Feb. 2023

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Article Navigation> Transactions of Beijing institute of Technology> 2023> 43(2): 111-117

LIU Zhenyi, LI Jialu, LI Pengliang, LI Rui, LI Mingzhi, ZHAO Yao, REN Yuan. Study on the Explosion Suppression Effect of N2 and CO2 on CH4/C2H6/C3H8 Mixtures at High Temperature and High Pressure[J]. Transactions of Beijing institute of Technology, 2023, 43(2): 111-117. doi: 10.15918/j.tbit1001-0645.2022.048

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LIU Zhenyi, LI Jialu, LI Pengliang, LI Rui, LI Mingzhi, ZHAO Yao, REN Yuan. Study on the Explosion Suppression Effect of N₂and CO₂on CH₄/C₂H₆/C₃H₈Mixtures at High Temperature and High Pressure[J].Transactions of Beijing institute of Technology, 2023, 43(2): 111-117.doi:10.15918/j.tbit1001-0645.2022.048

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Study on the Explosion Suppression Effect of N₂and CO₂on CH₄/C₂H₆/C₃H₈Mixtures at High Temperature and High Pressure

doi:10.15918/j.tbit1001-0645.2022.048

1.
School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China
2.
SINO-PIPELINE International Company Limited, Beijing 102206, China

Received Date:2022-03-04
Accepted Date:2022-05-25

Abstract

Abstract

In order to improve the safety of oil production, the explosion suppression effect of N ₂and CO ₂under the condition of high temperature and high pressure in the wellbore needs to be studied. At present, there are few studies on the effect of different volume fractions of N ₂and CO ₂on the explosion characteristics of a fixed ratio of combustible gas to oxygen under high temperature and high pressure conditions. At 40 °C, the initial pressure of 0.5, 1.0 and 2.0 MPa, the time for CH ₄/C ₂H ₆/C ₃H ₈mixture to reach the maximum explosion overpressure, the maximum explosion overpressure and the deflagration index K _Gunder different N ₂and CO ₂volume fractions were studied and analyzed. The effects of different initial pressures and two types of inert gases on the explosion characteristic parameters were investigated. The test results show that the inerting mechanisms of N ₂and CO ₂are the same under different initial pressures; the inerting effect of CO ₂is better than that of N ₂and has the optimal point. Before this point, the inerting effect of CO ₂is gradually stronger than that of N ₂, and the chemical effect is dominant, after this point the chemical action reaches its maximum effect, so the inerting effect of CO ₂is still stronger than that of N ₂, but the advantage is gradually reduced.
- high temperature,
- high pressure,
- gas mixture,
- explosion suppression,
- explosion overpressure,
- deflagration index

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References (20)

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