Ketchikan Pulp's hog-fuel-boiler energy retrofits

Journal Article · Sun Sep 01 00:00:00 EDT 1991 · Tappi; (United States)

OSTI ID:6991271

Sweet, R N ^[1]

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1. Howard Needles Tammen and Bergendoff, Bellevue, WA (United States)

Ketchikan Pulp Co. (KPC) is a 600-b.d. Ton/day sulfite mill located 679 Alaska Airlines miles north of Seattle on the island of Revillagigedo. Designed to produce 860 psig steam at 825[degrees]F, each of the boilers is fired off a combination of No. 6 oil and waste wood. This paper reports that in 1984, a rotary bark dyer was installed in series between the existing boiler I.D. fans and the boiler stack. This system consists of a direct-contact rotary dryer unit followed by an additional I.D. fan and four cyclone separators. The combustion gases then return to the existing stack by way of the existing I.D. fan discharge ducting. This unit was designed to operate at a flue-gas inlet temperature of 550[degrees]F and maintained a discharge temperature of 300[degrees]F. The unit was designed to process approximately 360 units of hog fuel per day, drying it from 60% moisture to 40% moisture in a single-pass operation.

• OSTI ID: 6991271
• Journal Information: Tappi; (United States), Vol. 74:9; ISSN 0039-8241
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
42 ENGINEERING
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
REFUSE-FUELED BOILERS
RETROFITTING
SPENT LIQUORS
WASTE PRODUCT UTILIZATION
DESIGN
ENERGY CONSERVATION
FUEL OILS
REFUSE DERIVED FUELS
STEAM GENERATION
WOOD WASTES
BOILERS
FUELS
INDUSTRIAL WASTES
LIQUID FUELS
LIQUID WASTES
PETROLEUM PRODUCTS
SOLID WASTES
WASTES
200103* - Fossil-Fueled Power Plants- Waste-Fueled Systems
421000 - Engineering- Combustion Systems
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
320304 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization