Abstract
The refractory layer plays an important role in the heat transfer process in an entrained flow gasifier. The thickness and construction of refractory bricks greatly affect the space utilization of the gasifier chamber as well as the temperature distribution of the metal wall. In this paper, thermal resistance distribution of the refractory wall in the gasifier was studied. Besides, several different refractory materials and refractory lining schemes were considered for the refractory layer of the gasifier. The temperature distributions of the refractory layer were discussed in different schemes. Heat transfer models of slag and refractory layer were validated by available experimental data. The results showed that the furnace utilization and feed rate were the highest, and the slag attack tendency was lowest, when fire brick, insulation brick, and insulation coating were adopted as the refractory layer.
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