SHI Yongshuai^1,2，ZHU Jianguo^1,2，WANG Tingting^1,2，ZHANG Zhen^1,3

(1.Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China;2.School of Engineering Science，University of Chinese Academy of Sciences,Beijing 100049,China；3.School of Energy,Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China)

Abstract:In order to broaden the path of efficient and clean utilization of coal,the effects of preheating temperature,equivalence ratio of secondary air and tertiary air,temperature of horizontal combustion chamber and excess air coefficient on the combustion characteristics and NO_x emissions of preheated fuel horizonial injection were studied on the kilowaltt pulverized coal preheating combustion comprehensive evaluation experimental platform.The results show that the temperature of horizontal combustion chamber increases and the mass concentration of NO_x emission decreases with the increase of preheating temperature.The temperature horizontal combustion chamber decreases and the mass concentration of NO_x emission decreases with the increase of secondary air equivalence ratio.The mass concentration of NO_x emission increases with the increase of the temperature of horizontal combustion chamber.With the increase of excess air coefficient,the temperature change of reduction zone in horizontal combustion chamber is small,the temperature in the burnout zone decreases and the mass concentration of NO_x emission increases.

Keywords:preheated fuel;horizontal injection;combustion characteristics;NO_x emission

中图分类号：TQ534                              文献标志码：A

文章编号：1008-5548(2022)04-0054-08

DOI:10.13732/j.issn.1008-5548.2022.04.006

收稿日期： 2022-01-03， 修回日期：2022-03-25，在线出版时间：2022-06-23。

基金项目：中国科学院战略性先导科技专项，编号：XDA21040100。

第一作者简介：师永帅(1998—)，男，硕士研究生，研究方向为预热燃烧技术。E-mail：shiyongshuai@iet.cn。

通信作者简介：朱建国(1977—)，男，副研究员，博士，硕士生导师，研究方向为预热燃烧技术。E-mail：zhujianguo@iet.cn。