Komax steam heaters replace old style motor driven peg mixers at one-third the cost for
handling medium consistency stock. There are no motors, seals or gearboxes to repair or
replace. They now find service for heating green liquor, black liquor and white water at
flow rates in excess of 5000 gpm.
Direct Injection Steam Heating of White Water.
International Paper, Augusta, Georgia
Installed March, 1998
Customer Problem: Paper Machine Breaks and Rejects
Far too frequently, rejects and breaks on the paper
machine plagued International Paper of Augusta, Georgia. Such a
problem resulted in lower-grade paper and unscheduled downtime.
The Komax Solution: Plant engineers decided to
increase the temperature of the white water flowing to the paper
machine. This would decrease the viscosity of the adhesive chemicals
in the water and lead to better drainage on the paper machine and
stronger quality paper.
International Paper contacted Komax Systems to
install a system to heat their white water. Komax provided the
Augusta mill with a 14-inch diameter direct injection steam heater.
This steam heater now operates 24 hours a day, and plant engineers
estimate that mill savings will be $1,000,000 per year due to this
heater installation.
**NOTE: Due to the
outstanding success of the Komax Heater on Paper Machine #1,
International Paper has duplicated this system on Paper Machine #2.
Projected savings on this heater, installed in July 1999, is
$3,000,000.00 per year.
Heater Specifications:
White Water Flow Rate
3,500 gpm
Starting Temperature 95
degrees F
Final Temperature 135
degrees F
Steam Flow 60,000 lbs/hr
Steam Pressure 175 psig
Let Komax application engineers help you with your mixing problem. Contact
us by fax or by E-mail. We hope to add your mills’ name to our installation list in
1999.
(Click Image for Larger Size)
PAY-BACK IN 60 DAYS
STEAM HEATER AND INSTALLATION
ECF BLEACHING
A major 1100 ton/day U.S mill reported CLO2 savings of $30,000 a month
after installing a Komax steam heater. Their 4.5 percent pulp stock line temperature was
increased to 150 degrees Fahrenheit by a 12 inch Komax heater. The seasonal delta T range
is 25 to 50 degrees F. CLO2 savings for this mill will exceed $2,000,000 U.S. dollars over
the projected life of the Komax steam heater.
Komax Steam Heater Mixes Oxygen
Two major mills in North America have recently installed Komax inline
steam heaters for heating 10% to 12% consistency stock prior to mixing in the oxygen.
Komax engineers suggested "since the steam heater is an improved Komax static mixer
design it will also mix the oxygen with the steam into the pulp stock". The mills
ordered the steam heaters with the Komax oxygen injectors. End results was heated stock
with 100% dispersion of micro fine oxygen bubbles throughout the pulp stock stream. This
saved the cost of a medium consistency mechanical oxygen mixer before the upflow tower. No
moving parts in the Komax heater has removed the worry over unscheduled downtime
associated with mechanical devices. Capital investment and energy savings connected with
these two installations are extremely significant.
More and more mills are reporting outstanding chemical savings after
installing a Komax direct steam heater.
FACT: Heat
improves chemical reaction...
Size selection based on water-like product flow
Calculate Heat Load Factor Q x D T. Q = liquid flow in
USGPM, D = temperature rise ° F
Enter the graph below at the calculated Heat Load Factor.
Move up to steam psia value = psig + 15
Move left to read the minimum
steam heater diameter required.
Calculate steam flow required = Q x D T x 0.43 lb/hr
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