图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
国际清洁环境能源期刊
SJR: 0.195 SNIP: 0.435 CiteScore™: 0.74

ISSN 打印: 2150-3621
ISSN 在线: 2150-363X

国际清洁环境能源期刊

Formerly known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.v4.i4.30
20 pages

BATCH OPERATED GASIFICATION AND OXIDATION PROCESS FOR THE RECOVERY OF PRECIOUS METALS

R. Berger
Institute of Process Engineering and Power Plant Technology (IVD), University of Stuttgart,Pfaffenwaldring 23, 70569 Stuttgart, Germany
G. Baumbach
Institute of Process Engineering and Power Plant Technology (IVD), University of Stuttgart,Pfaffenwaldring 23, 70569 Stuttgart, Germany
U. Demant
C. Hafner GmbH + Co, Pforzheim, Germany
H. Knosp
C. Hafner GmbH + Co, Pforzheim, Germany

ABSTRACT

To overcome emission problems of small-scale batch operated combustion systems a new thermal treatment process was developed to incinerate small batches of residues containing precious metals. The thermal treatment of single batches is necessary to start the recycling of the precious metals and to refund the customers delivering the residues. The new process is divided in a pyrolysis and a subsequent oxidation step. With conventional control techniques it was not possible to operate the system reliably with all different types of residues. Fuzzy-logic controllers were combined with new O2/PIC sensors in order to control the gasification process and to optimize the afterburner for low NOx operation. The main focus was to maintain a constant release of volatiles during the pyrolysis process.
The emissions of the overall process were reduced considerably. Furthermore, as a result of reduced peak loads by direct control of the pyrolysis, the size of the flue gas treatment systems can be reduced for new plants. The developed control techniques are now ready for application with other batch operated thermal processes.


Articles with similar content:

CARBON BLACK AND HYDROGEN DIRECT FROM HYDROCARBONS
Progress in Plasma Processing of Materials, 1997, Vol.1, 1997, issue
Steinar Lynum, Aud N. Waernes , Ola Raaness
METALLIC HIGH TEMPERATURE HEAT RECOVERY SYSTEM
International Heat Transfer Conference 7, Vol.16, 1982, issue
M. E. Ward, C. J. Dobos
WASTE AND BIOMASS TREATMENT EMPLOYING PLASMA TECHNOLOGY
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.8, 2004, issue 2
Vitas Valincius, Viktorija Valinciute, Vladas Mecius, Romualdas Kerzelis
ON-LINE DIAGNOSTIC OF THE GASEOUS EFFLUENT OF A FLY ASH TREATMENT PLASMA PROCESS: SET-UP OF A CHEMICAL BALANCE
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.5, 2001, issue 2
Jacques Amouroux, F. Genet, S. Cavadias, M. F. Gonnord, K. Coulibaly
REACTIVITY STUDIES OF MALAYSIAN COALS FOR CLEAN ENERGY SYSTEMS
Energy and the Environment, 1998, Vol.0, 1998, issue
Faisal M. A. Mahdi, Ahmad-Faris Ismail