CN103215397B - Regulable blast furnace cooling system and blast furnace cooling method - Google Patents
Regulable blast furnace cooling system and blast furnace cooling method Download PDFInfo
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- CN103215397B CN103215397B CN201310113587.2A CN201310113587A CN103215397B CN 103215397 B CN103215397 B CN 103215397B CN 201310113587 A CN201310113587 A CN 201310113587A CN 103215397 B CN103215397 B CN 103215397B
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Abstract
The invention relates to a regulable blast furnace cooling system. The regulable blast furnace cooling system comprises a plurality of cooling wall bodies arranged on the inner wall of a shell of a blast furnace, wherein the cooling wall bodies are arranged along the circumferential direction of the blast furnace and installed in a multi-layer manner in the height direction, each cooling wall body is internally provided with at least one cooling water runner, two ends of each cooling water runner are respectively connected with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe penetrate out of the shell of the blast furnace and are respectively provided with a temperature measurement sensor, a flow sensor is installed on the water inlet pipe or the water outlet pipe, the cooling wall bodies are also provided with temperature measurement sensors, the water inlet pipe and the water outlet pipe in each group are respectively communicated with each other through a communicating pipe, and a regulating valve is arranged on each communicating pipe. A blast furnace cooling method comprises the steps of: 1) aiming at the cooling water runners in all the cooling wall bodies of the blast furnace, communicating the water inlet pipe(s) and the water outlet pipe(s) of one or more cooling water runners positioned in the same layer of cooling wall bodies of the blast furnace through bypasses of the communicating pipes provided with the regulating valves; and 2) controlling the opening of the regulating valves to increase or decrease the flow in the corresponding cooling water runner.
Description
Technical field
The present invention relates to blast furnace cooling system, particularly a kind of regulatable blast furnace cooling system and blast furnace method of cooling.
Background technology
Blast furnace cooling apparatus, for safeguarding reasonably the operation type of furnace and protection body of heater, is the requisite equipment of operation of blast furnace.Existing blast furnace cooling apparatus mostly adopts the constant flux water supply mode of connecting from bottom to top, this constant flux water supply mode has significant limitation: namely can not meet the requirement to the water yield when cooling apparatus high heat load, can cause the waste of water coolant and excessive heat exhaustion again in the normal production time because the water yield is superfluous; Meanwhile, during blast fumance, different heights, different interval temperature and slag crust situation are different, and required Local cooling requirement of strength is also different.When blast furnace or its local producer cool or when tying thick, the cooling of normal intensity only can make the working of a furnace to evil, and blast furnace can only adjust the working of a furnace by the adjustment of crude fuel, not only consuming time longer, and need consume more fuel; Otherwise when blast furnace or its local furnace condition disorder, existing cooling apparatus cannot provide the big yield needed for high heat load, often causes cooling apparatus temperature too high and causes the lost of life or premature breakdown.
For above-mentioned condition, certain iron work domestic applies a kind of temperature difference free-standing regulation system, the principle of work of this system is: make the water-in and water-out of cooling stave flow through the upper water cavity of TEMPERATURE DIFFERENCE SELF-POWER ADJUSTING VALVE and lower water cavity respectively, the Inlet and outlet water temperature difference is converted to thrust and promotes spool by TEMPERATURE DIFFERENCE SELF-POWER ADJUSTING VALVE, the aperture of direct by-pass valve control, thus reach the object automatically regulating cooling water inflow.Although this system can meet cooling requirement, also save with water, reduce energy consumption, but on the one hand, the controling parameters of each TEMPERATURE DIFFERENCE SELF-POWER ADJUSTING VALVE is once cannot active adjustment after setting, so change along with the situation of operation of blast furnace, best cooling water inflow control effects just cannot be reached; On the other hand, due to the direct-operated regulator quantity on whole blast furnace cooling apparatus large (tens of even up to a hundred), set the controling parameters complex operation of TEMPERATURE DIFFERENCE SELF-POWER ADJUSTING VALVE one by one, and need the long period, cause existing necessarily delayed to the control of cooling water inflow.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of regulatable blast furnace cooling system and blast furnace method of cooling, automatically cooling water inflow can be regulated by setup parameter according to the size of thermal load, or according to the cooling intensity needing active adjustment blast furnace local of blast furnace operating, make blast furnace Local cooling effect close to best, and save cooling water amount.
