CN106282457B - Blast-furnace cooled water register and control method under a kind of baker state - Google Patents
Blast-furnace cooled water register and control method under a kind of baker state Download PDFInfo
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- CN106282457B CN106282457B CN201510281841.9A CN201510281841A CN106282457B CN 106282457 B CN106282457 B CN 106282457B CN 201510281841 A CN201510281841 A CN 201510281841A CN 106282457 B CN106282457 B CN 106282457B
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Abstract
Blast-furnace cooled water register and control method under a kind of baker state, it includes, jet chimney, one end is connected in the pipeline of the blast pipe at the top of blast-furnace cooled water degassing tank, another termination vapour source, the jet chimney set gradually the bypass line and by-passing valve at pressure-reducing valve, pressure gauge, hand off valve, blowoff valve, flowmeter, pneumatic control valve and connection pneumatic control valve both ends；Control valve is set in the blast pipe pipeline on the top of jet chimney Yu blast pipe junction；Steam lead, it is arranged in degassing tank, its upper end open, and it is connected to the port of export of degassing tank top vent pipe, steam lead insertion depth is away from degassing tank bottom, and steam lead tube wall circumferentially opens up some through holes, and those through holes are circumferentially spirally arranged obliquely downwards along steam lead；Thermo detector, located at connection blast furnace cooling stave and it is connected in the cooling water pipe pipeline of degassing tank；Controller, pneumatic control valve, by-passing valve, flowmeter, thermo detector are electrically connected the controller.
Description
Technical field
The present invention relates to blast furnace cooling technology, blast-furnace cooled water register and control under more particularly to a kind of baker state
Method.
Background technology
Blast furnace crucibe structure is mainly made up of stove skin, the resistance to material of huyashi-chuuka (cold chinese-style noodles), cooling wall, expansion ramming mass and carbon block.Blast furnace
The crystallization water of resistance to material in stove is mainly toasted and discharged by high temperature by the purpose of baker, closed for blast furnace crucibe pure water
The circulatory system, in the blast oven stage, due to the integrality of the resistance to material of cupola well, furnace heat is delivered to cooling wall heat during baker
Face is more slow, so being difficult to timely and effectively discharge the crystallization water of brick lining to a certain extent.It is in addition, existing pure
For watertight system because cannot get the heat in stove, water temperature is relatively low, if closed-cycle system circular flow, can only rise
Remained basically stable substantially with cooler-water temperature to the effect of cooling, that is, cooling wall huyashi-chuuka (cold chinese-style noodles) and hot-face temperature, this will cause heat
The face brick lining crystallization water is in retaining state, and reaction is played in the discharge to the bricking crystallization water, at present the conventional measure taken：1st, subtract
Few water circulating pump, using separate unit water pump operation；2nd, termination of pumping, cooling wall are in water stored state.Above-mentioned two measure programming rate phase
When slow, it is impossible to meet the requirement in current blast oven stage, terminating cooling wall hot-face temperature to blast oven slightly above cools down
Coolant-temperature gage, this to brick lining in blast furnace chamber crystallization moisture content exclusion be totally unfavorable.The heat riser is by steam and cooling
The direct sufficient heat exchange of water, it is inserted directly into using spiral discharge steam port in system degassing tank, equably conducts heat, during which
Producing certain gas, manually air bleeding valve is discharged, and the controlling of injecting quantity of steam is to reduce the play of degassing pressure inside the tank and water level
Strong fluctuation, to ensure that the stable circulation of sealing and circulating water system is run.
The content of the invention
It is an object of the invention to provide blast-furnace cooled water register and control method under a kind of baker state, effectively
Solve the problems, such as that the hot and cold face crystallization hydropexis of cooling wall, discharge be not smooth, so as to ensure that the maximum crystallization water of brick lining
Discharge capacity.
