NUMERICAL SIMULATION RESEARCH OF BIOMASS H2O/CO2 GASIFICATION IN DOWNDRAFT FIXED BED

Zheng Zhihang; Zhang Jiayuan; Li Qian; Zhou Haoyu

doi:10.19912/j.0254-0096.tynxb.2020-0925

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (5) : 377-382. DOI: 10.19912/j.0254-0096.tynxb.2020-0925

NUMERICAL SIMULATION RESEARCH OF BIOMASS H₂O/CO₂ GASIFICATION IN DOWNDRAFT FIXED BED

Zheng Zhihang¹, Zhang Jiayuan¹, Li Qian², Zhou Haoyu²

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Abstract

The gasification model of dry birch sawdust in downdraft fixed bed gasifier is established by Aspen Plus software, and the simulation results are in good agreement with the literature values. The sensitivity analysis module of Aspen Plus is used to simulate the effect of gasifier/biomass carbon ratio （GC value） on gasification results when steam （H₂O） and carbon dioxide （CO₂） are used as the gasification agent, and the co-gasification of H₂O and CO₂ is studied in combination with their characteristics. The results show that hydrogen rich gas can be obtained during H₂O gasification, but the net CO₂ emission is higher. Carbon conversion and cold gas efficiency are lower during CO₂ gasification, but net CO₂ emission is lower. The co-gasification of H₂O and CO₂ reduces the carbon conversion and cold gas efficiency slightly, but it effectively reduces the net CO₂ emission in the gasification system.

Key words

biomass energy / sensitivity analysis / gasification / downdraft fixed bed / net CO₂ emission

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Zheng Zhihang, Zhang Jiayuan, Li Qian, Zhou Haoyu. NUMERICAL SIMULATION RESEARCH OF BIOMASS H₂O/CO₂ GASIFICATION IN DOWNDRAFT FIXED BED[J]. Acta Energiae Solaris Sinica. 2022, 43(5): 377-382 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0925

References

[1] RAQUEL T A, ELISEU M B C, FOUZI T D, et al. Numerical investigation of optimum operating conditions for syngas and hydrogen production from biomass gasification using Aspen Plus[J]. Renewable energy, 2020, 146: 1309-1314.
[2] PALA L P R, WANG Q, KOLB G, et al. Steam gasification of biomass with subsequent syngas adjustment using shift reaction for syngas production: an Aspen Plus model[J]. Renewable energy, 2017, 101: 484-492.
[3] HAN J, LIANG Y, HU J, et al.Modeling downdraft biomass gasification process by restricting chemical reaction equilibrium with Aspen Plus[J]. Energy conversion and management, 2017, 153: 641-648.
[4] DOHERTY W, REYNOLDS A, KENNEDY D.The effect of air preheating in a biomass CFB gasifier using ASPEN Plus simulation[J]. Biomass & bioenergy, 2009, 33(9): 1158-1167.
[5] 赵向富. 生物质流化床气化实验研究与模拟[D]. 武汉:华中科技大学, 2006.
ZHAO X F.Experimental Study and modeling of biomass gasification in fluidized bed[D]. Wuhan: Huazhong University of Science & Technology, 2006.
[6] 苏德仁, 周肇秋, 谢建军, 等. 生物质流化床富氧-水蒸气气化制备合成气研究[J]. 农业机械学报, 2011, 42(3): 100-104.
SU D R, ZHOU Z Q, XIE J J, et al.Biomass oxygen enriched-steam gasification in an atmospheric fluidized bed for syngas production[J]. Transactions of the Chinese Society of Agricultural Machinery, 2011, 42(3): 100-104.
[7] GAGLIANO A, NOCERA F, BRUNO M, et al.Development of an equilibrium-based model of gasification of biomass by Aspen Plus[J]. Energy procedia, 2017, 111: 1010-1019.
[8] 郑志行, 李谦, 张家元, 等. 基于Aspen Plus的Shell气流床工业气化炉模拟[J]. 化工进展, 2021, 40(4): 2152-2160.
ZHENG Z H, LI Q, ZHANG J Y, et al.Simulation of industrial Shell entrained flow bed by Aspen Plus[J]. Chemical industry and engineering progress, 2021, 40(4): 2152-2160.
[9] 安金卉. 生物质气化过程模拟研究[D]. 郑州: 郑州大学, 2012.
AN J H.Simulation study of biomass gasification[D]. Zhengzhou: Zhengzhou University, 2012.
[10] ADNAN M A, HOSSAIN M M.Gasification performance of various microalgae biomass—a thermodynamic study by considering tar formation using Aspen Plus[J]. Energy conversion and management, 2018, 165: 783-793.
[11] 梁奎. 上吸式生物质空气气化及焦油低减技术研究[D]. 哈尔滨: 哈尔滨工业大学, 2008.
LIANG K.Study of updraft biomass air gasification and tar-reducing technology[D]. Harbin: Harbin Institute of Technology, 2008.
[12] RUPESH S, MURALEEDHARAN C, ARUN P.Aspen Plus modelling of air-steam gasification of biomass with sorbent enabled CO₂ capture[J]. Resource efficient technologies, 2016, 2(2): 94-103.