The Government of India explored the feasibility of the conversion of existing nitrogen plants to produce oxygen. Various such potential industries, wherein existing nitrogen plants may be spared for the production of oxygen were identified.
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The process of converting the existing Pressure Swing Absorption (PSA) nitrogen plants for production of oxygen was discussed.
In the nitrogen plants Carbon Molecular Sieve (CMS) is used whereas Zeolite Molecular Sieve (ZMS) is required for producing oxygen.
Therefore, by replacing CMS with ZMS and carrying out few other changes such as oxygen analyzer, control panel system, flow valves etc. existing nitrogen plants can be modified to produce oxygen.
A nitrogen plant modified for the production of oxygen can be either shifted to a nearby hospital or, in case it is not feasible to shift the plant, it can be used for on-site production of oxygen, which can be be transported to hospital through specialized vessels/cylinders.
