classification：mother and son tank
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sub tank and master tank are tanks filled with thermal insulation material after parallel connection of several sub tanks containing medium. it is usually built to meet the requirements of large volume and pressure storage ³~ 10000m ³ storage scale) lng gasification station is widely used, and the working conditions of pta and pte require a large amount of gas protection are also applicable.
the cryogenic liquid sub tank and master tank are composed of several sub tanks, one master tank, corresponding process pipelines, valves, instruments, etc.
sub tank: as the main container for low temperature medium, it is made of austenitic stainless steel s30408; the sub tank is a vertical cylindrical leg structure. according to the volume, 4, 7 or 10 sub tanks are arranged in a certain way to connect the gas and liquid phases of all or groups of sub tanks through pipes.
mother tank: as the protective shell of thermal insulation system, q345r / 16mndr material is usually used. the mother tank contains all the sub tanks, and the powder accumulation insulation is used for cold insulation to ensure that the storage medium is gasified as little as possible.
main technical parameters
storage media: lng, ln2, lo2, lar, lc2h4, etc
working pressure: 0.2mpa ~ 3.0mpa
single unit volume: 600m ³~ 3000m ³ equipment type: tank, pressure vessel
compared with the vacuum tank with the same volume, the single storage capacity of the equipment is large, with less land occupation, less investment and simple operation.
the operation pressure of the equipment is maintained by self supercharger without booster pump, bog compressor and other equipment. the operation cost is low and the maintenance is simple.
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