Method for separating acetic acid and water
A technology of acetic acid dehydration and acetic acid aqueous solution, which is applied in the separation/purification of carboxylic acid compounds, organic chemistry, etc., and can solve the problems of high energy consumption and high equipment manufacturing cost for acetic acid dehydration
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[0026] use figure 1 As shown in the flow process, the acetic acid aqueous solution 1 (wherein the acetic acid concentration is 38% by mass) enters the acetic acid dehydration tower 2 from the middle, and after being separated by rectification, the gaseous phase stream 3 is obtained at the top of the tower, and the liquid phase stream 7 is obtained at the bottom of the tower; the stream 3 passes through the condenser 4 After heat exchange and condensation, it is divided into logistics 5 and logistics 6. Logistics 5 enters the follow-up process as the tower top product discharge, and logistics 6 returns to the top of acetic acid dehydration tower 2; after the heat exchange of reboiler 8, logistics 7 is divided into logistics 9 And logistics 10, logistics 9 returns to the bottom of 2, and logistics 10 enters the follow-up process as the output of the tower kettle product. The concentration of acetic acid in the discharge from the bottom of the acetic acid dehydration tower is gre...
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