文献类型：期刊文献

英文题名：Performance evolution of industrial radiant syngas cooler with radiation screens using numerical simulation

作者：Wang, Lei[1];Qiu, Jianyong[1];He, Qing[1];Guo, Qinghua[1];Xu, Jianliang[1];Ding, Lu[1];Yu, Guangsuo[1,2]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]Ningxia Univ, Coll Chem & Chem Engn, State Key Lab High Efficiency Coal Utilizat & Gre, Yinchuan, Ningxia, Peoples R China

年份：2023

卷号：101

期号：1

起止页码：492

外文期刊名：CANADIAN JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20221311843343);WOS:【SCI-EXPANDED(收录号:WOS:000771777300001)】；

基金：This project is supported by the National Key Research and Development Program of China (2018YFB0605000).

语种：英文

外文关键词：heat transfer; industrial radiant syngas cooler; numerical simulation; steam output

摘要：Radiant syngas cooler (RSC) is an important piece of equipment for heat recovery and steam generation in the gasification plant. In this work, the industrial RSC model of an opposed multi-burner coal-water-slurry gasification device is established, and the heat recovery performance of RSC is studied by numerical simulation method. The simulation result of the total heat transfer rate is compared with the industrial operation data. The effect of different operating parameters on RSC is further studied, including the operating load, inlet syngas temperature, and ash deposition thickness. The results show that there is a spindle-shaped high-temperature zone on the circumferential membrane wall surface with a distance of 6.5 m from the top under the basic operating conditions. There is also an obvious high-temperature zone in the mid-upper section of the fire side for the radiation screen. When the operating load decreases from 100% to 60%, the outlet syngas temperature decreases by 167 K, and the steam output decreases by 22%. The influence of inlet syngas temperature on outlet syngas temperature and steam output is approximately linear. For every 10 K drop of inlet syngas temperature, the outlet syngas temperature decreases by 10 K, and the steam output decreases by 0.91 x 10(3) kg/h. With the increase of the ash deposition thickness, the surface temperature and heat flux of the water wall rise and the outlet syngas temperature increases, while the steam output decreases. The research provides guidance for the design and stable operation of RSC in the radiation-quenching gasification process.