[1]陈延信1,2,施寿芬1,等.外循环式高固气比分解炉气相流场的数值模拟[J].西安建筑科技大学学报:自然科学版,2011,43(01):48-052.[doi:DOI:10.15986/j.1006-7930.2011.01.004]
 ,,et al.The numerical simulation of flow-fieldin high solid to gas ration external circulating precalciner[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2011,43(01):48-052.[doi:DOI:10.15986/j.1006-7930.2011.01.004]
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外循环式高固气比分解炉气相流场的数值模拟()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
43
期数:
2011年01期
页码:
48-052
栏目:
出版日期:
2011-02-28

文章信息/Info

Title:
The numerical simulation of flow-field
in high solid to gas ration external circulating precalciner
文章编号:
1006-7930(2011)01-0048-05
作者:
陈延信1施寿芬1徐德龙1
(1.西安建筑科技大学粉体工程研究所,陕西西安710055;
2.西部建筑科技国家重点实验室(筹),陕西西安710055)
Author(s):
CHEN Yan-xin1SHI Shou-fen1XU De-long1
(1.Institute of Powder Engineering,Xi′an University of Architecture & Technology,Xi′an 710055,China
2.State Key Laboratory of Architecture Science and Technology in West China(XAUAT),Xi’an 710055,China
关键词:
 分解炉气相湍流k-ε模型数值模拟
Keywords:
precalcinergas turbulent flowk-εmodelnumerical simulation
分类号:
TU522.064
DOI:
DOI:10.15986/j.1006-7930.2011.01.004
文献标志码:
A
摘要:
:外循环式分解炉是一种新型的反应器,主要用于新型干法水泥生产工艺.理论计算表明该炉型具有更
稳定的热工性能和更高的出炉物料表观分解率.采用带旋流修正的k-ε双方程模型对外循环式分解炉内的气
相湍流流场进行了数值模拟.分析了该分解炉内的气流流线特征和不同截面的压力分布和气流速度情况.结
果表明:受三次风偏心进入的作用,气流在分解炉下部形成较为强烈的返混和旋流效应,进入分解炉上部后趋
于稳定.流体进入旋流分离器后,形成稳定的下行旋转流动,接近出口时,受流动空间缩小的影响,流体加速流
出分解炉.以上结果验证了该分解炉设计合理,为煤粉在炉内的燃烧、碳酸盐的分解提供了较好的流场.
Abstract:
Abstract:External circulating precalciner is a new type of reactor,which is mainly applied to the new dry process for the
cement manufacture.Theoretical calculation indicates that the external circulating precalciner possess more stability of
thermal performance and higher apparent resolution rate of the discharge material.The numerical simulation of the gas
flow field in the external circulating precalciner based on the RNG k-εmodel is introduced.The characteristics of the gas
flow stream line in the precalciner and the distribution of the pressure and gas velocity with different parts were analyzed.
The results indicated that a relatively strong back mixing and rotational flow field formed in the under-part by the effect of
the tertiary air partiality into precalciner,and the flow field becomes stable since the gas enters the top of the precalciner.
When the fluid flows into the rotational flow separator,the steady downstream spin is formed.Affected by the reduction
of flow space close to export,fluid flowing quicken outflow the precalciner.The simulation results verified the precalciner
for the pulverized coal burning and the carbonate decomposing was designed reasonably.

参考文献/References:

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第1期      陈延信等:外循环式高固气比分解炉气相流场的数值模拟51
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备注/Memo

备注/Memo:
收稿日期:2010-05-24  修改稿日期:2010-11-12
基金项目:陕西省重大科技创新资助项目(2010ZKC0117,2010ZKC0507)
作者简介:陈延信(1974-),男,安徽庐江人,博士研究生,主要从事新型干法水泥工艺研究和难选铁矿石的资源化开发研究.
更新日期/Last Update: 2015-11-01