To reach above-mentioned purpose, the technical scheme is that：
The present invention carries out hot transmission using blast oven stage cupola well cooling wall cooler-water temperature is improved, by taking in steam
Method, it is as much as possible in time to improve the temperature of bricking to discharge bricking to improve the temperature in the hot face of cooling wall and huyashi-chuuka (cold chinese-style noodles)
The crystallization water and mortar moisture of laying bricks, solve effective exclusion of the brick lining in blast furnace chamber crystallization water.
Specifically, blast-furnace cooled water register under a kind of baker state of the present invention, it includes, jet chimney, one end
In the pipeline for the blast pipe being connected at the top of blast-furnace cooled water degassing tank, another termination vapour source, the jet chimney is set gradually
Pressure-reducing valve, pressure gauge, hand off valve, blowoff valve, flowmeter, pneumatic control valve and the bypass pipe at connection pneumatic control valve both ends
Road and by-passing valve；Control valve is set in the blast pipe pipeline on the top of jet chimney Yu blast pipe junction；Steam lead,
Be arranged in degassing tank, its upper end open, and be connected to the port of export of degassing tank top vent pipe, steam lead insertion depth away from
Degassing tank bottom, steam lead tube wall circumferentially opens up some through holes, and those through holes are circumferential spiral oblique along steam lead
Arrangement downwards；Thermo detector, it is arranged at connection blast furnace cooling stave and is connected in the cooling water pipe pipeline of degassing tank；Controller, institute
State pneumatic control valve, by-passing valve, flowmeter, thermo detector and be electrically connected the controller.
Further, at least one through hole is opened in the steam lead bottom.
Preferably, the steam lead bottom is away from degassing 200~500mm of pot bottom.
Pneumatic control valve of the present invention is temperature controlling unit, and cooling water temperature as needed automatically adjusts steam stream
Amount, into automated system, and sets the open range of automatic regulating valve, plays spacing control action.
By-passing valve is a protection device, and major function is to open the valve after the failure of pneumatic control valve 2, avoids steam
In disconnection state.
It is to be used to detect steam intake that flowmeter, which is set, accesses automated system, can monitor at any time.
Blowoff valve is mounted to scene, and function is that pipe-dredging effect is carried out before steam is passed through, and can be prevented in passage
Stockpile condensed water.
Hand off valve is to be shut on or off heating the operation valve that steam enters, and belongs to a control connection member.
After high steam introduces, depressurized by depressurizing valve regulation, meet the pressure that can be situated between needed for system, avoid pipeline pressure
Power is too high to destroy temperature control adjustment equipment and pipeline.
Perforate on steam lead, steam intake can be expanded, the impulsive force to degassing tank can be alleviated in addition, reduce degassing
Pressure inside the tank fluctuates, and on the premise of thermal heat transfer capability is expanded, while improves the operation stability of on-line system.
The method for regulating temperature of blast-furnace cooled water register under the baker state of the present invention, it is characterized in that, comprise the following steps：
1) register valve is in closed mode；
2) blowoff valve is opened；
3) hand off valve is slowly opened, when reaching aperture 5~10%, observation blowoff valve has steam discharge, preheats the dress
Put while whether observe steam unimpeded；
4) after blowoff valve discharge of steam is unimpeded, it is unchanged confirms that pressure gauge pointer has, then carries out Stress control, passes through
Pressure-reducing valve is adjusted until pressure gauge is controlled in 5~6kg；
5) by-passing valve is opened, blowoff valve is progressively closed to fully closed position, observes flowmeter changes in flow rate, then slowly open hand
Dynamic stop valve, reaches aperture 20~40%；
6) after flowmeter stability of flow, then the manual aperture control of pneumatic control valve progressively closes by-passing valve to 30~50%
To fully closed position, it is therefore an objective to which by-passing valve is progressively controlled by pneumatic control valve；
7) pneumatic control valve switches to automatic control state, the aperture of pneumatic control valve is set, in valve opening
It is 60% to limit MH setting values, and valve opening lower limit ML setting values 30%, after setting, pneumatic control valve, which switches to, automatically controls mould
Formula；
8) controlled according to cooling water pipe pipeline water temperature and keep 60~80 DEG C of scopes, adjust the aperture of pneumatic control valve, also
It is the vapor volume that control is passed through.
