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A process for reducing the sulfur content of a hydrocarbon stream, including: feeding hydrogen and a hydrocarbon stream including sulfur compounds to a catalytic distillation reactor having one or more hydrodesulfurization reaction zones; concurrently in the catalytic distillation reactor: fractiona

A process for reducing the sulfur content of a hydrocarbon stream, including: feeding hydrogen and a hydrocarbon stream including sulfur compounds to a catalytic distillation reactor having one or more hydrodesulfurization reaction zones; concurrently in the catalytic distillation reactor: fractionating the hydrocarbon stream into a heavy fraction and a light fraction; contacting hydrogen and the light fraction to form H2S and a light fraction of reduced sulfur content; recovering the light fraction, H2S, and hydrogen as an overheads; recovering the heavy fraction; heating the overheads to a temperature from 500 to 700° F.; feeding the heated overheads and hydrogen to a high temperature low pressure reactor to form H2S and a reactor effluent of reduced mercaptan content; separating the reactor effluent, H2S, and unreacted hydrogen to form a light hydrocarbon fraction and a fraction including H2S and hydrogen; recycling a portion of the light hydrocarbon fraction to the catalytic distillation reactor.

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1. A process for reducing the sulfur content of a hydrocarbon stream, the process comprising: feeding a hydrocarbon stream comprising organic sulfur compounds to a catalytic distillation reactor system having one or more reaction zones comprising a hydrodesulfurization catalyst;feeding hydrogen to t

1. A process for reducing the sulfur content of a hydrocarbon stream, the process comprising: feeding a hydrocarbon stream comprising organic sulfur compounds to a catalytic distillation reactor system having one or more reaction zones comprising a hydrodesulfurization catalyst;feeding hydrogen to the catalytic distillation reactor system;concurrently in the catalytic distillation reactor system: fractionating the hydrocarbon stream into a heavy fraction and a light fraction;contacting hydrogen and the light fraction in at least one of the reaction zones to form hydrogen sulfide and a light fraction of reduced organic sulfur content;recovering the light fraction, hydrogen sulfide, and any unreacted hydrogen as an overheads fraction;recovering the heavy fraction as a bottoms fraction;condensing and phase separating the overheads fraction to recover a vapor phase comprising hydrogen sulfide and any unreacted hydrogen and a light hydrocarbon fraction;feeding the light hydrocarbon fraction to the catalytic distillation reactor system as a total reflux;withdrawing a liquid side draw fraction from a tray located intermediate a top of the column and an upper portion of the reaction zones comprising a hydrodesulfurization catalyst;heating the side draw fraction in one or more heat exchangers to a temperature in the range from 500 to 700° F.;feeding the heated side draw fraction and optionally hydrogen to a high temperature low pressure reactor to form hydrogen sulfide and a reactor effluent of reduced mercaptan content. 2. The process of claim 1, further comprising decreasing a pressure of the side draw fraction. 3. The process of claim 1, wherein a pressure in the high temperature low pressure reactor is in the range from 25 to 320 psig. 4. The process of claim 1, further comprising contacting the bottoms fraction with hydrogen in the presence of a hydrodesulfurization catalyst to form a heavy fraction of reduced organic sulfur content. 5. The process of claim 1, further comprising concurrently: contacting the heavy fraction with hydrogen in a reaction zone of the catalytic distillation column reactor to form hydrogen sulfide and a heavy fraction of reduced organic sulfur content; andfractionating the hydrogen sulfide and the heavy fraction of reduced organic sulfur content. 6. The process of claim 1, further comprising: separating at least a portion of the hydrogen sulfide from the fraction comprising hydrogen and hydrogen sulfide; andrecycling at least a portion of the hydrogen to at least one of the distillation column reactor system and the high temperature low pressure reactor. 7. The process of claim 1, further comprising feeding at least a portion of the bottoms fraction to the high temperature low pressure reactor as a vapor. 8. The process of claim 1, further comprising combining the bottoms fraction and the reactor effluent. 9. The process of claim 8, further comprising: fractionating the combined fractions to form a fraction comprising C5 and lighter hydrocarbons and a fraction comprising C6 and heavier hydrocarbons. 10. The process of claim 9, further comprising feeding at least a portion of the C6 and heavier hydrocarbons to the high temperature low pressure reactor. 11. The process of claim 1, wherein the hydrocarbon stream comprises a full range cracked naphtha. 12. The process of claim 1, wherein the feeding the hydrogen comprises feeding the hydrogen to a location below each of the one or more reaction zones in the catalytic distillation reactor system. 13. The process of claim 1, wherein the high temperature low pressure reactor contains a hydrodesulfurization catalyst. 14. The process of claim 13, wherein the hydrodesulfurization catalyst in the high temperature low pressure reactor comprises at least one of nickel catalysts with molybdenum promotion, nickel catalysts with no promoters; molybdenum catalysts with copper promotion, and molybdenum catalysts with no promoters. 15. A process for reducing the sulfur content of a hydrocarbon stream, the process comprising: feeding a hydrocarbon stream comprising organic sulfur compounds to a catalytic distillation reactor system having one or more reaction zones comprising a hydrodesulfurization catalyst;feeding hydrogen to the catalytic distillation reactor system;concurrently in the catalytic distillation reactor system: fractionating the hydrocarbon stream into a heavy fraction and a light fraction;contacting hydrogen and the light fraction in at least one of the reaction zones to form hydrogen sulfide and a light fraction of reduced organic sulfur content;recovering the light fraction, hydrogen sulfide, and any unreacted hydrogen as an overheads fraction;recovering the heavy fraction as a bottoms fraction;condensing and phase separating the overheads fraction to recover a vapor phase comprising hydrogen sulfide and any unreacted hydrogen and a light hydrocarbon fraction;withdrawing a liquid side draw fraction from a tray located intermediate a top of the column and an upper portion of the reaction zones comprising a hydrodesulfurization catalyst;feeding a portion of the light hydrocarbon fraction to the catalytic distillation reactor system as a total reflux;combining a portion of the light hydrocarbon fraction with the side draw fraction to form a combined liquid draw;heating the combined liquid draw in one or more heat exchangers to a temperature in the range from 500 to 700° F.;feeding the heated combined liquid draw fraction and optionally hydrogen to a high temperature low pressure reactor to form hydrogen sulfide and a reactor effluent of reduced mercaptan content.