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A PROCEDURE FOR THE PRODUCTION OF ULTRA-PURE PRECURSORS FROM COAL FOR THE MANUFACTURE OF VALUE-ADDED CARBON PRODUCTS - TREATMENT OF THE RESIDUE

 

作者: ProscnjitD. Chaudhuri,   JohnW. Zondlo,  

 

期刊: Fuel Science and Technology International  (Taylor Available online 1996)
卷期: Volume 14, issue 10  

页码: 1381-1389

 

ISSN:0884-3759

 

年代: 1996

 

DOI:10.1080/08843759608947644

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Solvent extraction of coal results in a coal-derived extract containing the solvent-soluble organic portion of coal free of almost all mineral matter. A residue is also produced and consists of most of the mineral matter. Although a procedure has been developed to manufacture ultra-pure coke precursors for value-added carbon products from coal-derived extracts, treatment/rc-usc of the residue is necessary to make the process economically attractive and environmentally friendly. In this study, a technique has been developed to beneficiate the residue by specific gravity fractionation. It is found that nearly 70 % of the residue can be separated into a fraction containing less than 3.5% ash for a typical WV bituminous coal using an organic liquid having a specific gravity of 1.5. This treatment enables the residue to serve as a low-ash boiler fuel or a suitable precursor for the manufacture of materials such as activated carbons. Consequently, the potential for coal-derived precursors leading to new and non-conventionai marketable carbon products can be realized easily.

 

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