Blast furnace pure water sealing and circulating water system temperature-control adjustment device of the present invention, is installed on sealing and circulating water system degassing tank
Top, using the passage of manual exhaust pipe, steam pipe is directly inserted into degassing tank, the then perforate on steam lead, shape
Shape is spiral Pinhole-shaped, and purpose is on the one hand to increase steam injection, is on the other hand to strengthen steam in degassing tank
Interior generation circulation shape, it is a kind of systems stabilisation operation, the device of safety to reduce the impact to degassing tank.
The present invention uses steam heat transfer, by decompression, flow automatic control and adjustment device, the speed that can rise with water temperature
Spend chain control.
Pneumatic control valve sets automated location, and sets upper lower limit value, and the fluctuation range of steam flow is reduced in destination, and
Real-time tracking temperature rise speed.
Because steam-out (SO) pressure is high, decompressor is set, according to be passed through cooling water system pressure requirements can be needed to enter
Row control, prevents from being passed through too high steam pressure and destroying the on-line operation of expansion drum.
In order to reduce degassing pressure inside the tank impact, catheter body perforate can increase conduit drift diameter area, be advantageous to expand heat
Transmission capacity, while improve the operation stability of on-line system.
Beneficial effects of the present invention：
1) present invention is advantageous to mediate the free water and refractory material itself for manually adding or sucking naturally in work progress
The crystallization water；
2) present invention improves cooling wall recirculated water water temperature, can prevent refractory mortar from producing cracking because being dehydrated too fast, lead
Cause adhesive strength to reduce, influence service life；
3) present invention can prevent unshape refractory from producing surface because surface dewatering is too fast, internal vapor pressure is excessive
Cracking, causes intensity decreases, influences service life；
4) pace of change of temperature is controlled with for the purpose of even variation to realize that refractory brick internal temperature is homogeneous, reduces and build
Thermograde on body thickness direction, the heat for reducing or preventing refractory brick marshalling are burst apart；
5) the uniform stabilization of masonry internal temperature is realized, reduces and prevent masonry structure stress, and then produce
Structural breakage.
6) present invention solves is passed through the mode of steam to improve cooling wall water temperature online in closed-cycle system, so as to real
The temperature for improving cooling wall huyashi-chuuka (cold chinese-style noodles) and hot face is showed, has formed thermograde, be advantageous to the moisture discharge of resistance to material, extend blast furnace crucibe
The service life of resistance to material, so having promotional value.The device, which is contemplated, at present extends to Zhanjiang blast furnace, can also promote solution from now on
The certainly application of Similar Problems.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the structural representation of steam lead in the embodiment of the present invention.
Fig. 3 is the structural representation of blast furnace cooling stave thermo detector in the embodiment of the present invention.
Embodiment
Referring to Fig. 1~Fig. 3, blast-furnace cooled water register under a kind of baker state of the invention, it includes, jet chimney
1, one end is connected in the pipeline of the blast pipe 20 at the top of blast-furnace cooled water degassing tank 10, another termination vapour source, the steam pipe
Road 1 sets gradually pressure-reducing valve F1, pressure gauge P, hand off valve F2, blowoff valve F3, flowmeter FE, pneumatic control valve F4 and connection
The bypass line 101 and by-passing valve F5 at pneumatic control valve F4 both ends；Positioned at the top of jet chimney 1 Yu the junction of blast pipe 20
Control valve F6 is set in blast pipe pipeline；Steam lead 2, it is arranged in degassing tank 10, its upper end open, and is connected to degassing tank
The port of export of 10 top vent pipes 101, the insertion depth of steam lead 2 are circumferentially opened away from the bottom of degassing tank 10, the tube wall of steam lead 2
If some through holes 21, and those through holes 21 are spirally arranged obliquely downwards along steam lead 2 is circumferential；Thermo detector TT, the company of being arranged at
Connect blast furnace cooling stave 30 and be connected in the pipeline of cooling water pipe 40 of degassing tank 10；Controller (not shown), the pneumatic tune
Section valve F4, by-passing valve F5, flowmeter FE, thermo detector TT are electrically connected the controller.
