JPS5520646A - Preventing method of scale deposition of exhaust gas system and dust collecting water system of steel making furnace - Google Patents
Preventing method of scale deposition of exhaust gas system and dust collecting water system of steel making furnaceInfo
- Publication number
- JPS5520646A JPS5520646A JP9330478A JP9330478A JPS5520646A JP S5520646 A JPS5520646 A JP S5520646A JP 9330478 A JP9330478 A JP 9330478A JP 9330478 A JP9330478 A JP 9330478A JP S5520646 A JPS5520646 A JP S5520646A
- Authority
- JP
- Japan
- Prior art keywords
- dust
- water
- exhaust gas
- dust collecting
- hco
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To prevent scale deposition in the exhaust gas system and dust collecting water system of steel making furnaces such as convertors, etc. by dosing one or both of alkali salts and P-contained compounds into the circulating dust collecting water of both systems, specifying dissolved salt balance (total hardness/HCO3 -) and PO4 3- amount and modifying water quality to high HCO3 - contained water.
CONSTITUTION: The exhaust gas of a convertor 1 passes through an indirect cooling part 3 and is subjected to water washing and dust collecting in primary and secondary dust collectors 4 and 5, after which it is exhausted by an induction fan 6. On the other hand, the dust-collected water laden with dust from the dust collector 4 is removed of suspended matter, thence it enters a water tank 10 and is supplied to a pump 11 to the dust collector 5. The dust-laden waste water from the dust collector 5 goes through a seal pot 13 and is circulated to the dust collector 4 by a pump 14. Here, one or more kinds of alkali salts such as Na2CO3, etc. or P-contained compounds (H3PO4, etc.) are dosed into the circulating dust-collecting water to modify the water quality so that the dissolved salt balance (total hardness/HCO3 -) becomes less than 0.2 and PO4 3-≥1 ppm.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9330478A JPS5520646A (en) | 1978-07-31 | 1978-07-31 | Preventing method of scale deposition of exhaust gas system and dust collecting water system of steel making furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9330478A JPS5520646A (en) | 1978-07-31 | 1978-07-31 | Preventing method of scale deposition of exhaust gas system and dust collecting water system of steel making furnace |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5520646A true JPS5520646A (en) | 1980-02-14 |
JPS6233000B2 JPS6233000B2 (en) | 1987-07-17 |
Family
ID=14078591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9330478A Granted JPS5520646A (en) | 1978-07-31 | 1978-07-31 | Preventing method of scale deposition of exhaust gas system and dust collecting water system of steel making furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5520646A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0313157A2 (en) * | 1987-10-23 | 1989-04-26 | Calgon Corporation | Process for controlling calcium oxalate scale over a wide pH range |
JP2002126787A (en) * | 2000-10-24 | 2002-05-08 | Kurita Water Ind Ltd | Scale preventing method and scale inhibitor |
JP2010234294A (en) * | 2009-03-31 | 2010-10-21 | Kurita Water Ind Ltd | Method of treating slurry of high concentration |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5078566A (en) * | 1973-10-11 | 1975-06-26 |
-
1978
- 1978-07-31 JP JP9330478A patent/JPS5520646A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5078566A (en) * | 1973-10-11 | 1975-06-26 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0313157A2 (en) * | 1987-10-23 | 1989-04-26 | Calgon Corporation | Process for controlling calcium oxalate scale over a wide pH range |
JP2002126787A (en) * | 2000-10-24 | 2002-05-08 | Kurita Water Ind Ltd | Scale preventing method and scale inhibitor |
JP4577466B2 (en) * | 2000-10-24 | 2010-11-10 | 栗田工業株式会社 | Scale prevention method and scale inhibitor |
JP2010234294A (en) * | 2009-03-31 | 2010-10-21 | Kurita Water Ind Ltd | Method of treating slurry of high concentration |
Also Published As
Publication number | Publication date |
---|---|
JPS6233000B2 (en) | 1987-07-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3607482A (en) | Process of regeneration of metal treating solutions | |
EP0313989B1 (en) | Method of inhibiting adhesion of by-product inside duct in treatment of waste gas by electron beam irradiation | |
JPS5520646A (en) | Preventing method of scale deposition of exhaust gas system and dust collecting water system of steel making furnace | |
DK524083A (en) | PROCEDURE FOR CLEANING OF GAS GAS AND FOR RECOVERY OF HEAT AND APPLIANCE FOR EXERCISING THE PROCEDURE | |
JPS5445673A (en) | Waste gas treatment method | |
JPS5564899A (en) | Treatment of waste water being scavenged, desulfurized and denitrified waste gas | |
JPS5522319A (en) | High temperature waste gas cleaning | |
JPS5811279B2 (en) | Scale prevention treatment method | |
ES8400494A1 (en) | Method of cleaning a gas flow containing zinc vapor | |
JPS5293672A (en) | Desulfurization process of exhaust gas | |
JPS53113264A (en) | Method of treating waste acid | |
JPS57209624A (en) | Stack gas desulfurization process | |
JPS5361567A (en) | Removing method for chlorine ion from wet treating process for flue gas | |
JPS52133006A (en) | Circulating treatment method for dust/collected water from water cooling type blast furnace | |
JPS5482366A (en) | Hcl, sox and nox removing method for exhaust gas | |
JPS5697524A (en) | Treatment of coal ash | |
JPS54109502A (en) | Method of washing heat transmission tube | |
JPS5527017A (en) | Dust collector | |
JPS56129083A (en) | Disposal of borofluoride in waste water | |
JPS53146264A (en) | Treating method for sludge | |
JPS5277804A (en) | Process for collecting dust from waste gases of blast furnace or conve rter | |
JPS5223859A (en) | Disposal process of waste water containing fluorine salts with carbona te being solved | |
JPS56129082A (en) | Disposal of borofluoride in waste water | |
JPS5360398A (en) | Treating method for blast furnace slag | |
SU428764A1 (en) | METHOD OF AUTOMATIC REGULATION OF WET GAS CLEANING PROCESS |