A process for regenerating catalyst from an MTO process is disclosed. The process comprises providing an oxygen stream and a preheated carbon dioxide recycle stream and mixing the oxygen stream and the preheated carbon dioxide recycle stream to provide a carbon dioxide rich oxidation stream. The carbon dioxide rich oxidation stream is passed to a regenerator unit to provide a carbon dioxide rich flue gas stream. The carbon dioxide rich flue gas stream is filtered to remove the catalyst fines to produce a filtered flue gas stream. A carbon dioxide recycle stream is taken from the filtered flue gas stream.

A process for regenerating catalyst from an MTO process is disclosed. The process comprises providing an oxygen stream and a preheated carbon dioxide recycle stream and mixing the oxygen stream and the preheated carbon dioxide recycle stream to provide a carbon dioxide rich oxidation stream. The carbon dioxide rich oxidation stream is passed to a regenerator unit to provide a carbon dioxide rich flue gas stream. The carbon dioxide rich flue gas stream is filtered to remove the catalyst fines to produce a filtered flue gas stream. A carbon dioxide recycle stream is taken from the filtered flue gas stream.

Present invention relates to a novel process for upgrading a residual hydrocarbon oil feedstock having a significant amount of Conradson Carbon Residue (concarbon), metals, especially vanadium and nickel, asphaltenes, sulfur impurities and nitrogen to a lighter more valuable hydrocarbon products by reducing or minimizing coke formation and by injecting fine droplets of oil soluble organo-metallic compounds at multiple elevations of the riser with varying dosing rates.

Present invention relates to a novel process for upgrading a residual hydrocarbon oil feedstock having a significant amount of Conradson Carbon Residue (concarbon), metals, especially vanadium and nickel, asphaltenes, sulfur impurities and nitrogen to a lighter more valuable hydrocarbon products by reducing or minimizing coke formation and by injecting fine droplets of oil soluble organo-metallic compounds at multiple elevations of the riser with varying dosing rates.

The present disclosure provides a method for regenerating an acid condensation catalyst including reacting a fouled acid condensation catalyst in an acid condensation (AC) reactor with a regeneration feed gas comprising oxygen (O.sub.2) at a regeneration temperature to produce a regenerated acid condensation catalyst and an effluent gas comprising carbon dioxide (CO.sub.2). The method further includes fractionating the effluent gas into a liquid phase containing water and a vapor phase, (iii) mixing at least a portion of the vapor phase with O.sub.2, CO.sub.2, air, or a combination thereof to form the regeneration feed gas; and (iv) introducing the regeneration feed gas to the AC reactor to continue the reaction of step (i).

The present disclosure provides a method for regenerating an acid condensation catalyst including reacting a fouled acid condensation catalyst in an acid condensation (AC) reactor with a regeneration feed gas comprising oxygen (O.sub.2) at a regeneration temperature to produce a regenerated acid condensation catalyst and an effluent gas comprising carbon dioxide (CO.sub.2). The method further includes fractionating the effluent gas into a liquid phase containing water and a vapor phase, (iii) mixing at least a portion of the vapor phase with O.sub.2, CO.sub.2, air, or a combination thereof to form the regeneration feed gas; and (iv) introducing the regeneration feed gas to the AC reactor to continue the reaction of step (i).

Described herein are methods for producing an aryl ester or vinyl ester, the method comprising reacting an aromatic compound or an alkene with CuX.sub.2, wherein X is a carboxylate group having the formula RC(O)O, wherein R is an alkyl group. The methods described herein provide an efficient method for esterifying aromatic compounds and alkenes to produce aryl and vinyl ester that subsequently can be converted to other useful industrial compounds including, but not limited to, alcohols. Also described herein are methods for recycling CuX.sub.2 for further reactions thus rendering CuX.sub.2 as a net catalyst.

Described herein are methods for producing an aryl ester or vinyl ester, the method comprising reacting an aromatic compound or an alkene with CuX.sub.2, wherein X is a carboxylate group having the formula RC(O)O, wherein R is an alkyl group. The methods described herein provide an efficient method for esterifying aromatic compounds and alkenes to produce aryl and vinyl ester that subsequently can be converted to other useful industrial compounds including, but not limited to, alcohols. Also described herein are methods for recycling CuX.sub.2 for further reactions thus rendering CuX.sub.2 as a net catalyst.