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US 2026/0297440 A1Published application
A process for purifying a pyrolysis oil
AssigneeBase SE
InventorsOliver PILARSKI, Armin LANGE DE OLIVEIRA, Gisela HIEBER, Daniel KOEPKE, Monica HAAG, Mathias FEYEN, Michael SCHREIBER, Andreas MELZER, Steffen MUELLER, Felix HUELSMANN
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Abstract
A method for manufacture of polyesters with recycle content is described in various aspects. The methods of the present disclosure effectively and cost-efficiently incorporates recycled DMT into existing TPA-based polyester manufacturing systems. Recycle feed compositions for manufacture of polyesters with recycle content and recycled content polyesters are also described.
Claims21
-25. (canceled)
A process for purifying a pyrolysis oil, the process comprising:
- (i) providing a stream F0 comprising the pyrolysis oil;
- (ii) subjecting the stream F0 provided in (i) to extraction in at least one extraction zone ZE, obtaining a stream F1 comprising the extracted pyrolysis oil, wherein (ii) comprises:
- (ii.1) introducing F0 into an extraction unit UM1 comprised in ZE;
- (ii.2) bringing in contact F0 with water and a base B in UM1 at a temperature T1 in the range of from 10 to 200° C., obtaining a mixture M1 comprising an aqueous phase PA(1) and an organic phase PO(1), the pH of the aqueous phase PA(1) of M1 being in the range of from 7.5 to 11;
- (ii.3) passing the mixture M1 obtained according to (ii.2) in a liquid-liquid separation unit US1 comprised in ZE, US1 being located downstream of UM1, obtaining a stream FA(1) comprising PA(1) and a stream F1 comprising PO(1) being the extracted pyrolysis oil;
- (ii.4) removing F1 from ZE;
- (iii) subjecting the stream F1 provided in (ii) to washing in at least one washing zone ZW, ZW being located downstream of ZE, obtaining a stream F2 comprising the purified pyrolysis oil.
4 more elements
Dependencies are inferred from the claim text.