Optimization Control Technology for Product Concentration at the Top of the Distillation Tower of Methyl Ethyl Ketone Unit
Starting from optimizing the location of product extraction,attempt to increase the concentration of methyl ethyl ketone product output.By setting up experimental equipment and sampling the substances in each tray,after solid-phase extraction,gas chromatography-mass spectrometry was used to determine the composition of the substances and quantitatively calculate the concentration of methyl ethyl ketone.It was then determined that the highest content of methyl ethyl ketone was found in the gas phase on the fourth tray from the top of the tower,reaching 99.979%,which is consistent with the results obtained from the AspenPlus process simulation,so the original process of ex-tracting products from the top of the tower was changed to extracting products from the side line of the fourth plate at the top of the tower,and an optimization control plan for the concentration of products at the top of the distilla-tion tower in the methyl ethyl ketone unit was designed.The verification results show that after implementing the new lateral extraction plan,the concentration of methyl ethyl ketone product has increased from the original 99.9%to 99.95%,meeting the industry's optimal 99.95%indicator requirements,proving the effectiveness of the optimized con-trol technology studied.
methyl ethyl ketone devicedistillation towertower top product concentrationside line extractionconcen-tration control technology
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