| 曾东建，朱震南，左子农，暴秀超，韩志强.稀释气体对天然气掺甲醇裂解气定容预混燃烧的影响[J].内燃机工程,2019,40(3):24-31. |
| Effects of Diluent Gases on Constant Volume Premixed Combustion of Mixture of Natural Gas and Dissociated Methanol |
| DOI：10.13949/j.cnki.nrjgc.2019.03.004 |
| Key Words:combustion pressure explosion index critical radius natural gas
dissociated methanol |
| Author Name | Affiliation | | ZENG Dongjian,ZHU Zhennan,ZUO Zinong,BAO Xiuchao,HAN Zhiqiang | 1.Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University,
Chengdu 610039, China
2.State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China |
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| Abstract:A mixture of H2 and CO in volume ratio of two to one was used to simulate dissociated methanol(DM). The combustion of pre-mixture of natural gas(60%) and DM(40%) with diluent gases N2 and CO2 was analyzed at the initial temperature of 343 K and the initial pressure of 0.3 MPa in terms of combustion pressure, the maximum combustion pressure, explosion index and critical radius. The comparison of the combustions of different pre mixtures of natural gas(100%, 60% and 20%), DM(0%, 40% and 80%) and air were experimentally conducted at the same initial temperature and pressure without diluent gases. The results show that DM has the function of accelerating pressure rise, promoting combustion, shortening combustion duration and advancing the formation of cellularity, but it will also reduce the maximum combustion pressure at and around the stoichiometric ratio, while the diluent gases have the opposite effects on combustion, such as decreasing the maximum combustion pressure and explosion index. In addition, CO2 is stronger than N2 in the suppression of combustion. |
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