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Combustion control method for hot rolling pulse heating furnace

A control method and pulse heating technology, applied in furnace control devices, furnace monitoring devices, lighting and heating equipment, etc.

Inactive Publication Date: 2018-11-13
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this technology optimizes the relationship between the calorific value of the gas and the pressure, it has nothing to do with the work of the pulse burner to prolong the combustion time at a low heat load

Method used

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  • Combustion control method for hot rolling pulse heating furnace
  • Combustion control method for hot rolling pulse heating furnace
  • Combustion control method for hot rolling pulse heating furnace

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Embodiment

[0169] Embodiments of the present invention are described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are provided, but the protection scope of the present invention is not limited to the following embodiments.

[0170] Taking a certain hot-rolling production line as an example, the control method of the present invention determines that when the production line pulse heating furnace produces slabs with a low target temperature for hot charging, a new fuel calorific value is set, and by using the gas pressure formula and air pressure The formulas determine the mixed gas pressure setpoint and the combustion air pressure setpoint.

[0171] When the pulse heating furnace is producing a slab with a low target temperature for hot charging, the steps to determine the new gas calorific value and the control method of the gas and air pressure form...

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Abstract

The invention discloses a combustion control method for a hot rolling pulse heating furnace, and the combustion control method is suitable for low heating loads and particularly suitable for pulse combustion during low-target-temperature and high-hot-charging-temperature slab production. On the basis of pulse combustion, for the low heating loads, low-heating-value combustion control is introduced, the gas heating value corresponding to the low loads is calculated, and the air-fuel ratio and the air-gas pipeline pressure needed for pulse combustion on the basis of gas heating value are established, the gas heating value and the air-gas pipeline pressure obtained through calculation are sent to a gas heating value adjusting mechanism and a heating furnace base combustion control mechanism,automatic pulse combustion control is achieved, and accordingly the purposes that the pulse nozzle combustion time is prolonged, the nozzle valve opening and closing frequency is reduced, and the furnace interior temperature uniformity is improved are achieved.

Description

technical field [0001] The invention belongs to the field of combustion control of metallurgical heating furnaces, and in particular relates to a combustion control method of a hot rolling pulse heating furnace. Background technique [0002] The hot rolling pulse combustion technology is a new heating combustion technology. Compared with the traditional hot rolling heating furnace, most hot rolling pulse heating furnaces adopt a flat flame burner with double cross limit control in the upper part of the soaking section. Each control area adopts pulse-controlled adjustable flame burners, which are also called pulse burners, and are all installed on the side walls. [0003] Each pulse burner is composed of air and gas systems. The air and gas pipes in front of the burner are equipped with ON / OFF automatic cut-off valves. All cut-off valves are equipped with full-open and full-close limit switches. Under normal circumstances, the burners on both sides of the furnace are used in...

Claims

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Application Information

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IPC IPC(8): F27D19/00F27D21/00
CPCF27D19/00F27D21/00F27D2019/0006F27D2019/0009F27D2019/0028F27D2021/0007
Inventor 吕立华邓龙王墨南秦建超张科杰陈永刚许娜
Owner BAOSHAN IRON & STEEL CO LTD
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