JPS5524531A - Scale preventive treating method - Google Patents
Scale preventive treating methodInfo
- Publication number
- JPS5524531A JPS5524531A JP9711078A JP9711078A JPS5524531A JP S5524531 A JPS5524531 A JP S5524531A JP 9711078 A JP9711078 A JP 9711078A JP 9711078 A JP9711078 A JP 9711078A JP S5524531 A JPS5524531 A JP S5524531A
- Authority
- JP
- Japan
- Prior art keywords
- polyphosphate
- pref
- concn
- scale
- water
- 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 obtain a superior scale preventive effect with a small amt. of additives by adding a polyphosphate and an acrylic acid type polymer in combination to treated water contg. high concn. salts, e.g. water after desulfurization or denitration from an iron mill or a chemical plant.
CONSTITUTION: In order to prevent formation of scale a polyphosphate such as sodium hexametaphosphate and an acrylic acid type polymer pref. having a MW above 20000 are added to water, after industrial treatment, having such a high salts concn. as a M alkalinity above 1000ppm and an electric conductivity above 10000 micromho/cm as well as showing a marked tendency to form scale. The ratio of the polyphosphate to the polymer is 1:5W5:1, pref. 1:3W3:1. The concn. of the additives is 0.1W100, pref. 1W30ppm in total.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53097110A JPS5811279B2 (en) | 1978-08-08 | 1978-08-08 | Scale prevention treatment method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53097110A JPS5811279B2 (en) | 1978-08-08 | 1978-08-08 | Scale prevention treatment method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5524531A true JPS5524531A (en) | 1980-02-21 |
JPS5811279B2 JPS5811279B2 (en) | 1983-03-02 |
Family
ID=14183438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53097110A Expired JPS5811279B2 (en) | 1978-08-08 | 1978-08-08 | Scale prevention treatment method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5811279B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57197334A (en) * | 1981-05-26 | 1982-12-03 | Komatsu Ltd | Electric oil pressure controller for construction vehicle |
US4640793A (en) * | 1984-02-14 | 1987-02-03 | Calgon Corporation | Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers |
EP0313157A2 (en) * | 1987-10-23 | 1989-04-26 | Calgon Corporation | Process for controlling calcium oxalate scale over a wide pH range |
US4936987A (en) * | 1983-03-07 | 1990-06-26 | Calgon Corporation | Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers |
JP2001062467A (en) * | 1999-08-25 | 2001-03-13 | Katayama Chem Works Co Ltd | Treatment of dust collecting water |
JP2001070987A (en) * | 1999-09-03 | 2001-03-21 | Katayama Chem Works Co Ltd | Water treatment method |
CN110803781A (en) * | 2018-08-06 | 2020-02-18 | 中国石油化工股份有限公司 | Composite corrosion and scale inhibitor containing polyphosphate, application thereof and method for inhibiting corrosion of circulating cooling water containing sulfur |
-
1978
- 1978-08-08 JP JP53097110A patent/JPS5811279B2/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57197334A (en) * | 1981-05-26 | 1982-12-03 | Komatsu Ltd | Electric oil pressure controller for construction vehicle |
US4936987A (en) * | 1983-03-07 | 1990-06-26 | Calgon Corporation | Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers |
US4640793A (en) * | 1984-02-14 | 1987-02-03 | Calgon Corporation | Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers |
EP0313157A2 (en) * | 1987-10-23 | 1989-04-26 | Calgon Corporation | Process for controlling calcium oxalate scale over a wide pH range |
JP2001062467A (en) * | 1999-08-25 | 2001-03-13 | Katayama Chem Works Co Ltd | Treatment of dust collecting water |
JP4621820B2 (en) * | 1999-08-25 | 2011-01-26 | 株式会社片山化学工業研究所 | Dust collection method |
JP2001070987A (en) * | 1999-09-03 | 2001-03-21 | Katayama Chem Works Co Ltd | Water treatment method |
CN110803781A (en) * | 2018-08-06 | 2020-02-18 | 中国石油化工股份有限公司 | Composite corrosion and scale inhibitor containing polyphosphate, application thereof and method for inhibiting corrosion of circulating cooling water containing sulfur |
CN110803781B (en) * | 2018-08-06 | 2021-07-30 | 中国石油化工股份有限公司 | Composite corrosion and scale inhibitor containing polyphosphate, application thereof and method for inhibiting corrosion of circulating cooling water containing sulfur |
Also Published As
Publication number | Publication date |
---|---|
JPS5811279B2 (en) | 1983-03-02 |
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