Multi-objective optimization hydrogen network in refinery expansion with improved transport constraint

Juwari, Renanto*, Rizal Arifin, Rendra Panca Anugraha, Fa'izul Qholbi Tamimi, Kelben Roostewen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In developing countries like Indonesia, adding a new unit for hydroprocessing facilities is more efficient than modifying the existing equipment. When the addition occurs, refiners should analyze if the existing hydrogen network can supply enough hydrogen to the new unit before constructing a costly hydrogen plant. Current studies on the hydrogen network have yet to consider pressure drop adequately. Therefore, this paper integrates pressure drop estimation and density prediction into the multi-objective MINLP-based hydrogen network. The multi-objective problem is solved sequentially by adding a minor unit to obtain each configuration's maximum flowrate and total annual cost. The optimal configuration based on the combined objective function is to add 1 PSA and compressor for a hydrogen purity of 0.84 and specified pressure requirements. The pressure drop integration shows an insignificant impact averaging 0.004 m3/s of maximum flowrate difference compared to optimization without pressure drop.

Original languageEnglish
Pages (from-to)368-380
Number of pages13
JournalInternational Journal of Hydrogen Energy
Volume64
DOIs
Publication statusPublished - 25 Apr 2024

Keywords

  • Hydrogen network
  • MINLP optimization
  • Multi-objective
  • Pressure drop

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