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Patent Searching and Data


Title:
METHOD AND DEVICE FOR DRYING SLUDGE, PARTICULARLY SEWAGE SLUDGE
Document Type and Number:
WIPO Patent Application WO2003050046
Kind Code:
A8
Abstract:
The invention relates to a method for drying sludge and to a device for carrying out the same. In prior art methods, sludge is usually dried in a fluidization dryer, whereby heated air is introduced and contaminated air is evacuated. The drawbacks of this include not only the high impact that the contaminated air has on the environment but, in particular, the high consumption of energy. This increases even further when energy is required for subsequent drying. The inventive method reduces the energy consumption namely by circulating the drying air in a closed circuit. In addition, the recycling of the drying air leads to the production of an evacuation air whose contamination is distinctly reduced. In addition, the dried sludge has a high homogeneity and a high degree of hygienization. The design of the inventive device is distinctly simplified whereby facilitating, in particular, the maintenance as well as the start-up and shut-down thereof.

Inventors:
CYGIELSKI MAREK (PL)
ZURAWSKI WLODZIMIERZ (PL)
Application Number:
PCT/IB2002/005767
Publication Date:
August 28, 2003
Filing Date:
December 10, 2002
Export Citation:
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Assignee:
KLIMAPOL SP Z O O J V (PL)
CYGIELSKI MAREK (PL)
ZURAWSKI WLODZIMIERZ (PL)
International Classes:
C02F11/12; C02F11/13; F26B3/08; F26B21/08; F26B23/02; F26B25/00; (IPC1-7): C02F11/12
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