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抚顺石油三厂加氢车间纯对流型加热炉,实际热负荷为323万大卡/时,烧的是含氢量较高的自产瓦斯,瓦斯干净,压力平稳。该炉在节能改造中安装了一台钢水热管预热器,自1983年4月中旬投用以来,运转正常,与以前采用的钢管空气预热器相比。体积缩小三分之二,特别适用于场地空间窄小的老装置。初步标定结果如下:空气温升 120℃烟气入口温度 242℃烟气出口温度 187℃烟气侧阻力降 5毫米水柱回收热量 22万大卡/时提高加热炉热效率 7%经计算,每年收益折合人民币2万元,一次投资是1万7千元,11个月就可回收全部一次投资。热管及其主要零件见图1,管内采用磷
Fushun Oil Plant hydrogenation workshop pure convection heating furnace, the actual thermal load of 323 million kcal / h, burning high hydrogen content of self-produced gas, gas clean, stable pressure. The furnace in the energy-saving retrofit installed a steel heat pipe preheater, put into use since mid-April 1983, the normal operation, compared with the previously used steel air preheater. Reduce the size of two-thirds, especially for the small space of the old device space. The initial calibration results are as follows: air temperature rise 120 ℃ flue gas inlet temperature 242 ℃ flue gas outlet temperature 187 ℃ flue gas side resistance drop 5 mm water column recovery heat 220,000 kcal / heating furnace to improve thermal efficiency 7% Calculated, the annual return equivalent RMB 20,000 yuan, an investment is 17,000 yuan, 11 months can be recycled once all investment. Heat pipe and its main components shown in Figure 1, the pipe with phosphorus