Kinetics based on two-stage scheme for co-combustion of herbaceous biomass and bituminous coal

被引：69

作者：

Liu, Xiang ^{[1
]}

Chen, Meiqian ^{[1
]}

Wei, Yuanhang ^{[1
]}

机构：

[1] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China

来源：

FUEL | 2015年 / 143卷

基金：

中国国家自然科学基金;

关键词：

Co-combustion; Biomass; Chinese bituminous coal; Heating rate; Kinetics; THERMODEGRADATION KINETICS; THERMAL-BEHAVIOR; HEAT-TRANSFER; COMBUSTION; PYROLYSIS; BLENDS; WOOD; TORREFACTION; BURNOUT; MODEL;

D O I：

10.1016/j.fuel.2014.11.085

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：

The kinetics of co-combustion of two herbaceous biomass species (beetroot and switchgrass) with bituminous coal was evaluated using a non-isothermal thermogravimetric method (TGA). The effects of heating rates, sample kinds and blend ratios on the kinetics of co-combustion were revealed based on two-stage scheme, which referred to the two stages before and after the maximum combustion rate. The kinetic parameters and combustion reaction mechanisms were tested by combining the isoconversional method (Ozawa-Flynn-Wall) and the Coats-Redfern method in order to find out the kinetics characteristics responsible for the combustion of the samples. There were significant difference between combustion kinetics of bituminous coal and biomass. The blending ratios and the heating rates had have certain effect on the mechanisms of switchgrass/coal blends at pre-peak. The dominant mechanisms associated with co-combustion kinetics for beetroot/coal at pre-peak and post-peak were described by the Avrami-Erofeev equations. The mechanisms of co-combustion for switchgrass/coal samples at pre-peak were described by the Avrami-Erofeev equation, Z-L-T equation or Anti-Jander equation; however, at post-peak, their mechanisms were described by the Avrami-Erofeev equation. The general kinetic compensation effect correlations were deduced for all samples within the heating rates of 10-90 degrees C/min. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：577 / 585

页数：9

共 42 条

[11]

Fornasini P., 2008, The Uncertainty in Physical Measurements: An Introduction to Data Analysis in the Physics Laboratory

[12] An investigation into a carbon burnout kinetic model for oxy-coal combustion [J].

Gharebaghi, Maryam ;

Irons, Robin M. ;

Pourkashanian, Mohamed ;

Williams, Alan .

FUEL PROCESSING TECHNOLOGY, 2011, 92 (12) :2455-2464

[13] Thermal behaviour and kinetics of coal/biomass blends during co-combustion [J].

Gil, M. V. ;

Casal, D. ;

Pevida, C. ;

Pis, J. J. ;

Rubiera, F. .

BIORESOURCE TECHNOLOGY, 2010, 101 (14) :5601-5608

[14] Co-firing biomass with coal for electricity generation-An assessment of the potential in EU27 [J].

Hansson, Julia ;

Berndes, Goran ;

Johnsson, Filip ;

Kjarstad, Jan .

ENERGY POLICY, 2009, 37 (04) :1444-1455

[15] Effect of co-combustion on the burnout of lignite/biomass blends: A Turkish case study [J].

Haykiri-Acma, H. ;

Yaman, S. .

WASTE MANAGEMENT, 2008, 28 (11) :2077-2084

[16]

Hu R.Z., 2008, Thermal Analysis Kinetics, Vsecond

[17] Thermal analysis and kinetics of biomass samples [J].

Kok, Mustafa Versan ;

Ozgur, Emre .

FUEL PROCESSING TECHNOLOGY, 2013, 106 :739-743

[18] Small-scale co-utilisation of coal and biomass [J].

Kubacki, Michal L. ;

Ross, Andrew B. ;

Jones, Jenny M. ;

Williams, Alan .

FUEL, 2012, 101 :84-89

[19] Thermogravimetric analyses of combustion of lignocellulosic materials in N2/O2 and CO2/O2 atmospheres [J].

Lai, ZhiYi ;

Ma, XiaoQian ;

Tang, YuTing ;

Lin, Hai ;

Chen, Yong .

BIORESOURCE TECHNOLOGY, 2012, 107 :444-450

[20] Oxygen enriched co-combustion characteristics of herbaceous biomass and bituminous coal [J].

Liu, Xiang ;

Chen, Meiqian ;

Yu, Dong .

THERMOCHIMICA ACTA, 2013, 569 :17-24

← 1 2 3 4 5 →