Cold energy recovery in an LNG plant

Mahadzir, S. and Gopinadhan, V. (2009) Cold energy recovery in an LNG plant. Chemical Engineering Transactions, 18. pp. 87-92. ISSN 22839216

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

This paper proposes an initiative to maximize the production of LNG and other byproducts in an LNG complex. Using the concepts of cold recovery, the cold stream from the scrub column bottoms in the gas liquefaction process was used as a heat sink. Heat from the treated dry natural gas stream into the propane circuit at a high pressure stage is then removed by the cold scrub column bottoms. This heat exchange is to take place before heat removal from treated dry natural gas stream into the propane circuit at a high pressure stage. The modification would require an installation and operation of a new process-to-process heat exchanger. The expected benefits of having the modification are savings in compression power of the propane and mixed refrigerant compressors. In addition, the reboiler loading on the downstream fractionation unit was also reduced. The estimated value in extra annual production was about RM 43 million (USD 1. 00 = RM 3. 50). This is equivalent to approximately 0. 5 bee or "big cargo equivalent" per year. The expected payback period was calculated within a week after the first year of operations with the newly installed heat exchanger. Copyright © 2009. AIDIC Servizi S. r. l.

Item Type: Article
Additional Information: cited By 1; Conference of 12th International Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES'09 ; Conference Date: 10 May 2009 Through 13 May 2009
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 15:48
Last Modified: 09 Nov 2023 15:48
URI: https://khub.utp.edu.my/scholars/id/eprint/793

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