Separation of heptane from vinyl acetate by azeotropic distillation
AssigneeLloyd Berg
InventorLloyd Berg
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Abstract
Heptane cannot be separated from vinyl acetate by conventional distillation or rectification because of the minimum boiling azeotrope. Heptane can be readily separated from vinyl acetate by using azeotropic distillation. Typical examples of effective agents are methyl acetate, ethanol, ethyl formate or t-amyl methyl ether.
Claims2
A method for recovering heptane from a mixture of heptane and vinyl acetate which comprises distilling a mixture of heptane and vinyl acetate in the presence of an azeotrope forming agent, recovering the heptane and the azeotrope forming agent as overhead product and obtaining vinyl acetate from the stillpot, wherein said azeotrope forming agent is acetonitrile.
A method for recovering vinyl acetate from a mixture of vinyl acetate and heptane which comprises distilling a mixture of vinyl acetate and heptane in the presence of an azeotrope forming agent, recovering the vinyl acetate and the azeotrope forming agent as overhead product and obtaining the heptane from the stillpot, wherein said azeotrope forming agent comprises a material selected from the group consisting of acetone, ethanol, methyl acetate, ethyl formate and t-amyl methyl ether.
Dependencies are inferred from the claim text.