Heating furnace process furnace temperature control method based on thermal load distribution

Abstract

The invention provides a heating furnace process furnace temperature control method based on thermal load distribution, and relates to control equipment or method specially suitable for a metal rolling mill and processed products thereof. The method comprises the following steps: S100, identifying typical products in a control section according to the comprehensive weight; S200, determining a process furnace temperature set value of the control section according to the production rhythm of the heating furnace; S300, tracking the temperature of the products in the furnace in real time, predicting the furnace discharge predicted temperature of the typical products, and determining product temperature deviations; S400, establishing a thermal load equalizing regulation model, and determining the product temperature deviations corresponding to the control section; and S500, converting the product temperature deviations into process furnace temperature corrected values, and determining the set furnace temperature, thereby realizing the furnace temperature control of the heating furnace corresponding to the control section. By establishing the thermal load equalizing regulation model to distribute the temperature deviations to the control section of the typical products and performing compensation correction on the process furnace temperature for combustion of the heating furnace, the control accuracy of the process furnace temperature is improved, the heating quality of the products is improved, and energy wastes are reduced.

Description

technical field [0001] The invention relates to a control device or method specially suitable for a metal rolling mill or its processed products, and in particular to a control method for compensating and correcting the furnace temperature setting value of a heating furnace based on heat load distribution. Background technique [0002] Metallurgical heating furnaces generally consist of a heat recovery section that does not supply heat and multiple combustion control sections that supply heat. The combustion control of the heating furnace can be divided into two levels. The first is the furnace temperature control that characterizes the heating process, and the second is the gas flow adjustment. . The combustion control of the heating furnace must not only meet the requirements of product heating quality, but also pursue energy saving. In the actual production process, optimal combustion control is often difficult to achieve. The reason is that, on the one hand, the produc...

AI Technical Summary

Problems solved by technology

The combustion state of the heating furnace is different with different gas. After the gas changes, the heat load state in the heating furnace will fluctuate, so that the equipment is not always in the best operating state; in addition, the product quality is also easily affected after the production state changes.

However, it can be seen from the above patent documents that most of the existing automatic furnace temperature control systems simply consider the temperature requirements of the product, and do not consider the production characteristics of the product and the state of the heating furnace equipment, nor combine the actual combustion load state of the product Realize optimal adjustment of furnace temperature

Due to the constantly changing steel types and the production rhythm of the heating furnace, the existing system is completely adjusted according to the preset process furnace temperature, and some products are prone to problems such as local cracks and over-burning

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