AT228593B - Corrosion protection for condenser tubes and the like similar Heat exchange surfaces - Google Patents
Corrosion protection for condenser tubes and the like similar Heat exchange surfacesInfo
- Publication number
- AT228593B AT228593B AT490761A AT490761A AT228593B AT 228593 B AT228593 B AT 228593B AT 490761 A AT490761 A AT 490761A AT 490761 A AT490761 A AT 490761A AT 228593 B AT228593 B AT 228593B
- Authority
- AT
- Austria
- Prior art keywords
- heat exchange
- corrosion protection
- exchange surfaces
- condenser tubes
- similar heat
- Prior art date
Links
- 238000005260 corrosion Methods 0.000 title description 2
- 230000007797 corrosion Effects 0.000 title description 2
- 239000004033 plastic Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- -1 butyraldehyde acetal Chemical class 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N butyric aldehyde Natural products CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
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Korrosionsschutzauflagen für Kondensatorrohre u. ähnl. Wärmeaustauschflächen
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ähnl.fanden, dass die Beimengung an gut leitenden Substanzen dazu führt, dass auch bei solchen grösseren Schichtstärken keine Beeinträchtigung des Wärmeüberganges stattfindet.
Bevorzugt betrifft die Erfindung die Verwendung von Kunststoffkombinationen aus den erwähnten Komponenten mit einer Beimischung von etwa 30% feinverteiltem Graphit.
Das Aufbringen der erfindungsgemäss vorgesehenen Kunststoffkombinationen kann in einem oder in mehreren Arbeitsgängen erfolgen ; es ist auf Grund der nunmehr erlaubten grösseren Schichtstärke wesentlich erleichtert und überdies weisen die Überzüge auch noch eine verbesserte mechanische Widerstandsfähigkeit auf. Die Anwendung der erfindungsgemässen Kunststoffkombinationen bringt somit auch auf der Wasserseite der Wärmeaustauscherflächen wesentliche Vorteile mit sich.
Es ist zwar bereits ein Vorschlag bekanntgeworden, ein Kunstharz oder genauer gesagt ein Giessharz dadurch für seine Anwendung beispielsweise für Lagerschalen, Kugellagergehäuse od. dgl. brauchbar zu machen, dass zur Modifikation seiner Eigenschaften ein Füllstoff in Form metallisierter, d. h. durch geschmolzenes Metall geblasener Fasern beigemengt wird. Es soll diese Massnahme neben andern Eigenschaften auch die an sich sehr schlechte thermische Leitfähigkeit des Kunststoffes bzw. des verwendeten Füllstoffes verbessern.
Abgesehen davon also, dass es sich in diesem Falle um eine Metallisierung des-Füll- stoffes handelt, geht es dabei auch um die Herstellung räumlich ausgebildeter Gegenstände von gegebenenfalls beträchtlichem Volumen, bei denen im besonderen mit örtlichen Hitzestauungen zu rechnen ist, während sich die Erfindung mit dünnen Überzugsschichten befasst, die in der Grössenordnung von einigen Mikron liegen und bei denen die vorteilhaften und in ihrem Ausmass zweifellos überraschenden Auswirkungen der Zusätze an wärmeleitfähigen Substanzen zur Lösung des gestellten Problems keineswegs von vornherein erwartet werden konnten.
Eine spezielle Zusammensetzung für Auskleidungen an den Oberflächen von Kondensatoren in Raffinerien ist wie folgt aufgebaut : 75 Teile nicht plastifizierter Phenolharze ; 5 - 2 Teile eines als Plastifizierungsmittel wirkenden Weichharzes, z. B. eines Azetales, wie vorzugsweise Butyraldehydacetal, in rei -
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verteilter Graphit.
PATENTANSPRÜCHE : 1. Verwendung von Kunststoffkombinationen aus etwa 80 Teilen plastifizierter, härtbarer, in Alkohol gelöster Phenolharze und etwa 20 Teilen mit den Phenolharzen verträglicher Silikone mit zusätzlich etwa 20 - 60 Teilen fein verteiltem Kohlenstoff oder andern gut wärmeleitenden Substanzen in Form dünner Schichten, als vor allem dampfseitig aufzubringende Schutzauflage auf Kondensatorrohre u. ähnl.
Wärmeaustauschflächen.
<Desc / Clms Page number 1>
Corrosion protection for condenser tubes and the like similar Heat exchange surfaces
EMI1.1
<Desc / Clms Page number 2>
similarly found that the addition of highly conductive substances leads to the fact that the heat transfer is not impaired even with such larger layer thicknesses.
The invention preferably relates to the use of plastic combinations made from the components mentioned with an admixture of about 30% of finely divided graphite.
The plastic combinations provided according to the invention can be applied in one or more operations; it is considerably easier due to the greater layer thickness that is now permitted and, moreover, the coatings also have improved mechanical resistance. The use of the plastic combinations according to the invention thus also brings significant advantages on the water side of the heat exchanger surfaces.
It is true that a proposal has already become known to make a synthetic resin, or more precisely a casting resin, useful for its application, for example for bearing shells, ball bearing housings or the like, that a filler in the form of metallized, i.e. H. is admixed with fibers blown by molten metal. In addition to other properties, this measure is also intended to improve the inherently very poor thermal conductivity of the plastic or the filler used.
Aside from the fact that this is a metallization of the filler, it is also about the production of three-dimensional objects of possibly considerable volume, in which in particular local heat accumulations are to be expected, while the invention is concerned with thin coating layers which are in the order of magnitude of a few microns and in which the advantageous and undoubtedly surprising effects of the addition of thermally conductive substances to solve the problem posed could by no means be expected from the outset.
A special composition for linings on the surfaces of condensers in refineries is made up as follows: 75 parts of non-plasticized phenolic resins; 5 - 2 parts of a soft resin acting as a plasticizer, e.g. B. an acetal, such as butyraldehyde acetal, in rei -
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distributed graphite.
PATENT CLAIMS: 1. Use of plastic combinations of about 80 parts of plasticized, curable phenolic resins dissolved in alcohol and about 20 parts of silicone compatible with phenolic resins with an additional 20 to 60 parts of finely divided carbon or other highly thermally conductive substances in the form of thin layers than before all protective layer to be applied on the steam side on the condenser tubes and the like similar
Heat exchange surfaces.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT490761A AT228593B (en) | 1961-06-24 | 1961-06-24 | Corrosion protection for condenser tubes and the like similar Heat exchange surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT490761A AT228593B (en) | 1961-06-24 | 1961-06-24 | Corrosion protection for condenser tubes and the like similar Heat exchange surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT228593B true AT228593B (en) | 1963-07-25 |
Family
ID=3569748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT490761A AT228593B (en) | 1961-06-24 | 1961-06-24 | Corrosion protection for condenser tubes and the like similar Heat exchange surfaces |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT228593B (en) |
-
1961
- 1961-06-24 AT AT490761A patent/AT228593B/en active
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