Numerical investigation of biomass and liquefied natural gas driven oxy-fuel combustion power system

Liping Tan, Lei Cai, Yidan Fu, Zining Zhou and Yanwen Guan

Renewable Energy, 2023, vol. 208, issue C, 94-104

Abstract: Biomass as carbon-neutral renewable energy is beneficial for carbon emission reduction in power sectors. A biomass gasification integrated natural gas combined cycle is proposed in this study. Oxy-fuel combustion is utilized to realize CO2 capture with cold energy of liquefied natural gas applied for power consumption reduction. CO2 and H2O in the flue gas are separated and adopted as gasifying agents. The composition of natural gas and gasification syngas injected into the combustion chamber is restricted by the heat value and H2 concentration. The biomass mixing ratio and global energy efficiency under different gasification conditions are evaluated using Aspen Plus software. Increasing CO2 and decreasing H2O flow rate in gasifying agents are positive for increasing biomass mixing ratio which can achieve a maximum of 0.33. Gasification temperature increased from 650 °C to 950 °C causes an evident enhancement in energy efficiency. On the contrary, both biomass mixing ratio and energy efficiency are less sensitive to gasification pressure, particularly at low gasification temperature. The integrated system reaches the highest energy efficiency of 0.520 with a biomass mixing ratio of 0.10. Accordingly, the electricity cost is estimated to be 0.102 $/kWh, and the net CO2 emission considering fuel production is 91.0 g/kWh.

Keywords: Biomass gasification; Liquefied natural gas; Combined cycle; Oxy-fuel combustion; Gasification condition (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148123003002
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:208:y:2023:i:c:p:94-104

DOI: 10.1016/j.renene.2023.03.014

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().