Hydroisomerization process
AssigneeUop LLC
InventorsPeter Kokayeff, Laura Elise Leonard
Life of this patent
Estimating the term…
Abstract
A process is provided for improving the cold flow properties of a hydrocarbon stream employing a substantially liquid-phase continuous hydroisomerization zone where the reaction zone has a substantially constant level of dissolved hydrogen throughout without the addition of additional hydrogen external to the reaction zone.
Claims20
A process for improving the cold flow properties of a hydrocarbon stream, the process comprising:
- providing a hydrocarbon feed stream having a cloud point, a pour point, and a CFPP value;
- taking at least a portion of the hydrocarbon feed stream as a hydroprocessing feed;
- admixing an amount of hydrogen with the hydroprocessing feed, the hydrogen in a form available for substantially consistent consumption in the substantially liquid-phase continuous hydroisomerization zone;
- directing the hydroprocessing feed to the substantially liquid-phase continuous hydroisomerization zone;
- and
- reacting the hydroprocessing feed undiluted with another hydrocarbon stream in the substantially liquid-phase continuous hydroisomerization zone using at least a hydroisomerization catalyst at hydroisomerization conditions effective to produce an effluent having at least one of a reduced cloud point, a reduced pour point, and a reduced CFPP value relative to the cloud point, pour point, and CFPP value of the hydrocarbon feed stream.
A process for improving the cold flow properties of a hydrocarbon stream, the process comprising:
- providing a hydrocarbon feed stream having a cloud point, a pour point, and a CFPP value;
- admixing an amount of hydrogen with the hydrocarbon feed stream, the hydrogen in a form available for substantially consistent consumption in a liquid-phase continuous reaction zone;
- directing the hydrocarbon feed stream undiluted with another hydrocarbonaceous stream to a substantially liquid-phase continuous hydroisomerization zone;
- and
- reacting the undiluted hydrocarbon feed stream in the substantially liquid-phase continuous hydroisomerization zone using at least a hydroisomerization catalyst at hydroisomerization conditions effective to produce an effluent having at least one of a reduced cloud point, a reduced pour point, and a reduced CFPP value relative to the cloud point, pour point, and CFPP value of the hydrocarbon feed stream.
A process for improving the cold flow properties of a hydrocarbon stream having a substantial n-paraffin content, the process comprising:
- providing a hydrocarbon feed with a boiling range from about 149° C. (300° F.) to about 399° C. (750° F.) having a cloud point, a pour point, and a CFPP value;
- admixing an amount of hydrogen with the hydrocarbon feed in excess of that required for saturation of the hydrocarbon feed;
- directing the hydrocarbon feed undiluted with another hydrocarbon stream to a generally liquid-phase continuous hydroisomerization zone;
- and
- reacting the undiluted hydrocarbon feed in the generally liquid-phase continuous hydroisomerization zone over a hydroisomerization catalyst effective to produce an effluent having an increased iso-paraffin content and at least one of a reduced cloud point, a reduced pour point, and a reduced CFPP value relative to the cloud point, the pour point, and the CFPP value of the hydrocarbon feed.
Dependencies are inferred from the claim text.