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孤东采油厂注汽锅炉热效率测试分析显示,在平均注汽干度70%情况下,平均吨汽耗油量达68kg,比胜利石油管理局下发的湿蒸汽发生器标准(Q/SL0128-88)中规定的65kg高出3kg,但平均热效率只有84.5%,造成注汽成本偏高。对两台锅炉的排烟温度、过剩空气系数等进行测试表明,锅炉排烟温度高、过剩空气系数大,雾化参数不匹配,是影响热效率低,进而导致吨汽耗油高的主要因素。采取以下方法提高燃油热效率:强制停炉清灰,安装给水预热器,定期更换对流段腐蚀和结垢严重的翅片管,有效降低排烟温度;优化风门开度、油阀开度、燃油压力,确定合理的过剩空气系数;确定合理油温、合理雾化压力、合理油压,从而确定合理的雾化压力参数。上述措施实施后,在平均注汽干度70%情况下,吨汽耗油量为64.2kg,平均热效率为86.68%,节省燃油382.8t,产生直接经济效益114.8万元。
The thermal efficiency test and analysis of steam injection boiler in Gudong Oil Production Plant showed that the average steam consumption per tonne reached 68kg under the condition of 70% average steam injection dryness, which is higher than the standard of wet steam generator issued by Shengli Petroleum Administration (Q / SL0128- 88) 65kg higher than 3kg, but the average thermal efficiency of only 84.5%, resulting in high steam injection costs. Tests on the exhaust gas temperature and excess air ratio of two boilers show that the high exhaust temperature of the boiler, the excess air coefficient and the mismatch of the atomization parameters are the main factors that affect the low thermal efficiency and the high fuel consumption per ton of gasoline. Take the following methods to improve the thermal efficiency of the fuel: forced shutdown of the ash, the installation of water preheater, regular replacement of convection section corrosive and scaling serious finned tube, effectively reduce the exhaust gas temperature; throttle optimization, valve opening, fuel Pressure, to determine a reasonable excess air coefficient; to determine a reasonable oil temperature, reasonable atomization pressure, reasonable pressure to determine a reasonable atomization pressure parameters. After the implementation of the above measures, with an average steam injection dryness of 70%, the tonne gas consumption is 64.2kg, the average thermal efficiency is 86.68%, fuel consumption is 382.8t, and direct economic benefits are generated at 1.148 million yuan.