乙炔法制醋酸乙烯分离过程模拟及优化研究
发布时间：2019-06-16 19:16
【摘要】： 根据乙炔法醋酸乙烯(VAc)工业装置流程建立分离过程模型,选用ProⅡ作为模拟软件,利用现有装置的实际工业数据进行仿真模拟,模拟结果与现有装置运行数据吻合,微量组分的数据虽有一定偏差但变化趋势吻合。 根据现有分离流程的特点,提出了降低合成气进塔温度的节能流程方案,一方面可回收热量、减少循环液冷却量,同时可提高冷凝、吸收系统的效率,但会使洗涤塔循环尾气中的乙醛含量升高(新型催化剂对循环尾气中的乙醛含量的升高有一定的耐受能力)。 以某工程项目为背景,对节能流程进行了详细的模拟分析。模拟结果表明：节能流程与现有流程在VAc吸收率方面差别不大；节能流程二级吸收塔底的粗VAc液中的溶解乙炔含量低于现有流程。节能分离流程能满足工程设计要求。
[Abstract]:According to the process of acetylene vinyl acetate (VAc) industrial plant, the separation process model is established. Pro II is selected as the simulation software, and the actual industrial data of the existing plant are used to carry out the simulation. The simulation results are in good agreement with the operation data of the existing plant. Although the data of trace components have certain deviation, the changing trend is consistent. According to the characteristics of the existing separation process, an energy saving process scheme for reducing the temperature of syngas inlet tower is put forward. On the one hand, the heat can be recovered, the cooling capacity of circulating liquid can be reduced, and the efficiency of condensation and absorption system can be improved, but the acetaldehyde content in the circulating tail gas of washing tower will be increased (the new catalyst has certain tolerance to the increase of acetaldehyde content in circulating tail gas). Based on a project, the energy saving process is simulated and analyzed in detail. The simulation results show that the VAc absorptivity of the energy saving process is not different from that of the existing process, and the dissolved acetylene content in the crude VAc solution at the bottom of the secondary absorption tower is lower than that of the existing process. Energy saving separation process can meet the requirements of engineering design.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TQ225.12
[Abstract]:According to the process of acetylene vinyl acetate (VAc) industrial plant, the separation process model is established. Pro II is selected as the simulation software, and the actual industrial data of the existing plant are used to carry out the simulation. The simulation results are in good agreement with the operation data of the existing plant. Although the data of trace components have certain deviation, the changing trend is consistent. According to the characteristics of the existing separation process, an energy saving process scheme for reducing the temperature of syngas inlet tower is put forward. On the one hand, the heat can be recovered, the cooling capacity of circulating liquid can be reduced, and the efficiency of condensation and absorption system can be improved, but the acetaldehyde content in the circulating tail gas of washing tower will be increased (the new catalyst has certain tolerance to the increase of acetaldehyde content in circulating tail gas). Based on a project, the energy saving process is simulated and analyzed in detail. The simulation results show that the VAc absorptivity of the energy saving process is not different from that of the existing process, and the dissolved acetylene content in the crude VAc solution at the bottom of the secondary absorption tower is lower than that of the existing process. Energy saving separation process can meet the requirements of engineering design.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TQ225.12
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