Numerical simulation on prediction model of risk range of typical gas release through small holes

• Published in: Méitàn kēxué jìshù Vol. 51; no. 3; pp. 281 - 290
• Main Authors: ZHAO Kaigong, ZHANG Xiaolei, LI Zhangming, CHEN Gang, GAI Yongling
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Coal Science and Technology 01.03.2023
• Subjects: cfd; chemical synthesis; gas leakage; predictive models; scope of danger
• ISSN: 0253-2336
• DOI: 10.13199/j.cnki.cst.2022-1948

In order to relieve the shortage of petroleum resources, it is a reasonable way to develop synthetic oil industry as a supplement of petroleum resources. In chemical synthesis, most reactions need to be carried out in pressurized environment. Leakage is one of the most common accidents, and the research of gas leakage in pressurizing device and pipeline is still to be improved. Therefore, by CFD numerical simulation method, this paper takes common gases (H2, CO, CH4) in chemical synthesis as the research object, and uses the range of dangerous concentration after gas leakage as the danger range of gas leakage. Fluent software is used to simulate gas leakage and diffusion under different working conditions. In order to study the gas leakage diffusion law and leakage danger range under different gas, different leakage pressure, different leakage temperature and different leakage port diameter, and build the prediction model of leakage danger range. The results show that the danger range of gas leakage increases