The aim of the paper is to highlight importance calorific properties softwood biomass. presents caloric power and ash content, important in assessment wood Biomass, form wood, was will remain an combustible material. value content for spruce 3.8% 4.2% fir. These values are within international standards. Wood biomass, as a material can provide energy need population at reduced price. combustion...

The air quality in Sweden is strongly influenced by the geographic location and the climate in the northern part of Europe. During wintertime, the temperature is often below zero degree and rain and snow are common which cause slippery roads and needs for house heating. For anti-skid treatment, studded tyres and sand are frequently used which create a lot of road wear particles. Residential woo...

Three species of biomass origin (straw pellets, olive cake and wood pellets) and two coals from different countries (Coal Polish and Coal Colombian) have been studied to understand the fate of their ash forming matter during the combustion process and to investigate the influence of co-firing biomass with coal. Three different approaches to investigate the ash behaviour were employed: (1) chemi...

Experiments were conducted to study CCA-treated wood combustion over a range of temperature and oxygen concentrations with a view to understanding the factors affecting energy and metals recovery from waste treated timber. CCA-treated wood was burned in a furnace at temperatures from 400 to 940 degrees C and oxygen concentrations between 5 and 21%. The ash and condensed volatiles were digested ...

An analytical model of a spreader-stoker wood waste fired boiler has been developed for pre­ dicting the size of the largest particle which can be entrained by the upward motion of the furnace gases. This model is based on an entrainment model which equates particle in-situ settling velocity to furnace gas velocity and uses a stirred reactor mod­ el to evaluate furnace conditions. The effects o...