For solving the problems of the technologies described above, the regulatable blast furnace cooling system of one provided by the invention, comprise the some cooling stave bodies being arranged at last furnace shell inwall, cooling stave body along blast furnace circumferentially and install multilayer continuously in the height direction, at least one cooling water flow conduits is equipped with in each cooling stave body, cooling water flow conduits two ends connect cooling stave water inlet pipe and rising pipe respectively, water inlet pipe and rising pipe pass last furnace shell and it are separately installed with temperature probe, water inlet pipe or rising pipe are provided with flow sensor, cooling stave body is also provided with temperature probe, on vertical direction, the intrinsic cooling water flow conduits of each layer cooling stave is connected in series, its special feature is: often organize water inlet pipe and be connected respectively by communicating pipe with rising pipe, communicating pipe is provided with variable valve, the signal output part of each temperature probe and flow sensor and the topworks of each variable valve connection control system respectively, for controlling the aperture of described variable valve.
The regulatable blast furnace cooling system of another kind provided by the invention, comprise the some cooling stave bodies being arranged at last furnace shell inwall, cooling stave body along blast furnace circumferentially and install multilayer continuously in the height direction, at least one cooling water flow conduits is equipped with in each cooling stave body, cooling water flow conduits two ends connect cooling stave water inlet pipe and rising pipe respectively, water inlet pipe and rising pipe pass last furnace shell and it are separately installed with temperature probe, water inlet pipe or rising pipe are provided with flow sensor, and cooling stave body is also provided with temperature probe; On vertical direction, the intrinsic cooling water flow conduits of each layer cooling stave is connected in series, its special feature is: at least two water inlet pipes be on blast furnace same layer cooling stave body are connected by water inlet group connecting leg, corresponding at least two rising pipes are connected by water outlet group union, water inlet group connecting leg is connected by communicating pipe with corresponding water outlet group union, communicating pipe is provided with variable valve, the signal output part of each temperature probe and flow sensor and the topworks of each variable valve connection control system respectively, for controlling the aperture of described variable valve.
In technique scheme, described variable valve is motor-driven control valve, pneumatic adjusting valve or electric liquid variable valve.
In technique scheme, described communicating pipe is also provided with throttling element.
A kind of blast furnace method of cooling provided by the invention, comprises the steps:
1) for the intrinsic cooling water flow conduits of the whole cooling stave of blast furnace, by being in the water inlet pipe of one or more cooling water flow conduits in blast furnace same layer cooling stave body and rising pipe by communicating pipe bypass, every a connecting pipe arranges variable valve;
2) regulating and controlling valve opening, increases or reduces the flow in corresponding cooling water flow conduits, to adjust the cooling intensity in the blast furnace region corresponding to cooling water flow conduits.
The described step 2 of technique scheme) in, need according to blast furnace cooling the water-in and water-out temperature difference △ t setting each cooling water flow conduits
0, monitor the actual water-in and water-out temperature difference △ t of each cooling water flow conduits, as △ t>=△ t
0time, reduce corresponding control valve opening, to increase the flow by this cooling water flow conduits; As △ t < △ t
0time, strengthen corresponding control valve opening, to be reduced by the flow of this cooling water flow conduits.
Further, described △ t
0it is 0.05 ~ 13 DEG C.
Compared with prior art, beneficial effect of the present invention is: be provided with being communicated with rising pipe by water inlet pipe communicating pipe of band variable valve, and make the signal output part of each temperature probe and flow sensor, topworks's connection control system respectively of variable valve, each temperature probe can be received by Controlling System, the temperature of flow sensor, data on flows, analysis and calculation is carried out in conjunction with set(ting)value, judge thermal load and the slag crust situation of each measured zone, calculate the cooling intensity needed for this region accordingly, and regulated by the automatic aperture of variable valve, achieve the bypass regulation and control of cooling water flow, the precision of regulation and control can reach a certain bar cooling water flow conduits near zone of blast furnace layer, when needing the cooling intensity regulating blast furnace or its local, also directly can control corresponding variable valve by Controlling System and realizing fast, easily.
