Method for treatment of CS.sub.2 and H.sub.2 S emissions during viscose regeneration
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United States of America Patent
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Aug 18, 1998
Grant Date -
N/A
app pub date -
Oct 30, 1996
filing date -
Oct 30, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to an improved method for producing tubular sausage casings of regenerated cellulose wherein viscose is extruded through an annular extrusion die submerged in an aquarium to form a tubular product and coagulation and regeneration of the tubular product is initiated in said aquarium, continued by spray application of an intermediate regenerating solution in an intermediate regeneration zone after the tubular product has exited the aquarium, and completed in one or more coagulation/regeneration baths which includes the step of heating the tubular product to a temperature above the boiling point of carbon bisulphide in the intermediate reaction zone.
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