文献类型：期刊文献

英文题名：Pyrolysis characteristics and sulfur transformation of Ascophyllum during microwave fluidized-bed pyrolysis

作者：Xu, Qing[1,2];Chen, Zijian[1];Xian, Shengxian[1,2];Fu, Jingwei[1];Li, Haowei[1];Wu, Yujian[1]

机构：[1]Guangdong Ocean Univ, Coll Ocean Engn & Energy, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang 524088, Peoples R China

年份：2025

卷号：186

外文期刊名：JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

收录：SCI-EXPANDED(收录号：WOS:001409362000001)、、EI(收录号：20250217662564)、Scopus(收录号：2-s2.0-85214336369)、WOS

基金：This work was supported by the National Natural Science Foundation of China (No.52376171) , Guangdong Basic and Applied Basic Research Foundation (2023A1515110541) , the Program for Scientific Research Start-up Funds of Guangdong Ocean University (060302062107) , the Program for Scientific Research Start-up Funds of Guangdong Ocean University (060302072402) and the Zhanjiang Marine Youth Talent Innovation Project (2023E0011) .

语种：英文

外文关键词：Microwave; Fluidization; Ascophyllum; Pyrolysis characteristics; Sulfur transformation

外文摘要：Seaweed is non-cultivated biomass with abundant sources, and its utilization for energy is an important thrust for achieving carbon neutrality. This study explores the pyrolysis of Ascophyllum (AS) using microwave fluidized-bed pyrolysis, comparing it to fixed-bed pyrolysis. Results show that fluidized-bed pyrolysis increases the pyrolysis rate by 10 % and reduces sulfur release by 9.1 %. As temperature and microwave power rise, the yields of H2, CO, and H2S increase, with maximum yields at 800 degrees C/1000 W being 4.23 mmol/g, 4.29 mmol/g, and 0.06 mmol/g, respectively. However, CO2 yield decreases to 3.59 mmol/g at high temperatures or microwave powers due to secondary reactions. High temperature promotes carbon thermal reduction of sulfate, while microwave power inhibits sulfur fixation by surface functional groups on bio-char. Fluidization helps produce low-sulfur bio-oil and bio-gas, and increasing temperature enhances the pyrolysis rate, whereas higher microwave power does not significantly improve sulfur fixation. Despite extensive research on algae biomass pyrolysis, further studies are needed to optimize the process for replacing fossil fuels and meeting global energy demands.