关键词: 高温绝热式分离器, 耐磨砖, 耐磨可塑料, 膨胀缝, Y型抓钉, 靶区

Abstract:

For the 300 MW high temperature insulation cyclone of Baima Company after long time running,the expansion joints and gaps between bricks enlarged,the high temperature flue gas and materials entered the wall,causing a large area of refractory brick spalling off,over-temperature of the cyclone shell,shell redness and other problems.Improvement measures were put forward:weld heat-resistant anchor parts on the outer cylinder wall,then lay 250 mm thick lightweight insulation plastic materials in the insulation layer and 150 mm thick SiC abrasion-resistant plastic materials on the working layer;optimize construction,design expansion joints at the areas such as direct part and top of the cyclone,the inlet flue pipe,and bake the oven strictly according to the heating curve.The improved high temperature insulation cyclone was used for 5 years,with no shell redness,showing obvious improvement effect.

Key words: high temperature insulation cyclone, wear-resistant brick, wear-resistant plastic refractory, expansion joint, y-nail, target area