Methods for removing impurities from hydrocarbons

Patent metadata

Field	Value
Publication number	US-9896631-B2
Application number	US-201414566212-A
Country	US
Kind code	B2
Filing date	Dec 10, 2014
Priority date	Dec 10, 2014
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

Methods are provided for producing hydrocarbons. A method for producing hydrocarbons may include a method of removing impurities from a hydrocarbon stream using a strong base resin. The strong base resin absorbs at least a portion of the impurities from the hydrocarbon stream to provide a purified hydrocarbon stream. Further, the method for producing hydrocarbons may include feeding the purified hydrocarbon stream to a reaction zone comprising a catalyst to form a reaction zone effluent stream.

First claim

The invention claimed is:

1. A method for removing impurities from a hydrocarbon stream comprising:
contacting the hydrocarbon stream with at least one strong base anion exchange resin to adsorb at least a portion of the impurities from the hydrocarbon stream and produce a purified hydrocarbon stream, wherein the impurities are selected from the group consisting of N-oxides and peroxides, and the hydrocarbon stream comprises di-olefins and olefins.

2. The method of claim 1 , further comprising feeding the purified hydrocarbon stream to a reaction zone comprising a catalyst to form a reaction zone effluent stream.

3. The method of claim 1 , wherein the hydrocarbon stream comprises pyrolysis gasoline.

4. The method of claim 1 , wherein the strong base anion exchange resin is a type I anion exchange resin.

5. The method of claim 1 , wherein the hydrocarbon stream comprises di-olefins and olefins, and the strong base anion exchange resin converts less than 1 wt % of the di-olefins and olefins.

6. The method of claim 2 , further comprising hydroprocessing the purified hydrocarbon stream in the reaction zone to form the reaction zone effluent stream, wherein the reaction zone effluent has a reduced di-olefin content relative to the purified hydrocarbon stream.

7. The method of claim 2 , further comprising saturating di-olefins in the purified hydrocarbon stream in the reaction zone under di-olefin saturation conditions to convert at least a portion of the di-olefins in the purified hydrocarbon stream to form the reaction zone effluent stream.

8. The method of claim 2 , wherein the reaction zone comprises multiple reactors.

9. The method of claim 2 , wherein the catalyst comprises a metal from group 10 of the periodic table, and wherein the catalyst further comprises a support selected from one or more of aluminum oxide, silicon oxide, titanium oxide, and zirconium oxide.

10. The method of claim 2 , wherein the reaction zone operates at a temperature from about 30° C. (86° F.) to about 140° C. (284° F.).

11. The method of claim 2 , wherein the reaction zone operates at a pressure from about 1379 kPa (200 psig) to about 6895 kPa (1000 psig).

12. The method of claim 1 , wherein the strong base anion exchange resin may be regenerated.

13. The method of claim 2 , further comprising performing an additional purification process to remove at least another portion of the impurities from the purified hydrocarbon stream.

Assignees

• Uop Llc

Inventors

• Gajda Gregory J
• Dziabala Bart
• Demirel Belma
• Pereira Thomas

Classifications

• C10G25/02

  with ion-exchange material · CPC title

• C10G67/06 Primary

  including a sorption process as the refining step in the absence of hydrogen · CPC title

• C10G45/34

  characterised by the catalyst used · CPC title

• C10G45/32

  Selective hydrogenation of the diolefin or acetylene compounds · CPC title