LUMINANCE MATERIAL AND MANUFACTURING METHOD AND MANUFACTURE APPARATUS THEREOF
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United States of America Patent
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Issued Date -
May 17, 2012
app pub date -
Mar 16, 2011
filing date -
Nov 16, 2010
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Abandoned
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Abstract
A method for preparing an ester is provided. The method includes steps of mixing an acid and an alcohol in a reactive distillation column to generate a first gas mixture; transporting the first gas mixture out of the reactive distillation column; cooling down the first gas mixture for a phase separation to obtain a first liquid mixture in an upper phase; transporting the first liquid mixture back to the reactive distillation column; obtaining a second liquid mixture at a middle section of the reactive distillation column; transporting the second liquid mixture to a separative distillation column; and obtaining the ester at a bottom section of the separative distillation column.
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