Method and system for estimating the shape of material surface in blast furnace material distribution process

Abstract

The invention provides a method and system for estimating charge surface shapes in the blast furnace charge distribution process. The method includes the steps that the blast furnace charge distribution process parameters, the furnace charge parameters and the charge distribution matrix are obtained; the abscissa of the pile cuspidal point of a charge pile formed by the furnace charge at each chute dip angle is computed; the charge surface shape of the furnace charge at the first-chute dip angle is computed; and according to the volume constraint that the furnace charge at each chute dip angle meets, the charge surface shapes of the furnace charge at the previous chute dip angles and the charge surface shape of the basic charge surface, the charge surface shape at the second-chute dip angle is obtained, charge surface shape computing is conducted in a successive iteration manner till the nth charge surface shape of all the charge surface shapes at the chute dip angles is distributed and obtained, and the estimation result of the charge surface shapes in the blast furnace charge distribution process is obtained. The system comprises a collection module, an abscissas computing module, a first charge surface shape computing module and a charge surface estimation module. According to the method and system for estimating the charge surface shapes in the blast furnace charge distribution process, a computing basis is provided for the charge surface shapes under different charge distribution systems, precise estimation of the charge surface shapes in a blast furnace is achieved, the charge distribution system is adjusted in real time according to the furnace conditions, furnace charge distribution is changed, the gas utilization rate is increased, and therefore the blast furnace can operate stably and smoothly.

Description

technical field [0001] The invention belongs to the field of automatic control of blast furnace smelting, and in particular relates to a method and system for estimating the shape of a material surface in a blast furnace material distribution process. Background technique [0002] Blast furnace charge distribution operation is one of the four basic operating systems of blast furnace ironmaking, which determines the shape of the charge surface and the layered distribution of charge inside the blast furnace. It directly affects the gas flow distribution and gas utilization rate in the upper part of the blast furnace. Adjusting the shape of the material surface through the material distribution system can make the gas flow inside the blast furnace reasonably distributed, increase the utilization rate of gas, and achieve the effect of high production and high efficiency, which has far-reaching significance for the stability and smooth operation of the blast furnace. However, th...

AI Technical Summary

Problems solved by technology

It uses 6-point radar data to estimate the shape of the material surface. The disadvantage is that the 6-point radar data cannot accurately estimate the shape of the material surface, and most of the blast furnaces have not yet installed multi-point radar devices.

Images