TY - JOUR
T1 - Fast co-pyrolysis characteristics of high-alkali coal and polyethylene using infrared rapid heating
AU - Li, Moshan
AU - Lu, Yiyu
AU - Hu, Erfeng
AU - Yang, Yang
AU - Tian, Yishui
AU - Dai, Chongyang
AU - Li, Chenhao
PY - 2023/3/1
Y1 - 2023/3/1
N2 - Optimizing secondary reactions using infrared-fast pyrolysis has proved beneficial for investigating the co-pyrolysis behavior. In this study, co-pyrolysis of high-alkali coal (PC) and polyethylene at different temperatures, co-pyrolysis of polyethylene with demineralized coal (DP), and pyrolysis of raw high-alkali coal (RC) and demineralized coal (DC) were conducted in an infrared heating reactor. The results show that the co-pyrolysis promoted the formation of tar and the highest tar yield was 16.16% at 700 °C, and the PC tar yield was higher than that of RC, DC at 500 °C with 7.51% and 5.99% respectively. The tar yields of DP and PC were 7.49% and 11.80%, respectively, and the later had a slightly higher tar yield due to the interaction with AAEM. The addition of PE coupled infrared rapid heating can efficiently reduce the nitrogen and chlorine-containing fractions while increasing the content of long-chain alkanols and linear hydrocarbons. The content of organochlorines decreased from 2.95% at 500 °C to 1.00% at 800 °C. Alkanol and linear hydrocarbons have the highest content in the co-pyrolysis tar, with the total highest content of 61.56% at 600 °C.
AB - Optimizing secondary reactions using infrared-fast pyrolysis has proved beneficial for investigating the co-pyrolysis behavior. In this study, co-pyrolysis of high-alkali coal (PC) and polyethylene at different temperatures, co-pyrolysis of polyethylene with demineralized coal (DP), and pyrolysis of raw high-alkali coal (RC) and demineralized coal (DC) were conducted in an infrared heating reactor. The results show that the co-pyrolysis promoted the formation of tar and the highest tar yield was 16.16% at 700 °C, and the PC tar yield was higher than that of RC, DC at 500 °C with 7.51% and 5.99% respectively. The tar yields of DP and PC were 7.49% and 11.80%, respectively, and the later had a slightly higher tar yield due to the interaction with AAEM. The addition of PE coupled infrared rapid heating can efficiently reduce the nitrogen and chlorine-containing fractions while increasing the content of long-chain alkanols and linear hydrocarbons. The content of organochlorines decreased from 2.95% at 500 °C to 1.00% at 800 °C. Alkanol and linear hydrocarbons have the highest content in the co-pyrolysis tar, with the total highest content of 61.56% at 600 °C.
KW - Fast co-pyrolysis
KW - High alkali coal
KW - Infrared heating
KW - Polyethylene
KW - Tar improvement
UR - http://www.scopus.com/inward/record.url?scp=85146069877&partnerID=8YFLogxK
UR - https://www.sciencedirect.com/science/article/pii/S0360544223000294?via%3Dihub
U2 - 10.1016/j.energy.2023.126635
DO - 10.1016/j.energy.2023.126635
M3 - Article
AN - SCOPUS:85146069877
SN - 0360-5442
VL - 266
JO - Energy
JF - Energy
M1 - 126635
ER -