Holtec Gas Systems
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How Does a Gaseous Nitrogen Generator Work?
A nitrogen generator works by separating nitrogen molecules from the oxygen molecules in compressed air. Atmospheric air is compressed by an air compressor and passed through a hollow fibre membrane, filtering out parts of air, mostly oxygen and collecting extremely pure nitrogen gas.
Holtec Gas Systems use two different types of Nitrogen Generation: Pressure Swing Absorption(PSA) as well as Membrane Application.
In a Pressure Swing Absorption nitrogen generator, compressed air is drawn from the atmosphere and directed into one absorbing mechanism. Under pressure, oxygen in the compressed air gets "stuck" in the pores of the carbon-molecular sieve (CMS), allowing the remaining constituents (mostly nitrogen) to pass through the system unhindered.
Membrane Nitrogen Generators separate nitrogen from atmosphere by passing compressed air through a permeable membrane. The process relies on the principle of selective gas permeation. Each gas has a different permeation rate, so as the compressed feed air stream passes across the membrane, gases with faster permeation rates like 02 and CO2 are released back into the atmosphere as waste gas
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