tailieunhanh - Waste Management 2009 Part 9

Tham khảo tài liệu 'waste management 2009 part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Thermal Conversion Technologies for Solid Wastes A New Way to Produce Sustainable Energy 137 The co-incineration is a thermal destruction technique applied to several industrial solid wastes and these wastes are valorised as raw-materials and or fuels. Several industrial process which works at high temperatures can be used for waste elimination taking advantage of their calorific power. The elimination of industrial wastes with a calorific power minimum of 5000 kJ kg in an industrial process can be considered as a technique with energetic valorisation Oliveira 2005 . This method of thermal destruction of solid wastes has several benefits even as an environmental perspective but also and more important as an energetic perspective because enables to substitute fossil fuels like fuel oil natural gas etc. by dangerous wastes. These wastes are valorised in two forms can be used as raw materials and as fuel supplier to burning furnaces Puna 2002 . However the substitution of fossil fuels by dangerous wastes cannot increase the atmospheric pollutants emissions resulting from combustion processes in comparison with the normal use of conventional fuels. Pio et. al. 2003 . Fig. 5. Typical diagram of a co-incineration process of dangerous solid wastes http english discoveries special images . The co-incineration can be conducted in different industrial processes like for instance in cement furnaces or in industrial boilers. Nevertheless the co-incineration in cement furnaces is considered the most efficient process of co-incineration especially to dangerous solid wastes Formosinho et. al. 2000 . The combustion of wastes in cement furnaces occurs at the same time with the production of clínquer cement product intermediate . The main characteristics in the co-incineration process of solid wastes in cement furnaces are the follow ones Scoreco 1997 138 Waste Management Thermal valorisation method alternative to dedicated incineration only applied to

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