Functional Group Characteristics and Pyrolysis/Combustion Performance of Karamay OS Based on FT-IR and TG-DTG Analyses

Wenlong Mo; Xian-Kang Shan; Xiaoqiang He; Wen-Jie Qiang; Xian-Yong Wei; Bo Wei; Xing Fan; Yulong Wu

doi:10.1021/acsomega.1c02734

Functional Group Characteristics and Pyrolysis/Combustion Performance of Karamay OS Based on FT-IR and TG-DTG Analyses

ACS Omega. 2021 Oct 11;6(42):27684-27696. doi: 10.1021/acsomega.1c02734. eCollection 2021 Oct 26.

Authors

Wenlong Mo¹, Xian-Kang Shan¹, Xiaoqiang He¹, Wen-Jie Qiang¹, Xian-Yong Wei^{1

2}, Bo Wei¹, Xing Fan^{1

3}, Yulong Wu^{1

4}

Affiliations

¹ State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources and Key Laboratory of Coal Clean Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), College of Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China.
² Key Laboratory of Coal Processing and Efficient Utilization, China University of Mining & Technology, Ministry of Education, Xuzhou 221116, Jiangsu, China.
³ College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China.
⁴ Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China.

Abstract

Proximate analysis, ultimate analysis, Fourier-transform infrared spectroscopy (FT-IR), and thermogravimetry-differential thermal analysis characterization were carried out on oily sludge (OS) samples OS1-OS5, from Karamay, Xinjiang, China. The Coast-Redfern model (CRm) was used to simulate the pyrolysis and combustion kinetics of oily samples. The results showed that the peak area percentage of benzene ring trisubstitution of OS5, in the range of 700-900 cm^-1, is close to 75%, corresponding to its high volatile content. Based on the kinetic analysis by the CRm, it is found that the fitting degree of the five samples is better when the reaction order is selected as n = 2, with R ² close to 1.00 and 2RT/E to 0. Among them, the S _N and D _W of OS5 are 17.8 × 10^-10%² min^-2 °C^-3 and 0.10899 × 10^-5% min^-1 °C^-2, respectively, higher than those of other samples, indicating a good combustion performance.