US3882013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing highly aromatized low-sulphur hydrocarbon petroleum stock
Assignee: Individual
•
Filing: 1973-03-15
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Granted: 1975-05-06
•
Expires: 1993-03-15
Abstract
Abstract A method of producing highly aromatized low-sulfur hydrocarbon oil stock involves destructive catalytic hydroaromatization of vacuum gas oil at temperatures of from 500* to 600*C, under a pressure of from 5 to 50 atm, at a space velocity of the stock feed of from 1 to 10 hr 1, with a hydrogen-stock ratio of from 500 to 3000 nm3 per ton of stock; isolating from the thusobtained hydroaromatizate a fraction boiling between 200* to 300*-400*C and the residue boiling above 300*-400*C; isolating an aromatic concentrate from said hydroaromatizate fraction that boils between 200 to 300*-400*C. A method of processing the thus-obtained said aromatic concentrate and said residue into carbon-black stock resides in a direct utilization of both either separately or in a mixture with each other at a ratio of from 100:6 to 100:60, respectively. A method of processing said aromatic concentrate into naphthalene according to the invention resides in a direct hydrodealkylation of same in the presence of a catalyst containing the elements of Groups VI and VIII of the Periodic System, on solid carriers.
Inventors
- 👤 Yakov Rafailovic Katsobashvili
- 👤 Anatoly Sergeevich Serenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:49
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/58; C10G2400/00; C10G2400/30
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
121 words
A METHOD OF PRODUCING HIGHLY AROMATIZED LOW-SULFUR HYDROCARBON PETROLEUM STOCK, COMPRISING DESTRUCTIVE CATALYTIC HYDROAROMATIZATION OF A STRAIGHT RUN VACUUM DISTILLATE BOILING BETWEEN 300* TO 450*-560*C AT A TEMPERATURE OF FROM 500* TO 620*C, UNDER PRESSURE OF FROM 5 TO 50 ATM AND AT A SPACE VELOCITY OF STOCK FEED FROM 1 TO 10 HR -1, THE HYDROGENSTOCK RATIO RANGING FROM 500 TO 3000 NM3/T; ISOLATING FROM THE RESULTANT HYDROAROMATIZATE A FRACTION BOILING BETWEEN 200* TO 300*-400*C, AND A RESIDUE THAT BOILS AT A TEMPERATURE OVER 300*-400*C; AND ISOLATING AN AROMATIC CONCENTRATE FROM SAID HYDROAROMATIZATE FRACTION BOILING BETWEEN 200: TO 300*-400*C WHEREIN THE CATALYSTS COMPRISE THE OXIDES OF THE METALS OF GROUPS V1 AND V111 OF THE PERIODIC SYSTEM, ON SOLID CARRIERS.
Claim 2
Independent Claim
121 words
A METHOD OF PRODUCING HIGHLY AROMATIZED LOW-SULFUR HYDROCARBON PETROLEUM STOCK, COMPRISING DESTRUCTIVE CATALYTIC HYDROAROMATIZATION OF A STRAIGHT RUN VACUUM DISTILLATE BOILING BETWEEN 300* TO 450*-560*C AT A TEMPERATURE OF FROM 500* TO 620*C, UNDER PRESSURE OF FROM 5 TO 50 ATM AND AT A SPACE VELOCITY OF STOCK FEED FROM 1 TO 10 HR -1, THE HYDROGENSTOCK RATIO RANGING FROM 500 TO 3000 NM3/T; ISOLATING FROM THE RESULTANT HYDROAROMATIZATE A FRACTION BOILING BETWEEN 200* TO 300*-400*C, AND A RESIDUE THAT BOILS AT A TEMPERATURE OVER 300*-400*C; AND ISOLATING AN AROMATIC CONCENTRATE FROM SAID HYDROAROMATIZATE FRACTION BOILING BETWEEN 200: TO 300*-400*C WHEREIN THE CATALYSTS COMPRISE THE OXIDES OF THE METALS OF GROUPS V1 AND V111 OF THE PERIODIC SYSTEM, ON SOLID CARRIERS.
Claim 3
Dependent Claim
18 words
A method as claimed in claim 1, wherein the vacuum-distillate is low-sulfur, sulfurous or high-sulfur vacuum gas oil.
Claim 4
Dependent Claim
19 words
A method as claimed in claim 1, wherein the oxide of the metal of Group VI is molybdenum oxide.
Claim 5
Dependent Claim
17 words
A method as claimed in claim 1, wherein the solid carrier is an active alumina or aluminosilicate.
Claim 6
Dependent Claim
19 words
A method as claimed in claim 1, wherein the catalyst has a molydbenum oxide-to-alumina ratio within 12:88 to 16:84.
Claim 7
Dependent Claim
26 words
A method as claimed in claim 1, wherein the destructive hydroaromatization of the vacuum distillate is carried out within a temperature range of 530* to 600*C.
Claim 8
Dependent Claim
26 words
A method as claimed in claim 1, wherein the destructive hydroaromatization of the vacuum distillate occurs under a hydrogen pressure of from 20 to 30 atm.
Claim 9
Dependent Claim
32 words
A method as claimed in claim 1, wherein the destructive hydroaromatization of the vacuum distillate proceeds at a space velocity of its feed equal to 4-7 volumes per catalyst volume per hour.
Claim 10
Dependent Claim
27 words
A method as claimed in claim 1, wherein the destructive hydroaromatization of the vacuum distillate takes place at a hydrogen-stock ratio of from 1000 to 1500 nm3/t.
Claim 11
Dependent Claim
28 words
A method as claimed in claim 1, wherein the products isolated from the hydroaromatizate are a fraction boiling between 200*-220* to 300*-380*C and a residue boling above 300*-400*C.
Claim 12
Dependent Claim
23 words
A method as claimed in claim 1, wherein the destructive hydroaromatization of the vacuum distillate involves recycling of the residue boiling above 300*-400*C.
Claim 13
Dependent Claim
21 words
A method as claimed in claim 1, wherein the aromatic concentrate is isolated from the hydroaromatizate fraction by the adsorption method.
Claim 14
Dependent Claim
17 words
A method as claimed in claim 1, wherein the aromatic concentrate is extraction--isolated from the hydroaromatizate fraction.
Claim 15
Dependent Claim
24 words
A method of processing the aromatic concentrate obtained according to claim 1, wherein said aromatic concentrate is subjected directly to hydrodealkylation to produce naphthalene.
Claim 16
Dependent Claim
85 words
A method as claimed in claim 14, wherein said aromatic concentrate is subjected to hydrodealkylation over catalysts selected from the group consisting of the elements of Groups VI and VIII of the Periodic System on solid carriers, at a temperature from 560* to 580*C, under a pressure of 30 atm, at a space velocity of feed of the aromatic concentrate ranging from 0.5 to 2.0 hr 1, with the hydrogen-stock ratio of from 500 to 1500 nm3/t, involving recycling of the residue boiling above 230*.
Claim 17
Dependent Claim
20 words
A method of processing the stock obtained according to claim 1, wherein said aromatic concentrate is converted into carbon-black stock.
Claim 18
Dependent Claim
22 words
A method of processing the stock obtained according to claim 1, wherein the residue boiling above 300*-400*C is converted into carbon-black stock.
Claim 19
Dependent Claim
37 words
A method of processing the stock obtained according to claim 1, wherein to produce carbon-black stock, there are mixed the aromatic concentrate and the residue boiling above 300*-400*C, the ratio therebetween ranging from 100:6 to 100:60, respectively.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |