Method and device for utilizing solar energy to calcine materials

Abstract

The invention relates to a method and a device for utilizing solar energy to calcine materials. The device comprises a feeding device, a preheating chamber, a calcining chamber, a cooling chamber, a discharging device and a waste gas discharging system. The processes for preheating, calcining and cooling the materials are respectively performed in the split type preheating chamber, the calcining chamber and the cooling chamber; materials among the preheating chamber, the calcining chamber and the cooling chamber are conveyed by a material conveying device; the calcining chamber is a solar energy calcining chamber, is heated to 800-1600 DEG C by solar energy and is used for calcining the calcined materials; and the limestone decomposition gas in the calcining chamber and the gas after cooling products in the cooling chamber are respectively used for preheating the materials in the preheating chamber. Solar energy technology is utilized to calcine the materials; the non-renewable energyresource is saved; the emission of greenhouse gas is reduced; the environmental protection is boosted; and CO2 gas after decomposing the limestone is collected singly, is high in purity and is capable of being directly applied to industry.

Description

technical field [0001] The invention belongs to the technical fields of building materials and chemical production, and relates to a method and equipment for split-type production of lime, in particular to a method and device for split-type solar calcined materials. Background technique [0002] Lime is an important building material, and also an important raw material in metallurgy and chemical industry. The prior art uses dolomite and limestone as raw materials, and adopts a vertical kiln with burning beams to calcinate lime. The disadvantage of this process is that the direction of the furnace gas flow in the shaft kiln is opposite to that of the stone material, that is, the stone material moves from top to bottom, and the furnace gas flows from bottom to top. Gas segregation phenomenon causes limestone to be heated unevenly and affects product quality. The applicant disclosed a utility model patent with the patent number ZL200320111077.3 for an internally and externally...

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that the direction of the furnace gas flow in the shaft kiln is opposite to that of the stone material, that is, the stone material moves from top to bottom, and the furnace gas flows from bottom to top. Gas segregation phenomenon causes uneven heating of limestone and affects product quality

No patent and non-patent technical literature on calcining materials using solar energy technology has been found so far

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