A P-Graph approach for the synthesis of hydrogen networks with pressure and impurity constraints. (18th August 2021)

• Record Type: Journal Article
• Authors: Tan, Jian Xiang; Tan, Hong Sheng; Peter Affery, Amelie; Ong, Ian Yan Beng; Foo, Dominic C.Y.; Aviso, Kathleen B.; Tan, Raymond R.; Yoo, ChangKyoo
• Is Part Of: International journal of hydrogen energy. Volume 46:Number 57(2021)
• Page Start: 29198
• Page End: 29215
• Publication Date: 2021-08-18
• Subjects: Hydrogen header -- Direct reuse/recycle -- Regeneration -- Process optimisation -- Near-optimal solution -- Resource conservation; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2020.08.286
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: The increasing demand for hydrogen in refineries and petrochemical plants is challenging these facilities to minimise their hydrogen utility without incurring high capital and operating costs. As environment-related fuel specifications become more stringent, the demand for hydrogen increases, especially for the operation of hydrodesulphurisation in refineries. A P-graph model is developed in this paper for the synthesis of hydrogen networks. The model is capable of generating optimal and near-optimal solutions for the hydrogen network. The proposed methodology is computationally efficient and require minimal understanding of programming language. The developed model includes both direct recycle/reuse and regeneration schemes; and accounts for pressure and impurity constraints in the hydrogen network. In addition, the application of hydrogen header can also be handled by the P-graph model. The methodology is illustrated with three literature examples and the results obtained match those reported in literature. Graphical abstract: Image 1 Highlights: A P-graph model is developed for hydrogen networks. Pressure and impurity constraints are considered. Direct reuse/recycle and regeneration schemes are included. Hydrogen networks with headers can be designed.