Device for coproducing coal gas during solar calcining of material

Abstract

The invention designs a device for coproducing coal gas during solar calcining of a material. The device comprises a split calcining device, brine electrolysis oxygen generating equipment and a coal gas generating furnace, wherein the split calcining device comprises feeding equipment, a preheating chamber, a solar calcining chamber, a cooling chamber, a gas heating chamber and discharging equipment; the preheating chamber, the calcining chamber and the cooling chamber are connected through material conveying equipment; and the gas heating chamber and the calcining chamber are provided with solar compound optical heating systems respectively. In the device, the material is calcined by using a solar technology, so that non-renewable energy resources are saved, and the emission of greenhouse gas is avoided. Oxygen generated by brine electrolysis and carbon dioxide decomposed by limestone are taken as a thermal carrier for preheating a limestone material and cooling a lime product, and is also taken as a gasifying agent which enters the coal gas generating furnace for producing coal gas, so that the combination of two chemical processes, i.e., material calcining and coal gasifying is realized, energy sources are utilized effectively, and construction investment and production cost are saved.

Description

technical field [0001] The invention belongs to the technical field of new energy utilization and chemical production, and in particular relates to a device for jointly producing gas by using solar energy to calcinate materials. Background technique [0002] Lime is an important building material, and also an important raw material in metallurgy and chemical industry. The existing technology uses dolomite and limestone as raw materials, coal, coke or gas, natural gas and other gases as fuel, and is calcined into lime products in lime kilns. Such a process not only consumes a large amount of non-renewable fuel, but also emits a large amount of greenhouse gases such as carbon dioxide and other greenhouse gases into the atmosphere from fuel combustion and limestone decomposition, causing serious pollution to the atmosphere. The fuel and limestone raw materials contain impurities such as S and P, and the harmful gases produced after combustion are discharged into the atmosphere,...

AI Technical Summary

Problems solved by technology

This solar technology can heat liquids such as oil, but it cannot be used to calcinate materials. So far, no patent and non-patent technical literature reports on the use of solar technology to calcinate materials have been found.

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