Gasification of a Dried Sewage Sludge in a Laboratory Scale Fixed Bed Reactor

Sebastian Werle

doi:10.1016/j.egypro.2015.02.046

Gasification of a Dried Sewage Sludge in a Laboratory Scale Fixed Bed Reactor

Sebastian Werle

Department of Thermal Technology (RIE/RIE6)

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

The paper present study on the air gasification process of dried sewage sludge. Parameters such as air ratio λ=0.12÷0.27, air temperature t=50^oC÷250^oC and molar fraction of O₂ in gasification agent z_O2=0.21 and z_O2>0.2) were found to influence on the syngas parameters: Lower Heating Value (LHV) and composition. The results indicate that the syngas LHV was found to decrease with increase air ratio for all analyzed cases. Increasing O₂ concentration in gasification agent increased the temperature, which tended to favour the formation of smaller molecular components in the gas mixture. Thus, the enriched air medium produced a gas with a higher LHV. In contrast to conventional gasification, a process with a preheated gasification agent causes that the flux of heat necessary to support endothermic gasification reactions is producing more effective. As a result, H₂ and CO production is promoted.

Original language	English
Pages (from-to)	253-256
Number of pages	4
Journal	Physics Procedia
Volume	66
DOIs	https://doi.org/10.1016/j.egypro.2015.02.046
Publication status	Published - 2015
Event	23rd International Conference on the Application of Accelerators in Research and Industry, CAARI 2014 - San Antonio, United States Duration: 25 May 2014 → 30 May 2014

Keywords

gasification
gasification agent parameters
sewage sludge
syngas properites

ASJC Scopus subject areas

General Physics and Astronomy

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10.1016/j.egypro.2015.02.046

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@article{36e7eeb9051c46efa9310ed4bd1f6b1d,

title = "Gasification of a Dried Sewage Sludge in a Laboratory Scale Fixed Bed Reactor",

abstract = "The paper present study on the air gasification process of dried sewage sludge. Parameters such as air ratio λ=0.12{\textdiv}0.27, air temperature t=50oC{\textdiv}250oC and molar fraction of O2 in gasification agent zO2=0.21 and zO2>0.2) were found to influence on the syngas parameters: Lower Heating Value (LHV) and composition. The results indicate that the syngas LHV was found to decrease with increase air ratio for all analyzed cases. Increasing O2 concentration in gasification agent increased the temperature, which tended to favour the formation of smaller molecular components in the gas mixture. Thus, the enriched air medium produced a gas with a higher LHV. In contrast to conventional gasification, a process with a preheated gasification agent causes that the flux of heat necessary to support endothermic gasification reactions is producing more effective. As a result, H2 and CO production is promoted.",

keywords = "gasification, gasification agent parameters, sewage sludge, syngas properites",

author = "Sebastian Werle",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors. Published by Elsevier Ltd.; 23rd International Conference on the Application of Accelerators in Research and Industry, CAARI 2014 ; Conference date: 25-05-2014 Through 30-05-2014",

year = "2015",

doi = "10.1016/j.egypro.2015.02.046",

language = "English",

volume = "66",

pages = "253--256",

journal = "Physics Procedia",

issn = "1875-3884",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Gasification of a Dried Sewage Sludge in a Laboratory Scale Fixed Bed Reactor

AU - Werle, Sebastian

PY - 2015

Y1 - 2015

N2 - The paper present study on the air gasification process of dried sewage sludge. Parameters such as air ratio λ=0.12÷0.27, air temperature t=50oC÷250oC and molar fraction of O2 in gasification agent zO2=0.21 and zO2>0.2) were found to influence on the syngas parameters: Lower Heating Value (LHV) and composition. The results indicate that the syngas LHV was found to decrease with increase air ratio for all analyzed cases. Increasing O2 concentration in gasification agent increased the temperature, which tended to favour the formation of smaller molecular components in the gas mixture. Thus, the enriched air medium produced a gas with a higher LHV. In contrast to conventional gasification, a process with a preheated gasification agent causes that the flux of heat necessary to support endothermic gasification reactions is producing more effective. As a result, H2 and CO production is promoted.

AB - The paper present study on the air gasification process of dried sewage sludge. Parameters such as air ratio λ=0.12÷0.27, air temperature t=50oC÷250oC and molar fraction of O2 in gasification agent zO2=0.21 and zO2>0.2) were found to influence on the syngas parameters: Lower Heating Value (LHV) and composition. The results indicate that the syngas LHV was found to decrease with increase air ratio for all analyzed cases. Increasing O2 concentration in gasification agent increased the temperature, which tended to favour the formation of smaller molecular components in the gas mixture. Thus, the enriched air medium produced a gas with a higher LHV. In contrast to conventional gasification, a process with a preheated gasification agent causes that the flux of heat necessary to support endothermic gasification reactions is producing more effective. As a result, H2 and CO production is promoted.

KW - gasification

KW - gasification agent parameters

KW - sewage sludge

KW - syngas properites

UR - https://www.scopus.com/pages/publications/84948411023

U2 - 10.1016/j.egypro.2015.02.046

DO - 10.1016/j.egypro.2015.02.046

M3 - Conference article

AN - SCOPUS:84948411023

SN - 1875-3884

VL - 66

SP - 253

EP - 256

JO - Physics Procedia

JF - Physics Procedia

T2 - 23rd International Conference on the Application of Accelerators in Research and Industry, CAARI 2014

Y2 - 25 May 2014 through 30 May 2014

ER -

Gasification of a Dried Sewage Sludge in a Laboratory Scale Fixed Bed Reactor

Abstract

Keywords

ASJC Scopus subject areas

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