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采用实验室流态床燃烧器模拟装置评定氯化物对埋管耗损的影响.该模拟装置能重现埋管底部遭受密集颗粒的冲刷,其运行参数可控,以接近沸腾流态床所遇工况.HC1被选为Cl源加入流态化空气中,其含量在 50~400μg/g间可调.试验温度范围由室温至 400℃.以 1018低碳钢棒代表埋管,床体为平均粒度800μm的工业用SiO2砂.结果表明,HCl明显地加剧材料的耗损,且其随HCl浓度的增加而加剧.本研究所获HCl加剧耗损程度的数量级与报道的现场结果相当.
Laboratory fluidized bed combustor simulation was used to assess the effect of chloride on tube wear. The simulator reproduces the erosion of dense particles at the bottom of the tube and its operating parameters are controlled to approximate the conditions encountered with boiling fluidized beds. HC1 was selected as a Cl source to be added to the fluidized air and its content was adjustable between 50 and 400 μg / g. The test temperature range from room temperature to 400 ℃. To 1018 representatives of low carbon steel tube, the bed for the average particle size of 800μm industrial SiO2 sand. The results show that HCl significantly exacerbates material depletion, which aggravates with increasing HCl concentration. The order of magnitude of depletion of HC1 obtained in this study is comparable to the reported site results.