Woodchip drying in a screw conveyor dryer

Abstract

Moisture content of raw biomass materials is a crucial parameter for system efficiency and the main purpose of the drying process is to reduce moisture content of the wet biomass. In this study, the drying characteristics of woodchip dried in a screw conveyor dryer had investigated experimentally. The experimental results demonstrated that drying rate had increased with the increasing drying air temperature and flow rate; however, the amount of volatile organic matters in the sample has kept constant. Furthermore, the results have showed that the best drying conditions in this study is 30 m 3 /h drying airflow rate, 200 C drying air temperature, and co-current dryer type. With these conditions, moisture content of woodchip decreased from 60% to 27% (wet basis, mass %). V C 2012 American Institute of Physics.

A review of Drying Technologies for Refuse Derived Fuel (RDF) and Possible Implementation for Cement Industry

“…Kaplan and Celik [20] carried out wood chip drying by using a similar technology and managed to reduce the moisture content from 60 to 27 wt.% under optimum conditions: 30 m 3 /h drying air flow rate, 200 °C drying air temperature and co-current air/feed configuration.…”

Modelling of powder hydrodynamics in a screw reactor

“…Giving a good heat transfer [5,6], a flow behaviour close to a plug-flow reactor in a closed vessel, the screw reactor is a good candidate for handling complex and exothermic (or endothermic) reactions [7][8][9]. For instance, screw reactors can be used for biomass pyrolysis [10], biomass hydrolysis [11], solid drying [6,12], etc.…”

A Theoretical Analysis and Experimental Study of a Coupled Screw-Pneumatic Conveyor for Chopped Cornstalks

“…However, its transportation performance is unstable due to the characteristics of cornstalk, such as light density, high viscosity and poor fluidity (Wulantuya et al, 2019a). To date, the study of screw conveyors for fibrous agricultural materials has mainly focused on equipment for harvesting and processing (Kaplan et al, 2012;Jiang et al, 2013;Feng et al, 2015;Nachenius et al, 2015a andNachenius et al, 2015b;Chamberlin et al, 2018). Our team previously investigated the screw conveying process of chopped cornstalk and found that the biomass material underwent overall screw-type motion under the joint effects of below-normal thrust and tangential friction of the screw blades and axial and circumferential friction of the screw shaft and interior casing (Wulantuya et al, 2015(Wulantuya et al, , 2016(Wulantuya et al, and 2019a.…”