Tunable syngas production from two-stage sorption-enhanced steam gasification of sewage sludge

Xiaoxia Yang; Tao Kan; Amanj Kheradmand; Haimei Xu; Vladimir Strezov; Aibing Yu; Yijiao Jiang

doi:10.1016/j.cej.2020.126069

Tunable syngas production from two-stage sorption-enhanced steam gasification of sewage sludge

Xiaoxia Yang, Tao Kan, Amanj Kheradmand, Haimei Xu, Vladimir Strezov, Aibing Yu, Yijiao Jiang^*

^*Corresponding author for this work

School of Engineering

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

58 Citations (Scopus)

Abstract

Syngas, a mixture of hydrogen (H₂) and carbon monoxide (CO), has attracted increasing attention since it is a versatile and flexible platform feedstock for the production of value-added chemicals and fuels via Fischer-Tropsch synthesis. Syngas production from biomass gasification has been widely investigated, while the lack of tunable H₂/CO ratio in the syngas limits the direct industrial application of biomass-derived syngas. By incorporation of steam gasification into the first stage of the two-stage sorption-enhanced steam gasification (SESG) of sewage sludge (SS), the H₂/CO ratio of produced syngas is tunable from 0.9 to 4.7 by controlling the CaO and steam contents. The SS sample with a CaO/SS mass ratio of 3:7 produces an H₂-rich gas stream (72.2 vol% purity) at the first stage (550 °C) and CO-rich gas stream (60.5 vol% purity) at the subsequent second stage (750 °C), providing a new promising approach to directly integrate the two-stage SESG of biomass with the syngas application where H₂ and CO could be mixed in desirable ratios for the downstream synthesis of value-added chemicals and fuels. The high distribution of carbon and hydrogen in the tar indicates that the two-stage SESG has a great potential to promote the decomposition of tar for enhanced syngas production.

Original language	English
Article number	126069
Pages (from-to)	1-8
Number of pages	8
Journal	Chemical Engineering Journal
Volume	404
DOIs	https://doi.org/10.1016/j.cej.2020.126069
Publication status	Published - 15 Jan 2021

Keywords

Sewage sludge
Steam gasification
Sorption-enhanced
CaO
Tunable syngas

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10.1016/j.cej.2020.126069

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title = "Tunable syngas production from two-stage sorption-enhanced steam gasification of sewage sludge",

abstract = "Syngas, a mixture of hydrogen (H2) and carbon monoxide (CO), has attracted increasing attention since it is a versatile and flexible platform feedstock for the production of value-added chemicals and fuels via Fischer-Tropsch synthesis. Syngas production from biomass gasification has been widely investigated, while the lack of tunable H2/CO ratio in the syngas limits the direct industrial application of biomass-derived syngas. By incorporation of steam gasification into the first stage of the two-stage sorption-enhanced steam gasification (SESG) of sewage sludge (SS), the H2/CO ratio of produced syngas is tunable from 0.9 to 4.7 by controlling the CaO and steam contents. The SS sample with a CaO/SS mass ratio of 3:7 produces an H2-rich gas stream (72.2 vol\% purity) at the first stage (550 °C) and CO-rich gas stream (60.5 vol\% purity) at the subsequent second stage (750 °C), providing a new promising approach to directly integrate the two-stage SESG of biomass with the syngas application where H2 and CO could be mixed in desirable ratios for the downstream synthesis of value-added chemicals and fuels. The high distribution of carbon and hydrogen in the tar indicates that the two-stage SESG has a great potential to promote the decomposition of tar for enhanced syngas production.",

keywords = "Sewage sludge, Steam gasification, Sorption-enhanced, CaO, Tunable syngas",

author = "Xiaoxia Yang and Tao Kan and Amanj Kheradmand and Haimei Xu and Vladimir Strezov and Aibing Yu and Yijiao Jiang",

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T1 - Tunable syngas production from two-stage sorption-enhanced steam gasification of sewage sludge

AU - Yang, Xiaoxia

AU - Kan, Tao

AU - Kheradmand, Amanj

AU - Xu, Haimei

AU - Strezov, Vladimir

AU - Yu, Aibing

AU - Jiang, Yijiao

PY - 2021/1/15

Y1 - 2021/1/15

N2 - Syngas, a mixture of hydrogen (H2) and carbon monoxide (CO), has attracted increasing attention since it is a versatile and flexible platform feedstock for the production of value-added chemicals and fuels via Fischer-Tropsch synthesis. Syngas production from biomass gasification has been widely investigated, while the lack of tunable H2/CO ratio in the syngas limits the direct industrial application of biomass-derived syngas. By incorporation of steam gasification into the first stage of the two-stage sorption-enhanced steam gasification (SESG) of sewage sludge (SS), the H2/CO ratio of produced syngas is tunable from 0.9 to 4.7 by controlling the CaO and steam contents. The SS sample with a CaO/SS mass ratio of 3:7 produces an H2-rich gas stream (72.2 vol% purity) at the first stage (550 °C) and CO-rich gas stream (60.5 vol% purity) at the subsequent second stage (750 °C), providing a new promising approach to directly integrate the two-stage SESG of biomass with the syngas application where H2 and CO could be mixed in desirable ratios for the downstream synthesis of value-added chemicals and fuels. The high distribution of carbon and hydrogen in the tar indicates that the two-stage SESG has a great potential to promote the decomposition of tar for enhanced syngas production.

AB - Syngas, a mixture of hydrogen (H2) and carbon monoxide (CO), has attracted increasing attention since it is a versatile and flexible platform feedstock for the production of value-added chemicals and fuels via Fischer-Tropsch synthesis. Syngas production from biomass gasification has been widely investigated, while the lack of tunable H2/CO ratio in the syngas limits the direct industrial application of biomass-derived syngas. By incorporation of steam gasification into the first stage of the two-stage sorption-enhanced steam gasification (SESG) of sewage sludge (SS), the H2/CO ratio of produced syngas is tunable from 0.9 to 4.7 by controlling the CaO and steam contents. The SS sample with a CaO/SS mass ratio of 3:7 produces an H2-rich gas stream (72.2 vol% purity) at the first stage (550 °C) and CO-rich gas stream (60.5 vol% purity) at the subsequent second stage (750 °C), providing a new promising approach to directly integrate the two-stage SESG of biomass with the syngas application where H2 and CO could be mixed in desirable ratios for the downstream synthesis of value-added chemicals and fuels. The high distribution of carbon and hydrogen in the tar indicates that the two-stage SESG has a great potential to promote the decomposition of tar for enhanced syngas production.

KW - Sewage sludge

KW - Steam gasification

KW - Sorption-enhanced

KW - CaO

KW - Tunable syngas

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UR - http://purl.org/au-research/grants/arc/IH140100035

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DO - 10.1016/j.cej.2020.126069

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SP - 1

EP - 8

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 126069

ER -

Tunable syngas production from two-stage sorption-enhanced steam gasification of sewage sludge

Abstract

Keywords

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ARC Research Hub for Computational Particle Technology

Waste to resource conversion from lime-dried sewage sludge particles

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Tunable syngas production from two-stage sorption-enhanced steam gasification of sewage sludge

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Projects

ARC Research Hub for Computational Particle Technology

Waste to resource conversion from lime-dried sewage sludge particles

Cite this