DE3904170A1 - Method for protecting flue gas desulphurisation plants from corrosion - Google Patents
Method for protecting flue gas desulphurisation plants from corrosionInfo
- Publication number
- DE3904170A1 DE3904170A1 DE3904170A DE3904170A DE3904170A1 DE 3904170 A1 DE3904170 A1 DE 3904170A1 DE 3904170 A DE3904170 A DE 3904170A DE 3904170 A DE3904170 A DE 3904170A DE 3904170 A1 DE3904170 A1 DE 3904170A1
- Authority
- DE
- Germany
- Prior art keywords
- layer
- hundred
- elastomer
- corrosion
- thickness
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/06—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
- B32B2311/18—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
- B32B2311/22—Nickel or cobalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2319/00—Synthetic rubber
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Bei nassen Rauchgasentschwefelungsverfahren sind die mit den verschiedenen gasförmigen, flüssigen und festen Stoffen in Berührung kommenden Bauteile zuverlässig gegen Korrosion zu schützen. Insbesondere wächst der korrosive Angriff auf Bauteile, welche aus Kostengründen aus Kohlenstoffstahl her gestellt werden, mit steigenden Betriebstemperaturen.In the case of wet flue gas desulfurization processes, these are included the various gaseous, liquid and solid substances components in contact reliably against corrosion to protect. In particular, the corrosive attack grows up Components made of carbon steel for cost reasons be placed with increasing operating temperatures.
Bei Rauchgasentschwefelungsanlagen, deren Betriebstempera turen bei etwa 45 bis 50°C lagen, reichten nach dem bisherigen Stand der Kenntnisse Auskleidungen aus Elastomeren oder Beschichtungen aus Kunstharzen, welche mit Glasfasern oder Glasflocken versetzt sind aus, einen langfristig sicheren Korrosionsschutz zu gewährleisten.For flue gas desulfurization systems, their operating temperature tures were around 45 to 50 ° C, enough after previous state of knowledge linings made of elastomers or coatings made of synthetic resins, which with glass fibers or glass flakes are off, one long term to ensure safe corrosion protection.
In jüngster Zeit sind jedoch an Rauchgasentschwefelungsan lagen, welche bei ca. 65 bis 72°C betrieben werden, Schäden an dem herkömmlichen Korrosionsschutzmaterial, welches dem Stand der Technik entspricht, aufgetreten.Recently, however, flue gas desulfurization has been increasing which are operated at approx. 65 to 72 ° C, damage on the conventional anti-corrosion material, which the State of the art, occurred.
Eine Auskleidung der Bauteile mit metallischen Werkstoffen wird ebenfalls angewandt, wobei aus Kostengründen nur auf der den aggressiven Medien zugewandten Seite ein Auftrag durch Plattierung oder Schweißen erfolgt. Besonders die Schweiß nähte bilden einen Angriffspunkt für Korrosion. Eine Plattierung ist nur an dem unverarbeiteten Werkstoff möglich.Lining the components with metallic materials is also used, but for cost reasons only on the the aggressive media side an order Plating or welding is done. Especially the sweat Seams form a point of attack for corrosion. A Plating is only possible on the unprocessed material.
Arbeiten auf der Baustelle oder im Laufe des Betriebes notwendige Reparaturen oder Änderungen erfordern schwierige Schweißarbeiten mit langwieriger Vorbereitung. Das metallische Korrosionsschutzmaterial muß in einer Mindestwandstärke von ca. 2 mm eingesetzt werden, damit es verschweißt werden kann. Work on the construction site or in the course of operation necessary repairs or changes require difficult ones Welding work with lengthy preparation. The metallic Corrosion protection material must have a minimum wall thickness of approx. 2 mm so that it can be welded.
Die erfindungsgemäße Aufgabe besteht in der Schaffung eines widerstandsfähigen Korrosionsschutzsystems, welches die an sich bekannten Werkstoffe Edelstahl oder Nickelbasislegierun gen oder Titan oder dessen Legierungen einerseits verbindet mit leicht zu verarbeitenden Elastomeren andererseits.The object of the invention is to create a resistant corrosion protection system, which the the known materials such as stainless steel or nickel-based alloy gen or titanium or its alloys on the one hand with easy-to-use elastomers on the other hand.
Je nach Erfordernis kann als weitere Erleichterung der Umgang mit lösungsmittelhaltigen Klebersystemen vermieden werden, wenn das Elastomer mit einer selbstklebenden Schicht z. B. aus Acrylkleber ausgerüstet ist.Depending on your needs, this can be a further relief Avoid handling solvent-based adhesive systems if the elastomer is self-adhesive Layer z. B. is made of acrylic adhesive.
