Title:
Fine Particle Generation, Evolution and Control By Small Scale Biomass Combustion Devices
Author(s):
Bologa, A., Paur, H.-R., Seifert, H., Woletz, K., Ulbricht, T.
Document(s):
Paper
Abstract:
The small scale biomass combustion devices are responsible for fine aerosol emissions. The particles size distribution and particles number and mass concentrations in the exhaust gas from small scale wood combustion devices were investigated. The control of fine particle emissions was done by novel electrostatic precipitator (ESP). The ESP operates on the principle of particle charging in the negative corona discharge and further particle collection under the influence of aerosol space charge in the special designed grounded collector. The electrostatic precipitator is equipped with automatic system for collector cleaning from precipitated particles. During “steadyflame” combustion of woodlogs and woodpellets, particle size distribution in the exhaust gas is monomodal. The particle mean diameter and consequently particle mass concentration in the exhaust gas from woodpellets combustion is lower than from woodlogs combustion. The use of novel ESP decreases particle emissions from biomass combustion devices. The fractional collection efficiency of the electrostatic precipitator achieves values of 90% and the mass collection efficiency is 87±3% recalculated to 13% Vol. of O2. A singlefield pilot ESP was also tested with combustion of grains, mixedand strawpellets showing effective gas cleaning.
Keywords:
biomass, combustion, efficiency, gas cleaning, particle emission, wood
Topic:
Thermochemical conversion - Combustion for small scale applications
Subtopic:
Measurement and reduction of sintering, corrosion and particles emissions of small biomass combustion equipments
Event:
18th European Biomass Conference and Exhibition
Session:
OA11.2
Pages:
1208 - 1218
ISBN-13:
978-88-89407-56-1
ISBN-10:
88-89407-56-5
Paper DOI:
10.5071/18thEUBCE2010-OA11.2
Price:
FREE