Methods of Recycling End-of-Life Rubber and Oil-Fouled Plastics
AssigneeExxonMobil Chemical Patents Inc.
InventorsRainer Kolb, Brian W. Satterley
Life of this patent
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Abstract
Methods for absorbing residual hydrocarbon liquids from plastic waste including obtaining hydrocarbon liquid-fouled plastic waste shreds, wherein the plastic waste shreds have a particle size of about 0.1 inches to about 3 inches; admixing the hydrocarbon liquid-fouled plastic waste shreds with absorbent elastomer granules, wherein the absorbent elastomer granules have a particle size of about 0.05 inches to about 2 inches; wherein the ratio of absorbent elastomer to hydrocarbon liquid-fouled plastic is about 1:4 to about 4:1 by weight; and agitating the mixture for a period of time.
Claims20
A method for absorbing residual hydrocarbon liquids from plastic waste comprising:
- obtaining hydrocarbon liquid-fouled plastic waste shreds, wherein the plastic waste shreds have a particle size of about 0.1 inches to about 3 inches;
- admixing the hydrocarbon liquid-fouled plastic waste shreds with absorbent elastomer granules, wherein the absorbent elastomer granules have a particle size of about 0.05 inches to about 2 inches:
- wherein the ratio of absorbent elastomer to hydrocarbon liquid-fouled plastic is about 1:4 to about 4:1 by weight;
- and
- agitating the mixture for a period of time.
A process for pyrolyzing a mixture of cleaned plastic waste and hydrocarbon liquid-absorbed elastomer granules in a coking unit comprising:
- thermally cracking the mixture to at least partially convert the mixture components into their monomeric form:
- wherein the plastic waste is cleaned by a process comprising:
- obtaining hydrocarbon liquid-fouled plastic waste shreds, wherein the plastic waste shreds have a particle size of about 0.1 inches to about 1.5 inches:
- admixing the hydrocarbon liquid-fouled plastic waste shreds with absorbent elastomer granules,
- wherein the absorbent elastomer granules have a particle size of about 0.05 inches to about 0.5 inches:
- and
- wherein the ratio of absorbent elastomer to hydrocarbon liquid-fouled plastic is about 4:1 or more by weight:
- and
- agitating the mixture for a period of time.
Dependencies are inferred from the claim text.