摘要
烟气酸露点是制约深度余热回收技术的重要因素,准确预测该数值对避免低温腐蚀、降低排烟热损失及提高锅炉效率有重要意义。在对几种常用酸露点计算式分析比较的基础上,采用最小二乘法对相关实验数据进行拟合后得到拟合式,通过理论计算及近年来相关学者现场测量数据对相关公式进行对照分析,并使用自行设计的酸露点测量装置对本文提出的计算式的计算数值进行了验证。结果表明,本文提出的计算式计算数值分布范围更加合理,当SO3体积分数低于20 mL/m3时具有更高的计算精度。
The acid dew point of flue gas is an important factor that restricts deep waste heat recovery technology. Accurate prediction of this value is of great significance for avoiding low temperature corrosion, reducing heat loss of flue gas and improving boiler efficiency. Based on the analysis and comparison of common calculation formulas of acid dew point, the least square method is used to fit the relevant experimental data to obtain the fitted formula, which is analyzed through theoretical calculation and field measurement data of relevant scholars in recent years. The calculation results of the formula proposed in this paper are verified by using self-designed measurement device of acid dew point. The result shows that the formula proposed in this paper not only has a more reasonable range of numerical prediction, but also has higher accuracy than others when the volume fraction of SO3 is below 20 mL/m^3.
作者
李加护
王小涛
张猛
王太
谢英柏
阎维平
LI Jiahu;WANG Xiaotao;ZHANG Meng;WANG Tai;XIE Yingbai;YAN Weiping(School of Energy and Power Engineering, North China Electric Power University, Baoding 071003, China)
出处
《热力发电》
CAS
北大核心
2019年第4期110-115,共6页
Thermal Power Generation
基金
山西省重点实验室开放基金(SKLCHECUCFB-201701)~~
关键词
酸露点
计算式
余热利用
最小二乘法
低温腐蚀
排烟温度
锅炉效率
acid dew point
calculation formula
waste heat utilization
least square method
low temperature corrosion
exhaust gas temperature
boiler efficiency