US4143086A
Expired / Lapsed
US
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Fluid catalytic cracking of amorphous polypropylene
Assignee: Phillips Petroleum Co
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Filing: 1977-05-02
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Granted: 1979-03-06
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Expires: 1997-05-02
Abstract
Abstract The propylene values of waste, amorphous polypropylene are recovered at least in part, by charging amorphous polypropylene together with a hydrocarbon feedstock to a catalytic cracking unit.
Inventors
- 👤 Robert A. Carle
- 👤 Paul D. Hann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:56
CPC Classifications
C; C10; C10G; C10G11/00; C07; C07C; C07C4/00; C07C4/22; C10G1/00; C10G1/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
A process comprising: charging a mixture of amorphous polypropylene containing a titanium catalyst residue and a hydrocarbon feedstock to a catalytic cracking unit, said amorphous polypropylene being present in an amount up to about 2.5 volume percent, based upon the feed to said unit; and contacting the mixture of amorphous polypropylene and feedstock with a catalyst in the catalytic cracking unit to produce an effluent comprising propylene, wherein the cracking catalyst in the catalytic cracking unit is in contact with at least one metal capable of poisoning the catalyst and wherein the titanium catalyst residue in the amorphous polypropylene deactivates at least a portion of the at least one metal that is capable of poisoning the catalyst.
Claim 2
Dependent Claim
117 words
A process comprising: charging a mixture of amorphous polypropylene containing a titanium catalyst residue and a hydrocarbon feedstock to a catalytic cracking unit, said amorphous polypropylene being present in an amount up to about 2.5 volume percent, based upon the feed to said unit; and contacting the mixture of amorphous polypropylene and feedstock with a catalyst in the catalytic cracking unit to produce an effluent comprising propylene, wherein the cracking catalyst in the catalytic cracking unit is in contact with at least one metal capable of poisoning the catalyst and wherein the titanium catalyst residue in the amorphous polypropylene deactivates at least a portion of the at least one metal that is capable of poisoning the catalyst.
Claim 3
Dependent Claim
26 words
A process according to claim 1 wherein said titanium catalyst residue is the reduction product of the reaction of titanium tetrachloride and an alkylaluminum halide compound.
Claim 4
Dependent Claim
27 words
A process according to claim 1 wherein said titanium catalyst residue is the reduction product of the reaction of titanium tetrachloride and a dialkyl aluminum chloride compound.
Claim 5
Dependent Claim
27 words
A process according to claim 3 wherein the amount of titanium catalyst residue in the amorphous polypropylene is approximately 11,000 parts per million parts of amorphous polypropylene.
Claim 6
Dependent Claim
88 words
The process of claim 1 wherein the effluent from said cracking unit is fractionated to at least obtain a propylene cut, a gasoline cut, a light cycle oil, a heavy cycle oil and a bottoms product, wherein said bottoms product is decanted to obtain a decant oil and a slurry oil, and wherein said amorphous polypropylene is thereafter at least partially dissolved in said slurry oil and wherein the resulting mixture of slurry oil and amorphous polypropylene is charged to said catalytic cracking unit together with said feedstock.
Claim 7
Dependent Claim
24 words
The process of claim 5 wherein the amount of said amorphous polypropylene in said slurry oil ranges from 0.5 to about 10 volume percent.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein said hydrocarbon feedstock is a virgin gas oil.
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) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |