Thermal calculation of waste heat boilers
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I am currently working on a problem that involves thermal calculations! I’ve really run into a tough problem! I’m reaching out to the experts here for help: The question is as follows: How much water is required in an oxygen top-blown converter to cool the flue gas to a certain temperature, in order to prevent the tubes from bursting? At present, I have already calculated the enthalpy of the flue gas at various stages of the converter, the flow rate of the flue gas, and the volume of furnace gas; all that remains is to determine how much water is needed to bring the temperature down to the desired level! Since I had no prior experience with this kind of calculation, I was a bit flustered and didn’t dare to use standards arbitrarily. Could anyone who is familiar with this topic offer some guidance? Thank you first!
Could you be more detailed? Which gas needs to be cooled? From how many degrees to how many degrees? The components of these gases, etc. What temperature of water should be used? Only with these can the water volume be determined
Reply to 2# melody99: The gas in question is the furnace gas used in steel manufacturing, with 86% CO, 10% CO2, and 2% N2. It is necessary to reduce the temperature of this furnace gas to 850°C. Do you have any calculation examples or reference materials on this topic?
Reply to 3# afanniea: You didn’t mention the temperature before smoke treatment
Reply to 4# ssun*nhong: The inlet gas temperature is around 2000°C. Communication on the forum is rather slow; please add me on QQ if you see this message: 376923864
Reply to 3# afanniea: The gas in question is the furnace gas used in steelmaking, with 86% CO, 10% CO2, and 2% N2. To reduce the temperature of this furnace gas to 850°C, do you have any calculation examples or reference materials available on this topic? The inlet smoke temperature of the flue hood is approximately 2000°C.
Finally, there is the determination of the K value. What is the structure of the tube bundle?