Method of negating the effects of metals poisoning on cracking catalysts
Immobilization of vanadia deposited on catalytic materials during carbo-metallic oil conversion
ApplicationNo. 10308737 filed on 12/03/2002
US Classes:208/113, Catalytic208/120.2, With group V metal or metal oxide (i.e., V, Nb, Ta, As, Sb, Bi, or oxide thereof)208/120.25, With group II metal or metal oxide (i.e., alkaline earth metal, Be, Mg, Zn, Cd, Hg, or oxide thereof)208/120.35, With group VIII metal or metal oxide (i.e., iron or platinum group metal, or oxide thereof)208/208R, Sulfur removal (free or combined sulfur)208/120.01, With group III metal, rare earth metal, or metal oxide (i.e., Sc, Y, Al, Ga, In, Tl, metal of atomic number 57-71 or oxide thereof)208/244, With Group VIII metal or compound208/245, With silicon or compound thereof208/247, With Group IIB metal or compound208/248, With Group III metal or compound208/249, With Group IV, V, VII metal or compound208/243, With Group VI metal or compound208/420, Dissolved or suspended-thermally-decomposable catalyst, component or precursor502/62, Including organic component502/65, And rare earth metal (Sc, Y or Lanthanide)containing502/208, Phosphorus or compound containing same266/271, MEANS SEALING OR OPENING APERTURE IN VESSEL423/306, Plural metal or metal and ammonium containing502/214, And silicon containing423/230, Utilizing solid sorbent, catalyst, or reactant502/64, Zeolite208/119, With metal or metal oxide502/63, And additional AL or Si containing component502/68, Mixed with clay423/277, Oxygen containing423/718, Structure defined X-ray diffraction pattern502/41, In gaseous suspension (e.g., fluidized bed, etc.)502/61, Gallium containing208/227, Plural stages of sulfur removal208/122, Group III metal or oxide423/700, ZEOLITE585/722, Aluminosilicate or organometallic208/299With solid catalyst or absorbent
ExaminersPrimary: Griffin, Walter D.
Assistant: Arnold, James Jr.
Attorney, Agent or Firm
Foreign Patent References
AbstractThe sulfur content of liquid cracking products, especially the cracked gasoline, of the catalytic cracking process is reduced by the use of a sulfur reduction catalyst composition comprising a porous molecular sieve which contains a metal in an oxidation state above zero within the interior of the pore structure of the sieve as well as a cerium component which enhances the stability and sulfur reduction activity of the catalyst. The molecular sieve is normally a faujasite such as USY. The primary sulfur reduction component is normally a metal of Period 3 of the Periodic Table, preferably vanadium. The sulfur reduction catalyst may be used in the form of a separate particle additive or as a component of an integrated cracking/sulfur reduction catalyst.
Field of SearchSulfur removal (free or combined sulfur)
With Group III metal or compound
With Group IV, V, VII metal or compound
With group III metal, rare earth metal, or metal oxide (i.e., Sc, Y, Al, Ga, In, Tl, metal of atomic number 57-71 or oxide thereof)
With group V metal or metal oxide (i.e., V, Nb, Ta, As, Sb, Bi, or oxide thereof)
With group II metal or metal oxide (i.e., alkaline earth metal, Be, Mg, Zn, Cd, Hg, or oxide thereof)
With group VIII metal or metal oxide (i.e., iron or platinum group metal, or oxide thereof)
With Group VIII metal or compound
With silicon or compound thereof
With Group IIB metal or compound