Accompanying drawing explanation
Fig. 1 is structure and the principle of work schematic diagram of present system embodiment 1 one structural units.
Fig. 2 is structure and the principle of work schematic diagram of present system embodiment 2 one structural units.
In figure: 1-cooling stave body, 2,5,10-temperature probe, 3-flow sensor, 4-variable valve, 6-rising pipe, 7-cooling water flow conduits, 8-water inlet pipe, 9-communicating pipe, 11-throttling element, 12-water inlet group connecting leg, 13-water outlet group connecting leg.
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are described in further detail.
Embodiment 1
Of the present invention a kind of can the blast furnace cooling system of active control cooling intensity, comprise the some cooling stave bodies 1 being arranged at last furnace shell inwall, cooling stave body 1 is along blast furnace circumferentially and install multilayer continuously in the height direction.As shown in Figure 1, four cooling water flow conduits 7 are provided with in each cooling stave body 1, cooling water flow conduits 7 two ends connect cooling stave water inlet pipe 8 and rising pipe 6 respectively, and water inlet pipe 8 and rising pipe 6 pass last furnace shell and it be separately installed with temperature probe 2,5, and rising pipe 6 is provided with flow sensor 3.Cooling stave body 1 also has thermometer hole, and temperature probe 10 is through last furnace shell and cooling stave body 1, and temperature measuring head contacts with the hot side of cooling stave body 1.Cooling water flow conduits 7 on vertical direction in each layer cooling stave body 1 is connected in series.Often organize water inlet pipe 8 in the present embodiment to be connected respectively by communicating pipe 9 with rising pipe 6, every root communicating pipe 9 is provided with a variable valve 4; For controlling the peak flow of communicating pipe 9, preventing because mishandle etc. causes variable valve 4 aperture excessive and making by the discharge of cooling stave body 1 too small, causing accident, communicating pipe 9 is also provided with throttling element 11.The signal output part of each temperature probe 2,5,10 and flow sensor 3 and the topworks of each variable valve 4 connection control system respectively, Controlling System receive each temperature probe 2,5,10, the temperature of flow sensor 3 and data on flows, analysis and calculation is carried out in conjunction with set(ting)value, judge thermal load and the slag crust situation of each measured zone (or whole blast furnace), calculate the cooling intensity needed for this region (or whole blast furnace) accordingly, and then the aperture of automatic control and adjustment valve 4, realize the bypass regulation and control of cooling water flow.Controlling System can also arrange MANUAL CONTROL mode, when needing to regulate the cooling intensity of blast furnace or its local to change or to maintain the type of furnace, also directly can control corresponding variable valve 4 by Controlling System and realizing.
The process utilizing native system to carry out blast furnace cooling is:
During blast fumance, need according to blast furnace cooling the water-in and water-out temperature difference △ t setting each cooling water flow conduits 7
0, such as 0.4 DEG C.The actual water-in and water-out temperature of this cooling water flow conduits 7 is monitored out respectively by temperature probe 5 and temperature probe 2, calculate actual water-in and water-out temperature difference △ t, when △ t >=0.4 DEG C, reduce corresponding variable valve 4 aperture, to increase the flow by this cooling water flow conduits 7; As △ t < 0.4 DEG C, show this region occur knot the thick or too low situation of temperature, then strengthen corresponding variable valve 4 aperture, to be reduced by the flow of this cooling water flow conduits 7, impel the slag crust in this region and furnace condition recovery normal.
Embodiment 2
Other structure of the present embodiment is identical with embodiment 1, difference is only: four water inlet pipes 8 be connected with cooling stave body 1 are connected by water inlet group connecting leg 12, corresponding four rising pipes 6 are connected by water outlet group union 13, water inlet group connecting leg 12 is connected by communicating pipe 9 with corresponding water outlet group union 13, is provided with variable valve 4 and throttling element 11 communicating pipe 9.Like this, by controlling a variable valve 4, one can be regulated and controled in blast furnace same layer compared with the cooling intensity in large regions simultaneously.
