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中文摘要：
对水力喷射空气旋流器（WSA）的中心排气管直径De和排气管插入深度S进行了设计优化研究,实验考察了不同De和S对WSA脱氨传质系数KLa和气相压降的影响,提出了综合评价传质过程效率的概念——单位压降传质效率pη,讨论了De和S的设计取值。研究表明,当De增大时,KLa和气相压降均随之降低,较小De的WSA具有较高的气液传质性能,但气相压降比较大,而KLa和气相压降均随S增大而增大。综合能效关系表明,随着De的增大Pη增大,随着S的增大Pη出现先增大后降低的趋势,WSA设计中De与WSA直径D之比De/D宜为0.42~0.53,S与WSA筒体长度H之比S/H适宜取值约为0.70。
英文摘要：
Water-sparged aerocyclone （WSA） is a new gas-liquid mass transfer equipment, which takes the advantage of coupling effect of air cyclone and liquid jet fields. In order to improve its mass transfer performance and establish design principles, the effect of diameter （De） and length （S） of the vortex finder in the WSA on its mass transfer performance and air pressure drop in air stripping of ammonia was investigated and optimized. A new concept, mass transfer efficiency per gas pressure drop,pη, and its calculation equation were put forward. The WSA with smallerDe and longerSshowed higher mass transfer efficiency than that with largerDe and shorter S in air stripping of ammonia. However, this kind of WSA had higher air pressure drop, which would consume more energy. Calculation ofηp, whichwas a comprehensive indicator considering energy consumption and mass transfer efficiency, showed that it increased with the increase ofDe/D and S/H,but it deceased a little whenS/H increased from 0.71 to 0.93. The optimalDe/D andS/Hshould be0.43 to 0.53 and 0.70, respectively. These results could be used as a guide for the design of WSA with good mass transfer performance.
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