文献类型：期刊文献

英文题名：Study on Greenhouse Gas Emission Characteristics of Fluidized Catalytic Cracking Flue Gas

作者：Zhao, Hai[1];Bian, Jiawei[1];Wang, Bohan[1];Zhao, Jigang[1];Ju, Feng[1,2];Ling, Hao[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Univ Utrecht, Debye Inst Nanomat Sci, Inorgan Chem & Catalysis, NL-3584 CG Utrecht, Netherlands

年份：2023

卷号：62

期号：42

起止页码：17228

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20231513883071);WOS:【SCI-EXPANDED(收录号:WOS:000968338300001)】；

基金：ACKNOWLEDGMENTS The authors thank the National Natural Science Foundation of China (No. 22008071) .

语种：英文

外文关键词：Carbon dioxide - Catalysts - Flues - Fluid catalytic cracking - Fluidization - Fluidized bed combustion - Fluidized beds - Gas emissions - Greenhouse gases - Nitrogen oxides - Oxygen

摘要：The regeneration process of fluid catalytic cracking (FCC) units produces amounts of greenhouse gases (GHGs), including carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4). However, the flue gas GHG emission characteristics of FCC units are not well understood in China. In our work, three typical FCC units are taken as stack tests for CO2, N2O, and CH4 emissions in the flue gas. The on-site monitoring results show that the regenerated form of the FCC unit has the greatest impact on CH4, and CO2 is the primary GHG, with total emissions of >99%. Meanwhile, the spent catalysts are collected for further characterization and regeneration experiments. Results show that the coke content and composition on the spent catalysts can directly affect GHG emissions. The regeneration experiments of spent catalysts at different oxygen contents show that the main emission temperature ranges of CO2, N2O, and CH4 are 200-600 degrees C, 400-600 degrees C, and 300-600 degrees C, respectively. The peaks of CO2 and N2O content in regenerated flue gas increase as the O2 content increases, while CH4 is generated under oxygen free conditions. The study of the GHG emission characteristics can provide theoretical support for the carbon peaking and carbon neutrality goals.