Sludge desiccation burning integral treatment method and device

Abstract

An integrated sludge drying and incineration treatment method, transporting the sludge to a rotary sludge drying device, and introducing a part of the medium-temperature hot flue gas in the fluidized bed incineration device into the rotary sludge drying device The water in the sludge is evaporated by internal heating, and the semi-dried sludge obtained is sent to the fluidized bed incinerator, and the other part of the medium-temperature hot flue gas is sent to an air preheater, and the fluidized bed incinerator The primary and secondary air for heating. Part of the ash and bed materials discharged from the fluidized bed incineration device are transported to the rotary sludge drying device and mixed with the sludge in the rotary sludge drying device. The device for realizing the above method is composed of a storage feeding device, a rotary sludge drying device and a fluidized bed incineration device. The invention realizes the integration of drying and incineration, saves intermediate links such as sludge cooling, storage, transportation and drying heat medium transportation between drying and incineration, simplifies the system, reduces land occupation, and reduces investment costs.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a sludge drying and incineration device, in particular to a sludge drying and incineration integrated treatment method and device. Background technique [0002] Sludge is a solid, semi-solid and liquid product produced in the sewage treatment process. It contains a large amount of organic matter, heavy metals, pathogenic bacteria and pathogenic bacteria. If it is discharged without treatment, it will cause serious pollution to the environment. In the prior art, the sludge treatment method mainly adopts the incineration method. The incineration method has the advantages of fast processing speed, harmlessness, and high degree of reduction, especially for areas where land resources are scarce, or where the content of toxic and harmful substances is high. For industrial sewage sludge, incineration is the only effective treatment method. The sludge incineration technologies mainly include gra...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an integrated treatment method of sludge drying and incineration. The integrated treatment method of sludge drying and incineration should solve the problems of drying and incineration in the sludge treatment process in the prior art. Separation of process and equipment, complex system, low reliability, large heat loss, low thermal efficiency, many equipment, large land occupation, high cost, many transportation links and auxiliary equipment

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