C8 Aromatics Isomerization Technology (C8AIT)

1. Operating flexibility
The catalysts used in C8AIT are suitable for the severe conditions such as high WHSV, low hydrogen to hydrocarbon mole ratio, and high EB content in feed, etc, and offer high xylenes isomerization activity, high selectivity and excellent stability. By adopting C8AIT in an aromatics complex, it will be easy to achieve high xylene product yield and low operating energy consumption.
2. Process Flexibility
C8AIT can be used to increase the production of PX, or to increase the production of MX and OX, or to achieve co-produce benzene production with utilizing AIDT catalyst. The utilization of aromatics source and product distribution can be optimized by using different type of catalyst as necessary.
- Low Energy Consumption
- High EB conversion to guarantee low EB flow rate inside the PX loop
- Low C8 non-aromatics flow rate inside the PX loop

- High PX concentration and PX/EB ratio to enhance the capacity of the adsorption unit and decrease energy consumption
- Low hydrogen to hydrocarbon ratio to make low energy consumption of the compressor of isomerization unit
3. Feed Adaptibility
C8AIT can process fresh C8 aromatics feedstock with wide range of EB content: AIDT can be used for all kinds of feedstock, while AIIT is more suitable for those with 8%-18% EB content.