Abstract

The paper is focused on the idea of multi-fuel combustion in a large-scale circulating fluidized bed (CFB) boiler. The article discusses the concept of simultaneous coal and syngas combustion. A comprehensive three-dimensional computational fluid dynamics (CFD) model is developed, which allows us to describe complex phenomena that occur in the combustion chamber of the CFB boiler burning coal and syngas produced from coal sludge.

Highlights

  • Awareness of the growing environmental pollution and climate change is leading to the emergence of new methods to reduce emissions from fossil fuel combustion [1,2,3]

  • The purpose of the model research is to recognize thermal-flow conditions in the circulating fluidized bed (CFB) boiler in a nominal operating configuration and under the modified mode, i.e., with the supply of the auxiliary syngas

  • The solution which is recommended for issues relatively fluid

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Summary

A Comprehensive Three-Dimensional Analysis of a

Large-Scale Multi-Fuel CFB Boiler Burning Coal and Syngas. Jaroslaw Krzywanski 1, * , Karol Sztekler 2 , Mateusz Szubel 2 , Tomasz Siwek 2 , Wojciech Nowak 2 and Łukasz Mika 2. Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, al.Armii Krajowej 13/15, 42-200 Czestochowa, Poland

Introduction
Description of the OFZ-425CFB
Methods
K-Omega BSL Turbulence Model
Discrete Ordinates Radiation Model
Finite Volume Method
Geometry and Computational Domain Discretization of the Combustion Chamber
Method
11. Distribution
Boundary
Validation
Conclusions
Findings
Full Text
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