Evaluation method and system for burden distribution situation of blast furnace

Abstract

The invention provides an evaluation method and system for the burden distribution situation of a blast furnace. The evaluation method comprises the steps of acquiring an actuating signal of a burdendistribution device and current furnace burden information, and determining to enter a burden distribution stage; acquiring furnace condition characterization parameters in the burden distribution stage to obtain the actual change situation of the furnace condition characterization parameters; comparing the actual change situation with a theoretical change situation according to a Cartesian product of furnace burden types, the furnace condition characterization parameters and the theoretical change situation which are obtained in advance, wherein the theoretical change situation comprises a standard burden distribution theoretical change situation and at least one abnormal burden distribution theoretical change situation of an abnormal type; and judging the current burden distribution situation according to the comparison result between the actual change situation and the theoretical change situation. According to the evaluation method, the furnace throat temperature and the supply airpressure and the like are associated with burden distribution accurately and effectively; compared with other methods depending on experience, the evaluation method has the advantages that reasons are speculated based on many factors, and the reliability of evaluation results is improved, and the guiding significance in regulation of a blast furnace burden distribution system is improved.

Description

technical field [0001] The invention belongs to the technical field of smelting blast furnace control, and relates to a blast furnace material distribution status evaluation method and an evaluation system. Background technique [0002] Blast furnace distribution usually refers to the process of distributing coke and ore and other furnace materials from the material tank into the high-temperature and high-pressure furnace body in a certain way. Usually, the blast furnace material distribution is carried out successively at intervals. Specifically, the distribution of coke and ore is taken as an example: first, the ore is poured into the material tank through the feeding device, and the material flow valve at the lower end of the material tank is opened with a preset opening, so that The ore flows out of the material tank and falls on the inclined chute, and then slides down along the chute to the material surface in the furnace to realize the ore distribution; next, the mate...

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Problems solved by technology

[0006] In order to solve the technical problem in the prior art that the evaluation of the distribution status of the blast furnace depends too much on its own experience, resulting in poor reliability, the purpose of the present invention is to provide a blast furnace distribution status evaluation method and evaluation system

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