Influence of Potassic Additives on Sludge Gasification Under Model Flue Gas Atmosphere

Mi Yan; Jie Lin; Ekkachai Kanchanatip; Sicheng Zhang; Guobin Wang; Dwi Hantoko; Haryo Wibowo; Yanjun Hu

doi:10.1007/s12649-019-00644-7

Influence of Potassic Additives on Sludge Gasification Under Model Flue Gas Atmosphere

Mi Yan, Jie Lin, Ekkachai Kanchanatip^*, Sicheng Zhang, Guobin Wang, Dwi Hantoko, Haryo Wibowo, Yanjun Hu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

In this study, the influence of potassic additives (K₂CO₃ and biomass ash (BA)) on sludge gasification under model flue gases was investigated. Two model gases consisting of O₂/CO₂/N₂ and O₂/CO₂/H₂O/N₂ were used as gasifying agents. Under O₂/CO₂/N₂ atmosphere, the lower heating values (LHV) of produced gas were in a range of 3.07–3.79 MJ/Nm³, and cold gas efficiency (CGE) were in a range of 47–66%. When steam was introduced into the gasification atmosphere, the efficiency of the process significantly improved. LHV of the produced gas under O₂/CO₂/H₂O/N₂ atmosphere was in a range of 6.48–7.18 MJ/Nm³, and CGE was in a range of 73–88%. K₂CO₃ had an obvious catalytic effect on sludge gasification process. Additionally, K₂CO₃ had stronger catalytic effect under steam-free atmosphere and it was better in promoting CO generation when compared with BA. BA exhibited the ability to increase gas yield under steam-free atmosphere, while it only had a slight effect under steam-containing atmosphere. Based on continuous monitoring of gas during gasification process, LHV of the produced gas could be increased by nearly twofold, possibly up to 11.96 MJ/Nm³, by controlling the proper reaction time (10–12 min) to prevent the dilution effect from excessive gasifying agents.

Original language	English
Pages (from-to)	3629-3637
Number of pages	9
Journal	Waste and Biomass Valorization
Volume	11
Issue number	7
DOIs	https://doi.org/10.1007/s12649-019-00644-7
State	Published - 1 Jul 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019, Springer Nature B.V.

Keywords

CO
Gasification
Potassic additives
Sludge
Syngas

ASJC Scopus subject areas

Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s12649-019-00644-7

Cite this

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title = "Influence of Potassic Additives on Sludge Gasification Under Model Flue Gas Atmosphere",

abstract = "In this study, the influence of potassic additives (K2CO3 and biomass ash (BA)) on sludge gasification under model flue gases was investigated. Two model gases consisting of O2/CO2/N2 and O2/CO2/H2O/N2 were used as gasifying agents. Under O2/CO2/N2 atmosphere, the lower heating values (LHV) of produced gas were in a range of 3.07–3.79 MJ/Nm3, and cold gas efficiency (CGE) were in a range of 47–66\%. When steam was introduced into the gasification atmosphere, the efficiency of the process significantly improved. LHV of the produced gas under O2/CO2/H2O/N2 atmosphere was in a range of 6.48–7.18 MJ/Nm3, and CGE was in a range of 73–88\%. K2CO3 had an obvious catalytic effect on sludge gasification process. Additionally, K2CO3 had stronger catalytic effect under steam-free atmosphere and it was better in promoting CO generation when compared with BA. BA exhibited the ability to increase gas yield under steam-free atmosphere, while it only had a slight effect under steam-containing atmosphere. Based on continuous monitoring of gas during gasification process, LHV of the produced gas could be increased by nearly twofold, possibly up to 11.96 MJ/Nm3, by controlling the proper reaction time (10–12 min) to prevent the dilution effect from excessive gasifying agents.",

keywords = "CO, Gasification, Potassic additives, Sludge, Syngas",

author = "Mi Yan and Jie Lin and Ekkachai Kanchanatip and Sicheng Zhang and Guobin Wang and Dwi Hantoko and Haryo Wibowo and Yanjun Hu",

note = "Publisher Copyright: {\textcopyright} 2019, Springer Nature B.V.",

year = "2020",

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doi = "10.1007/s12649-019-00644-7",

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AU - Yan, Mi

AU - Lin, Jie

AU - Kanchanatip, Ekkachai

AU - Zhang, Sicheng

AU - Wang, Guobin

AU - Hantoko, Dwi

AU - Wibowo, Haryo

AU - Hu, Yanjun

PY - 2020/7/1

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N2 - In this study, the influence of potassic additives (K2CO3 and biomass ash (BA)) on sludge gasification under model flue gases was investigated. Two model gases consisting of O2/CO2/N2 and O2/CO2/H2O/N2 were used as gasifying agents. Under O2/CO2/N2 atmosphere, the lower heating values (LHV) of produced gas were in a range of 3.07–3.79 MJ/Nm3, and cold gas efficiency (CGE) were in a range of 47–66%. When steam was introduced into the gasification atmosphere, the efficiency of the process significantly improved. LHV of the produced gas under O2/CO2/H2O/N2 atmosphere was in a range of 6.48–7.18 MJ/Nm3, and CGE was in a range of 73–88%. K2CO3 had an obvious catalytic effect on sludge gasification process. Additionally, K2CO3 had stronger catalytic effect under steam-free atmosphere and it was better in promoting CO generation when compared with BA. BA exhibited the ability to increase gas yield under steam-free atmosphere, while it only had a slight effect under steam-containing atmosphere. Based on continuous monitoring of gas during gasification process, LHV of the produced gas could be increased by nearly twofold, possibly up to 11.96 MJ/Nm3, by controlling the proper reaction time (10–12 min) to prevent the dilution effect from excessive gasifying agents.

AB - In this study, the influence of potassic additives (K2CO3 and biomass ash (BA)) on sludge gasification under model flue gases was investigated. Two model gases consisting of O2/CO2/N2 and O2/CO2/H2O/N2 were used as gasifying agents. Under O2/CO2/N2 atmosphere, the lower heating values (LHV) of produced gas were in a range of 3.07–3.79 MJ/Nm3, and cold gas efficiency (CGE) were in a range of 47–66%. When steam was introduced into the gasification atmosphere, the efficiency of the process significantly improved. LHV of the produced gas under O2/CO2/H2O/N2 atmosphere was in a range of 6.48–7.18 MJ/Nm3, and CGE was in a range of 73–88%. K2CO3 had an obvious catalytic effect on sludge gasification process. Additionally, K2CO3 had stronger catalytic effect under steam-free atmosphere and it was better in promoting CO generation when compared with BA. BA exhibited the ability to increase gas yield under steam-free atmosphere, while it only had a slight effect under steam-containing atmosphere. Based on continuous monitoring of gas during gasification process, LHV of the produced gas could be increased by nearly twofold, possibly up to 11.96 MJ/Nm3, by controlling the proper reaction time (10–12 min) to prevent the dilution effect from excessive gasifying agents.

KW - CO

KW - Gasification

KW - Potassic additives

KW - Sludge

KW - Syngas

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JO - Waste and Biomass Valorization

JF - Waste and Biomass Valorization

IS - 7

ER -

Influence of Potassic Additives on Sludge Gasification Under Model Flue Gas Atmosphere

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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