scholarly journals A feasibility assessment of the production of char using the slow pyrolysis process

Heliyon ◽  
2020 ◽  
Vol 6 (7) ◽  
pp. e04346
Author(s):  
Ongama Soka ◽  
Oluwaseun Oyekola
Keyword(s):  
Pyrolysis Process ◽  
Slow Pyrolysis ◽  
Feasibility Assessment

Characterization of human manure-derived biochar and energy-balance analysis of slow pyrolysis process

2014 ◽  
Vol 34 (9) ◽  
pp. 1619-1626 ◽  
Author(s):  
Xuan Liu ◽  
Zifu Li ◽  
Yaozhong Zhang ◽  
Rui Feng ◽  
Ibrahim Babatunde Mahmood
Keyword(s):  
Energy Balance ◽  
Pyrolysis Process ◽  
Slow Pyrolysis ◽  
Balance Analysis ◽  
Energy Balance Analysis

scholarly journals Pre-Treatment of Furniture Waste for Smokeless Charcoal Production

Materials ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3188
Author(s):  
Paweł Kazimierski ◽  
Paulina Hercel ◽  
Katarzyna Januszewicz ◽  
Dariusz Kardaś
Keyword(s):  
Oriented Strand Board ◽  
Raw Materials ◽  
Medium Density Fiberboard ◽  
Fast Pyrolysis ◽  
Pyrolysis Product ◽  
Pyrolysis Process ◽  
Heating Rates ◽  
Charcoal Production ◽  
Pyrolysis Products ◽  
Slow Pyrolysis

The aim of this study was to assess the possibility of using furniture waste for smokeless fuel production using the pyrolysis process. Four types of wood-based wastes were used in the pyrolysis process: pine sawdust (PS), chipboard (CB), medium-density fiberboard (MDF), and oriented strand board (OSB). Additionally, the slow and fast types of pyrolysis were compared, where the heating rates were 15 °C/min and 100 °C/min, respectively. Chemical analyses of the raw materials and the pyrolysis product yields are presented. A significant calorific value rise was observed for the solid pyrolysis products (from approximately 17.5 MJ/kg for raw materials up to approximately 29 MJ/kg for slow pyrolysis products and 31 MJ/kg for fast pyrolysis products). A higher carbon content of char was observed in raw materials (from approximately 48% for raw materials up to approximately 75% for slow pyrolysis products and approximately 82% for fast pyrolysis products) than after the pyrolysis process. This work presents the possibility of utilizing waste furniture material that is mostly composed of wood, but is not commonly used as a substrate for conversion into low-emission fuel. The results prove that the proposed solution produced char characterized by the appropriate properties to be classified as smokeless coal.

Energy Balance Analysis on the Slow Pyrolysis Process of Cattle Manure

2013 ◽  
Vol 392 ◽  
pp. 531-534 ◽  
Author(s):  
Xuan Liu ◽  
Zi Fu Li ◽  
Yao Zhong Zhang
Keyword(s):  
Energy Efficiency ◽  
Energy Resource ◽  
Cow Manure ◽  
Pyrolysis Process ◽  
Slow Pyrolysis ◽  
Energy Value ◽  
Balance Analysis ◽  
Process Energy ◽  
In The Beginning ◽  
Energy Balances

Energy balances are increasingly used to assess the energy efficiency and productivity of production. In this study, energy balances for the slow pyrolysis process of cow manure were calculated. The results show that, for cow manure dry matter, all the recovered energy value from the pyrolysis process products is about 12 times of the energy needs for the dry matters pyrolysis process. But the moisture has a noteworthy impact on the energy efficiency. When the input moisture is 60.85%, the recovered energy value from all products is approximately equal to the process energy consumption, and if only using non-condensable gases (NCG) as the energy resource, the input moisture should lower than 36.63%. Meanwhile, if the vapor could be separated in the beginning phase of pyrolysis process, the energy efficiency will be greatly improved, e.g. if removed all water vapor out the system at 423K, the former two data could be 71.43% and 48.18%, which is 10.58% and 11.45% higher than the process without vapor separation handling.

