Process and apparatus for controlling argon column feedstreams
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United States of America Patent
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Nov 15, 1988
Grant Date -
N/A
app pub date -
Jul 16, 1987
filing date -
Jul 16, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to methods and apparatus for controlling a process for the separation of air to obtain oxygen, argon, and nitrogen products, and more particularly for controlling the composition of the feedstream to a column for producing crude argon. The nitrogen content of the feedstream is directly analyzed in real time and maintained within a preselected range. The results of the analysis is used to control the operation of the process, for example, by adjusting the reflux or product withdrawal rates. Argon production is thereby maximized without risking a dumping phenomenon in the crude argon column.
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