双蓄热加热炉换向过程的煤气损失及CO排放  

Fuel gas loss and CO emission of the switching process of regenerative reheating furnaces

作　　者：左春友 孙文强[2,3] Zuo Chunyou;Sun Wenqiang(Thermonergy High-Tech. Co., Ltd.;Department of Thermal Engineering, Northeastern University;State Environmental Protection Key Laboratory of Eco-Industry)

机构地区：[1]赛能杰高新技术股份有限公司 [2]东北大学热能工程系 [3]国家环境保护生态工业重点实验室

出　　处：《冶金能源》2022年第2期44-47,共4页Energy For Metallurgical Industry

基　　金：国家自然科学基金(51734004)。

摘　　要：双蓄热燃烧技术广泛应用于轧钢加热炉。生产过程中发现,高炉煤气和空气双蓄热加热炉在换向过程中存在煤气损失和CO排放的现象,导致了严重的能源浪费和环境污染。分析表明,换向阀对高炉煤气和空气双蓄热加热炉的煤气损失和CO排放有很大影响。该研究对比了各种换向阀的管道布置和共用管道,计算了在高炉煤气和空气双蓄热加热炉上的煤气损失率和CO排放浓度,提出了降低煤气损失和减少CO排放的相关措施。High-temperature air combustion technology is widely used in regenerative reheating furnaces.In practice,fuel gas and CO emission occur in the switching process of regenerative reheating furnaces with the co-preheating of blast furnace gas and air,leading to serious energy waste and atmospheric pollution.It is shown that switching valves contribute a lot to the fuel gas loss and CO emission of reheating furnaces.In this work,the pipe network arrangement and shared pipelines of different types of valves are compared.The fuel gas loss rate and the CO concentration are calculated.Finally,some strategies to reduce the fuel gas loss and CO emission are proposed.

关 键 词：加热炉 蓄热燃烧技术 煤气损失 CO排放 换向阀 

分 类 号：TG3[金属学及工艺—金属压力加工]