Sensitivity analysis of total pressure and feed compositions in equilibrium flash process

Hayatoshi Sayama, Youichi Tozawa, Kazuhiko Suzuki, Yukiyasu Shimada, Kengo Shimizu

Research output: Contribution to journalArticle

Abstract

This paper presents analytical expressions of the sensitivity coefficients for the total pressure and the feed liquid compositions in the multicomponent equilibrium flash process. The partial derivatives of temperature with respect to the total pressure are derived analytically by extending the implicit function theorem. The distillation calculation methods which chose the M-1 feed compositions as the independent variables and the one feed composition as the dependent variable defined d-sensitivity coefficients to satisfy the stoichiometric equations. This paper assumes that all the M feed compositions are independent and defines i-sensitivity coefficients, which violate the stoichiometric equations of the liquid compositions. d-sensitivity coefficients can be obtained from i-sensitivity coefficients and not vice versa. Numerical solutions are shown for both sensitivity coefficients.

Original languageEnglish
Pages (from-to)303-310
Number of pages8
JournalKagaku Kogaku Ronbunshu
Volume19
Issue number2
DOIs
Publication statusPublished - 1993

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Sensitivity analysis
Chemical analysis
Liquids
Distillation
Derivatives
Temperature

Keywords

  • Equilibrium flash process
  • Feed compositions
  • Sensitivity analysis
  • Sensitivity coefficients
  • Total pressure

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Sensitivity analysis of total pressure and feed compositions in equilibrium flash process. / Sayama, Hayatoshi; Tozawa, Youichi; Suzuki, Kazuhiko; Shimada, Yukiyasu; Shimizu, Kengo.

In: Kagaku Kogaku Ronbunshu, Vol. 19, No. 2, 1993, p. 303-310.

Research output: Contribution to journalArticle

Sayama, Hayatoshi ; Tozawa, Youichi ; Suzuki, Kazuhiko ; Shimada, Yukiyasu ; Shimizu, Kengo. / Sensitivity analysis of total pressure and feed compositions in equilibrium flash process. In: Kagaku Kogaku Ronbunshu. 1993 ; Vol. 19, No. 2. pp. 303-310.
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