Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/139525
Title: OPTIMIZATION OF NATURAL GAS LIQUEFACTION AND BOIL-OFF GAS RELIQUEFACTION
Authors: HARSHA NAGESH RAO
Keywords: Natural gas, Liquefaction, Boil-off Gas, Optimization, Regasification, MHEX
Issue Date: 25-Aug-2017
Citation: HARSHA NAGESH RAO (2017-08-25). OPTIMIZATION OF NATURAL GAS LIQUEFACTION AND BOIL-OFF GAS RELIQUEFACTION. ScholarBank@NUS Repository.
Abstract: Natural gas (NG), being clean and abundant, is the fastest growing fossil energy resource. It is usually transported over long distances as liquefied natural gas (LNG) for economic considerations. However, the process of natural gas liquefaction is capital- and energy-intensive. Besides, as LNG is maintained at cryogenic temperatures (about –160°C) during its transport and storage, heat leakage into it is unavoidable despite extensive insulation. This vaporizes a part of the LNG to form Boil-Off Gas (BOG). BOG management at a regasification terminal is crucial. Storing BOG is impractical and flaring it is increasingly becoming unacceptable. Hence, most regasification terminals employ a system to reliquefy BOG, which consumes significant power. Considering these, in this thesis, we employ diverse approaches and techniques, fundamental reasoning, and engineering judgement to address the two crucial problems in the LNG supply chain, viz. optimization of NG liquefaction and optimization of BOG reliquefaction at LNG regasification terminals.
URI: http://scholarbank.nus.edu.sg/handle/10635/139525
Appears in Collections:Ph.D Theses (Open)

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