Zur Erhöhung der Sicherheit kann die metallische Schicht mit einer Schleißschicht aus einem widerstandsfähigen Elastomer beschichtet sein. Hierdurch läßt sich eine Kontaktkorrosion durch Flugrost vermeiden. Weiterhin wird dadurch die Abdichtung von Nähten auf der Baustelle er leichtert. Reparaturen sind durch Verkleben von Elastomer mit Elastomer möglich.To increase security, the metallic layer with a wear layer made of a resistant Be coated with an elastomer. This allows one Avoid contact corrosion due to flash rust. Will continue thereby sealing seams on the construction site relieved. Repairs are made by gluing elastomer possible with elastomer.
An besonders stark beanspruchten Stellen können die metallischen Schichten bei Bedarf mehrfach vorhanden sein.In particularly heavily used areas, the metallic layers can be present several times if necessary.
Da die erfindungsgemäßen Korrosionsschutzsysteme unter gleichbleibenden Bedingungen mit definierten Eigenschaften hergestellt werden können, entfällt ein großer Teil der sonst auf den Baustellen notwendigen Qualitätssicherungs arbeiten und kann in die Fertigung verlegt werden, wo sie einfacher, billiger und besser erfolgen können. Since the corrosion protection systems according to the invention under constant conditions with defined properties can be produced, a large part of the otherwise necessary quality assurance on construction sites work and can be moved to manufacturing where they can be done easier, cheaper and better.
Die Fig. A, B, C und D stellen verschiedene Varianten der erfindungsgemäßen Korrosionsschutzbeschichtung dar. Figs. A, B, C and D represent different variants of the anti-corrosion coating according to the invention.
Die Fig. A zeigt eine einfache Ausführung, bei der die metallische Schicht 1 mit einer Elastomerschicht 2 zusammen gefügt ist. 3 stellt die klebende Schicht dar. Fig. A shows a simple embodiment in which the metallic layer is joined 1 2 together with an elastomer layer. 3 represents the adhesive layer.
Die Fig. B zeigt eine Ausführung wie A, wobei die metallische Schicht 1 mit einer Schleißschicht 4 versehen ist. Fig. B shows an embodiment such as A, wherein the metallic layer is provided with a Schleißschicht 4 1.
Die Fig. C zeigt eine Ausführung für hohe thermische und chemische Belastungen, bei der zwei metallische Schichten 1 mit zwei Elastomerschichten 2 zusammengefügt sind. 3 stellt wiederum die klebende Schicht dar. Figs. C shows a design for high thermal and chemical stress, are joined together in the two metallic layers 1 with two elastomer layers 2. 3 again represents the adhesive layer.
Die Fig. D ist wie Fig. C, jedoch mit einer zusätzlichen
Schleißschicht 4 aufgebaut. Je nach der korrosiven Belastung
können die metallischen Schichten 1 und die Elastomer
schichten 2 verschiedene Eigenschaften hinsichtlich der
Materialzusammensetzung und/oder der Dicke aufweisen.
1. metallische Schicht
2. Elastomerschicht
3. klebende Schicht
4. Schleißschicht. FIG. D is like Fig. C, but constructed with an additional Schleißschicht. 4 Depending on the corrosive load, the metallic layers 1 and the elastomer layers 2 can have different properties with regard to the material composition and / or the thickness.
1. metallic layer
2. Elastomer layer
3rd adhesive layer
4. Wear layer.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3904170A DE3904170A1 (en) | 1989-02-11 | 1989-02-11 | Method for protecting flue gas desulphurisation plants from corrosion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3904170A DE3904170A1 (en) | 1989-02-11 | 1989-02-11 | Method for protecting flue gas desulphurisation plants from corrosion |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3904170A1 true DE3904170A1 (en) | 1990-08-16 |
Family
ID=6373917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3904170A Withdrawn DE3904170A1 (en) | 1989-02-11 | 1989-02-11 | Method for protecting flue gas desulphurisation plants from corrosion |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3904170A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4002495A1 (en) * | 1989-02-02 | 1990-08-09 | Vaillant Joh Gmbh & Co | Neutralising acidic condensate in heat exchanger - by contact with alkaline-reacting metal oxide |
DE4337895A1 (en) * | 1993-11-05 | 1995-05-11 | Leto Gmbh | Rotary heat exchanger for recovering heat from the exhaust air (waste air) of, in particular, flue gas desulphurisation plants (systems) |
WO1998050227A1 (en) * | 1997-05-06 | 1998-11-12 | Krupp Vdm Gmbh | Flat, cold deformable composite material |
