Process for nitrogen enrichment

Details Process for nitrogen enrichment Process for nitrogen enrichment

1983-07-01

1985-01-22

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 58, 55 62, 55 68, B01D 5304

Patent

active

044949669

ABSTRACT:
In a pressure swing adsorption process for the production of nitrogen enriched product gas from air, when the process is halted during a pressure equalization step, that is, with valves open to permit the flow of gas from one vessel to a second vessel, then the gas remaining in the vessels is exhausted to atmosphere by opening a further valve. This results in rapid return to the required purity of nitrogen enriched product gas on start-up of the process. Preferably, subsequent to opening the further valve, another valve is opened, thereby permitting nitrogen-rich product gas from a reservoir to flow through the vessels, thereby purging said vessels with nitrogen enriched product gas.

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patent: 4348213 (1982-09-01), Armond
patent: 4376639 (1983-03-01), Vo
patent: 4376640 (1983-03-01), Vo
patent: 4415340 (1983-11-01), Knoblauch et al.

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