Process configuration for a single phenol purification train for production of phenol and bisphenol-A in an integrated process
AssigneeSabic Global Technologies B.V.
InventorsLara Galan-Sanchez, Kae Shin Wong, Kadek Sumpena, Martino Trabuio
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Abstract
A method for purifying phenol can include contacting a first stream containing phenol with a second stream containing wastewater from a bisphenol-A (BPA) production process to form a third stream, distilling the third stream to form a fourth stream containing phenol and water, contacting the fourth stream with a fifth stream containing mother liquor from a BPA crystallization unit of the BPA production process to form a sixth stream, and distilling the sixth stream to form a products stream containing phenol.
Claims19
A method for purifying phenol, the method comprising:
- contacting a first stream comprising phenol with a second stream comprising wastewater from a bisphenol-A (BPA) production process to form a third stream;
- distilling the third stream to form a fourth stream comprising phenol and water;
- contacting the fourth stream with a fifth stream comprising mother liquor from a BPA crystallization unit of the BPA production process to form a sixth stream, wherein the fifth stream comprises 40 wt. % to 58 wt. % of phenol and 35 wt. % to 55 wt. % of water;
- and
- distilling the sixth stream to form a products stream comprising phenol.
A method for purifying phenol, the method comprising:
- contacting a first stream comprising phenol with a second stream comprising wastewater from a bisphenol-A (BPA) production process to form a third stream;
- adding an acid to the third stream prior to distilling the third stream;
- distilling the third stream to form a fourth stream comprising phenol and water,
- contacting the fourth stream with a fifth stream comprising mother liquor from a BPA crystallization unit of the BPA production process to form a sixth stream;
- and
- distilling the sixth stream to form a products stream comprising phenol.
Dependencies are inferred from the claim text.