DE19719005C2 (en) * | 1997-05-06 | 2001-05-17 | Krupp Vdm Gmbh | Lining in the form of a composite material |
DE19719004C2 (en) * | 1997-05-06 | 2001-05-17 | Krupp Vdm Gmbh | Sheet-like, cold-formable material composite |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2506912B2 (en) * | 1975-02-19 | 1977-03-10 | Bayer Ag, 5090 Leverkusen | PROCEDURE FOR LINING A LARGE STEEL CONTAINER |
DE3310048A1 (en) * | 1982-03-26 | 1983-09-29 | Usui Kokusai Sangyo K.K., Shizuoka | CORROSION-RESISTANT COATED IRON-CONTAINING MATERIAL |
DE3422920A1 (en) * | 1983-06-23 | 1985-01-17 | Nippon Steel Corp., Tokio/Tokyo | STEEL TUBE COATED WITH A PROPYLENE POLYMER |
DE3610701A1 (en) * | 1985-03-28 | 1986-10-09 | Usui Kokusai Sangyo K.K., Shizuoka | NON-CORRODING COATING FOR A STEEL TUBE |
DE3716935A1 (en) * | 1987-05-20 | 1988-12-01 | Mtu Muenchen Gmbh | METHOD FOR PRODUCING OXIDATION AND HOT GAS CORROSION PROTECTION LAYERS |
-
1989
- 1989-02-11 DE DE3904170A patent/DE3904170A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2506912B2 (en) * | 1975-02-19 | 1977-03-10 | Bayer Ag, 5090 Leverkusen | PROCEDURE FOR LINING A LARGE STEEL CONTAINER |
DE3310048A1 (en) * | 1982-03-26 | 1983-09-29 | Usui Kokusai Sangyo K.K., Shizuoka | CORROSION-RESISTANT COATED IRON-CONTAINING MATERIAL |
DE3422920A1 (en) * | 1983-06-23 | 1985-01-17 | Nippon Steel Corp., Tokio/Tokyo | STEEL TUBE COATED WITH A PROPYLENE POLYMER |
DE3610701A1 (en) * | 1985-03-28 | 1986-10-09 | Usui Kokusai Sangyo K.K., Shizuoka | NON-CORRODING COATING FOR A STEEL TUBE |
DE3716935A1 (en) * | 1987-05-20 | 1988-12-01 | Mtu Muenchen Gmbh | METHOD FOR PRODUCING OXIDATION AND HOT GAS CORROSION PROTECTION LAYERS |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4002495A1 (en) * | 1989-02-02 | 1990-08-09 | Vaillant Joh Gmbh & Co | Neutralising acidic condensate in heat exchanger - by contact with alkaline-reacting metal oxide |
DE4337895A1 (en) * | 1993-11-05 | 1995-05-11 | Leto Gmbh | Rotary heat exchanger for recovering heat from the exhaust air (waste air) of, in particular, flue gas desulphurisation plants (systems) |
WO1998050227A1 (en) * | 1997-05-06 | 1998-11-12 | Krupp Vdm Gmbh | Flat, cold deformable composite material |
DE19719005C2 (en) * | 1997-05-06 | 2001-05-17 | Krupp Vdm Gmbh | Lining in the form of a composite material |
DE19719004C2 (en) * | 1997-05-06 | 2001-05-17 | Krupp Vdm Gmbh | Sheet-like, cold-formable material composite |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0341455B1 (en) | Intermediate foil layer for the protection of machine parts in a corrosive environment | |
WO2012019572A1 (en) | Burner and method for partially oxidizing liquid, carbon-containing fuel | |
DE2528546C2 (en) | Sealing for a non-rising stem of a valve | |
DE3904170A1 (en) | Method for protecting flue gas desulphurisation plants from corrosion | |
EP2163377A1 (en) | Corrosion protection cladding for use in environments with high chemical content at high temperatures | |
EP0397731B1 (en) | Metallic object, in particular gas turbine blade with protective coating | |
DE2128621A1 (en) | Mechanical seal for a circulating regenerative heat exchanger | |
CH658333A5 (en) | CONTAINERS FOR LONG-TERM STORAGE OF RADIOACTIVE MATERIAL, IN PARTICULAR Spent NUCLEAR FUEL. | |
EP0520596B1 (en) | Connection element pretreatment process for a gastight sleeve-pipe coupling | |
DE3734768C2 (en) | ||
DE19546825C2 (en) | Mechanical seal | |
CH669652A5 (en) | ||
DE1646667C3 (en) | Method for spraying a ceramic or oxide layer onto a base body | |
DE932396C (en) | Pressure vessel seal for larger pressure vessels | |
DE2639325B2 (en) | Use of a nickel-based alloy | |
DE2036243C2 (en) | Sealing arrangement | |
DE3023475A1 (en) | Tightly metal sealed valve - has nickel-phosphorus coating on one sealing element, which does not tend to cold welding | |
DE3617701C2 (en) | ||
DE3315894C2 (en) | Protective element for workpieces to be machined | |
DE3510608A1 (en) | Corrosion-resistant and high-temperature-resistant non-lubricated low-friction sliding system, suitable in particular for shut-off devices | |
CH413542A (en) | Process for the production of protective coatings on metals and protective coating produced by this process | |
DE102015102920B4 (en) | Process for producing a coating protecting inner surfaces of flue gas duct walls against corrosion | |
DE9005064U1 (en) | Sealing arrangement for a flange seal | |
DE10109138A1 (en) | Components for the boiler area of power plants or waste incineration plants | |
DE915044C (en) | Flange sealing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |