cryogenic tank

Specific process of liquid oxygen storage tank

LNG storage tanks are generally divided into vertical and horizontal types as LNG storage devices. The advantages of vertical tanks mainly lie in their smaller footprint, and the requirements for tank cofferdams and safety spacing are smaller than those for horizontal LNG storage tanks when building vertical LNG storage tank gasification stations, so they are chosen by business users.

When we manufacture LNG cryogenic storage tanks, in order to ensure that the air pressure inside the tank is normal, in addition to the vacuum between the inner and outer layers, we also take the top of the tank to keep it cold and the bottom of the tank to burst the cold.

Features of the components of our LNG cryogenic storage tanks
1 Inner tank wall
The inner tank wall is the main component of the cryogenic storage tank and is made of low temperature resistant steel plates with good mechanical properties welded together.

As the carbon dioxide storage tank is the storage of low-temperature liquid, once the accident occurs, the refrigerated liquid will evaporate a lot, the amount of gasification refrigeration of the original state about 300 times, in the atmosphere will form an automatic detonation gas mass.

In the production of low temperature liquid storage tanks, in order to ensure the insulation effect, our company’s insulation material selection under the hot state of pearl sand filling sandwich and vacuum

For excessive residual stresses caused by welding, the welding residual stresses should be eliminated after welding. Industrial liquid nitrogen at a very low temperature from nitrogen pressurized into a colorless liquid, then the temperature of liquid nitrogen is very low,

We are in the production of low temperature pressure vessels, for low temperature pressure vessels first of all to choose the appropriate materials, these materials should have good toughness at the use of temperature.

Design temperature of -20 ℃ below the pressure vessel: liquefied ethylene, liquefied natural gas, liquid nitrogen and liquid hydrogen storage and transport of containers are low temperature pressure vessels.

The low temperature liquid nitrogen storage tank series is a double-layer vacuum powder adiabatic storage tank for storing liquid oxygen, liquid nitrogen, liquid argon, carbon dioxide and liquefied natural gas.

The Dewar bottle is a small pressure vessel that is operated airtight to provide good natural ventilation during use. Prevent leakage of gas into the workplace air. Handle lightly, prevent breakage of cylinders and accessories, and equip emergency treatment equipment for leaks.

The liquid argon cryogenic storage tank is made of stainless steel for the inner lining and Q235B or Q345R for the outer lining, and the surface anti-corrosion coating is done by sandblasting, rust removal, blowing, spraying and other processes, while a two-component fast-curing liquid coating is used.

Dewar bottles usually have four valves: one for liquids, one for gases, one to empty and one to boost pressure. In addition, there is a pressure gauge and level gauge for the gaseous phase. Dewar cylinders are equipped with a rupture disc as well as a safety valve.

The products in this series are double-layer vacuum powder insulation containers, divided into two forms, vertical and horizontal, and the product specifications can be customised and supplied from 1 cubic metre to 200 cubic metres. They are mainly used to store liquid oxygen, nitrogen, argon, carbon dioxide and natural gas.

LNG storage tanks and pipes are made of austenitic stainless steel. Austenitic stainless steels have excellent low temperature properties. But the linear expansion coefficient is high. under the temperature conditions of liquefied natural gas The shortening rate of stainless steel is about 3/1000, and for the 304L material pipeline, when the working temperature is -162 degrees, the 100 m pipeline can be shortened about 300 mm.