Main > PAPER & PULP > Environmental Protection > Effluent Treat. > Sulfur Compd Redn

Product USA. I.

PATENT ASSIGNEE'S COUNTRY USA
UPDATE 06.99
PATENT ASSIGNEE This data is not available for free
PATENT CLAIMS Method for treat paper mill condensate streams contg H sul
fide, volatile mercaptans & Me sulfides consisting
- Contacting flowing paper mill condensate stream having
pH > 6.5 & pressure > atm. pressure with gas. CO2 at pressu
re higher than pressure of condensate stream sufficient to
produce a CO2-enriched condensate stream with pH < 6.5
- Reducing the pressure of enriched condensate in flash
vessel to pressure sufficient to cause substantial portion of
H sulfide & mercaptans to pass from CO2-enriched stream
to gas phase
- Conducting gas phase to an absorption tower or recovery
boiler
PATENT PHOTOCOPY Available on request

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