矿业安全与环保
礦業安全與環保
광업안전여배보
MINING SAFETY & ENVIRONMENTAL PROTECTION
2014年
4期
1-3
,共3页
乏风瓦斯%贵金属催化剂%催化燃烧%甲烷转化率
乏風瓦斯%貴金屬催化劑%催化燃燒%甲烷轉化率
핍풍와사%귀금속최화제%최화연소%갑완전화솔
ventilation air methane%precious metal catalyst%catalytic combustion%conversion rate of methane
制备了含有稀土元素涂层的铂、钯贵金属堇青石载体催化剂，用低浓度甲烷对该催化剂进行催化燃烧实验，研究了不同反应温度、不同甲烷体积分数、不同反应空速下甲烷的转化率。实验结果表明：在反应空速为30000 h-1条件下，温度为450益时，甲烷转化率为68%左右，达到催化剂的起燃温度；在700益时，甲烷转化率达到100%。甲烷体积分数为0.2%~1.5%时，甲烷转化率都超过了99%，该催化剂适用于乏风瓦斯催化燃烧。
製備瞭含有稀土元素塗層的鉑、鈀貴金屬堇青石載體催化劑，用低濃度甲烷對該催化劑進行催化燃燒實驗，研究瞭不同反應溫度、不同甲烷體積分數、不同反應空速下甲烷的轉化率。實驗結果錶明：在反應空速為30000 h-1條件下，溫度為450益時，甲烷轉化率為68%左右，達到催化劑的起燃溫度；在700益時，甲烷轉化率達到100%。甲烷體積分數為0.2%~1.5%時，甲烷轉化率都超過瞭99%，該催化劑適用于乏風瓦斯催化燃燒。
제비료함유희토원소도층적박、파귀금속근청석재체최화제，용저농도갑완대해최화제진행최화연소실험，연구료불동반응온도、불동갑완체적분수、불동반응공속하갑완적전화솔。실험결과표명：재반응공속위30000 h-1조건하，온도위450익시，갑완전화솔위68%좌우，체도최화제적기연온도；재700익시，갑완전화솔체도100%。갑완체적분수위0.2%~1.5%시，갑완전화솔도초과료99%，해최화제괄용우핍풍와사최화연소。
A platinum, palladium and cordierite carrier catalyst with rare earth element coating was prepared, catalytic combustion experiment of this catalyst was carried out with low-concentration methane, and study was made on the conversion rate of methane under different reaction temperature, different volume fraction of methane and different reaction space velocity. The experimental results indicated that under the conditions of the reaction space velocity of 30 000 h-1 and reaction temperature of 450 ℃, the conversion rate of methane was about 68%, which reached the light-off temperature of the catalyst; the conversion rate methane reached 100% at 700 ℃. When the methane volume fraction was 0. 2% ~1. 5%, the conversion rate of methane was over 99%. This catalyst is suitable for catalytic combustion of ventilation air methane.
