Economic analysis of model predictive control on dimethyl ether purification process

Abdul Wahid, Denis Yanuardi, Dwi Ratna Mustafida

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

Abstract

The dimethyl ether product (DME) can be used as an alternative energy that is more environmentally friendly and sustainable. At the DME purification plant, the mixture of DME, methanol and air in the feed will be separated to obtain a pure DME of 99% concentration. Model predictive control is used to control the processes in the DME purification plant using first order plus dead-time models (FOPDT). This study examines the use of MPC technically by comparing it with the control performance of the proportional-integral (PI) controller and analyzed economically. The result, the eight single MPCs (SMPCs) performances are better than the PI controllers in overcoming the disturbance with the decrease of the integral of absolute error (IAE) by 40 % to 96%. Thus, there is a saving of utility (water) used is 0,015%. Since the utility is water, the economic value is low. This led to a considerable payback period (PBP) of 14.5 years, and net present value (NPV) of USD -846 in the feed flowrate disturbance scenario of 5%, so that the use of SMPC in the DME purification plant is economically unfeasible. However, the use of two multivariable MPCs (MMPCs) instead of the eight SMPCs will decrease the PBP and will increase the NPV, therefore, the use of MMPC can be considered for further research.

Original languageEnglish
Title of host publicationRecent Progress on
Subtitle of host publicationEnergy, Communities and Cities - Proceedings of International Symposium on Sustainable and Clean Energy, ISSCE 2019: Quality in Research 2019
EditorsYuliusman Yuliusman, Cindy Dianita
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735419896
DOIs
Publication statusPublished - 4 May 2020
Event16th International Conference on Quality in Research, QiR 2019 - 2019 International Symposium on Sustainable and Clean Energy, ISSCE 2019 - Padang, Indonesia
Duration: 22 Jul 201924 Jul 2019

Publication series

NameAIP Conference Proceedings
Volume2230
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference16th International Conference on Quality in Research, QiR 2019 - 2019 International Symposium on Sustainable and Clean Energy, ISSCE 2019
CountryIndonesia
CityPadang
Period22/07/1924/07/19

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