Safety alarm system for gas concentration in converter gas and method thereof

Abstract

The invention discloses a safety alarm system for gas concentration in converter gas and a method thereof, and the method comprises the steps: collecting electric signals containing gas in a converter gas treatment process, and forming a plurality of groups of electric signal arrays; constructing a gas detection model based on a Gaussian function; analyzing the electric signals in the plurality of groups of electric signal arrays by using the gas detection model to obtain the oxygen concentration value; and substituting the oxygen concentration value into a gas safety model for safety judgment operation, if the oxygen concentration value is within a set threshold range, realizing safety, and otherwise, triggering an alarm module for safety indication. Aiming at the defects in the existing equipment, the invention provides the converter gas concentration detection and alarm method which is ultrahigh in precision and rapid in operation, and the working efficiency and safety of converter gas are improved.

Description

technical field [0001] The invention relates to the technical field of safety detection of gas concentration in converter gas, in particular to a safety alarm system and method for gas concentration in converter gas. Background technique [0002] The gas produced by the converter during the production process is unstable and intermittent. During the oxygen blowing smelting process of the converter, the flue gas produced contains a large amount of carbon monoxide, carbon dioxide and a small amount of other gases. Under normal circumstances, these flue gases are dedusted by the dust removal system , washing, filtering, and after the gas concentration reaches the standard and the oxygen content meets the requirements, it enters the gas cabinet for recycling. [0003] Before the flue gas enters the dust removal fan, there is a laser detector in the dust removal pipe to detect the content of carbon monoxide and oxygen in the flue gas. When the oxygen concentration is lower than 2...

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Problems solved by technology

[0004] During the smelting process, the content of CO in the converter gas is also constantly changing with the composition and temperature of the molten iron. In the initial stage of blowing, the temperature of the molten iron is low, and the oxidation rate of carbon is also low, so less carbon monoxide is produced. As the furnace temperature rises, a violent reaction of carbon and oxygen occurs, which gradually increases the furnace gas production and carbon monoxide content to a relatively stable value. In the later stage of blowing, as the carbon in the molten iron decreases, the furnace gas volume decreases and the carbon monoxide content also decreases accordingly. It can be seen that the lower the limit value of oxygen content in converter gas is, the less likely it is that fire and explosion accidents will occur in the equipment. On the other hand, it also loses part of the energy and pollutes the environment. Therefore, accurate detection of the oxygen concentration in the converter gas is of great significance for determining the appropriate recovery of the oxygen content of the converter gas.

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