US4227995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demetallization of hydrocarbon feedstock
Assignee: Lummus Technology LLC
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Filing: 1978-12-06
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Granted: 1980-10-14
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Expires: 1998-12-06
Abstract
Abstract A metal containing hydrocarbon feedstock, such as a heavy residue, is contacted with hydrogen and a material characterized by low porosity, less than 0.3 cc/gram; low surface area, less than 5 m 2 /g; high average pore diameter, greater than 1,000 Angstroms; and a high distribution of large pores, at least 40%, and preferably 50 to 80% of pores greater than 10,000 Angstroms. A preferred material is coke.
Inventors
- 👤 Morgan C. Sze
- 👤 Harvey D. Schindler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:09
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/60; B01J35/66; B01J35/61; B01J35/612; C; C10; C10G; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
112 words
A process for demetallizing a metal-containing hydrocarbon feedstock, comprising: contacting said metal-containing hydrocarbon feedstock with hydrogen and a material having a porosity of less than 0.3 cc/gram, a surface area of less than 5 m 2 /gram, an average pore diameter in excess of 1,000 °A. and a pore distribution in which at least 40% of the pores have a size of greater than 10,000 °A., at least 60% of the pores have a size in excess of 1,000 °A., and less than 20% of the pores have a size of less than 100 °A., said contacting being effected at demetallization conditions to deposit metals present in said feedstock on said material.
Claim 2
Dependent Claim
112 words
A process for demetallizing a metal-containing hydrocarbon feedstock, comprising: contacting said metal-containing hydrocarbon feedstock with hydrogen and a material having a porosity of less than 0.3 cc/gram, a surface area of less than 5 m 2 /gram, an average pore diameter in excess of 1,000 °A. and a pore distribution in which at least 40% of the pores have a size of greater than 10,000 °A., at least 60% of the pores have a size in excess of 1,000 °A., and less than 20% of the pores have a size of less than 100 °A., said contacting being effected at demetallization conditions to deposit metals present in said feedstock on said material.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein the porosity is less than 0.1 cc/gram.
Claim 4
Dependent Claim
17 words
The process of claim 2 wherein the surface area is less than 3 meter square per gram.
Claim 5
Dependent Claim
40 words
The process of claim 1 wherein the feedstock is selected from the group consisting of heavy petroleum crudes, petroleum residues from atmospheric and vacuum distillations, shale oil and residues thereof, tar sands, bitumen, coal tar pitches and solvent deasphalted oils.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein the feed has a metals content of at least 100 ppm.
Claim 7
Dependent Claim
25 words
The process of claim 5 wherein the demetallizing is effected with said material free of added hydrogenating components of Group VI-B and Group VIII metals.
Claim 8
Dependent Claim
29 words
The process of claim 6 wherein the demetallization is effected at a temperature of from 500° F. to 1000° F. and a pressure of from 300 to 3000 psig.
Claim 9
Dependent Claim
64 words
The process of claim 1 wherein the porosity is less than 0.1 cc/gram, the surface area is less than 2 m 2 /gm, 50 to 80% of the pores are greater than 10,000 A, 70 to 80% of the pores are of a size greater than 1,000 A and less than 10% of the pores are of a size of less than 100 A.
Claim 10
Dependent Claim
127 words
A process for demetallizing a metal containing hydrocarbon feedstock, comprising: contacting said metal containing hydrocarbon feedstock with hydrogen and a coke selected from the group consisting of calcined coke and green coke, said coke having a porosity of less than 0.3 cc/gram, a surface area of less than 5 m 2 /gram, an average pore diameter in excess of 1,000 A and a pore distribution in which at least 40% of the pores have a size of greater than 10,000 A, at least 60% of the pores have a size in excess of 1,000 A, and less than 20% of the pores have a size of less than 100 A, said contacting being effected at demetallization conditions to deposit metals present in said feedstock on said coke.
Claim 11
Dependent Claim
127 words
A process for demetallizing a metal containing hydrocarbon feedstock, comprising: contacting said metal containing hydrocarbon feedstock with hydrogen and a coke selected from the group consisting of calcined coke and green coke, said coke having a porosity of less than 0.3 cc/gram, a surface area of less than 5 m 2 /gram, an average pore diameter in excess of 1,000 A and a pore distribution in which at least 40% of the pores have a size of greater than 10,000 A, at least 60% of the pores have a size in excess of 1,000 A, and less than 20% of the pores have a size of less than 100 A, said contacting being effected at demetallization conditions to deposit metals present in said feedstock on said coke.
Claim 12
Dependent Claim
12 words
The process of claim 9 wherein the coke is a green coke.
Claim 13
Dependent Claim
11 words
The process of claim 9 wherein the coke is calcined coke.
Claim 14
Dependent Claim
13 words
The process of claim 9 wherein the porosity is less than 0.1 cc/gram.
Claim 15
Dependent Claim
16 words
The process of claim 12 wherein the surface area is less than 3 m 2 /gram.
Claim 16
Dependent Claim
29 words
The process of claim 9 wherein the demetallization is effected at a temperature of from 500° F. to 1,000° F. and a pressure of from 300 to 3,000 psig.
Claim 17
Dependent Claim
23 words
The process of claim 9 wherein the coke employed in the demetallization is produced by delayed coking of a portion of the feedstock.
Claim 18
Dependent Claim
25 words
The process of claim 9 wherein subsequent to the demetallization the coke is employed as a fuel and deposited metal is recovered from the residue.
Claim 19
Dependent Claim
17 words
The process of claim 9 wherein the feed has a metals content of at least 100 ppm.
Claim 20
Dependent Claim
40 words
The process of claim 17 wherein the feedstock is selected from the group consisting of heavy petroleum crudes, petroleum residues from atmospheric and vacuum distillations, shale oil and residues thereof, tar sands, bitumen, coal tar pitches and solvent deasphalted oils.
Claim 21
Dependent Claim
72 words
The process of claim 9 wherein the porosity is less than 0.1 cc/gram, the surface area is less than 2 m 2 /gram, and the pore distribution is one in which 50 to 80% of the pores are greater than 10,000 A, 70 to 80% of the pores are of a size greater than 1,000 A and less than 10% of the pores are of a size of less than 100 A.
Claim 22
Dependent Claim
24 words
The process of claim 19 wherein the demetallizing is effected with coke free of added hydrogenating components of Group VI-B and Group VIII metals.
Claim 23
Dependent Claim
38 words
The process of claim 19 wherein the metals content is at least 100 ppm and the demetallization is effected at a temperature of from 500° F. to 1,000° F. and a pressure of from 300 to 3,000 psig.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |