Power Plant Engineering

6

Fluidized Bed Combustion

Contents

6.1 Introduction to fluidized bed combustion

6.2 Regimes of combustion

6.3 Fluidized bed boilers – classification

6.4 Advantages of FBC system

6.5 Control of oxides of nitrogen

6.6 Desulphurization technology

6.1 INTRODUCTION TO FLUIDIZED BED COMBUSTION

Due to the availability of low calorific value, high ash content coal in India, it is essential to use technology-driven fluidized bed combustion (FBC) concept over the conventional stoker firing system. The benefits an FBC offers are as follows:

1. Compact boiler design
2. Flexibility in using fuel
3. Higher combustion efficiency
4. Reduced emission from pollutants such as NO_x and SO_x

6.2 REGIMES OF COMBUSTION

FBC works on the principle by passing an evenly ...