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US 12,441,676 B2Granted
Process for preparing acrylic acid
AssigneeLG Chem, Ltd.
InventorsHyebin Kim, Mi Kyung Kim, Eunkyo Kim, Joon Ho Shin
Life of this patent
Estimating the term…
Abstract
The present application relates to a process for producing acrylic acid.
Claims14
A process for producing acrylic acid, the process comprising:
- (1) separating a first low-boiling-point material including acetaldehyde (ACHO) and a first high-boiling-point material including acrylic acid (AA) by cooling a reaction product of a bio-raw material;
- (2) separating a condensed second low-boiling-point material including acetaldehyde (ACHO) and a second high-boiling-point material including acrylic acid (AA) by compressing the first low-boiling-point material including acetaldehyde (ACHO);
- (3) separating a first incompressible material and a third low-boiling-point material including acetaldehyde (ACHO) by adding a second absorbent to the condensed second low-boiling-point material including acetaldehyde (ACHO) and cooling thereof;
- and
- (4) purifying the first high-boiling-point material including acrylic acid (AA) to obtain acrylic acid.
2 more elements
Dependencies are inferred from the claim text.