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过程工程学报 ›› 2021, Vol. 21 ›› Issue (6): 687-694.DOI: 10.12034/j.issn.1009-606X.220220

• 流动与传递 • 上一篇    下一篇

水冷壁式气化炉内侧渣钉对气化炉传热的影响

夏 英， 阚浩勇， 范 辉， 李 平*   

  1. 1. 宁夏大学省部共建煤炭高效利用与绿色化工国家重点实验室
    2. 宁夏大学化学化工学院
  • 收稿日期:2020-07-12 修回日期:2020-07-24 出版日期:2021-06-28 发布日期:2021-06-28
  • 通讯作者: 李平 liping@nxu.edu.cn
  • 基金资助:
    宁夏回族自治区科技重大专项;宁夏回族自治区国内一流学科建设项目资助

Effect of slag nails on heat transfer of water-cooled gasifier

Ying XIA,  Haoyong KAN,  Hui FAN,  Ping LI*   

  1. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, China
  • Received:2020-07-12 Revised:2020-07-24 Online:2021-06-28 Published:2021-06-28

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摘要： 煤气化炉的水冷壁对于维持气化炉在高温高压下安全稳定运行具有重要作用。利用ANSYS软件对水冷壁内侧壁面的温度分布进行模拟，模拟分析了渣层内有渣钉、无渣钉和用等面积肋片代替渣钉三种状况对传热过程的影响，考察了渣钉排布方式对水冷壁传热的影响。结果表明，布置渣钉可有效提高传热效率，及时带走气化炉内多余的热量；采用夹角小、三角形排布的渣钉排布方式传热效率更好，温度分布更均匀。该模拟计算对于水冷壁气化炉的传热结构设计及长周期安全运行具有实际意义。

关键词: 渣钉, 水冷壁, 气化炉, 传热, 数值模拟

Abstract: The water-cooled wall of the gasifier plays an important role in maintaining the safe and stable operation of the gasifier under high temperature and pressure. The ANSYS software was used to simulate the temperature distribution on the inner wall surface of the water-cooled wall. The effects of three conditions including slag nails, no slag nails, and replacement of slag nails by gills of equal area on the heat transfer process were investigated. The influence of the arrangement of nails on the temperature of water-cooled wall was researched. The results showed that the slag nails can effectively improve the heat transfer efficiency and take away the excess heat in the gasifier in time. The slag nails with a small angle and a triangular arrangement had better heat transfer efficiency and more uniform temperature distribution. This simulation calculation was significant for the design of heat transfer structure and long-term safe operation of water-cooled wall gasifier.

Key words: Slag nail, Water-cooled wall, Gasifier, Heat transfer, Numerical simulation