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[1]时训先,邓权龙,蒋仲安,等.石棉破碎车间粉尘质量浓度分布的数值模拟及实测[J].中国安全生产科学技术,2017,13(6):179-184.[doi:10.11731/j.issn.1673-193x.2017.06.030]
　SHI Xunxian,DENG Quanlong,JIANG Zhongan,et al.Numerical simulation and measurement on mass concentration distribution of dust in asbestos crushing plant[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(6):179-184.[doi:10.11731/j.issn.1673-193x.2017.06.030]
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石棉破碎车间粉尘质量浓度分布的数值模拟及实测
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年6期
页码:
179-184
栏目:
现代职业安全卫生管理与技术
出版日期:
2017-06-30

文章信息/Info

Title:
Numerical simulation and measurement on mass concentration distribution of dust in asbestos crushing plant
文章编号:
1673-193X(2017)-06-0179-06
作者:
时训先1; 邓权龙2; 蒋仲安2; 陈兵1
1.中国安全生产科学研究院，北京 100012；2.北京科技大学 土木与资源工程学院，北京 100083
Author(s):
SHI Xunxian1;  DENG Quanlong2;  JIANG Zhongan2;  CHEN Bing1
1. China Academy of Safety Science & Technology, Beijing 100012, China; 2. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
关键词:
石棉选矿厂; 破碎车间; 粉尘质量浓度; 数值模拟; 现场测定
Keywords:
asbestos concentrator;  crushing plant;  dust mass concentration;  numerical simulation;  in-situ measurement
分类号:
X964
DOI:
10.11731/j.issn.1673-193x.2017.06.030
文献标志码:
A
摘要:
为改善破碎车间内部粉尘浓度超标的现状，掌握石棉选矿厂破碎车间内粉尘浓度的分布规律，依据气固两相流、气溶胶力学等相关理论，建立粉尘在空气内运动、扩散及沉降方程。以西南某石棉选矿厂破碎车间为研究背景，采用计算机流体力学的离散相模型，运用Fluent软件对石棉破碎车间粉尘质量浓度分布进行数值模拟，并与现场粉尘浓度实测数据比较分析。研究表明：模拟结果和实测数据相吻合；粉尘集中在胶带输送室和破碎机给料口附近，全尘浓度最大为86.24 mg/m3，纤维浓度最高为12.46 f/mL；粉尘浓度随着距破碎机入口的距离增加而逐渐变小；地面呼吸带高度粉尘浓度相对处于较低水平，维持在9~16 mg/m3区间。
Abstract:
In order to improve the situation of dust concentration exceeding and master the distribution laws of dust concentration in the crushing plant of asbestos concentrator, the movement, diffusion and settlement equations of dust in air were established based on the theories of gas-solid two-phase flow and aerosol mechanics. Taking the crushing plant of a asbestos concentrator in southwest as the research background, and adopting the discrete phase model of computational fluid dynamics, Fluent software was used to simulate the mass concentration distribution of dust in the asbestos crushing plant. By comparing with the measurement data of in-situ dust concentration, the si-mulation results were essentially coincident with the measured data. The results showed that the dust concentrated in the belt conveyor and the crusher feed port, the maximum total dust concentration was 86.24 mg/m3, and the maximum fiber concentration was 12.46 f/mL. As the distance away from the entrance of the crusher increased, the dust concentration gradually decreased. The dust concentration was relatively low in the height of ground breathing zone, maintaining in the range of 9-16 mg/m3.

参考文献/References:

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备注/Memo

备注/Memo:
国家科技支撑计划资助项目(2015BAK40B02)；中国安全生产科学研究院基本科研业务费专项资金项目（2017JBKY11）
更新日期/Last Update: 2017-07-11