CAJ | 학술논문

研究了以焦炉煤气为原料在BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)(BCFNO)透氧膜反应器中制合成气.实验结果表明,BCFNO膜反应器的自催化性能差.加入催化剂后,膜反应器的重整性能得到明显提高,在875℃,焦炉煤气中甲烷转化率为87.0%,产物中氢气和一氧化碳选择性分别为78.3%、105.6%,透氧量达到15.8ml/(cm~2·min).焦炉煤气中的甲烷在膜反应器中反应路径为首先焦炉煤气中的氢气与膜片透过去的氧反应生成水,然后甲烷再与水重整生成氢气和一氧化碳.实验过程中,透氧膜没有出现破裂,BCFNO透氧膜反应器在富氢的焦炉煤气下显示出很好的稳定性.
연구료이초로매기위원료재BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)(BCFNO)투양막반응기중제합성기.실험결과표명,BCFNO막반응기적자최화성능차.가입최화제후,막반응기적중정성능득도명현제고,재875℃,초로매기중갑완전화솔위87.0%,산물중경기화일양화탄선택성분별위78.3%、105.6%,투양량체도15.8ml/(cm~2·min).초로매기중적갑완재막반응기중반응로경위수선초로매기중적경기여막편투과거적양반응생성수,연후갑완재여수중정생성경기화일양화탄.실험과정중,투양막몰유출현파렬,BCFNO투양막반응기재부경적초로매기하현시출흔호적은정성.
Syngas from coke oven gas was investigated in an oxygen-permeable membrane BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ) (BCFNO) reactor.It was found that the membrane itself has poor catalytic activity methane.After the catalyst was packed on the membrane surface,both methane conversion and oxygen permeation flux were greatly improved by the synergetic effect between the membrane and catalyst,at 875℃,87.0% of methane conversion,78.3% of H_2 selectivity,105.6% of CO selectivity and as high as 15.8ml/(cm~2·min) of oxygen permeation flux were obtained.The react pathway of CH_4 in the coke oven gas in the membrane reactor is as follows: firstly,H_2 in the coke oven gas reacts with the O_2,and generate H_2O,then CH_4 reforms with the H_2O to produce H_2 and CO.The membrane reactor exhibited not only good activity but also chemical stability resistance to hydrogen-enriched COG atmosphere.