ES2009444A6 - Preventing corrosion of water pipes - Google Patents
Preventing corrosion of water pipesInfo
- Publication number
- ES2009444A6 ES2009444A6 ES8803744A ES8803744A ES2009444A6 ES 2009444 A6 ES2009444 A6 ES 2009444A6 ES 8803744 A ES8803744 A ES 8803744A ES 8803744 A ES8803744 A ES 8803744A ES 2009444 A6 ES2009444 A6 ES 2009444A6
- Authority
- ES
- Spain
- Prior art keywords
- saturator
- concn
- water
- lime
- decarbonater
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 5
- 230000007797 corrosion Effects 0.000 title abstract 2
- 238000005260 corrosion Methods 0.000 title abstract 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 3
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 3
- 239000004571 lime Substances 0.000 abstract 3
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 2
- 235000010216 calcium carbonate Nutrition 0.000 abstract 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- -1 K(+) ions Chemical class 0.000 abstract 1
- 239000004568 cement Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 abstract 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 230000002269 spontaneous effect Effects 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F15/00—Other methods of preventing corrosion or incrustation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
In the corrosion protection of ferrous metal or cement-based internal walls of water pipes, continuously sampled water is treated with solid lime prior to passing to a saturator and then reintroduced into the pipe. The amt. of added lime is such that on a total CO2 concn. versus Ca(2+) concn. diagram, the point of the water is within a zone between the CaO/CO2 equilibrium curve and the spontaneous CaCO3 pptn. curve and above the line (SX) of slope equal to 2, S lying on the abscissa axis and its abscissa being a function of the concn. of SO4(2-), Cl(-), NO3(-), Mg(2+), Na(+) and K(+) ions. - Before introduction into the saturator, the sampled water is mixed in a decarbonater with a lime-loaded CO2 free soln. from the saturator, the flow rate of this soln. being high enough to allow almost complete CO2 elimination in the decarbonater by CaCO3 pptn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES8803744A ES2009444A6 (en) | 1988-12-09 | 1988-12-09 | Preventing corrosion of water pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES8803744A ES2009444A6 (en) | 1988-12-09 | 1988-12-09 | Preventing corrosion of water pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2009444A6 true ES2009444A6 (en) | 1989-09-16 |
Family
ID=8259318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES8803744A Expired ES2009444A6 (en) | 1988-12-09 | 1988-12-09 | Preventing corrosion of water pipes |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2009444A6 (en) |
-
1988
- 1988-12-09 ES ES8803744A patent/ES2009444A6/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SA6 | Expiration date (snapshot 920101) |
Free format text: 2008-12-09 |
|
| FD1A | Patent lapsed |
Effective date: 20100528 |