PROCESS FOR THE PURIFICATION OF A CRUDE CARBOXYLIC ACID SLURRY
摘要
Disclosed is a process to produce a purified carboxylic acid product. The process comprises removing impurities from a crude carboxylic acid slurry in a solid-liquid displacement zone to form a slurry product. The slurry product if further treated in a staged oxidation zone and a crystallization zone to fro m a crystallized product. The crystallized product is further cooled in a cooling zone and subsequently filtered and dried in a filtration and drying zone. The process produces purified carboxylic acid product having good colo r and low impurity levels without the use of purification steps like hydrogenation.
申请公布号
CA2505976(A1)
申请公布日期
2004.06.24
申请号
CA20032505976
申请日期
2003.12.03
申请人
EASTMAN CHEMICAL COMPANY
发明人
GIBSON, PHILIP EDWARD;LIN, ROBERT;ARNOLD, ERNEST WILLIAM III;CARRELL, HARRY LEE;STEVENSON, GEORGE M.;FUGATE, ERIC JACKSON;SUMNER, CHARLES EDWAN JR.;BOWERS, DAVID TAYLOR;MCCLANAHAN, WAYNE