1. The process characteristics of LNG station are low temperature storage and normal temperature use. The design temperature of the storage tank reaches minus 196 degrees Celsius (the boiling point of LNG at room temperature is minus 162 degrees Celsius), and the outbound natural gas temperature is required to be no lower than 10 degrees Celsius of the ambient temperature.
2. The low-temperature storage tanks and low-temperature liquid pumps of the station have better thermal insulation performance, and the cooling performance of valves and pipe fittings is better.
3. The equipment, pipelines, instruments, valves and their accessories in the low temperature area of the LNG station have better operating performance under low temperature conditions, and have good mechanical strength, sealing and corrosion resistance.
4. Since the start-up process of the cryogenic liquid pump relies on the frequency converter to continuously increase the speed to increase the power, increase the flow rate and provide high output pressure, the cryogenic liquid pump requires a faster increase in frequency and power expansion, usually within a few seconds to ten seconds. It can meet the requirements, and the cold and heat insulation performance is better.
5. The gasification equipment is required to be able to resist earthquakes, typhoons and meet the design requirements under ordinary climatic conditions to achieve the gasification flow.
6. The manufacture and daily operation management of cryogenic storage tanks and filters have been incorporated into the national specifications for the manufacture, acceptance and inspection of pressure vessels; gasifiers and cryogenic hydrocarbon pumps are not regulated by relevant laws and regulations in my country. In accordance with the relevant industry standards in the United States, the position of welding, modification, maintenance or moving of the pressure vessel on the pressure vessel body must be reported to the inspection unit of the pressure vessel.
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