Biomass,heralded as sustainable“green coal”,plays a crucial role in energy conservation and achieving“dual carbon”objectives through clean conversion.This paper reviews advancements in biomass catalytic gasificati...Biomass,heralded as sustainable“green coal”,plays a crucial role in energy conservation and achieving“dual carbon”objectives through clean conversion.This paper reviews advancements in biomass catalytic gasification,a technology pivotal for converting biomass to hydrogen-rich fuel and syngas.It highlights the efficiency gains afforded by various catalysts,including natural minerals,alkali metals,nickel-based compounds,zeolites,and rare earth-modified composites.The focus is on their influence on hydrogen output,syngas quality,and tar reduction.The synthesis of these insights paves the way for novel catalyst development and optimized gasification processes,hence advancing catalytic gasification technology toward more sustainable energy solutions.展开更多
The objective of this study was to evaluate the performance of an in-chamber tar cracking and syngas reforming unit.This unit was composed of a two-stage tubular reactor placed within the combustion zone of an updraft...The objective of this study was to evaluate the performance of an in-chamber tar cracking and syngas reforming unit.This unit was composed of a two-stage tubular reactor placed within the combustion zone of an updraft biomass gasifier.Heat generated in the exothermic combustion reactions of biomass gasification drove tar cracking and syngas reforming in the tubes,eliminating the need of external heating.The performance of the unit was evaluated using char-supported NiO catalysts and was found to be very effective in tar removal and syngas composition enhancement.A tar removal rate of 95% was achieved at 0.3 s residence time and 10%nickel loading.This condition also gave syngas high-heating value increment of 36%(to 7.3 MJ/m^(3)).The effect of gas residence time and Ni loading on tar removal and syngas composition of the unit was also studied.Gas residence of 0.2-0.3 s and Ni loading of 5%-10% were found appropriate to produce clean syngas with tar content appropriate for industrial applications(<0.6 g/m^(3))in an updraft biomass gasifier without external heating.展开更多
Biomass gasification using laterite nickel ore(LNO)as bed material is helpful to reduce tar yield and improve gasification performance.In this study,the biomass tobacco stalk(TS)gasification experiment was carried out...Biomass gasification using laterite nickel ore(LNO)as bed material is helpful to reduce tar yield and improve gasification performance.In this study,the biomass tobacco stalk(TS)gasification experiment was carried out at 650°C in a laboratory-scale fluidized bed reactor using laterite nickel ore as gasification bed material.The effect of mass ratio of bed material to raw material(defined as R)on gasification characteristics was studied.The results show that the addition of LNO significantly enhances the tar cracking reaction during the gasification process;the tar yield decreases;the syngas yield increases,and the components are optimized.When R is 1.62,the maximum effective gas yield is 0.26 m^(3)/kg,and the minimum tar yield is 16.20 mg/kg.With the increase of R,the aromatic properties of tar are weakened;polycyclic aromatic hydrocarbons are transformed into monocyclic aromatic hydrocarbons and alicyclic compounds,and the types of tar components are reduced.These results provide an optimal method for the design of biomass fluidized-bed gasification experiment using laterite nickel ore as bed material.展开更多
基金supported by the National Natural Science Foundation of China(52160013,51768054)Inner Mongolia Autonomous Region"Grassland Talent"Science Fund Program(CYY012057)+2 种基金Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region(NJYT22062)Inner Mongolia Natural Science Foundation(2021LHMS05026)Inner Mongolia University Research Program(2023RCTD018,2023YXXS023,2024YXXS047).
文摘Biomass,heralded as sustainable“green coal”,plays a crucial role in energy conservation and achieving“dual carbon”objectives through clean conversion.This paper reviews advancements in biomass catalytic gasification,a technology pivotal for converting biomass to hydrogen-rich fuel and syngas.It highlights the efficiency gains afforded by various catalysts,including natural minerals,alkali metals,nickel-based compounds,zeolites,and rare earth-modified composites.The focus is on their influence on hydrogen output,syngas quality,and tar reduction.The synthesis of these insights paves the way for novel catalyst development and optimized gasification processes,hence advancing catalytic gasification technology toward more sustainable energy solutions.
基金supported by the U.S.Department of Agriculture and Sun Grant(Award No.2010-38502-21836 and Subaward No.AB-5-67630.KSU11)the startup fund of North Carolina State Universitypartially supported by the scholarship program of IFARHU-SENACYT from the Government of Panama.
文摘The objective of this study was to evaluate the performance of an in-chamber tar cracking and syngas reforming unit.This unit was composed of a two-stage tubular reactor placed within the combustion zone of an updraft biomass gasifier.Heat generated in the exothermic combustion reactions of biomass gasification drove tar cracking and syngas reforming in the tubes,eliminating the need of external heating.The performance of the unit was evaluated using char-supported NiO catalysts and was found to be very effective in tar removal and syngas composition enhancement.A tar removal rate of 95% was achieved at 0.3 s residence time and 10%nickel loading.This condition also gave syngas high-heating value increment of 36%(to 7.3 MJ/m^(3)).The effect of gas residence time and Ni loading on tar removal and syngas composition of the unit was also studied.Gas residence of 0.2-0.3 s and Ni loading of 5%-10% were found appropriate to produce clean syngas with tar content appropriate for industrial applications(<0.6 g/m^(3))in an updraft biomass gasifier without external heating.
基金financially supported by the“Clean Combustion and Low-carbon Utilization of Coal”(XDA29020100),the strategic priority research program of Chinese Academy of Sciences.
文摘Biomass gasification using laterite nickel ore(LNO)as bed material is helpful to reduce tar yield and improve gasification performance.In this study,the biomass tobacco stalk(TS)gasification experiment was carried out at 650°C in a laboratory-scale fluidized bed reactor using laterite nickel ore as gasification bed material.The effect of mass ratio of bed material to raw material(defined as R)on gasification characteristics was studied.The results show that the addition of LNO significantly enhances the tar cracking reaction during the gasification process;the tar yield decreases;the syngas yield increases,and the components are optimized.When R is 1.62,the maximum effective gas yield is 0.26 m^(3)/kg,and the minimum tar yield is 16.20 mg/kg.With the increase of R,the aromatic properties of tar are weakened;polycyclic aromatic hydrocarbons are transformed into monocyclic aromatic hydrocarbons and alicyclic compounds,and the types of tar components are reduced.These results provide an optimal method for the design of biomass fluidized-bed gasification experiment using laterite nickel ore as bed material.
