Quadrangular-pyramid-shaped material layer loosening filler

Abstract

The invention relates to a quadrangular-pyramid-shaped material layer loosening filler. The quadrangular-pyramid-shaped material layer loosening filler comprises supporting columns and stiffening plates, wherein the four supporting columns are fixed at the same end point; the included angle between every two adjacent supporting columns is 109.47 DEG; any two of the supporting columns are connectedand fixed by the stiffening plates; and in use, the filler is evenly distributed in high-temperature material solid particles recovered from gas-solid contact waste heat. According to the quadrangular-pyramid-shaped material layer loosening filler, the material layer can be effectively loosened, so that the voidage of the layer is increased, and the filling structure of gas flow resistance in a solid particle material layer is improved; and a waste heat recovery shaft furnace process is adopted for heat recovery, so that the energy consumption of an air feeding draught fan is significantly reduced, and the cooling process is more balanced and more efficient. The quadrangular-pyramid-shaped material layer loosening filler has the advantages that the thermal conductivity is great, the thermal stability is great and specific surface area is large, so that the heat exchange efficiency between gas and solid is improved, and the cooling height of the material layer is effectively reduced. Due to the structural features of the quadrangular-pyramid-shaped material layer loosening filler, the particulate material and the material layer loosening filler are easy to separate by mechanical sieving in a subsequent section.

Description

Technical field [0001] The invention relates to the field of solid material waste heat recovery, in particular to a tetragonal loose material layer filler for gas-solid contact waste heat recovery. Background technique [0002] At present, the waste heat recovery shaft furnace is a common gas-solid contact heat transfer equipment, which is widely used because of its high heat exchange efficiency and environmentally friendly operation, such as dry quenching furnaces and sintering shaft furnaces. In the waste heat shaft furnace, high-temperature (500-1100°C) solid particles and circulating cooling gas flow countercurrently to complete the convective heat exchange process. The high-temperature gas after heat exchange enters the follow-up section through the exhaust port for waste heat recovery, and the cooled low-temperature (50-200°C) solid particles are discharged from the bottom of the shaft furnace. [0003] The operating energy consumption of the waste heat recovery shaft mainly...

AI Technical Summary

Problems solved by technology

Therefore, when using the principle of waste heat recovery shaft furnace to recover the heat of high-temperature granular materials with small porosity and average particle size, high gas flow resistance will be generated, the energy consumption of operation will be too high, and even the air supply system cannot provide the rated circulating air volume. Cause waste heat recovery shaft furnace to fail to operate normally

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