Abstract
Municipal Solid Waste (MSW) incineration is among the important opportunities to control the pollutions caused by improper dumping and flue gas emissions so as to meet the environmental guidelines. The objective of this study was to design and develop a model for the MSW incineration process. The paper explains the design and development of MSW incinerator involving details of the Computational Fluid Dynamics (CFD) procedures through model design to the post process. CFD model was developed to reveal these features of the incineration process in the MSW incinerator. The model predicts the temperature in combustion chambers as well as at stack outlet of the incinerator. The solid waste characterization was done, and the laboratory analysis shows that, the Higher Heating Value (HHV) of the MSW is 11.65 MJ/kg on dry basis. The elemental composition MSW consists of 54.8%, 5.27%, 34.61%, 2.37% and 0.3% for Carbon, Hydrogen, Oxygen, Nitrogen and Sulphur respectively which are the input parameters for the CFD. The model simulation was positively achieved during combustion process and temperature in combustion chambers ranged between 930 K and 1700 K.
Highlights
The increasing amount of Municipal Solid Waste (MSW) generation and its disposal without environmental effects is a serious problem which at present has caused a great concern [1]
The temperature of the flue gas leaving the chimney at the outlet is around 405 K to 511 K
This study presents the design and computational Fluid Dynamics modeling for a municipal solid waste incineration process
Summary
The increasing amount of Municipal Solid Waste (MSW) generation and its disposal without environmental effects is a serious problem which at present has caused a great concern [1]. One of the advantages of incineration is that, it decreases the volume of solid wastes by 80% to 95%, and it is a suitable method of disposal when there is a shortage of dumps which brings the idea of dumping costs [1] [3]. Thermal energy recovery from flue gases to produce steam for electricity generation is another advantage of incineration. There must be an appropriate control of incineration process in order to produce flue gases which cannot pollute the environment [4]. According to Bjorn et al, [5], the prediction of flue gases and the operating temperature in the incinerator with respect to its operating parameters is important information for the optimization of the incineration process
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