Fly ash air-cooling drying system and process

Abstract

The invention discloses a fly ash air-cooling drying system and process. The low-temperature drying system comprises an air-cooling circulating drying device and a finished product bin. According to the fly ash air-cooling drying process, circulating air at the temperature of 70 DEG C or below in the air-cooling circulating drying device is used for carrying out drying treatment on washed fly ash and related products of the fly ash, so that generation of heat-sensitive pollution factors such as dioxin can be avoided, and the defects of complicated equipment system, high energy consumption, small terrestrial heat, large-scale dust raising, high-index atmospheric emission and the like accompanying a traditional high-temperature drying process can be avoided, a discharged finished product material does not need to be cooled or maintained additionally and can directly enter a downstream process or be stored and the like, and the fly ash air-cooling drying system and process have the characteristics of safety, high efficiency, low consumption, energy conservation, low carbon, environmental protection, high comprehensive economy and the like.

Description

technical field

[0001] The invention belongs to the field of fly ash disposal, and in particular relates to an air-cooled drying system and process for fly ash, which is mainly used for drying fly ash after water washing and its related products or high heat-sensitive materials. Background technique

[0002] At present, the washing and drying unit of fly ash in incineration process is an important part of the washing treatment line. The general drying method is to use high-temperature steam, flue gas and other heat sources to process the washed fly ash materials such as drums, drums, and coils. Paving heating and other high-temperature drying processes, such as Chinese patent CN 206897216 U discloses a fly ash dry and wet material mixer, a fly ash drying system and a fly ash processing system, including a cylinder, the cylinder is provided with a spindle , the main shaft is provided with multiple sets of coulter assemblies, one end of the outer side of the cylinder is provid...

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