CN109295272A - Blast furnace sealed cooling system temperature control adjusting method - Google Patents
Blast furnace sealed cooling system temperature control adjusting method Download PDFInfo
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- CN109295272A CN109295272A CN201710608853.7A CN201710608853A CN109295272A CN 109295272 A CN109295272 A CN 109295272A CN 201710608853 A CN201710608853 A CN 201710608853A CN 109295272 A CN109295272 A CN 109295272A
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- water
- temperature difference
- cooling system
- temperature
- blast furnace
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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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- Manufacturing & Machinery (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
Abstract
The invention discloses a kind of blast furnace sealed cooling system temperature to control to adjust method, the process employs the regulating valves that the automatic control with temperature detection is mounted on return water collector, picture will be controlled in real-time monitoring temperature feedback, and temperature upper limit and alarm screen are set, by the control module programming to regulating valve, the automatic adjustment of cooling water flow is realized.And the foundation of flow adjustment is automatically adjusted according to the drainage temperature difference detected; realize that adjustment cooling water inflow is in time to adapt to cooling system to the actual needs of cooling water; after being got in touch with without construction personnel by intercom and central control room personnel; the adjustment that scene carries out cooling water inflow using manually-operated gate is arrived again; obviously and labor intensity is reduced, while also protects the service life of cold i.e. system and blast furnace.
Description
Technical field
The present invention relates to blast furnace on-line cooling, in particular to blast-furnace body cooled region emphasis is cooling, that is, blast furnace is close
Cooling system temperature control adjusting method is closed, implementing the adjusting method can solve blast furnace in process of production because of furnace body regional area temperature
Degree unexpected abnormality variation occurs cooler water temperature and is ramping up the service life for influencing cooler, to play to a certain extent
Immediately strengthen cooling purpose.
Background technique
The important task that blast furnace sealed cooling system has born protection furnace shell, maintained reasonable furnace, so protecting cooling
Equipment is one of blast furnace quantity-produced important measures.In general, blast furnace cooling system is divided into four areas in a circumferential direction
Domain controls respectively.In each region, cooling system can be divided into from top to bottom a string on earth, and be divided into several sections of form.Actually make
With in the process, long afterwards, the leak into furnace caused by the damage because cooling down equipment, the harm of leak is not only broken up in furnace some blast furnaces use
Bricking, thus cause furnace skin it is rubescent, until furnace skin crack, if in addition will also result in fuel ratio rise, furnace condition anterograde be deteriorated etc.,
Occurrence of large-area cools down equipment leak, will cause the serious accident of gobbed up when serious.To find out its cause, mainly traditional is close
Closing the type of cooling, there are the following problems:
1, the operation of the cooling equipment of shaft is in around shaft, operating environment is chronically at the evil such as coal gas, dust, high temperature
Bad condition, especially night, since the densely arranged narrow space for leading to live platform of sealed cooling system pipeline limits, in addition
By extreme influence, large labor intensity when the factors such as lighting condition is poor, noise is exceeded, operator carry out operation at the scene.
2, shaft sealed cooling system generally uses return water collector installation flowmeter according to design and thermometer is examined
It surveys, but the data of collector acquisition are the cooling water mixing temperature of more cooling branch pipes and the total flow of Duo Gen branch pipe.Once
The rising of shaft local temperature is encountered, water adjustment can only be carried out by the main valve of collector, the result of generation is exactly that water temperature difference is not high
Cooling branch pipe passively increase water, do not meet water supply overall balance technique requirement, so for water temperature difference manager
The operation adjustment specific aim in face is not just much of that.
