Intelligent combustion control method based on online optimization of air-fuel ratio and used for heating furnace

A control method and air-fuel ratio technology, applied in the direction of combustion method, combustion control, fuel supply adjustment, etc., can solve the problems of large overshoot of the heating furnace, unsatisfactory combustion conditions, optimal control parameters, etc., and achieve stable intelligent combustion control Effect

CN106322429AInactive Publication Date: 2017-01-11上海策立工程技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-01-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an intelligent combustion control method based on online optimization of the air-fuel ratio and used for a heating furnace. The intelligent combustion control method comprises the following steps that S1, the optimal air-fuel ratio is determined intelligently; S2, the optimal air-fuel ratio is adjusted automatically; S3, the air-fuel ratio is fed back and controlled automatically; and S4, the temperature PID control parameter of the heating furnace is adjusted intelligently. According to the intelligent combustion control method based on online optimization of the air-fuel ratio and used for the heating furnace, the combustion atmosphere is determined according to the rolling specification of a blank and the target temperature, and adjustment of the air-fuel ratio is conducted with the combustion atmosphere as feedforward; and meanwhile, optimal control over the air-fuel ratio is conducted with residual oxygen contents, collected by a patrolling type smoke analysis system, of combustion products of all combustion sections of the heating furnace as feedback, parameters in the combustion process are dynamically adjusted according to the changing condition of the temperature in the control process, and real-time stable intelligent combustion control over the heating furnace is achieved.
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Description

technical field

[0001] The invention relates to an intelligent combustion control system, in particular to an intelligent combustion control method for a heating furnace based on online optimization of the air-fuel ratio. Background technique

[0002] The intelligent combustion control system of the steel rolling heating furnace is one of the important links in the steel rolling production. The intelligent combustion control system can realize: improving the heating quality of the billet, accurately controlling the temperature difference and uniformity of the billet head and tail, and reducing energy consumption. The iron and steel industry is a large energy consumer, and the energy consumption of metallurgical heating furnaces accounts for 25% of the total energy consumption of steel. Improving the thermal efficiency of heating furnaces and reducing energy consumption are of great significance to the energy saving of the entire iron and steel enterprise.

[0003] The main c...

Examples

Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0033] In this embodiment, the intelligent combustion control method of the heating furnace based on online optimization of the air-fuel ratio provided by the present invention includes the following steps:

[0034] Step S1: Intelligently determine the optimal air-fuel ratio. Considering that the combustion systems of various billets may be different, and the combustion conditions may change at any time, the air-fuel ratio setting value of each segment is the result of processing under various cond...