Lower flammability limit of H2/CO/air mixtures with N2 and CO2 dilution at elevated temperatures

2020 ◽  
Vol 45 (16) ◽  
pp. 10164-10175 ◽  
Author(s):  
Rongxue Shang ◽  
Gang Li ◽  
Zi Wang ◽  
Zhuo Wang
Keyword(s):  
Elevated Temperatures ◽  
Flammability Limit ◽  
Lower Flammability Limit

A lower flammability limit prediction model of alkane-CO2 mixtures based on flame phenomenon simulation

2020 ◽  
Vol 63 (6) ◽  
pp. 1005-1017
Author(s):  
GeQun Shu ◽  
Xu Huo ◽  
Hua Tian ◽  
Rui Sun ◽  
JinWen Cai
Keyword(s):  
Prediction Model ◽  
Flammability Limit ◽  
Lower Flammability Limit

scholarly journals Study on the Pressure Dependence of Boiling Point, Flashpoint, and Lower Flammability Limit at Low Ambient Pressure

2015 ◽  
Vol 54 (6) ◽  
pp. 1899-1907 ◽  
Author(s):  
Chao Ding ◽  
Yaping He ◽  
Jiusheng Yin ◽  
Wei Yao ◽  
Dechuang Zhou ◽  
...  
Keyword(s):  
Pressure Dependence ◽  
Boiling Point ◽  
Ambient Pressure ◽  
Flammability Limit ◽  
Lower Flammability Limit

Lower Flammability Limit of Difluoromethane and Percolation Theory

2004 ◽  
Vol 25 (4) ◽  
pp. 1085-1095 ◽  
Author(s):  
I. Kul ◽  
D. L. Gnann ◽  
A. L. Beyerlein ◽  
D. D. DesMarteau
Keyword(s):  
Percolation Theory ◽  
Flammability Limit ◽  
Lower Flammability Limit

The Explosion Severity of Biogas(CH4-CO2)/Air Mixtures in a Closed Vessel

2019 ◽  
Vol 964 ◽  
pp. 33-39
Author(s):  
Nur Aqidah Muhammad Harinder Khan ◽  
Siti Zubaidah Sulaiman ◽  
Izirwan Izhab ◽  
Siti Kholijah Abdul Mudalip ◽  
Rohaida Che Man ◽  
...  
Keyword(s):  
Maximum Rate ◽  
Equivalence Ratio ◽  
Pressure Rise ◽  
Flammability Limit ◽  
Flammability Limits ◽  
Spherical Vessel ◽  
Suppression Effect ◽  
Explosion Overpressure ◽  
Deflagration Index ◽  
Lower Flammability Limit

Biogas which consists of methane (CH4) and carbon dioxide (CO2) could explode when diluted to a certain degree with air in the presence of ignition source. The maximum explosion overpressure (Pmax), the maximum rate of pressure rise (dP/dt)max, flammability limits, and deflagration index are the most important explosion severities parameters to characterize the risk of explosion. In this research paper, the effect of equivalence ratio (ER) of biogas/air mixtures and the effect of CO2 concentrations presence in biogas were studied in a 20 L spherical vessel. The values of Pmax and (dP/dt)max of biogas/air mixtures were more severe at ER 1.2. At various CO2 content, Pmax and (dP/dt)max of biogas/air mixtures were the least affected at 45% vol/vol of CO2. On the other hand, deflagration index (KG) of biogas/air mixtures trend was the most severe at 35% vol/vol of CO2 content despite the lowest Pmax and (dP/dt)max at 45% vol/vol of CO2 content. The lowest values in Pmax and (dP/dt)max were due to the diffusivity properties of CH4 that had surpassed the CO2 suppression effect. Furthermore, the presence of CO2 in biogas/air mixtures had increased the upper flammability limit and lower flammability limit of biogas.

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