Blast furnace hot blast stove burning effect on-line analysis and quantitative method
A technology of combustion effect and quantification method, applied in blast furnaces, blast furnace details, blast furnace parts and other directions, can solve the problems of difficult system maintenance, lack of unstable change rules of dome temperature, etc., and achieves reliable work, no equipment maintenance, and easy implementation. Effect
Active Publication Date: 2013-06-19
ANGANG STEEL CO LTD
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Problems solved by technology
No matter which method is crucial to the setting of the optimal air-fuel ratio, but the above method takes the vault temperature as the direct analysis parameter, and lacks the consideration of the unsteady change law of the vault temperature, and the method of the residual oxygen meter is used , the maintenance of the system is also more difficult
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[0030] The specific embodiments of the present invention will be further described below in conjunction with the drawings:
[0031] The system structure of this method is as follows figure 1 As shown, the realization of the method is mainly composed of 4 parts, which are a data preparation unit, a data extraction unit, a dynamic combustion effect analysis unit, and a stable combustion effect analysis unit. The data preparation unit is mainly responsible for online calculation, statistics and storage of field data. The data extraction unit is mainly to calculate and extract the data to be analyzed. The combustion effect analysis in the rapid combustion stage only performs dynamic combustion effect analysis. The combustion effect of the stable heat storage stage is comprehensively analyzed through the dynamic combustion effect analysis unit and the stable combustion effect analysis unit. On the one hand, the analysis results can be used for online combustion effect analysis and m...
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The invention discloses a blast furnace hot blast stove burning effect on-line analysis and quantitative method which is used for comparing burning effects at different moments of the same hot blast stove at a burning state in which gas heat value and gas flow are the same or similar. A blast furnace hot blast stove burning process is divided into a quick burning stage and a stable thermal storage stage. At the quick burning stage, the steps which determine the burning effect of the hot blast stove are that (1) burning effect analysis parameters are stored in a statistics mode; (2) burning effect analysis data is extracted; (3) optimum effect and standard effect which can be achieved at the moment are determined; (4) a dynamic burning effect distribution interval which can be achieved at the moment is determined; and (5) the dynamic burning effect at the moment and a quantized value are determined. At the stable thermal storage stage, the steps which determine the burning effect of the hot blast stove are that (6) the dynamic burning effect at the moment is determined by repeating from the step (1) to step (5); (7) a stable burning effect distribution interval at the moment is determined; (8) the stable burning effect at the moment and a quantized value are determined; and (9) the comprehensive burning effect at the moment and a quantized value are determined.
Description
Technical field [0001] The invention belongs to the technical field of analysis and detection of the combustion effect of a blast furnace hot blast stove, and particularly relates to an online analysis and quantification method for the combustion effect of a blast furnace hot blast stove. Background technique [0002] Hot blast stove is an important facility for blast furnace production, and the trend of its air temperature affects blast furnace production. Increasing the air supply temperature of hot blast stove can reduce the coke ratio and increase the output of the blast furnace, thereby saving coke and reducing costs. In order to increase the air supply temperature, it is necessary to increase the vault temperature and heat storage of the hot blast stove, and to increase the vault temperature and heat storage, it is necessary to find a suitable air-fuel ratio to facilitate the full use of blast furnace gas, accelerate heat transfer, and shorten the furnace Time, save gas con...
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Inventor 宋宝宇杨春雨王奎越杨东晓费静
Owner ANGANG STEEL CO LTD