CO_2与C_3F_7H抑制CH_4爆炸对比实验研究

Contrast Experiment Study on CO_2 and C_3F_7H in Inhibiting CH_4 Explosion

主动式喷气抑爆技术在抑制可燃气爆炸方面具有不可替代的优势,为进行主动式气体抑爆装置研发,运用20 L爆炸特性测试系统对CO_2和C_3F_7H 2种气体抑爆剂对CH4爆炸的抑制效果进行对比实验研究。研究结果表明:气体抑爆剂只有在和可燃空气混合气充分混合后,才能起到很好的抑爆效果;点火延迟时间为60 ms时,实验条件下CO_2和C_3F_7H的最低抑爆浓度分别为19.4%和17.4%;低于抑爆浓度的C_3F_7H能够促进CH4的燃烧爆炸,具有助燃作用;CO_2和C_3F_7H在抑制CH4爆炸方面各有优缺点。

Active air jet explosion suppression technology has irreplaceable advantages,and to research and develop active gas explosion suppression device,the suppression effect of CO_2 and C_3F_7H two kinds of gas anti explosion agent on CH4 explosion was carried out through contrast experiments study by the use of 20 L explosion characteristic testing system. Through the research,it is found that the gas explosion suppression agent can have very good explosion suppression effect only after fully intensive mixing with the flammable air mixture; under the condition of the ignition delay time of 60 ms,the minimum explosion suppression concentrations of CO_2 and C_3F_7H under the experimental conditions were 19. 4% and 17. 4%; C3F7 H concentration which is lower than the explosion suppression can promote the combustion and explosion of CH4 with the combustion effect; CO_2 and C_3F_7H have advantages and disadvantages in the inhibition of CH4 explosion respectively.