TY  - JOUR
PY  - 2019//
TI  - Study on propagation characteristics of benzene vapor explosion and combustion flame
JO  - China safety science journal (CSSJ)
A1  - Gao, J.
A1  - Zhou, S.
A1  - Hu, S.
A1  - Wang, L.
A1  - Sun, X.
SP  - 51
EP  - 56
VL  - 29
IS  - 3
N2  - In order to explore the propagation characteristics of explosion and combustion flame of the benzene vapor, explosion and combustion experiments of different concentrations of benzene vapor were carried out in a self-designed 1m transparent explosion test pipeline. The high-speed camera was used to capture images of flame propagation of benzene vapor explosion in the pipeline. The flame images were compared and analyzed. The results show that a violent explosion reaction occurs when the low concentration of premixed benzene vapor-air gases are ignited, and the violent explosion reaction turns into a mild combustion reaction with the increase of concentration of benzene vapor in the premixed gases. The average flame propagation velocity increases with the rise of benzene vapor concentration, and reaches a maximum when the volume fraction of benzene vapor is 2. 8%. Then the velocity decreases with increasing benzene vapor concentration. The propagation process of explosion flame of low concentration benzene vapor can be divided into four stages: a rapid accelerating stage, a rapid decelerating stage, a slow accelerating stage and a slow decelerating stage. The propagation speed of high-concentration benzene vapor flame basically keeps constant, and the flame shape is closely related to flame propagation speed. © 2019 China Safety Science Journal<p /> <p>Language: zh</p>
LA  - zh
SN  - 1003-3033
UR  - http://dx.doi.org/10.16265/j.cnki.issn1003-3033.2019.03.009
ID  - ref1
ER  -