Temperature control method for pulse-type slab heating furnace

Abstract

The invention relates to a temperature control method for a pulse-type slab heating furnace. A pulse-type slab heating furnace and a heating furnace burner groups thereof are included. The heating furnace burner groups are arranged in pairs on two sides; the burner group on each side is divided into an upper group and a lower group. The method is as below: selecting representative burners in a heat supply segment of the heating furnace burner group; setting the temperature of the representative burners; directly using the temperature set in the heat supply segment of the heating furnace as the set temperature of representative burners; then setting the temperature of other burners in the heat supply segment of the heating furnace burner group; and finally detecting the actual temperature of other burners in the heat supply segment of the heating furnace burner group. The temperature control method of the pulse-type slab heating furnace can improve the temperature control of the head and tail of the temperature control middle segment of the pulse-type slab heating furnace burner group to realize stability and controllability. The method can reduce uneven atmosphere temperature distribution in the furnace, rationally allocate the load of burners, greatly save the energy consumption and increase productivity.

Description

technical field [0001] The invention relates to the field of temperature control setting, in particular to a method for controlling the temperature of a heating furnace in hot rolling production. By selecting the correct temperature setting method, the temperature control of the heating section of the heating furnace burner group can be improved. The control effect of the pulse type slab heating furnace. Background technique [0002] At present, the slab heating furnaces used in the hot rolling production of various iron and steel production enterprises all adopt the traditional combustion control method controlled by flow rate, and the burners of the widely used pulse type slab heating furnace work at rated power Combustion, by changing the number of input burners and working time to meet the heat demand in different situations, the pulse slab heating furnace has changed the method of continuous feeding and adjustment of fuel and air in the traditional combustion control me...

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Problems solved by technology

[0011] In order to solve the problem of burning of the pulse type slab heating furnace in the prior art due to the large variety of rolling products and large temperature jumps in the actual production process, the temperature setting values ​​of adjacent sections often have large differences. The combustion load of adjacent burners in the heating section of the nozzle group is very different, resulting in the temperature at the end of the slab section in this section being lower than the set value, but there are still some burners in the section that are not burning, or the slab section in this section The final temperature is higher than the set value, but there are still individual burners burning at full load in the section, which to a certain extent causes the problems of furnace temperature control disorder and uneven temperature distribution in the furnace. The invention provides a pulse type slab heating Furnace temperature control method, through this method, the method of controlling the heating section of the heating furnace burner group in the temperature control of the pulse type slab heating furnace is improved. By selecting a suitable heating section of the heating furnace burner group Representing the burner and calculating the temperature setting value of the remaining burners makes the temperature control more stable and the atmosphere in the furnace more stable

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