石化装置工业尺度管道爆轰传播实验研究

鲍磊; 王鹏; 党茜; 李厚达; 邝辰; 于安峰

doi:10.11883/bzycj-2020-0295

石化装置工业尺度管道爆轰传播实验研究

doi: 10.11883/bzycj-2020-0295

鲍磊^{1, 2,},
王鹏^{1, 2},
党茜³,
李厚达^{1, 2},
邝辰^{1, 2},
于安峰^{1, 2, ,}

1.
中国石油化工股份有限公司青岛安全工程研究院，山东青岛 266101
2.
中国石油化工股份有限公司化学品安全控制国家重点实验室，山东青岛 266101
3.
西南石油大学石油与天然气工程学院，四川成都 610500

详细信息

作者简介:
鲍　磊（1987－　），男，硕士，工程师，baol.qday@sinopec.com

通讯作者:
于安峰（1982－　），男，博士，教授级高级工程师，yuaf.qday@sinopec.com

中图分类号: O381
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- 文章访问数: 444
- HTML全文浏览量: 197
- PDF下载量: 63
- 被引次数: 0
出版历程
- 收稿日期: 2020-08-28
- 修回日期: 2020-12-24
- 网络出版日期: 2021-08-23
- 刊出日期: 2021-09-14

Experimental study on detonation propagation in industrial scale pipelines used in petrochemical plants

BAO Lei^{1, 2
,},
WANG Peng,^{1, 2},
DANG Qian³,
LI Houda^{1, 2},
KUANG Chen^{1, 2},
YU Anfeng^{1, 2
, ,}

1.
Research Institute of Safety Engineering, SINOPEC, Qingdao 266101, Shandong, China
2.
State Key Laboratory of Safety and Control for Chemicals, SINOPEC, Qingdao 266101, Shandong, China
3.
Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, Sichuan, China

摘要

摘要: 针对石化装置罐区大口径、长距离管道内火焰传播缺乏系统研究的问题，设计搭建了DN50～DN500工业尺度管道火焰传播实验装置，并开展了丙烷/空气、乙烯/空气等可燃气体在不同管径下的实验研究。实验结果表明：可燃气体积分数对火焰传播及爆轰有一定影响，当接近化学计量浓度时，爆轰加速距离更短，更易形成稳态爆轰，而当可燃气混合气为贫燃或富燃状况时，爆轰加速距离则会增长；火焰爆轰传播速度、爆轰压力与管道管径基本无关，受可燃气种类影响更大；对应体积分数为6.6%的乙烯/空气和体积分数为4.2%的丙烷/空气混合气体，爆轰压力分别是初始压力的15.17和14.47倍，DN150以下管径内的爆轰压力远高于ISO16852标准给出的参考值。罐区连通管道阻火器选型安装时，应结合安装位置选用合适的阻火器。
- 爆轰 /
- 火焰传播 /
- 工业尺度 /
- 管道
Abstract: Based on the lack of systematic research on flame propagation in large-diameter and long-distance pipelines in the tank area of petrochemical plants, an experimental device for flame propagation in DN50-DN500 industrial-scale pipelines was designed and built. In this paper, effects of concentration of gas mixture for propagation characteristics of steady gaseous detonation waves in ethylene-air mixtures with DN50 pipeline were studied experimentally. The volume concentration of gas mixture was 5.6%, 5.93%, 6.6%, 7.15%, 8.0% ethylene in air. Homogeneous C₂H₄/air (6.6%) and C₃H₈/air (4.2%) mixtures were used with 9 kinds of pipelines which were from DN50 to DN500 to study the effects of pipeline diameter for propagation characteristics of steady gaseous detonation. The experimental results show that the concentration of combustible gas has an effect on flame propagation and detonation. The detonation runup distance is short and steady detonation is more likely to be formed when it is close to chemical equivalent concentration, when the combustible mixture is poorer or richer, the steady detonation will need more runup distance. The detonation flame speed and pressure are more affected by the type of combustible gas instead of pipe diameter. The detonation pressure of the mixture of 6.6% C₂H₄/air and the mixture of 4.2% C₃H₈/air is 15.17 and 14.47 times of the initial pressure, respectively, which is different from the reference value given by the ISO16852 standard where the ratio p_m/p₀ (the average value of the detonation pressure to initial pressure) increases with pipe diameter. The detonation pressure of pipeline below DN150 is far higher than the reference value which is 10 and 12. It’s suggested that in the design of pipelines and selection and installation of flame arresters for connecting pipelines in the tank areas, detonation pressure requires careful consideration and appropriate arresters should be selected in combination with the installation position.
- gaseous detonation /
- flame propagation /
- industrial scale /
- pipeline

