HU179742B - Process for the elimination of sediments from the walls of heat exhangers - Google Patents
Process for the elimination of sediments from the walls of heat exhangers Download PDFInfo
- Publication number
- HU179742B HU179742B HU79PE1088A HUPE001088A HU179742B HU 179742 B HU179742 B HU 179742B HU 79PE1088 A HU79PE1088 A HU 79PE1088A HU PE001088 A HUPE001088 A HU PE001088A HU 179742 B HU179742 B HU 179742B
- Authority
- HU
- Hungary
- Prior art keywords
- hydrogen fluoride
- dihydrofluorosilicate
- walls
- solution
- washing liquid
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 17
- 239000013049 sediment Substances 0.000 title description 4
- 230000008030 elimination Effects 0.000 title 1
- 238000003379 elimination reaction Methods 0.000 title 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 40
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 31
- 238000005406 washing Methods 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000010936 aqueous wash Methods 0.000 claims 2
- 238000005201 scrubbing Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 25
- 238000000746 purification Methods 0.000 description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 230000008021 deposition Effects 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 229910010413 TiO 2 Inorganic materials 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000004408 titanium dioxide Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000011403 purification operation Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/086—Iron or steel solutions containing HF
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
- Catalysts (AREA)
- ing And Chemical Polishing (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7822523A FR2431671A1 (fr) | 1978-07-19 | 1978-07-19 | Procede d'elimination des incrustations essentiellement titaniferes des parois d'echangeurs thermiques |
| FR7913925A FR2457471A2 (fr) | 1979-05-23 | 1979-05-23 | Procede continu d'elimination des incrustations essentiellement titaniferes des parois d'echangeurs thermiques |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HU179742B true HU179742B (en) | 1982-12-28 |
Family
ID=26220703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HU79PE1088A HU179742B (en) | 1978-07-19 | 1979-07-17 | Process for the elimination of sediments from the walls of heat exhangers |
Country Status (19)
| Country | Link |
|---|---|
| US (1) | US4277289A (Direct) |
| AR (1) | AR218551A1 (Direct) |
| AU (1) | AU532323B2 (Direct) |
| BR (1) | BR7904593A (Direct) |
| CA (1) | CA1126137A (Direct) |
| DD (1) | DD144955A5 (Direct) |
| DE (1) | DE2928832C2 (Direct) |
| ES (1) | ES482514A1 (Direct) |
| GB (1) | GB2026038B (Direct) |
| HU (1) | HU179742B (Direct) |
| IE (1) | IE48657B1 (Direct) |
| IL (1) | IL57818A0 (Direct) |
| IT (1) | IT1122196B (Direct) |
| MA (1) | MA18532A1 (Direct) |
| OA (1) | OA06299A (Direct) |
| PH (1) | PH14403A (Direct) |
| PL (1) | PL217174A1 (Direct) |
| TR (1) | TR20191A (Direct) |
| YU (1) | YU41654B (Direct) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2101650C1 (ru) * | 1996-03-18 | 1998-01-10 | Государственный научный центр РФ "Физико-энергетический институт" | Способ очистки внутренней поверхности стального циркуляционного контура с жидкометаллическим теплоносителем на основе свинца |
| US6599416B2 (en) | 2001-09-28 | 2003-07-29 | General Electric Company | Method and apparatus for selectively removing coatings from substrates |
| US6916429B2 (en) * | 2002-10-21 | 2005-07-12 | General Electric Company | Process for removing aluminosilicate material from a substrate, and related compositions |
| US6953533B2 (en) | 2003-06-16 | 2005-10-11 | General Electric Company | Process for removing chromide coatings from metal substrates, and related compositions |
