COAL-LIQUEFACTION IN LIGNIN-DERIVED LIQUIDS UNDER LOW SEVERITY CONDITIONS

被引：16

作者：

LALVANI, SB ^{[1
]}

MUCHMORE, CB ^{[1
]}

KOROPCHAK, JA ^{[1
]}

AKASH, B ^{[1
]}

CHAVEZ, C ^{[1
]}

RAJAGOPAL, P ^{[1
]}

机构：

[1] SO ILLINOIS UNIV,DEPT CHEM,CARBONDALE,IL 62901

来源：

FUEL | 1991年 / 70卷 / 12期

关键词：

COAL; LIQUEFACTION; COAL DEPOLYMERIZATION;

D O I：

10.1016/0016-2361(91)90010-8

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

It is found that lignin-derived liquids when reacted with coal under mild reaction conditions (375-degrees-C and 2.17 x 10(6) -3.55 x 10(6) N m-1) enhance the rate of coal depolymerization. Up to 30% enhancement in coal conversion rate is achieved using lignin-derived liquids. The influence of time of reaction and temperature on the degree of reaction was investigated. The lignin liquid-assisted coal depolymerization products (liquid) are observed to contain a significant amount of the desirable pentane-soluble fraction. Influence of the time of storage of lignin-derived liquids on coal conversion was also determined. Also reported are data on elemental analyses of the solid and liquid products. The liquid product analyses using n.m.r. and s.e.c. techniques are also presented. Based upon the experimental data collected, it is hypothesized that enhancement in coal depolymerization rate can be explained by a reaction pathway involving intermediates formed from lignin-derived lignin liquids. A mathematical model describing the reaction chemistry has been developed. Computed rate constants are also reported. The analysis indicates that the lignin-derived intermediates are short-lived as compared to the time needed for complete coal depolymerization.

引用

页码：1433 / 1438

页数：6

共 11 条

[1] CHARACTERIZATION OF PRODUCTS FORMED DURING COLIQUEFACTION OF LIGNIN AND BITUMINOUS COAL AT 400-DEGREES-C [J].