Vanadium addition to petroleum coke slurries to facilitate deslagging for controlled oxidation

Claim 3

The method of claim 1, wherein the V 2 O 3 content of the slag varies from about 60 to 80 weight %.

Claim 4

The method of claim 1, wherein the siliceous glass content of the slag varies from about 20 to 30 weight %.

Claim 5

The method of claim 1, wherein the temperature of controlled oxidation is at least about 2000° F.

Claim 6

The method of claim 1, wherein a vanadium containing material is added to the petroleum based feedstock in an amount that varies from about 0.01 to 20 weight % of the petroleum based feedstock.

Claim 7

The method of claim 5, wherein the vanadium containing material is selected from the group consisting of soot, char, vanadium, a vanadium oxide, and mixtures thereof.

Claim 8

The method of claim 1, wherein the petroleum based feedstock is selected from the group consisting of coke, oil, and mixtures thereof.

Claim 9

The method of claim 1, wherein the controlled oxidation is conducted at a temperature that varies from about 2000° F. to 2500° F.

Claim 10

The method of claim 8, wherein the controlled oxidation temperature varies from about 2200° to 2300° F.

Claim 11

The method of claim 1, wherein a calcium-containing material selected from the group consisting of CaCO 3 , CaO, and mixtures thereof, is added to the petroleum based feedstock during partial oxidation.

Claim 12

The method of claim 1, wherein the oxidant gas comprises oxygen.

Claim 13

The method of claim 1, wherein the V 2 O 3 to glass weight ratio varies from about 7:1 to about 3:2, respectively.

Claim 14

A process for making synthesis gas which comprises: (a) adding a free-oxygen-containing oxidant gas and a petroleum based feedstock containing a slag-depositing material to a reactor with interior walls coated with refractory material; (b) reacting the feedstock and the free-oxygen-containing oxidant gas under partial oxidation conditions to produce a synthesis gas containing hydrogen and carbon monoxide and a slag byproduct comprising vanadium, primarily in the form of V 2 O 3 , and a siliceous glass material, wherein said synthesis gas exits the reactor through an outlet for recovery, and wherein a portion of the slag accumulates of the reactor walls; (c) controlling the V 2 O 3 ; glass weight ratio of the slag in the reactor during partial oxidation to an amount greater than 3:2; and (d) replacing the partial oxidation conditions with controlled oxidation conditions in the reactor end increasing the partial pressure of the oxidant gas to an amount sufficient to convert the V 2 O 3 to V 2 O 5 .

Claim 15

A process for making synthesis gas which comprises: (a) adding a free-oxygen-containing oxidant gas and a petroleum based feedstock containing a slag-depositing material to a reactor with interior walls coated with refractory material; (b) reacting the feedstock and the free-oxygen-containing oxidant gas under partial oxidation conditions to produce a synthesis gas containing hydrogen and carbon monoxide and a slag byproduct comprising vanadium, primarily in the form of V 2 O 3 , and a siliceous glass material, wherein said synthesis gas exits the reactor through an outlet for recovery, and wherein a portion of the slag accumulates of the reactor walls; (c) controlling the V 2 O 3 ; glass weight ratio of the slag in the reactor during partial oxidation to an amount greater than 3:2; and (d) replacing the partial oxidation conditions with controlled oxidation conditions in the reactor end increasing the partial pressure of the oxidant gas to an amount sufficient to convert the V 2 O 3 to V 2 O 5 .

Claim 16

The process of claim 13, wherein the V 2 O 3 content of the slag varies from about 60 to 80 weight %.

Claim 17

The process of claim 13, wherein the siliceous glass content of the slag varies from about 20 to 30 weight %.

Claim 18

The process of claim 13, wherein a vanadium containing material is added to the petroleum based feedstock in an amount that varies from about 0.01 to 20 weight % of the petroleum based feedstock.

Claim 19

The process of claim 13, wherein the vanadium containing material is selected from the group consisting of soot, char, vanadium, a vanadium oxide, and mixtures thereof.

Claim 20

The process of claim 13, wherein the petroleum based feedstock is selected from the group consisting of coke, oil, and mixtures thereof.

Claim 21

The process of claim 13, wherein the controlled oxidation is conducted at a temperature that varies from about 2000° F. to 2500° F.

Claim 22

The process of claim 13, wherein the controlled oxidation temperature varies from about 2200° to 2300° F.

Claim 23

The process of claim 13, wherein the temperature of controlled oxidation is at least about 2000° F.