CS216960B1 - Method of cleaning the water and heating systems of corrosion products of the iron - Google Patents
Method of cleaning the water and heating systems of corrosion products of the iron Download PDFInfo
- Publication number
- CS216960B1 CS216960B1 CS289079A CS289079A CS216960B1 CS 216960 B1 CS216960 B1 CS 216960B1 CS 289079 A CS289079 A CS 289079A CS 289079 A CS289079 A CS 289079A CS 216960 B1 CS216960 B1 CS 216960B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- water
- corrosion products
- cleaning
- iron
- heating systems
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 11
- 238000005260 corrosion Methods 0.000 title claims description 7
- 230000007797 corrosion Effects 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 6
- 238000010438 heat treatment Methods 0.000 title claims description 6
- 238000004140 cleaning Methods 0.000 title claims description 5
- 229910052742 iron Inorganic materials 0.000 title claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- 239000010802 sludge Substances 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000000746 purification Methods 0.000 description 4
- 239000003517 fume Substances 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
Description
Výše uvedené nedostatky jsou odstraněny způsobem čištění podle vynálezu, jehož podstata spočívá v tom, že se do vodní náplně systému přidá 4 až 70 g/1 kyselého uhličitanu sodného nebo draselného a náplň se udržuje v cirkulaci za současného odlučování korozních zplodin a kalů z náplně. Čištění topných systémů lze provádět i za provozu, t. j. za teplot 6o až 80 °C, což čištění urychlí.The aforementioned drawbacks are overcome by the purification method of the invention, which comprises adding 4-70 g / l of sodium or potassium bicarbonate to the water charge of the system and keeping the circulation circulating while separating the corrosion products and sludge from the charge. Heating systems can also be cleaned during operation, that is, at temperatures of between 6 ° C and 80 ° C, which speeds up cleaning.
Po vyčištění topných systémů způsobem podle vynálezu není třeba náplň vypouštět, nebol tato má dobré inhibiční účinky proti další korozi. Takto se nejen uryohlí, ale i podstatně zlevní provedení čištění oproti známým způsobům a nezhoršuje se životní prostředí vypouštěním solných vod do kanalizace;After the heating systems have been cleaned by the method according to the invention, there is no need to discharge the charge, since it has good inhibitory effects against further corrosion. In this way, it is not only urine, but also considerably cheaper to carry out the treatment compared to known methods, and does not deteriorate the environment by discharging salt water into the sewer;
Výše uvedené roztoky kyselých alkalických uhličitanů odloučí korozní zplodiny železa od ocelového materiálu systému tím, že naruší mezi nimi se nalézající vazební vrstvičku.The above acidic alkali carbonate solutions separate the corrosive fumes of the iron from the steel material of the system by breaking the bonding layer between them.
Vodárensky upravené vody obsahují velké množství kyslíku a jen střední nebo i malé 2+ 2+ množství Ca nebo Mg . Proto jsou kysličníky železa převážnou složkou korozních zplodin, zatímco obsah CaCO^ je malý, takže není na závadu, že roztok kyselých uhličitanů nerozpouští uvedené karbonáty, neboť nánosy se uvolní jako celek při čištění způsobem podle vynálezu. Uvolňování nánosů napomáhá C02 bouřlivě se vyvíjející reakcí mezi CaSO^, který bývá obsažen v nánosech, a kyselým alkalickým uhličitanem :Water-treated waters contain large amounts of oxygen and only moderate or small 2+ 2+ amounts of Ca or Mg. Therefore, iron oxides are the predominant component of the corrosion products, while the CaCO 3 content is small, so that it is not a problem that the acidic carbonate solution does not dissolve said carbonates, since the deposits are released as a whole on cleaning according to the process of the invention. The release of deposits is aided by CO 2 by the rapidly developing reaction between CaSO 4, which is present in the deposits, and acidic alkaline carbonate:
CaS04 + 2 NaHC03 - Na2S04 + OaCO^ + C02 + H20 Inhibiční účinek náplně topného systému lze po provedeném čištění ještě zlepšit, po odplynění, přídavkem NaOH nebo KOH, aby se zbývající kyselé alkalloké uhličitany převedly v normální.CaS0 4 + 2 NaHCO 3 - Na 2 SO 4 4 + OaCO 4 + CO 2 + H 2 0 The inhibitory effect of the heating system charge after cleaning can be further improved, after degassing, by adding NaOH or KOH to bring the remaining acidic alkali carbonates to normal .
Příklad :Example:
1/ Do systému teplovodního vytápění se přidá 10 g/1 NaHCO^ a při teplotě vody 60 až 80°C, t. j. za provozu, se roztok nechá působit po dobu 48 hodin. Roztok se udržuje v cirkulaci a uvolněné korozní zplodiny a kal se z náplně odlučuji znanými způsoby, např. sedimentací, odlučovači nebo filtraoí. Po provedeném vyčištění se přidá do vodní náplně 5 g/1 NaOH, ke zlepšení Inhibiční účinnosti.1) To the hot-water heating system 10 g / l of NaHCO 3 are added and at a water temperature of 60-80 ° C, i.e. during operation, the solution is allowed to act for 48 hours. The solution is kept in circulation and the released corrosive fumes and the sludge is separated from the charge by known methods, e.g. by sedimentation, separators or filters. After purification, 5 g / l NaOH was added to the water charge to improve the Inhibitory Efficiency.
2/ Do systému teplé užitkové vody se přidá 10 g/1 NaHCO^ a při teplotě vody 60°C se roztok nechá působit po dobu 48 hodin. Roztok se udržuje v cirkulaci a uvolněné korozní zplodiny a nánosy se z náplně odlučují např. sedimentací, odlučovači nebo filtraoí. Po provedeném čištění se náplň použije k neutralizaci po čištění jiných systémů kyselými roztoky.2) 10 g / l of NaHCO3 was added to the domestic hot water system and the solution was allowed to react for 48 hours at a water temperature of 60 ° C. The solution is kept in circulation and the released corrosive fumes and deposits are separated from the charge by, for example, sedimentation, separators or filters. After purification, the charge is used to neutralize after purification of other systems with acidic solutions.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS289079A CS216960B1 (en) | 1979-04-25 | 1979-04-25 | Method of cleaning the water and heating systems of corrosion products of the iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS289079A CS216960B1 (en) | 1979-04-25 | 1979-04-25 | Method of cleaning the water and heating systems of corrosion products of the iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS216960B1 true CS216960B1 (en) | 1982-12-31 |
Family
ID=5367339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS289079A CS216960B1 (en) | 1979-04-25 | 1979-04-25 | Method of cleaning the water and heating systems of corrosion products of the iron |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS216960B1 (en) |
-
1979
- 1979-04-25 CS CS289079A patent/CS216960B1/en unknown
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