为提升水合物法瓦斯气体中CH4的回收效果,采用可视化鼓泡式瓦斯水合分离实验装置,开展10、15、20 mL/min三种鼓泡速率下CH4体积分数分别为60%的瓦斯混合气样G1、70%的瓦斯混合气样G2的水合分离实验,获得水合分离速率、回收率等目标参数.在鼓泡速率由10 mL/min提升至20 mL/min的过程中,气样G1、G2水合分离速率分别由17.8、26.2 cm3/min递增至29.1和34.6 cm3/min;水合分离结束后CH4回收率分别由4.01%、3.51%递增至5.21%、4.01%;分离因子分别由1.63、1.33递增至2.24、1.91.结果表明:提升鼓泡速率可以加快瓦斯水合分离进程,加强水合物法回收瓦斯中CH4能力,提高回收气中CH4净化程度.%This paper is devoted to improving the effect of recovery CH4 from methane gas using hydrate way. The research centers around gas hydration separation experiments on two gas samples(G1:φ(CH4)=60%, G2:φ(CH4)=70%), by applying the visualized bubbling gas hydration separation experiment device and using three kinds of bubbling rates(10、15、20 mL/min), and provides some target parameters such as hydration separation rate and recovery rate. The bubbling rate increase from 10 mL/min to 20 mL/min is accompanied by a respective increase from 17.8 and 26.2 cm3/min to 29.1 and 34.6 cm3/min in the separation rates of G1 and G2; and hydration separation is followed by a respective increase from 4.01% and 3.51% to 5.21% and 4.01%, in the recoveries of CH4 and a respective increase from 1.63 and 1.33 to 2.24 and 1.91 in the separation factor. The bubbling rate has a demonstrated ability to accelerate the process of gas hydration separation, strengthen the hydrate method able to recover the CH4 in the gas, and improve the purifying degree of CH4 in the recovered gas.
展开▼