3, furnace body temperature rises corresponding cooling device temperature and rises, and middle control monitoring screen has display at this time, sometimes
Encounter in the case that furnace body temperatures at localized regions is ramping up, it is exceeded according to collector water temperature difference, operator rush towards scene into
The adjustment of row hand-operated valve water, but be to need certain time from discovery to execute-in-place, when staying in adjustment, temperature alreadys exceed water
50% or more temperature difference administrative standard is even higher, and this adjustment mode already belongs to lag, and operation poor in timeliness affects cold
But the heat transfer effect of system, multiple high temperature impact, hence it is evident that be the service life for affecting cooling system.
It can be seen that operative employee monitors that shaft local direction is cooling by middle control monitoring screen in traditional cooling procedure
The transient change value of coolant-temperature gage, by real time temperature to determine whether needing to carry out the cooling water inflow adjustment of the direction.Due to
It there are the regular hour is poor in daily operation, changes suddenly once encountering furnace body temperature, it is necessary to utilize hand to scene
Movable valve carries out operation adjustment, and the adjustment amount of water and the changing value of temperature also need to join by intercom and middle control personnel
Network is known.Obviously other than field operation large labor intensity, the service life to blast furnace is also unfavorable.
Summary of the invention
The purpose of the present invention is the temperature adjustings for the closed type of cooling of blast furnace there is a problem of above-mentioned, provides a kind of temperature
Degree adjusts with strong points, reflection speed fastly and can reduce the blast furnace sealed cooling system temperature control tune of labor intensity of operating staff
Section method.
To achieve the goals above, the present invention adopts the following technical scheme:
The blast furnace sealed cooling system temperature controls to adjust method and includes the following steps,
Blast furnace sealed cooling system is divided into four sub- cooling systems in region, four sub- cooling systems in region in circumferencial direction by a
System mutually concatenates from top to bottom, forms a sealed cooling system for coating blast furnace；
B, each sub- cooling system are provided with return water collector and return branch, and return branch comes together in return water collector and formation
Water circulation system；
C, is respectively provided with return water branch valve in each return branch, the water flow for being opened and closed on branch pipe,
A kind of electric control valve of automatic control return water collector water flow with temperature detection is arranged in d on return water collector；
E, setting one can in rate-determining steps d electric control valve control module, with realize the water flow of cooling system from
It is dynamic to adjust.
It further include step f between the step d and e, that is, the in due course temperature of the cooling system real-time monitored is anti-
Be fed to middle controlling temperature monitoring system, and according to setting temperature upper limit and alarm screen, to the control module issue whether
The instruction of work.
Solidifying in the control module has the water temperature difference for forming the water inlet of cooling system with draining to be converted to digital letter
Number, carry out again data identification, number execute signal program, for control return water collector water flow electric control valve unlatching with
Closure.
In the control module cured program mainly can the circumferencial direction water dynamic to cooling system adjust, reduce water
Region water of the temperature difference without significant change improves the water of water temperature difference sharply riser region.
The circumferencial direction water dynamic adjustment to cooling system follows following logic and adjusts:
It, will since the method for the present invention is using the regulating valve for being mounted with the automatic control with temperature detection on return water collector
Picture is controlled in real-time monitoring temperature feedback, and temperature upper limit and alarm screen are set, passes through the control module to regulating valve
Programming, realizes the automatic adjustment of cooling water flow.
And the foundation of flow adjustment is automatically adjusted according to the drainage temperature difference detected, realization adjusts cold in time
But water passes through intercom and central control room personnel without construction personnel to adapt to cooling system to the actual needs of cooling water
After being got in touch with, then to scene using the adjustment of manually-operated gate progress cooling water inflow, it is clear that and labor intensity is reduced, while also protecting
The service life of cold i.e. system and blast furnace is protected.
Detailed description of the invention
Fig. 1 is the return water collector distribution schematic diagram of the cooling system of the present invention high furnace outer wall to be cooled down cladding.
Fig. 2 is blast furnace of the present invention, cooling system, control principle schematic diagram.
Fig. 3 is control method basic process brief description schematic diagram of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, to do one to the present invention described in more detail.
