Evolution of Iron and Sulfur Containing Minerals in the Process of Mixed Combustion of Municipal Sewage Sludge and Coal by Factsage
LIU Liang
AI Jinjin
YIN Yanshan
TIAN Hong
SONG Cheng
LIU Cheng
GONG Qiandai
Yu Jianmin
LING Peng
JIANG Zhehao
Abstract：Industrial wastewater and domestic sewage have been transformed into sludge by sewage treatment plants,which contain a large amount of organic matter and energy.In order to protect the environment and save energy,it was designed to mix the sludge with coal for combustion,and the evolution of iron and sulfur compounds in the sludge and coal blending process was calculated and simulated.The results show that the urban sludge mixed with coal containing iron and sulfur minerals are szomolnokite,rozenite and pyrite.Fe3O4 (1) and FeO (1) in sludge mixed coal combustion occur at about 1500℃,which would lead to the equipment fouling.During the combustion process,the formation of SO2 generated from the decomposition of sulfate minerals will corrode the equipment.Based on the micro level,this paper aims to study the transformation of microcompounds in the combustion process of sludge mixed coal,and provide a basis for the solution of the problem of the pollutant emission in the combustion of the sludge mixed coal.
Keywords：Factsagesludgeco-firing with coalFe and S mineralsmechanism
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 32-37 )