Bed Agglomeration Characteristics during Cocombustion of Animal Waste with Municipal Solid Waste in a Bubbling Fluidized-Bed Boiler—A Thermodynamic Modeling Approach

2014 ◽  
Vol 28 (3) ◽  
pp. 2236-2247 ◽  
Author(s):  
Farzad Moradian ◽  
Anita Pettersson ◽  
Tobias Richards
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Fluidized Bed ◽  
Thermodynamic Modeling ◽  
Animal Waste ◽  
Modeling Approach ◽  
Bubbling Fluidized Bed ◽  
Bed Agglomeration

Nitrogen evolution during the co-combustion of hydrothermally treated municipal solid waste and coal in a bubbling fluidized bed

2014 ◽  
Vol 34 (1) ◽  
pp. 79-85 ◽  
Author(s):  
Liang Lu ◽  
Yuqi Jin ◽  
Hongmei Liu ◽  
Xiaojun Ma ◽  
Kunio Yoshikawa
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Fluidized Bed ◽  
Bubbling Fluidized Bed ◽  
Nitrogen Evolution

scholarly journals Operation of Fluidized-bed Pyrolysis and Melting System for Municipal Solid Waste

2002 ◽  
Vol 2002.12 (0) ◽  
pp. 293-295
Author(s):  
Daijyo KIMURA ◽  
Yasunobu HAMADA ◽  
Hiroo NIKAIDO ◽  
Tadashi ITO ◽  
Takashi SHIMONASHI
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Fluidized Bed

scholarly journals Artificial neural network based modelling approach for municipal solid waste gasification in a fluidized bed reactor

2016 ◽  
Vol 58 ◽  
pp. 202-213 ◽  
Author(s):  
Daya Shankar Pandey ◽  
Saptarshi Das ◽  
Indranil Pan ◽  
James J. Leahy ◽  
Witold Kwapinski
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Artificial Neural ◽  
Waste Gasification ◽  
Modelling Approach

Investigation of Ash-Related Issues During Combustion of Maize Straw and Wood Biomass Blends in Lab-Scale Bubbling Fluidized Bed Reactor

2019 ◽  
Vol 142 (2) ◽  
Author(s):  
Krzysztof Głód ◽  
Janusz Lasek ◽  
Krzysztof Słowik ◽  
Jarosław Zuwała ◽  
Daniel Nabagło ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Air Velocity ◽  
Interesting Phenomenon ◽  
Simultaneous Application ◽  
Agglomeration Process ◽  
Bubbling Fluidized Bed ◽  
Bed Agglomeration ◽  
The Cost ◽  
The Impact ◽  
Combustion Of Solid Fuels

Abstract During the combustion of solid fuels, the undesired effects of ash transformation include bed agglomeration, slagging, and fouling processes. In particular, a problematic consequence of bed agglomeration is the defluidization process, resulting from the disappearance of gaseous bubbles that are created behind air distributors. Different solutions can be applied against the agglomeration process. One possible method is to apply some additives that influence the ash behavior, thus inhibiting the agglomeration process. This paper presents the results of investigations into ash-related issues in a laboratory-scale bubbling fluidized bed (BFB) reactor. In particular, the impact of additives (kaolin, halloysite, fly ash, and the residuals from wet desulfurization system (IMOS)) on bed agglomeration was investigated. It was found that the addition of these compounds increased the defluidization time from ∼109 min (without additive) to ∼285 min in the BFB (with the addition of 0.1 g/min of kaolin). The morphology of additive (kaolin and halloysite) transformation after their addition into the combustion chamber was discussed. Another interesting phenomenon is that residuals from the IMOS exhibited the ability to be an additive against the agglomeration process. The defluidization time can be also significantly increased by the simultaneous application of the additive and the control of fluidization air velocity. The procedure of periodical bed moving by impulse primary air feeding against defluidization (PADM) is suggested and discussed. The PADM procedure resulted in a 36% reduction of additive, thus reducing the cost of measures against ash-related issues.

scholarly journals Solidification of Municipal Solid Waste Incineration Fly Ash through Co-Mechanical Treatment with Circulation Fluidized Bed Combustion Fly Ash

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 141
Author(s):  
Zhengzhen Yao ◽  
Zhonghui Xu ◽  
Qin Shuai ◽  
Xiaoyue Chen ◽  
Zao Jiang ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Fluidized Bed ◽  
Mechanical Treatment ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration ◽  
Fluidized Bed Combustion ◽  
Waste Incineration Fly Ash

This study aims to explore the solidification performance of municipal solid waste incineration fly ash (MSWIFA) through co-mechanical treatment with circulation fluidized bed combustion fly ash (CFBCFA). The mineral characterization, physical properties, and leaching resistance of the solidified bodies are investigated by X-ray diffraction spectroscopy (XRD), Fourier transform infrared spectroscopy (FT-IR), Thermogravimetry-differential thermal analysis (TG-DTA), compressive strength, porosity, and leaching test, respectively. C–S–H, ettringite (AFt), and Friedel’s salt (FS) are the predominant hydrate products in the CFBCFA based solidified bodies, which are similar to the cement based solidified bodies. However, CFBCFA based solidified bodies exhibit higher compressive strength (36.7 MPa) than cement based solidified bodies (11.28 MPa), attributing to the three reasons: lower porosity and more compact internal structure of CFBCFA based solidified bodies; large amounts of Ca(OH)2 originating from MSWIFA are conducive to promoting the hydration reaction extent and compressive strength of the CFBCFA based solidified bodies; excessive Ca(OH)2 would cause compressive strength deterioration for the cement based solidified bodies. The heavy metals (Zn, Cu, Cr, Cd, and Pb) concentrations in the extraction solution of the CFBCFA based solidified bodies are far below the requirements of Chinese National Standard GB 5085.3-2007. The solidification of MSWIFA through co-mechanical treatment could be an ideal substitute for cement solidification technology.

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