In order to allow reader that the present invention can be more completely understood, please referring initially to shown in Fig. 1, Fig. 2, to cooling of the invention
System is explained as follows:
The return water collector 10 of cooling system of the invention is from bottom to top to be arranged in high furnace outer wall, blast furnace from bottom to top each
Part be cupola well, bosh, furnace bosh, restoration of lower stack, shaft middle part, upper shaft, furnace throat, blast furnace be followed successively by from inside to outside resistance to material,
Cooling equipment, furnace skin.Entire high furnace outer wall is placed with return water collector 10 and return branch 11, passes through between return water collector 10 cold
But wall liaison tube 12 is connected.13 be return branch flowmeter, and 14 be return branch feed water valve.
In Fig. 2, the plan structure of a quarter of 20 furnace roof of blast furnace is only illustrated, the return branch 11 of cooling system,
Return water collector 10 is sequentially arranged in the periphery of blast furnace 20 from inside to outside, and 21 be cooling wall, in return branch 11 and return water collector 10
Between be additionally provided with return water branch valve 22, return branch 11 is that four water pipes are one group.
In Fig. 2, control module 30 is to the electric adjustable valve section valve 31 being arranged on the main pipe 33 being connected with return water collector 10
The control opened and be closed.
The also electric control valve 50 in middle controlling temperature monitoring system 40 and other regions to connect with control module 30,
The electric control valve 50 in other regions, which refers to, herein is coated on the electronic of high furnace outer wall and identical cooling system shown in this Fig. 2
Regulating valve.
Blast furnace sealed cooling system temperature of the invention controls to adjust method and is namely based on above-mentioned cooling system,
Its main rate-determining steps is as follows；
Blast furnace sealed cooling system is divided into four sub- cooling systems in region, four sub- cooling systems in region in circumferencial direction by a
System mutually concatenates from top to bottom, forms a sealed cooling system for coating blast furnace；
B, each sub- cooling system are provided with return water collector 10 and return branch 11, and return branch 11 comes together in return water collection
Pipe 10 and formation water circulation system；
C, is respectively provided with return water branch valve 22 in each return branch 11, the water flow for being opened and closed on branch pipe,
A kind of motorized adjustment of automatic control 10 water flow of return water collector with temperature detection is arranged in d on return water collector 10
Valve 31；
E, setting one can in rate-determining steps d electric control valve 31 control module 30, to realize the water flow of cooling system
Amount automatic adjustment.
It further include step f between the step d and e, that is, the in due course temperature of the cooling system real-time monitored is anti-
It is fed to middle controlling temperature monitoring system 40, and according to setting temperature upper limit and alarm screen, the control module 30 is issued
The instruction whether to work.
It please refers to shown in Fig. 3, solidifying in the control module 30 has the water for forming the water inlet of cooling system with draining
The program that the temperature difference is converted to digital signal, carries out data identification, number execution signal again, for controlling the electricity of return water collector water flow
The unlatching and closure of dynamic regulating valve 31.
In the control module 30 cured program mainly can the circumferencial direction water dynamic to cooling system adjust, reduce
Region water of the water temperature difference without significant change improves the water of water temperature difference sharply riser region.
In view of the heat distribution of blast furnace circumferencial direction is there are non-uniform situation, especially local air flow fluctuation is cooling
Device hot-face temperature steeply rises, and may cause the situation of cooler water pipe breakage, adjusts to circumferencial direction water dynamic, reduces water
Region water of the temperature difference without significant change improves the water of water temperature difference sharply riser region, to the circumferencial direction water of cooling system
Amount dynamic adjustment follows following logic adjustment:
Note: water adjusts the average value that radix is total Water
Can be seen that water Adjusted Option again from above-mentioned logical table can be described as follows:
Water temperature difference is very poor when being less than or equal to 5 DEG C, mean allocation；
Water temperature difference it is very poor be less than or equal to 5-10 DEG C when, then temperature difference highest zone increase by 200, temperature difference lowermost extent subtracts 200；
Water temperature difference it is very poor be less than or equal to 10-15 DEG C when, then temperature difference highest zone increase by 400, temperature difference lowermost extent subtracts 400；
Water temperature difference it is very poor be less than or equal to 15-20 DEG C when, then temperature difference highest zone increase by 600, temperature difference lowermost extent subtracts 600；
Water temperature difference it is very poor be less than or equal to 20-25 DEG C when, then temperature difference highest zone increase by 800, temperature difference lowermost extent subtracts 600；
Water temperature difference is very poor when being greater than 25 DEG C, then temperature difference highest zone increases by 1000, and temperature difference lowermost extent subtracts 1000.
