CAJ | 학술논문

水力喷射空气旋流器（water-sparged aerocyclone，WSA）是一种利用液体射流在气体旋流场中雾化强化气液传质的新型传质设备，可广泛用于废水、废气处理等环境工程中。为了改进水力喷射空气旋流器结构，提高其气液传质性能，本文通过废水氨氮吹脱实验研究了进气口轴向位置以及底部挡板的设置对气液传质性能的影响。实验结果表明，进气位置与底部挡板对水力喷射空气旋流器的气液传质性能存在影响。在相同工作条件下，气相进口沿轴向下移对WSA内气液传质性能作用较小，但能够使其气相压降降低约为10%。在WSA主筒体底部液封区域设置挡板，能够强化WSA底部气液两相的混合，进而提高低液相循环流量下WSA内的气液传质性能，且随进气速度的增加，其效果越显著，研究结果可为设计传质性能良好的WSA提供设计依据。
수력분사공기선류기（water-sparged aerocyclone，WSA）시일충이용액체사류재기체선류장중무화강화기액전질적신형전질설비，가엄범용우폐수、폐기처리등배경공정중。위료개진수력분사공기선류기결구，제고기기액전질성능，본문통과폐수안담취탈실험연구료진기구축향위치이급저부당판적설치대기액전질성능적영향。실험결과표명，진기위치여저부당판대수력분사공기선류기적기액전질성능존재영향。재상동공작조건하，기상진구연축향하이대WSA내기액전질성능작용교소，단능구사기기상압강강저약위10%。재WSA주통체저부액봉구역설치당판，능구강화WSA저부기액량상적혼합，진이제고저액상순배류량하WSA내적기액전질성능，차수진기속도적증가，기효과월현저，연구결과가위설계전질성능량호적WSA제공설계의거。
Water-sparged aerocyclone(WSA) is a new type of gas-liquid mass transfer equipment with a coupling field of liquid jet with gas cyclone,which can be widely used in wastewater treatment process. To further optimize the structure design of WSA,the effect of bottom baffles and air inlet position on mass transfer performance of WSA was comparatively studied by air stripping of ammonia from wastewater. The results indicated that the separation space configuration of a WSA affects its mass transfer performances. Under the same conditions,the axial air inlet position has no effect on mass transfer performance,but moving air inlet position downward could reduce the gas pressure drop in WSA by about 10%,which was probably caused by abating the friction loss between the gas cyclone and the wall. In case of high air inlet velocity and low liquid flow rate,the bottom baffles in the WSA could intensify the mixing effect between gas and liquid phases,thereby improving the mass transfer performance,and the effect is more pronounced with the increase of air inlet velocity. The results could be used as a guide for the design of WSA with good mass transfer performance.