Kinetics of ammonia decomposition in hot gas cleaning
(1999) In Industrial & Engineering Chemistry Research 38(11). p.4175-4182- Abstract
- Reduction in the amount of ammonia in fuel gas from biomass gasification was studied. Experiments were carried out in a fixed-bed reactor dt 200-1000 degrees C, 21 atm. A kinetic model for ammonia decomposition was developed. The partial pressure of hydrogen in the fuel gas was a key factor to model ammonia decomposition. Activation energies in the empty reactor, on carbon, and in a sand bed were similar, 130-140 kJ/mol. The frequency factors for carbon and sand were 10 times as large as for the empty reactor. The activation energy for a Ni-based catalyst was 111-113 kJ/mol. Carbon deposit deactivated the Ni-based catalyst. High temperature was found to be essential for avoiding carbon fouling and for achieving high ammonia removal... (More)
- Reduction in the amount of ammonia in fuel gas from biomass gasification was studied. Experiments were carried out in a fixed-bed reactor dt 200-1000 degrees C, 21 atm. A kinetic model for ammonia decomposition was developed. The partial pressure of hydrogen in the fuel gas was a key factor to model ammonia decomposition. Activation energies in the empty reactor, on carbon, and in a sand bed were similar, 130-140 kJ/mol. The frequency factors for carbon and sand were 10 times as large as for the empty reactor. The activation energy for a Ni-based catalyst was 111-113 kJ/mol. Carbon deposit deactivated the Ni-based catalyst. High temperature was found to be essential for avoiding carbon fouling and for achieving high ammonia removal efficiency. Estimation of the ammonia reduction for fuel gas showed that a moderate amount of ammonia could be removed by use of the Ni-based pellets at 800 degrees C. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3915464
- author
- Wang, Wuyin LU ; Padban, N ; Ye, ZC ; Andersson, Arne LU and Bjerle, Ingemar LU
- organization
- publishing date
- 1999
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Industrial & Engineering Chemistry Research
- volume
- 38
- issue
- 11
- pages
- 4175 - 4182
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000083533700006
- scopus:0033231182
- ISSN
- 0888-5885
- DOI
- 10.1021/ie990337d
- language
- English
- LU publication?
- yes
- id
- 14fe860e-3335-4fdb-838d-330bb29b6e7d (old id 3915464)
- date added to LUP
- 2016-04-01 16:29:08
- date last changed
- 2022-01-28 20:01:26
@article{14fe860e-3335-4fdb-838d-330bb29b6e7d,
abstract = {{Reduction in the amount of ammonia in fuel gas from biomass gasification was studied. Experiments were carried out in a fixed-bed reactor dt 200-1000 degrees C, 21 atm. A kinetic model for ammonia decomposition was developed. The partial pressure of hydrogen in the fuel gas was a key factor to model ammonia decomposition. Activation energies in the empty reactor, on carbon, and in a sand bed were similar, 130-140 kJ/mol. The frequency factors for carbon and sand were 10 times as large as for the empty reactor. The activation energy for a Ni-based catalyst was 111-113 kJ/mol. Carbon deposit deactivated the Ni-based catalyst. High temperature was found to be essential for avoiding carbon fouling and for achieving high ammonia removal efficiency. Estimation of the ammonia reduction for fuel gas showed that a moderate amount of ammonia could be removed by use of the Ni-based pellets at 800 degrees C.}},
author = {{Wang, Wuyin and Padban, N and Ye, ZC and Andersson, Arne and Bjerle, Ingemar}},
issn = {{0888-5885}},
language = {{eng}},
number = {{11}},
pages = {{4175--4182}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Industrial & Engineering Chemistry Research}},
title = {{Kinetics of ammonia decomposition in hot gas cleaning}},
url = {{http://dx.doi.org/10.1021/ie990337d}},
doi = {{10.1021/ie990337d}},
volume = {{38}},
year = {{1999}},
}