Optimization of Combustion Characteristics of Blended Coals Based on TOPSIS Method

Yingchun Liu,Hao Zhang,Xiaohui Zhang,Aimin Zhang,Shan Qing,Shuping Yang

doi:10.1155/2018/4057983

Abstract

The Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) method is used to find optimal mixing scheme of Zhaotong lignite, Fuyuan bituminous coal, and Xiaolongtan lignite in terms of combustion performance. Comparative evaluation of different mixing schemes is also conducted, where the flammability index, comprehensive combustion characteristic index, burnout temperature, and economic costs can be used to measure the advantages and disadvantages of different mixing schemes with different parameters. Through analysis and optimization, it is found that when the lignite of Xiaolongtan, lignite of Zhaotong, and bituminous coal of Fuyuan are mixed with a ratio 2 : 1 : 2, the mixed coal has the best performance; when the lignite of Xiaolongtan, lignite of Zhaotong, and bituminous coal of Fuyuan are mixed with a ratio 0 : 2 : 1, the mixed coal has the worst performance.

Highlights

With the development of the electric power industry, more and more power plants have begun to use mixed coal combustion technology, so that the application of mixed coal combustion has brought more and more problems. It is well-known that the mix scheme for the coals is crucial for the combustion performance
Many scholars have gradually paid attention to the research of mixed coal [1, 2] to find appropriate optimal mix scheme to seek for better combustion performance
This paper mainly studies the characteristics of combustion of mixed Xiaolongtan lignite, Fuyuan bituminous coal, and Zhaotong lignite coal blended in Yunnan Province, China

Summary

Introduction

With the development of the electric power industry, more and more power plants have begun to use mixed coal combustion technology, so that the application of mixed coal combustion has brought more and more problems It is well-known that the mix scheme for the coals is crucial for the combustion performance. Many scholars have gradually paid attention to the research of mixed coal [1, 2] to find appropriate optimal mix scheme to seek for better combustion performance. They mainly improve mixed coal combustion technology by mixing methods, combustion characteristics, burn-up, slagging rate, and emission reduction of pollutants in blended coal [3, 4]. The excellent characteristics of the blended coal species can be used to make the blended coal show the best performance in comprehensive performance to better meet the needs of end users [12]

Objectives

Methods

Conclusion