TEG NATURAL GAS DEHYDRATION CONTROL
USING PID CONTROLLER AND MODEL
PREDICTIVE CONTROL
Name of Student: 1. Andreas Aditya H. NRP. 2310 100 093
2. Ferry Kurniawan
NRP. 2310 100 097
Department
: Chemical Engineering FTI-ITS
Advisor
: 1. Prof. Ir. Renanto Handogo, M.S., Ph.D.
2. Juwari Purwo S., S.T., M.Eng., Ph.D.
ABSTRACT
In natural gas processing plant, dehydration process is a
process that is encountered. The existence of hydrocarbons and
moisture content will cause the formation of hydrate crystals that
form are corrosive and can cause blockage of pipes and other
equipment. One way to prevent the occurrence of hydrates is to
reduce or even eliminate the water content in natural gas.
Absorption by using TEG (Triethylene Glycol) is one way to
prevent hydrate formation and corrosion. In this study, and the
regenerate TEG dehydration system will be controlled by
Proportional Integral Derivative Control and Model Predictive
Control using ASPEN HYSYS simulation. Controller performance
is evaluated based on the method of Integral Absolute Value of
the Error. Disturbance in this process is water composition,
which is contained by natural gas, by changing +10% dan -10%.
Based on the research that has been done, control with
Proportional Integral Derivative (PID) Control and Model
Predictive Control (MPC) was applied to the column temperature
vii
regenerator, due to the interaction between the condenser and the
reboiler temperature. Judged Proportional Integral Derivative
(PID) Control (IAE), the performance of Proportional Integral
Derivative (PID) control is better than Model Predictive Control
(MPC), because it produces less IAE.
Keywords
:
control, Model Predictive Control (MPC),
Proportional Integral Derivative (PID) Control,
Tryethylene Glycol (TEG)
viii