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Energy conversion assessment of vacuum, slow and fast pyrolysis processes for low and high ash paper waste sludge
- Source :
- Energy Conversion and Management, Energy Conversion and Management, Elsevier, 2016, 111, pp.103-114, Energy Conversion And Management, Artículos CONICYT, CONICYT Chile, instacron:CONICYT
- Publication Year :
- 2016
- Publisher :
- HAL CCSD, 2016.
-
Abstract
- The performance of vacuum, slow and fast pyrolysis processes to transfer energy from the paper waste sludge (PWS) to liquid and solid products was compared. Paper waste sludges with low and high ash content (8.5 and 46.7 wt.%) were converted under optimised conditions for temperature and pellet size to maximise both product yields and energy content. Comparison of the gross energy conversions, as a combination of the bio-oil/tarry phase and char (ECsum), revealed that the fast pyrolysis performance was between 18.5% and 20.1% higher for the low ash PWS, and 18.4% and 36.5% higher for high ash PWS, when compared to the slow and vacuum pyrolysis processes respectively. For both PWSs, this finding was mainly attributed to higher production of condensable organic compounds and lower water yields during FP. The low ash PWS chars, fast pyrolysis bio-oils and vacuum pyrolysis tarry phase products had high calorific values (∼18-23 MJ kg-1) making them promising for energy applications. Considering the low calorific values of the chars from alternative pyrolysis processes (∼4-7 MJ kg-1), the high ash PWS should rather be converted to fast pyrolysis bio-oil to maximise the recovery of usable energy products.
- Subjects :
- Materials science
Waste management
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering
Renewable Energy, Sustainability and the Environment
Pellet size
020209 energy
Energy transfer
Energy Engineering and Power Technology
02 engineering and technology
7. Clean energy
Fuel Technology
Nuclear Energy and Engineering
13. Climate action
Phase (matter)
0202 electrical engineering, electronic engineering, information engineering
Energy density
Energy transformation
[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Char
Pyrolysis
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- Language :
- English
- ISSN :
- 01968904
- Database :
- OpenAIRE
- Journal :
- Energy Conversion and Management, Energy Conversion and Management, Elsevier, 2016, 111, pp.103-114, Energy Conversion And Management, Artículos CONICYT, CONICYT Chile, instacron:CONICYT
- Accession number :
- edsair.doi.dedup.....bf8d97871d01e8e428968ae0c291c103