The effect of $C O_{2}$ on the lower flammability limit of $C_{3} H_{8}$ in $O_{2} / C O_{2}$ atmosphere at high temperature and pressure

Hao Wei, Xianzhong Hu, Bingrong Huang

September, 2021

Abstract

In order to provide a reference range for the safe application of $C_{3} H_{8}$ under $O_{2} / C O_{2}$ atmosphere, the lower flammability limit of $C_{3} H_{8} / O_{2} / C O_{2}$ was studied by calculations. A prediction model based on the limited laminar flame speed principle was used to calculate the lower flammability limit of $C_{3} H_{8} / O_{2} / C O_{2}$ mixture. The effects of elevated temperature and pressure on the lower flammability limit of $C_{3} H_{8}$ were investigated. How the high $C O_{2}$ concentration changes the lower flammability limit was also discussed. Results show that the lower flammability limit of $C_{3} H_{8}$ decreased linearly with the increase of preheating temperatures. The lower flammability limit increased in a logarithmic relation with the increase of pressure. The lower flammability limit increased slightly with increasing $C O_{2}$ concentration.

Type

Journal article

Publication

In Fuel

The effect of CO2 on the lower flammability limit of C3H8 in O2/CO2 atmosphere at high temperature and pressure

Abstract

Hao Wei

Computation, Modelling, and Reconstruction

The effect of $C O_{2}$ on the lower flammability limit of $C_{3} H_{8}$ in $O_{2} / C O_{2}$ atmosphere at high temperature and pressure