SOxMASTER-2™
Optimal SOx reduction without rare earth for partial- and full-burn units. SOx reduction additives are designed to capture and remove the oxidized sulfur compounds present in the FCC unit regenerator and release them in the FCC riser. On release, the sulfur exits the FCC unit as hydrogen sulfide, along with the cracked products in the reactor effluent. The hydrogen sulfide is processed in the gas plant downstream of the FCC unit.
Extensive studies in the 1970s looked at the absorption of SOx by various metal oxides and concluded that catalysts based on MgO, Al2O3, MgAl2O4 (spinel), La2O3 and CeO2 were most suitable for FCC operations. The introduction of hydrotalcite (Mg6Al2OH16), which is an anionic layered clay, improved the Mg/Al ratio to 3:1 from 1:2 compared with other leading technologies. The importance of the Mg/Al ratio becomes apparent when the mechanism for capture and subsequent release of sulfur via additives is considered (Figure 1). Magnesium acts as the primary capturing medium by forming magnesium sulfate in the regenerator. Sulfur is released from the magnesium sulfate in the riser. This process effectively regenerates the particle so it may capture sulfur again in the next pass through the FCC unit.
Ketjen pioneered and patented hydrotalcite-based additives and first entered the SOx additive market in the 1980s. An estimated 70% of all SOx additives used worldwide are based on hydrotalcite. Ketjen’s hydrotalcite-based technology is the preferred option for reducing SOx emissions from FCC units because it offers the highest amounts of magnesium available on the market and, consequently, the highest reduction in SOx emissions.
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Unprecedented upgrading of residue in FCC. FCC units using conventional FCC catalysts are severely limited when diffusion constraints control conversion and bottoms upgrading, for example, in heavy-feed and/or short-contact-time operations. Even with high catalyst addition rates, bottoms conversion, ...
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The solution for FCC fluidization and circulation problems. SMOOTHFLOW from Ketjen offers a solution to FCC unit fluidization and circulation problems. Fluidization problems sometimes begin suddenly, often as the result of an unexpected process upset causing significant catalyst losses and possible mechanical ...
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Optimal SOx reduction without rare earth for partial- and full-burn units. SOx reduction additives are designed to capture and remove the oxidized sulfur compounds present in the FCC unit regenerator and release them in the FCC riser. On release, the sulfur exits the FCC unit as hydrogen sulfide, along ...
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DURASOx™ SOx reduction additive is the culmination of intensive development work focusing on obtaining the most attrition-resistant SOx additive on the market without any performance compromises. It follows in the footsteps of Ketjen’s longest-marketed SOx additive, KDSOxTM, in that both take advantage ...
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DuraZOOM™ - industry-leading olefin and octane enhancement
DuraZOOM additive is the latest in a long line of light olefins and octane enhancers manufactured by Ketjen. ZSM-5 additives were developed by Mobil Oil Corporation and first used in 1983 as octane enhancers necessitated by the phasing out of tetraethyl lead. Since then, their use has grown enormously ...
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ELIMINOx™ - flexible combustion promotion with lower NOx emissions
ELIMINOx™ is Ketjen’s most widely used non-platinum-containing combustion promoter. More than 20 refineries around the world have used it to provide excellent carbon monoxide (CO) oxidation and to control afterburn with significantly lower NOx emissions when compared with traditional platinum promoters. ...
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AMBER™ catalysts are frequently used, high-quality catalysts from the Ketjen portfolio and are manufactured using ADM-20 matrix technology, which is common to its high-accessibility catalysts. AMBER™ is the benchmark for maximum transportation fuels against which all other gas oil catalysts are measured. In ...
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Too often, profitability is lost because refiners lack adequate accessibility and bottoms cracking power in their catalyst. Ketjen has developed BCMT-500 additive, which features high accessibility and provides powerful functional bottoms conversion sites. BCMT-500 delivers many pre-cracking sites and ...
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MD FCC Catalysts - boosting middle distillates production in FCC
Maximizing middle distillates in FCC units. A range of catalysts is available from Ketjen for increasing the production of middle distillates in the FCC process while retaining the many other attractive features of this versatile bottom-of-the-barrel upgrading process. The key to success is to adjust ...
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KOC-15™ Flexible and effective way to lower afterburn in your FCC unit
KOC-15™ additive is Ketjen’s most widely used platinum-based combustion promoter, and is commercially proven to provide many refiners with a reliable, low-cost and flexible solution to afterburn and excess carbon monoxide (CO) emissions. In the regenerator, the coke (carbon) on the spent catalyst ...