Issue |
MATEC Web Conf.
Volume 67, 2016
International Symposium on Materials Application and Engineering (SMAE 2016)
|
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Article Number | 06026 | |
Number of page(s) | 10 | |
Section | Chapter 6 Materials Science | |
DOI | https://doi.org/10.1051/matecconf/20166706026 | |
Published online | 29 July 2016 |
Effect of Extracted Compositions of Liquefaction Residue on the Structure and Properties of the Formed-coke
Metallurgical Engineering Technology Research Centre of Shaanxi Province Xi’an University of Architecture & Technology, Shaanxi Xi’an 710055, P.R. China
a syh1231@126.com
b maqn0724@126.com
c 233400766@qq.com
* Corresponding author: maqn0724@126.com
The purpose of this paper is to study the effect of extracted compositions of the de-ash liquefaction residue (D-DCLR) on pyrolysis products yields, compressive strength and composition of the formed-coke, which was prepared by co-pyrolysis of the low metamorphic pulverized coal and D-DCLR. The scanning electron microscope (SEM) and the Fourier Transform Infrared (FT-IR) were used to characterize the morphology and functional group of the formed-coke, respectively. The results showed that the extracted compositions of D-DCLR were heavy oil (HS), asphaltene (A), pre-asphaltene (PA) and tetrahydrofuran isolusion (THFIS), whose contents were 5.10%, 40.90%, 14.4%, 39.60%, respectively. During the pyrolysis process, HS was the main source of tar, and HS, A as well as PA were conducive to improve gas yields. The THFIS helped to improve the yield of the formed-coke up to 89.5%, corresponding to the compressive strength was only 147.7N/ball for the coke. A and PA were the key factors affecting the compressive strength and surface structure of the formed-coke. The compressive strength of coke could be up to 728.0N/ball with adding D-DCLR, which reduced by 50% after the removal of A and PA. The FT-IR analysis showed that the types of surface functional groups of the formed-coke were remained the same after co-pyrolysis, but the absorption peak intensity of each functional group was changed.
© The Authors, published by EDP Sciences, 2016
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