| DE102008005199B4 (de) * | 2008-01-18 | 2014-01-23 | Areva Gmbh | Verfahren zur Reinigung eines Wärmetauschers |
| US20110088720A1 (en) * | 2009-10-20 | 2011-04-21 | General Electric Company | Methods for cleaning substrates |
| FR3005318B1 (fr) * | 2013-05-03 | 2015-05-29 | Technett | Solution de decapage chimique exempte d'acide fluorhydrique applicable sur le titane et ses alliages |
| AU2023446724B2 (en) * | 2023-07-31 | 2025-07-03 | Gem Co., Ltd. | Automatic descaling system for high-pressure reactor of laterite nickel ore |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2711364A (en) * | 1953-12-31 | 1955-06-21 | John G Beach | Polishing metals and composition therefor |
| US3010854A (en) * | 1954-12-31 | 1961-11-28 | Armco Steel Corp | Pickling solution and method |
| US3514407A (en) * | 1966-09-28 | 1970-05-26 | Lockheed Aircraft Corp | Chemical polishing of titanium and titanium alloys |
| US3562013A (en) * | 1967-10-23 | 1971-02-09 | Diversey Corp | Process of deoxidizing titanium and its alloys |
| DE1949287C3 (de) * | 1969-09-30 | 1981-07-23 | Vereinigte Aluminium-Werke Ag, 5300 Bonn | Verfahren zum Reinigen der Rohre von beim Rohraufschluß von Bauxit mit Natriumaluminatlauge entstandenen Krusten |
| DE1949778A1 (de) * | 1969-10-02 | 1971-04-22 | Vaw Ver Aluminium Werke Ag | Verfahren zur Entfernung von schwerloeslichen Krusten aus Bauxit-Aufschlussanlagen,mit Ausnahme von Rohraufschlussanlagen |
| US3725224A (en) * | 1971-06-30 | 1973-04-03 | Rohr Industries Inc | Composition for electrolytic descaling of titanium and its alloys |
| US3891456A (en) * | 1973-10-17 | 1975-06-24 | Us Air Force | Surface treatment of titanium and titanium alloys |
-
1979
- 1979-07-06 US US06/055,685 patent/US4277289A/en not_active Expired - Lifetime
- 1979-07-16 CA CA331,917A patent/CA1126137A/fr not_active Expired
- 1979-07-16 AR AR277319A patent/AR218551A1/es active
- 1979-07-16 ES ES482514A patent/ES482514A1/es not_active Expired
- 1979-07-17 YU YU1744/79A patent/YU41654B/xx unknown
- 1979-07-17 HU HU79PE1088A patent/HU179742B/hu not_active IP Right Cessation
- 1979-07-17 PL PL21717479A patent/PL217174A1/xx unknown
- 1979-07-17 IT IT24394/79A patent/IT1122196B/it active
- 1979-07-17 OA OA56853A patent/OA06299A/xx unknown
- 1979-07-17 IL IL57818A patent/IL57818A0/xx unknown
- 1979-07-17 DD DD79214407A patent/DD144955A5/de unknown
- 1979-07-17 DE DE2928832A patent/DE2928832C2/de not_active Expired
- 1979-07-17 MA MA18729A patent/MA18532A1/fr unknown
- 1979-07-17 AU AU48979/79A patent/AU532323B2/en not_active Ceased
- 1979-07-18 BR BR7904593A patent/BR7904593A/pt not_active IP Right Cessation
- 1979-07-18 TR TR20191A patent/TR20191A/xx unknown
- 1979-07-18 GB GB7925008A patent/GB2026038B/en not_active Expired
- 1979-07-19 PH PH22795A patent/PH14403A/en unknown
- 1979-08-08 IE IE1352/79A patent/IE48657B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| TR20191A (tr) | 1980-11-01 |
| DE2928832A1 (de) | 1980-01-31 |
| GB2026038A (en) | 1980-01-30 |
| AU4897979A (en) | 1980-01-24 |
| YU174479A (en) | 1982-08-31 |
| IT1122196B (it) | 1986-04-23 |
| PL217174A1 (Direct) | 1980-06-02 |
| AU532323B2 (en) | 1983-09-29 |
| PH14403A (en) | 1981-06-25 |
| ES482514A1 (es) | 1980-04-01 |
| IL57818A0 (en) | 1979-11-30 |
| DD144955A5 (de) | 1980-11-12 |
| OA06299A (fr) | 1981-06-30 |
| MA18532A1 (fr) | 1980-04-01 |
| IE791352L (en) | 1980-01-19 |
| IT7924394A0 (it) | 1979-07-17 |
| DE2928832C2 (de) | 1982-02-18 |
| CA1126137A (fr) | 1982-06-22 |
| AR218551A1 (es) | 1980-06-13 |
| US4277289A (en) | 1981-07-07 |
| BR7904593A (pt) | 1980-03-25 |
| IE48657B1 (en) | 1985-04-03 |
| GB2026038B (en) | 1982-09-02 |
| YU41654B (en) | 1987-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| HU90 | Patent valid on 900628 | ||
| HMM4 | Cancellation of final prot. due to non-payment of fee |