Proceedings of the 8th Russian-Chinese Symposium “Coal in the 21st Century: Mining, Processing, Safety"

Sulfur Transfer Characteristics and Pyrolysis Simulation in the Coal Polygeneration Process

Authors
Zhang Yaqing, Zhu Jialong, Liang Peng
Corresponding Author
Zhang Yaqing
Available Online October 2016.
DOI
https://doi.org/10.2991/coal-16.2016.75How to use a DOI?
Keywords
Polygeneration; Circulating ash; Sulfur transformation; Heat transfer; Volatile evolution
Abstract
In the polygeneration process of coal pyrolysis/circulating fluidized bed (CFB) combustion, the sulfur transformation characteristics and a heat transfer, reaction, pyrolysis mathematical model for the non-isothermal coal particles has been studied. The results show that, the circulating ash was effective in capturing the gaseous sulfur. The sulfur fixed in ash was increased by the increase in pyrolysis temperature and the decreased in ash particle size. CaO and Fe2O3 in circulating ash displayed significant effect of sulfur retention. The pyrolysis model calculated that, the maximum temperature difference between the core and surface of coal (5 mm) has reached 440 K at the bed height of 0.02 m. The layer closer to the coal core has a higher but later peak value of the devolatilization rate. The temperature of pyrolysis gas and circulating ash is always close.
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Proceedings
8th Russian-Chinese Symposium “Coal in the 21st Century: Mining, Processing, Safety"
Part of series
Advances in Engineering Research
Publication Date
October 2016
ISBN
978-94-6252-233-6
ISSN
2352-5401
DOI
https://doi.org/10.2991/coal-16.2016.75How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Zhang Yaqing
AU  - Zhu Jialong
AU  - Liang Peng
PY  - 2016/10
DA  - 2016/10
TI  - Sulfur Transfer Characteristics and Pyrolysis Simulation in the Coal Polygeneration Process
BT  - 8th Russian-Chinese Symposium “Coal in the 21st Century: Mining, Processing, Safety"
PB  - Atlantis Press
SP  - 392
EP  - 397
SN  - 2352-5401
UR  - https://doi.org/10.2991/coal-16.2016.75
DO  - https://doi.org/10.2991/coal-16.2016.75
ID  - Yaqing2016/10
ER  -