公开(公告)号：US07132566B2

公开(公告)日：2006-11-07

申请号：US10667744

申请日：2003-09-22

申请人： Charles Edwan Sumner, Jr. ,  Philip Edward Gibson ,  Robert Lin ,  Eric Jackson Fugate ,  Ernest William Arnold

发明人： Charles Edwan Sumner, Jr. ,  Philip Edward Gibson ,  Robert Lin ,  Eric Jackson Fugate ,  Ernest William Arnold

IPC分类号： C07C51/16 ,  C07C51/42

CPC分类号： C07C51/47 ,  C07C51/43 ,  C07C51/487 ,  C07C63/26

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 from 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 color and low impurity levels without the use of purification steps like hydrogenation.

摘要翻译： 公开了一种生产纯化的羧酸产物的方法。 该方法包括从固体 - 液体置换区中的粗制羧酸浆液中除去杂质以形成浆料产物。 如果在分阶段的氧化区和结晶区进一步处理，得到浆状产物至结晶产物。 将结晶产物在冷却区进一步冷却，随后过滤并在过滤和干燥区中干燥。 该方法产生具有良好颜色和低杂质水平的纯化羧酸产物，而不使用纯化步骤如氢化。

公开(公告)号：US07586000B2

公开(公告)日：2009-09-08

申请号：US11154221

申请日：2005-06-16

申请人： Alan George Wonders ,  Thomas Young Lightfoot ,  Charles Edwan Sumner, Jr. ,  Thomas Earl Woodruff ,  Ernest William Arnold, III ,  Eric Jackson Fugate ,  Charles Helton Hitchcock ,  Brent Alan Tennant ,  John David Aycock

发明人： Alan George Wonders ,  Thomas Young Lightfoot ,  Charles Edwan Sumner, Jr. ,  Thomas Earl Woodruff ,  Ernest William Arnold, III ,  Eric Jackson Fugate ,  Charles Helton Hitchcock ,  Brent Alan Tennant ,  John David Aycock

IPC分类号： C07C51/16

CPC分类号： C07C51/265 ,  C07C51/42 ,  C07C63/26

摘要： Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.