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规整填料在加压精馏中的传质性能 被引量:6
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作者 刘春江 王利东 +1 位作者 袁希钢 余国琮 《化工学报》 EI CAS CSCD 北大核心 2001年第1期13-14,共2页
Experiments were conducted in the high pressure distillation column containing corrugated structured packing of Mellapak 250Y under operating pressure from 0.3 MPa to 2 MPa, using n -butane and n -pentane mixture as t... Experiments were conducted in the high pressure distillation column containing corrugated structured packing of Mellapak 250Y under operating pressure from 0.3 MPa to 2 MPa, using n -butane and n -pentane mixture as the separating material. The height equivalent to a theoretical plate (HETP) was evaluated from the measured n -butane liquid concentration profile along the packing. After carefully analyzed, the HETP may be reasonably divided into two parts. The first part is the ideal height of mass transfer unit, which is caused by the mass transfer resistance between vapor and liquid. Another part is the height of backmixing unit (HBU), which is caused by the backmixing of vapor and liquid. The parameters of HBU correlation were evaluated by the experimental data. The present HETP correlation was used to predict the experimental results in literature, and well agreement was found between them. 展开更多
关键词 规整填料 液相返混 气相返混 加压精馏 返混传质单元高度 填料等板高度 传质性能 规整填料
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