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Control method of pulse heating furnace

A technology of pulse heating and control method, which is applied in the direction of furnace control devices, lighting and heating equipment, furnaces, etc., can solve the problems of messy furnace temperature setting, large deviation of furnace temperature setting, abnormal fluctuation of furnace temperature, etc., and achieve long-term The effect of stable use

Active Publication Date: 2010-12-29
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology

[0011] It can be seen from Table 2 that the furnace temperature setting was messy when the failure occurred, and some of the set values ​​had reached the upper and lower limits of the normal production furnace temperature safety range of 600-1360 °C set by the instrument DCS, resulting in abnormal fluctuations in the actual furnace temperature and interruption of normal production. There is a great safety and quality hidden danger if the temperature setting deviation is large

Method used

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  • Control method of pulse heating furnace
  • Control method of pulse heating furnace
  • Control method of pulse heating furnace

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Embodiment

[0033] The No. 3 heating furnace of the 2050 Hot Rolling Plant of Baosteel Branch is adopted, and the steel in the furnace is ordinary carbon steel. The number and capacity of each independent pulse control section of No. 3 furnace are shown in Table 3 (where A represents the rolling line side and B represents the slab side):

[0034] Table 3 The burner capacity configuration of each pulse control section of the heating furnace in the embodiment

[0035]

[0036] Step 1. Divide virtual segments

[0037] According to Table 3 and the actual situation, divide the virtual section into the upper section of the first heating section, the lower section of the first heating section, the upper section of the second heating section, the lower section of the second heating section, the upper section of the soaking section, and the soaking section. There are 6 sections in the lower section, as shown in Table 4:

[0038] Table 4 The division of virtual segments in the embodiment

[0039]

[0040] ...

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Abstract

The invention provides a control method of a pulse heating furnace, which is characterized by comprising the following steps: (1) dividing a pulse nozzle into a plurality of virtual sections according to capacity, quantity and practical furnace length of each pulse nozzle of the pulse heating furnace; (2) setting furnace temperature of each virtual section; (3) detecting practical furnace temperature of each virtual section; and (4) controlling on / off time of the pulse nozzle according to the deviation of the practical temperature value and the set furnace temperature value in each virtual section. The method of the invention can improve the stability of pulse-consumption control, reduce operation load of an operator, effectively promote the flexibility and the precision of controlling the furnace temperature for the pulse heating furnace and at the same time ensure the energy-saving effect of a pulse-consumption technology.

Description

Technical field [0001] The present invention relates to industrial heating. Specifically, the present invention relates to a control method of a pulse heating furnace. Background technique [0002] The traditional sectioned heating furnace is a section of the physical structure. Once the furnace is built, the corresponding section length cannot be changed. Many burners in each section share a gas flow control valve and an air flow control valve. The furnace temperature is controlled by the process machine. After the furnace temperature is set, the instrument performs air / gas dual cross-limiting control, and the furnace temperature detection is performed by a temperature point in the section without other detection points as the preferred option. [0003] The heating furnace using pulse combustion technology is not physically segmented. Each burner has an independent flow, pressure detection point and open / valve, so that each burner can be controlled. For heating furnaces using pul...

Claims

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Application Information

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IPC IPC(8): F27D19/00
Inventor 秦建超黄夏兰唐卫东幸利军
Owner BAOSHAN IRON & STEEL CO LTD
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