影响蜡油加氢加热炉热效率的因素分析及节能措施-《郑州大学学报(工学版)》

文章信息/Info

Title:: Analysis of the Heating Efficiency of Furnace and Energy-saving Measures

Author(s):: WANG Hai-feng1; LI Ming2; HAN Yong-qing1; ZHOU Cai-rong1; 1.School of Chemical Engineering and Energy,Zhengzhou University ，Zhengzhou 450001,China; 2. Luoyang PetrochemicalCompany，Luoyang 471000，China

Keywords:: thermal efficiency ; excess air ratio; carbon monoxide; exhaust gas temperature; thermal radia-tion loss

摘要:: 热效率作为衡量加热炉先进性与操作性能优劣的一个重要指标,直接关系到车间生产能耗的高低.以洛阳石化蜡油加氢加热炉燃烧现状为依据,分析了加热炉热效率的影响因素,并针对性地提出了提高加热炉热效率的改进措施,达到节能的目的.加热炉热效率主要受过剩空气系数,排烟温度,一氧化碳含量等因素的影响.氧含量每升高1％,过剩空气系数增加约6.3％,热效率降低约0.4％；一氧化碳含量每升高100 mg/L,热效率降低约0.05％；排烟温度每升高5℃,热效率降低约0.25％.为提高加热炉效率,氧含量应控制在2％～4％,在此基础上尽可能降低一氧化碳含量,排烟温度控制在125 ～135℃为宜.

Abstract:: Thermal efficiency,as an important indicator to measure the heating furnace advanced and the op-eration, is directly related to a level of energy consumption of the workshop production.Based on a combustionstatus of the wax oil hydrogenation unit heating furnace for Luoyang petrochemical company,some factors ofinfluence on the thermal efficiency of heating furnace were analyzed,and some improvement measures wereput forward to achieve the goal of energy saving. Furnace thermal efficieney is mainly affected by the excess airratio,exhaust gas temperature,carbon monoxide content of factors. the results show that the excess air coeff-cient increased about 6.3%, thermal efficiency reduced about 0.4% when the oxygen content is increased by1 % ; amount of carbon monoxide is increased by 100 mg/L,thermal efficiency is reduced by about 0.05% ;and the exhaust gas temperature is increased by 5 ℃,the thermal efficiency of about 0.25% is lower. In or-der to improve the efficiency of the heating furnace,it is necessary that oxygen content is with in 2% ~4%, exhaust temperature is with in 125 ~ 135 ℃ and as low as possible for the content of carbon monoxide.