Method for reclaiming coal gas of converter through guidance of mathematical model

Abstract

The invention relates to a method for reclaiming coal gas of a converter through guidance of a mathematical model, which belongs to the technical field of metallurgical steelmaking and is used for solving the problem that caloric value of the coal gas of the converter can only be detected by a testing method. The method adopts the following technical scheme that: a mathematical model of the CO content which is reclaimed at the beginning and is refused to be reclaimed by the converter coal gas and the caloric value and the reclaiming amount of the converter coal gas is established; and a computational formula of the caloric value and the reclaiming amount of the converter coal gas is given out; and the computational formula of the coal gas caloric value Y1 is as follows: Y1=842.28e<1.8246>X, and X is more than or equal to 25 percent and less than or equal to 75 percent. According to field detection data, the mathematical model of the CO content which is reclaimed and is refused to be reclaimed by the converter coal gas and the caloric value and the reclaiming amount of the converter coal gas is established, and the computational formula is formed. By adopting the computational formula, according to the field practical situation the value of the CO content which is reclaimed and refused to be reclaimed by the converter coal gas can be adjusted and the caloric value and the reclaiming amount of the converter coal gas can be rapidly calculated, so that the reclaiming amount of the coal gas is improved and the method is favorable for a converter coal gas user to perform smooth production.

Description

technical field [0001] The invention relates to a recovery technology of converter gas for steelmaking, in particular to establish a mathematical model for starting recovery of converter gas, refusing to recover CO content, calorific value of converter gas and recovery amount, and using the mathematical model to guide recovery of converter gas, which belongs to metallurgy The field of steelmaking technology. Background technique [0002] Converter gas is a relatively high-quality gas. Converter gas users in iron and steel enterprises are mainly ironmaking hot blast stoves, steelmaking ladle baking, steel rolling heating furnaces, and recycling boilers. During normal production and recovery of converter gas, all the gas used for baking in steelworks is converter gas. Baking ladles in steelmaking plants and heating furnaces in hot rolling mills require that the calorific value of the mixed gas is stable at 1800±100 kcal / Nm3, so that the quality of ladle baking in steelmaking ...

AI Technical Summary

Problems solved by technology

At present, the CO content value is not adjusted at the converter steelmaking site, because if the set value of the CO content is adjusted, the corresponding converter gas calorific value can only be detected by the test method, and the test detection time generally takes 4 hours to complete. During this period, converter gas users cannot obtain accurate data on the calorific value of converter gas

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