A machine learning-based operational control framework for reducing energy consumption of an amine-based gas sweetening process

Meisam Moghadasi, Hassan Ali Ozgoli*, Foad Farhani

*Corresponding author for this work

Research output: Contribution to journalConference paperpeer-review

14 Citations (Scopus)

Abstract

This study proposes a data-driven operational control framework using machine learning-based predictive modeling with the aim of decreasing the energy consumption of a natural gas sweetening process. This multi-stage framework is composed of the following steps: (a) a clustering algorithm based on Density-Based Spatial Clustering of Applications with Noise methodology is implemented to characterize the sampling space of all possible states of the operation and to determine the operational modes of the gas sweetening unit, (b) the lowest steam consumption of each operational mode is selected as a reference for operational control of the gas sweetening process, and (c) a number of high-accuracy regression models are developed using the Gradient Boosting Machines algorithm for predicting the controlled parameters and output variables. This framework presents an operational control strategy that provides actionable insights about the energy performance of the current operations of the unit and also suggests the potential of energy saving for gas treating plant operators. The ultimate goal is to leverage this data-driven strategy in order to identify the achievable energy conservation opportunity in such plants. The dataset for this research study consists of 29 817 records that were sampled over the course of 3 years from a gas train in the South Pars Gas Complex. Furthermore, our offline analysis demonstrates that there is a potential of 8% energy saving, equivalent to 5 760 000 Nm3 of natural gas consumption reduction, which can be achieved by mapping the steam consumption states of the unit to the best energy performances predicted by the proposed framework.

Original languageEnglish
Pages (from-to)1055-1068
Number of pages14
JournalInternational Journal of Energy Research
Volume45
Issue number1
DOIs
Publication statusPublished - Jan 2021
Externally publishedYes
EventInternational Conference on Smart and Sustainable Technologies (4th : 2019) - Croatia, Croatia
Duration: 18 Jun 201921 Jun 2019
Conference number: 4th

Keywords

  • data-driven operational control
  • energy consumption reduction
  • machine learning
  • natural gas sweetening

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