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In this page you will find free data about Acrylic Acid, including:
- What is Acrylic Acid
- How to make Acrylic Acid
- Acrylic Acid uses and applications
This page presents brief synopsis of Acrylic Acid production technology, describing, in a concise way, relevant technical and economic aspects. Each manufacturing process description will consist of:
- Major process steps
- Simplified, schematic flow diagram & key equipment
- Important safety or environmental considerations
- Economic perspective, comprising capital expenditures and/or operating expenses
Acrylic Acid Manufacture via Propylene Oxidation
Acrylic acid is a moderately strong carboxylic acid primarily used as an intermediate in the production of acrylate esters. These acrylate esters are then mainly used to manufacture adhesives, plastics additives, coatings, paints and textiles.
This simplified flowsheet depicts a propylene oxidation process similar to technology for the production of ester-grade acrylic acid (EAA) that was developed by Lurgi GmbH and Nippon Kayaku. This process is described in the next paragraphs.
Reaction and Quench
Chemical-grade (CG) propylene is mixed with steam and air and fed to a two-step oxidation reaction system. In the first step, the propylene is oxidized to acrolein and, in the second step, the acrolein is oxidized to acrylic acid. Both steps are carried out in tubular, fixed-bed reactors. The heat generated by the exothermic reactions is used to generate steam. The effluent from the reaction system is sent to a quench tower, where the acrylic acid formed is absorbed in water. Part of the residual gas obtained by the top of the quench tower is incinerated, with the balance being recycled to the first-step reactor. The aqueous solution is sent to downstream units for product recovery.
The aqueous solution from the quench step is fed to an extractor, where the ...
In the purification area, the concentrated acrylic acid stream from the crude acrylic acid column is ...
Bio-acrylic Acid Production from Glucose
The following paragraphs describe bio-based acrylic acid production from glucose syrup, where the glucose is initially fermented to generate 3-hydroxypropionic acid (3-HPA), which is then dehydrated to produce acrylic acid.
The figure below presents a simplified flow diagram of the process.
The culture media used in the pre-fermentation ...
After fermentation, cell debris and other suspended solids are removed ...
The acrylic acid solution is fed to the ...
Acrylic Acid Pathways
Processes based on propylene oxidation are traditionally most employed in the production of acrylic acid. The block flow diagram illustrates other alternative pathways for the production of acrylic acid, starting from different feedstocks.