Process for removing sulfur oxides from a gas
June 6, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3835031 Catalytic cracking with reduced emission of noxious gases Sulfur transfer process in catalytic cracking Process and sorbent system for removing nitrogen and other oxides from gas streams Catalyst and process for conversion of hydrocarbons Catalyst and process for conversion of hydrocarbons Preparative process for alkaline earth metal, aluminum-containing spinels and their use for reducing the sulfur oxide content of gases Preparative process for alkaline earth metal, aluminum-containing spinels and their use for reducing sulfur oxide content in gases Catalyst for conversion of hydrocarbons Catalyst for conversion of hydrocarbons Patent #: 4495305 InventorsAssigneeApplicationNo. 06/536247 filed on 09/27/1983US Classes:423/244.04, Aluminosilicate support208/113, Catalytic208/120.01, 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)208/120.25, With group II metal or metal oxide (i.e., alkaline earth metal, Be, Mg, Zn, Cd, Hg, or oxide thereof)423/244.02Reactant or catalyst on supportExaminersPrimary: Heller, Gregory A.Attorney, Agent or FirmInternational ClassesB01J 20/04 (20060101)B01D 53/50 (20060101) AbstractSulfur oxides are removed from a gas by an absorbent which comprises an inorganic oxide composition in association with at least one free or combined rare earth metal selected from the group consisting of lanthanum, cerium, praseodymium, samarium and dysprosium, wherein said inorganic oxide composition is selected from the group consisting of MgAl2 O4, mixtures of alumina with magnesium oxide and mixtures of magnesium oxide with MgAl2 O4. The absorbent can be circulated through a fluidized catalytic cracking process together with hydrocarbon cracking catalyst to reduce sulfur oxide emissions from the regeneration zone. |
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