For Instance High Purity nitrogen DX model is introduced in the field of NITROGEN GENERATION PROCESS, As DX Process leads to reduce oxygen content as low as it can i.e. below 5 ppm.
A PSA system is followed by additional purification unit using palladium as catalyst for removal of oxygen & moisture contents upto 1 PPM, Level with mostly desirable reducing constituent hydrogen (adjustable).
The Palladium –Deoxo unit, used industrially ran with additional hydrogen feed, for exothermic reaction.
O2 + 2H2 —– 2H2O
is run with one reactor filled with Palladium Catalyst. The Nitrogen, coming directly from the PSA system with the remaining oxygen, is mixed over mixer with Hydrogen before entering the catalyst reactor. At the catalyst surface the oxygen reacts with hydrogen to produce water and heat. The heat and water have to be removed by a standard water after cooler and gas dryer to required level. The remaining hydrogen concentration in the Nitrogen is around 0.5 to 1% minimum.
The high purity DX-Model finds application in chemical/electronics/metallurgical industries
A typical representation for the plant is shown in the figure below.
FIGURE: N2 PSA WITH DX PLANT
- Metallurgical Industry
- Heat Treatment / Annealing
- Synthetic & Fiber Industry
- Chemical Industries
- Pharmaceutical Industry
1 – 1500 NM³/Hr.
§ Oxygen – 1 PPM
§ Hydrogen – 0.5% or More (Adjustable)
§ Nitrogen – 99.9997%
§ Dew Point – -60°C to -80°C
§ Pressure – 5 ~ 25 Bar