Apply new guidelines when selecting low-temperature service compressors

摘要

Liquefied gases are transported by tankers and ships and are stored in specially designed tanks. However, when the temperature of liquefied gases—ammonia, ethylene, propylene and liquefied natural gas (LNG), etc.—is considerably low, the vaporization occurs very quickly due to ambient temperatures. As the liquid vaporizes, the pressure inside the tank, likewise, increases. The rising pressure must not exceed the design pressure of the tanker/storage tank. To control pressure, the re-liquefaction process was adopted, in which reciprocating compressors are an indispensable part of the whole system.