Furnace temperature controlling method in heating process of plate blank of heating furnace

Abstract

The invention discloses a furnace temperature controlling method in a heating process of plate blank of a heating furnace. An optimal control scheme is determined by adopting an adaptive differential evolution algorithm according to the heat transfer characteristic in the heating furnace based on the constraint conditions such as heating mass requirements, production equipment safety and the like of the plate blank, so that the setting temperature of the heating furnace is obtained and temperature control in the heating process of the plant blank is realized. On the premise that the production requirement is met and the temperature of the plant blank meets the hot rolling requirement, the adaptive differential evolution algorithm is improved, and mutagenic factors and crossover probability are adaptively regulated, so that the global searching ability of the algorithm can be improved, the algorithm convergence is quickened and the searching precision of the algorithm is improved. By implementing the method, the temperature of the heating furnace is reduced, over-burning is avoided, the oxidative burning loss of the plant blank, the energy consumption, the production cost and the discharge of waste gas are reduced, and the economic benefits and the social benefits of an enterprise are improved.

Description

technical field [0001] The invention belongs to the technical field of metal material processing information, and in particular relates to a furnace temperature control method during the heating process of a heating furnace slab. Background technique [0002] Furnace temperature control in the heating process of iron and steel materials in the heating furnace is the main content of production management in metallurgical enterprises, and the control level is directly related to the quality of heating furnace slab heating and energy consumption level. [0003] In the hot rolling section of steel production, in order to ensure that the slab reaches the rolling temperature required for hot rolling, it needs to enter the heating furnace for heating before being sent to the hot rolling production line. The operation process is described as follows: the slab from continuous casting is The conveying roller table is transported to the entrance of the heating furnace, and is sent into...

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Problems solved by technology

At present, the furnace temperature setting operation process of the heating furnace is mainly completed manually, which is heavily dependent on the experience level of the operator. The furnace temperature setting process is mainly determined by combining visual inspection and table lookup, and it is impossible to achieve precise control quantitatively and accurately. ; In addition, considering that the heating furnace is usually divided into multiple furnace sections, and each furnace section has a large number of burners, manual adjustment cannot fully consider the interference between each burner, and formulate a heating furnace with a high comprehensive level, energy saving and consumption reduction Burner control scheme, therefore, it is urgent to propose a practical control scheme to optimize the scheduling of the furnace temperature, under the existing production conditions, to ensure product quality, save energy consumption, reduce exhaust gas emissions, and increase production efficiency and maximize social benefits

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