Decoking of Spent Catalyst from an Industrial Naphtha Reforming Plant Using Thermogravimetry Analysis

The coke combustion on the spent catalyst for naphtha reforming from an industrial plant has been studied by the thermogravimetry and differential thermogravimetry (TG-DTG) techniques. The results showed that only one type of coke existed on the catalyst surface. It has been proved that, the coke combusion occurred at 480°C for this catalyst. The comustion rtae studied for different partial pressure of oxygen in the feed to TG-DTG instrument. It was shown that the oxygen contents above 18% mol in the feed has no or little effect on the coke comustion rate.The results of this work can be used to understand the decoking process of CCR units.

Keywords:

Decoking , Naphtha Reforming , Coke Combustion.