Alkylation
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In alkylation reactions, too low an acid concentration can lead to acid runoff. In running circles, is it because the acid concentration is low, resulting in more side effects? The high consumption of acid causes the acid concentration to drop rapidly.
It doesn’t make sense; acid loss can be divided into physical acid loss and chemical acid loss, with physical acid loss referring merely to the loss of acid that occurs outside the reactor and the acid sedimentation tank
I’m sorry; as I was writing, I remembered something. I apologize for what I said earlier. You’re right – when there are many contaminants in the raw materials, or when the alkene-to-olefin ratio is unbalanced, and meanwhile the temperature drops while feeding continues…
You are referring to one of them; chemical acid consumption is mainly due to the high amount of contaminants in the raw materials, which leads to significant acid usage during the reaction. Secondly, poor control of the reaction conditions also results in substantial acid consumption. The second type is physical acidification, which is mainly caused by the acid hydrocarbons resulting from the reaction not being properly separated and being carried along with the other hydrocarbons from the reaction products into subsequent systems. Regardless of the type of acidosis, it must be addressed promptly to avoid accidents.
There are several main factors contributing to acidification: impurities in the raw materials – the light components in these materials can be separated later on; the key factor is the content of butadiene. (The specific acid consumption is detailed in the material I shared; you can refer to it.) Physical acid consumption is mainly related to factors such as acid concentration, degree of emulsification, acid-to-hydrocarbon ratio, and reaction temperature.