Demonstration of a new energy-saving pulp and paper industry sludge-disposal system. Final report
The net energy cost of drying pulp and paper mill sludge with use of Basic Extractive Sludge Treatment (BEST), a solvent dewatering process, is determined by the demonstration program. Additionally, this cost was compared with the cost of conventional sludge incineration to demonstrate obtainable energy savings through the use of the BEST process. The dry solids were shown to have a useful heating value (6853 Btu/lb, D.B.) and to burn well in both a Combusticlone burner and in a fluidized-bed reactor. A mill-size burner will require a fuel feeder that supplies solids at predictable rates. The drying model was shown to need about 50% less energy to dispose of the pulp mill sludge than is needed by the current practice of mixing in a hog fuel incinerator. For a 50-TPD plant, this energy savings is equivalent to 8000 barrels of fuel oil yearly. With credit for the heating value (as steam) of the solids produced, the net processing cost of a BEST drying system was shown to be about $10/ton of input solids.
- Research Organization:
- Resources Conservation Co., Renton, WA (USA)
- DOE Contract Number:
- ET-78-C-07-1687
- OSTI ID:
- 5838458
- Report Number(s):
- IDO-1687-1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
29 ENERGY PLANNING
POLICY AND ECONOMY
42 ENGINEERING
PAPER INDUSTRY
ENERGY CONSERVATION
SLUDGES
WASTE DISPOSAL
CALORIFIC VALUE
CHEMICAL COMPOSITION
DRYING
WASTE PROCESSING
COST
COMBUSTION
COMPARATIVE EVALUATIONS
DATA COMPILATION
DEMONSTRATION PLANTS
EXPERIMENTAL DATA
INCINERATORS
NET ENERGY
NUMERICAL DATA
PROCESSING
SOLID WASTES
STEAM
TABLES
WASTE HEAT UTILIZATION
WATER REMOVAL
CHEMICAL REACTIONS
COMBUSTION PROPERTIES
DATA
DATA FORMS
ENERGY ANALYSIS
INDUSTRY
INFORMATION
MANAGEMENT
OXIDATION
REMOVAL
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PRODUCT UTILIZATION
WASTES
WOOD PRODUCTS INDUSTRY
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes
291000 - Energy Planning & Policy- Conservation
420900 - Engineering- Waste Processing Plants & Equipment- (-1989)
290100 - Energy Planning & Policy- Energy Analysis & Modeling