Continuous production technology of oxidized wax through non-catalytic oxidation of Fischer-Tropsch wax
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This technology adopts refined Fischer-Tropsch wax from the 200,000 tons/year Fischer-Tropsch wax plant of Ningmei Fine Chemical Company as raw material to produce oxidized wax. It overcomes the bottlenecks of traditional processes, including dark product color, non-separable catalyst, safety risks of oxygen process, and unstable product quality.
By adopting a self-designed dedicated modular oxidation reactor and independently developed catalyst-free continuous air oxidation process, it realizes the continuous oxidation of various grades of Fischer-Tropsch wax with air as the oxidant without adding any catalyst, forming a complete set of catalyst-free continuous air oxidation technology with independent intellectual property rights.
A 100-ton-class pilot plant for continuous air oxidation of Fischer-Tropsch wax was completed and put into operation in May 2023. The pilot plant operates stably and successfully produces qualified oxidized Fischer-Tropsch wax products, laying a solid foundation for industrial scale-up.
The application of this technology enables the leapfrog development of Fischer-Tropsch wax into high-end application fields, extends the downstream industrial chain of coal indirect liquefaction, enriches product categories, improves product added value and market competitiveness, and promotes the high-end, differentiated and high-value development of coal-based Fischer-Tropsch wax products.
Product Applications
After oxidative modification, polar groups such as -OH, -COOH, -C=O and -COOR are added to the molecular structure of Fischer-Tropsch wax. This endows oxidized wax with excellent emulsifiability, pigment dispersibility, lubricity and oil solubility.
It is widely used in PVC processing, wood-based panels, automotive industry, papermaking, agriculture, textile, plastic processing, pigment dispersion and other fields.
The oxidized Fischer-Tropsch wax produced by this technology is free of sulfur, nitrogen and aromatic hydrocarbons, making it more environmentally friendly than petroleum-based products. Its quality is superior to domestic petroleum-based oxidized waxes and meets the technical indicators of oxidized Fischer-Tropsch wax from South Africa’s Sasol.
Technical Advantages：
1）Equipped with a dedicated modular oxidation reactor to generate fine and uniform oxidation bubbles, which greatly enhances mass transfer efficiency and effectively accelerates the oxidation reaction rate.
2）Uses air as the oxidant with no catalyst added, delivering a safer and more environmentally friendly reaction process.
3）Compatible with multiple grades of Fischer-Tropsch wax raw materials, supporting customized production of oxidized Fischer-Tropsch wax with different oxidation depths.
4）Adopts a continuous oxidation process with simple operation and stable product quality; tail gas discharge meets safety standards and product performance can be customized on demand.
Post time：2025-12-18
