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我公司腈纶生产使用意大利蒙特技术湿法二步法,二甲基乙酰胺(DMAC)是腈纶生产的溶剂,来溶解丙烯腈与醋酸乙烯的共聚物,从而制备纺丝原液,最后通过二甲基乙酰胺精馏系统回收再利用。能否优化在二甲基乙酰胺精馏过程中的消耗,提高质量,将直接影响到腈纶生产的成本与腈纶产品在市场上的价格定位。本论文根据公司二甲基乙酰胺(DMAC)精馏实际工艺分离二甲基乙酰胺(DMAC)和水,应用ASPEN PULS软件进行模拟,通过改变操作参数实验,得出第一效塔的适宜操作参数,指导实际生产。通过先模拟再调整的生产控制方式,使得调整更有目的性,减少了调整次数,降低了生产波动频次、保证了产品质量、降低了消耗。通过模拟与实际控制结合得出适宜的操作参数分别为:塔顶温度:117℃,塔底温度:193℃,温差:60℃,塔顶压力:181.325KPA,蒸汽量5.5T/H,回流比:1.08。
My company Acrylic production using the Montessori technology in Italy wet two-step method, dimethylacetamide (DMAC) is acrylic solvent production, to dissolve the copolymer of acrylonitrile and vinyl acetate to prepare spinning solution, and finally by dimethyl Acetamide distillation system for recycling. The ability to optimize the consumption in the DME distillation process and improve quality will directly affect the cost of acrylic production and the price positioning of acrylic products on the market. In this thesis DMAC and water were separated according to the actual DMAC distillation process. ASPEN PULS software was used to simulate. By changing the operating parameters experiment, the suitable operation of the first efficiency tower Parameters, guide the actual production. Through the first simulation and then adjust the production control, making adjustment more purpose, reducing the number of adjustments, reducing the frequency of production fluctuations, ensuring product quality and reduce consumption. Through the combination of simulation and actual control, the suitable operating parameters are as follows: temperature of top: 117 ℃, temperature of bottoms: 193 ℃, temperature difference: 60 ℃, pressure of top of column: 181.325KPA, steam amount of 5.5T / H, reflux ratio : 1.08.