CN101353205A - Method for preventing softening water from corrupting equipment - Google Patents
Method for preventing softening water from corrupting equipment Download PDFInfo
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- CN101353205A CN101353205A CNA200810222411XA CN200810222411A CN101353205A CN 101353205 A CN101353205 A CN 101353205A CN A200810222411X A CNA200810222411X A CN A200810222411XA CN 200810222411 A CN200810222411 A CN 200810222411A CN 101353205 A CN101353205 A CN 101353205A
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- borate
- equipment
- softening water
- water
- soft water
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a method for preventing soft water from eroding equipment and pertains to the technical field of soft water. When soft water is adopted in recycling cooling water of the fire wall of blast furnace and air heating furnace, in order to prevent the soft water from eroding equipment, borate and copper slow-release agent are added in the soft water, the added amount of borate is 1200 mg/L to 2000 mg/L, and the added amount of copper slow-release is 1 mg/L to 2 mg/L. The advantages are that borate formulation is environmentally friendly with strong stability, and the shortcomings of phosphate formulation, nitrite formulation and silicate formulation are overcome.
Description
Technical field
The invention belongs to the softening water technical field, a kind of method that prevents softening water from corrupting equipment particularly is provided, be applicable to metallurgy industry blast furnace, converter, the steel rolling protection against corrosion of softening water as recirculating cooling water system.
Background technology
At present, when recirculated cooling water adopts softening water, generally adopt phosphorus line formulation, but the easily long microorganism of phosphoric acid salt is often caused the water system fault.Employing nitrite prescription, but add the concentration height, high density has strong carinogenicity, and poor stability, is unfavorable for environmental protection.
When adopting the silicate prescription, a big hidden danger is arranged, if when softening water hardness is high, can generate Calucium Silicate powder, knot is difficult to remove in tubing system, causes the water system catastrophe failure.The environmental protection of borate prescription, stability have overcome the shortcoming that phosphoric acid salt, nitrite prescription, silicate are filled a prescription by force.
Summary of the invention
The object of the present invention is to provide a kind of method that prevents softening water from corrupting equipment, solved softening water hardness when high, can generate Calucium Silicate powder, knot is difficult to remove in tubing system, causes the problem of water system catastrophe failure
The present invention is in metallurgy industry blast furnace, converter, when softening water is used in steel rolling as recirculated cooling water, adds borate and copper inhibitor in softening water, and the borate dosage is between 1200-1800mg/L, and the copper inhibitor dosage is between 1-2mg/L.Prevented the corrosion of softening water to equipment.
Borate of the present invention is a kind of in sodium tetraborate decahydrate, Sodium Tetraborate, borax, sodium pyroborate, month stone sand; Described copper inhibitor is a kind of in benzotriazole, mercaptobenzothiazole, the Methylbenzotriazole.
The invention has the advantages that, use the environmental protection of borate prescription, stability by force, overcome the shortcoming that phosphoric acid salt, nitrite prescription, silicate are filled a prescription.In recirculating cooling water system, prevent from first to use in the corrosion of softening water to equipment.
Embodiment
Shoudu Iron and Steel Co moves steel 2650m3 blast funnace hot blast stove, the furnace wall water softening system adopts the method that prevents softening water from corrupting equipment to implement
1. the basis adds dose:
Hotblast stove, furnace wall system volume: (the hot blast stove system volume is 250m
3, the furnace wall system volume is 1100m
3) system's need dose:
Sodium tetraborate decahydrate: 1500mg/L * 1350=2025 (kg)
Benzotriazole: 250mg/L * 1350=337.5 (kg)
Pour sodium tetraborate decahydrate 2025kg, benzotriazole 337.5kg into 10m
3The pond in, with softening water dissolving, and logical steam-heated cal(l)andria stirs, the dissolving back adds in hotblast stove, the blast-furnace soft water system with pump.
2. daily dosing and control method
1., rate of water make-up is temporarily by 5 tons of every days, adds inhibiter day shift every day one time.Solid corrosion inhibitor 7.5KG (pouch), liquid copper inhibiter 50KG.(two barrels) not moisturizing, not dosing.
2., inhibiter is added in body of heater moisturizing softening water tank.
