煤基合成气(CO+H_2)合成二甲醚——产品分离中传质的研究

DME Synthesized from Coal-based Syngas ——The Study of Mass-transfer in DME Absorption

在溶剂法回收二甲醚过程中 ,考察了吸收压力、气液比 G/L、空塔线速、进塔气体中的 DME浓度以及吸收温度等因素对 DME体积传质系数 Kyα的影响。结果表明 :随着吸收压力、空塔线速、进塔气体中 DME浓度的增加 ,Kyα值上升 ;随吸收温度和 G/L的升高 。

During the DME absorption by means of solvent,the effect of operation conditions including pressure,temperature,linear velocity of empty column,DME content of the inlet gas and rate of gas to liquid(G/L) on DME volumetric gas side mass transfer coefficient(Kya) were investigated.The results indicated that the Kya value increased with the increasing of pressure,linear velocity of empty column,DME content of the inlet gas;the Kya value decreased with increasing of temperature and G/L.