LNG tank-Jianshen Tank

LNG storage tanks are facilities specially designed to store natural gas liquefied at -162°C.

LNG storage tank：Function: Store liquefied natural gas, usually a double-layer tank with high thermal insulation performance.

LNG storage tank

The cold insulation system is an important part of LNG storage tanks, including the cold insulation layer at the bottom of the tank, the cold insulation layer at the tank wall and the cold insulation layer at the ceiling.

Cold insulation of LNG storage tanks

Regularly clean, refuel and maintain the equipment in the production area to ensure that various equipment operates normally and is flexible to open. Ensure the hygiene and clean...

lng gasification station regularly cleans the equipment in the production area

Special low-temperature valves should be used to meet the requirements of LNG conveying pressure (pressure level PN1.6Mpa) and flow rate, and have low-temperature resistance (-196℃). Mainly include...

LNG gasification station valves

The air bath type vaporizer is set to switch manually, which can be switched according to the temperature of the natural gas at the outlet of the vaporizer. A safety valve is ins...

LNG gasification station air temperature vaporizer

A safety explosion-proof device is also installed on the outer shell. Non-personnel are not allowed to disassemble it to avoid danger! The valves and instruments of the tank box are set in the valv...

A safety explosion-proof device is installed on the outer shell of the low temperature LNG storage tank

Introduction to LNG filling stations

Environmental protection measures for LNG storage tanks

Safety features of LNG tanks

Basic principles and construction of LNG storage tanks

Cryogenic LNG storage tanks are commonly found in large liquefied natural gas carriers

Cryogenic LNG storage tanks

Cryogenic LNG tanks are mainly used to store and transport liquefied natural gas.

Cryogenic LNG tanks

The manufacturing characteristics of Dewar flasks include a precise double-layer structure

Manufacturing characteristics of Dewar bottle

Oxygen is a strong combustion aid with extremely strong oxidizing properties. Liquid oxygen is close to combustibles and is very likely to cause combustion when exposed to open flames; it is easy t...

Oxidizing properties of cryogenic liquids in cryogenic storage tanks

③The equipment, pipelines, instruments, valves and their accessories in the low-temperature area of the LNG station should have good operating performance under low-temperature working conditions...

The equipment in the low-temperature area of the LNG station should have good operating performance under low-temperature working conditions

①The process characteristics of the LNG station are "low temperature storage and normal temperature use". the natural gas out of the station is required to be no less than 10 degrees Celsius below...

LNG gasification station

The outer surface of the storage tank adopts the fully automatic steel shot sandblasting rust removal process, which is very thorough in rust removal, completely reaching sa2.5 or above, and th...

The outer surface of the LNG storage tank adopts the fully automatic steel shot sandblasting rust removal process

The special vacuum process is adopted to greatly shorten the vacuum time of the inner tank and the interlayer, ensuring that the vacuum degree of the interlayer is twice higher than the nationa...

LNG storage tank adopts special vacuum process

Seventh, the sand filling adopts negative pressure filling and positive pressure compaction technology to ensure the uniformity of the interlayer pearl sand. The vibrating rod compaction process is...

The LNG storage tank uses negative pressure filling and positive pressure compaction technology

Sixth, the pearl sand is specially dehydrated and pretreated before filling the sand, and the interlayer is heated and replaced with nitrogen, which greatly reduces the degassing source.

Before filling the LNG storage tank with sand, the pearl sand is specially dehydrated and pretreated

The corrosion resistance of the paint is extended, the corrosion resistance of the stainless steel plate is improved, and the degassing of the interlayer is reduced, that is, the life of the vacuum...

The inner and outer surfaces of the carbon steel shell of the LNG storage tank are sandblasted and rust-removed

The inner and outer surfaces of the stainless steel liner are degreased and pickled and passivated, and the inner and outer surfaces of the carbon steel shell are sandblasted and rust-removed t...

The inner and outer surfaces of the stainless steel liner of the LNG storage tank are degreased and pickled and passivated

The bends are bent on CNC pipe bending machines, strictly ensuring the geometric dimensions of the bends. No elbow connection is used, which greatly reduces pipeline resistance and improves the...

LNG tank bends are bent on CNC pipe bending machines

The internal structure of LNG cryogenic storage tank includes outer shell, inner liner and insulation layer.

LNG cryogenic storage tank

In order to reduce and avoid the occurrence of LNG tank failure accidents, regular monitoring and nondestructive testing are required.

Principles of nondestructive testing technology for LNG tanks

Microwave nondestructive testing technology began in the 1960s. Microwave nondestructive testing technology is to irradiate electromagnetic waves of a certain frequency in GHzMHz3300~330 to the object to be tested.

Microwave nondestructive testing of LNG tanks

Liquid nitrogen is vaporized by the vaporizer on the station and then charged into the tank from the gas phase pipeline of the natural gas tank. When the tank pressure reaches 0.2MPa, the filling i...

Continuously replenish liquid nitrogen to keep the LNG tank cold

Purge at least 2-3 times until the temperature of the blown gas is ≥-20°C and the natural gas concentration is less than 3% (volume concentration) to be qualified. Then, the tank is kept at 0.05MPa...

Check the LNG tank regularly to ensure that the tank is kept at positive pressure

Purge the inner container with oil-free dry (dew point ≤-40°C) nitrogen. During the purging, the gas is filled into the tank through the gas phase pipeline, and the filling is stopped after the tan...

Purge the LNG tank with oil-free dry nitrogen