Core of the present invention is water inlet pipe 8 and rising pipe 6 to be communicated with by communicating pipe 9 and is regulated by the bypass that variable valve 4 carries out cooling water inflow, achieves automatic adjustment or the active adjustment of blast furnace or its Local cooling intensity.So its protection domain is not limited to above-described embodiment.Obviously, those skilled in the art can carry out various change and distortion to the present invention and not depart from the scope of the present invention and spirit, and such as: according to the specification of cooling stave body 1, the quantity of its cooling water flow conduits 7 is not limited to described in embodiment; Flow sensor 3 can be installed on water inlet pipe 8, rising pipe 6 or the optional position of communicating pipe 9, and the control for cooling water inflow is all equivalent; The situation that four water inlet pipes, 8, four rising pipes 6 that embodiment 2 gives one piece of cooling stave body 1 are communicated with by group connecting leg, the part water inlet pipe 8 of one piece of cooling stave body 1 and rising pipe 6 or be in the water inlet pipe 8 of polylith cooling stave body 1 of blast furnace same layer and rising pipe 6 adopts above-mentioned group of connecting leg and the structure of communicating pipe 9 to be also all feasible; In method operation, according to blast furnace cooling needs, the water-in and water-out temperature difference △ t of each cooling water flow conduits 7
0can set within the scope of 0.05 ~ 13 DEG C, be not limited to 0.4 DEG C in embodiment etc.If these are changed and distortion belongs in the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these changes and distortion.
Claims (8)
1. regulatable blast furnace cooling system, comprise the some cooling stave bodies (1) being arranged at last furnace shell inwall, cooling stave body (1) along blast furnace circumferentially and install multilayer continuously in the height direction, at least one cooling water flow conduits (7) is equipped with in each cooling stave body (1), cooling water flow conduits (7) two ends connect cooling stave water inlet pipe (8) and rising pipe (6) respectively, water inlet pipe (8) and rising pipe (6) pass last furnace shell and it are separately installed with temperature probe (2, 5), water inlet pipe (8) or rising pipe (6) are provided with flow sensor (3), cooling stave body (1) is also provided with temperature probe (10), cooling water flow conduits (7) on vertical direction in each layer cooling stave body (1) is connected in series, it is characterized in that: often organize water inlet pipe (8) and be connected respectively by communicating pipe (9) with rising pipe (6), communicating pipe (9) is provided with variable valve (4), the signal output part of each temperature probe (2,5,10) and flow sensor (3) and the topworks of each variable valve (4) connection control system respectively, for controlling the aperture of described variable valve (4).
2. regulatable blast furnace cooling system, comprise the some cooling stave bodies (1) being arranged at last furnace shell inwall, cooling stave body (1) along blast furnace circumferentially and install multilayer continuously in the height direction, at least one cooling water flow conduits (7) is equipped with in each cooling stave body (1), cooling water flow conduits (7) two ends connect cooling stave water inlet pipe (8) and rising pipe (6) respectively, water inlet pipe (8) and rising pipe (6) pass last furnace shell and it are separately installed with temperature probe (2, 5), water inlet pipe (8) or rising pipe (6) are provided with flow sensor (3), cooling stave body (1) is also provided with temperature probe (10), cooling water flow conduits (7) on vertical direction in each layer cooling stave body (1) is connected in series, it is characterized in that: at least two water inlet pipes (8) be on blast furnace same layer cooling stave body (1) are connected by water inlet group connecting leg (12), corresponding at least two rising pipes (6) are connected by water outlet group union (13), water inlet group connecting leg (12) is connected by communicating pipe (9) with corresponding water outlet group union (13), communicating pipe (9) is provided with variable valve (4), each temperature probe (2, 5, 10) and the signal output part of flow sensor (3), and the topworks of each variable valve (4) connection control system respectively, for controlling the aperture of described variable valve (4).
3. regulatable blast furnace cooling system according to claim 1 and 2, is characterized in that: described variable valve (4) is motor-driven control valve, pneumatic adjusting valve or electric liquid variable valve.
4. regulatable blast furnace cooling system according to claim 1 and 2, is characterized in that: be also provided with throttling element (11) described communicating pipe (9).
5. regulatable blast furnace cooling system according to claim 3, is characterized in that: be also provided with throttling element (11) described communicating pipe (9).
