Oxygen-fuel combustion calcium aluminate furnace

Abstract

The invention relates to an industrial steelmaking melting device, in particular to an oxygen-fuel combustion calcium aluminate furnace which comprises a furnace body and an oxygen-fuel combustion device. The oxygen-fuel combustion device is installed on the furnace body, a melting tank is arranged in the furnace body, a feeding port is formed in the part, at one end of the melting tank, of the furnace body, and a flowing port communicating with the outside is formed in the other end. A smoke outlet and the feeding port or a discharging port can be designed to be distributed in parallel according to the actual situation of a construction site, multiple sets of spray burning ports are formed in the parts, on the two sides of the melting tank, of the furnace body, and the outlet end of the smoke outlet is connected with a smoke discharging, dust removing and cooling device. According to the industrial steelmaking melting device, calcium aluminate raw materials are melted in the melting tank and flow out through the discharging port, the thermal efficiency and the utilization rate are improved through the oxygen-fuel combustion device, no desulfurization and denitrification device isneeded, and environmental protection and energy conservation are achieved. Compared with a traditional air combustion-supporting calcium aluminate kiln, the energy-saving effect is better, the waste gas discharge amount is smaller, and meanwhile use of refractory materials and the labor cost are reduced.

Description

technical field [0001] The invention relates to an industrial steelmaking refining agent melting device, in particular to an all-oxygen combustion calcium aluminate furnace. Background technique [0002] Calcium aluminate is a series of inorganic compounds formed by melting calcium oxide and alumina at high temperature. It is used in iron and steel smelting because of its excellent purification effect on molten steel. [0003] In the production of calcium aluminate, it is necessary to use a furnace to melt the material. At present, most of the existing furnaces use air to support combustion. 78% of the nitrogen in the air will inevitably react with oxygen in the high-temperature furnace to form nitrogen oxides. Nitrogen oxide furnace tail gas removal costs are high, which is difficult for enterprises to bear. They always discharge the furnace tail gas containing nitrogen oxides directly, causing serious air pollution; in addition, the thermal efficiency of regenerative furna...

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Problems solved by technology

[0003] In the production of calcium aluminate, it is necessary to use a furnace to melt the material. At present, most of the existing furnaces use air to support combustion. 78% of the nitrogen in the air will inevitably react with oxygen in the high-temperature furnace to form nitrogen oxides. Nitrogen oxide furnace tail gas removal costs are high, which is difficult for enterprises to bear. They always discharge the furnace tail gas containing nitrogen oxides directly, causing serious air pollution; in addition, the thermal efficiency of regenerative furnace fuel is low, and the regenerative chamber Waste a lot of refractory materials and labor costs

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