Daewoo Engineering & Construction (Daewoo E&C) announced on Feb. 26 that it had completed the installation of the ultra-low-temperature heat exchanger at the Nigeria Liquefied Natural Gas (NLNG) Train 7 Project on Feb. 9. The heat exchanger is the main core process that accounts for 70 to 80 percent of the entire LNG facility.
The process of refining and liquefying natural gas through the cryogenic temperature heat exchanger is classified as the most critical stage in the LNG value chain as it is crucial for reducing the volume of natural gas to make it suitable for transportation via sea routes.
The ultra-low-temperature heat exchanger installed this time utilizes Air Products’ AP-C3MR technology, making it significant as the world’s largest capacity among ultra-low-temperature heat exchangers constructed using this technology.
Daewoo E&C’s NLNG Train 7 site involves LNG liquefaction and ancillary facility construction with a total contract value of 2.1 trillion won (US$1.58 billion). It is recognized as the first time for South Korea to participate in the engineering, procurement, and construction (EPC) sector of LNG liquefaction plants as an original contractor, marking a pioneering milestone in the industry.
With the successful completion of the installation of the cryogenic temperature heat exchanger incorporating a patent for low-temperature cooling technology, Daewoo E&C has secured a record of installing the largest ever single-unit capacity heat exchanger. Additionally, the company now possesses EPC achievements across the entire spectrum of LNG projects thanks to the successful conclusion of this project.
Lee Won-gil, the project manager at Daewoo E&C, said, “We are proud that the first LNG liquefaction plant site in Korea to participate in as the EPC primary contractor is running safely. The successful completion of the installation of ultra-low-temperature heat exchangers is a testament to Daewoo E&C’s excellent technical capabilities and experience based on its abundant history of performing similar tasks over the years.”