Dust level monitoring alarm device for gravity dust remover of blast furnace and monitoring alarm method

Abstract

The invention discloses an ash level monitoring alarm device for a gravity dust remover of a blast furnace. When dust in the gravity dust remover is accumulated to a height position A, the dust is required to be unloaded, a high-level temperature sensor is arranged at the height A in the gravity dust remover, the high-level temperature sensor is connected with the signal input end of a controller through a signal line, and the output end of the controller is connected with a high-level alarm through a signal line. According to the low-ash-level alarm system device of the gravity dust remover, the ash discharging can be stopped before the low-ash-level gas and dust are leaked, so that the safe and stable production of the blast furnace and the personal safety of personnel in the operation area are ensured.

Description

Technical field [0001] The invention relates to the technical field of remote ash unloading control of a blast furnace gravity dust collector. Background technique [0002] The blast furnace of the iron and steel metallurgical industry will produce a lot of dust during the production process. The gravity dust collector of the blast furnace is the primary dust removal device of the raw gas dust removal system. The dust removal principle is to suddenly reduce the gas flow velocity and change the flow direction. The larger particles of dust are in gravity and inertia. Under the action of force, it is separated from the gas, settled to the bottom of the cone of the dust collector, and discharged through the ash discharge device to the mixer. The dust removal rate can reach 60%. [0003] In normal production, the blast furnace gravity dust collector generally adopts timing unloading. After confirming the position of the tank car when unloading, put down the soft connection, start the hu...

AI Technical Summary

Problems solved by technology

[0004] 1. The accuracy is not high and it is easy to misjudge;

[0005] 2. Relatively fixed full-time operators are required;

[0006] 3. Since the ash level in the gravity dust collector cannot be monitored and accurately displayed in time, as the ash level decreases during the ash unloading process, the fluctuation of the air flow in the blast furnace may cause the ash level in the gravity dust collector to be too low, resulting in gas leakage and a large amount of dust Occurrence of serious accidents such as leakage

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