Development background of liquid nitrogen equipment

       Let's first understand what liquid nitrogen is before learning aboutliquid nitrogen equipmentprinciples and functions. Liquid nitrogen is inert, colorless, odorless, non-corrosive, non-flammable, and extremely low in temperature. Nitrogen makes up most of the atmosphere (78.03% by volume, 75.5% by weight). Nitrogen gas is inert and does not support combustion. Frostbite is caused by the large amount of heat absorption during vaporization. Nitrogen accounts for 78% of the air. At normal pressure, the temperature of liquid nitrogen is -196℃; 1 cubic meter of liquid nitrogen can expand to 696 cubic meters of pure gaseous nitrogen at 21°C. Liquid nitrogen is a colorless and odorless cryogenic liquid and high-pressure gas. Liquid nitrogen (usually written as LN2) is liquid nitrogen formed at low temperatures. The boiling point of nitrogen is -196℃. At normal pressure, below this temperature, liquid nitrogen will form; if pressurized, liquid nitrogen can be obtained at a higher temperature.

       In industrial liquid nitrogen equipment manufacturing, liquid nitrogen is obtained through the fractional distillation of air. After the air is purified, it is liquefied under pressure and cooling, and the components in the air are separated by different boiling points. Instantaneous direct contact of liquid nitrogen with human skin is not a problem, but frostbite is irreversible after 2 seconds. Therefore, many are used for liquid nitrogen cooling and preservation.liquid nitrogen equipmentThe use of

       Liquid nitrogen equipment is suitable for high-value-added foods such as fresh produce, seafood, fish, shrimp, meat, and medicinal materials. Suitable for single-freezing (IQF) and plate freezing, suitable for internal testing, development, and small-batch production; small footprint and low energy consumption. In actual production, due to differences in food and processes, actual capacity may be higher than preset capacity. There are more than 10 different sizes and processing capacities for customers to choose from flexibly.

      Liquid nitrogen equipment is suitable for large-scale, continuous, low-labor-intensity, large-area industrialized production mode for high-value-added food production lines, such as processing fish, shrimp, seafood, river fresh, fresh, meat products, high-end fruits, seasoning packs, out-of-season fruits, medicinal materials, etc. The rapid freezing of large foods can be combined with other food assembly lines to form an automatic assembly line. The liquid nitrogen equipment uses a SUS304 food-grade conveyor belt, equipped with a frequency conversion speed regulating motor, and the conveying speed can be adjusted flexibly according to different products; the equipment is also equipped with an automatic belt tension adjustment device to ensure stable and long-lasting operation of the food conveyor belt.

      Cryogenic nitrogen production can produce fixed and high-purity nitrogen.liquid nitrogen equipmentThe advantage is that it can be adjusted according to the nitrogen purity requirements, but to obtain nitrogen with the same purity as liquid nitrogen equipment, the efficiency is very low. Using these two nitrogen production methods, obtaining higher purity nitrogen requires more compressed air, and thus more electricity, resulting in higher operating costs. However, for most applications and companies, the purity of cryogenic liquid nitrogen significantly exceeds the specification.