Working up of the residual gases resulting from the production of cyanuric chloride
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United States of America Patent
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-
Feb 28, 1984
Grant Date -
N/A
app pub date -
Oct 3, 1979
filing date -
Oct 5, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The residual gases obtained in the production of cyanuric chloride having a pressure of 1-5 bar (absolute) preferably 1-4 bar, are worked up by leading them into the lower portion of a column, reacted in the column with at least the equivalent amount of hydrogen cyanide to form cyanogen chloride and led in countercurrent flow to the water charged to the upper portion of the column whereupon the aqueous solution of cyanogen chloride formed is withdrawn from the lower portion of the column and preferably is returned into the production portion of the plant for recovery of the cyanogen chloride while the purified waste gas of the column leaves in the upper portion of the column.
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