摘要
采用模拟移动床实现分子筛脱蜡过程是烷基苯生产中的一个重要环节。用模拟移动床动态吸附模型对分子筛脱蜡进行了模拟计算,探讨随时间改变流量的措施对提高分子筛脱蜡过程效率的影响。计算结果表明:进料量、脱附剂流量均随时间周期性地先慢后快变化的操作方式,可提高产量、减少脱附剂用量、节省能耗,同时正构烷烃的纯度及收率都能符合技术指标要求。这一结果为分子筛脱蜡过程的优化提供了更新的理论根据。
The simulated moving-bed adsorption （SMB） used for separation of paraffins process is one of the important processes in the production of alkyl benzene, in order to increase the efficiency, the operation scheme with volume flows varied within the switching intervals was considered. A detailed model of the SMB plant was used for verifying the optimization results. The calculated results show that the relevant amounts of desorbent can be saved and the higher yield of paraffins can be obtained in the operation of an SMB process by periodically varying feed flow and desorbent flow with the time within each switching interval when the purity can be in keeping with those required. The conclusion offers a new theory for increasing the input and decreasing the energy in separation of paraffins process. All these results are of great benefit to improve the production of alkyl benzene.
出处
《化学工程》
CAS
CSCD
北大核心
2006年第2期8-12,共5页
Chemical Engineering(China)
关键词
模拟移动床
计算
分子筛脱蜡
simulated moving-bed adsorption
calculating
paraffin
