What is a liquid nitrogen machine like? How is the silica gel replaced? What are its advantages?

　　Liquid nitrogen generatorWhat is it like? How is the silica gel replaced? What are its advantages?

　　It continuously generates high-purity nitrogen gas using chromatographic separation. The gas supplied by the air compressor pump is introduced into the molecular sieve, and oxygen, carbon dioxide, water, and Others impurities are removed by the molecular sieve. Only nitrogen gas is allowed to pass through the molecular sieve into the gas storage tank. After adjusting the appropriate pressure and flow rate, it can be used directly. This is the working principle of the liquid nitrogen generator.

　　I.Liquid nitrogen generatorTechnical Advantages

　　1. Simple operation of the liquid nitrogen generator

　　It saves the labor and pain of transporting cylinders. Simply turn on the power switch to generate nitrogen gas; it can be used continuously or intermittently. The nitrogen volume is stable and does not decay.

　　2. High Technology

　　The electrolytic cell adopts a vertical single-layer double cathode. The new membrane separation technology uses a PCA carrier and noble metal catalyst in the catalyst layer, which improves the catalytic efficiency of the electrolytic cell, resulting in high output and high nitrogen purity. After more than 100 hours of high-voltage, high-current aging test, the performance and working state of the electrolytic cell are very stable.

　　3. Low Nitrogen Humidity

　　The laboratory liquid nitrogen generator uses high-molecular-weight permeation separation technology and an effective dehumidification device to reduce the original humidity and automatically drain after shutdown. Using metal polymer dehumidification and two-stage adsorption, the nitrogen purity is significantly improved.

　　4. Program Control

　　The machine control system uses a chip. All work processes are completed by program control. Automatic constant pressure, constant current, and nitrogen flow rate can be fully automatically adjusted according to the Applications, 0-300ml/min.

　　5. Three-stage Catalysis

　　In addition to the secondary catalyst in the electrolytic cell, there is another type of three-stage catalyst. The catalyst is a new type of noble metal, so the oxygen content of the output nitrogen is less than 3ppm.

　　II. After using the liquid nitrogen generator for a period of time, it is found that the silica gel in the drying tube changes color from bottom to top. When it exceeds a certain height, the silica gel needs to be replaced. The process is as follows:

　　1. Rotate the dry cover in the direction of the picture until it is fully rotated. Do not do this if you are under pressure.

　　2. Remove the inner tube of the main tube upwards, remove the cotton swab, and pour out the silica gel.

　　3. Add new (or dry) silica gel, do not exceed the small vent hole near the nozzle. Cover with cotton, cotton yarn or other sundries, do not bury it in the end face of the drying nozzle (otherwise it will not leak). Then, place the inner tube into the outer tube of the drying tube.

　　4. Tighten the cover of the drying tube, check for leaks with soapy water, and then start the machine.

 5. The replacement method for activated carbon is the same as for silica gel.

　　Liquid nitrogen generatorIt has the following advantages:

　　1. Short freezing time, large output per unit time, high efficiency, suitable for continuous food processing.

　　2. Long preservation time, good food quality, low dry consumption, and good preservation of food freshness;

　　3. Low energy consumption for the same output, small cold loss, and low operating costs;

　　4. Low investment, saving more than 30% compared to traditional cold storage freezing;

　　5. During ultra-low temperature freezing, bacteria are generally killed or their reproduction is stopped;

　　6. It has a high-temperature sterilization function, making it safer and more hygienic.