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:

Gerhardt, T., Cenni, R., Spliethoff, H. and Hein, K.R.G. (1997): Combustion behaviour of coal-waste flames in pulverized fuel firing systems which is published within the 22^nd International Conference on Coal Utilization and Fuel Systems, Clearwater, FL (United States) 17-20 Mar 1997. pp. 389-400.

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

In European countries, and especially in Germany, the disposal of waste material is becoming more and more a problem. Incineration plants, which should provide the capacity to take over the thermal treatment of the waste material, are hardly accepted by the population. For this reason it is nearly impossible to install new facilities. If the range of hazardous matter in the waste streams is suitable to be treated and recovered by the existing flue gas cleaning system, co-combustion of waste in existing power plants can have both economical and environmental benefits in comparison to the normal waste incineration.

During the last years, several waste materials were tested in the facilities in cooperation with industry and in public research projects. The most important examples of them are:

–          municipal sewage sludge, dried and grinded

–          waste wood in comparison with straw and Miscanthus

–          plastic waste coming from production residues or separated out of municipal waste

–          hard coal tar oil of the char production

–          activated carbon burdened from flue gas cleaning systems in waste incinerators

The sewage sludge, plastic waste and hard coal tar oil co-combustion is discussed in paper [1]; plastic waste co-combustion in paper [2] and sewage sludge in paper [3].

Articles in German language by the same authors can be found in the Source.

4. Synopsis