|Capacity||1- 200 NM3/Hr.|
|Technique||Medical PVSA Oxygen Gas Plant|
WE ARE MANUFACTURER OF This PVSA system. This gas generator has an air compressor system with refrigerated type dryer, which supplies the compressed air at 6.0 to 8.0 kg/cm2g to a twin tower PVSA system having composite bed filled with Activated Alumina and special grade of molecular sieves. Activated alumina adsorbs moisture present in the air while molecular sieves adsorb CO2 and nitrogen. Thus, oxygen gas with a purity of around 93+3% is available at the outlet. After a preset cycle time, the towers are switched over through a sequence controller and a set of change over valves. With this, second tower comes into operation and first tower undergoes simultaneous regeneration. The regeneration is accomplished by purging some oxygen gas in reverse direction at atmospheric pressure and thereafter fine regeneration is achieved through vacuum pump. This cycle of towers changeover is repeated infinitely and oxygen gas is continuously available at the outlet.
The pressure in the Adsorbers varies with time and the gas available at the PVSA outlet is taken to a surge vessel to take care of the pressure variations. The gas can be vented out initially through a 3-way valve and after the gas produced becomes of desired quality, it can be fed to the system for end use.