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Characterization of drying parameters for solid fuels; Kiinteiden polttoaineiden kuivumis-parametrien karakterisointi

Abstract

Drying of solid fuel particles in hot gases (50 - 200 deg C) is studied both theoretically and experimentally. The measurements are carried out by using a thermobalance reactor constructed for drying and pyrolysis studies of particles up to 30 mm by diameter. The model is based on the solution of the conservation equations for mass and energy. The main parameters affecting the drying rate are: particle size, particle shape, initial particle moisture content, gas temperature and gas moisture content, temperature of the reactor walls and slip velocity. Also, the drying of biomass fuel particles in fixed and moving beds with hot gas or steam is considered both experimentally and theoretically. A single particle drying model is coupled with a model describing heat and moisture transfer in the gas phase of the bed. The model can be used in the dimensioning of the drying system in a larger scale. Other study subjects were the movement of wood and peat particles in a pneumatic dryer, and the drying of a single fuel particle in steam under various pressures. The aim of the research work was to present a review of recent studies on emissions from biomass drying. The work covers the  More>>
Authors:
Impola, R; Saastamoinen, J; [1]  Fagernaes, L [2] 
  1. VTT Energy, Jyvaeskylae (Finland)
  2. VTT Energy, Espoo (Finland)
Publication Date:
Dec 01, 1997
Product Type:
Technical Report
Report Number:
JSP-BIOENERGIA-16(pt.3)
Reference Number:
SCA: 090900; 010300; PA: FI-97:003726; EDB-98:013560; SN: 97001888445
Resource Relation:
Other Information: PBD: 1997; Related Information: Is Part Of Bioenergy research programme. Yearbook 1996. Utilization of bioenergy and biomass conversion; Nikku, P. [ed.]; PB: 208 p.; Bioenergian tutkimusohjelma. Vuosikirja 1996. Bioenergian kaeyttoe ja biomassan jalostus
Subject:
09 BIOMASS FUELS; 01 COAL, LIGNITE, AND PEAT; SOLID FUELS; WOOD; PEAT; DRYERS; DRYING; BENCH-SCALE EXPERIMENTS; DESIGN; MATHEMATICAL MODELS; AIR POLLUTION; WATER POLLUTION
OSTI ID:
567138
Research Organizations:
Jyvaeskylae Science Park, Jyvaeskylae (Finland)
Country of Origin:
Finland
Language:
Finnish
Other Identifying Numbers:
Other: ON: DE98713762; CNN: Project TEKES-BIOENERGY-301; ISBN 952-5165-04-3; TRN: FI9703726
Availability:
OSTI as DE98713762
Submitting Site:
FI
Size:
pp. 59-70
Announcement Date:
Feb 24, 1998

Citation Formats

Impola, R, Saastamoinen, J, and Fagernaes, L. Characterization of drying parameters for solid fuels; Kiinteiden polttoaineiden kuivumis-parametrien karakterisointi. Finland: N. p., 1997. Web.
Impola, R, Saastamoinen, J, & Fagernaes, L. Characterization of drying parameters for solid fuels; Kiinteiden polttoaineiden kuivumis-parametrien karakterisointi. Finland.
Impola, R, Saastamoinen, J, and Fagernaes, L. 1997. "Characterization of drying parameters for solid fuels; Kiinteiden polttoaineiden kuivumis-parametrien karakterisointi." Finland.
@misc{etde_567138,
title = {Characterization of drying parameters for solid fuels; Kiinteiden polttoaineiden kuivumis-parametrien karakterisointi}
author = {Impola, R, Saastamoinen, J, and Fagernaes, L}
abstractNote = {Drying of solid fuel particles in hot gases (50 - 200 deg C) is studied both theoretically and experimentally. The measurements are carried out by using a thermobalance reactor constructed for drying and pyrolysis studies of particles up to 30 mm by diameter. The model is based on the solution of the conservation equations for mass and energy. The main parameters affecting the drying rate are: particle size, particle shape, initial particle moisture content, gas temperature and gas moisture content, temperature of the reactor walls and slip velocity. Also, the drying of biomass fuel particles in fixed and moving beds with hot gas or steam is considered both experimentally and theoretically. A single particle drying model is coupled with a model describing heat and moisture transfer in the gas phase of the bed. The model can be used in the dimensioning of the drying system in a larger scale. Other study subjects were the movement of wood and peat particles in a pneumatic dryer, and the drying of a single fuel particle in steam under various pressures. The aim of the research work was to present a review of recent studies on emissions from biomass drying. The work covers the emissions from different feedstocks, and from different dryers and drying tests (atmospheric, pressurised, flue gas and steam drying), and the effects of factors, such as feedstock, dryer type and drying conditions, on the emissions. The formation and effects of the emissions, and methods to reduce them are also discussed}
place = {Finland}
year = {1997}
month = {Dec}
}