US3673077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing electrode binder pitch and carbon black feedstock
Assignee: Shell USA Inc
•
Filing: 1969-09-29
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Granted: 1972-06-27
•
Expires: 1989-09-29
Abstract
Abstract There is disclosed a process for converting the residue portion of a cracked petroleum product into electrode binder pitch and carbon black feedstock, both more valuable products, by heat soaking the residue to produce electrode binder pitch and a middle distillate, and blending the middle distillate with some of the electrode binder pitch to produce a carbon black feedstock.
Inventors
- 👤 Abraham Gerrit Alexander Roza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:48
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/06; C09; C09C; C09C1/00; C09C1/44; C09C1/48
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
24 words
The process of claim 1 wherein the residual fraction separated from the cracked product has an initial boiling point between 250* and 400* C.
Claim 2
Dependent Claim
30 words
The process of claim 1 wherein the heat soaking is carried out under a pressure above atmospheric at a temperature between 400* and 450* C. for 2 hours at most.
Claim 3
Dependent Claim
27 words
The process of claim 1 wherein the heat soaking is carried out at a temperature between 350* and 400* C., while air is passed through the liquid.
Claim 4
Dependent Claim
47 words
The process of claim 4 wherein the heat soaking is carried out under atmospheric pressure and enough air is passed through the liquid to remove light material so that an electrode binder pitch with the desired softening point remains behind in the heat soaker as a residue.
Claim 5
Dependent Claim
23 words
The process of claim 5 wherein the heat soaking is applied to a residual fraction with an initial boiling point above 350* C.
Claim 6
Dependent Claim
19 words
The process of claim 1 wherein the cracking is carried out at a temperature between 450* and 550* C.
Claim 7
Dependent Claim
16 words
The process of claim 1 wherein cracking is carried out at a temperature above 750* C.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein a catalytic cracker cycle oil is cracked.
Claim 9
Dependent Claim
17 words
The process of claim 1 wherein a petroleum distillate boiling between 350* and 500* C. is cracked.
Claim 10
Dependent Claim
17 words
The process of claim 1 wherein a petroleum distillate boilinG between 170* and 370* C. is cracked.
Claim 11
Dependent Claim
17 words
The process of claim 1 wherein a petroleum distillate boiling between 50* and 200* C. is cracked.
Claim 12
Dependent Claim
26 words
The process of claim 1 wherein the middle distillate used for the preparation of carbon black feedstock has a flash point of at least 65* C.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |