Aromatization – temperature increase, no yield! I hope the experts can offer some guidance! !
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I am an aromatization unit that processes C3/C4 liquefied gas to produce light aromatics. There is a temperature rise in the first layer of the reactor, no change in the second layer, and a temperature rise in the third layer; however, the temperature before reaction is 30°C lower than that in the upper layers. The normal octane rating for light aromatic hydrocarbons is around 90, but these days it’s not even 80. I hope the experts here can help by explaining why this is the case ? ? Thank you! ! !
The temperature rise in the reactor is not clearly described, and what does it mean by saying there is no yield?
Thank you! It has been resolved; the instability of the raw materials in the initial stage caused the temperature at the furnace outlet to be too low, and the cold material prevented the reaction from continuing. By controlling the temperature increase, normal operation was restored after a few hours!
The temperature of the three layers of beds decreased significantly, and the signatory reactions weakened greatly. The reactions that occurred in the first few layers were disproportionation, isomerization, etc., with the main reaction taking place only in the last layer. We started working on this quite early on; I’m not sure which organization you work for
Thank you. We are newcomers and have just started working in the chemical industry in Xinjiang
There is one ingredient whose amount cannot be excessive; it’s quite obvious. You must have noticed this as well – Xinjiang is so far away. When we were working on this, several companies in Shandong got involved