Characterization on the ultraclean carbons extracted from direct coal liquefaction residue using petroleum ether. Issue 15 (13th October 2021)

• Record Type: Journal Article
• Authors: Li, Peng; Zhou, Qunzong; Fan, Guixia; Wang, Yugao; Cao, Yijun; Zhou, Guoli
• Is Part Of: Separation science and technology. Volume 56:Issue 15(2021)
• Page Start: 2587
• Page End: 2595
• Publication Date: 2021-10-13
• Subjects: direct coal liquefaction residue -- solvent extraction -- petroleum ether -- ultraclean carbons; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2020.1835982
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: Direct coal liquefaction residue is a coal waste with high ash and sulfur content, but also rich in valuable organic carbons. In this work, the ultraclean carbons were obtained by solvent extraction using petroleum ether at a mild temperature. The petroleum ether extractable fraction is ash-free with high carbon content, but low nitrogen and sulfur. The petroleum ether extractable fraction is reasonable to be cleaned for fuel use or converted into carbon products. Detailed characterizations on the chemical composition and structural features of petroleum ether extractable fraction were performed to supply fundamental information for additional treatment.