CAJ | 학술논문

结合Danckwerts的界面更新模型,初步分析了纳米颗粒强化氨水鼓泡吸收过程的机理.改变不同的氨气流量和基液氨水浓度,进行了Al_2O_3纳米颗粒对氨水鼓泡吸收性能的强化实验.实验表明:Al_2O_3纳米颗粒对氨水鼓泡吸收性能具有强化效果:在实验条件下,加纳米颗粒的吸收效果最大可以达到没有加纳米颗粒的1.22倍;在保持其它条件一定时,随着氨气流量增加,溶液吸收率增加,但有效吸收率出现有增大也有减小的不规律特征,而随着基液氨水浓度的增加,有效吸收率增加比较明显.为研制小型氨水吸收式制冷机的鼓泡式吸收器提供参考.
결합Danckwerts적계면경신모형,초보분석료납미과립강화안수고포흡수과정적궤리.개변불동적안기류량화기액안수농도,진행료Al_2O_3납미과립대안수고포흡수성능적강화실험.실험표명:Al_2O_3납미과립대안수고포흡수성능구유강화효과:재실험조건하,가납미과립적흡수효과최대가이체도몰유가납미과립적1.22배;재보지기타조건일정시,수착안기류량증가,용액흡수솔증가,단유효흡수솔출현유증대야유감소적불규률특정,이수착기액안수농도적증가,유효흡수솔증가비교명현.위연제소형안수흡수식제랭궤적고포식흡수기제공삼고.
From the Danckwerts theoretical surface renewal model of mass transfer,an approach using nanoparticles to enhance ammonia bubble absorption process was examined in this study.In our experiment,the ammonia vapor flow flux and the concentration ratio of bulk ammonia solution were adjusted and their effects on ammonia bubble absorption were explored.The experimental results show that the absorption ratio was significantly increased by adding Al_2O_3 nanoparticles in the bulk solution,and the effective absorption ratio could reach 1.22 times that without Al_2O_3 nanoparticles in the bulk solution.In addition,the increase in the concentration ratio of ammonia solution enhanced the effective absorption ratio clearly while the variation of the ammonia vapor flow flux did not exhibit consistent positive influence on absorption process.