To meet the growing demand for the supply of cost effective industrial gas, Imtek Cryogenics is expanding its product line and now offers a new line of gas purifiers to customers that have analytical intruments. The nitrogen purifiers can also be used for solvent evaporation as well as supplying dry nitrogen to analytical instruments such as Gas Chromatography, Liquid Chromatography – Mass Spectrometer, Inductively Coupled Plasma Spectroscopy, Thermal Analysis, Total Organic Carbon. Having your own nitrogen generator is more safe alternative to high-pressure nitrogen bottles or liquid, and you will always have nitrogen available at a reduced cost.
Imtek Cryogenics NG series Nitrogen generators (ICNG) use the PSA (Pressure Swing Adsorption) technology to produce continuous pure Nitrogen flow at working pressure with no additional equipment. ICNG series nitrogen generators provide an on-demand, continuous source of nitrogen gas in complete autonomy, producing only the requested amount of gas with no waste. Imtek Cryogenics offers three models depending on the purity and flow rates. NG1 & NG2 with an internal compressor just need power to supply pure nitrogen.
The atmospheric air is pressurized by a compressor and fed to a buffer tank. The pressurized air in the buffer tank, then, directed to the filter group which are located behind the cryoplant in order to separate water droplets and microscopic contaminants from the air. After this first filtering step, remaining moisture in the air is removed by the internal air dryer unit.
The treated dry and clean air with a dew point of -70 °C flows to one of the adsorber beds of the Pressure Swing Adsorption (PSA) module. The carbon molecular sieve in PSA beds adsorbs the oxygen and carbon dioxide molecules in the dry air. After the saturation of the first adsorption bed, feed flow process valves are switched to the second adsorption bed. Then, the first adsorption bed is depressurized rapidly and purged to remove the adsorbed oxygen. By continuing the switching between the two adsorption beds, a constant flow of pure nitrogen gas is achieved. Therefore, by the PSA technology utilized in cryoplants, nitrogen gas at the correct purity level is provided to the buffer tank.