An Experimental Technology of Drying and Clean Combustion of Biomass Residues

Abstract

In the present study, the drying and combustion of solid biomass residues are developed. The combustion of the residues inside a boiler and a stove have been done. We used three types of solid biomass residues (i.e., cork, pine pellet and olive pomace). These residues have been dried by using screw dryers. Experimental installation has been used for a series of thermal drying tests of the residues by measuring the temperature inside the dryer and their moisture contents. A laboratory screw dryer was used to dry the olive pomace by using hot gases from a chimney of a biomass stove. Elemental and proximate analyses, as well as the higher heating value (HHV) of the raw materials, have been determined. In the experiments, moisture content variation of the residues and drying temperatures are obtained. These residues are dried several times under the same drying conditions to achieve the final moisture content rate. On the other hand, the temperature of combustion chamber of the boiler has been measured under different conditions. It has been found that by increasing hot gas temperature, the drying rate is increased. Finally, it has been found that the drying of these residues increases their calorific values and reduces the emissions.

Spatial Analysis of Residual Biomass and Location of Future Storage Centers in the Southwest of Europe

“…With regard to environmental conditions, an appropriate management of the vegetation in the area must be considered. Therefore, as a first step, a selective tree extraction should be carried out [48]. For this reason, the annual growth of the arboreal species and their extraction is explained, based on pruning, cleaning and silvicultural activities, which in any case should not harm the flora species.…”

Development of a Novel Shaft Dryer for Coal-Based Green Needle Coke Drying Process

“…A constant feeder discharges the wet green cokes to a belt conveyor, through which the wet green cokes are transferred to the top hopper of the shaft dryer at a constant speed. Next, the wet green cokes are fed into the dryer uniformly to exchange heat with the medium-temperature gas in an energy-efficient, direct-contact, and counter-current way [37]. The discharging unit at the bottom of the shaft dryer controls the discharge speed and loosens the green cokes to prevent blocking the dryer.…”

Numerical Simulation of the Cleaning Performance of a Venturi Scrubber

“…Many authors have studied the gasification process of biomass to produce a clean gas that is combustible for energy production, such as Al-Kassir et al [35]. The use of biomass residues as non-pollutant fuels in combustion processes has an economical benefit as well as helping in the social development of rural zones as it decreases the environmental impact by eliminating the remnants and decreasing the emissions of pollutants to the atmosphere as deduced by Awf Al-Kassir et al [36]. They developed a study on the drying and combustion of solid biomass residues and their combustion inside a boiler to produce clean combustible gas.…”