Evaluating performance in the steady-state loading of elements of the reaction tubes of an EP-300 unit made of alloy 49Kh26N33S2B2

Experimental data on high-temperature creep of the material of the tubular reaction coils of a unit that produces ethylene are used to obtain graphs showing the distribution of the stresses that act through the thickness of the tube wall. The tubes are made of high-strength alloy 45Kh26N33S2B2. The...

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Bibliographic Details
Published in:Metallurgist (New York) 2009-03, Vol.53 (3-4), p.225-232
Main Authors: Oryshchenko, A. S., Popova, I. P., Utkin, Yu. A., Odintsov, N. B.
Format: Article
Language:English
Subjects:
Allowances
Alloying elements
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coils
Creep rupture strength
Ethylene
Materials Science
Metallic Materials
Nonuniformity
Tubes
Walls
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Summary:Experimental data on high-temperature creep of the material of the tubular reaction coils of a unit that produces ethylene are used to obtain graphs showing the distribution of the stresses that act through the thickness of the tube wall. The tubes are made of high-strength alloy 45Kh26N33S2B2. The performance of the tubular elements of the coil during steady-state loading is evaluated using the criterion of rupture strength, with allowance being made for the nonuniformity of the temperature distribution and the changes in the parameters of the material of each tube through the thickness of its wall. It is shown that the temperature gradient which exists in the thickness direction is an important parameter that affects the tube’s performance.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-009-9159-7