Coagulation contributing to electrostatic precipitation of ultrafine fly ash from small-scale biomass combustions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27650%2F22%3A10251398" target="_blank" >RIV/61989100:27650/22:10251398 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2590123022003334?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2590123022003334?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.rineng.2022.100663" target="_blank" >10.1016/j.rineng.2022.100663</a>

Result language

angličtina

Original language name

Coagulation contributing to electrostatic precipitation of ultrafine fly ash from small-scale biomass combustions

Original language description

An electrostatic precipitator (ESP) is an efficient device for removing fly ash from small-scale solid-fuel com-bustion. Under corona discharge, a gaseous medium becomes ionised, and particles become charged by colliding with ions. An electric field forces the movement of charged particles to remove gases and induces the movement of generated ions, causing secondary electrohydrodynamic flow. Thus, particle charge, the presence of neigh-bouring particles, an ESP electric field, and gas flow turbulence can enhance particle coagulation. Therefore, the ultrafine particle concentration in an ESP is expected to evolve under electrostatic removal and enhanced coagulation. In the present study, the contribution of coagulation is explored and confirmed using experimental measurements performed on an ESP used to control emissions from a 160-kW boiler with biomass combustion. The ESP was operated under several modes to obtain different coagulation conditions. Changes in particle concentrations were measured simultaneously using two techniques. It was found that coagulation could be responsible for up to 5% of the total removal efficiency, depending on the ESP operation parameters. The present study can promote a deeper understanding of the processes involved in electrostatic precipitation, and the ob-tained results can be useful for practical ESP engineering.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20704 - Energy and fuels

Project

—

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Results in Engineering

ISSN

2590-1230

e-ISSN

—

Volume of the periodical

16

Issue of the periodical within the volume

DEC 2022

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

nestrankovano

UT code for WoS article

000869021500006

EID of the result in the Scopus database

2-s2.0-85139302893