Views: 0 Author: Elina Publish Time: 2025-04-17 Origin: Site
1. Innovation in production technology
(1) Green catalytic technology
Non-acid catalyst substitution: Traditional ATBC production uses concentrated sulfuric acid as the esterification catalyst, which is prone to side reactions and equipment corrosion. At present, the following are mostly adopted:
Solid acid catalysts (such as molecular sieves, heteropoly acids, and sulfonated carbon materials) enhance selectivity and reduce wastewater.
Enzyme catalysis (lipase immobilization technology) : Esterification is achieved under mild conditions, reducing energy consumption
Continuous flow process: It replaces the traditional batch reaction and shortens the production cycle (such as microchannel reactor technology, which improves mass transfer efficiency).
(2) Energy conservation and purification optimization
Molecular distillation technology: It is used for the refinement of high-purity ATBC, replacing traditional vacuum distillation and reducing the risk of heat-sensitive degradation.
Wastewater recycling: Recycling technologies for citric acid and alcohol raw materials (such as membrane separation and adsorption methods) reduce the discharge of waste liquid.
2. Raw material Innovation and Bio-based transformation
Bio-based citric acid: Utilizing microbial fermentation (Aspergillus Niger) to produce citric acid from renewable resources such as corn and sugarcane, reducing the carbon footprint.
