Combination of Both Hydrogen Addition and Carbon Rejection Technologies

3 Combination of Both Hydrogen Addition AND Carbon Rejection Technologies 

Ebullated-bed + deasphalting. H-Oil unconverted bottoms are sent to the SDA unit and separated into a DAO stream and a residual asphalt product. The DAO can either be recycled back to the H-Oil reactor for further conversion and/ or combined with the H-Oil-derived distillates for hydrotreating. The main advantages of this process scheme are the following (Kressmann et al., 1998)  

Modeling of Processes and Reactors for Upgrading of Heavy Petroleum 

FIGURE 2.10 Possible process combination of various upgrading technologies. 

Ancheyta, J., Betancourt, G., Marroquin, G., Centeno, G., Munoz, J.A., Alonso, F. 2010a. Process for the catalytic hydrotreatment of heavy hydrocarbons of petroleum. US Patent 7651204 B2. 

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