scholarly journals Characterization of Slow Pyrolysis Wood Vinegar and Tar from Banana Wastes Biomass as Potential Organic Pesticides

2017 ◽  
Vol 10 (3) ◽  
pp. 81 ◽  
Author(s):  
Godfrey Omulo ◽  
Sarah Willett ◽  
Jeffrey Seay ◽  
Noble Banadda ◽  
Isa Kabenge ◽  
...  
Keyword(s):  
Soil Degradation ◽  
Physicochemical Analysis ◽  
Pyrolysis Process ◽  
Recent Past ◽  
Slow Pyrolysis ◽  
Wood Vinegar ◽  
Peak Areas ◽  
Organic Pesticides ◽  
Banana Wastes

Slow pyrolysis process has been used in the recent past to yield wood vinegar from various biomass wastes with a quest to investigate their chemical composition and possible uses. This study utilizes the abundant banana wastes in Uganda including leaves, pseudostem and peels (mpologoma, kisansa and kibuzi species) in the slow pyrolysis process to yield vinegar, tar and biochar. Characterization of these banana wastes’ vinegar and tar fractions were investigated via chromatographic and physicochemical analysis. The principle compounds present in the banana wastes vinegar and tar as per percentage peak areas were acids (68.6%), alcohols (62.5%), ketones (27.6%), phenols (25.7%) and furans (21.8%). The products characterization indicate that vinegar and tar contain compounds that can be used as pesticides, termiticide, fungicides, insect repellants, anti-leaching and soil degradation agents. Thus wood vinegar and tar can have sustainable impacts on agricultural sectors and chemical industries especially for developing countries.

scholarly journals Influence of impregnation method on metal retention of CCB-treated wood in slow pyrolysis process

2012 ◽  
Vol 233-234 ◽  
pp. 172-176 ◽  
Author(s):  
Silao Espérance Kinata ◽  
Khaled Loubar ◽  
Amine Bouslamti ◽  
Christophe Belloncle ◽  
Mohand Tazerout
Keyword(s):  
Treated Wood ◽  
Impregnation Method ◽  
Pyrolysis Process ◽  
Slow Pyrolysis ◽  
Metal Retention

Micro Scale Slow-Pyrolysis Rotary Kiln for Syngas and Char Production From Biomass and Waste: Design and Construction of a Reactor Test Bench

2004 ◽  
Author(s):  
Francesco Fantozzi ◽  
Umberto Desideri
Keyword(s):  
Rotary Kiln ◽  
Internal Combustion Engines ◽  
Pilot Scale ◽  
Combustion Engines ◽  
Pyrolysis Process ◽  
Modeling Tools ◽  
Power Cycles ◽  
Slow Pyrolysis ◽  
The University ◽  
Energy Balances

Slow pyrolysis of waste and biomass may represent an interesting solution for renewable energy conversion in highly regenerative Gas Turbine (GT) or Internal Combustion Engines (ICE) based power cycles. The combined production of a medium LHV gas to fuel the GT or the ICE and of a high LHV byproduct (tar and/or char) that may contribute to maintain the pyrolysis process, makes pyrolysis highly competitive when compared to gasification. Nevertheless few simulations of such integrated plants are available in literature also because of the lack of general and robust modeling tools for the pyrolysis process. A pilot scale rotary kiln pyrolyzer was built at the University of Perugia to investigate the main benefits and drawbacks of the technology. The pyrolyzer will provide the experimental data that are necessary both to evaluate mass and energy balances, and to support the pyrolysis simulation activity that the authors are carrying out. Namely the test rig will provide, for each given quantity and composition of the biomass or waste in input, the gas, char and tar yields and compositions and the energy provided to maintain the process. This paper describes the main features and operational possibilities of the plant.

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