Numerical simulation of coal gasification at circulating fluidised bed conditions

被引：45

作者：

Graebner, Martin ^{[1
]}

Ogriseck, Sirko ^{[1
]}

Meyer, Bernd ^{[1
]}

机构：

[1] Tech Univ Bergakamedie Freiberg, Inst Energy Proc Engn & Chem Engn, D-09596 Freiberg, Germany

来源：

FUEL PROCESSING TECHNOLOGY | 2007年 / 88卷 / 10期

关键词：

coal gasification; numerical simulation; fluidised bed gasifier; gasification performance; brown coal;

D O I：

10.1016/j.fuproc.2007.05.006

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

This paper presents modelling results for a new pressurised fluidised bed gasifier concept, called the Power High-Temperature Winkler gasifier (PHTW gasifier). The numerical simulation of the steam/oxygen blown and lignite-fuelled power plant gasifier is performed on the 4800 t/day (1000 MW) at a pressure of 33 bar. The formation of flow pattern, turbulence, product gas composition, temperature, and radiation heat transfer were investigated. Influence of diameter variation on the flow patterns at constant operating conditions is presented. A comparison between the calculation and literature data of similar fluidised bed systems shows good conformance. To anticipate the solid's behaviour, particle concentration, particle size change due to pyrolysis and surface reactions, and particle tracks were modelled using an Eulerian-Lagrangian approach. While varying the total particle mass flow, the pressure drop as a function of reactor height was observed. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：948 / 958

页数：11

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