Oxidation characteristics of a cellulose-derived hydrochar in thermogravimetric and laminar flow burner experiments

被引：13

作者：

Duedder, Hendrik ^{[1
]}

Wuetscher, Annika ^{[1
]}

Vorobiev, Nikita ^{[2
]}

Schiemann, Martin ^{[2
]}

Scherer, Viktor ^{[2
]}

Muhler, Martin ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Lab Ind Chem, D-44780 Bochum, Germany

[2] Ruhr Univ Bochum, Dept Energy Plant Technol, D-44780 Bochum, Germany

来源：

FUEL PROCESSING TECHNOLOGY | 2016年 / 148卷

关键词：

Synthetic lignite; Hydrothermal carbonization; Thermogravimetric analysis; Laminar flow reactor; Catalytic influence; Minerals; MINERAL MATTER; COAL CHARS; COMBUSTION; CATALYSTS; BEHAVIOR; KINETICS; LIGNITE; OXIDES; SOOT;

D O I：

10.1016/j.fuproc.2016.02.027

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Synthetic lignite was prepared by hydrothermal carbonization, in which minerals typical for coal ashes were incorporated during hydrothermal carbonization allowing us to study the catalytic effect of ash components on the oxidation rate of the fuel. Chemically leached lignite using hydrochloric acid was applied as reference material. Combustion experiments were performed by thermogravimetric analysis under chemically controlled conditions and in a laminar flow reactor under pore-diffusion limitation. The investigation of the hydrochar in the laminar flow reactor provided gas temperatures and heating rates typical for pulverized coal combustion. The combustion rate of the chemically leached lignite was found to be comparable to the hydrochar. Furthermore, the catalytic effect of incorporated iron oxide was detected in both combustion experiments. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：85 / 90

页数：6

共 21 条

[1] Combustion of coal chars in oxygen-enriched atmospheres [J].

Bejarano, Paula A. ;

Levendis, Yiannis A. .

COMBUSTION SCIENCE AND TECHNOLOGY, 2007, 179 (08) :1569-1587

[2] Synthesis and characterization of lignite-like fuels obtained by hydrothermal carbonization of cellulose [J].

Duedder, Hendrik ;

Wuetscher, Annika ;

Stoll, Raphael ;

Muhler, Martin .

FUEL, 2016, 171 :54-58

[3]

Essenhigh R., 1989, COMBUST FLAME, V30, P3

[4] Impact of biomass char on coal char burn-out under air and oxy-fuel conditions [J].

Farrow, Timipere S. ;

Sun, Chenggong ;

Snape, Colin E. .

FUEL, 2013, 114 :128-134

[5] DECREASES IN THE SWELLING AND POROSITY OF BITUMINOUS COALS DURING DEVOLATILIZATION AT HIGH HEATING RATES [J].

GALE, TK ;

BARTHOLOMEW, CH ;

FLETCHER, TH .

COMBUSTION AND FLAME, 1995, 100 (1-2) :94-100

[6] On the use of single-film models to describe the oxy-fuel combustion of pulverized coal char [J].

Geier, M. ;

Shaddix, C. R. ;

Davis, K. A. ;

Shim, H. -S. .

APPLIED ENERGY, 2012, 93 :675-679

[7] Effect of mineral matter on the reactivity of lignite [J].

Haykiri-Açma, H ;

Yavuz, R ;

Ersoy-Meriçboyu, A ;

Küçükbayrak, S .

THERMOCHIMICA ACTA, 1999, 342 (1-2) :79-84

[8] Semi-global intrinsic kinetics for char combustion modeling [J].

Hurt, RH ;

Calo, JM .

COMBUSTION AND FLAME, 2001, 125 (03) :1138-1149

[9] An investigation of the thermal and catalytic behaviour of potassium in biomass combustion [J].

Jones, J. M. ;

Darvell, L. I. ;

Bridgeman, T. G. ;

Pourkashanian, M. ;

Williams, A. .

PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2007, 31 :1955-1963

[10] INFLUENCE OF THE MINERAL MATTER CONTENT ON THE COMBUSTION CHARACTERISTICS OF TURKISH LIGNITES [J].

KUCUKBAYRAK, S .

THERMOCHIMICA ACTA, 1993, 216 :119-129

← 1 2 3 →