6. the blast furnace method of cooling of regulatable blast furnace cooling system as claimed in claim 1 or 2, it is characterized in that, it comprises the steps:
1) for the cooling water flow conduits (7) in the whole cooling stave body (1) of blast furnace, the water inlet pipe (8) of one or more cooling water flow conduits (7) in blast furnace same layer cooling stave body (1) and rising pipe (6) will be in by communicating pipe (9) bypass, every a connecting pipe (9) will arrange variable valve (4);
2) regulating and controlling valve (4) aperture, increases or reduces the flow in corresponding cooling water flow conduits (7), to adjust the cooling intensity in the blast furnace region corresponding to cooling water flow conduits (7).
7. blast furnace method of cooling according to claim 6, is characterized in that: described step 2) in, need according to blast furnace cooling the water-in and water-out temperature difference △ t setting each cooling water flow conduits (7)
0, monitor the actual water-in and water-out temperature difference △ t of each cooling water flow conduits (7), as △ t>=△ t
0time, reduce corresponding variable valve (4) aperture, to increase the flow by this cooling water flow conduits (7); As △ t < △ t
0time, strengthen corresponding variable valve (4) aperture, to be reduced by the flow of this cooling water flow conduits (7).
8. blast furnace method of cooling according to claim 7, is characterized in that: described △ t
0it is 0.05 ~ 13 DEG C.
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| CN201310113587.2A CN103215397B (en) | 2013-04-03 | 2013-04-03 | Regulable blast furnace cooling system and blast furnace cooling method |
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| CN201310113587.2A CN103215397B (en) | 2013-04-03 | 2013-04-03 | Regulable blast furnace cooling system and blast furnace cooling method |
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| CN103215397B true CN103215397B (en) | 2015-04-15 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105021048A (en) * | 2015-07-16 | 2015-11-04 | 江苏圣亚有色金属材料有限公司 | Improved water way system of horizontal electron beam furnace |
| CN105861769B (en) * | 2016-04-05 | 2017-10-10 | 扬州大学 | Blast-furnace cooled water system based on maximum temperature difference becomes valve optimization operation with selecting pumping method |
| CN106086262B (en) * | 2016-06-17 | 2018-06-29 | 武汉钢铁有限公司 | A kind of soft water distributor |
| 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 |
| CN109295272A (en) * | 2017-07-25 | 2019-02-01 | 宝山钢铁股份有限公司 | Blast furnace sealed cooling system temperature control adjusting method |
| CN110042181B (en) * | 2019-05-13 | 2020-09-11 | 武汉科技大学 | Method for dealing with thermal load impact of blast furnace in later service period |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2586147Y (en) * | 2002-12-19 | 2003-11-12 | 北京中科创新园高新技术有限公司 | On-line temp monitoring controller of water cooling wall of blast furnace |
| CN2674499Y (en) * | 2002-12-19 | 2005-01-26 | 北京中科创新园高新技术有限公司 | On line monitoring controller for water cooled wall |
| CN101805810A (en) * | 2010-04-08 | 2010-08-18 | 重庆钢铁(集团)有限责任公司 | Blast furnace cooling structure |
| CN203159644U (en) * | 2013-04-03 | 2013-08-28 | 武汉钢铁(集团)公司 | Controllable blast furnace cooling system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59225285A (en) * | 1983-06-03 | 1984-12-18 | 株式会社神戸製鋼所 | Method of cooling inside of fire proofing wall |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2586147Y (en) * | 2002-12-19 | 2003-11-12 | 北京中科创新园高新技术有限公司 | On-line temp monitoring controller of water cooling wall of blast furnace |
| CN2674499Y (en) * | 2002-12-19 | 2005-01-26 | 北京中科创新园高新技术有限公司 | On line monitoring controller for water cooled wall |
| CN101805810A (en) * | 2010-04-08 | 2010-08-18 | 重庆钢铁(集团)有限责任公司 | Blast furnace cooling structure |
| CN203159644U (en) * | 2013-04-03 | 2013-08-28 | 武汉钢铁(集团)公司 | Controllable blast furnace cooling system |
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Effective date of registration: 20170720 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |
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Granted publication date: 20150415 Termination date: 20190403 |