基于载铜固体吸附特性的CO消除试验

Experiment on CO elimination based on copper-loaded solid adsorption characteristics

一氧化碳(CO)是煤炭开采过程中主要危害气体之一,为了降低在工作面上隅角的CO浓度,开展了碳一工业中活性炭(AC)与分子筛(NaY)吸附剂对CO吸附效果的研究。通过BET比表面积测试法和X射线衍射法分别对负载氯化亚铜的分子筛和活性炭的比表面积和孔结构、物相分析进行表征,运用自行搭建的试验台对宏观吸附效果进行测试。试验结果表明,分子筛和活性炭负载氯化亚铜后,总比表面积和微孔比表面积都减小,这会使两种吸附剂的微孔数量增多,吸附能力变强,相比活性炭,无论是否负载氯化亚铜,分子筛更有利于吸附。在静态试验中,负载氯化亚铜的分子筛消除CO的效果最好,消除率达到61.17%。通过动态试验发现风速及吸附剂质量对吸附率均有一定影响,其中风速为1.0 m/s、吸附剂质量为600 g时,CO的消除效果最优。

Carbon monoxide(CO)is one of the main harmful gases in the process of coal mining.In order to reduce the CO concentration in the upper corner of working face,the effect of activated carbon(AC)and molecular sieve(NaY)adsorbents on CO adsorption was studied.By using BET method and X-ray diffraction method,the specific surface area,pore structure and phase analysis of molecular sieve and activated carbon loaded with cuprous chloride were characterized respectively,and the macro adsorption effect was experimented by self-made test bench.The results show that the total specific surface area and micropore specific surface area of molecular sieve and activated carbon loaded with cuprous chloride are reduced,which will increase the number of micropores and enhance the adsorption capacity of the two adsorbents.Compared with activated carbon,molecular sieve is more conducive to adsorption,whether loaded with cuprous chloride or not.In the static test,the molecular sieve loaded with cuprous chloride has the best effect in eliminating CO,and the elimination rate reaches 61.17%.Dynamic test shows that the wind speed and adsorbent mass have certain influence on the adsorption rate,and when the wind speed is 1 m/s and the adsorbent mass is 600 g,the CO elimination effect is the best.