3., water quality control criterion
Recirculated water mesoboric acid sodium controlling concn is 1500mg/L ± 300.System control concentration rate is less than 2.5, when system's concentration rate greater than 2.5 the time, should strengthen blowdown.
Claims (2)
1, a kind of method that prevents softening water from corrupting equipment is characterized in that, adds borate and copper inhibitor in softening water, and the borate dosage is between 1200-2000mg/L, and the copper inhibitor dosage is between 1-2mg/L.
2, in accordance with the method for claim 1, it is characterized in that described borate is a kind of in sodium tetraborate decahydrate, Sodium Tetraborate, borax, sodium pyroborate, month stone sand; Described copper inhibitor is a kind of in benzotriazole, mercaptobenzothiazole, the Methylbenzotriazole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810222411XA CN101353205B (en) | 2008-09-16 | 2008-09-16 | Method for preventing softening water from corrupting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810222411XA CN101353205B (en) | 2008-09-16 | 2008-09-16 | Method for preventing softening water from corrupting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101353205A true CN101353205A (en) | 2009-01-28 |
| CN101353205B CN101353205B (en) | 2011-11-02 |
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ID=40306263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810222411XA Active CN101353205B (en) | 2008-09-16 | 2008-09-16 | Method for preventing softening water from corrupting equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN101353205B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102860309A (en) * | 2011-07-07 | 2013-01-09 | 爱环吴世(苏州)环保有限公司 | Corrosion mitigation sterilization composite medicament and processing technique thereof |
| CN103388147A (en) * | 2013-07-24 | 2013-11-13 | 童建国 | Central air-conditioner refrigerant water maintaining medicament |
| CN103570153A (en) * | 2012-07-24 | 2014-02-12 | 中国石油化工股份有限公司 | Method of recycling reclaimed water for recirculating cooling water system |
| CN106015837A (en) * | 2016-05-31 | 2016-10-12 | 无锡锡能锅炉有限公司 | Rehydration agent for water recovery pipeline of pulverized coal fired boiler |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5316573A (en) * | 1992-03-12 | 1994-05-31 | International Business Machines Corporation | Corrosion inhibition with CU-BTA |
| CN100513332C (en) * | 2006-08-18 | 2009-07-15 | 中国石油化工股份有限公司 | Corrosion inhibitor used for closed circulation water system |
-
2008
- 2008-09-16 CN CN200810222411XA patent/CN101353205B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102860309A (en) * | 2011-07-07 | 2013-01-09 | 爱环吴世(苏州)环保有限公司 | Corrosion mitigation sterilization composite medicament and processing technique thereof |
| CN103570153A (en) * | 2012-07-24 | 2014-02-12 | 中国石油化工股份有限公司 | Method of recycling reclaimed water for recirculating cooling water system |
| CN103570153B (en) * | 2012-07-24 | 2015-10-07 | 中国石油化工股份有限公司 | A kind of Treated sewage reusing is in the method for recirculating cooling water system |
| CN103388147A (en) * | 2013-07-24 | 2013-11-13 | 童建国 | Central air-conditioner refrigerant water maintaining medicament |
| CN103388147B (en) * | 2013-07-24 | 2016-01-13 | 童建国 | Central air-conditioner refrigerant water maintenance procedure |
| CN106015837A (en) * | 2016-05-31 | 2016-10-12 | 无锡锡能锅炉有限公司 | Rehydration agent for water recovery pipeline of pulverized coal fired boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101353205B (en) | 2011-11-02 |
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Owner name: BEIJING SHOUGANG CO., LTD. Free format text: FORMER OWNER: HEBEI SHOUGANG QIAN AN STEEL CO., LTD. Effective date: 20140404 Free format text: FORMER OWNER: CAPITAL IRON + STEEL GENERAL CO. Effective date: 20140404 |
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Free format text: CORRECT: ADDRESS; FROM: 064404 TANGSHAN, HEBEI PROVINCE TO: 100041 SHIJINGSHAN, BEIJING |
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Effective date of registration: 20140404 Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Beijing Shougang Co., Ltd. Address before: 064404 Hebei city of Qian'an province Shougang yangzidian Town, Qian'an iron and Steel Co. Ltd. Patentee before: Hebei Shougang Qian'an Steel Co., Ltd. Patentee before: Capital Iron & Steel General Company |