Foregoing description through this embodiment can be seen that since present invention employs be mounted with band temperature on return water collector
The regulating valve for spending the automatic control of detection will control picture in real-time monitoring temperature feedback, and temperature upper limit and alarm be arranged
Picture is programmed by the control module to regulating valve, realizes the automatic adjustment of cooling water flow.The foundation of flow adjustment is basis
The drainage temperature difference detected is automatically adjusted, and realizes that adjustment cooling water inflow is in time to adapt to cooling system to cooling water
Actual needs, after being got in touch with without construction personnel by intercom and central control room personnel, then to scene using hand-operated valve
Door carries out the adjustment of cooling water inflow, it is clear that and labor intensity is reduced, while also protecting the service life of cold i.e. system and blast furnace.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as the change in spirit of the invention, to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (5)
1. a kind of blast furnace sealed cooling system temperature controls to adjust method, this approach includes the following steps,
Blast furnace sealed cooling system is divided into four sub- cooling systems in region in circumferencial direction by a, four sub- cooling systems in region from
Under to upper phase concatenate, formed one by blast furnace coat sealed cooling system；
B, each sub- cooling system are provided with return water collector and return branch, and return branch comes together in return water collector and forms water and follows
Loop system；
C, is respectively provided with return water branch valve in each return branch, the water flow for being opened and closed on branch pipe,
It is characterized by:
A kind of electric control valve of automatic control return water collector water flow with temperature detection is arranged in d on return water collector；
E, setting one can in rate-determining steps d electric control valve control module, to realize that the water flow of cooling system is adjusted automatically
Section.
2. blast furnace sealed cooling system temperature as described in claim 1 controls to adjust method,
It is characterized by:
It further include step f between the step d and e, that is, arrive the in due course temperature feedback of the cooling system real-time monitored
Middle controlling temperature monitoring system, and according to setting temperature upper limit and alarm screen, whether work the control module sending
Instruction.
3. blast furnace sealed cooling system temperature as claimed in claim 1 or 2 controls to adjust method,
It is characterized by:
Solidifying in the control module has the water temperature difference for forming the water inlet of cooling system with draining to be converted to digital signal, again
Carry out data identification, number executes the program of signal, the unlatching and closure of the electric control valve for controlling return water collector water flow.
4. blast furnace sealed cooling system temperature as claimed in claim 3 controls to adjust method,
It is characterized by:
In the control module cured program mainly can the circumferencial direction water dynamic to cooling system adjust, reduce water temperature difference
Region water without significant change improves the water of water temperature difference sharply riser region.
