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HWAHAK KONGHAK,
Vol.31, No.1, 36-44, 1993
Vol.31, No.1, 36-44, 1993
단일탑 증류공정의 정상상태 해의 다중성
Multiplity of Steady State Solutions of Single Column Distillation
본 연구에서는 증류공정을 포함한 단 분리공정에 적합한 Continuation 알고리듬을 통하여 단일탑 증류공정에서의 정상상태 해의 다중성을 구현하였다. 다중해는 주로 농도의 설계사양에 대하여 많이 나타났으며 농도의 설계사양은 공정의 조업 유연성을 떨어뜨리는 역할을 하였다. 열역학적 비이상성이 큰 문제의 경우는 주로 내부 유량 변수들에 대하여 다중해를 나타났으며 다중해를 갖는 공정이라 해서 모든 변수에 대하여 정상상태 해의 다중성이 존재하지는 않았다.
This paper presents the steady state multiplicity for single column distillation. A continuation method which is adequate to implement the multiplicity of separation precesses including distillation is em-ployed. Tight design specification, especially concentration specification, causes most of multiplicity of the solutions and this takes a role of deteriorating the flexibility of process operation. In case of having severe nonideality in the thermodynamic properties, the column internal flow rates may have multiple solutions. But, not all the variables have multiplicities.
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