HPNA RMTM process
We provide specialized grades of granulated activated carbon (GAC) designed to remove Heavy Poly Nucleic Aromatics (HPNA) from hydrocracker feedstock in the Universal Oil Products (UOP LLC) HPNA RMTM process.
During the hydrocracking process, heavy polynuclear aromatics (HPNAs) are formed in the reactors due to the condensation of aromatics and the dehydrogenation of polynaphthenes. Once formed, HPNAs are difficult to remove and can accumulate, causing severe fouling of heat exchangers and catalyst deactivation. These compounds are resistant to conversion in the hydrocracking reaction zone and can significantly impair production quality. Our activated carbon products offer an effective solution for removing these problematic components.
The HPNAs are adsorbed onto the activated carbon, which enhances the life of the downstream hydrocracker catalyst and prevents fouling of feed effluent heat exchangers by these polycyclic aromatics (PCAs).
An extra benefit is that the GAC acts as a deep bed filter, removing suspended solids thus reducing the risk of pressure drop problems in the hydrocracker reactor.
Granular Activated Carbon
for HPNA Filtration
The granular activated carbon is contained in two filter vessels arranged in series. The vessels are typically operated in series in a lead-lag position however they can be operated in isolation to allow change out of the carbon while still protecting the catalyst.
