文献类型：期刊文献

英文题名：Explosion characteristics of methane-ethane mixtures in air

作者：Shen, Xiaobo[1];Zhang, Bo[2];Zhang, Xiaoliang[3];Xiu, Guangli[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Risk Assessment &, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai 200237, Peoples R China;[3]Shanghai Inst Technol, Coll Urban Construct & Safety Engn, Shanghai 201418, Peoples R China

年份：2017

卷号：45

起止页码：102

外文期刊名：JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES

收录：;EI(收录号：20165103133065);WOS:【SCI-EXPANDED(收录号:WOS:000393534000009)】；

基金：This work is funded by the National Natural Science Foundation of China (Grant No.51604121), the Fundamental Research Funds for the Central Universities (No.22A201514059), the China Postdoctoral Science Foundation (No. 2015M581550), State Key Laboratory of Fire Science (No. HZ2015-KF12) and Shanghai Sailing Program (No. 16YF1402000). The authors gratefully thank these supports.

语种：英文

外文关键词：Methane; Ethane; Fuel mixture; Explosion pressure; Flammability limit

摘要：Experiments were systematically performed in a standard 20-L spherical vessel to measure the explosion parameters of different methane-ethane/air mixtures. Data were scrutinized and carefully compared to elucidate the explosion characteristics. Firstly, it turns out that ethane has higher maximum explosion pressure, P-max and maximum rate of pressure rise, (dP/dt)(max) than methane in air against the equivalence ratio. The Upper Flammability Limit, UFL (in equivalence ratio) of ethane in air is also larger; while the Lower Flammability Limits, Ins (in equivalence ratio) of both gases in air are almost the same. Then for methane-ethane mixtures, when the ethane content increases, the value of P-max versus equivalence ratio and the UFL both rise as well; while the LFL changes little if taking the uncertainty of measurement into account. Similarly, (dP/dr)(max) increases together with growing ethane content in the fuel mixture at the same equivalence ratio, especially at the fuel-rich side; but at the fuel-lean side the discrepancies are relatively smaller. In general, due to the higher reactivity, exothermicity and laminar flame speed of ethane, it can remarkably raise the explosion pressure, pressure rise rate and flammable range, and ultimately enhance the explosion risk and severity of fuel blend system. (C) 2016 Elsevier Ltd. All rights reserved.