Use of briquetted and unbriquetted pulp and paper mill sludge in a hog fuel boiler: Burning tests

Technical Report · Sun Jul 30 04:00:00 EDT 1989

OSTI ID:6951740

The objectives of this study were to compare both technically and economically two techniques for processing and burning sludge from the waste treatment facilities. The first method was to use a screw press to dewater the sludge from 2--3% solids to about 45% solids, then incinerate it. The second technique was to take the dewatered sludge, briquette it, dry the briquettes to at least 80% solids, and then incinerate the dried briquettes in the boiler. Two different screw presses, one from FKC America and the second from Stord Bartz, were used for the dewatering tests. Both presses appear, on the pilot scale, to be capable of sufficiently dewatering the sludge. Conveyor drying tests were conducted by C. G. Sargent's Sons, Inc., on both the bulk and briquetted sludge. This drying method appeared to be suitable for this material, with required bed areas varying around 7--10 ft{sup 2}/100 lb/hr, depending on the bed thickness and whether or not the sludge was briquetted, with the briquettes generally drying less efficiently. Laboratory burning tests were conducted prior to full-scale boiler tests. The heating values of the sludge, bark, and broke were determined, and the resultant ash analyzed for a variety of elements. 8 refs., 30 figs., 27 tabs.

• Research Organization: Wisconsin Dept. of Administration, Madison, WI (USA). Energy Bureau; Thilmany Pulp and Paper Co., Kaukauna, WI (USA); Sell (N.J.) and Associates, Inc. (USA); Doshi and Associates, Inc. (USA); Wisconsin Univ., Green Bay, WI (USA); Feeco International, Inc., Green Bay, WI (USA)
• Sponsoring Organization: WIDOA
• OSTI ID: 6951740
• Report Number(s): WEB/RR-644; ON: TI90011569
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090900 -- Biomass Fuels-- Processing-- (1990-)
091000 -- Biomass Fuels-- Properties & Composition-- (1990-)
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
AEROSOL WASTES
ASHES
BIOMASS CONVERSION PLANTS
BOILERS
BRIQUETTING
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COMBUSTION
COMPARATIVE EVALUATIONS
CONTROL
CONVEYORS
DOCUMENT TYPES
DRYING
ECONOMICS
ENVIRONMENTAL EFFECTS
EQUIPMENT
FABRICATION
FLY ASH
HAULAGE EQUIPMENT
INCINERATORS
INDUSTRIAL PLANTS
INDUSTRY
MATERIALS HANDLING EQUIPMENT
MOLDING
OPERATION
OXIDATION
PAPER INDUSTRY
PERFORMANCE
PROCESS CONTROL
PROGRESS REPORT
RESIDUES
SLUDGES
SOLID WASTES
THERMOCHEMICAL PROCESSES
WASTE PROCESSING PLANTS
WASTE PRODUCT UTILIZATION
WASTES
WOOD PRODUCTS INDUSTRY
WOOD WASTES