating cooling water energy integrated optimization method | |
| CN107152709A (en) | A kind of efficient cascade utilization heating system that water is mixed with once net backwater | |
| CN112458222A (en) | Blast furnace tuyere small sleeve leakage detection device and leakage detection method | |
| CN203393172U (en) | Online adjusting system for heat load distribution of full-cooling-wall blast furnace | |
| CN201777655U (en) | High temperature resistant leak-proof rotary valve | |
| CN110299216A (en) | It is a kind of for the cooling apparatus of the interim cooling supply of nuclear power plant nuclear island and for cooling method | |
| CN215517504U (en) | Blast furnace iron runner | |
| CN207512199U (en) | A kind of drainage system for discharging State of Blast Furnace internal water accumulation | |
| CN201125250Y (en) | Blast furnace body soft water cooling structure | |
| CN202110043U (en) | Leakage detector for cooling device of blast furnace | |
| CN207214205U (en) | A kind of efficient cascade utilization heating system that water is mixed with once net backwater | |
| CN105838834B (en) | A kind of blast furnace cooling system remodeling method | |
| CN209098704U (en) | A kind of blast furnace furnace wall dual-cooled circulatory system | |
| CN105318735B (en) | A kind of utilization sintering low temperature waste heat cools down the device of circulation water of blast furnace | |
| CN110453023B (en) | Blast furnace hearth elephant foot erosion prevention and analysis method | |
| CN207418782U (en) | A kind of blast furnace top gearbox cooling system | |
| CN207002770U (en) | Assembled blast furnace cooling device | |
| CN206771701U (en) | Central air-conditioning condensate water recovery device and central air conditioner system | |
| CN202066038U (en) | Cooling water closed type internal circulation wet slag removal equipment | |
| CN205088268U (en) | Blast furnace cooling water control system |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171124 |