In Fig. 1, Fig. 3, last furnace shell 70, furnace lining 80, the return pipe 60 of degassing tank 10, expansion drum 50.
Further, at least one through hole 22 is opened in the bottom of steam lead 2.
Preferably, the bottom of steam lead 2 is away from the position of 10 bottom of degassing tank 1/3 or 300mm.
Embodiment
The operating process of cooling water temperature control regulation of the present invention is as follows：
1) register valve is in closed mode；
2) blowoff valve is opened；
3) hand off valve is slowly opened, when reaching aperture 5%, observation blowoff valve has steam discharge, and it is same to preheat the device
When observe steam it is whether unimpeded；
4) after blowoff valve discharge of steam is unimpeded, it is unchanged confirms that pressure gauge pointer has, then carries out Stress control, passes through
Pressure-reducing valve is adjusted until pressure gauge is controlled in 5kg；
5) by-passing valve is opened, blowoff valve is progressively closed to fully closed position, observes flowmeter changes in flow rate, then slowly open hand
Dynamic stop valve, reaches aperture 20~40%；
6) after flowmeter stability of flow, pneumatic control valve manual aperture control to 30%, by-passing valve is then progressively closed to complete
Off-position, it is therefore an objective to which by-passing valve is progressively controlled by pneumatic control valve；
7) pneumatic control valve switches to automatic control state, the aperture of pneumatic control valve is set, in valve opening
It is 60% to limit MH setting values, and valve opening lower limit ML setting values 30%, after setting, pneumatic control valve, which switches to, automatically controls mould
Formula；
8) controlled according to cooling water pipe pipeline water temperature and keep 60~80 DEG C of scopes, adjust the aperture of pneumatic control valve, also
It is the vapor volume that control is passed through.
Claims (4)
- A kind of 1. blast-furnace cooled water register under baker state, it is characterised in that including,Jet chimney, one end are connected in the pipeline of the blast pipe at the top of blast-furnace cooled water degassing tank, another termination vapour source, should Jet chimney sets gradually pressure-reducing valve, pressure gauge, hand off valve, blowoff valve, flowmeter, pneumatic control valve and the pneumatic tune of connection Save the bypass line and by-passing valve at valve both ends；Set in the blast pipe pipeline on jet chimney with the top of blast pipe junction Control valve；Steam lead, it is arranged in degassing tank, its upper end open, and is connected to the port of export of degassing tank top vent pipe, steam For tube insertion depth away from degassing tank bottom, steam lead tube wall circumferentially opens up some through holes, and those through holes are along steam lead It is circumferential spirally to arrange obliquely downwards；Thermo detector, it is arranged at connection blast furnace cooling stave and is connected in the cooling water pipe pipeline of degassing tank；Controller, the pneumatic control valve, by-passing valve, flowmeter, thermo detector are electrically connected the controller.
- 2. blast-furnace cooled water register under baker state as claimed in claim 1, it is characterised in that the steam lead bottom Open at least one through hole in portion.
- 3. blast-furnace cooled water register under baker state as claimed in claim 1 or 2, it is characterised in that the steam is led Pipe bottom is away from degassing 200~500mm of pot bottom.
