Functional characteristics of liquid N2 storage tanks

Since nitrogen is non-corrosive, no special building materials are required. However, the selected building materials must be able to withstand the low temperatures of liquid nitrogen. Containers and piping systems shall be designed in accordance with the relevant pressures and temperatures in accordance with the standards of the relevant national agencies or the Ministry of Communications. Although nitrogen is commonly used as a gas, nitrogen is generally stored and transported in a liquid state, so that the product is supplied at a lower cost.

When nitrogen is converted to a liquid state, it becomes a cryogenic liquid. A cryogenic liquid is a liquefied gas having a boiling point generally below -238 °F (–150 °C). The boiling point of liquid nitrogen is –320.5°F (–195.8°C). Because the temperature difference between the product and the surrounding environment is very large even in winter, it is important to keep the liquid nitrogen and the surrounding environment isolated. The product also requires specialized use and storage equipment.

The low temperature liquid N2 storage tank provided by Jianshen company has the characteristics of long service life, compact structure, small floor space, centralized control, manipulation and maintenance.

The cryogenic liquid N2 storage tank is a double-layer fixed vacuum powder adiabatic cryogenic storage tank. The inner tank material is made of stainless steel, and the outer shell material is Q235B or 16MnR. The surface anti-corrosion coating of the liquid N2 tank adopts sandblasting, rust removal, purging, spraying and the like. A two-component fast curing liquid coating is also used.

The cryogenic liquid nitrogen storage tank is a pressure vessel for storing liquid medium, providing high-purity gas, and is economical and safe to be inflated using a high-pressure steel cylinder. In the interlayer between the inner container and the outer container, the pearl sand in the hot state is selected as the heat insulating material and vacuumed, and a pressure gauge is arranged on the upper part of the liquid inlet port, and the differential pressure level gauge is combined to grasp the liquid storage amount at any time, so as to facilitate liquid filling. Drain the operation and observe the pressure change of the liquid nitrogen storage tank.