Garbage prewarming and drying arrangement

Abstract

The invention discloses a garbage preheating and drying device, which consists of a framework, fire grate segments and a drying air chamber, the fire grate segment is cast by heat-resistant cast iron or heat-resistant cast steel and is arranged above the framework; a front-end positioning orifice and a back-end positioning orifice are arranged in the inner side of the fire grate segment, and tapered-distributing air vents are arranged on the fire grate segment; the rear of the drying device is steeped inside a circulating fluid bed dense-phase region and is built by laying heat-resistant and wear-resistant materials. The garbage preheating and drying device adopts one level arrangement or two-level arrangement, wherein in the two-level arrangement, a front level and a back level are arranged in a staged way. The preheating and drying device in each level consists of over two rows of the fire grate segments, and each row has over two fire grate segments; each row of the fire grate segments are positioned by a front-end positioning shaft and a back-end positioning shaft; the front and the back rows of the fire grate segments are arranged in in the staged way. The garbage preheating and drying device has the advantages that the staged combination of multiple rows of the fire grate segments not only improves drying effect, but also prevents structure destroy caused by heat expansion; the staged arrangement of the two-level drying devices leads garbage to fall off and become loose in the drying process, thus improving the garbage drying effect.

Description

technical field [0001] The invention relates to a garbage preheating and drying device, which belongs to the field of energy machinery. Background technique [0002] In the process of incinerating domestic waste in a circulating fluidized bed waste incinerator, the moisture content and its changes in the waste have an important impact on the stability of the incinerator's operation and the burnout rate of the waste. At the same time, the moisture content of garbage has a close relationship with the calorific value of garbage. Generally speaking, the higher the moisture content of garbage, the lower the calorific value of garbage. In order to achieve stable combustion of garbage, the more auxiliary fuel needs to be added during the combustion process. , thereby increasing the operating cost of the incinerator. In order to improve the operation stability and waste burnout rate of the incinerator, and reduce the operating cost of the incinerator, it is particularly important t...

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Problems solved by technology

But the patent does not give the structural features of the drying device

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