Process for separating and recovering 3-hydroxypropionic acid and acrylic acid
OwnerXiangsheng Meng, Paraskevas Tsobanakis +1inventors
InventorsXiangsheng Meng, Paraskevas Tsobanakis, Timothy Abraham
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Abstract
Disclosed is a process for separating and recovering 3-hydroxpropionic acid from an aqueous solution comprising 3-hydroxyproprionic acid and acrylic acid, comprising contacting the aqueous solution with an organic extractant, other than ethyl acetate. Also disclosed are processes for separating acrylic acid from aqueous solutions comprising acrylic acid and an organic extractant involving back extraction with water, or distillation in the presence of water. Further disclosed is a process for separating and recovering 3-hydroxyproprionic acid and acrylic acid from an aqueous solution comprising 3-hydroxyproprionic acid and acrylic acid.
Claims17
A process for separating and recovering 3-hydroxypropionic acid from an aqueous solution comprising 3-hydroxypropionic acid and acrylic acid, the process comprising contacting the aqueous solution with an organic phase comprising an organic extractant other than ethyl acetate.
A process for separating and recovering acrylic acid from an organic phase comprising acrylic acid and an organic extractant, the process comprising contacting the organic phase with an aqueous phase comprising water.
A process for separating and recovering acrylic acid from an organic phase comprising acrylic acid and an organic extractant having a boiling point lower than 100° C., the process comprising heating the organic phase, in the presence of water, to distill the organic extractant.
A process for separating and recovering 3-hydroxypropionic acid and acrylic acid from an aqueous solution comprising 3-hydroxypropionic acid and acrylic acid, the process comprising the steps of:
- a. contacting the aqueous solution with an organic phase comprising an organic extractant other than ethyl acetate, to extract the acrylic acid into the organic phase;
- and
- b. contacting the organic phase formed in step (a) with water to extract the acrylic acid from the organic phase.
A process for separating and recovering 3-hydroxyproprionic acid and acrylic acid from an aqueous solution comprising 3-hydroxypropionic acid and acrylic acid comprising the steps of:
- a. contacting the aqueous solution with an organic phase comprising an organic extractant, other than ethyl acetate, that has a boiling point lower than about 100° C., to extract the acrylic acid into the organic phase;
- and
- b. heating the organic phase formed is step (a), in the presence of water, to distill off the organic extractant, thereby forming an aqueous acrylic acid solution.
Dependencies are inferred from the claim text.