化工学报 ›› 2022, Vol. 73 ›› Issue (7): 3099-3108.doi: 10.11949/0438-1157.20220108
Peng WEI(),Jun CHEN(
),Zhiguo WANG,Fei LIU
摘要:
在保证产品纯度的情况下,提出一种带额外色谱柱的双部分丢弃策略以提高模拟移动床的产率。通过将工艺点选取在纯提取产品和非纯提余产品区域以增大进料流量,并将由此导致的含较多杂质的提余产品暂时丢弃。丢弃的提余产品作为循环进料通入到一个额外色谱柱中以进一步分离,部分不能达到指定纯度的额外产品被永久丢弃。在模拟移动床和额外色谱柱处分别收集到的产品组成总产品。分析了工艺点的选取、提余产品的积分纯度阈值和额外产品的积分纯度阈值对总产品性能参数的影响。研究结果表明,所提策略能够以较高的回收率利用原料,且能够显著提高分离过程的产率,其分离效果优于传统的模拟移动床工艺和部分丢弃策略。
中图分类号:
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