| Patent Number |
Title Of Patent |
Date Issued |
| 7494641 |
Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of c |
February 24, 2009 |
| Disclosed is a process that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic acid. The process involves the addition of a wash solution to a high temperature molten dispersion to recover the |
| 7452522 |
Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of c |
November 18, 2008 |
| Disclosed is a process that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic acid. The process involves the addition of a wash solution to a high temperature molten dispersion to recover the |
| 7381386 |
Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic a |
June 3, 2008 |
| A method for removing impurities from a mother liquor comprising a carboxylic acid, a metal catalyst, impurities by (a) evaporating the mother liquor comprising a carboxylic acid, a metal catalyst, impurities and a solvent in a first evaporator zone to produce a vapor stream and a co |
| 7351396 |
Extraction process for removal of impurities from an aqueous mixture |
April 1, 2008 |
| A method for removing impurities from an aqueous mixture or purified aqueous by extracting the aqueous mixture or purified aqueous mixture with an extraction solvent in an extraction zone to form an extract stream and the raffinate stream; and optionally separating the extract stream |
