东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (7): 1017-1021.DOI: 10.12068/j.issn.1005-3026.2017.07.022

• 资源与土木工程 • 上一篇    下一篇

生物质气化风机套管采暖系统非稳态模拟

闫放， 许开立， 张秀敏   

  1. (东北大学 资源与土木工程学院， 辽宁 沈阳110819)
  • 收稿日期:2016-02-16 修回日期:2016-02-16 出版日期:2017-07-15 发布日期:2017-07-07
  • 通讯作者: 闫放
  • 作者简介:闫放(1989-)，男，湖南长沙人，东北大学博士研究生； 许开立(1965-)，男，山东郓城人，东北大学教授，博士生导师.
  • 基金资助:
    农业部农村能源专项(2015-36).

Unsteady Simulation on Biomass Gasification Heating System with Fan & Double-Tube

YAN Fang， XU Kai-li， ZHANG Xiu-min   

  1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.
  • Received:2016-02-16 Revised:2016-02-16 Online:2017-07-15 Published:2017-07-07
  • Contact: XU Kai-li
  • About author:-
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摘要： 针对装设防火墙导致我国北方生物质气化站存在湿式净化装置冬季防冻的问题，提出了一种基于风机套管的余热回收系统.采用商用CFD软件Fluent以及k-ε模型对采暖效果进行非稳态数值模拟，结果表明，当进气口空气流速分别为9m/s(供暖90min后)，13m/s(供暖40min后)满足防冻要求，证明了技术的可行性;同时模拟了进气口空气流速分别为5，9，13m/s在不同时刻的采暖效果，得出增大风机风量可提高采暖效果、缩短达到防冻要求所需时间以及使得净化间内温度分布更加均匀，但风机风量不可无限增加，需要考虑规范对风速的限制以及能耗的增加.

关键词: 生物质气化, 采暖, 风机, 套管, 数值模拟

Abstract: Aimed at solving the antifreezing problem of the wet purification device of biomass gasification station due to the installation of the firewall in winter time of north China， a waste-heat recovery system based on fan & double-tube is proposed. The Fluent and k-ε model is used to simulate the unsteady state of heating. The results indicate that the antifreezing requirement can be met in 90 or 40min when the inlet air velocity is 9 or 13m/s， respectively. Then the feasibility of the technique can be proved. The heating effects of different inlet air velocities of 5， 9， 13m/s at different times are also simulated. It shows that the heating effect can be raised and the time needed to reach the antifreezing requirement can be shortened and the temperature distributed in purification room can be more even by increasing the fan air volume. But the air speed should be restricted according to the corresponding standard and the energy consumption considerations.

Key words: biomass gasification, heating, fan, double-tube, numerical simulation

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