Cryogenic liquid sub-mother tank
Cryogenic liquid sub-tank
Sub-mother tank refers to a storage tank in which multiple sub-tanks containing medium are connected in parallel and placed in a mother tank filled with insulating materials in a certain arrangement. It is usually built to meet the requirements of large-volume and pressurized storage. It is widely used in the field of medium and large (1000m³~10000m³ storage scale) LNG gasification stations. PTA, PTE and other working conditions that require a large amount of protective gas are also more suitable.
Product Details
product structure
Cryogenic liquid sub-tank is composed of multiple sub-tanks, a mother tank and corresponding process pipelines, valves, instruments, etc.
Sub-tank: As the main container for the low-temperature medium, it is made of austenitic stainless steel S30408; the structure of sub-tank is vertical-cylindrical-leg . According to the size of the volume, 4, 7 or 10 sub-tanks are arranged in a certain arrangement. The gas and liquid phases of all or grouped sub-tanks are connected through pipelines..
Mother tank: As the protective shell of the thermal insulation system, Q345R/16MnDR material is usually used. The mother tank contains all the sub-tanks, and adopts powder accumulation insulation for cold preservation to ensure that the storage medium is as little as possible to vaporize.
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The main technical parameters：
Storage medium: LNG, LN2, LO2, LAr, LC2H4, etc.
Working pressure: 0.2MPa~3.0MPa
Single unit volume: 600m³~3000m³
Equipment type: storage tank, pressure vessel
main advantage
The single equipment has a large storage capacity, which occupies a smaller area than a vacuum tank of the same volume, has less investment, and is easy to operate..
The equipment maintains the operating pressure through a self-booster, without the need for booster pumps, BOG compressors and other equipment, with low operating costs and easy maintenance.
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