Abstract: Compared with the US, Europe and Japan, the construction of LNG terminal in China started late, and our own technology and domestic equipment have not yet experienced the long-term operation test, which brings certain uncertainties to the long-term stable operation of the devices. Starting from the introduction of the technology development and the design scheme of the main equipment of LNG terminal in China, this paper introduces the technology characteristic and the localization process including the discharge arm, compressor, cryogenic pump, gasifier and cryogenic valves. Then it compares the actual operation of the domestic and imported equipment and concluded that most of the main parameter index of domestic equipment have reached the standards of imported products of the same type. The comparison study results indicate that the introduction, development, trial, promotion and improvement of technical research path can continue to improve the reliability and stability of domestic equipment. Such equipment has had strong quality competitiveness with the capability to ensure the long-term stable operation of the device.

Key words: localization, BOG compressor, ship unloading arm, cryogenic pump, gasifier, cryogenic valves