Demonstration of a new energy-saving pulp and paper industry sludge-disposal system. Final report

Technical Report · Tue Aug 01 04:00:00 EDT 1978

DOI:https://doi.org/10.2172/5838458· OSTI ID:5838458

Peters, H. H.

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)
• OSTI ID: 5838458
• Report Number(s): IDO-1687-1
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
290100 -- Energy Planning & Policy-- Energy Analysis & Modeling
291000 -- Energy Planning & Policy-- Conservation
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
42 ENGINEERING
420900 -- Engineering-- Waste Processing Plants & Equipment-- (-1989)
CALORIFIC VALUE
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION PROPERTIES
COMPARATIVE EVALUATIONS
COST
DATA
DATA COMPILATION
DATA FORMS
DEMONSTRATION PLANTS
DRYING
ENERGY ANALYSIS
ENERGY CONSERVATION
EXPERIMENTAL DATA
INCINERATORS
INDUSTRY
INFORMATION
MANAGEMENT
NET ENERGY
NUMERICAL DATA
OXIDATION
PAPER INDUSTRY
PROCESSING
REMOVAL
SLUDGES
SOLID WASTES
STEAM
TABLES
THERMOCHEMICAL PROCESSES
WASTE DISPOSAL
WASTE HEAT UTILIZATION
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTES
WATER REMOVAL
WOOD PRODUCTS INDUSTRY