Integral sludge incineration system for circulating fluidized bed

Abstract

The invention discloses an integral sludge incineration system for a circulating fluidized bed, which includes an incinerator, a separator, a pneumatic distribution valve, a drying machine, a fine ashseparator, a condenser, a steam and water separator, a first blower, a tail heating surface, a dust remover, an induced draft fan and a chimney, wherein the upper part of the incinerator is connectedwith the separator and the tail heating surface respectively; the lower part of the separator is connected with the incinerator and the drying machine respectively through the pneumatic distributionvalve; dried sludge in the incinerator sequentially passes by the fine ash separator, the condenser and the steam and water separator, and then is conveyed into the incinerator under the action of thefirst blower; the tail heating surface is connected with the drying machine through circulating conduction oil, and high temperature flue gas inside the tail heating surface passes by the dust remover, and then is discharged from the chimney under the action of the induced draft fan. According to the invention, sludge drying and incineration are organically integrated, so that consumption of auxiliary fuel during sludge incineration is greatly reduced, and the drying and incineration technology is greatly simplified; and the system has the characteristics of simple operation, wide adjusting range, good control performance, low production cost, and the like.

Description

technical field [0001] The invention relates to the technical field of sludge incineration, in particular to a circulating fluidized bed integrated sludge incineration system. Background technique [0002] As my country's population continues to increase, secondary pollution from sewage sludge follows. Due to the presence of organic pollutants, heavy metals, parasites, germs, and corrosion in sludge, if not properly treated, it will seriously affect the ecological environment. Under normal circumstances, sludge treatment mainly includes reclamation, landfill, incineration, land utilization and other forms. However, in recent years, due to the country's gradual restrictions on sludge composting and landfilling, and the prohibition of putting sludge into the sea, the main method of sludge treatment today is incineration. Incineration treatment can carbonize organic matter in sludge, completely kill pathogens, minimize sludge volume, and greatly reduce the impact of sludge on...

AI Technical Summary

Problems solved by technology

However, the drying and incineration of sludge are inseparable and carried out separately. Not only are there many equipments and energy consumption, but also the site is large and the processing cost is high.

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