Specifics of Electrostatic Precipitation of Fly Ash from Small-Scale Fossil Fuel Combustion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27650%2F23%3A10252917" target="_blank" >RIV/61989100:27650/23:10252917 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2227-9717/11/3/808" target="_blank" >https://www.mdpi.com/2227-9717/11/3/808</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/pr11030808" target="_blank" >10.3390/pr11030808</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Specifics of Electrostatic Precipitation of Fly Ash from Small-Scale Fossil Fuel Combustion

Popis výsledku v původním jazyce

This paper investigates the removal efficiency of a honeycomb electrostatic precipitator (ESP) applied to control particulate matter (PM) emissions from a small-scale boiler with combustion lignite and hard coal. The specifics of the precipitation of emissions from small-scale boilers are discussed, and the design principles for relevant ESPs are presented and used. The ion-induced nucleation of sulfuric acid occurred, causing the drastic penetration of 19 nm particles through the ESP. Despite this, the overall collection efficiency was sufficient to meet the EU&apos;s Ecodesign Directive requirements. Back corona was not detected. The optimal ESP performance is defined with further parameters: a current density of 0.5 mA/m(2) at an electric field strength of about 2.7 x 10(5) V/m; a minimal specific collecting area of ESP (SCA) of 60 m(2)/(m(3)/s); and Nt-product of 4.5 x 10(14) s/m(3). Such parameters of ESPs should ensure adequate PM emissions control for any type of boiler with similar emissions characteristics. The composition of collected fly ash particles was analysed, and a method for fly ash utilisation was proposed. This research may be helpful for designing ESPs to control PM emissions for small-scale units with fossil fuel combustion.

Název v anglickém jazyce

Specifics of Electrostatic Precipitation of Fly Ash from Small-Scale Fossil Fuel Combustion

Popis výsledku anglicky

This paper investigates the removal efficiency of a honeycomb electrostatic precipitator (ESP) applied to control particulate matter (PM) emissions from a small-scale boiler with combustion lignite and hard coal. The specifics of the precipitation of emissions from small-scale boilers are discussed, and the design principles for relevant ESPs are presented and used. The ion-induced nucleation of sulfuric acid occurred, causing the drastic penetration of 19 nm particles through the ESP. Despite this, the overall collection efficiency was sufficient to meet the EU&apos;s Ecodesign Directive requirements. Back corona was not detected. The optimal ESP performance is defined with further parameters: a current density of 0.5 mA/m(2) at an electric field strength of about 2.7 x 10(5) V/m; a minimal specific collecting area of ESP (SCA) of 60 m(2)/(m(3)/s); and Nt-product of 4.5 x 10(14) s/m(3). Such parameters of ESPs should ensure adequate PM emissions control for any type of boiler with similar emissions characteristics. The composition of collected fly ash particles was analysed, and a method for fly ash utilisation was proposed. This research may be helpful for designing ESPs to control PM emissions for small-scale units with fossil fuel combustion.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20700 - Environmental engineering

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Processes

ISSN

2227-9717

e-ISSN

2227-9717

Svazek periodika

11

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

17

Strana od-do

—

Kód UT WoS článku

000968604200001

EID výsledku v databázi Scopus

2-s2.0-85151361225