放空气体在大气中的稀释速度和可燃气体浓度边界也与放空立管直径和高度有关。
The thinning velocity of blowdown acs and the boundary of flammable gas concentration are also relative to those.
可燃气体的浓度、组分及热值变动较之地面气化炉气化差别较大；
The density of flammable gas, components and variety of heat value are very different from the gasification on the ground gasification furnace;
结果表明，在分析可燃气体泄漏的危险性时，不仅应分析环境空间可燃气体的爆炸浓度范围，而且也要注意存在局部着火的可能性。
The results indicate that when flammable gas risk is analyzed, both the flammable gas explosion scopes in the environment space and local fire possibility should be paid attention to.
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