ES347206A1 - Method of inhibiting the precipitation of scale-forming salts and compositions therefor - Google Patents
Method of inhibiting the precipitation of scale-forming salts and compositions thereforInfo
- Publication number
- ES347206A1 ES347206A1 ES347206A ES347206A ES347206A1 ES 347206 A1 ES347206 A1 ES 347206A1 ES 347206 A ES347206 A ES 347206A ES 347206 A ES347206 A ES 347206A ES 347206 A1 ES347206 A1 ES 347206A1
- Authority
- ES
- Spain
- Prior art keywords
- polyacrylamide
- water
- scale
- inhibiting
- precipitation
- 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.)
- Expired
Links
- 230000002401 inhibitory effect Effects 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 239000000203 mixture Substances 0.000 title 1
- 238000001556 precipitation Methods 0.000 title 1
- 150000003839 salts Chemical class 0.000 title 1
- 229920002401 polyacrylamide Polymers 0.000 abstract 5
- 229910019142 PO4 Inorganic materials 0.000 abstract 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 3
- 239000010452 phosphate Substances 0.000 abstract 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 125000003368 amide group Chemical group 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/105—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
- C02F5/125—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen combined with inorganic substances
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Scaling in, for example, industrial watersystems, is prevented by adding to water, from which CaCO3 or other scale-forming material may be precipitated, an alkali metal molecularly condensed phosphate having a molar ratio of alkali metal oxide to P2O5 of 1:1 to 2:1, such as Natripolyphosphate, and a water-soluble polyacrylamide wherein 10-40% of the amide groups have been hydrolyzed or a water-soluble substituted polyacrylamide such as sulphonated methylol polyacrylamide. Preferably the ratio of condensed phosphate to polyacrylamide is from 5:1 to 1:3. The combined content of the condensed phosphate and polyacrylamide in the water may be up to 100 p. p. m.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59466066A | 1966-11-16 | 1966-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES347206A1 true ES347206A1 (en) | 1969-01-16 |
Family
ID=24379837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES347206A Expired ES347206A1 (en) | 1966-11-16 | 1967-11-15 | Method of inhibiting the precipitation of scale-forming salts and compositions therefor |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE706481A (en) |
| CH (1) | CH503804A (en) |
| DE (1) | DE1642444A1 (en) |
| ES (1) | ES347206A1 (en) |
| GB (1) | GB1203449A (en) |
| NL (1) | NL6715597A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114249435B (en) * | 2020-09-21 | 2024-05-14 | 广州联福新材料科技有限公司 | Water treatment agent and preparation method thereof |
| CN115615985A (en) * | 2021-07-15 | 2023-01-17 | 大庆油田有限责任公司 | Method for measuring scale prevention rate of three-component combination flooding silicon scale |
-
1967
- 1967-11-11 DE DE19671642444 patent/DE1642444A1/en active Pending
- 1967-11-14 CH CH1589967A patent/CH503804A/en not_active IP Right Cessation
- 1967-11-14 BE BE706481D patent/BE706481A/xx unknown
- 1967-11-15 ES ES347206A patent/ES347206A1/en not_active Expired
- 1967-11-15 GB GB5206667A patent/GB1203449A/en not_active Expired
- 1967-11-16 NL NL6715597A patent/NL6715597A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6715597A (en) | 1968-05-17 |
| GB1203449A (en) | 1970-08-26 |
| DE1642444A1 (en) | 1971-05-06 |
| BE706481A (en) | 1968-03-18 |
| CH503804A (en) | 1971-02-28 |
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