【Ten Years of Rapid Development in Chemical Equipment】China’s first 1.5t/h LNG cryogenic plant completed its Factory Acceptance Test (FAT) successfully 3061-2026

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Let’s give praise and support to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Great Development in Chemical Engineering Equipment】A continuously updated summary post is available – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html *****************Recently, China’s first 1.5t/h LNG cryogenic unit, independently developed by Shanghai Qiyao Technology Group Co., Ltd. (hereinafter referred to as “Qiyao Technology”), under the auspices of CSIC 711 Institute, successfully passed its Factory Acceptance Test (FAT). During the FAT period, the device successfully passed the 200-hour continuous full-load operation test, with all performance indicators meeting the design requirements; it was then shipped on April 1, 2026. This move marks a breakthrough in China’s efforts to achieve domestic production of key equipment for the treatment of LNG evaporative gases on ocean-going vessels. The cryogenic unit is the core equipment of the liquid cargo systems on LNG bunkering ships and transport vessels; the cold energy it generates is used to deeply cool the LNG, which is then sprayed back into the tank to achieve re-liquefaction of the BOG (evaporated gas). This process not only avoids the economic losses and greenhouse gas emissions associated with the direct combustion of BOG, but also maintains the temperature and pressure in the liquid cargo tank within optimal ranges, thereby preventing the generation of BOG at its source. It offers significant advantages such as stability and efficiency, safety and reliability, as well as the ability to operate with minimal maintenance over extended periods. For a long time, the key technologies and products related to this device have been monopolized by a few foreign companies, which has become one of the factors hindering the independent development of large LNG carriers in our country. Following the successful delivery in 2024 of China’s first small-scale LNG refueling vessel equipped with a 1.0t/h cryogenic unit, Qi Yao Technology spent two years working diligently to make breakthroughs and improvements in various key technologies, and finally developed China’s first cryogenic unit suitable for use on large ocean-going LNG carriers. Over the course of two years of intensive research, all relevant parties joined forces to form a joint task force comprising Qi Yao Technology, Shandong Marine Energy, Jiangnan Shipbuilding, and DNV Classification Society. The experienced technical team from the shipowner, Shandong Ocean Energy, was involved throughout the process in monitoring the quality of the equipment and establishing testing standards, translating the actual requirements of ocean operations into stringent technical specifications. DNV Class Society was involved from the design review stage to the testing phase, ensuring that the equipment met international regulations and safety standards. Jiangnan Shipbuilding provided crucial support in terms of system integration and cabin adaptation. This deep collaboration with Shandong Marine Energy, Jiangnan Shipbuilding, and DNV has established a complete closed loop of \"demand-driven development—collaborative problem-solving—authoritative certification—ship-based testing—commercial application\". This is not only a milestone for Qiyao Technology’s cryogenic technology, but also an important example of collaborative innovation across the entire industry chain to promote the development of self-reliant high-end equipment. Building on this cooperation, all parties will continue to explore deeper collaboration in the field of green and low-carbon shipbuilding technologies, in order to jointly enhance the international competitiveness of China’s LNG industry chain. To ensure the reliability and stability of operation on actual vessels, the project team established testing standards that far exceed existing industry norms. The 200-hour continuous full-load operation test, which can be regarded as a \"devil’s test\" in this FAT, was proposed by the shipowner based on the severe conditions encountered on actual ocean routes, and it was passed in one go under the full supervision of DNV surveyors. During this period, the device underwent tests in all operating mode conditions, performance tests, as well as alarm and ESD tests. Its successful completion of 200 hours of continuous operation without any interruptions indicates that it meets all the stringent requirements for long-term, stable, and safe operation on actual ships, ensuring utmost stability and reliability throughout its operational life of up to 20 years. Currently, this device has been officially installed on the 175K large LNG carrier built at Jiangnan Shipyard, entering the stage of actual ship application. The successful delivery of this device marks a crucial step forward in China’s efforts to localize the key components used in large LNG carriers, as it helps to reduce construction costs and maintenance periods while enhancing the country’s ability to control its own industrial supply chain. Qi Yao Technology will continue to focus on the field of cryogenic technology, contributing more to the green and low-carbon transformation of ships as well as to the development of autonomous high-end equipment.