Process for purifying a gas containing hydrogen sulfide and contact masses usable therefor
Patent 4088736 Issued on May 9, 1978. Estimated Expiration Date: 
May 9, 1995. 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.
May 9, 1995. 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 2037789 2037790 2442982 3441370 Fluids purification Patent #: 3943226 InventorsApplicationNo. 641352 filed on 12/16/1975US Classes:423/230, Utilizing solid sorbent, catalyst, or reactant252/192, Alkali-metal or alkali-metal compound containing423/244.07, Alkali or alkaline earth or compound reactant423/539, Sulfur dioxide423/574.1, With sulfur dioxide502/38, Treating with free oxygen containing gas502/84, And metal, metal oxide, or metal hydroxide502/406, Having specifically intended extraneously added iron group (i.e., Fe, Co, Ni) component502/411Having extraneously added alkali metal, or alkaline earth metalExaminersPrimary: Thomas, Earl C.Attorney, Agent or FirmForeign Patent References
International ClassB01D 053/34Foreign Application Priority Data1974-12-27 FRAbstractA process for purifying a hydrogen sulfide containing gas, which comprises absorbing said hydrogen sulfide onto a mass comprising zinc oxide, alumina and a group II A metal oxide, a large proportion of the group II A metal oxide being in the form of aluminate or silicoaluminate; then regenerating the mass by passing an oxygen containing gas therethrough. |
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