Storage applications and hydrogen charging stations require oil-free compressors to maintain the purity of the gas.This sets very high requirements for piston rings, sealed envelopes and materials.
According to Cook Compression, hydrogen is a light gas with very small molecules so it is difficult to seal. The prevention of leakage depends heavily on the piston ring and the sealed box made of dedicated materials. The piston ring design company has special geometry to create complex lines to limit gas passing, combining hydrogen-resistant metal and new types of polymers reducing wear.
According to Technetics, the membrane compressor is the standard choice for electronic hydrogen and pharmaceutical products because it does not cause dirt.The company finds that problems often start at contact areas such as the membrane clamp and sealed edges, and internal leakage silently reduces power.
Oil and Gas News (Cook Compression), Technetics. Article compiled and reinterpreted by SNS-VN; brand name belongs to the owner.