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PROCESS FOR OBTAINING ACRYLIC ACID FROM ITS SOLUTIONS IN TRI-N-BUTYL PHOSPHATE
PROCESS FOR OBTAINING ACRYLIC ACID FROM ITS SOLUTIONS IN TRI-N-BUTYL PHOSPHATE
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机译:从其在磷酸三正丁酯中的溶液中获得丙烯酸的方法
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摘要
Acrylic acid is separated from its solutions in tri-n-butyl phosphate by establishing from such a solution a vapor phase comprising substantially all of the acrylic acid and a portion of the solvent, at a temperature below the degradation point of the acrylic acid; next partially or totally condensing said vapor phase; and then distilling the acrylic acid from such condensation product, while maintaining an amount of acrylic acid at the base of the distillation column, and conducting the distillation under conditions such that neither solvent degradation nor acrylic acid crystallization results.
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