- 4. the method for regulating temperature of blast-furnace cooled water register under baker state as claimed in claim 1, it is characterized in that, including such as Lower step：1) check that register valve is in closed mode；2) blowoff valve is opened；3) hand off valve is slowly opened, when reaching aperture 5~10%, observation blowoff valve has steam discharge, and it is same to preheat the device When observe steam it is whether unimpeded；4) after blowoff valve discharge of steam is unimpeded, it is unchanged confirms that pressure gauge pointer has, then carries out Stress control, passes through regulation Pressure-reducing valve is until pressure gauge is controlled in 5~6kg；5) by-passing valve is opened, blowoff valve is progressively closed to fully closed position, observes flowmeter changes in flow rate, then slowly open and cut manually Disconnected valve, reaches aperture 20~40%；6) after flowmeter stability of flow, pneumatic control valve manual aperture control to 30~50%, by-passing valve is then progressively closed to complete Off-position, it is therefore an objective to which by-passing valve is progressively controlled by pneumatic control valve；7) pneumatic control valve switches to automatic control state, and the aperture of pneumatic control valve is set, valve opening upper limit MH Setting value is 60%, and valve opening lower limit ML setting values 30%, after setting, pneumatic control valve switches to automatic control mode；8) controlled according to cooling water pipe pipeline water temperature and keep 60~80 DEG C of scopes, adjust the aperture of pneumatic control valve, that is, control Make the vapor volume being passed through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281841.9A CN106282457B (en) | 2015-05-28 | 2015-05-28 | Blast-furnace cooled water register and control method under a kind of baker state |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281841.9A CN106282457B (en) | 2015-05-28 | 2015-05-28 | Blast-furnace cooled water register and control method under a kind of baker state |
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| Publication Number | Publication Date |
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| CN106282457A CN106282457A (en) | 2017-01-04 |
| CN106282457B true CN106282457B (en) | 2018-03-09 |
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| CN201510281841.9A Active CN106282457B (en) | 2015-05-28 | 2015-05-28 | Blast-furnace cooled water register and control method under a kind of baker state |
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| CN115466809B (en) * | 2021-06-10 | 2023-10-17 | 宝山钢铁股份有限公司 | Control method for cooling system of blast furnace baking furnace |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417350A (en) * | 2001-11-09 | 2003-05-14 | 武汉钢铁设计研究总院 | Joint soft water sealing and circular cooling system |
| CN201981217U (en) * | 2010-12-29 | 2011-09-21 | 北京京诚科林环保科技有限公司 | Circulating cooling water system of small blast-furnace tuyere sleeve |
| CN102321775A (en) * | 2011-09-26 | 2012-01-18 | 中冶南方工程技术有限公司 | Novel combined soft water closed circulation cooling system |
| CN202705384U (en) * | 2012-07-17 | 2013-01-30 | 李成锋 | Automatic control device for blast furnace cooling water |
| CN203159644U (en) * | 2013-04-03 | 2013-08-28 | 武汉钢铁(集团)公司 | Controllable blast furnace cooling system |
| CN203393172U (en) * | 2013-08-12 | 2014-01-15 | 武汉钢铁(集团)公司 | Online adjusting system for heat load distribution of full-cooling-wall blast furnace |
| CN203411556U (en) * | 2013-08-15 | 2014-01-29 | 北京首钢国际工程技术有限公司 | Closed circulating cooling system of soft water for blast furnace |
-
2015
- 2015-05-28 CN CN201510281841.9A patent/CN106282457B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417350A (en) * | 2001-11-09 | 2003-05-14 | 武汉钢铁设计研究总院 | Joint soft water sealing and circular cooling system |
| CN201981217U (en) * | 2010-12-29 | 2011-09-21 | 北京京诚科林环保科技有限公司 | Circulating cooling water system of small blast-furnace tuyere sleeve |
| CN102321775A (en) * | 2011-09-26 | 2012-01-18 | 中冶南方工程技术有限公司 | Novel combined soft water closed circulation cooling system |
| CN202705384U (en) * | 2012-07-17 | 2013-01-30 | 李成锋 | Automatic control device for blast furnace cooling water |
| CN203159644U (en) * | 2013-04-03 | 2013-08-28 | 武汉钢铁(集团)公司 | Controllable blast furnace cooling system |
| CN203393172U (en) * | 2013-08-12 | 2014-01-15 | 武汉钢铁(集团)公司 | Online adjusting system for heat load distribution of full-cooling-wall blast furnace |
| CN203411556U (en) * | 2013-08-15 | 2014-01-29 | 北京首钢国际工程技术有限公司 | Closed circulating cooling system of soft water for blast furnace |
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| CN106282457A (en) | 2017-01-04 |
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