Coarsely Granulated Macroporous Adsorbent for Adsorption Cleaning of Heavy Oil Stock

Adsorption method of oil residue upgrading without hydrogen using coarsely granulated macroporous adsorbents with a high mechanical strength, a small surface area, and a large volume of macropores, modified with various additives was investigated. To create a macroporous structure, templates, namely, guar gum and wax emulsion, were tested. Both templates showed high effectiveness, but use of wax made it possible to get adsorbents with a larger pore volume. The process of adsorption-contact cleaning of stock based on cracking residue of visbreaking reduced content of heavy metals by 98 %, while conversion of residue boiling above 540 degrees C was 75 %. Adsorption-contact cleaning on large coarsely granulated adsorbent can be used to get a feedstock for hydrofining process aimed at getting a low-sulfur marine fuel and a feedstock for catalytic cracking.

Automated summary

This study investigated the adsorption method of oil residue upgrading without hydrogen using coarsely granulated macroporous adsorbents with a high mechanical strength, a small surface area, and a large volume of macropores, modified with various additives. Templates such as guar gum and wax emulsion were tested to create a macroporous structure, with wax showing greater effectiveness. The process successfully reduced heavy metal content by 98% and achieved a 75% conversion of residue boiling above 540 degrees C. This method can be used to obtain feedstock for hydrofining and catalytic cracking processes.