Enhanced looping biomass/vapour gasification utilizing waste heat from molten copper slags

Huang，Jintao1,2,3; Lyu，Sha2; Han，He2; Wang，Yanjiang2; Sun，Haoyang2; Su，Jingtao1; Liu，Yidong1; Min，Yonggang1; Sun，Dazhi2

2022-08-01

10.1016/j.energy.2022.123962

ENERGY   影响因子和分区

0360-5442

1873-6785

The syngas generation from biomass/vapour pyrolysis wih molten copper slag is an innovative technology in chemical industry. Copper slag and rice straws are representative undervalued trashes as metallurgical and agricultural by-products. But the inappropriate handling of them, including direct burying or open burning, could severely aggregate environmental pollution. This present study investigated the biomass pyrolysis integrating waste heat from molten copper slags through carbon-loops extension. The mechanism of integrated looping gasification was identified, where the effects of the mass ratio of FeO/SiO, minor elements contents of (AlO+CaO), operational temperature and pressure on target syngas yields were systematically explored through thermodynamic calculation and experimental results. Thermodynamics calculations confirmed that increased mass ratio of FeO/SiO (higher than 1.5) and minor elements contents showed obvious catalytic effect on syngas generations, promoted, accompanied with obvious reduction of air pollutants emission. Since FeO favoured solid biomass conversion into syngas, exergy efficiency of generated syngas increased as the mass ratio of FeO/SiO was enhanced. Non-isothermal experiments confirmed the incorporation of FS1-5 and FS5-1 obviously undermined the polluting gas yields, which were in overall agreement with thermodynamics results. Meanwhile, the solid ash waste could serve as raw materials for soil nutrients, and the generated syngas could be utilized for electricity generation, based on which an integrated and sustainable looping system would be proposed. Therefore, the favourable results could thus provide significant insights for deepened understanding of biomass gasification as well as the efficient utilization of rice straw and copper slag.

Biomass gasification Copper slag Exergy analysis

SCI ; EI

英语

通讯

National Natural Science Foundation of China[52003111];

Thermodynamics ; Energy & Fuels

Thermodynamics ; Energy & Fuels

WOS:000800403200003

PERGAMON-ELSEVIER SCIENCE LTD

20221812056713

Alumina ; Aluminum oxide ; Bioconversion ; Biomass ; Chemical industry ; Copper ; Exergy ; Gasification ; Pyrolysis ; Silicon ; Slags ; Synthesis gas ; Waste heat

Energy Losses (industrial and residential):525.4 ; Copper:544.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Thermodynamics:641.1 ; Biochemistry:801.2 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Chemical Engineering, General:805

ENGINEERING

2-s2.0-85129049217

Scopus

1.Department of Polymeric Materials and Engineering,School of Materials and Energy,Guangdong University of Technology,Guangzhou,510006,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Key Laboratory of Polymer Processing Engineering (South China University of Technology),Ministry of Education,Guangzhou,510640,China

Huang，Jintao,Lyu，Sha,Han，He,et al. Enhanced looping biomass/vapour gasification utilizing waste heat from molten copper slags[J]. ENERGY,2022,252.

Huang，Jintao.,Lyu，Sha.,Han，He.,Wang，Yanjiang.,Sun，Haoyang.,...&Sun，Dazhi.(2022).Enhanced looping biomass/vapour gasification utilizing waste heat from molten copper slags.ENERGY,252.

Huang，Jintao,et al."Enhanced looping biomass/vapour gasification utilizing waste heat from molten copper slags".ENERGY 252(2022).