超细水雾协同甲烷氧化菌降解与抑制甲烷爆炸的实验研究

发布时间：2018-05-16 20:00

本文选题：甲烷 + 甲烷氧化菌　；参考：《化工学报》2017年11期

【摘要】：搭建了半封闭的实验管道平台,开展了不同喷雾量的超细水雾降解与抑制甲烷爆炸的实验研究,分析了甲烷氧化菌的形态,抑爆过程中火焰变化,管道内部最大爆炸超压,平均升压速率的变化规律。结果表明:含甲烷氧化菌-无机盐的超细水雾能够有效降解甲烷,喷雾量越大,降解甲烷的速率越快,当甲烷的体积分数为9.5%,在喷雾量达到0.7 ml,立即引爆后的火焰亮度和火焰传播速率明显高于降解时间为360 min且二次喷雾量为0.7 ml的工况。喷雾量从0.7 ml增加至4.9 ml,无论近端还是远端最大爆炸超压均呈现下降的趋势,对于近端的平均升压速率也呈现下降的趋势。以无机盐为培养基的甲烷氧化菌和超细水雾降解与抑制甲烷爆炸具有协同作用,能够在一定时间内有效降解甲烷。
[Abstract]:A semi-closed experimental pipeline platform was set up to study the degradation of superfine water mist and the suppression of methane explosion with different spray amounts. The morphology of methane-oxidizing bacteria, the flame change during explosion suppression, and the maximum explosion overpressure in the pipeline were analyzed. The law of variation of average boost rate. The results showed that the superfine water mist containing methanoxide-inorganic salt could effectively degrade methane, and the higher the amount of spray was, the faster the rate of methane degradation was. When the volume fraction of methane is 9.5 ml, the flame brightness and flame propagation rate after immediate detonation are obviously higher than that of the degradation time of 360 min and the secondary spray rate of 0.7 ml. When the spray volume increased from 0.7 ml to 4.9 ml, the maximum explosion overpressure at the proximal end and the distal end showed a downward trend, and the average pressure rising rate for the proximal end also showed a downward trend. The degradation of methane oxidizing bacteria and ultrafine water mist on inorganic salt medium has synergistic effect on the inhibition of methane explosion and can effectively degrade methane in a certain period of time.
【作者单位】：常州大学石油工程学院;江苏省油气储运重点实验室;常州大学环境与安全工程学院;
【基金】：国家自然科学基金项目(51704041,51574044) 江苏自然科学基金项目(BK20140264,BK20150269) 安全生产重特大事故防治关键技术科技项目(jiangsu-0015-2017AQ) 江苏省油气储运重点实验室项目(SCZ1211200004/004) 常州大学校基金项目(ZMF14020055) 江苏高校自然科学研究面上项目(17KJD620001)~~
【分类号】：TD712.7

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