Please tell me about exhaust gas circulation
Thread Content
Most coke ovens have exhaust gas circulation. I would like to ask you friends, what is the relationship between exhaust gas circulation and who has the specific value and calculation formula of the exhaust gas circulation amount.
The purpose of exhaust gas circulation is to improve the high-direction heating of the coke oven and extend the combustion flame.
I want to know the correlation formula between exhaust gas circulation and coke oven heating parameters
The amount of exhaust gas recirculation is difficult to calculate and cannot be measured. Therefore, there is no correlation between it and the heating parameters.
How to control the exhaust gas circulation volume directly affects coke oven heating, so the correlation between the exhaust gas circulation volume and the coke oven heating parameters is very important.
You can do an exhaust gas analysis first, and then control the air volume based on the exhaust gas analysis.
The driving force of exhaust gas circulation depends on the effective injection force of air and gas and the buoyancy difference between the rising and falling fire channels.
Everyone is right, but I would like to know more about the correlation between exhaust gas circulation and coke oven heating parameters.
The amount of exhaust gas circulation is only an empirical value and cannot be measured and calculated. So there is no correlation~~
Take a closer look at "Coking Production Technology", which explains very clearly the principles and calculations of exhaust gas circulation. Generally, the exhaust gas circulation volume is about 37% of the exhaust gas volume. The exhaust gas circulation can realize its own automatic adjustment according to the coke oven production conditions.
At present, there seems to be no numerical correlation formula, and it is all adjusted by experience. And if there is a correlation, it may not be controllable.
There may really be no correlation formula between exhaust gas circulation and coke oven heating parameters, but friends, please qualitatively analyze how the exhaust gas circulation volume changes when the coke oven heating parameters change.
The amount of exhaust gas circulation depends on the resistance that can be overcome. The resistance mainly comes from crossing holes and circulation holes. The increased resistance reduces the amount of exhaust gas circulation. In the coking process, there is a formula for calculating the exhaust gas circulation amount with a jet force utilization coefficient of 0.75. :handshake
Thank you all for your participation and I look forward to more in-depth discussions with more experts.