Regarding the issue of two-stage absorption and two-stage desorption
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Energy conservation is a key issue in the distillation process. The use of two-stage absorption and two-stage desorption can help save approximately 30% of energy. Could we analyze from a theoretical perspective why two-stage absorption and two-stage desorption enable energy savings and reduced consumption?
Two absorption stages and two desorption stages? I’m hearing about it for the first time. Could you give an introduction?
It involves taking a stream of semi-poor liquid from the side stream of the distillation tower and returning it to the absorption tower, where it is fed in the middle part of the tower
In the two-stage absorption process, the semi-poor liquid is used to absorb the rich gas, while the poor liquid is used to absorb the poor gas; in other words, it’s like \"using clean water to wash one’s cap and dirty water to wash one’s feet\". When the mass transfer driving force is high, a semi-poor liquid is used; when it is low, a poor absorbent is used. This reduces the amount of poor absorbent required and thus decreases the volume of absorbent that needs to be recovered and processed. This post was last edited by LTY on 2009-4-6 08:37.]