Air inlet control method for oxygen-enriched hot blast stove

Abstract

The invention discloses an air inlet control method for an oxygen-enriched hot blast stove, and particularly relates to an air inlet control method of the oxygen-enriched hot blast stove. The air inlet control method of the oxygen-enriched hot blast stove comprises the following specific steps that S1, fuel and gas are input into a furnace and ignition is carried out; S2, the combustion temperature in the furnace is detected, wherein A, the detection temperature is within the range of 900 DEG C to 1400 DEG C and is regarded as normal combustion, and regulation and control is not needed, B, the detection temperature is greater than 1400 DEG C and is regarded as an abnormal combustion temperature, and the regulation and control is needed, and C, the detection temperature is less than 900 DEG C and is regarded as the abnormal combustion temperature and the regulation and control is needed; and S3, the air inflow and the proportion are regulated and controlled according to a detection result. The ironmaking is guaranteed to be within a stable temperature range, the temperature can be accurately controlled by means of a mode of intelligent temperature detection and regulation and control, the use of manpower for controlling the temperature is reduced, the functions of saving resources is achieved while the normal work is ensured.

Description

technical field [0001] The invention relates to the technical field of air intake control for Fuyang hot blast stoves, in particular to an air intake control method for oxygen-enriched hot blast stoves. Background technique [0002] The hot blast stove is a thermal power machine, which was widely used in our country in the late 1970s. It has become a replacement product for electric heat sources and traditional steam power heat sources in many industries. There are many varieties and complete series of hot blast stoves, which are divided into two types: hand-fired and machine-fired according to the way of coal feeding, and divided into coal, oil, and gas stoves according to the type of fuel. [0003] The process of extracting metallic iron from iron-containing minerals (mainly iron oxides) mainly includes blast furnace method, direct reduction method, smelting reduction method, and plasma method. From the perspective of metallurgy, ironmaking is the reverse behavior of iron...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide an air intake control method of an oxygen-enriched hot blast stove to solve the problem that the existing oxygen-enriched hot blast stove for ironmaking proposed in the background technology is not accurate enough for internal temperature control. It is not easy to control, so that the range of temperature changes is relatively large, which affects the quality of finished ironmaking products

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