Tecnologia de construção de materiais refratários para caldeiras de leito fluidizado circulante

1. The construction process of wear-resistant materials in the combustion chamber

As shown in Figure 1, this is the construction process of wear-resistant castables on the water-cooled wall tubes in the lower part of the combustion chamber of a circulating fluidized bed boiler. The wear-resistant materials are fixed by metal pins welded on the surface of the tubes. Since this area is the dense phase area in the lower part of the combustion chamber, the material concentration is very high, and the mixing and turbulent flow are very strong, so the wear is very serious. In order to prevent wear, a certain thickness of refractory and wear-resistant castables must be lined in the lower dense phase area.