Blast furnace digital system implementation method based on computer simulation

Abstract

The invention provides a blast furnace digitization system implementation method based on computer simulation. The method comprises the following steps: dividing a blast furnace geometry in space, andsetting boundary conditions and interfaces as initialization conditions among the divided parts, wherein the divided parts of the blast furnace geometry in space comprising a furnace top, a body, a convolution area and a hearth; and carrying out simulation on the different parts of the blast furnace, and then coupling and integrating the parts into a digital system capable of describing the wholeblast furnace ironmaking process. The problems that the whole blast furnace ironmaking process is difficult to describe through a digital means and difficult to visualize are solved, and modeling ofthe blast furnace from the perspective of control is achieved.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a method for realizing a blast furnace digital system based on computer simulation. Background technique [0002] The blast furnace ironmaking process is very complicated, and there are gas (hot air, coal gas)-solid (charge)-powder (injection fuel)-liquid (slag iron) multiphase flow, mass transfer, heat transfer, and chemical phenomena accompanied by high temperature and high pressure. And other dangerous operating conditions, it is impossible to digitally describe and visualize the internal state of the blast furnace by means of experiments and measurements. Therefore, the blast furnace has long been regarded as a "black box" and relies heavily on the experience of field workers. In addition, there is a large discontinuity in the time and space scales inside the blast furnace. Therefore, the traditional computer simulation method based on a single scale (mainly...

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Problems solved by technology

[0002] The blast furnace ironmaking process is very complicated, and there are gas (hot air, coal gas)-solid (charge)-powder (injection fuel)-liquid (slag iron) multiphase flow, mass transfer, heat transfer, and chemical phenomena accompanied by high temperature and high pressure. It is impossible to digitally describe and visualize the internal state of the blast furnace by means of experiments and measurements, so the blast furnace has been regarded as a "black box" for a long time and relies heavily on the experience of on-site staff for operation

In addition, there is a large discontinuity in the time and space scales inside the blast furnace. Therefore, the traditional computer simulation method based on a single scale (mainly the computational fluid dynamics method at the macro scale and the discrete element method at the micro scale) Difficult to be universally applied to the whole blast furnace ironmaking process

The currently developed blast furnace models based on computer simulation are all built for the local blast furnace, and cannot realize the digitization and visualization of the blast furnace ironmaking process from the perspective of process control

[0003] The current patents 201610110775.3, 201910648452.3, 201710804565.9, 201710804564.4, 201210123530.6, 201710240585.8, and 201610390270.7 cannot describe the internal state of the blast furnace from the control point of view, nor can they Realize the digitization and visualization of the internal state of the entire blast furnace

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