Method for calculating blast momentum in blast furnace production process

Abstract

The invention provides a method for calculating the blast momentum in a blast furnace production process, wherein the real-time blast momentum in the blast furnace production process is calculated according to the controllable operation parameters of blast furnaces with different converter capacities during the daily production process, and the controllable operation parameters comprise the coefficient, the blast furnace blast volume GFL, the rich oxygen content FYL in the blast, the blast humidity GFSF, the hot air temperature RFWD, the blast pressure GFYL, the working air port number FKGS, the nitrogen density k1, the oxygen density k2, the gravity acceleration k3, the water vapor density, the Kelvin temperature k5 at the temperature of 0 DEG C, and the atmospheric pressure k6 under thestandard state. According to the present invention, with the method, the reasonable blast momentum can be onlinely and real-timely controlled during the blast furnace production, such that the reasonable daily blast furnace production operation is performed from the formation and control angle of the reasonable coal gas flow inside the furnace hearth so as to ensure the long service life of the blast furnace and the low consumption, stability and smooth operation of the production.

Description

technical field [0001] The invention belongs to the technical field of ironmaking, and in particular relates to a method for calculating suitable blast kinetic energy in blast furnace production according to different operating parameter conditions of the blast furnace. Background technique [0002] Modern iron and steel complexes have extremely high requirements on the continuity and stability of production, and blast furnace ironmaking is the throat of modern iron and steel enterprises. The safety, stability and smooth operation of blast furnaces are of great significance to the logistics balance of the entire iron and steel production. The good operation of the blast furnace lies in the formation of the initial gas flow in the furnace and the reasonable distribution of the secondary and tertiary gas flow, and the generation and reasonable distribution of the gas flow mainly depend on the appropriate blast kinetic energy in production. Therefore, reasonable control and adj...

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Problems solved by technology

"Discussion on Blast Furnace Blast Kinetic Energy at High Coal Injection" ("Hunan Metallurgy", 2006, Volume 34, Issue 3, 21), "The Influence and Control of Blast Furnace Kinetic Energy on Blast Furnace Smelting" ("Ironmaking", 2005) , 24 volumes, 4th issue, 6), "Controlling appropriate blasting kinetic energy to ensure stable and high production of blast furnace" ("Journal of Anhui University of Technology", 2003, 20th volume, 4th issue, 235) etc.) They also analyzed the impact of blast kinetic energy on the initial gas flow distribution of the blast furnace from different angles. However, most of these documents are aimed at a certain fixed blast furnace, using simple mathematical methods to calculate, and still fail to achieve different furnace capacities in production. The determination method of the suitable blast kinetic energy of the blast furnace, so it has not achieved a major technological breakthrough

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