CN101381785A - Water control method after blast furnace cooling wall breakage - Google Patents
Water control method after blast furnace cooling wall breakage Download PDFInfo
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- CN101381785A CN101381785A CNA2008101553590A CN200810155359A CN101381785A CN 101381785 A CN101381785 A CN 101381785A CN A2008101553590 A CNA2008101553590 A CN A2008101553590A CN 200810155359 A CN200810155359 A CN 200810155359A CN 101381785 A CN101381785 A CN 101381785A
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Abstract
The invention relates to a method for controlling water in a metallurgical blast furnace, in particular to a method for controlling water after a cooling wall of the blast furnace is damaged. The method is carried out according to the following steps: (1) after the cooling wall is judged to be damaged, the bunch of the cooling wall in which a damaged point is positioned is determined; (2) soft water in the bunch of the cooling wall is changed into clean circulating water; the clean circulating water adopts a mode of high-in and low-out, that is the clean circulating water enters from the uppermost part of the bunch of the cooling cool and flows out from the lowermost part of the bunch of the cooling wall; and (3) the amount and the flow speed of the water are adjusted to reduce the pressure in a passage of the bunch of the cooling wall, the water effluent temperature and the breathing state are controlled so as to control the cooling strength of the bunch of the cooling wall and the amount of water entering the furnace. The method for controlling water after the cooling wall of the blast furnace is damaged can rapidly control the amount of water leaking into the furnace from the leaked cooling wall, avoid the phenomena of abnormality of the furnace situation, splashing on a taphole and the like, reduces the damping down and can fully cool a water controlling passage including the damaged cooling wall.
Description
Technical field
The present invention relates to the water control method of metallurgy high furnace, specifically the water control method behind the blast furnace cooling wall breakage.
Background technology
The modern blast furnace body of heater adopts soft water closed circulation system cooling mostly, and the cooling stave of this system leaks to handle and also becomes a generally acknowledged difficult problem.The processing of leaking for blast furnace cooling stave, the way of originally most of blast furnaces is to control water temporarily, as shown in Figure 1, soft water enters from system's foot, enter water leg from system's topmost, after really control, carry out the damping down disconnection process or block, can cause behind the cooling wall breakage when control water this string cooling channel amount of cooling water to influence the life-span of other cooling staves inadequately like this.In addition, the control water yield is an empirical value, does not have data, is not that the control water excess is very few, and cooling stave is overheated when causing the control hypervolia, can cause the cooling stave scaling loss when serious; The control water yield causes working of a furnace fluctuation, unfavorable production phenomenons such as iron mouth splash after water coolant enters in the stove after a little while.Because there is above defective in the water control method behind the existing blast furnace cooling wall breakage, makes blast furnace will change one time cooling stave in average 4 years.
Summary of the invention
Technical problem to be solved by this invention is: at the shortcoming that exists in the above prior art, propose a kind ofly can control bleed the water yield in the stove of the cooling stave that leaks fast, avoid furnace condition disorder, phenomenons such as iron mouth splash, the water control method behind the blast furnace cooling wall breakage of minimizing damping down.
The technical scheme that the present invention solves above technical problem is: the water control method behind the blast furnace cooling wall breakage, carry out according to the following steps:
(1) conclude cooling wall breakage after, determine that breaking point is positioned at where to go here and there on the cooling stave;
(2) will go here and there the soft water of cooling stave changes clean circulating water into, and clean circulating water adopts the mode of high in and low out, and promptly clean circulating water enters from the topmost of this string cooling stave, from foot outflow of this string cooling stave;
(3) regulating pondage and flow velocity are to reduce the pressure in the string cooling stave passage, and control leaving water temperature(LWT) and the state of panting are controlled the cooling intensity of this string cooling stave and gone into the stove water yield.
Adopt the reason of clean circulating water to be: 1. not influence the monitoring of soft water system; 2. inflow temperature is low, and cooling fully; 3. the water source is general, and cost is low.
