科研之友
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摘要
An N,N-dimethylformamide (DMF)/water mixture was selected to analyze several distillation-assisted mechanical vapor-recompression (MVR) heat-pump processes compared to conventional distillation. Four distillation processes (i.e., conventional, a single MVR, MVR-conventional, and two-stage MVR-double-column heat pumps) were simulated by using the Aspen software platform to determine the energy savings and best alternative. The research results showed that a single MVR heat-pump distillation can save 21.4% of the energy consumption as compared to conventional distillation; the MVR-conventional heat-pump distillation and the two-stage MVR-double-column heat-pump distillation can save 71.1% and 74.6% of the energy load, respectively.
