Method and composition for contemporaneously dimerizing and hydrating a feed having butene to produce a gasoline composition

Patent metadata

Field	Value
Publication number	US-9796941-B2
Application number	US-201514635470-A
Country	US
Kind code	B2
Filing date	Mar 2, 2015
Priority date	Nov 1, 2011
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

Methods for producing alcohols and oligomers contemporaneously from a hydrocarbon feed containing mixed butenes using an acid based catalyst are provided. Additionally, methods for producing fuel compositions having alcohols and oligomers prepared from mixed olefins are also provided as embodiments of the present invention. In certain embodiments, the catalyst can include a dual phase catalyst system that includes a water soluble acid catalyst and a solid acid catalyst.

First claim

We claim:

1. A method for preparing a gasoline composition, the method comprising the steps of:
providing a fuel-grade gasoline;
providing an octane enhancing composition, wherein said octane enhancing composition is prepared by contacting a mixed butene stream with a dual phase catalyst system and water under conditions operable to oligomerize and hydrate the butenes to form the octane enhancing composition; and
combining the fuel-grade gasoline and octane enhancing composition, the octane enhancing composition comprising mixed butanols and DIBs to form the gasoline composition.

2. The method of claim 1 wherein the octane enhancing composition is combined with the fuel-grade gasoline after preparation without further purification.

3. The method of claim 1 wherein the octane enhancing composition is present in an amount of between about 5 and 30% by weight of the gasoline composition.

4. The method of claim 1 , wherein the dual phase catalyst system comprises a water soluble acid catalyst and a water insoluble acid catalyst.

5. The method of claim 4 , wherein the water soluble acid catalyst is an organic acid selected from acetal acid, tosylate acid and perflurated acetic acid.

6. The method of claim 4 , wherein the water soluble acid catalyst is an inorganic acid selected from HCl, H3PO4, and H2SO4.

7. The method of claim 4 , wherein the water insoluble acid catalyst is selected from ion exchange resin, zeolite, and a supported acid.

Assignees

• Saudi Arabian Oil Co

Inventors

• Xu Wei
• Mohammad Thamer A
• Harale Aadesh
• Shaik Kareemuddin M

Classifications

• C07C2/28

  with ion-exchange resins · CPC title

• C10G2300/305

  Octane number, e.g. motor octane number [MON], research octane number [RON] · CPC title

• C10G2400/02

  Gasoline · CPC title

• C10L1/1608 Primary

  Well defined compounds, e.g. hexane, benzene · CPC title

• C07C2531/10

  sulfonated · CPC title