液膜传质系数是根据双膜理论,对于气液相传质体系,在稳定条件下,单独根据液膜的推动力和阻力计算传质速率时所用的系数。 液膜传质速率方程:NA= kL(Ci-C) 式中:NA为组分A穿过液膜的吸收速率;Ci为在气液相界处液相中组分A的平衡浓度;C为液相主体中组分A的平均浓度;系数kL称为液膜传质系数。当液膜吸收推动力以比摩尔分数差表示时,液膜传质系数kX表示。kL与溶解度系数H乘积的倒数表明液膜传质阻力的大小,它受温度、浓度、液膜厚度及吸收质在液膜中分子扩散系数等因素影响。
... gas-film mass transfer coefficient 气膜传质系数 liquid-film coefficient of mass transfer 液膜传质系数 boiling heat-transfer film coefficient 沸腾传热膜系数 ...
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通过考察体积传质系数,确定了纤维液膜萃取分离器的最佳填充密度和最佳流量比。
By analyzing the volume mass-transfer coefficient, the optimal operating flow-ratio and packed density were obtained.
用标准浊度液测定了浊度对氰化物传质系数的影响,探讨了膜污染的几种清洗方法。
The influence of turbidity on the mass transfer coefficient of cyanide is determined using standard turbidity solution. Several methods for cleaning the fouled membrane are explored.
建立了描述连续逆流超临界流体喷淋萃取塔的流体力学关联式,根据双膜理论,建立了用于计算液相总体积传质系数的质量传递模型。
The study on hydrodynamics and mass transfer performance is carried out in a 25 mm diameter continuous countercurrent supercritical fluid extraction spray column.
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