In the step (2), the water outlet of clean circulating water links to each other with ambient atmosphere.In the step (3), the temperature difference of leaving water temperature(LWT) and inflow temperature is smaller or equal to 2 ℃, and the state of panting is not for panting or little panting.
Advantage of the present invention is: adopt the water control method behind the blast furnace cooling wall breakage of the present invention, can control bleed the water yield in the stove of the cooling stave that leaks fast, avoid furnace condition disorder, phenomenons such as iron mouth splash, reduce damping down, and can fully cool off the control aquaporin that comprises damaged cooling cooling stave.Water control method application principle of the present invention is correct, easy and simple to handle, can accurately obtain a result rapidly, and cooling efficiency significantly improves, and can be maintained until the blast furnace scheduled overhaul, and can prolong the cooling stave life-span.Advantage of the present invention may be summarized as follows: 1. cooling stave leaks in time controlledly, reduces delay ratio, helps stable furnace condition, reduces cost; 2. in time control water leakage, reduce the splash of iron mouth, keep the stokehold job safety; 3. control water leakage, prevent industrial accident (stove cold); 4. protect cooling stave not because of control water scaling loss; 5. indirect benefit: guarantee smooth operation of furnace, joint is burnt.
Description of drawings
Fig. 1 is the water control method synoptic diagram behind the existing blast furnace cooling wall breakage.
Fig. 2 is the water control method synoptic diagram behind the blast furnace cooling wall breakage of the present invention.
Embodiment
Embodiment one
Water control method synoptic diagram behind the blast furnace cooling wall breakage of present embodiment as shown in Figure 2, the water control method behind the blast furnace cooling wall breakage, carry out according to the following steps:
(1) conclude cooling wall breakage after, determine that breaking point is positioned at where to go here and there on the cooling stave;
(2) will go here and there the soft water of cooling stave changes clean circulating water into, and clean circulating water adopts the mode of high in and low out, and promptly clean circulating water enters from the topmost of this string cooling stave, and from foot outflow of this string cooling stave, the water side of clean circulating water links to each other with ambient atmosphere;
(3) regulating pondage and flow velocity are to reduce the pressure in the string cooling stave passage, control leaving water temperature(LWT) and the state of panting are controlled the cooling intensity of this string cooling stave and are gone into the stove water yield, the temperature difference that makes leaving water temperature(LWT) and inflow temperature is smaller or equal to 2 ℃, and the state of panting is not for panting or little panting.
Adopt the water control method behind the blast furnace cooling wall breakage of the present invention, can control bleed the water yield in the stove of the cooling stave that leaks fast, avoid furnace condition disorder, phenomenons such as iron mouth splash, reduce damping down, and can fully cool off the control aquaporin that comprises damaged cooling cooling stave.Water control method application principle of the present invention is correct, easy and simple to handle, can accurately obtain a result rapidly, and cooling efficiency significantly improves, and can be maintained until the blast furnace scheduled overhaul, and can prolong the cooling stave life-span.
The present invention can also have other embodiment, and the technical scheme that equal replacement of all employings or equivalent transformation form all drops within the scope of protection of present invention.
Claims (4)
1. the water control method behind the blast furnace cooling wall breakage is characterized in that: carry out according to the following steps:
(1) conclude cooling wall breakage after, determine that breaking point is positioned at where to go here and there on the cooling stave;
(2) will go here and there the soft water of cooling stave changes clean circulating water into, and clean circulating water adopts the mode of high in and low out, and promptly clean circulating water enters from the topmost of this string cooling stave, from foot outflow of this string cooling stave;
(3) regulating pondage and flow velocity are to reduce the pressure in the string cooling stave passage, and control leaving water temperature(LWT) and the state of panting are controlled the cooling intensity of this string cooling stave and gone into the stove water yield.
2. the water control method behind the blast furnace cooling wall breakage as claimed in claim 1 is characterized in that: in the described step (2), the water outlet of described clean circulating water links to each other with ambient atmosphere.
