Effects of limestone calcination on the gasification processes in a BFB coal gasifier

被引：47

作者：

Armstrong, L. M. ^{[1
]}

Gu, S. ^{[1
,2
]}

Luo, K. H. ^{[1
]}

机构：

[1] Univ Southampton, Sch Engn Sci, Energy Technol Res Grp, Southampton SO17 1BJ, Hants, England

[2] Xian Jiaotong Liverpool Univ, Suzhou 215123, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2011年 / 168卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

CFD; Gasification; Fluidised bed; Multiphase; Limestone calcination; FLUIDIZED-BED REACTORS; FAST PYROLYSIS; KINETIC-THEORY; GRANULAR FLOW; HEAT-TRANSFER; SIMULATION; PARTICLES; BIOMASS; HYDRODYNAMICS; TRANSPORT;

D O I：

10.1016/j.cej.2011.01.102

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

An Eulerian-Eulerian computational fluid dynamics (CFD) model of the gasification processes in a coal bubbling fluidised bed (BFB) is presented incorporating the devolatilisation, heterogeneous, homogeneous reactions and limestone calcination. The model considers separate phases for the coal, limestone and char and is carried out for different experimental conditions taken from the literature. The results of the exiting gas compositions have been averaged over time and validated with experimental data. The hydrodynamic behaviour as well as temperature and reaction distributions within the bed is presented. The impact of limestone calcination on the gaseous composition is observed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：848 / 860

页数：13

共 53 条

[1] Computational fluid dynamics of high density circulating fluidized bed riser: Study of modeling parameters [J].

Almuttahar, Adnan ;

Taghipour, Fariborz .

POWDER TECHNOLOGY, 2008, 185 (01) :11-23

[2] The influence of multiple tubes on the tube-to-bed heat transfer in a fluidised bed [J].

Armstrong, L. M. ;

Gu, S. ;

Luo, K. H. .

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2010, 36 (11-12) :916-929

[3] Two-dimensional and three-dimensional computational studies of hydrodynamics in the transition from bubbling to circulating fluidised bed [J].

Armstrong, L. M. ;

Luo, K. H. ;

Gu, S. .

CHEMICAL ENGINEERING JOURNAL, 2010, 160 (01) :239-248

[4] Simulation of particles and gas flow behavior in the riser section of a circulating fluidized bed using the kinetic theory approach for the particulate phase [J].

Benyahia, S ;

Arastoopour, H ;

Knowlton, TM ;

Massah, H .

POWDER TECHNOLOGY, 2000, 112 (1-2) :24-33

[5] HYDRODYNAMICS OF CIRCULATING FLUIDIZED-BED RISERS - A REVIEW [J].

BERRUTI, F ;

CHAOUKI, J ;

GODFROY, L ;

PUGSLEY, TS ;

PATIENCE, GS .

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1995, 73 (05) :579-602

[6] PROPERTIES OF CARBONATE ROCKS RELATED TO SO2 REACTIVITY [J].

BORGWARD.RH ;

HARVEY, RD .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1972, 6 (04) :350-&

[7] KINETICS OF REACTION OF SO2 WITH CALCINED LIMESTONE [J].

BORGWARDT, RH .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1970, 4 (01) :59-+

[8] Modelling and simulation of coal gasification process in fluidised bed [J].

Chejne, F ;

Hernandez, JP .

FUEL, 2002, 81 (13) :1687-1702

[9] COMPREHENSIVE MODELING AND SIMULATION OF FLUIDIZED-BED BOILERS AND GASIFIERS [J].

DESOUZASANTOS, ML .

FUEL, 1989, 68 (12) :1507-1521

[10] Simulation of the fluid dynamics of a bubbling fluidized bed. Experimental validation of the two-fluid model and evaluation of a parallel multiblock solver [J].

Enwald, H ;

Peirano, E ;

Almstedt, AE ;

Leckner, B .

CHEMICAL ENGINEERING SCIENCE, 1999, 54 (03) :311-328

← 1 2 3 4 5 6 →