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Real-time measurement of aerosol particle concentration at high temperatures; Hiukkaspitoisuuden reaaliaikainen mittaaminen korkeassa laempoetilassa

Abstract

The aim of this project is to develop a new method for continuous aerosol particle concentration measurement at elevated temperatures (up to 800-1000 deg C). The measured property of the aerosol particles is the so called Fuchs surface area. This quantity is relevant for diffusion limited mass transfer to particles. The principle of the method is as follows. First, aerosol particles are charged electrically by diffusion charging process. The charging takes place at high temperature. After the charging, aerosol is diluted and cooled. Finally, aerosol particles are collected and the total charge carried by the aerosol particles is measured. Particle collection and charge measurement take place at low temperature. Benefits of this measurement method are: particles are charged in-situ, charge of the particles is not affected by the temperature and pressure changes after sampling, particle collection and charge measurement are carried out outside the process conditions, and the measured quantity is well defined. The results of this study can be used when the formation of the fly ash particles is studied. Another field of applications is the study and the development of gasification processes. Possibly, the method can also be used for the monitoring the operation of the high temperature  More>>
Authors:
Keskinen, J; Hautanen, J; Laitinen, A [1] 
  1. Tampere Univ. of Technology (Finland). Physics
Publication Date:
Oct 01, 1997
Product Type:
Technical Report
Report Number:
AAA-LIEKKI-L97-1-Pt.2
Reference Number:
SCA: 200202; PA: FI-97:003572; EDB-97:129881; SN: 97001852395
Resource Relation:
Other Information: DN: LIEKKI 2 Research Programme; PBD: 1997; Related Information: Is Part Of LIEKKI 2 - Annual Review 1997. Project reports; Hupa, M.; Matinlinna, J.; Ljung, M. [eds.]; PB: 484 p.
Subject:
20 FOSSIL-FUELED POWER PLANTS; AEROSOLS; REAL TIME SYSTEMS; MEASURING METHODS; PARTICLES; FLUE GAS; TEMPERATURE DEPENDENCE; REFUSE DERIVED FUELS
OSTI ID:
531301
Research Organizations:
Aabo Akademi, Turku (Finland). Combustion Chemistry Research Group
Country of Origin:
Finland
Language:
Finnish
Other Identifying Numbers:
Other: ON: DE98701757; CNN: Project TEKES-LIEKKI2-317; ISBN 951-650-955-X; TRN: FI9703572
Availability:
OSTI as DE98701757
Submitting Site:
FI
Size:
pp. 545-559
Announcement Date:
Oct 23, 1997

Citation Formats

Keskinen, J, Hautanen, J, and Laitinen, A. Real-time measurement of aerosol particle concentration at high temperatures; Hiukkaspitoisuuden reaaliaikainen mittaaminen korkeassa laempoetilassa. Finland: N. p., 1997. Web.
Keskinen, J, Hautanen, J, & Laitinen, A. Real-time measurement of aerosol particle concentration at high temperatures; Hiukkaspitoisuuden reaaliaikainen mittaaminen korkeassa laempoetilassa. Finland.
Keskinen, J, Hautanen, J, and Laitinen, A. 1997. "Real-time measurement of aerosol particle concentration at high temperatures; Hiukkaspitoisuuden reaaliaikainen mittaaminen korkeassa laempoetilassa." Finland.
@misc{etde_531301,
title = {Real-time measurement of aerosol particle concentration at high temperatures; Hiukkaspitoisuuden reaaliaikainen mittaaminen korkeassa laempoetilassa}
author = {Keskinen, J, Hautanen, J, and Laitinen, A}
abstractNote = {The aim of this project is to develop a new method for continuous aerosol particle concentration measurement at elevated temperatures (up to 800-1000 deg C). The measured property of the aerosol particles is the so called Fuchs surface area. This quantity is relevant for diffusion limited mass transfer to particles. The principle of the method is as follows. First, aerosol particles are charged electrically by diffusion charging process. The charging takes place at high temperature. After the charging, aerosol is diluted and cooled. Finally, aerosol particles are collected and the total charge carried by the aerosol particles is measured. Particle collection and charge measurement take place at low temperature. Benefits of this measurement method are: particles are charged in-situ, charge of the particles is not affected by the temperature and pressure changes after sampling, particle collection and charge measurement are carried out outside the process conditions, and the measured quantity is well defined. The results of this study can be used when the formation of the fly ash particles is studied. Another field of applications is the study and the development of gasification processes. Possibly, the method can also be used for the monitoring the operation of the high temperature particle collection devices. (orig.)}
place = {Finland}
year = {1997}
month = {Oct}
}