Enhanced solvent recovery process boosts PTA production, saves energy
Two producers of purified terephthalic acid (PTA) have licensed a new enhanced solvent-recovery process. The process uses a proprietary solvent that boosts the capacity of the acetic acid recovery system while reducing energy usage. Because acid recovery is usually the limiting step in PTA production, increasing it can boost PTA capacity 5--10%. The solvent recovery enhancement (SRE) technology is licensed by Glitsch Technology Corp. (GTC), Houston, The GT-SRE process can be applied in grassroots or existing plants. The GT-SRE process replaces the water used in high and low-pressure absorbers with a phosphine oxide-based solvent. The solvent is most selective to acetic acid, but is also selective to methyl acetate and, to a lesser extent, paraxylene. This selectivity increases recovery of these components from vent streams.
- OSTI ID:
- 409766
- Journal Information:
- Oil and Gas Journal, Vol. 94, Issue 51; Other Information: PBD: 16 Dec 1996
- Country of Publication:
- United States
- Language:
- English
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