Optimized combustion of biomass volatiles by varying O 2 and CO 2 levels: A numerical simulation using a highly detailed soot formation reaction mechanism

Agung Tri Wijayanta; Md Saiful Alam; Koichi Nakaso; Jun Fukai; Masakata Shimizu

doi:10.1016/j.biortech.2012.01.068

Optimized combustion of biomass volatiles by varying O ₂ and CO ₂ levels: A numerical simulation using a highly detailed soot formation reaction mechanism

Agung Tri Wijayanta, Md Saiful Alam, Koichi Nakaso, Jun Fukai, Masakata Shimizu

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

26 Citations (Scopus)

Abstract

To increase syngas production and minimize soot, polycyclic aromatic hydrocarbon (PAH), and CO ₂ emissions resulting from biomass combustion, the evolution of biomass volatiles during O ₂/CO ₂ gasification was simulated. A highly detailed soot formation reaction mechanism flowing through the reactor, involving 276 species, 2158 conventional gas phase reactions and 1635 surface phase reactions, was modeled as a plug flow reactor (PFR). The reaction temperature and pressure were varied in the range 1073-1873K and 0.1-2MPa. The effect of temperature on product concentration was more emphasized than that of pressure. The effect of O ₂/CO ₂ input on product concentration was investigated. O ₂ concentration was important in reducing PAHs at low temperature. Below 1473K, an increase in the O ₂ concentration decreased PAH and soot production. However, if the target of CO ₂ concentration was higher than 0.22 in mass fraction terms, temperatures above 1473K reduced PAHs and increased CO.

Original language	English
Pages (from-to)	645-651
Number of pages	7
Journal	Bioresource Technology
Volume	110
DOIs	https://doi.org/10.1016/j.biortech.2012.01.068
Publication status	Published - Apr 2012
Externally published	Yes

Keywords

Biomass volatiles
O /CO gasification
Polycyclic aromatic hydrocarbon
Reaction mechanism
Soot formation

ASJC Scopus subject areas

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

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Optimized combustion of biomass volatiles by varying O ₂ and CO ₂ levels : A numerical simulation using a highly detailed soot formation reaction mechanism. / Wijayanta, Agung Tri; Saiful Alam, Md; Nakaso, Koichi; Fukai, Jun; Shimizu, Masakata.

In: Bioresource Technology, Vol. 110, 04.2012, p. 645-651.

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

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abstract = "To increase syngas production and minimize soot, polycyclic aromatic hydrocarbon (PAH), and CO 2 emissions resulting from biomass combustion, the evolution of biomass volatiles during O 2/CO 2 gasification was simulated. A highly detailed soot formation reaction mechanism flowing through the reactor, involving 276 species, 2158 conventional gas phase reactions and 1635 surface phase reactions, was modeled as a plug flow reactor (PFR). The reaction temperature and pressure were varied in the range 1073-1873K and 0.1-2MPa. The effect of temperature on product concentration was more emphasized than that of pressure. The effect of O 2/CO 2 input on product concentration was investigated. O 2 concentration was important in reducing PAHs at low temperature. Below 1473K, an increase in the O 2 concentration decreased PAH and soot production. However, if the target of CO 2 concentration was higher than 0.22 in mass fraction terms, temperatures above 1473K reduced PAHs and increased CO.",

keywords = "Biomass volatiles, O /CO gasification, Polycyclic aromatic hydrocarbon, Reaction mechanism, Soot formation",

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AU - Nakaso, Koichi

AU - Fukai, Jun

AU - Shimizu, Masakata

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N2 - To increase syngas production and minimize soot, polycyclic aromatic hydrocarbon (PAH), and CO 2 emissions resulting from biomass combustion, the evolution of biomass volatiles during O 2/CO 2 gasification was simulated. A highly detailed soot formation reaction mechanism flowing through the reactor, involving 276 species, 2158 conventional gas phase reactions and 1635 surface phase reactions, was modeled as a plug flow reactor (PFR). The reaction temperature and pressure were varied in the range 1073-1873K and 0.1-2MPa. The effect of temperature on product concentration was more emphasized than that of pressure. The effect of O 2/CO 2 input on product concentration was investigated. O 2 concentration was important in reducing PAHs at low temperature. Below 1473K, an increase in the O 2 concentration decreased PAH and soot production. However, if the target of CO 2 concentration was higher than 0.22 in mass fraction terms, temperatures above 1473K reduced PAHs and increased CO.

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