The factors which have effect on PT acid content in PTA product are the activity of Pd/C catalyst,4-CBA and PT acid content in TA, crystal condition, in-feeding concentration and centrifugal separation effect.

• 影响PTA产品中PT酸含量的因素有 :Pd/C催化剂的活性 ,TA中 4 CBA和PT酸的含量 ,结晶条件 ,进料浓度和离心分离效果。