Knowledge base: Nitrogen Generating Plant

Angstrom Advanced is the leading supplier of Nitrogen Generators for refinery, petrochemical and other industrial applications. Our services for Hydrogen Generating Plant projects typically include conceptual design, detailed engineering, procurement, fabrication, construction, start-up and operational training. We provide a lump-sum, turnkey solution, handling everything from concept to start-up with our own resources whenever possible.

Membrane Separation Technology


Nitrogen Generators by Membrane Separation is the most common type of nitrogen generator where high nitrogen purity is not a critical requirement. Considering the economic performance, most economically sound is the use of air separation plants for nitrogen generation designed on the basis of hollow-fiber polymer membranes.

If 95%-99.9% pure gaseous nitrogen is required where capacity rate does not exceed 1000 nm³/hr, membrane air separation technology appears to be the most suitable option. Considering the economic performance, most economically sound is the use of air separation plants for nitrogen generation designed on the basis of hollow-fiber polymer membranes.

Membrane air separation technology

The operation of membrane systems is based on the principle of differential velocity with which various gas mixture components permeate membrane substance. The driving force in the gas separation process is the difference in partial pressures on different membrane sides.A hollow-fiber membrane represents a cylindrical cartridge functioning as a spool with specifically reeled polymer fibers. Gas flow is supplied under pressure into a bundle of membrane fibers. Due to the difference in partial pressures on the external and internal membrane surface gas flow separation is accomplished.
Membrane technology is characterized by low power consumption and the absence of moving parts.