Experimental Investigations of Lean Stability Limits of a Prototype Syngas Burner for Low Calorific Value Gases
(2011) ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition 2.- Abstract
- The lean stability limit of a prototype syngas burner is
investigated. The burner is a three sector system, consisting
of a separate igniter, stabilizer and Main burner. The
ignition sector, Rich-Pilot-Lean (RPL), can be operated with
both rich or lean equivalence values, and serves to ignite the
Pilot sector which stabilizes the Main combustion sector.
The RPL and Main sectors are fully premixed, while the
Pilot sector is partially premixed. The complexity of this
burner design, especially the ability to vary equivalence
ratios in all three sectors, allows for the burner to be
adapted to various gases and achieve optimal combustion.
The... (More) - The lean stability limit of a prototype syngas burner is
investigated. The burner is a three sector system, consisting
of a separate igniter, stabilizer and Main burner. The
ignition sector, Rich-Pilot-Lean (RPL), can be operated with
both rich or lean equivalence values, and serves to ignite the
Pilot sector which stabilizes the Main combustion sector.
The RPL and Main sectors are fully premixed, while the
Pilot sector is partially premixed. The complexity of this
burner design, especially the ability to vary equivalence
ratios in all three sectors, allows for the burner to be
adapted to various gases and achieve optimal combustion.
The gases examined are methane and a high H2 model
syngas (10% CH4, 22.5% CO, 67.5% H2). Both gases are
combusted at their original compositions and the syngas
was also diluted with N2 to a low calorific value fuel with a
Wobbe index of 15 MJ/m3. The syngas is a typical product of
gasification of biomass or coal. Gasification of biomass can
be considered to be CO2 neutral. The lean stability limit is
localized by lowering the equivalence ratio from stable
combustion until the limit is reached. To get a comparable
blowout definition the CO emissions is measured using a
non-dispersive infrared sensor analyzer. The stability limit is
defined when the measured CO emissions exceed 200 ppm. The stability limit is measured for the 3 gas mixtures at
atmospheric pressure. The RPL equivalence ratio is varied
to investigate how this affected the lean blowout limit. A
small decrease in stability limit can be observed when
increasing the RPL equivalence ratio. The experimental
values are compared with values from a perfectly stirred
reactor modeled (PSR), under burner conditions, using the
GRI 3.0 kinetic mechanism for methane and the San Diego
mechanism for the syngas fuels. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3972251
- author
- Sigfrid, Ivan LU ; Whiddon, Ronald LU ; Aldén, Marcus LU and Klingmann, Jens LU
- organization
- publishing date
- 2011
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Lean blowout, combustion, burner, syngas, hydrogen
- host publication
- ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition
- editor
- Gokulakrishnan, Ponnuthurai
- volume
- 2
- publisher
- American Society Of Mechanical Engineers (ASME)
- conference name
- ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition
- conference location
- Vancouver, Canada
- conference dates
- 2011-06-06 - 2011-06-10
- external identifiers
-
- other:GT2011-45694
- scopus:84865461320
- ISBN
- 978-0-7918-5462-4
- DOI
- 10.1115/GT2011-45694
- language
- English
- LU publication?
- yes
- id
- f7881af1-414e-4096-8173-c2a27827a743 (old id 3972251)
- date added to LUP
- 2016-04-04 10:22:49
- date last changed
- 2022-02-06 05:38:58
@inproceedings{f7881af1-414e-4096-8173-c2a27827a743,
abstract = {{The lean stability limit of a prototype syngas burner is<br/><br>
investigated. The burner is a three sector system, consisting<br/><br>
of a separate igniter, stabilizer and Main burner. The<br/><br>
ignition sector, Rich-Pilot-Lean (RPL), can be operated with<br/><br>
both rich or lean equivalence values, and serves to ignite the<br/><br>
Pilot sector which stabilizes the Main combustion sector.<br/><br>
The RPL and Main sectors are fully premixed, while the<br/><br>
Pilot sector is partially premixed. The complexity of this<br/><br>
burner design, especially the ability to vary equivalence<br/><br>
ratios in all three sectors, allows for the burner to be<br/><br>
adapted to various gases and achieve optimal combustion.<br/><br>
The gases examined are methane and a high H2 model<br/><br>
syngas (10% CH4, 22.5% CO, 67.5% H2). Both gases are<br/><br>
combusted at their original compositions and the syngas<br/><br>
was also diluted with N2 to a low calorific value fuel with a<br/><br>
Wobbe index of 15 MJ/m3. The syngas is a typical product of<br/><br>
gasification of biomass or coal. Gasification of biomass can<br/><br>
be considered to be CO2 neutral. The lean stability limit is<br/><br>
localized by lowering the equivalence ratio from stable<br/><br>
combustion until the limit is reached. To get a comparable<br/><br>
blowout definition the CO emissions is measured using a<br/><br>
non-dispersive infrared sensor analyzer. The stability limit is<br/><br>
defined when the measured CO emissions exceed 200 ppm. The stability limit is measured for the 3 gas mixtures at<br/><br>
atmospheric pressure. The RPL equivalence ratio is varied<br/><br>
to investigate how this affected the lean blowout limit. A<br/><br>
small decrease in stability limit can be observed when<br/><br>
increasing the RPL equivalence ratio. The experimental<br/><br>
values are compared with values from a perfectly stirred<br/><br>
reactor modeled (PSR), under burner conditions, using the<br/><br>
GRI 3.0 kinetic mechanism for methane and the San Diego<br/><br>
mechanism for the syngas fuels.}},
author = {{Sigfrid, Ivan and Whiddon, Ronald and Aldén, Marcus and Klingmann, Jens}},
booktitle = {{ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition}},
editor = {{Gokulakrishnan, Ponnuthurai}},
isbn = {{978-0-7918-5462-4}},
keywords = {{Lean blowout; combustion; burner; syngas; hydrogen}},
language = {{eng}},
publisher = {{American Society Of Mechanical Engineers (ASME)}},
title = {{Experimental Investigations of Lean Stability Limits of a Prototype Syngas Burner for Low Calorific Value Gases}},
url = {{http://dx.doi.org/10.1115/GT2011-45694}},
doi = {{10.1115/GT2011-45694}},
volume = {{2}},
year = {{2011}},
}