PROCESS FOR THE PREPARATION OF HYDROGENATED HYDROCARBON COMPOUNDS

A process for the dehydrogenation of a paraffinic hydrocarbon compound, such as an alkane or alkylaromatic hydrocarbon compound to produce an unsaturated hydrocarbon compound, such as an olefin or vinyl aromatic compound or mixture thereof, in which a dehydrogenation catalyst contacts gaseous reactant hydrocarbons in a reactor at dehydrogenation conditions. 120.-. (canceled)21. A process for dehydrogenating a hydrocarbon selected from at least one of:i) paraffinic hydrocarbons selected from ethane, propane, and butane; andii) alkylaromatic hydrocarbons selected from ethylbenzene, propylbenzene and methylethylbenzene; comprisingcontacting a gaseous stream containing at least one of the hydrocarbons with a dehydrogenation catalyst comprising gallium and platinum and carried by an alumina or alumina silica support, at reaction temperature and in concurrent rising flow, at a catalyst to hydrocarbon ratio of 5 to 100 on a weight to weight basis, to a dehydrogenation reactor wherein the average contact time between the hydrocarbon and catalyst within the dehydrogenation reactor is from about 1 to about 4 seconds; and the temperature and pressure in the dehydrogenation reactor is from about 570 to about 750° C., and from about 6.0 to about 44.7 psia; andtransferring the hydrocarbon and catalyst from the dehydrogenation reactor to a separation device wherein the average contact time between the hydrocarbon and catalyst while at reaction temperature in the separation device is less than about 5 seconds and the total average contact time between the hydrocarbon, catalyst and resulting hydrocarbons while at reaction temperature is less than about 10 seconds; andtransferring catalyst from the separation device to a regenerator where the catalyst is contacted with an oxygen-containing regeneration fluid and supplemental fuel.22. The process of wherein the catalyst comprises an alkali or alkaline earth metal selected from at least one of: sodium claim 21 , lithium claim 21 , ...

PROCESS FOR THE PREPARATION OF HYDROGENATED HYDROCARBON COMPOUNDS

A process for the dehydrogenation of a paraffinic hydrocarbon compound, such as an alkane or alkylaromatic hydrocarbon compound to produce an unsaturated hydrocarbon compound, such as an olefin or vinyl aromatic compound or mixture thereof, in which a dehydrogenation catalyst contacts gaseous reactant hydrocarbons in a reactor at dehydrogenation conditions. 127.-. (canceled)28. A process for dehydrogenating a hydrocarbon selected from at least one of:i) paraffinic hydrocarbons selected from ethane, propane, and butane; andii) alkylaromatic hydrocarbons selected from ethylbenzene, propylbenzene and methylethylbenzene; comprisingcontacting a gaseous stream containing at least one of the hydrocarbons with a dehydrogenation catalyst comprising gallium and platinum and carried by an alumina or alumina silica support, at reaction temperature and in concurrent rising flow, at a catalyst to hydrocarbon ratio of 5 to 100 on a weight to weight basis, to a dehydrogenation reactor wherein the average contact time between the hydrocarbon and catalyst within the dehydrogenation reactor is from about 1 to about 8 seconds; and the temperature and pressure in the dehydrogenation reactor is from about 500 to about 800° C., and from about 14.7 to about 44.7 psia;transferring the hydrocarbon and catalyst from the dehydrogenation reactor to a solid-gas separation device; andtransferring catalyst from the solid-gas separation device to a regenerator where the catalyst is contacted with combustion air and supplemental fuel.29. A process of wherein the dehydrogenation reactor is a riser reactor.30. The process of wherein the catalyst comprises an alkali or alkaline earth metal. 1) Field of the InventionThis invention generally relates to the field of hydrocarbon conversion and particularly to the dehydrogenation of paraffinic hydrocarbons to olefinic hydrocarbons, and/or lower alkylaromatic hydrocarbons to vinyl aromatic hydrocarbons. In several preferred embodiments, the invention relates ...

Petrochemical Processes

Petrochemical processes, including reforming processes are described herein. The reforming processes generally include introducing an input stream to a reforming unit having a reforming catalyst disposed therein, wherein the input stream includes a naphtha having an N+2A value of from about 65 to about 85 and contacting the input stream with the reforming catalyst and hydrogen to form an output stream. 120-. (canceled)21. A petrochemical process comprising:introducing a first input stream to a cracking unit, wherein the first input stream comprises a naphtha feedstock;{'sub': '5', 'cracking the naphtha feedstock within the cracking unit to form a first output stream comprising light olefins and pygas, wherein the pygas comprises Chydrocarbons;'}{'sub': '5', 'passing the pygas comprising Chydrocarbons from the cracking unit to an extraction unit;'}{'sub': '5', 'separating benzene and toluene from the pygas comprising Chydrocarbons within the extraction unit;'}recovering a raffinate from the extraction unit;passing the raffinate from the extraction unit to a reforming unit having a reforming catalyst disposed therein;contacting the raffinate with the reforming catalyst to form a second output stream; andrecovering the second output stream from the reforming unit.22. The process of claim 21 , wherein the naphtha feedstock comprises a N+2A value of from about 40 to about 55.23. The process of claim 21 , wherein the cracking unit comprises a steam cracker.24. The process of claim 21 , further comprising hydrogenating the pygas comprising Chydrocarbons prior to extraction.25. The process of claim 21 , wherein the raffinate has a higher N+2A than the naphtha feedstock.26. The process of claim 21 , wherein the raffinate comprises a N+2A value of from about 75 to about 85.27. The process of claim 21 , wherein the reforming catalyst comprises a Group VIII noble metal.28. The process of claim 21 , wherein the reforming catalyst comprises a promoter selected from gallium claim ...

Integrated process for producing an alkenyl-substituted aromatic compound

An integrated process of preparing a C 2-5 alkenyl-substituted aromatic compound using a C 6-12 aromatic compound and a C 2-5 alkane as raw materials. The process involves feeding a C 2-5 alkane, for example ethane, and a C 2-5 alkyl-substituted aromatic compound, for example ethylbenzene, to a dehydrogenation reactor for concurrent dehydrogenation to a C 2-5 alkene, for example ethylene, and a C 2-5 alkenyl-substituted aromatic compound, for example stryrene; separating the dehydrogenation effluent to recover a gaseous stream containing alkene, hydrogen, and alkane, and to recover the aromatics with high efficiency; feeding the gas stream and a C 6-12 aromatic compound to an alkylation reactor to obtain the corresponding C 2-5 alkyl-substituted aromatic compound, which is recycled to the dehydrogenation reactor; subjecting the alkylation unit vent stream containing alkane and hydrogen to a separation step to recover alkane, which is recycled to the dehydrogenation unit; hydrogen, which is recovered at 99% chemical grade purity and energy.

Integriertes verfahren zur herstellung einer alkenyl-substituierten aromatischen verbindung

Process for the preparation of hydrogenated hydrocarbon compounds

A process for the dehydrogenation of a paraffinic hydrocarbon compound, such as an alkane or alkylaromatic hydrocarbon compound to produce an unsaturated hydrocarbon compound, such as an olefin or vinyl aromatic compound or mixture thereof, in which a dehydrogenation catalyst contacts gaseous reactant hydrocarbons in a reactor at dehydrogenation conditions.