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

21 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 1 2012
Externally published	Yes

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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

Cite this

Wijayanta, A. T., Saiful Alam, M., Nakaso, K., Fukai, J., & Shimizu, M. (2012). Optimized combustion of biomass volatiles by varying O ₂ and CO ₂ levels: A numerical simulation using a highly detailed soot formation reaction mechanism. Bioresource Technology, 110, 645-651. https://doi.org/10.1016/j.biortech.2012.01.068

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

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.",

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AU - Fukai, Jun

AU - Shimizu, Masakata

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AB - 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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10.1016/j.biortech.2012.01.068