Simulation and Optimization of Maleic Anhydride Absorption Column

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Abstract Aspen Plus 10.0 has been used to simulate the absorption process of the maleic anhydride absorption column. The influence of the feed temperature of the reactant gas, the maleic anhydride content in the reactant gas, the amount of circulating absorbent, and the water content in the circulating absorbent on the maleic anhydride content in the tail gas of the column and the water content of the maleic anhydride-rich absorbent in the bottom of the column were investigated. The comparison between the simulated calculation results and the device operating data show that under the same conditions, the error between the simulated value and the device operating value is less than 1%, indicating that the simulation method is reliable. In order to ensure that the maleic anhydride content in the tail gas at the top of the column is not higher than 0.02%, the water content in the column bottom rich maleic anhydride absorbent is not higher than 0.2%, and the operation load of subsequent devices is reduced, the process parameters of the absorption column are optimized:the feed temperature of the reaction gas is 108℃, the content of maleic anhydride in the reaction gas is 2.36%, and the amount of circulating absorbent is 3.12 times of maleic anhydride in the reaction gas.

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	Articles by authors
	Huang Yiping
	Sun Yuyu
	Wu Dan
	Yue Changhai
	Li Pingli

Keywords： maleic anhydride absorption column solvent absorption dibutyl phthalate simulation optimization

Received 2020-11-16;

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Huang Yiping, Sun Yuyu, Wu Dan, Yue Changhai, Li Pingli.Simulation and Optimization of Maleic Anhydride Absorption Column[J] Chemcial Industry and Engineering, 2021,V38(5): 88-95

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