| This study belongs to application fundamental researches of engineering of environmental disaster prevention, based on chemical industrial production. This paper has systematically studied the branch-chain explosive characteristics of single basic, bibasic and ploybasic mixture gas of H2, CO and CH4. The characters and creativity of this study are surnmarized as follows:(1) Basing on industrial production and solving safety problems: The concentration explosive limits, the minimum igniting energy, the maximum experimental safe gaps, and other explosive characteristics have been determined. These data is important to guide the design of explosion proof electric apparatus and fire protectors. It is also important to prevent branch-chain explosion of mixture gas.(2) Taking experimental study of ploybasic explosion as an emphasis, and associated with single basic explosion: By experiments it has gotten lots of explosive characteristic parameters of bibasic systems of H2, CO and CH4 and ploybasic systems of petroleum liquefied gas, water gas and catalytic cracking gas. The work fills a void of explosive characteristic parameters of ploybasic systems.(3) Running theoretical study with applied study: It probes into the effect of gas component on the concentration explosive limits and the damping effect on the branch-chain explosion. It studies the application of triangular phase diagram, and discusses the revision of explosion-proof safety guideline making use of explosion triangular phase diagram of H2 and CO system, H2 and CH4 system and catalytic cracking gas system. The paper introduces a new concept of 'key components' and uses it to revise explosion-proof safety guideline. This method is considered effective and simple.(4) Continuing innovation to study explosive morphology and waveforms: The paper has systematically studied the explosive waveform curves of single basic, bibasic and ploybasic...
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