Jet mixing of process fluids in fixed bed reactor
AssigneeExxonMobil Research and Engineering Company
InventorRamesh Gupta
Life of this patent
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Abstract
A fixed bed catalytic reactor for converting process fluids having an upper catalyst bed and a lower catalyst bed below the upper catalyst bed for converting process fluids flowing through the upper and lower beds. A mixing zone is located between the upper bed and lower beds, and at least one jet is provided for injecting an inclined fluid jet into the mixing zone against the flow of the process fluids to entrain process fluids within the jet and to radially mix the process fluids across the mixing zone.
Claims73
A fixed bed catalytic reactor for converting process fluids comprising:
- an upper catalyst bed and a lower catalyst bed below said upper catalyst bed for converting process fluids flowing through said upper bed and said lower bed;
- a mixing zone between said upper bed and said lower bed, said mixing zone having a top surface and a bottom surface;
- and
- means for injecting at least one fluid jet in said mixing zone, said fluid jet being directional inclined against the flow of said process fluids between said upper bed and said lower bed to radially mix said process fluids.
The reactor of claims wherein said process fluids flow upwardly from said lower bed, through said mixing zone and through said upper bed, and wherein said fluid jet is downwardly inclined against the flow of said process fluids.
A cylindrically shaped fixed bed catalytic reactor for converting process fluids comprising:
- an upper catalyst bed and a lower catalyst bed below said upper catalyst bed for converting process fluids flowing downwardly through said upper bed and said lower bed;
- a mixing zone between said upper bed and said lower bed, said mixing zone having a top surface, a bottom surface and a side wall;
- and
- a nozzle installed in said mixing zone near the intersection of said bottom surface and said side wall, and upwardly inclined to point diametrically across said mixing zone at said top surface from two-thirds to one diameter distance of said mixing zone, said nozzle providing an upwardly directed turbulent fluid jet against the flow of said process fluids from said upper bed to entrain said process fluids therein and radially mix said process fluids prior to flowing into said lower bed.
A method of converting process fluids in a fixed bed catalytic reactor comprising an upper catalyst bed and a lower catalyst bed below said upper catalyst bed and a mixing zone between said upper bed and said lower bed, said mixing zone having a top surface and a bottom surface;
- said method comprising the steps of:
- flowing process fluids through said upper and lower beds and said mixing zone for converting the process fluids;
- and
- injecting at least one fluid jet into said mixing zone and inclined against the flow of said process fluids from said upper bed to radially mix said process fluids across said mixing zone prior to said process fluids flowing to said lower bed.
A method of converting process fluids in a cylindrically shaped fixed bed catalytic reactor comprising an upper catalyst bed, a lower catalyst bed below said upper catalyst bed and a mixing zone between said upper bed and said lower bed, said mixing zone having a top surface, a bottom surface and a side wall;
- said method comprising the steps of:
- flowing process fluids downwardly through said upper bed, said mixing zone and said lower bed for converting the process fluids;
- a mixing zone between said upper bed and said lower bed, said mixing zone having a top surface, a bottom surface and a side wall;
- and
- installing a nozzle in said mixing zone near the intersection of said bottom surface and said side wall, and inclining said nozzle upwardly to point diametrically across said mixing zone at said top surface from two-thirds to one diameter distance of said mixing zone to provide an upwardly directed turbulent fluid jet against the flow of said process fluids from said upper bed to entrain said process fluids in said fluid jet and radially mix said process fluids across said mixing zone prior to said process fluids flowing into said lower bed.
Dependencies are inferred from the claim text.