Hog fuel drying using vapour recompression

Conference · Thu Dec 01 04:00:00 EST 1983 · Alternative Energy Sources; (United States)

OSTI ID:6205128

Azarniouch, M K; Sayegh, N N

Hog fuel is a broad term used by the forest products industry to describe all types of wood residues that are used as fuel. These can be bark, wood chip rejects, sawdust, shavings, etc. The moisture content of these residuals depends mainly on their source and on the conditions of storage and could range from 50 to 70% (wet basis). The introduction of the significant amounts of water contained in the hog fuel impairs the efficiency of operating a hog-fuel boiler by: (i) reducing the net heating value of the fuel, (ii) increasing the particulate emissions caused by incomplete combustion, (iii) requiring higher air flows to maintain combustion, (iv) decreasing the rate of combustion, and (v) reducing the heat flux as a result of lower flame temperatures. Several drying systems are commercially available for the drying of hog fuel and most of them use the waste heat in the flue gas as the source of heat for the drying operation. Commercial flue gas dryers are rotary, cascade or flash type. However, all of these suffer from the same inherent disadvantages.

• Research Organization: Pulp and Paper Research Inst. of Canada, Pointe Claire, Quebec
• OSTI ID: 6205128
• Report Number(s): CONF-831205-
• Conference Information: Journal Name: Alternative Energy Sources; (United States)
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090400* -- Solid Waste & Wood Fuels-- (-1989)
140504 -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
AIR FLOW
BOILERS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION CONTROL
COMBUSTION PRODUCTS
COMBUSTION PROPERTIES
COMPRESSION
CONTROL
DESIGN
DRYERS
DRYING
FLUID FLOW
GAS FLOW
GASEOUS WASTES
HEAT FLUX
MOISTURE
OXIDATION
SOLID WASTES
THERMOCHEMICAL PROCESSES
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES
WOOD WASTES