TG-MS analysis and kinetic study of co-combustion of ca-rich oil shale with biomass in air and oxy-like conditions

被引:10
作者
Baqain, Mais [1 ]
Neshumayev, Dmitri [1 ]
Konist, Alar [1 ]
机构
[1] Tallinn Univ Technol, Dept Energy Technol, EE-19086 Tallinn, Estonia
来源
CARBON CAPTURE SCIENCE & TECHNOLOGY | 2024年 / 10卷
关键词
Oil shale; Biomass; Oxyfuel; Co-combustion; Thermogravimetric analysis; Synergy; MS; Kinetic analysis; THERMOGRAVIMETRIC ANALYSIS; FUEL COMBUSTION; THERMAL-ANALYSIS; BITUMINOUS COAL; BEHAVIOR; CHAR; PYROLYSIS; EMISSION; BLENDS; WASTE;
D O I
10.1016/j.ccst.2023.100162
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, the combustion behavior of ca-rich oil shale, spruce biomass, and their blends under air and oxyfuel environments of 21/79 % and 30/70 % O-2 /CO2 like conditions were investigated. Non-isothermal thermogravi-metric (TG) experiments coupled with a quadrupole mass spectrometer (MS) were conducted to study individual fuels and their blends at 1:0, 4:1, 3:2, 2:3, 1:4, and 0:1 (0, 20, 40, 60, 80 and 100 wt.% Biomass) under three different heating rates 10, 30 and 50 degrees C/min. Co-combustion synergistic along with the kinetic analysis by the isoconversional Friedman method has been carried out to evaluate the combustion process. The results show that the addition of biomass enhanced combustion performance and reduced burnout tem-peratures. Under oxy conditions, the ignition temperatures stabilized with a biomass ratio > 40 %. Ash content was reduced with biomass addition and when switching from air to oxyfuel combustion, the temperature of blends' carbonate decomposition was stable at similar to 720 degrees C. A positive synergistic effect in the devolatilization and the combustion of light hydrocarbons occurred at higher biomass ratios. Yet, the char oxidation peaks were below zero indicating a negative effect under 21 % of inlet O-2. With increasing the heating rate, the negative syner-gistic effect was weakened for the three combustion atmospheres. SO(2 )emissions were reduced with increasing biomass ratio and increased under oxy mode along with H2O release. The activation energy (E) was lower in oxy conditions than in air mode for individual fuel and their blends, compared to the OS sample, the reduction was higher with increasing BM ratios and for the BM fuel. Overall, this study determines the appropriate conditions for the co-combustion of oil shale and spruce biomass under air and oxy modes for future carbon-negative capture applications in industrial oil shale combustion boilers.
引用
收藏
页数:15
相关论文
共 60 条
[1]   Effects of eucalyptus leaves blending on combustion characteristics of an Indian reject coal [J].
Aich, Subhajit ;
Nandi, Barun Kumar ;
Bhattacharya, Sumantra .
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, 2022, 44 (01) :1437-1448
[2]  
Altun NE, 2006, OIL SHALE, V23, P211
[3]   Kinetics of coal and char oxycombustion studied by TG-FTIR [J].
Babinski, Piotr ;
Labojko, Grzegorz ;
Kotyczka-Moranska, Michalina ;
Plis, Agnieszka .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2013, 113 (01) :371-378
[4]   AN INVESTIGATION INTO THE CHARACTERISTICS AND KINETICS OF OIL SHALE OXY-FUEL COMBUSTION BY THERMOGRAVIMETRIC ANALYSIS [J].
Bai, Fengtian ;
Zhao, Jinmin ;
Liu, Yumin .
OIL SHALE, 2019, 36 (01) :1-18
[5]  
Baqain M, 2022, SSRN Electron J, DOI [10.2139/SSRN.4276982, DOI 10.2139/SSRN.4276982]
[6]   NOx and N2O emissions from Ca-rich fuel conversion in oxyfuel circulating fluidized bed combustion [J].
Baqain, Mais ;
Neshumayev, Dmitri ;
Konist, Alar .
THERMAL SCIENCE AND ENGINEERING PROGRESS, 2023, 42
[7]   Ash characterisation formed under different oxy-fuel circulating fluidized bed conditions [J].
Baqain, Mais ;
Yoruk, Can Rustu ;
Nesumajev, Dmitri ;
Jarvik, Oliver ;
Konist, Alar .
FUEL, 2023, 338
[8]   Co-combustion of high and low ash lignites with raw and torrefied biomass under air and oxy-fuel combustion atmospheres [J].
Barzegar, Ramin ;
Yozgatligil, Ahmet ;
Atimtay, Aysel T. .
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, 2022,
[9]   Study of the kinetic behaviour of biomass and coal during oxyfuel co-combustion [J].
Chansa, Oris ;
Luo, Zhongyang ;
Yu, Chunjiang .
CHINESE JOURNAL OF CHEMICAL ENGINEERING, 2020, 28 (07) :1796-1804
[10]   Combustion behaviour of biochars thermally pretreated via torrefaction, slow pyrolysis, or hydrothermal carbonisation and co-fired with pulverised coal [J].
Chen, Lichun ;
Wen, Chang ;
Wang, Wenyu ;
Liu, Tianyu ;
Liu, Enze ;
Liu, Haowen ;
Li, Zexin .
RENEWABLE ENERGY, 2020, 161 :867-877