3. the water control method behind the blast furnace cooling wall breakage as claimed in claim 1 is characterized in that: in the described step (3), the temperature difference of described leaving water temperature(LWT) and inflow temperature is smaller or equal to 2 ℃.
4. the water control method behind the blast furnace cooling wall breakage as claimed in claim 1 is characterized in that: in the described step (3), the described state of panting is not for panting or little panting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101553590A CN101381785B (en) | 2008-10-21 | 2008-10-21 | Water control method after blast furnace cooling wall breakage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101553590A CN101381785B (en) | 2008-10-21 | 2008-10-21 | Water control method after blast furnace cooling wall breakage |
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| CN101381785A true CN101381785A (en) | 2009-03-11 |
| CN101381785B CN101381785B (en) | 2010-06-02 |
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| CN2008101553590A Expired - Fee Related CN101381785B (en) | 2008-10-21 | 2008-10-21 | Water control method after blast furnace cooling wall breakage |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701270B (en) * | 2009-11-11 | 2011-01-12 | 山西太钢不锈钢股份有限公司 | Method for continuously maintaining cooling capability of blast furnace cooling wall after breakage |
| CN104004869A (en) * | 2014-06-12 | 2014-08-27 | 武钢集团昆明钢铁股份有限公司 | Cooling method for damaged cold plate of blast furnace through differential pressure |
| CN106555022A (en) * | 2017-01-20 | 2017-04-05 | 马鞍山钢铁股份有限公司 | A kind of blast furnace leak cooling wall otherness water control method and leak cooling wall regulate and control method for water system |
| CN113201613A (en) * | 2021-05-12 | 2021-08-03 | 广东韶钢松山股份有限公司 | Maintenance method for cooling wall of blast furnace |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1199098A (en) * | 1997-05-12 | 1998-11-18 | 张露 | Judgement method of blast furnace cooling wall work and damage state based on cooling water temperature change |
| CN1204271C (en) * | 2001-02-20 | 2005-06-01 | 首钢总公司 | Method for preparing water cooling pipe for cooling wall of blast furnace |
| CN100456009C (en) * | 2006-03-17 | 2009-01-28 | 邯郸钢铁股份有限公司 | Leakage-checking spacing method of blast furnace |
-
2008
- 2008-10-21 CN CN2008101553590A patent/CN101381785B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701270B (en) * | 2009-11-11 | 2011-01-12 | 山西太钢不锈钢股份有限公司 | Method for continuously maintaining cooling capability of blast furnace cooling wall after breakage |
| CN104004869A (en) * | 2014-06-12 | 2014-08-27 | 武钢集团昆明钢铁股份有限公司 | Cooling method for damaged cold plate of blast furnace through differential pressure |
| CN104004869B (en) * | 2014-06-12 | 2015-12-30 | 武钢集团昆明钢铁股份有限公司 | A kind of blast furnace damaged cold drawing pressure reduction method of cooling |
| CN106555022A (en) * | 2017-01-20 | 2017-04-05 | 马鞍山钢铁股份有限公司 | A kind of blast furnace leak cooling wall otherness water control method and leak cooling wall regulate and control method for water system |
| CN113201613A (en) * | 2021-05-12 | 2021-08-03 | 广东韶钢松山股份有限公司 | Maintenance method for cooling wall of blast furnace |
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|---|---|
| CN101381785B (en) | 2010-06-02 |
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Owner name: NANJING NANGANG INDUSTRY DEVELOPMENT CO., LTD. Free format text: FORMER OWNER: NANJING UNITE STEEL CO., LTD. Effective date: 20091120 |
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Effective date of registration: 20091120 Address after: Liuhe District of Nanjing City, Jiangsu Province, xiejiadian post encoding: 210035 Applicant after: Nanjing Iron & Steel United Co., Ltd. Address before: Liuhe District of Nanjing City, Jiangsu Province, xiejiadian post encoding: 210035 Applicant before: Nanjing Iron & Steel United Co., Ltd. |
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Granted publication date: 20100602 Termination date: 20161021 |