Modelling of pyrolysis of large wood particles

被引：120

作者：

Sadhukhan, Anup Kumar ^{[1
]}

Gupta, Parthapratim ^{[1
]}

Saha, Ranajit Kumar ^{[2
]}

机构：

[1] Natl Inst Technol, Dept Chem Engn, Durgapur 713209, W Bengal, India

[2] Indian Inst Technol, Dept Chem Engn, Kharagpur 721302, W Bengal, India

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 12期

关键词：

Pyrolysis; Biomass; Kinetic model; Heat transfer model; Finite Volume Method; SOLID NONCATALYTIC REACTIONS; FINITE-VOLUME METHOD; BIOMASS PYROLYSIS; THERMOGRAVIMETRIC ANALYSIS; EXTINCTION PHENOMENA; KINETICS; CHAR; COMBUSTION; IGNITION; REACTOR;

D O I：

10.1016/j.biortech.2009.01.007

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A fully transient mathematical model has been developed to describe the pyrolysis of large biomass particles. The kinetic model consists of both primary and secondary reactions. The heat transfer model includes conductive and internal convection within the particle and convective and radiative heat transfer between the external surface and the bulk. An implicit Finite Volume Method (FVM) with Tridiagonal Matrix Algorithm (TDMA) is employed to solve the energy conservation equation. Experimental investigations are carried out for wood fines and large wood cylinder and sphere in an electrically heated furnace under inert atmosphere. The model predictions for temperature and mass loss histories are in excellent agreement with experimental results. The effect of internal convection and particle shrinkage on pyrolysis behaviour is investigated and found to be significant. Finally, simulation studies are carried out to analyze the effect of bulk temperature and particle size on total pyrolysis time and the final yield of char. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：3134 / 3139

页数：6

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