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兰州炼油厂同轴式催化裂化装置烟气轮机进口管线(φ800～φ1000mm、100m长),管内烟气温度高达650℃～700℃,长期以来,由于保温不当,造成热量的大量损失,很可惜。1983年6月,在装置技术改造之后,对烟气管线进行了保温技术改造。保温材料选用了北京新型建筑材料厂的新型保温材料—龙牌岩棉保温带(LYD)。保温结构采用管外热面卷扎岩棉保温带两层(厚度100mm),外用铁皮(0.7mm)围护。进口处几对大法兰及高温平板闸
Lanzhou refinery co-axial catalytic cracking unit flue gas turbine inlet pipe (φ800 ~ φ1000mm, 100m long), the tube flue gas temperature as high as 650 ℃ ~ 700 ℃, for a long time, due to improper insulation, causing a lot of heat loss, a pity. In June 1983, after the technological transformation of the installation, the thermal insulation technology renovation of the flue gas pipeline was carried out. Insulation selected Beijing New Building Materials Plant’s new insulation material - Long licensing rockwool insulation zone (LYD). Insulation structure using the outer surface of the tube rolled rockwool insulation two layers (thickness 100mm), external metal skin (0.7mm) enclosure. The entrance of several pairs of large flanges and high temperature plate gate