Experimental study of biomass combustion and separation using vertical cyclone combustor

2018 ◽  
Vol 32 (11) ◽  
pp. 5493-5500
Author(s):  
Ahmed Gharib ◽  
Ibrahim Abdel-Rahman ◽  
Mohamed Shehata
Author(s):  
Kangil Choe ◽  
Yangho Lee ◽  
Soongul Lee ◽  
Michael Weedon

Abstract An experimental study presents a new innovative cyclone combustor, known as the three-way swirling combustion (TSC), utilizing non-pulverized wood biomass. The study shows that the combustor reached near-complete combustion, as evident in the measurements of CO and NOx emissions, and the excess air ratio. It also demonstrates the unique features of the TSC combustor, which includes an air curtain insulation effect with a high ash removal rate that reduces clinker and slag formation, alongside a chamber that does not need a refractory brick. It compares against conventional combustion technology, such as the stoker and the fluidized bed in terms of the amount of emission gases, maximum temperature, and excessive air ratio. Six geometrical and operational design criteria of the TSC for wood biomass combustion are identified for future work of design optimization. Ultimately, the implementation of the TSC for non-pulverized wood biomass and possibly for other biomass holds great potential for economically and technically beneficial incineration and power generation.


2018 ◽  
Vol 199 ◽  
pp. 400-410 ◽  
Author(s):  
Imran Ali Shah ◽  
Xiang Gou ◽  
Qiyan Zhang ◽  
Jinxiang Wu ◽  
Enyu Wang ◽  
...  

2016 ◽  
Vol 27 (1) ◽  
pp. 215-222
Author(s):  
Yingjuan Shao ◽  
Nanami Aoki ◽  
Zhenbo Tong ◽  
Wenqi Zhong ◽  
Aibing Yu ◽  
...  

2008 ◽  
Vol 22 (2) ◽  
pp. 1380-1390 ◽  
Author(s):  
Chungen Yin ◽  
Lasse Rosendahl ◽  
Søren K. Kær ◽  
Sønnik Clausen ◽  
Søren L. Hvid ◽  
...  

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3359 ◽  
Author(s):  
Jan Poláčik ◽  
Ladislav Šnajdárek ◽  
Michal Špiláček ◽  
Jiří Pospíšil ◽  
Tomáš Sitek

This article extends earlier research by the authors that was devoted to the experimental evaluation of ultra-fine particles produced by the laboratory combustion of beechwood samples. These particles can have severe influence on human health. The current paper presents a parametrical study carried out to assess the influence of the composition of the atmosphere and the temperature on the production of ultra-fine particles during the micro-scale combustion process. The paper presents a laboratory procedure that incorporate the thermogravimetric analysis (TGA) and detailed monitoring of the size distribution of the produced fine particles. The study utilises the laboratory scale identification of the formation and growth of the fine particles during the temperature increase of beech wood samples. It also compares the particle emissions produced by beech heartwood and beech bark. The size of the emitted particles is very strongly influenced by the concentration of light volatiles released from the heated wood sample. From the experimental study, decreasing oxygen content in the atmosphere generally results in higher particulate matter (PM) production.


2012 ◽  
Vol 27 (1) ◽  
pp. 515-522 ◽  
Author(s):  
Jisong Bai ◽  
Chunjiang Yu ◽  
Lianming Li ◽  
Peng Wu ◽  
Zhongyang Luo ◽  
...  

2009 ◽  
Vol 86 (12) ◽  
pp. 2644-2650 ◽  
Author(s):  
Mahmoud A. Youssef ◽  
Seddik S. Wahid ◽  
Maher A. Mohamed ◽  
Ahmed A. Askalany

Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.


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