Attapulgite suspension mitigates fine particulate matter (PM2.5) emission from coal combustion in fluidized bed.
J Environ Manage
; 209: 245-253, 2018 Mar 01.
Article
em En
| MEDLINE
| ID: mdl-29306141
ABSTRACT
To reduce fine particulate matter emission from coal burning sources especially fossil fuel fired energy generation facility is critical to improve air quality. Attapulgite suspension was attempted to spray in a 6â¯kW fluidized bed facility and reduce fine particulate matter emission during coal combustion. The key parameters such as attapulgite mass, flowrate and spraying zone were investigated to determine the optimal and critical conditions that influence fine particulate matter emission. Exciting results indicate that both fine particle number and mass concentrations are largely decreased due to the physical/chemical absorption with the suitable mass ratio of 3â¯wt%. The spray of attapulgite suspension in both dense bed and dilute bed effectively mitigates fine particle emission based on the agglomeration and absorption. The most excellent result is achieved at a flowrate of 38â¯ml/min in dense bed with particle number reduction up to 93.5% in PM2.5 (fine particles is equal to/less than 2.5⯵m), 93.6% in PM1.0 (fine particles is equal to/less than 1.0⯵m) and 93.7% in PM0.1 (fine particles is equal to/less than 0.1⯵m), respectively. The work highlights the potential of spraying attapulgite suspension as an effective process to reduce fine particle emission during coal combustion in fluidized bed system.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Carvão Mineral
/
Compostos de Silício
/
Compostos de Magnésio
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article