In order to avoid the safety risk caused by sedimentation and scaling on the surface of the fire tube of the oilfield fire tube heating furnace and the health and safety risk of working personnel caused by manual cleaning, a set of online rotary descaling devices installed on the outer wall of the fire tube of the heating furnace are developed. It can vertically remove the sediment on the fire tube outer wall by 360 ° with no dead angle, ensure heat transfer efficiency and heating furnace operation heat efficiency and reduce fuel gas consumption; avoid the long-term local overheating work of the fire tube caused by heat transfer behind time, reduce the probability of fire tube bulge deformation and perfora-tion,prolong the fire tube service life,reduce maintenance costs and avoid fire disasters and other acci-dents. Compared with the fire tube heating furnace with the same load, the furnace equipped with online rotary descaling devices can prolong the maintenance period of the fire tube, and the single de-vice can reduce the operation and maintenance cost by 298000 yuan per year.%为避免油田火筒式加热炉火管表面杂质淤积结垢引发的安全隐患和人工清理对施工人员健康安全带来的危害,研制出一套安装在火筒炉火管外壁的在线旋转除垢装置,可360°无死角旋转清除火管外壁上的淤积物,保证传热效率和加热炉运行热效率,减少燃气消耗;避免火管因热量不能及时传递而局部长期过热工作,降低火管鼓包变形、穿孔发生的概率,延长火管使用寿命,降低维修费用,避免火灾等事故.加装在线旋转除垢装置的火筒炉与同负荷的火筒式加热炉相比可延长火管维修周期,单台设备每年可降低火筒炉运行维修维护费用29.8万元.
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