METHOD OF EXTRACTING METHACROLEIN FROM ACRYLIC ACID, REPRESENTING MAIN COMPONENT AND DESIRED PRODUCT, AND FROM LIQUID PHASE CONTAINING METHACROLEIN AS SECONDARY COMPONENT Russian patent published in 2011 - IPC C07C51/573 C07C51/43 B01D9/02 C07C57/07 C07C51/42 C07C57/04 C07C51/54 C07C45/81 C07C47/22

Abstract RU 2430908 C2

FIELD: chemistry.

SUBSTANCE: method of extracting acrylic acid from a liquid phase uses acrylic acid as the main component and desired product and methacrolein as the by-product, where the liquid phase used is obtained via at least one fuzzy separation from a gaseous mixture of products of gas-phase partial oxidation on a heterogeneous catalyst of at least one tri-carbon precursor of acrylic acid, where the liquid phase is crystallised with enriched acrylic acid in the formed crystallised product and methacrolein in the residual liquid phase.

EFFECT: method enables efficient separation of methacrolein from acrylic acid.

14 cl, 1 ex, 1 tbl

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RU 2 430 908 C2

Authors

Khajlek Jorg

Mjuller-Ehngel' Klaus Joakhim

Adami Kristof

Diterle Martin

Dates

2011-10-10—Published

2006-03-01—Filed