Conversion of solid wastes to fuel coke and gasoline/light oil
AssigneeMobil Oil Corporation
InventorTsoung-Yuan Yan
Life of this patent
Estimating the term…
Abstract
Solid organic wastes are slurried with hot coker recycle feed or fresh petroleum feedstocks at temperatures within the range from about 300.degree. to 1000.degree. F and the resulting mixture is coked to produce gas, oil, and coke. The oil can be used as clean liquid fuel, but preferably it is used as catalytic craker feed since it is a particularly suitable cracking stock and produces high yields of gasoline. This process affords a low-cost waste disposal method by a process compatible with current petroleum refining technology.
Claims15
A conversion process for the disposal of solid organic wastes which comprises:
- a. slurrying solid organic wastes in coker feed selected from the group consisting of coker petroleum feed stocks, coker recycle feed, and combinations thereof, wherein the weight ratio of solid organic waste to coker feed is within the range from 0.1 to 0.5;
- b. heating the slurry at a temperature within the range from about 300.degree. to 1000.degree. F. for a period of time sufficient to convert the slurry into a pitch-like composition;
- c. coking the pitch-like composition at a temperature within the range from about 800.degree. to 1000.degree. F.;
- and
- d. recovering gas, oil, and coke products.
A conversion process for the disposal of solid organic wastes which comprises:
- a. slurrying solid organic waste in a thermally stable refinery petroleum fraction boiling above about 450.degree. F., wherein the weight ratio of solid organic waste to thermally stable refinery petroleum fraction is within the range from about 0.1 to 0.5;
- b. heating the slurry at a temperature within the range from about 500.degree. to 700.degree. F. for a period of time sufficient to convert the slurry into a pitch-like composition;
- c. combining the pitch-like composition with a coker petroleum feedstock and coker recycle feed to form a modified coker feed;
- d. coking the modified coker feed at a temperature within the range from about 800.degree. to 1000.degree. F. to form a product coke and coker volatilies;
- e. fractionating the coker volatiles to recover a C.sub.1 -C.sub.3 gas fraction, a C.sub.4 - 450.degree. F. gasoline fraction, a 450.degree.-850.degree. F. coker gas oil fraction;
- and an 850.degree. F.+ recycle oil.
Dependencies are inferred from the claim text.