Online detection and control system for flame combustion uniformity in sintering ignition furnace

Abstract

The invention provides an online detection and control system for flame combustion uniformity in a sintering ignition furnace. The system comprises a dust removal and blowing system, a high-temperature infrared thermal imager, a swing system and burners; the swing system is arranged above a furnace charge, the high-temperature infrared thermal imager is installed on the swing system, the dust removal and blowing system is installed in front of and above the high-temperature infrared thermal imager, and the high-temperature infrared thermal imager is used for detecting temperature data and transmitting the temperature data to an industrial control machine; the burners are uniformly installed inside the sintering ignition furnace, the burners are connected to an air pipeline and a coal gas pipeline through electric adjusting valves, and the electric adjusting valves are correspondingly connected to the industrial control machine through power lines; and the industrial control machine adjusts the internal specific temperature of the ignition furnace by adjusting the coal gas flow and the air flow through the electric adjusting valves. According to the system, the problem that the adjustment cannot be carried out in a targeted mode is overcome, the flame combustion uniformity can be timely adjusted on line, the necessary temperature of a sintered material surface is ensured, the sintering and ignition energy consumption is reduced, the surface quality of a sintered ore is improved, and the productivity of the sintered ore is improved.

Description

technical field [0001] The invention belongs to the technical field of ironmaking and sintering production, and in particular relates to a detection and control system for flame combustion uniformity in an online sintering ignition furnace. Background technique [0002] The purpose of sintering ignition is to heat the sintering mixture that has been distributed on the trolley to a semi-molten state, and ignite the solid fuel in the mixture on the surface of the trolley, so that it can be sintered from top to bottom under the action of draft. Under normal circumstances, the ignition temperature should be controlled between 1050 and 1150 °C. If it is lower than 1050°C, it is not easy to burn the surface mixture to a semi-molten state, which will affect the yield; if it is higher than 1200°C, it will easily cause the surface mixture to burn and crust, increase the air resistance of the surface layer, and affect the sintering and sintering speed. . [0003] The existing sinter...

AI Technical Summary

Problems solved by technology

In order to overcome the problem that the existing sintering ignition furnace control method depends on the pyrotechnics to judge with the naked eye and cannot be adjusted in a targeted manner

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