Online measuring method of metallurgical gas calorific valuebased on combustion system running parameters

Abstract

The invention discloses an online measuring method of a metallurgical gas calorific value based on combustion system running parameters. The online measuring method comprises the following steps thatreal-time data of the running parameters of a combustion system is obtained; the collected data are preprocessed to obtain effective data used for calculating the gas calorific value; and a gas dry base calorific value is calculated based on the obtained effective data. According to the method, the gas dry base calorific value is calculated through the relationship between the dry air volume and the gas calorific value. Calculating results can be used for guiding combustion optimization adjustment of combustion equipment to provide reference for safe and economical running of the combustion equipment. Through the online measuring method, inconvenience and difficulty caused by the fact that currently, in most gas combustion systems of steel mills, combustion equipment is not provided with an online gas calorific value analyzing device are removed, and high engineering practical value is achieved.

Description

technical field [0001] The invention relates to the technical field of energy saving of combustion equipment, in particular to an online calculation method for the calorific value of metallurgical gas based on the operating parameters of the combustion system. Background technique [0002] Iron and steel enterprises produce a large amount of by-product metallurgical gas in the production process, including blast furnace gas, converter gas and coke oven gas. Among them, blast furnace gas and converter gas have a large calorific value but low calorific value. Therefore, their efficient utilization has always been An important way for steel mills to reduce costs, increase efficiency, and improve market competitiveness. [0003] At present, steel mills mainly digest blast furnace gas and converter gas through equipment such as gas boilers, steel rolling heating furnaces, blast furnace hot blast stoves, and ladle bakers. For these combustion equipment, the calorific value of fue...

AI Technical Summary

Problems solved by technology

However, due to limited conditions, most iron and steel enterprises have not equipped combustion equipment with on-line gas calorific value measuring devices, and steel mills basically still use manual input of periodic laboratory analysis values ​​as the current gas calorific value.

In fact, due to the influence of factors such as the upstream smelting process, the composition and calorific value of the gas are difficult to keep stable and often fluctuate. To a certain extent, it interferes with the operation judgment of the operator and affects the optimal operation of the combustion equipment

[0004] There is a need for an online calculation method for the calorific value of metallurgical gas based on the operating parameters of the combustion system. The calorific value of the gas can be identified through the operating parameters of the combustion equipment. The results can be used to guide the combustion optimization adjustment of the combustion equipment and provide a basis for the safe and economical operation of the combustion equipment. , to solve the inconvenience and difficulty caused by the operation of most of the combustion equipment in iron and steel plants that are not equipped with gas calorific value online analyzers

Images