管道内预混合成气爆炸特性

doi:10.11949/j.issn.0438-1157.20180610

化工学报 ›› 2018, Vol. 69 ›› Issue (10): 4486-4494.DOI: 10.11949/j.issn.0438-1157.20180610

• 过程安全 • 上一篇

管道内预混合成气爆炸特性

余明高^1,2, 栾鹏鹏¹, 郑凯¹, 阳旭峰¹, 万少杰¹, 段玉龙³

1. 重庆大学煤矿灾害动力学与控制国家重点实验室, 重庆 400044;
2. 河南理工大学安全科学与工程学院, 河南焦作 454003;
3. 重庆科技学院安全工程学院, 重庆 401331

收稿日期:2018-06-05 修回日期:2018-07-10 出版日期:2018-10-05 发布日期:2018-10-05
通讯作者: 郑凯
基金资助:
国家自然科学基金项目（U1361205，51574111，50974055）；煤矿灾害动力学与控制国家重点实验室自主研究课题重点项目（2011DA105287-ZD201401）。

Characteristics of premixed syngas/air explosion in horizontal duct

YU Minggao^1,2, LUAN Pengpeng¹, ZHENG Kai¹, YANG Xufeng¹, WAN Shaojie¹, DUAN Yulong³

1. State Key Laboratory of Coal Mine Disaster Dynamics Control, Chongqing University, Chongqing 400044, China;
2. School of Safety Science Engineering, Henan Polytechnic University, Jiaozuo 454003, Henan, China;
3. College of Safety Engineering, Chongqing University of Science & Technology, Chongqing 401331, China

Received:2018-06-05 Revised:2018-07-10 Online:2018-10-05 Published:2018-10-05
Supported by:
supported by the National Natural Science Foundation of China (U1361205, 51574111, 50974055) and the Self-study Key Projects of State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University(2011DA 105287-ZD201401).

摘要/Abstract

摘要：

通过自主搭建的小尺寸实验平台，对比研究了当量比为1时不同氢气体积分数下，预混合成气在开口和闭口管道中的爆炸特性。研究结果表明：开口和闭口管道中合成气爆炸预混火焰传播结构具有明显差异；在闭口管道中，在所有的氢气体积分数下均观测到经典郁金香火焰结构，其中氢气体积分数为70%和90%时，能够观测到扭曲的郁金香火焰结构；在开口管道中，仅在氢气体积分数为10%、30%、50%时形成了经典郁金香火焰，且当氢气体积分数为10%、30%时，出现了扭曲郁金香火焰。开口和闭口管道中的火焰传播速度和爆炸压力峰值均随着氢气体积分数的增加而增大。当氢气体积分数较低（f < 50%）时，火焰传播速度和爆炸压力峰值随着氢气体积分数的增大而迅速增大，而在较高氢气体积分数（f≥ 50%）时，随着氢气体积分数的增加，火焰传播速度和爆炸压力峰值增加缓慢。

关键词: 合成气, 爆炸, 氢, 郁金香火焰, 扭曲郁金香火焰

Abstract:

The characteristics of synags/air mixture explosion in half-open and closed ducts with various hydrogen fractions at the stoichiometric were comparatively studied by a self-made laboratory experimental facility. The results show that there is a significant difference in the premixed flame propagation structure of syngas explosion in open and closed pipelines. In the closed duct, the classic tulip flame is observed from all hydrogen fractions, and the distorted tulip flame can be observed at the hydrogen fraction of 70% and 90%, respectively. In the half-open duct, the classic tulip flame forms at hydrogen fraction of 10%, 30%, and 50%,respectively, and the distorted tulip flame can be observed at the hydrogen fraction of 10% and 30%,respectively. Both in half-open and closed duct, the flame propagation speed and maximum pressure increases with the hydrogen fraction increase. When the hydrogen fraction is low (f < 50%), the flame propagation speed and maximum pressure increase rapidly as hydrogen fraction increases, and at higher hydrogen fraction (f ≥ 50%), the flame propagation speed and maximum pressure increase slowly with increasing hydrogen fraction.

Key words: syngas, explosions, hydrogen, tulip flame, distorted tulip flame

中图分类号:

TQ560.1

余明高, 栾鹏鹏, 郑凯, 阳旭峰, 万少杰, 段玉龙. 管道内预混合成气爆炸特性[J]. 化工学报, 2018, 69(10): 4486-4494.

YU Minggao, LUAN Pengpeng, ZHENG Kai, YANG Xufeng, WAN Shaojie, DUAN Yulong. Characteristics of premixed syngas/air explosion in horizontal duct[J]. CIESC Journal, 2018, 69(10): 4486-4494.

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管道内预混合成气爆炸特性

Characteristics of premixed syngas/air explosion in horizontal duct

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