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boilers first undergo particulate removal to collect magnesium from the fly ash in the form 

 of magnesium oxide (MgO). A small percentage of makeup MgO is combined with 

 recovered MgO and is used as a base to recover sulfur dioxide from cooled flue gas in a 

 series of absorption towers 



The recovered chemicals, which have been convened to magnesium bisulfite in this 

 process, become a weak raw acid from which cooking liquor is made by fortification with 

 sulfur dioxide Primary fortification is accomplished by burning molten sulfur to produce 

 sulfur dioxide and absorbing it into weak acid in a packed tower Final strengthening of 

 the cooking liquor is accomplished through absorption of sulfijr dioxide under pressure in 

 an accumulator system using relief gases from the digesters The entire recovery process 

 is essentially a closed loop system with only water and make up chemicals being added. 



In addition to the steam produced by the recovery boilers, steam is supplied to the process 

 by two multi-fuel power boilers and one oil fired boiler Bark, sawdust, knots, primary 

 and secondary sludges and oil are combusted in the multi-fliel boilers which are equipped 

 with electrostatic precipitators to control air emissions The oil-fired package boiler has a 

 wet scrubber for sulfur dioxide removal and a low NOx combustion system 



Steam produced from the boilers is used throughout the manufacturing process and is also 

 used to generate electricity for the operation A peak total of 38 megawatts of electricity 

 can be produced fi^om three turbine generators. Which, typically generate 28 megawatts 

 of electricity for process needs. 



Dissolving-grade sulfite pulp is a very specialized, high value product. It is an extremely 

 pure form of cellulose fiber that has special properties because of the wood species used 

 and the purification provided by the processes employed at the mill The product is used 

 throughout the world to manufacture a wide variety of high- value products including the 

 following. 



Viscose Rayon—Clothing, upholstery, curtains, carpeting, cellophane/packaging and 

 sponges. 



Cuprammonium Rayon—Artificial kidneys, high-fashion clothing, women's 

 undergarments, suit lining and non-wovens such as disposable protective clothing. 



Nitro Cellulose— Dice, encapsulated electronic equipment and other moldable products, 

 high-quality high-speed printing inks, explosives and high quality lacquers. 



Microcrystalline Cellulose— Pill and caplets, dietary bakery goods, emulsifiers such as 

 sandwich spreads and salad dressings, low-calorie ice creams and cosmetics 



Carboxymethyl and Ethyl Cellulose-Emulsifiers Tor paints and coatings 



