US4042487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the treatment of heavy petroleum oil
Assignee: Kureha Corp
•
Filing: 1976-05-06
•
Granted: 1977-08-16
•
Expires: 1996-05-06
Abstract
Abstract In the thermal cracking of a heavy petroleum oil (having an API specific gravity of not more than 25) in a tubular type heating furnace, possible occurrence of coking trouble inside the furnace can be prevented by applying a magnetic field of fixed magnitude transversely to the flow of the heavy petroleum oil being introduced into the furnace or by applying a fixed magnitude of magnetic field transversely and, at the same time, applying a fixed magnitude of direct-current voltage parallel to the flow of the heavy petroleum oil being introduced into the furnace. More effective prevention of occurrence of coking can be obtained by having a specific inorganic substance incorporated in the heavy petroleum oil before the oil is subjected to the magnetic field or to simultaneous application of the magnetic field and voltage.
Inventors
- 👤 Koji Seguchi
- 👤 Minoru Sugita
- 👤 Kazuyoshi Inada
- 👤 Kiyoshi Tagaya
- 👤 Yuji Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:53
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; C; C10; C10G; C10G32/00; C10G32/02; B01J2219/00; B01J2219/08; B01J2219/0803; B01J2219/085; B01J2219/0852
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
55 words
In a process for the thermal cracking, in a tubular-type heating furnace, of a heavy petroleum oil having an API specific gravity of not more than 25, the improvement comprising applying a magnetic field of from 1,000 to 5,000 gausses transversely to the flow of the heavy petroleum oil feed being introduced into the furnace.
Claim 2
Dependent Claim
55 words
In a process for the thermal cracking, in a tubular-type heating furnace, of a heavy petroleum oil having an API specific gravity of not more than 25, the improvement comprising applying a magnetic field of from 1,000 to 5,000 gausses transversely to the flow of the heavy petroleum oil feed being introduced into the furnace.
Claim 3
Dependent Claim
129 words
In a process for the thermal cracking, in a tubular type heating furnace, of a heavy petroleum oil having an API specific gravity of not more than 25, the improvement comprising: a. mixing said heavy petroleum oil with 0.5 to 5% by weight of a particulate inorganic substance having a surface area of not less than 30m 2 /g and an average particle diameter of not more than 30 microns, said inorganic substance being obtained by an alkali treatment of an inorganic material, containing as its principal components, a high melting oxide and an iron oxide; and b. applying a magnetic field of from 1,000 to 5,000 gausses transversely to the flow of the mixture of the heavy petroleum oil and particulate substance feed being introduced into the furnace.
Claim 4
Dependent Claim
129 words
In a process for the thermal cracking, in a tubular type heating furnace, of a heavy petroleum oil having an API specific gravity of not more than 25, the improvement comprising: a. mixing said heavy petroleum oil with 0.5 to 5% by weight of a particulate inorganic substance having a surface area of not less than 30m 2 /g and an average particle diameter of not more than 30 microns, said inorganic substance being obtained by an alkali treatment of an inorganic material, containing as its principal components, a high melting oxide and an iron oxide; and b. applying a magnetic field of from 1,000 to 5,000 gausses transversely to the flow of the mixture of the heavy petroleum oil and particulate substance feed being introduced into the furnace.
Claim 5
Dependent Claim
28 words
The process of claim 2 wherein said inorganic material is selected from the group consisting of Laterite, Garnierite, Magnesite, Bauxite, Fly ash, Kyoto yellow ochre and mixtures thereof.
Claim 6
Dependent Claim
16 words
The process of claim 2 wherein said surface area is from 30 to 200m 2 /g.
Claim 7
Dependent Claim
81 words
In a process for the thermal cracking, in a tubular type heating furnace, of a heavy petroleum oil having an API specific gravity of not more than 25, the improvement comprising applying a magnetic field of from 1,000 to 5,000 gausses transversely to the flow of the heavy petroleum oil feed being introduced into the furnace and simultaneously applying a direct-current of 50 mA to 3A parallel to the flow of the heavy petroleum oil feed being introduced into the furnace.
Claim 8
Dependent Claim
81 words
In a process for the thermal cracking, in a tubular type heating furnace, of a heavy petroleum oil having an API specific gravity of not more than 25, the improvement comprising applying a magnetic field of from 1,000 to 5,000 gausses transversely to the flow of the heavy petroleum oil feed being introduced into the furnace and simultaneously applying a direct-current of 50 mA to 3A parallel to the flow of the heavy petroleum oil feed being introduced into the furnace.
Claim 9
Dependent Claim
148 words
In a process for the thermal cracking, in a tubular type heating furnace, of a heavy petroleum oil having an API specific gravity of not more than 25, the improvement comprising: a. mixing the heavy petroleum oil feed to the furnace with 0.5 to 5% by weight of a particulate inorganic substance having a surface area of not less than 30m 2 /g and an average particle diameter of not more than 30microns, said inorganic substance being obtained by alkali treatment of an inorganic material containing, as its principal components, a high melting oxide and an iron oxide; and b. applying a magnetic field of from 1,000 to 5,000 gausses transversely to the flow of the mixed feed of the heavy petroleum oil and particulate substance being introduced into the furnace and simultaneously applying a direct current of 50 mA to 3A parallel to said mixed feed flow.
Claim 10
Dependent Claim
148 words
In a process for the thermal cracking, in a tubular type heating furnace, of a heavy petroleum oil having an API specific gravity of not more than 25, the improvement comprising: a. mixing the heavy petroleum oil feed to the furnace with 0.5 to 5% by weight of a particulate inorganic substance having a surface area of not less than 30m 2 /g and an average particle diameter of not more than 30microns, said inorganic substance being obtained by alkali treatment of an inorganic material containing, as its principal components, a high melting oxide and an iron oxide; and b. applying a magnetic field of from 1,000 to 5,000 gausses transversely to the flow of the mixed feed of the heavy petroleum oil and particulate substance being introduced into the furnace and simultaneously applying a direct current of 50 mA to 3A parallel to said mixed feed flow.
Claim 11
Dependent Claim
28 words
The process of claim 6 wherein said inorganic material is selected from the group consisting of Laterite, Garnierite, Magnesite, Bauxite, Fly ash, Kyoto yellow ochre and mixtures thereof.
Claim 12
Dependent Claim
16 words
The process of claim 6 wherein said surface area is from 30 to 200m 2 /g.
References Cited (Backward Citations)
US2001313A
Cited
US1983027A
Cited
US1979126A
Cited
US2139969A
Cited
US2320118A
Cited
US2352791A
Cited
US2329834A
Cited
US2664394A
Cited
US2908631A
Cited
US3039955A
Cited
US3059910A
Cited
US3369994A
Cited
US3983030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |