FCC Pretreat Catalysts

CENTERA GT DN-3655, a step-out Type II nickel-molybdenum catalyst for FCC feed pretreatment (FCC-PT). Compared to previous generations, CEN-TERA GT DN-3655 provides significant nitrogen removal (HDN) and sulfur removal (HDS) improvements. It is especially well-suited for high-quality FCC feed production in moderate to high-pressure units processing difficult feeds, where nitrogen removal and hydrogenation reactions are valued to improve FCC conversion levels.

CENTERA GT DN-3655 enhances HDS and HDN performance and stability across a broad range of scenarios, particularly in high severity applications that require maximum activity to overcome unit limitations. Applications where DN-3655 is particularly well-suited include:

• Units where high hydrogenation activity can be utilised to increase nitrogen removal and aromatics saturation to produce high-quality FCC feed and enable increased conversion levels
• Operations that process or want to process feeds having high nitrogen content, high percentages of cracked feed, or high endpoint
• Debottlenecking existing operations, particularly if trying to process higher rates, process more difficult crude oils  or decrease overall feed quality.
• Applications where it is advantageous to combine CoMo with NiMo catalyst to improve HDS performance to meet Tier 3 sulfur regulations while maintaining or increasing HDN and HDA performance levels

CENTERA GT DC-2655 is a new Type II Co-Mo with Ni promoter catalysts for FCC-PT service providing step-out gains in performance from previous generations. Enhances FCC Pretreat performance and stability across a broad range of scenarios, particularly in applications that require very high activity to overcome unit limitations. Applications where DC-2655 is particularly well suited:

• In low-moderate pressure units where a poor-quality hydrogenation environment leads to high SOR operating temperatures and subsequently short cycle lengths
• In units that operate at low-to-moderate pressures, especially when hydrogen supply is limited, and hydrogen optimisation is critical
• Where it is desirable to debottleneck existing operations, extend run length, expand feed capacity, upgrade more difficult feed-stocks, or decrease overall feed quality
• In moderate pressure applications where, when it is advantageous to combine a CoMo with a NiMo catalyst to enhance the overall HDS performance while controlling hydrogen consumption, DC-2650 is ideal for balancing consumption while providing activity benefit.

CENTERA™ GT DC-2656 is a new Type II Co-Mo with Ni promoter catalysts for FCC-PT service providing step-out gains in performance from previous generations. Provides the deep desulfurisation required to meet clean fuel requirements and flexibility to process heavier feeds, maximise ULSD cut points, and extend unit cycle length. DC-2656 is especially suited for high-quality FCC feed production in moderate-to-high pressure units where desulfurisation (HDS), denitrification (HDN), and hydrogenation reactions improve FCC conversion and reduce sulfur related operational constraints. Either by itself or combined with a customised catalyst system, DC-2656 generates balanced performance and superior FCC feed quality across a broad range of high severity scenarios requiring maximum activity. Applications where DC-2656 is particularly well-suited include:

• Producing high-quality FCC feed for lower sulfur products, increased FCC conversion, and reduced regenerator SO₂ emissions;
• Processing feeds having high nitrogen, high percentage of cracked feed, or high endpoint;
• Debottlenecking existing operations to enable higher feed rates, processing of more difficult crudes, or overcoming the challenges created by an overall decrease in feed quality;
• Leveraging the advantages of combining CoMo with NiMo catalyst at moderate pressure to increase HDS performance while enhancing the overall FCC performance.