Nomenclature

Abbreviations

AE

Algebraic Equation

DAE

Differential and Algebraic Equation

DIB

Di-isobutene

ETBE

Ethyl tert-Butyl Ether

EtOH

Ethanol

GPDC

Generalised Pressure Drop Correlation

HETP

Height Equivalent to a Theoretical Plate

HTC

Heat Transfer Coefficient

IAE

Integrated Absolute Error

iBut

Isobutene

ITAE

Integrated Time-weighted Absolute Error

LMTD

Log Mean Temperature Difference

MON

Motor Octane Number

MTBE

Methyl tert-Butyl Ether

MeOH

Methanol

MIMO

Multiple Input Multiple Output

MPC

Multi-variable Predictive Control

MSS

Multiple Steady States

NBP

Normal Boiling Point

nBut

n-Butenes

ODE

Ordinary Differential Equation

RGA

Relative Gain Array

RON

Research Octane Number

RVP

Reid Vapour Pressure

SISO

Single Input Single Output

TAME

tert-Amyl Methyl Ether

VLE

Vapour Liquid Equilibrium

Symbols

a,

Activity of component, i

A

Heat transfer area

B

Bottoms rate

D

Distillate rate or Diameter

F

Feed rate

h

Liquid height

H

Molar enthalpy

Ka

Adsorption equilibrium constant

Keq

Reaction equilibrium constant

'Vo/e

Reaction rate constant

L

Molar liquid flow or Reflux rate

M

Molar holdup

Mca<

Mass of catalyst

P

Pressure or Profitability

pvap

Vapour pressure

Q

Heat duty

R

Gas constant or Regression coefficient or Electrical resistance

Re

Reynold's number

r,

Reaction rate of component, i

S

Separation factor

t

Time

T

Temperature

V

Heat transfer coefficient

V

Molar vapour flow or Boilup rate or Voltage

x,

Molar liquid concentration of component, i

X

Conversion of limiting reactant

y,

Molar vapour concentration of component, i

z

Feed composition

Greek Characters yt Activity of component, i

A Relative gain p Density

0 Phase angle

Subscripts and Superscripts

0

Initial condition

a

Ambient condition

C

Condenser

L

Liquid phase

R

Reboiler

V

Vapour phase

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