Question
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What hydrocracking reactor catalysts are demonstrating optimal mid-distillate selectivity, better yield structures, and more efficient use of hydrogen? In combination, which of these catalyst systems seems to be the most flexible in adjusting to feed quality variations and heavy feeds such as DAO and HVGO molecules?
Mar-2023
Answers
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Peter Andreas Nymann, Topsoe, PAN@topsoe.com
Topsoe’s proprietary D-Sel series has been selected as the best catalyst for maximum mid-distillate production based on pilot plant studies carried out by third-party pilot plant test facilities. The performance seen in the tests has been confirmed in several operating hydrocrackers around the world for several cycles.
Middle distillate has lower hydrogen content than lighter fractions and a high selectivity to middle distillates, therefore significantly contributing to more effective use of hydrogen. The ability of hydrocracking catalysts to provide optimal performance can be unlocked by applying the appropriate grading/HDM catalyst selection to help prevent contamination of poisonous components present in heavy fractions such as DAO and HVGO. The high-boiling materials are more refractive than lower-boiling feedstocks. They require high-activity pretreatment catalysts based on the proprietary HyBRIM or HySwell technology, where the HDN and hydrogenation activity has been optimised for heavy molecular hydrogenation.
Mar-2023
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