Numerical study of the combustion and application of SNCR for NOx reduction in a lab-scale biomass boiler
(2021) In Fuel 293.- Abstract
In this paper, a numerical study of flow, reactions and NOx emissions from a biomass boiler is presented. Detailed reaction mechanisms for the decomposition of tar species, combustion of hydrocarbons and formation of NOx are employed by adopting appropriate reaction sets from literature. The proposed mechanism is used to perform CFD simulations of a laboratory-scale biomass boiler, and temperature and species concentrations are compared with the experimental data. NOx formation and emissions are studied in detail and the contribution of different pathways for NOx formation are identified. Furthermore, the CFD model is used to study the application of Selective Non-Catalytic Reduction (SNCR)... (More)
In this paper, a numerical study of flow, reactions and NOx emissions from a biomass boiler is presented. Detailed reaction mechanisms for the decomposition of tar species, combustion of hydrocarbons and formation of NOx are employed by adopting appropriate reaction sets from literature. The proposed mechanism is used to perform CFD simulations of a laboratory-scale biomass boiler, and temperature and species concentrations are compared with the experimental data. NOx formation and emissions are studied in detail and the contribution of different pathways for NOx formation are identified. Furthermore, the CFD model is used to study the application of Selective Non-Catalytic Reduction (SNCR) method in this boiler. The effects of height and flow rate of ammonia injection on the performance of SNCR method are studied. It is observed that the SNCR, can reduce up to 63% of NOx emissions.
(Less)
- author
- Mousavi, Seyed Morteza LU ; Fatehi, Hesameddin LU and Bai, Xue Song LU
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Biomass combustion, CFD simulation, Detailed tar species, NO emissions, SNCR, Wood pellet boiler
- in
- Fuel
- volume
- 293
- article number
- 120154
- publisher
- Elsevier
- external identifiers
-
- scopus:85101389938
- ISSN
- 0016-2361
- DOI
- 10.1016/j.fuel.2021.120154
- language
- English
- LU publication?
- yes
- id
- e7ddd1cf-e55f-4613-af02-6981cbdbf1ad
- date added to LUP
- 2021-03-08 11:23:13
- date last changed
- 2022-11-23 20:38:10
@article{e7ddd1cf-e55f-4613-af02-6981cbdbf1ad,
abstract = {{<p>In this paper, a numerical study of flow, reactions and NO<sub>x</sub> emissions from a biomass boiler is presented. Detailed reaction mechanisms for the decomposition of tar species, combustion of hydrocarbons and formation of NO<sub>x</sub> are employed by adopting appropriate reaction sets from literature. The proposed mechanism is used to perform CFD simulations of a laboratory-scale biomass boiler, and temperature and species concentrations are compared with the experimental data. NO<sub>x</sub> formation and emissions are studied in detail and the contribution of different pathways for NO<sub>x</sub> formation are identified. Furthermore, the CFD model is used to study the application of Selective Non-Catalytic Reduction (SNCR) method in this boiler. The effects of height and flow rate of ammonia injection on the performance of SNCR method are studied. It is observed that the SNCR, can reduce up to 63% of NO<sub>x</sub> emissions.</p>}},
author = {{Mousavi, Seyed Morteza and Fatehi, Hesameddin and Bai, Xue Song}},
issn = {{0016-2361}},
keywords = {{Biomass combustion; CFD simulation; Detailed tar species; NO emissions; SNCR; Wood pellet boiler}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Fuel}},
title = {{Numerical study of the combustion and application of SNCR for NO<sub>x</sub> reduction in a lab-scale biomass boiler}},
url = {{http://dx.doi.org/10.1016/j.fuel.2021.120154}},
doi = {{10.1016/j.fuel.2021.120154}},
volume = {{293}},
year = {{2021}},
}