BITUMINOUS COAL EXTRACTION IN TERMS OF ELECTRON-DONOR AND ELECTRON-ACCEPTOR INTERACTIONS IN THE SOLVENT-COAL SYSTEM

被引：113

作者：

MARZEC, A

JUZWA, M

BETLEJ, K

SOBKOWIAK, M

机构：

[1] Department of Petroleum and Coal Chemistry, Polish Academy of Sciences, 44-100 Gliwice

来源：

FUEL PROCESSING TECHNOLOGY | 1979年 / 2卷 / 01期

关键词：

D O I：

10.1016/0378-3820(79)90029-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Experiments on high volatile bituminous coal extraction at ambient temperature have been carried out by means of 18 solvents having their electron-donor and -acceptor properties quantitatively determined (DN and AN numbers) by Gutmann's method. A model for coal extraction, based on the assumption that donor-acceptor bonds occur in coal and are responsible for binding together macromolecular network and extractable substances filling the pores of a network, has been worked out and verified on the basis of experimental data. The results lead to the conclusion that extraction is in principle, a substitution reaction: pore substances are replaced by a solvent molecule in their Donornetwork → Acceptorpore substance or Donorpore substance → Acceptornetwork bonds. Solvents capable of substitution are characterized by specific DN and AN values. © 1979.

引用

页码：35 / 44

页数：10