18293259. METHOD FOR PREPARING ACRYLIC ACID (LG CHEM, LTD.)
METHOD FOR PREPARING ACRYLIC ACID
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METHOD FOR PREPARING ACRYLIC ACID
This abstract first appeared for US patent application 18293259 titled 'METHOD FOR PREPARING ACRYLIC ACID
Original Abstract Submitted
A method for preparing acrylic acid, the method including: obtaining a reaction product including unreacted lactic acid, water, a light gas component, and acrylic acid by supplying a lactic acid aqueous solution to a reactor to allow a dehydration reaction to proceed; supplying the reaction product to a first cooling tower to separate the reaction product into a lower fraction containing unreacted lactic acid and an upper fraction containing water, a light gas component, and acrylic acid; supplying the upper fraction of the first cooling tower to a second cooling tower to separate a lower fraction containing water and acrylic acid therefrom; and obtaining acrylic acid by purifying the lower fraction of the second cooling tower.