The effect of wood biomass blending with pulverized coal on combustion characteristics under oxy-fuel condition

被引：68

作者：

Ahn, Seongyool ^{[1
]}

Choi, Gyungmin ^{[2
]}

Kim, Duckjool ^{[2
]}

机构：

[1] Pusan Natl Univ, Grad Sch Mech Engn, Pusan 609735, South Korea

[2] Pusan Natl Univ, Sch Mech Engn, Pusan 609735, South Korea

来源：

BIOMASS & BIOENERGY | 2014年 / 71卷

关键词：

Wood biomass; Coal combustion; Blending; Co-firing; Oxy-fuel; Combustion characteristic; O-2/RECYCLED FLUE-GAS; NOX REDUCTION; RECYCLED-NOX; DEVOLATILIZATION; ATMOSPHERES; REACTIVITY; KINETICS; CO2; COCOMBUSTION; DIOXIDE;

D O I：

10.1016/j.biombioe.2014.10.014

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In this study, combustion from the co-firing of coal and wood biomass, and thermal characteristics such as ignition temperature, burn-out temperature, and activation energy were discussed using a thermogravimetric analyzer (TGA). We investigated the effects of biomass blending with two kinds of pulverized coal (bituminous Shenhua, and sub-bituminous Adaro) under air and oxy-fuel conditions. The coal fraction in the blended samples was set to 1, 0.8, and 0.5. The oxygen fraction in the oxidant was set to 0.21, 0.3, 0.5, and 0.8. The ignition temperature was governed by the fuel composition, particularly in the blended biomass which has a much higher content of volatile matter comparing to coal. However, the burnout temperature, which shows a strong relationship with char combustion, depended on the oxidant ingredients rather than on the fuel components. Thermal characteristics such as ignition, burnout temperature, reaction region, and heat flow were very similar between air and a 0.3 oxygen concentration under oxy-fuel conditions with Shenhua coal. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：144 / 154

页数：11

共 41 条

[1] The characteristics of NO production mechanism on flue gas recirculation in oxy-firing condition [J].