The problem with superheated steam
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Gentlemen, how is superheated steam controlled in the production of crude benzene? What are the hazards of too high a temperature? The temperature in our factory often exceeds 480°C
It’s fine as long as it doesn’t exceed 450°C; why use such a high temperature?
The temperature of the superheated steam must not be lower than 400°C; if it is below this level, steam consumption increases, the temperature of the oil and gas at the top of the regenerator drops, resulting in poor benzene removal efficiency. The temperature at the bottom of the regenerator also decreases, which leads to poor slag discharge and inferior benzene washing performance.
At high temperatures, a large amount of cooling water is required to cool the benzene vapor. Under normal circumstances, steam valves can withstand temperatures of 440 degrees; higher temperatures are not good for the valves either. The reflux ratio can be calculated; it should not exceed 205 – if it’s higher, so be it!
Reply to 4# penti: The temperature is too high, and the pipes can’t handle it; we replaced the pipes, and now the temperature is between 350 and 400