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| This research project uses acetylene and acetic acid as raw materials, zinc acetate-activated carbon as catalyst, and uses natural gas acetylene process to produce 330,000 tons every year of vinyl acetate products. In this paper, double-effect rectification technology and heat pump technology are used to design and optimize the system's energy integration and heat exchange network. Through the analysis of Aspen Energy Analyzer V10.0 software results, it is possible to find possible energy-saving measures to minimize industrial production costs. Double-effect distillation technology is used on the vinyl acetate distillation column, and the high-grade heat source at the top of the high-pressure distillation column is used to exchange heat with the re-boiling stream at the bottom of the atmospheric distillation column to save the amount of public works At the same time, the number of heat exchangers is reduced, thereby achieving the purpose of energy saving. The use of heat pump technology in the acetic acid distillation column to achieve the purpose of making full use of the energy at the top of the column, by changing the temperature of the steam to increase the possibility of heat exchange in the stream that could not be exchanged, thereby increasing the ratio of recoverable energy To achieve greater energy savings. |
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| Keywords:Chemical engineering；natural gas acetylene process；vinyl acetate；double-effect distillation technology；heat pump technology；energy integration and heat exchange network |
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