On-line analysis of process gas during the production of ketene
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United States of America Patent
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Sep 4, 2001
Grant Date -
N/A
app pub date -
Apr 27, 2000
filing date -
Aug 6, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a process for the on-line analysis of a reactive gas mixture, in particular of a gas mixture comprising ketene and/or diketene and/or acetic anhydride and/or acetic acid, which gas mixture is situated in a vessel, which comprises expanding a portion of the gas mixture instantaneously into a sampling line via a probe which is integrated into the vessel and which has an orifice whose clear cross sectional area is less than or equal to 1 mm.sup.2 and feeding it to a mass-spectrometric analysis.
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