盘式连续干燥器在间苯二甲酸二甲酯-5-磺酸钠干燥中的应用

通过对间苯二甲酸二甲酯-5-磺酸钠干燥前后物料性质的分析,提出了应用于间苯二甲酸二甲酯-5-磺酸钠干燥的盘式连续干燥系统,介绍了这种干燥设备的结构、工作原理,阐述了其工艺流程及工作特点,分析了这种干燥形式的优势及应用领域,并通过与另外一种干燥器-旋转闪蒸干燥器在工作效率、能耗、操作的连续性及干燥后产品的质量等方面的比较,表明了在间苯二甲酸二甲酯-5-磺酸钠干燥作业中这种干燥器是干燥设备的适宜选择。

Synthesis and Application of a New Acrylic Ester Resin for Recycling SIPA from its Water Solution

A new acrylic ester polymer YWB-7 resin was prepared and characterized. The properties of YWB-7 resin were compared with those of the commercial Amberlite XAD-7, Diaion HP2MG and hypercrosslinked macroporous polymer NDA-150 resins. Both surface area and micropore area of YWB-7 resin were bigger than those of XAD-7 resin and HP2MG resin. The YWB-7 resin was successfully employed to recycle 5-sodiosulfoisophthalic acids （SIPA） from its solutions with and without methanol.

Poly(vinylpyridine) adsorbent for the removal of SIPA from its aqueous solution

Poly（vinylpyridine） WH-225 resin was prepared and characterized. Compared with the commercial hypercrosslinked adsorbent NDA-100 and macroporous adsorbent XAD-4 resins, the newly synthesized poly（vinylpyridine） WH-225 resin exhibited the highest adsorption capacity toward SIPA from aqueous solution.