Influence of ammonium dihydrogen phosphate on potassium retention and ash melting characteristics during combustion of biomass

Qi, Jianhui, Li, Hui, Han, Kuihua, Zuo, Qi, Gao, Jie, Wang, Qian and Lu, Chunmei (2016) Influence of ammonium dihydrogen phosphate on potassium retention and ash melting characteristics during combustion of biomass. Energy, 102 244-251. doi:10.1016/j.energy.2016.02.090


 
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Author Qi, Jianhui
Li, Hui
Han, Kuihua
Zuo, Qi
Gao, Jie
Wang, Qian
Lu, Chunmei
Title Influence of ammonium dihydrogen phosphate on potassium retention and ash melting characteristics during combustion of biomass
Journal name Energy   Check publisher's open access policy
ISSN 0360-5442
1873-6785
Publication date 2016-05-01
Sub-type Article (original research)
DOI 10.1016/j.energy.2016.02.090
Open Access Status Not yet assessed
Volume 102
Start page 244
End page 251
Total pages 8
Place of publication London, United Kingdom
Publisher Elsevier
Language eng
Subject 2310 Pollution
2100 Energy
Abstract The influence of ammonium dihydrogen phosphate (NHHPO) on the potassium (K) retention ability in the ash phase and the ash melting characteristics during biomass combustion was investigated. Experiments were performed in a tube furnace experimental system and an ash melting point detector. The results show that the addition of NHHPO will increase the potassium retention ability in the ash phase. NHHPO can react with part of potassium elements within the biomass to form potassium phosphates and potassium calcium phosphates, which contributes to the improvement of the melting characteristics. Some stable double salts with high melting point are observed in the formed ashes. The feature temperatures of the formed ash were enhanced by different levels with the addition in of NHHPO. SEM (scanning electron microscope) analysis proved that the addition of NHHPO could avoid the surface melting of the formed ash. NHHPO is an effective biomass additive which could not only enhance the potassium retention ability in the ash phase but also enhance the ash melting characteristic of biomass.
Formatted abstract
The influence of ammonium dihydrogen phosphate (NH4H2PO4) on the potassium (K) retention ability in the ash phase and the ash melting characteristics during biomass combustion was investigated. Experiments were performed in a tube furnace experimental system and an ash melting point detector. The results show that the addition of NH4H2PO4 will increase the potassium retention ability in the ash phase. NH4H2PO4 can react with part of potassium elements within the biomass to form potassium phosphates and potassium calcium phosphates, which contributes to the improvement of the melting characteristics. Some stable double salts with high melting point are observed in the formed ashes. The feature temperatures of the formed ash were enhanced by different levels with the addition in of NH4H2PO4. SEM (scanning electron microscope) analysis proved that the addition of NH4H2PO4 could avoid the surface melting of the formed ash. NH4H2PO4 is an effective biomass additive which could not only enhance the potassium retention ability in the ash phase but also enhance the ash melting characteristic of biomass.
Keyword Ammonium dihydrogen phosphate
Ash melting characteristic
Biomass combustion
Potassium retention
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 51206096
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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Created: Wed, 24 Aug 2016, 21:36:49 EST by Anthony Yeates on behalf of Learning and Research Services (UQ Library)