1. Sources

The present Combustion File is part of the cluster of CFs produced within the literature survey phase of the industrial sponsored research and development project PowerFlam1 and is confidential to the participants registered for that project.

This CF is specifically concerned with the research project:

Morgan, D.J., Dacombe P., and van de Kamp W.L. (1997): Firing of Coal and Municipal Waste Sludges for Utility Boilers, which is published. AFRC spring meeting, April 1997, IFRF Doc N^o K70/y/113, IJmuiden, The Netherlands.

2. Background

·         This combustion file is concerned with the provision of combustion related data to the sponsors.

·         In this html file the source of the data is summarised in section 4 below, in order to give the reader a general overview of the way the data was collected.

·         Fuel and related data, prepared for calculation, are presented in individual Microsoft Excel Worksheets, all contained within a Workbook.

·         Please note that in some cases, the worksheet tabs within a workbook are not all visible without scrolling horizontally.

·         This workbook can be down-loaded by the reader and saved to her/his hard disk.

·         To achieve this click on the “xls” icon on the left hand side of the banner above. The file will be retrieved from the server, and with up-to-date versions of the browser, will appear in a separate window, from which it may be saved to the user’s hard disk.

·         The data in these worksheets are protected – thus the reader cannot change the worksheet without knowledge of the protection password.

·         However the reader can copy and paste the data into his/her own project work book as required – at this point the accuracy and integrity of the data becomes the responsibility of the reader. Included in this workbook are copies of the abstract and synopsis for reference purposes.

·         All credits and sources, and where necessary, instructions/advice for data use, are presented in this html file. These are not necessarily reproduced in the Excel Work Sheets.

3. Abstract

The reduction of emission of pollutants such as NOx, SO₂ and particulates from coal fired utility boilers, whilst maintaining food combustion efficiency, is one of the key issues in present utility boiler development. This paper presents the results of semi-industrial scale (2.5 MW_th­) furnace studies using swirl stabilized burners in a boiler chamber simulator with internal dimensions of 2x2x6.3 m. The experimental burners were designed to be flexible in terms of geometry and fuel-air staging. They incorporated a number of channels which were used for the primary fuel (in this case coal), and the reburn fuel, which included municipal sewage sludge, high of low volatile matter coal or natural gas.

4. Synopsis