| Autor: |
Strelov, K., Perepelitsyn, V., Bichurina, A. |
| Zdroj: |
Refractories; 1973, Vol. 14 Issue 1/2, p116-121, 6p |
| Abstrakt: |
Dinas in service in the wall regions of coking furnaces acquire a zoned structure with different thermal conductivity levels in the zones. The thermal shock resistance of the hot zone is about four times less than that of the remaining zones. The thermal conductivity of the hot zone is determined by the extent of the tridymite crystals in the direction of the thermal current and the degree of development of the direct bond of crystal-crystal. In the zone arranged on the coking side the Dinas is carbonized, preventing growth of crystals of tridymite. The porosity in the range 15-25% does not have any decisive influence on the thermal conductivity of the coking Dinas. To increase the thermal conductivity of the coking Dinas we recommend the incorporation during the production process of additives which control the growth of tridymite crystals, develop a direct bond between them, and remove the carbon during service. An increase in the thermal conductivity of the Dinas is economically effective. An increase in the thermal conductivity of the wall Dinas of 1 kcal/(m · h · deg) reduces the coking time by about 1.8 h, which is equivalent to increasing the output of the coking batteries by 15%. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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