| 发明名称 |
PURE CARBOXYLIC ACID FILTRATION |
| 摘要 |
The present invention relates to a process for production of pure terephthalic acid comprising: a) removing a mother liquor from a terephthalic acid through a filter with a gas, wherein the gas comprises steam at a concentration of least about 50% by volume; b) purifying the gas; and c) recycling the gas purified in step (b) back to step (a).
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| 申请公布号 |
US2011269991(A1) |
申请公布日期 |
2011.11.03 |
| 申请号 |
US200913126640 |
申请日期 |
2009.10.30 |
| 申请人 |
INVISTA NORTH AMERICA S.A.R.L. |
发明人 |
JACKSON CHRISTOPHER HOWARD;LIMBACH ANTHONY PETER JOHN;MC DONNELL FINBAR GERALD;URE ALAN MACPEHERSON |
| 分类号 |
C07C51/47 |
主分类号 |
C07C51/47 |
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