1. Pressure swing adsorption of PSA for nitrogen production
Pressure Swing Adsorption (PSA) is a nitrogen equipment designed and manufactured by pressure swing adsorption technology with clean compressed air as raw material and physical method. Nitrogen making machine uses imported carbon molecular sieve (CMS) as adsorbent and adopts pressure swing adsorption principle at room temperature to separate air to produce nitrogen with different purity. 2. Principle of PSA
C molecular sieves can absorb both oxygen and nitrogen in air at the same time, and their adsorption capacity increases with the increase of pressure, and there is no significant difference in the equilibrium adsorption capacity of oxygen and nitrogen at the same pressure. Therefore, it is difficult to separate oxygen and nitrogen effectively only depending on the change of pressure. If the adsorption rate is further considered, the adsorption characteristics of oxygen and nitrogen can be effectively distinguished. The diameter of oxygen molecule is smaller than that of nitrogen molecule, so the diffusion rate is hundreds of times faster than that of nitrogen. Therefore, the adsorption rate of carbon molecular sieve for oxygen is very fast, reaching more than 90% in about 1 minute. At this time, the adsorption capacity of nitrogen is only about 5%, and the content of oxygen and nitrogen in the air is 21% and 78%, respectively. The remaining nitrogen molecules are enriched at one end of the adsorber to form the product nitrogen into the nitrogen process buffer tank.
3. Characteristics of PSA Nitrogen Making Equipment for Carbon Molecular Sieve
1) Nitrogen production is convenient and fast:
Advanced technology and unique air distributor make the air distribution more uniform and make efficient use of the adsorption efficiency of carbon molecular sieve. The qualified product nitrogen can be provided in about 10 minutes.
2) More economical than other nitrogen supply methods:
_PSA process is a simple method of nitrogen production. Air is used as raw material and energy consumption is only the power consumed by air compressor. It has the advantages of low operation cost, low energy consumption and high efficiency.
3) The design of Mechatronics realizes automatic operation:
_Imported PLC controls full automatic operation, adjustable nitrogen flow pressure and continuous display, which can realize unattended operation.
4) Wide range of applications:
_Protective gas in metal heat treatment process, nitrogen-filled purifying purging and explosion-proof of gas in chemical industry and various storage tanks and pipelines, oxidation-proof and explosion-proof gas in rubber and plastic products, nitrogen-filled and oxidation-proof packaging in food industry, fresh-keeping and prolonged shelf life, and container covering in purification process and preparation process of beverage industry Cover gas, nitrogen-filled packaging and containers in pharmaceutical industry, nitrogen-filled and oxygen-exhausted, protective gas for brazing and reflow welding of electronic components and semiconductor production processes in electronic industry, etc.
6) Technical indicators:
_Flow: 5-1000Nm3/h
_purity: 95% - 99.9995% (no oxygen content, high purity nitrogen prepared by two-step method)
Dew Point of_: <40 ~70 ~
_pressure: <0.1~0.8Mpa adjustable
4. System Use
The special nitrogen machine for food industry is suitable for green storage of grain, nitrogen-filled packaging of food, vegetable preservation, liquor sealing (canning) and storage, etc.
_Pharmaceutical industry special nitrogen machine is mainly used in drug production, storage, packaging and other fields.
_Special nitrogen machine for electronic industry is suitable for semiconductor production and packaging, SMT, LED, LCD, lithium battery production and other fields. Nitrogen machine has the characteristics of high purity, small volume, low noise and low energy consumption.
_Vehicle-mounted mobile nitrogen-making vehicle is suitable for oil and gas industry in the fields of exploitation, pipeline blowing, replacement, emergency rescue, flammable gas, liquid dilution and so on. It is divided into low pressure, medium pressure and high pressure series. It has the characteristics of strong mobility and movable industry.
