In-situ Measurement of Sodium and Potassium Release during Oxy-Fuel Combustion of Lignite using Laser-Induced Breakdown Spectroscopy: Effects of O-2 and CO2 Concentration
(2013) In Energy & Fuels 27(2). p.1123-1130- Abstract
- Laser-induced breakdown spectroscopy (LIBS) was used in this study to measure quantitatively the sodium (Na) and potassium (K) release from burning coal particles under oxy-fuel combustion environments. A specially designed laminar premixed burner was employed to provide a postflame environment with different O-2 and CO2 concentrations, in which the effects of O-2 and CO2 on the release of Na and K during coal oxy-fuel combustion were studied systematically. For the devolatilization stage, neither O-2 nor CO2 had significant influence on the Na and K release. The release of Na and K during the char stage, however, changed significantly at different O-2 and CO2 concentrations. Under these experimental conditions, when the O-2 concentration... (More)
- Laser-induced breakdown spectroscopy (LIBS) was used in this study to measure quantitatively the sodium (Na) and potassium (K) release from burning coal particles under oxy-fuel combustion environments. A specially designed laminar premixed burner was employed to provide a postflame environment with different O-2 and CO2 concentrations, in which the effects of O-2 and CO2 on the release of Na and K during coal oxy-fuel combustion were studied systematically. For the devolatilization stage, neither O-2 nor CO2 had significant influence on the Na and K release. The release of Na and K during the char stage, however, changed significantly at different O-2 and CO2 concentrations. Under these experimental conditions, when the O-2 concentration increased from 3.9% to 10.6%, the peak concentration of Na at the char stage increased from 15.2 mg/m(3) to 33.7 mg/m(3), and the maximum concentration of K increased from 6.2 mg/m(3) to 11.7 mg/m(3). When the CO2 concentration increased from 35.8% to 69.4%, the release of Na and K was inhibited during the char stage, with the peak concentration decreasing from 8.9 mg/m(3) to 6.9 mg/m(3) for Na and from 3.7 mg/m(3) to 2.4 mg/m(3) for K. During the ash stage, the release of Na and K decreased with the O-2 concentration, whereas it increased with the CO2 concentration. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3657456
- author
- He, Yong ; Zhu, Jiajian LU ; Li, Bo LU ; Wang, Zhihua ; Li, Zhongshan LU ; Aldén, Marcus LU and Cen, Kefa
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Energy & Fuels
- volume
- 27
- issue
- 2
- pages
- 1123 - 1130
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000315431900057
- scopus:84874129886
- ISSN
- 0887-0624
- DOI
- 10.1021/ef301750h
- language
- English
- LU publication?
- yes
- id
- 01e02fb9-01f4-4add-b7ad-761ae8fefdf8 (old id 3657456)
- date added to LUP
- 2016-04-01 14:50:37
- date last changed
- 2022-04-14 20:02:10
@article{01e02fb9-01f4-4add-b7ad-761ae8fefdf8,
abstract = {{Laser-induced breakdown spectroscopy (LIBS) was used in this study to measure quantitatively the sodium (Na) and potassium (K) release from burning coal particles under oxy-fuel combustion environments. A specially designed laminar premixed burner was employed to provide a postflame environment with different O-2 and CO2 concentrations, in which the effects of O-2 and CO2 on the release of Na and K during coal oxy-fuel combustion were studied systematically. For the devolatilization stage, neither O-2 nor CO2 had significant influence on the Na and K release. The release of Na and K during the char stage, however, changed significantly at different O-2 and CO2 concentrations. Under these experimental conditions, when the O-2 concentration increased from 3.9% to 10.6%, the peak concentration of Na at the char stage increased from 15.2 mg/m(3) to 33.7 mg/m(3), and the maximum concentration of K increased from 6.2 mg/m(3) to 11.7 mg/m(3). When the CO2 concentration increased from 35.8% to 69.4%, the release of Na and K was inhibited during the char stage, with the peak concentration decreasing from 8.9 mg/m(3) to 6.9 mg/m(3) for Na and from 3.7 mg/m(3) to 2.4 mg/m(3) for K. During the ash stage, the release of Na and K decreased with the O-2 concentration, whereas it increased with the CO2 concentration.}},
author = {{He, Yong and Zhu, Jiajian and Li, Bo and Wang, Zhihua and Li, Zhongshan and Aldén, Marcus and Cen, Kefa}},
issn = {{0887-0624}},
language = {{eng}},
number = {{2}},
pages = {{1123--1130}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Energy & Fuels}},
title = {{In-situ Measurement of Sodium and Potassium Release during Oxy-Fuel Combustion of Lignite using Laser-Induced Breakdown Spectroscopy: Effects of O-2 and CO2 Concentration}},
url = {{http://dx.doi.org/10.1021/ef301750h}},
doi = {{10.1021/ef301750h}},
volume = {{27}},
year = {{2013}},
}