生物质气化套管采暖热环境数值模拟  

Numerical Simulation of Thermal Environment for Double-tube Heating of Biomass Gasification

作　　者：闫放[1] 许开立[1] 姚锡文[1] 张秀敏[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2016年第6期886-889,894,共5页Journal of Northeastern University(Natural Science)

基　　金：农业部农村能源综合建设项目(2015-36);辽宁省自然科学基金资助项目(2013020137)

摘　　要：为保障我国北方的生物质气化站在冬季可以安全运行,提出一种利用轴流风机与套管将生物质气化反应的余热送入净化间进行采暖的方法.采用计算流体力学(CFD)方法对采暖后的生物质气化站净化间热环境进行模拟,并使用Fluent进行计算,得出在沈阳市冬季温度最低(243.15 K)的情况下可将净化间的温度提升至254 K以上;若对净化间围护采取保温措施,则可使温度继续提高,使净化间内温度达到278 K以上,进而满足防冻要求.从而证明套管采暖方案的可行性,并为我国北方生物质气化站防冻改造提供参考.In order to guarantee safety operation of the biomass gasification station in the north of China in winter, a method which makes the waste heat of biomass gasification reaction go into purification room by using axial flow fan and double-tube is proposed. Simulation is performed for heat environment of the heated purification room of the biomass gasification station by computational fluid dynamics （CFD） approach using Fluent. The temperature of purification room can reach to 254 K when the situation temperature in Shenyang is 243.15 K. The temperature of purification room will continue to enhance to 278 K when the heat measures are taken to envelope. And the requirement of freeze prevention is met and the feasibility of double-tube heating is proved. It provides some references for the transformation of freeze prevention of biomass gasification station in northern China.

关 键 词：生物质气化 防冻 套管 计算流体力学 

分 类 号：X913.4[环境科学与工程—安全科学]