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近年来,克拉玛依油田投入多台循环流化床锅炉(CFB)为稠油区热采注汽,但是循环流化床锅炉与其它锅炉相比,磨损比较严重。表1给出了各种锅炉典型的固体物料密度和烟速的范围,从表1的数据可以看出,循环流化床锅炉由于其特定的燃烧方式,炉内的固体物料密度为煤粉炉的几十倍到百倍以上。从循环流化床锅炉的事故率汇总统计(见表2)也可以看出,由于磨损(受热面、耐火材料、风帽等)造成的停炉事故接近停炉总数的50%。锅炉的受热面和耐火材料磨损爆管事故的发生,直接影响循环流化床锅炉的可用率,对安全运行也影响很大,因此在循环流化床锅炉安装检修施工过程中必须加强质量控制,做好防磨处理。
In recent years, Karamay Oilfield put more than one circulating fluidized bed boiler (CFB) for the heavy oil area thermal recovery steam injection, but the circulating fluidized bed boiler compared with other boilers, wear more serious. Table 1 shows the range of typical solid material density and smoke speed of various boilers. As can be seen from the data in Table 1, the circulating fluidized bed boiler has a solid material density in the pulverized coal fired furnace because of its specific combustion mode Dozens of times to a hundred times more. It can also be seen from the summary statistics of accident rates in circulating fluidized bed boilers (see Table 2) that shutdown accidents due to wear (heating surfaces, refractory materials, hoods, etc.) are close to 50% of the total number of shutdowns. The heating surface of the boiler and the occurrence of burst tube explosion of refractory material have a direct impact on the availability of circulating fluidized bed boilers and have a great impact on the safe operation. Therefore, quality control must be strengthened during the installation and maintenance of circulating fluidized bed boilers, Do wear treatment.