摘要
炉膛内温度是炼油厂加热炉最重要的工艺指标之一。用计算燃烧学的方法对哈尔滨石化公司F101立式圆筒加热炉内的温度场进行了计算,计算结果与现场测试结果吻合良好,证明计算所选模型可靠。综合分析各工况热流场的计算结果表明,当过量空气系数在1.0～1.2时,炉膛内平均温度随着过量空气系数的增加而降低,当过量空气系数为1.05时,热效率达到最大值90.2%,同时烟气中NOx浓度达到最高385 mg/m3,低于国家标准400 mg/m3。研究成果可为优化加热炉实际操作参数、提高运行性能提供理论指导。
Furnace temperature is one of the most important technical indicators in refinery cavities. Makes a simulation of temperature distribution inside a vertical cylindrical tube furnace called F101 cavity, which is on running in Harbin Petrochemical Company, with computational combustion method. Computational simulation results prove the reliability of the selected models for the good accordance with the monitor data in the field. Comprehensive analysis of conditions of heat flow field show that the cavity average temperature decreases with air excess ratio increasing within 1. 0 and 1. 2, and thermal efficiency reaches the maximum value of 90.2% while the highest concentration of pollutants NOx in the flue gas rea- ches 385 mg/m^3 , lowering the national standard 400 mg/m^3. The research achievements can provide theoretical guidance for optimizing operating parameters in production processing and improving operating performances.
出处
《工业锅炉》
2012年第4期22-26,共5页
Industrial Boilers
基金
中国石油大学(北京)基金(KYJJ2012-04-11)
关键词
立式圆筒加热炉
过量空气系数
温度场
NOx
浓度
计算燃烧学
vertical cylindrical tube furnace
air excess ratio
temperature distribution
NOx concentration
computational combustion
