Blast-furnace hot blast stove pressure-stabilizing stove changing system applied to metallurgy

Abstract

The invention relates to the technical field of metallurgical emergency disposal, in particular to a blast-furnace hot blast stove pressure-stabilizing stove changing system applied to metallurgy. Theblast-furnace hot blast stove pressure-stabilizing stove changing system comprises a blast furnace, a first hot blast stove, a second hot blast stove, a third hot blast stove, a main fan, an air delivering pipe, a combustion-supporting air pipe, a gas pipe, an exhaust gas pipe, a hot air pipe and a controller; the first hot blast stove, the second hot blast stove and the third hot blast stove allcommunicate with the hot air pipe; the blast furnace communicates with the hot air pipe; pressure sensors are arranged in the blast furnace, the first hot blast stove, the second hot blast stove, thethird hot blast stove and the main fan correspondingly; and the main fan and the pressure sensors are in signal connection with the controller, and the controller receives signals transmitted by thepressure sensors to control the flow of the main fan. The problems that as for stove changing operation of the hot blast stoves in existing production, according to traditional operation, heating is needed for heat storage, then air supply is conducted, heating and air supply are conducted alternately, air pressure fluctuation is often caused to the blast flow and temperature of the blast furnacedue to the operation of opening and closing of all valves, and consequently the blast furnace is prone to material sliding are solved.

Description

technical field [0001] The invention relates to the technical field of metallurgical emergency treatment, in particular to a blast furnace hot blast furnace voltage stabilizing furnace replacement system applied to metallurgy. Background technique [0002] The hot blast stove is an accessory device that provides high-temperature hot air for the blast furnace. During the operation of the hot blast stove, the stability and continuity of the air supply to the blast furnace must be ensured to prevent vicious production accidents. [0003] The Chinese patent with the publication number CN1888085A, "A Method for Changing Furnace Without Fluctuation of a Hot Blast Stove" discloses a method based on an independent compressed air source instead of the blast furnace cold air as the gas source for pressure equalization, which is mainly used in the power provided by the main fan. Insufficient situation, but in the furnace replacement operation of the hot blast stove in the existing prod...

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Problems solved by technology

[0004] The present invention is aimed at the furnace replacement operation of the hot blast stove in the existing production. The traditional operation requires heating to store heat, and then blows air. The heating and blowing are carried out alternately. Often, the operation between the opening and closing of each valve will affect the blast furnace blast flow rate, Wind pressure fluctuations caused by temperature can easily lead to the problem of blast furnace material slippage. Provide a blast furnace hot blast stove voltage stabilization and furnace replacement system applied to metallurgy

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