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图 1 实验系统组成

Figure 1. Schematic representation of the experimental apparatus

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图 2 不同C₂H₄体积分数下C₂H₄/空气爆轰传播压力

Figure 2. Detonation pressure of different C₂H₄ concentrations in air

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图 3 不同C₂H₄体积分数下C₂H₄/空气混合物爆轰传播速度

Figure 3. Detonation flame speed of different C₂H₄ concentrations in air

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图 4 不同管径下管道火焰爆轰速度

Figure 4. Detonation speed of different pipe diameters

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图 5 ISO16852标准关于爆轰速度的位置设置

Figure 5. Location settings of detonation speed in ISO16852

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图 6 爆轰火焰无量纲压力p_m/p₀值与管径关系（6.6% C₂H₄/空气）

Figure 6. Relationship between p_m/p₀ and pipe diameters (6.6% C₂H₄/air)

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图 7 不同管径下火焰 ${\delta _{\max }}$ 值（6.6% C₂H₄/空气）

Figure 7. ${\delta _{\max }}$ in different pipes (6.6% C₂H₄/air)

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图 8 50 mm管道不同位置处火焰速度（6.6% C₂H₄/空气）

Figure 8. Flame speed at different positions in 50 mm pipeline (6.6% C₂H₄/air)

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图 9 管径与爆轰火焰p_m/p₀关系（4.2%C₃H₈/空气）

Figure 9. Relationship between p_m/p₀ and pipe specifications (4.2%C₃H₈/Air)

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图 10 不同管径下火焰 ${\delta _{\max }}$ 值（4.2% C₃H₈/空气）

Figure 10. ${\delta _{\max }}$ in different pipes (4.2% C₃H₈/Air)

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表 1 各实验管道长度

Table 1. Length of each experimental pipeline

管径/mm 长度/m 管径/mm 长度/m

50 15 250 55
80 24 300 60
100 25 400 84
150 36 500 110
200 48

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表 2 50 mm管道实验装置火焰速度传感器布置位置

Table 2. Location of flame speed sensors in 50-mm-pipeline experimental apparatus

传感器位置/D 传感器位置/D 传感器位置/D

v1 144 v5 168 v9 208
v2 148 v6 176 v10 216
v3 152 v7 184 v11 224
v4 156 v8 192 v12 232

下载: 导出CSV

表 3 50 mm管道实验装置火焰压力传感器布置位置

Table 3. Location of flame pressure sensors in 50-mm-pipeline experimental apparatus

传感器位置/D 传感器位置/D

p1 146 p5 180
p2 150 p6 188
p3 154 p7 212
p4 172 p8 228

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表 4 ISO16852标准的 $p_{\rm m}/p_0$ 参考值

Table 4. $p_{\rm m}/p_0$ given by ISO16852

介质 D≤80 mm 80 mm＜D
≤150 mm 150 mm＜D
＜1 000 mm D≥1000 mm

C₃H₈/空气 10±2 12±2.4 14±2.8 16±3.2
C₂H₄/空气 10±2 12±2.4 14±2.8 16±3.2

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参考文献(17)

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文章访问数: 444
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管径/mm	长度/m	管径/mm	长度/m
50	15	250	55
80	24	300	60
100	25	400	84
150	36	500	110
200	48

传感器	位置/D	传感器	位置/D	传感器	位置/D
v1	144	v5	168	v9	208
v2	148	v6	176	v10	216
v3	152	v7	184	v11	224
v4	156	v8	192	v12	232

介质	D≤80 mm	80 mm＜D ≤150 mm	150 mm＜D ＜1 000 mm	D≥1000 mm
C₃H₈/空气	10±2	12±2.4	14±2.8	16±3.2
C₂H₄/空气	10±2	12±2.4	14±2.8	16±3.2

传感器	位置/D	传感器	位置/D
p1	146	p5	180
p2	150	p6	188
p3	154	p7	212
p4	172	p8	228

石化装置工业尺度管道爆轰传播实验研究

doi: 10.11883/bzycj-2020-0295

作者简介: 鲍 磊（1987－ ），男，硕士，工程师，baol.qday@sinopec.com

通讯作者: 于安峰（1982－ ），男，博士，教授级高级工程师，yuaf.qday@sinopec.com

计量

出版历程

Experimental study on detonation propagation in industrial scale pipelines used in petrochemical plants

计量

出版历程

目录

作者简介:
鲍　磊（1987－　），男，硕士，工程师，baol.qday@sinopec.com

通讯作者:
于安峰（1982－　），男，博士，教授级高级工程师，yuaf.qday@sinopec.com