AT69876B - Heating device for generating high temperatures with heat transfer through a medium located in an enclosed space. - Google Patents
Heating device for generating high temperatures with heat transfer through a medium located in an enclosed space.Info
- Publication number
- AT69876B AT69876B AT69876DA AT69876B AT 69876 B AT69876 B AT 69876B AT 69876D A AT69876D A AT 69876DA AT 69876 B AT69876 B AT 69876B
- Authority
- AT
- Austria
- Prior art keywords
- high temperatures
- heat transfer
- heating device
- generating high
- enclosed space
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 title claims description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 10
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 10
- 239000007788 liquid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Description
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sehr billig zu haben.
Das Anilin verhält sich ähnlich bei Temperaturen bis zu 4900 C, also auch bei einer erheblich über die kritische Temperatur des Anilins (4250 C) hinausgehende Erwärmung.
In gewissen Fällen ist es zweckmässig, Naphtalin und Anilin miteinander zu mischen, wodurch die Beschickung der Rohre erleichtert wild. Das Naphtalin nimmt nämlich in seiner schuppenartigen festen Form dreimal so viel Raum ein, als im geschmolzenen Zustande, und infolgedessen ist zur genügenden Füllung der Rohre mit reinem Naphtalin in der Regel eine Veiflüssigung desselben notwendig, die aber wegen seines hohen Schmelzpunktes (79 C) unbequem ist.
Dagegen schmilzt beispielsweise eine Mischung von 60% Naphtalin und 40% Anilin bei einer wesentlich tieferen Temperatur zu einer homogenen Flüssigkeit, die, wenn sie abgekühlt wird, erst bei 580 C Kristalle abscheidet, und bei noch weiterem Abkühlen eine steife, beim Umkehren des Rohres nicht ausfliessende Masse bildet.
Die hoogcre Lösung wird flüssig in berechneten Quanten in die vorgewärmten Rohre gefüllt und bildet ùann in den Rohren eine feste Masse, die beim Zuschweissen derselben nicht herausfliessen kann. Die Stofikombination zeigt, weiter auch insofern ausgezeichnete Eigenschaften, als den nachteiligen Wirkungen zu hoher Temperaturen an den Feuerenden automatisch vorgebeugt wird. Beim Heizen geht der der leichter flüchtige Stoff (im gegebenen Falle das Anilin) zu einem relativ grösseren Anteil in den Dampfraum über und bewirkt schnelle und gleichmässig Temperaturverteilung über das ganze Rohr, während sich im Feuerende selbst, wo die höchsten Temperaturen bestehen, das widerstandsfähigere Naphtalin ansammelt.
Durch Versuche ist festgestellt worden, dass die genannten Stoffe bei den hohen in Betracht kommenden Temperaturen der thermischen und katalytischen Dissoziation in der voUkomnwnstpl1 Weise widerstehen.
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very cheap to have.
The aniline behaves similarly at temperatures of up to 4900 C, i.e. even if it is heated significantly above the critical temperature of the aniline (4250 C).
In certain cases it is advisable to mix naphthalene and aniline together, which makes it easier to load the pipes. The naphthalene in its scale-like solid form takes up three times as much space as in the molten state, and consequently, in order to adequately fill the tubes with pure naphthalene, it is usually necessary to liquefy it, which is inconvenient because of its high melting point (79 C) is.
On the other hand, a mixture of 60% naphthalene and 40% aniline, for example, melts at a much lower temperature to form a homogeneous liquid which, when cooled, does not separate crystals until 580 C, and if it is cooled further, a stiff liquid does not occur when the tube is turned around outflowing mass forms.
The high solution is filled into the preheated pipes in liquid form in calculated quanta and then forms a solid mass in the pipes which cannot flow out when they are welded shut. The combination of substances also shows excellent properties in that the adverse effects of excessively high temperatures at the ends of the fire are automatically prevented. When heating, a relatively larger proportion of the more volatile substance (in the given case the aniline) passes into the vapor space and causes rapid and even temperature distribution over the entire pipe, while in the end of the fire itself, where the highest temperatures exist, the more resistant naphthalene accumulates.
Experiments have shown that the substances mentioned withstand thermal and catalytic dissociation in the best possible way at the high temperatures involved.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT69876T | 1913-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT69876B true AT69876B (en) | 1915-09-10 |
Family
ID=3591671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT69876D AT69876B (en) | 1913-07-21 | 1913-07-21 | Heating device for generating high temperatures with heat transfer through a medium located in an enclosed space. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT69876B (en) |
-
1913
- 1913-07-21 AT AT69876D patent/AT69876B/en active
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