Nox removal from Small-Scale biomass combustion in DC Corona: Influence of discharge polarity on plasma chemical kinetics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27650%2F24%3A10255571" target="_blank" >RIV/61989100:27650/24:10255571 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0009250924008972?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0009250924008972?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ces.2024.120597" target="_blank" >10.1016/j.ces.2024.120597</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nox removal from Small-Scale biomass combustion in DC Corona: Influence of discharge polarity on plasma chemical kinetics

Popis výsledku v původním jazyce

Direct current corona discharge was investigated to reduce nitrogen oxide (NOx) emissions from a 15-kW small-scale biomass boiler. The electrostatic precipitator was designed and operated under different regimes with both positive and negative polarities. A reduction in NOx concentration from 200 mg/m3 to 44/46 mg/m3 for positive/negative polarities was achieved, corresponding to a NOx removal efficiency of approximately 78 %. However, the specific input energy required for a positive corona (35.7 J/L) was lower than that for a negative corona (48.4 J/L), indicating an energy efficiency advantage for positive polarity. The results were analysed for NO decontamination involving reactions with OH radicals, ground-state oxygen atoms, and ozone. Positive corona favoured NOx removal via reactions with OH (21 % efficiency) and oxidation by oxygen (12 % efficiency), whereas negative corona promoted NO oxidation by ozone (75 % efficiency). The distinct distribution of electrons and active species, influenced by the non-uniform electric field and polarity, governs plasma chemical kinetics. (C) 2024 Elsevier Ltd

Název v anglickém jazyce

Nox removal from Small-Scale biomass combustion in DC Corona: Influence of discharge polarity on plasma chemical kinetics

Popis výsledku anglicky

Direct current corona discharge was investigated to reduce nitrogen oxide (NOx) emissions from a 15-kW small-scale biomass boiler. The electrostatic precipitator was designed and operated under different regimes with both positive and negative polarities. A reduction in NOx concentration from 200 mg/m3 to 44/46 mg/m3 for positive/negative polarities was achieved, corresponding to a NOx removal efficiency of approximately 78 %. However, the specific input energy required for a positive corona (35.7 J/L) was lower than that for a negative corona (48.4 J/L), indicating an energy efficiency advantage for positive polarity. The results were analysed for NO decontamination involving reactions with OH radicals, ground-state oxygen atoms, and ozone. Positive corona favoured NOx removal via reactions with OH (21 % efficiency) and oxidation by oxygen (12 % efficiency), whereas negative corona promoted NO oxidation by ozone (75 % efficiency). The distinct distribution of electrons and active species, influenced by the non-uniform electric field and polarity, governs plasma chemical kinetics. (C) 2024 Elsevier Ltd

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Science

ISSN

0009-2509

e-ISSN

—

Svazek periodika

300

Číslo periodika v rámci svazku

5 December 2024, 120597

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

001295464700001

EID výsledku v databázi Scopus

2-s2.0-85200950481