5. blast furnace sealed cooling system temperature as claimed in claim 4 controls to adjust method,
It is characterized in that, the circumferencial direction water dynamic adjustment to cooling system follows following logic and adjusts: when,
Water temperature difference is very poor when being less than or equal to 5 DEG C, and water Adjusted Option is mean allocation；
Water temperature difference it is very poor be less than or equal to 5-10 DEG C when, then temperature difference highest zone increase by 200, temperature difference lowermost extent subtracts 200；
Water temperature difference it is very poor be less than or equal to 10-15 DEG C when, then temperature difference highest zone increase by 400, temperature difference lowermost extent subtracts 400；
Water temperature difference it is very poor be less than or equal to 15-20 DEG C when, then temperature difference highest zone increase by 600, temperature difference lowermost extent subtracts 600；
Water temperature difference it is very poor be less than or equal to 20-25 DEG C when, then temperature difference highest zone increase by 800, temperature difference lowermost extent subtracts 600；
Water temperature difference is very poor when being greater than 25 DEG C, then temperature difference highest zone increases by 1000, and temperature difference lowermost extent subtracts 1000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710608853.7A CN109295272A (en) | 2017-07-25 | 2017-07-25 | Blast furnace sealed cooling system temperature control adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710608853.7A CN109295272A (en) | 2017-07-25 | 2017-07-25 | Blast furnace sealed cooling system temperature control adjusting method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06322418A (en) * | 1993-05-14 | 1994-11-22 | Nippon Steel Corp | Device for cooling furnace body in blast furnace |
| JPH0734110A (en) * | 1993-07-16 | 1995-02-03 | Nippon Steel Corp | Method for cooling wall of blast furnace |
| CN1896570A (en) * | 2006-06-02 | 2007-01-17 | 宝山钢铁股份有限公司宝钢分公司炼铁厂 | Automatic adjusting valve and system for blast-furnace cooled water |
| CN101177719A (en) * | 2006-11-07 | 2008-05-14 | 首钢总公司 | Sectional-control cooling facility for high furnace |
| KR20110007283A (en) * | 2009-07-16 | 2011-01-24 | (주)하존 | Method automatic sensing of smelting furnace colling |
| CN103215397A (en) * | 2013-04-03 | 2013-07-24 | 武汉钢铁(集团)公司 | Regulable blast furnace cooling system and blast furnace cooling method |
| CN203159644U (en) * | 2013-04-03 | 2013-08-28 | 武汉钢铁(集团)公司 | Controllable blast furnace cooling system |
| CN106119450A (en) * | 2016-07-19 | 2016-11-16 | 武汉钢铁股份有限公司 | A kind of blast furnace body soft water sealed cooling system and blast furnace cooling means |
| CN106498106A (en) * | 2017-01-06 | 2017-03-15 | 中冶华天工程技术有限公司 | Modified blast furnace soft water closed circulation system and method |
-
2017
- 2017-07-25 CN CN201710608853.7A patent/CN109295272A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06322418A (en) * | 1993-05-14 | 1994-11-22 | Nippon Steel Corp | Device for cooling furnace body in blast furnace |
| JPH0734110A (en) * | 1993-07-16 | 1995-02-03 | Nippon Steel Corp | Method for cooling wall of blast furnace |
| CN1896570A (en) * | 2006-06-02 | 2007-01-17 | 宝山钢铁股份有限公司宝钢分公司炼铁厂 | Automatic adjusting valve and system for blast-furnace cooled water |
| CN101177719A (en) * | 2006-11-07 | 2008-05-14 | 首钢总公司 | Sectional-control cooling facility for high furnace |
| KR20110007283A (en) * | 2009-07-16 | 2011-01-24 | (주)하존 | Method automatic sensing of smelting furnace colling |
| CN103215397A (en) * | 2013-04-03 | 2013-07-24 | 武汉钢铁(集团)公司 | Regulable blast furnace cooling system and blast furnace cooling method |
| CN203159644U (en) * | 2013-04-03 | 2013-08-28 | 武汉钢铁(集团)公司 | Controllable blast furnace cooling system |
| CN106119450A (en) * | 2016-07-19 | 2016-11-16 | 武汉钢铁股份有限公司 | A kind of blast furnace body soft water sealed cooling system and blast furnace cooling means |
| CN106498106A (en) * | 2017-01-06 | 2017-03-15 | 中冶华天工程技术有限公司 | Modified blast furnace soft water closed circulation system and method |
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Application publication date: 20190201 |