Proceedings of the 2016 3rd International Conference on Mechatronics and Information Technology

Identification and Solvent Extraction-Sedimentation Removal of Metallic Elements in Coal Tar Pitch

Authors
Lijuan Gao, Xiaojun Zheng, Yaming Zhu, Xuefe Zhao
Corresponding Author
Lijuan Gao
Available Online April 2016.
DOI
https://doi.org/10.2991/icmit-16.2016.148How to use a DOI?
Keywords
coal tar; medium-temperature pitch; refined pitch; modified pitch; ICP-AES
Abstract
Refined pitches were obtained by distillation and solvent extraction with raw materials of the high temperature coal tar and medium-temperature pitch, respectively. Modified pitches were achieved by air oxidation treatment of refined pitches. Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) was used to determine metallic elements of raw material and the prepared pitches. The results show that both the coal tar and medium-temperature pitch have metallic elements as follow: Ge, Pb, Ba, Mg, Ce, Cd, Na, Sn, Zn, Ni, Bi, Nb, Be, Cr, Ca, V, In, Ti, Sr, Si, Cu, Al, Fe and Mn, among which the abundance of Pb, Mg, Zn, Ni, Cr, Ca, Si, Cu, Al, Fe, and Mn were relatively larger. The content of Pb, Cu, Mn, Zn, Cr, Ni and Mg of coal tar were larger than those of the medium-temperature pitch, while the content of Ca, Al and Fe were opposite. The content of all metallic elements decreased during the process of solvent extraction, while increased during the modification of refined pitch. Compared with the refined pitch prepared by solvent extraction, the content of metallic elements in coal tar refined pitch were higher. With the treatment of air oxidation, the metallic elements in modified medium-temperature pitch and modified coal tar pitch were similar except Zn. Obviously, the modified coal tar pitch has a larger content of Zn.
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Proceedings
2016 3rd International Conference on Mechatronics and Information Technology
Part of series
Advances in Computer Science Research
Publication Date
April 2016
ISBN
978-94-6252-184-1
ISSN
2352-538X
DOI
https://doi.org/10.2991/icmit-16.2016.148How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Lijuan Gao
AU  - Xiaojun Zheng
AU  - Yaming Zhu
AU  - Xuefe Zhao
PY  - 2016/04
DA  - 2016/04
TI  - Identification and Solvent Extraction-Sedimentation Removal of Metallic Elements in Coal Tar Pitch
BT  - 2016 3rd International Conference on Mechatronics and Information Technology
PB  - Atlantis Press
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmit-16.2016.148
DO  - https://doi.org/10.2991/icmit-16.2016.148
ID  - Gao2016/04
ER  -