A coke oven positive pressure oven process

Abstract

The invention relates to the technical field of coke oven ovens, in particular to a coke oven positive pressure oven process. 1) Use the maximum daily expansion rate of 0.035% to 0.05% to calculate the number of heating days and draw the coke oven heating curve; 2) Each coke oven only arranges pipes on one side, and every two burners share a set of positive pressure oven equipment, namely Only one set of positive pressure oven equipment is used for every two carbonization chambers; 3) Control the pressure of the carbonization chamber to 50-300Pa; 4) Set the air coefficient α value in different temperature ranges, and calculate the actual air coefficient through the measurement results of the online exhaust gas analysis instrument alpha 1 ; 5) Set the air coefficient α value (2~40) in different temperature intervals, so that the actual value of the air coefficient α 1 and keep within the set α range; 6) After the temperature of the coke oven reaches the required temperature, the oven process ends. It can significantly reduce the cost of oven equipment, shorten the number of days of ovens, and improve the tightness of the oven body, so as to better realize the source reduction control of coke oven pollutants and prolong the expected life of coke ovens.

Description

technical field [0001] The invention relates to the technical field of coke oven ovens, in particular to a coke oven positive pressure oven process. Background technique [0002] Coke oven baking is the operation process of raising the temperature of the coke oven from normal temperature to normal heating (or coal charging). The process is very important and complicated, and the life of the coke oven has a crucial impact. At present, the coke oven oven method can be divided into negative pressure oven and positive pressure oven. The main driving force of the air and combustion exhaust gas in the negative pressure oven comes from the suction of the chimney, and the main driving force of the coke oven positive pressure oven air and combustion exhaust gas mainly comes from the fan. The coke oven positive pressure oven can ensure that the entire furnace maintains positive pressure throughout the entire oven process. Because the process is more scientific, it is more and more re...

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Problems solved by technology

[0006] 2) The automatic control degree of the current positive pressure oven technology is relatively backward. At most, the gas volume of the oven can be automatically adjusted according to the set heating curve, but the air volume required for gas combustion cannot be automatically controlled;

[0007] 3) The current positive pressure oven process only monitors the pressure of the carbonization chamber during the oven, and does not control the pressure value of the carbonization chamber. The pressure distribution in the furnace during the oven does not match the pressure in the carbonization chamber during the actual production of the coke oven. ;

[0008] 4) The current positive pressure oven process basically continues the practice of the negative pressure oven process when setting the temperature rise curve, and generally uses the maximum daily expansion rate of 0.03 to 0.035% for calculation, so the corresponding number of days for the oven is also more

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