skip to main content

SciTech ConnectSciTech Connect

Title: Numerical study of radiation effect on the municipal solid waste combustion characteristics inside an incinerator

Highlights: • A 3-D model for the MSW incinerator with preheated air was developed. • Gas radiative properties were obtained from a statistical narrow-band model. • Non-gray body radiation model can provide more accurate simulation results. - Abstract: Due to its advantages of high degree volume reduction, relatively stable residue, and energy reclamation, incineration becomes one of the best choices for Municipal Solid Waste (MSW) disposal. However, detailed measurements of temperature and gas species inside a furnace are difficulty by conventional experimental techniques. Therefore, numerical simulation of MSW incineration in the packed bed and gas flow field was applied. In this work, a three dimensional (3-D) model of incinerator system, including flow, heat transfer, detailed chemical mechanisms, and non-gray gas models, was developed. Radiation from the furnace wall and the flame formed above the bed is of importance for drying and igniting the waste. The preheated air with high temperature is used for the MSW combustion. Under the conditions of high temperature and high pressure, MSW combustion produces a variety of radiating gases. The wavelength-depend radiative properties of flame adopted in non-gray radiation model were obtained from a statistical narrow-band model. The influence of radiative heat transfer on temperature, flowmore » field is researched by adiabatic model (without considering radiation), gray radiation model, and non-gray radiation model. The simulation results show that taking into account the non-gray radiation is essential.« less
Authors:
; ; ;
Publication Date:
OSTI Identifier:
22472558
Resource Type:
Journal Article
Resource Relation:
Journal Name: Waste Management; Journal Volume: 44; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; COMBUSTION; COMPUTERIZED SIMULATION; DRYING; FLAMES; FURNACES; GAS FLOW; HEAT TRANSFER; INCINERATORS; LAND RECLAMATION; MUNICIPAL WASTES; NUMERICAL ANALYSIS; PACKED BEDS; PRESSURE RANGE MEGA PA 10-100; RADIATION EFFECTS; RESIDUES; SOLID WASTES; TEMPERATURE RANGE 0400-1000 K; THREE-DIMENSIONAL CALCULATIONS