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A new retrofit approach to the absorption-stabilization process for improving energy efficiency in refineries

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  • Liu, X.G.
  • He, C.
  • He, C.C.
  • Chen, J.J.
  • Zhang, B.J.
  • Chen, Q.L.

Abstract

In a refining complex, an absorption-stabilization process used in the production of end-use petro-products (i.e. stable gasoline and liquefied petroleum gas) is energy-intensive and costly. A new absorption-stabilization process with a two-stage condensation section is introduced in this work to further improve energy-use performance. In the new process, a condenser, a condensed oil tank, and a side-reboiler are integrated into the original process and then a heat integration scheme is performed. Compared with the existing process, the proposed process can reduce the cold utility and hot utility by 17.98% and 25.65%, respectively, as well as decrease the total annual operating costs of the heat exchanger network by 17.48%. Additionally, the process retrofit reduces the annual operating costs of cooling water and steam by about $346,617 at the expense of capital costs around $487,006, and the corresponding payback period is approximately 17 months.

Suggested Citation

  • Liu, X.G. & He, C. & He, C.C. & Chen, J.J. & Zhang, B.J. & Chen, Q.L., 2017. "A new retrofit approach to the absorption-stabilization process for improving energy efficiency in refineries," Energy, Elsevier, vol. 118(C), pages 1131-1145.
    • Handle: RePEc:eee:energy:v:118:y:2017:i:c:p:1131-1145
    DOI: 10.1016/j.energy.2016.10.128
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    1. Liu, Siyao & Cui, Chengtian & He, Jie & Sun, Jinsheng, 2018. "Feasibility assessment of a novel refrigeration FCC gas plant driven by self waste heat," Energy, Elsevier, vol. 145(C), pages 356-366.
    2. Talaei, Alireza & Oni, Abayomi Olufemi & Ahiduzzaman, Mohammed & Roychaudhuri, Pritam Sankar & Rutherford, Jeff & Kumar, Amit, 2020. "Assessment of the impacts of process-level energy efficiency improvement on greenhouse gas mitigation potential in the petroleum refining sector," Energy, Elsevier, vol. 191(C).

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