Integrated system for in-situ organic peroxide production and oxidative heteroatom conversion

Patent metadata

Field	Value
Publication number	US-9540572-B2
Application number	US-201514679504-A
Country	US
Kind code	B2
Filing date	Apr 6, 2015
Priority date	Jul 27, 2011
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

An oxidative treatment system, e.g., oxidative desulfurization or denitrification, is provided in which the oxidant is produced in-situ using an aromatic-rich portion of the original liquid hydrocarbon feedstock. The process reduces or replaces the need for the separate introduction of liquid oxidants such as hydrogen peroxide, organic peroxide and organic hydroperoxide in an oxidative treatment process.

First claim

The invention claimed is:

1. An apparatus for conversion of sulfur-containing and nitrogen-containing hydrocarbon compounds in a hydrocarbon feedstock to their respective oxidation products comprising:
an aromatic separation apparatus operable to extract aromatic compounds from the hydrocarbon feed, the aromatic separation zone including an inlet for receiving the hydrocarbon feedstock, an aromatic-rich outlet and an aromatic-lean outlet;
an organic peroxide generation apparatus in fluid communication with the aromatic-rich outlet and a source of gaseous oxidant and having an outlet for discharging a mixture containing organic peroxide and heteroatom-containing hydrocarbons, the organic peroxide generation apparatus containing an effective quantity of catalyst effective to promote organic peroxide generation and operating under conditions effective to promote organic peroxide production by reaction of hydrocarbons in the aromatic-rich fraction and gaseous oxidant; and
an oxidative reaction apparatus in fluid communication with the organic peroxide generation apparatus outlet and the aromatic-lean outlet, and having an outlet for discharging a mixture containing oxidation products of heteroatom-containing hydrocarbons, the oxidative reaction apparatus operating under conditions effective to promote oxidation of heteroatom-containing hydrocarbons by reaction of heteroatom-containing hydrocarbons and the produced organic peroxide.

2. The apparatus as in claim 1 , further comprising
a separation apparatus operable to separate the hydrocarbon feedstock into a first portion and a second portion and including an inlet for receiving the hydrocarbon feedstock, a first portion outlet and a second portion outlet; and
the aromatic separation apparatus being in fluid communication with the second portion outlet for passage of the second portion of the hydrocarbon feed for extraction of aromatic compounds from the second portion of the hydrocarbon feed for passage via the aromatic-rich outlet,
wherein the oxidative reaction apparatus is also in fluid communication with the first portion outlet for passage of the first portion of the hydrocarbon feed.

3. The apparatus of claim 1 , wherein the catalyst effective to promote organic peroxide generation comprises a heterogeneous catalyst compound having the general formula M x O y , where x=1 or 2, and y=2 or 5, and where M is an element that is selected from the group consisting of the elements of groups IVB, VB and VIB of the Periodic Table.

4. The apparatus of claim 1 , wherein the catalyst effective to promote organic peroxide generation is a heterogeneous catalyst comprising Co(Salophen) or complexes of Co(Salophen).

5. The apparatus of claim 1 , wherein the catalyst effective to promote organic peroxide generation is a homogeneous catalyst comprising a transition metal complex.

6. The apparatus of claim 3 , wherein the catalyst effective to promote organic peroxide generation further comprises a homogeneous catalyst including a transition metal complex.

7. The apparatus of claim 4 , wherein the catalyst effective to promote organic peroxide generation further comprises a homogeneous catalyst including a transition metal complex.

8. The apparatus as in claim 1 , further comprising an aromatic-rich stream separation apparatus having an inlet in fluid communication with the aromatic-rich outlet of the aromatic separation apparatus, a first outlet in fluid communication with the organic peroxide generation apparatus and a second outlet in fluid communication with the oxidative reaction apparatus.

Assignees

• Saudi Arabian Oil Co

Inventors

• Koseoglu Omer Refa
• Bourane Abdennour

Classifications

• C10G67/0418

  The hydrotreatment being a hydrorefining · CPC title

• C10G67/00

  Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only · CPC title

• C10G67/12

  including oxidation as the refining step in the absence of hydrogen · CPC title

• C10G67/16

  plural parallel stages only · CPC title

• C10G53/14

  including at least one oxidation step · CPC title