Adsorbents and methods of use

Patent metadata

Field	Value
Publication number	US-10246647-B2
Application number	US-201615080784-A
Country	US
Kind code	B2
Filing date	Mar 25, 2016
Priority date	Mar 26, 2015
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

Systems, methods and compositions for reducing the heteroatom content of hydrocarbon feed using transition metal complexes and adsorption techniques. The transition metal complexes include titanyl, hafnyl and zirconyl complexes activated using one or more hydroperoxides or peracids. The activated adsorbents are incorporated into one or more vessels as an adsorption bed for adsorbing the heteroatoms present in hydrocarbon feeds. The systems, methods and compositions separate the heteroatoms passed through the system by contacting the adsorption compositions with the heteroatoms of the hydrocarbon feed, adsorbing the heteroatom to the adsorption material, further allowing for the retrieval of a hydrocarbon product having a reduced heteroatom content.

First claim

What is claimed is:

1. A method for reducing a heteroatom content of a hydrocarbon feed comprising the steps of:
providing an adsorbent having a metal complex bound to an inorganic oxide support, wherein the metal complex is a titanyl having a titanium molecule covalently bonded to an alcohol or polyol;
contacting the adsorbent with a hydroperoxide or a peracid, forming an activated adsorbent;
contacting the activated adsorbent with the hydrocarbon feed;
binding a heteroatom present in the hydrocarbon feed to the activated adsorbent, forming a heteroatom-bound adsorbent, leaving behind a hydrocarbon feed having a reduced heteroatom content; and
separating the hydrocarbon feed having the reduced heteroatom content from the heteroatom-bound adsorbent.

2. The method of claim 1 , further comprising the step:
contacting the heteroatom bound adsorbent with a solvent, the solvent removing the heteroatom from the heteroatom-bound adsorbent, forming a regenerated activated adsorbent.

3. The method of claim 2 , wherein the solvent is a hydroperoxide or peracid.

4. The method of claim 2 , further comprising the step of:
separating the heteroatom dissolved in the solvent from the regenerated activated adsorbent.

5. The method of claim 2 , further comprising the steps of:
contacting the regenerated activated adsorbent with a second hydrocarbon feed; and
binding a heteroatom of the second hydrocarbon feed to the regenerated activated adsorbent.

6. The method of claim 1 , wherein the metal complex is selected from the group consisting of bis(glycerolato)oxotitanium(IV), bis(sorbitolato)oxotitanium(iv), bis(erythritolato)oxotitanium (IV), bis(mannitolato)oxotitanium(IV) and combinations thereof.

7. The method of claim 1 , wherein hydroperoxide or peracid is selected from the group consisting of hydrogen peroxide, tert-butyl hydroperoxide, ethylbenzene hydroperoxide, cumyl hydroperoxide, tetrahydronaphthalene hydroperoxide, performic acid, peracetic acid and combinations thereof.

8. The method of claim 1 , wherein the metal complex of the activated adsorbent is bis(polyol)(tert-butyl hydroperoxo)oxotitanium(IV), bis(polyol)(ethylbenzene hydroperoxo)oxotitanium(IV), bis(polyol)(cumyl hydroperoxo)oxotitanium(IV) or bis(polyol)(tetrahydronaphthalene hydroperoxo)oxotitanium(IV).

9. The method of claim 1 , wherein heteroatom content of the hydrocarbon feed is reduced by at least 85%.

Assignees

• Auterra Inc
• Cenovus Energy Inc

Inventors

• Litz Kyle E
• Rankin Jonathan P
• Shipley Erica H
• Scudder Michael
• Mccaskill Trent A

Classifications

• C10G25/003 Primary

  Specific sorbent material, not covered by C10G25/02 or C10G25/03 · CPC title

• C10G25/12

  Recovery of used adsorbent · CPC title

• B01J20/0211

  Compounds of Ti, Zr, Hf · CPC title