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IN THE ELECTRIC BOILER PLANT OF THE
ONTARIO PAPER COMPANY
i
HE Ontario Paper Company gram, a new steam plant was con
Tat Thorold, Ontario, was structed, which included the in originally built in 1912 by novation of three electric steam the owners of the Chicago Trgibenerators, each rated at 30,000
une. The Tribune takes all the kw. and capable of generating ap
paper made by the Ontario Paper proximately 100,000 lbs. of steam
Company, and although it is a per hour. A major portion of the
large mill, it cannot keep up with steam generated is delivered di
the demand. In only one year was rectly to five back-pressure tur
the output sufficient to meet the bines located adjacent to the paper
needs of the presses of the Chicago machines. Four of these are. El
Tribune; in some years the mill liott geared turbines which have
was able to supply only 66% been in constant 24-hour-a-day
of the paper required. Five paper service for from 10 to 16 years.
machines are installed.
Exhaust from the turbines goes
In a recent modernization pro directly to the paper dryers at 5 to
15 lbs. pressure. A large quantity of steam is also used for cooking sulphite pulp and for general heat ing purposes.
With the installation of the elec tric boilers, steam pressure was raised from 140 lbs. to 200 lbs. and the paper machine turbines were renozzled for the higher pres sure.
In connection with the new pow er plant program, an Elliott flash type deaerator of 300,000 lbs. per hour capacity was installed. The ability of the flash type deaerator to perform satisfactorily on what
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