Chemical vapor trap and vacuum drying system including same
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United States of America Patent
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Mar 1, 1994
Grant Date -
N/A
app pub date -
Nov 23, 1992
filing date -
Nov 23, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A chemical vapor trap for selectively removing harmful corrosive contaminants, such as water and acetic acid vapors, from an evacuating vapor phase in a vacuum drying system is provided. The chemical vapor trap includes a condenser section effective to convert a high temperature incoming heated sample liquids and heated vapor phase into a liquid phase condensate and a relatively lower room temperature stripped vapor phase. Liquid condensate including water and acetic acid are trapped below a chemical blanket or sealing layer which prevents re-vaporization or boiling of removed corrosive volatile contaminants from the vapor phase entering the vacuum pumps, promoting improved pump performance and extend pump service life.
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