EP0967300B1 - Verfahren zum Schutz metallischer Bauteile vor Korrosion in Trocknungsanlagen der Bauindustrie - Google Patents
Verfahren zum Schutz metallischer Bauteile vor Korrosion in Trocknungsanlagen der Bauindustrie Download PDFInfo
- Publication number
- EP0967300B1 EP0967300B1 EP99111482A EP99111482A EP0967300B1 EP 0967300 B1 EP0967300 B1 EP 0967300B1 EP 99111482 A EP99111482 A EP 99111482A EP 99111482 A EP99111482 A EP 99111482A EP 0967300 B1 EP0967300 B1 EP 0967300B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- inhibitors
- water
- air
- hot
- 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 - Lifetime
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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
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
Definitions
- the invention relates to methods for protecting metallic components from Corrosion in drying systems such as drying chambers, duct dryers, Autoclaves and the like in the building materials industry.
- the task is accomplished through a process to protect metallic components against corrosion in drying systems in the building materials industry with the characterizing features of claim 1 solved.
- the direct supply of the steam-volatile is of great advantage Inhibitors in the channels and / or directly in the hot air or steam flow according to claim 2.
- the inhibitors mix with the Drying media, and get as a mixture in the Drying chambers or autoclaves, where they can be used with steam or hot air on the metal surfaces form.
- the inhibitors can on the one hand with the expelled mixing water or the steam for heating the Distribute building materials.
- the dosage of the inhibitors has an effect in the form of aliphatic amines according to claims 4 and 5 improving quality on building materials such as clay, limestone or aerated concrete out. They show a cheaper interface activity, a better one Drying behavior and have a lower sensitivity to cracks.
- the method according to the invention is characterized by a easy-to-use corrosion protection made of substantial material and repair cost savings, longer life of the metallic plant parts as well as minimizing the through Plant downtimes result in production downtimes.
- the more cost-effective production of the systems by eliminating the previous ones costly corrosion protection measures is another positive consequence of the method according to the invention.
- the incoming air is with a Burner 4 heated.
- preference is given directly to the air duct 2 sprayed through a metering lance 5 aliphatic amine, which in a container 8 prepared aliphatic amine via a Connection line 7 and, for example, a menbral piston pump 6 the metering lance 5 is supplied.
- a concentration aliphatic amines in the aqueous phase of the air flow from 0.1 to 150 mg / kg specified.
- the one enriched with the aliphatic amine and heated air flow is passed into a drying chamber 3 in which for example, moist bricks are stored for drying.
- the heated one Air flow drives the water out of the bricks.
- the aliphatic amines are over the enriched with the expelled water Hot air flow in the drying chamber 3 and the following in the Drawing system parts not described in more detail evenly and finely distributed and form a on the metallic surfaces corrosion-resistant layer.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Drying Of Solid Materials (AREA)
Description
Claims (5)
- Verfahren zum Schutz metallischer Bauteile vor Korrosion in Trocknungsanlagen (1), in denen Baustoffe mit heißer Luft oder Dampf durch Wasseraustreibung getrocknet werden, dadurch gekennzeichnet, daß den Trocknungsanlagen (1) dampfflüchtige Inhibitoren zugeführt werden, die sich während des Trocknungsprozesses als Dampf- und/oder Heißluftbestandteile in den Räumen gleichmäßig fein ausbreiten und an den Metallflächen der Anlagenteile korrosionsbeständige Beläge bilden, wobei die dampfflüchtigen Inhibitoren mit dem Dampf und/oder der Heißluft und/oder mit dem Anmachwasser der Baustoffe und/oder dem Speisewasser oder dem Speisewasserdampf in Kanäle (2) und/oder Trocknungsräume (3) der Trocknungsanlagen (1) eingebracht werden.
- Verfahren zum Schutz metallischer Bauteile vor Korrosion nach Anspruch 1, dadurch gekennzeichnet, daß die dampfflüchtigen Inhibitoren direkt in die Kanäle (2) und/oder in den Heißluft- oder Dampfstrom eingesprüht werden und als Dampf- Inhibitorengemisch und/oder Heißluft- inhibitorengemisch in die Trocknungsräume (3) strömen.
