Abstract: In this paper，the simulation and optimization of vinyl acetate distillation process was implemented by the flowsheeting simulation software. Compared with different thermodynamic models,we obtained the appropriate model and the optimal parameters of the feed-stage,reflux ratio and distillation ratio. In the case of the same tower，the vinyl acetate distillation strategy was modified by using the high efficiency flow-guided sieve tray. Running result of the revamped plant shows that the technology of high-efficiency distillation technology with computer optimization can improve the quility of the products and reduce the consumptions of raw metrials and energy. The economic benefits were considerable.

Key words: vinyl acetate, distillation, computer simulation, optimization, energy saving

摘要： 利用化工流程模拟软件对乙酸乙烯精馏过程进行模拟优化，通过模型对比得到了适用于计算该物系的物性方法；分析了各工艺参数对分离过程的影响，得到了最佳进料板位置、回流比和采出量。同时在原有塔体不变的情况下，利用高效导向筛板对乙酸乙烯精馏过程进行改造，并得到了工业应用。改造后工厂的运行结果表明，结合计算机优化的高效精馏技术能有效地提高产品纯度，降低原料和能量消耗，从而取得了很好的经济效益。

关键词: 乙酸乙烯, 精馏, 计算机模拟, 优化, 节能