Operation of the extreme heating channels in coke batteries

Abstract

Defects in coke-oven linings of coke batteries are analyzed. In the course of operation, the properties of the Dinas brick change on account of the formation of silicate melts that move through a capillary system within the brick from hotter to cooler sections of the lining. Melt migrates from the vertical heating channels to the coke chambers. In contrast to most of the heating channels, significant temperature gradients arise between the extreme and adjacent heating channels on account of the great difference in the quantity of heating gas supplied. The temperature gradients facilitate melt migration in this zone not only from the vertical channel to the chamber but also between vertical channels. This factor accelerates lining wear at the extreme heating channels and must be taken into account in regulating the heating conditions at the extreme pairs of heating channels.