Method for upgrading heavy by-products from acrylic acid production

JP2025519957A5Pending Publication Date: 2026-07-01ARKEMA FRANCE SA
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
ARKEMA FRANCE SA
Filing Date
2023-06-20
Publication Date
2026-07-01

AI Technical Summary

Technical Problem

The regeneration efficiency of acrylic acid from heavy by-products in acrylic acid production is limited by the high viscosity of residues during pyrolysis, which hinders the recovery of upgradable monomers and requires additional equipment and solvents.

Method used

A method involving batch hydrolysis of heavy by-products with a controlled water-to-AAHP ratio, followed by continuous pyrolysis, which reduces the viscosity of the residue and enhances the recovery efficiency of acrylic acid without relying on external manufacturing units.

Benefits of technology

The method effectively reduces the viscosity of the residue and improves the recovery efficiency of acrylic acid, delaying the arrival at the viscosity limit and reducing the need for additional equipment or solvents, thus enhancing operational efficiency and cost-effectiveness.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 00000000_0000_ABST
    Figure 00000000_0000_ABST
Patent Text Reader

Abstract

The present invention relates to a method for regenerating acrylic acid (AA) by pyrolysis from heavy by-products (residues called AAHP) from an acrylic acid production apparatus and reusing it in an acrylic acid production plant. This method consists of two steps: hydrolysis performed in a batch manner and decomposition performed continuously, and it improves the current performance of the decomposition plant.
Need to check novelty before this filing date? Find Prior Art