Calcining-kiln waste-heat utilization device for high-void rate shale hollow blocks

Abstract

The invention discloses a calcining-kiln waste-heat utilization device for high-void rate shale hollow blocks. The calcining-kiln waste-heat utilization device comprises a drying tunnel kiln and a calcining tunnel kiln, a primary air supplying mechanism is arranged between the drying tunnel kiln and the calcining tunnel kiln, air inlets of the primary air supplying mechanism are communicated with a cooling section of the calcining tunnel kiln through air draft pipelines, an air outlet of the primary air supplying mechanism is connected with a secondary air supplying mechanism through a primary air supplying pipeline, the secondary air supplying mechanism is mounted on the drying tunnel kiln, an air outlet of the secondary air supplying mechanism is connected with at least two tertiary air supplying mechanisms through secondary air supplying pipelines, and air outlets of tertiary air supplying mechanisms are communicated with the cavity of the drying tunnel kiln through tertiary air supplying pipelines. The calcining-kiln waste-heat utilization device has the advantages of simple structure, heat energy is reasonably utilized by using waste heat generated from an existing cooling section for blank drying, and the problem about waste in heat energy of tunnel kilns is solved.

Description

technical field [0001] The invention relates to the technical field of brick production, in particular to a waste heat utilization device of a high porosity shale hollow block roasting kiln. Background technique [0002] At present, most of the hollow bricks produced in China adopt single-channel or double-channel tunnel kilns. The characteristic of this kind of tunnel kiln is that a tunnel-like channel is built with refractory materials and thermal insulation materials according to technical requirements, and two tracks are set at the bottom of the channel. The hollow blocks to be fired are stacked on the kiln cars according to the requirements, and the kiln cars are sent into the kiln from outside the tunnel kiln, and then output after drying and preheating, roasting, cooling and other stages. [0003] Before the hollow blocks are roasted, in order to improve the yield of bricks, it is necessary to dry and preheat the hollow blocks. In the prior art, a dedicated heat gen...

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-porosity shale hollow block roasting kiln waste heat utilization device, which uses the waste heat generated in the cooling section for hollow block drying, and can rationally utilize heat energy. Solve the problem of heat energy waste in existing tunnel kilns

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