The control design optimization of gas processing plant based on plantwide control method

Safira Firdaus Mujiyanti*, Totok Ruki Biyanto, I. Putu Eka Widya Pratama, Izef Aulia Kurniawan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

To extract gas from the production well, Gas Processing Plant needed to purify gas from dangerous compositions, such as CO2, H2S, and H2O. Gas Processing Plant divided into two plants, Gas Sweetening Plant to remove CO2 and H2S by amine liquid and Gas Dehydrating Plant to remove H2O by triethylene glycol (TEG) liquid. Because it's a crucial and complex process, control design must be implemented optimally. Learn more about gas extracting from production well, although, the control design has been installed in this plant, the uncertain gas mass flow rate from the production well can disturb the process. Amine and TEG liquid can be the outset of the desired setpoint, consequently the gas purifying does not run optimally. The uncertain gas mass flow rate as disturbance of process must be detected. It can be information for the actuator to adjust the liquids to minimize the disturbance effect. When the model of disturbance can be predicted, so the signal for the actuator will can be predicted too. The Model Predictive Control (MPC) design as supervisory control in the Plantwide Control (PWC) Method will be proposed in this research to optimize the control design of the Gas Processing Plant. PWC method consists of eight steps, wherein this method there is two layers of control, such as regulatory and supervisory control. PWC design gives the stability response, proven by maximum overshoot, steady-state error, settling time, and Integral Absolute Error (IAE). In economic calculation, the PWC design of the Gas Processing Plant can increase the profit 688.19 U$ per day. From the result, the control design optimization of Gas Processing Plant based on the PWC method has been applied successfully.

Original languageEnglish
Title of host publicationEngineering Physics International Conference 2021, EPIC 2021
EditorsAyodya Pradhipta Tenggara, Nur Abdillah Siddiq, Sita Gandes Pinasti, Rizki Insyani, Jundika Candra Kurnia, Geetali Saha, Rasool Moradi-Dastjerdi
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735444843
DOIs
Publication statusPublished - 22 May 2023
Event3rd Engineering Physics International Conference, EPIC 2021 - Yogyakarta, Virtual, Indonesia
Duration: 24 Aug 202125 Aug 2021

Publication series

NameAIP Conference Proceedings
Volume2580
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd Engineering Physics International Conference, EPIC 2021
Country/TerritoryIndonesia
CityYogyakarta, Virtual
Period24/08/2125/08/21

Keywords

  • Disturbance
  • Gas Processing Plant
  • Model Predictive Control (MPC)
  • Plantwide Control (PWC)

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