Method and process for depolymerization of a plastic polymer
AssigneeSaudi Arabian Oil Company
InventorsOmer Refa KOSEOGLU, Robert Peter HODGKINS
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Abstract
Methods for depolymerization of a plastic polymer. An embodiment includes supplying a plastic polymer and aromatic bottoms from an aromatic recovery complex, the aromatic bottoms comprising C9+ aromatic compounds; dissolving the plastic polymer in the aromatic bottoms to obtain a dissolved plastic polymer solution comprising dissolved plastic polymer and C9+ aromatic compounds; and catalytically cracking the dissolved plastic polymer solution in the presence of a catalyst such that the dissolved plastic polymer and the C9+ aromatic compounds are cracked to obtain light products.
Claims21
A method for depolymerization of a plastic polymer, the method comprising:
- supplying the plastic polymer and aromatic bottoms from an aromatic recovery complex, the aromatic bottoms comprising C9+ aromatic compounds;
- dissolving the plastic polymer in the aromatic bottoms to obtain a dissolved plastic polymer solution comprising dissolved plastic polymer and C9+ aromatic compounds;
- catalytically cracking the dissolved plastic polymer solution in the presence of a catalyst such that the dissolved plastic polymer and the C9+ aromatic compounds are cracked to obtain light products.
A method for depolymerization of a plastic polymer, the method comprising:
- supplying an aromatic bottoms from an aromatic recovery complex, the aromatic bottoms comprising C9+ aromatic compounds and having a boiling point of at least 180° C.;
- hydrodearylating the aromatic bottoms to obtain hydrodearylated aromatic bottoms;
- supplying the plastic polymer and dissolving it in the hydrodearylated aromatic bottoms to obtain a dissolved plastic polymer solution comprising dissolved plastic polymer and C9+ aromatic compounds;
- catalytically cracking the dissolved plastic polymer solution in the presence of a catalyst such that the dissolved plastic polymer and the C9+ aromatic compounds are cracked to obtain light products.
Dependencies are inferred from the claim text.