THE GENERAL PRINCIPLES OF WASTE PROCESSING WITH RECOVERY OF THEIR ENERGY POTENTIAL ON THE BASIS OF PLASMA TECHNOLOGIES. PART II. GASIFICATION OF THE SEWAGE SLUDGE OF WASTEWATER TREATMENT PLANTS
Abstract
The work is dedicated to the development of technologies for processing of carbon-containing hazardous waste, in first of all — the sewage sludge of wastewater treatment plants, based on the use of plasma energy sources. The aim was to enhance prospects of their use on the basis of opportunities for commercialization of the proposed technology. In accordance with the thermodynamic approach proposed in the first part of this paper, evaluate performance of the facilities of gasification based on the use of plasma-steamevaluate performance of the facilities of gasification based on the use of plasma-steam technology depending on the power used by the plasma torches as well as their energy efficiency was performed. It is shown that in the stoichiometric mode of the synthesis gas production the energy costs of the gasification process are close to the level of the synthesis gas energy to be obtained. This provides good preconditions for high energy efficiency of processing of various wastes of similar composition in conditions of mobile equipments, as practically eliminated the need for additional sources of energy. In the mode of additional introduction of oxygen in gasification process, the consumption of synthesis gas for own needs equipments, is about 30 %. The rest can be used for the production of electricity to external consumers that will promote commercialization of development. Thus, in the proposed variant the processing technology correspond to the general idea of numerous publications in the world literature, known as the Waste to Energy. Bibl. 27, Fig. 6, Tab. 5.
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