Dynamics of Continuous Countercurrent Mass-Transfer Processes

连续逆流传质过程的动力学

• 批准号: 8715263
• 负责人: Friedrich Helfferich
• 金额: $ 13.57万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-11-15 至 1991-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8715263&HistoricalAwards=false
• 关键词: Dynamics; Continuous; Countercurrent; Mass; Transfer

The proposed research is aimed at developing a theory for predicting the dynamic behavior of countercurrent mass-transfer columns. All previous models are aimed at predicting the steady-state behavior. The theoretical development will begin with a single component and with finite mass transfer rates to be followed by multicomponent mixtures. Experiments will be conducted on countercurrent packed-column extraction, with concentration disturbances. The effects of reflux on the column dynamics and on the stability will then be analyzed. The dynamic analysis results will be useful in process design and in the control of a host of countercurrent mass-transfer operations, such as distillation, adsorption, absorption, and extraction.

本研究旨在为预测逆流传质塔的动态行为提供理论依据。所有以前的模型都是针对预测稳态行为的。理论的发展将从单一组分开始，然后是多组分混合物的有限传质速率。采用逆流填充柱萃取法进行浓缩扰动的实验研究。然后分析了回流对塔动态和稳定性的影响。动态分析结果将有助于工艺设计和控制一系列逆流传质操作，如蒸馏、吸附、吸收和萃取。