The paper considers the effect of feed plate location on the interactions in a seven plate binary distillation column. The mathematical model of the distillation column is deduced based on the equations of mass and energy balances for each stage, detailed model for both reboiler and condenser, and heat transfer equations. The Dynamic Relative Magnitude Criterion, DRMC is used to assess the inte...

Consider binary and ternary mixtures of aromatic compounds composed of benzene/toluene and benzene/toluene/p-xylene, respectively. The present study shows how one can apply both mass and energy balance equations in order to understand the separation of such ideal mixtures by distillation. An adiabatic flash distillation problem is solved graphically for a mixture composed of benzene/toluene. Ri...

The Mediterranean region is of fundamental importance to Europe given its strategic position. The responsibility for its overall ecosystem integrity is shared by European Union Member States (EU-MS) and other Mediterranean countries. A juxtaposition of overlapping governance instruments occurred recently in the region, with the implementation of both the Marine Strategy Framework Directive (MSF...

We extend our iterated linear programming (LP) approach (Bullard and Biegler, 1991) to two-phase vapor-liquid equilibrium problems, which are characterized by regions of continuous operation with nonsmooth boundaries. Here we show that a simple reformulation allows us to handle the disappearance or reappearance of phases and thus allows us to solve a wider class of process problems. The propose...

The multi®essel batch distillation column, as well as con®entional batch distillation, ( ) can be operated in a closed total reflux mode where the products are collected in ®essels along the column. A pre®iously proposed and simulated feedback control strategy for the closed operation is to indirectly adjust the ®essel holdups by using the reflux flow out of the ®essel to control the termperatu...

the synthesis of heat integrated multi-component distillation systems is complex due to its huge search space for structural combination and optimization computation. to provide a systematic approach and tools for the synthesis design of distillation systems, a new method for modeling heat integrated columns is presented, and the operating cost objective function is minimized by improved harmon...

Flash point is the most important variable used to characterize fire and explosion hazard of liquids. Herein, partially miscible mixtures are presented within the context of liquid-liquid extraction processes and heterogeneous distillation processes. This paper describes development of a model for predicting the flash point of binary partially miscible mixtures of aqueous-organic system. To con...

NAND-based solid-state (flash) drives are known for providing better performance than magnetic disk drives, but they have limits on endurance, the number of times data can be erased and overwritten. Furthermore, the unit of erasure can be many times larger than the basic unit of I/O; this leads to complexity with respect to consolidating live data and erasing obsolete data. When flash drives ar...