- Verfahren zum Schutz metallischer Bauteile vor Korrosion nach Anspruch 1, dadurch gekennzeichnet, daß die dampfflüchtigen Inhibitoren dem Speisewasser und/oder dem Anmachwasser zudosiert, mit dem Wasser den Baustoffen beigegeben, mit den feuchten Baustoffen in die Trocknungsräume (3) eingebracht und beim Trocknungsprozeß mit dem Wasser aus den Baustoffen ausgetrieben werden.
- Verfahren zum Schutz metallischer Bauteile vor Korrosion nach Anspruch 1, dadurch gekennzeichnet, daß die dampfflüchtigen Inhibitoren aliphatische Amine der Kettenlänge > C 12 und < C 21 sind.
- Verfahren zum Schutz metallischer Bauteile vor Korrosion nach Anspruch 4, dadurch gekennzeichnet, daß die Konzentration der aliphatischen Amine 0,1 bis 150 mg/kg in der Naßkomponente der Luft beträgt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19827759A DE19827759A1 (de) | 1998-06-23 | 1998-06-23 | Verfahren zum Schutz metallischer Bauteile vor Korrosion in Trocknungsanlagen der Bauindustrie |
DE19827759 | 1998-06-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0967300A1 EP0967300A1 (de) | 1999-12-29 |
EP0967300B1 true EP0967300B1 (de) | 2003-05-14 |
Family
ID=7871645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99111482A Expired - Lifetime EP0967300B1 (de) | 1998-06-23 | 1999-06-13 | Verfahren zum Schutz metallischer Bauteile vor Korrosion in Trocknungsanlagen der Bauindustrie |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0967300B1 (de) |
AT (1) | ATE240424T1 (de) |
DE (1) | DE19827759A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011103021B4 (de) * | 2011-05-24 | 2013-07-04 | Mineralit Gmbh | Trommeltrockner |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD91175A (de) * | ||||
AT79562B (de) * | 1916-02-03 | 1919-12-29 | David Dr Reichinstein | Rostschutzverfahren. |
US2000663A (en) * | 1930-10-15 | 1935-05-07 | United States Gypsum Co | Process of drying materials |
DE1108042B (de) * | 1955-07-26 | 1961-05-31 | British Petroleum Co | Verfahren und Vorrichtung zur Verringerung der Korrosion an Verbrennungsvorrichtungen |
NL262711A (de) * | 1960-03-23 | |||
DE1159731B (de) * | 1960-08-04 | 1963-12-19 | Heinrich Mueller | Dampfphaseninhibitoren zum Schutz von Eisen und seinen Legierungen gegen atmosphaerische Korrosion |
US4329168A (en) * | 1980-07-01 | 1982-05-11 | Rubio Charles A | Amine treatment for passivating sponge iron |
JPS5767784A (en) * | 1980-10-16 | 1982-04-24 | Tomoegawa Paper Co Ltd | Inner wall treatment of wood drying furnace |
EP0134365B1 (de) * | 1983-08-03 | 1987-06-16 | UNION CHIMIQUE ET INDUSTRIELLE DE L'OUEST S.A. Société anonyme dite: | Korrosionsinhibierende Zusammensetzung zum Schützen von Metalloberflächen einer Anlage, die Wasser als thermisches oder energetisches Fluidum verwendet, und Verfahren zum Schützen dieser Oberfläche |
GB8611942D0 (en) * | 1986-05-16 | 1986-06-25 | Precicion Dependability & Qual | Preventing steel corrosion |
DE3723795A1 (de) * | 1987-06-11 | 1988-12-29 | Wolfgang Dipl Ing Borelly | Korrosionsschutz fuer ein aus staehlernen seilen oder paralleldraht- oder -litzenbuendeln bestehendes zugglied |
CA1339761C (en) * | 1988-07-11 | 1998-03-24 | Anthony M. Rossi | Corrosion control composition and method for boiler/condensate stem system |
-
1998
- 1998-06-23 DE DE19827759A patent/DE19827759A1/de not_active Withdrawn
-
1999
- 1999-06-13 EP EP99111482A patent/EP0967300B1/de not_active Expired - Lifetime
- 1999-06-13 AT AT99111482T patent/ATE240424T1/de not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011103021B4 (de) * | 2011-05-24 | 2013-07-04 | Mineralit Gmbh | Trommeltrockner |
Also Published As
Publication number | Publication date |
---|---|
EP0967300A1 (de) | 1999-12-29 |
ATE240424T1 (de) | 2003-05-15 |
DE19827759A1 (de) | 1999-12-30 |
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