Site Integration of LNG Processes - Cold Recovery from Scrub Column Bottoms
The objective of this project is to perform a site integration study on the Liquefied Natural Gas (LNG) process in the third Malaysia Liquefied Natural Gas (MLNG) plant and therefore to propose a new initiative to enhance energy recovery in order to maximize production of LNG as well as Liquid Pe...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English |
| Published: |
2007
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| Subjects: | |
| Online Access: | http://utpedia.utp.edu.my/14461/1/Site%20Integration%20of%20LNG%20Processes%20-%20Cold%20Recovery%20from%20Scrub%20Column%20Bottoms.pdf http://utpedia.utp.edu.my/14461/ |
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| Summary: | The objective of this project is to perform a site integration study on the Liquefied
Natural Gas (LNG) process in the third Malaysia Liquefied Natural Gas (MLNG) plant
and therefore to propose a new initiative to enhance energy recovery in order to
maximize production of LNG as well as Liquid Petroleum Gas (LPG) as a byproduct in
the gas business. Site integration study would help to optimize utilization of energy for
maximum production of LNG as well as LPG. A basic heat integration study was carried
out, and it was realized that the third plant was already highly integrated in design. Since
there was not much room to improve on the refrigeration cycle, opportunities on processto-
process heat exchange was explored. The selected initiative was based on the concepts
of cold recovery, whereby the cold stream from the scrub column bottoms in the
liquefaction process was used as a base for heat removal from the treated dry natural gas
stream. This heat exchange was to take place before the heat removal from treated dry
natural gas stream into the propane circuit at a high-pressure stage. This would require an
installation and operation of a new process-to-process heat exchanger. |
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