In the fields of biochemistry, pharmaceuticals, and food production, lactic acid, as a high value-added product, faces increasingly stringent purity requirements. Traditional extraction methods suffer from low efficiency, high energy consumption, and unstable product purity, directly affecting product quality and production costs. The centrifugal extractor independently developed by Zhengzhou Tiei Extraction offers a breakthrough technology that provides the industry with a more efficient, stable, and environmentally friendly solution, meeting the growing market demand for lactic acid in food additives, biodegradable materials, and pharmaceutical formulations.
Centrifugal Extractor: Technological Breakthrough, Efficiency Leap
Building on years of technical expertise, Zhengzhou Tiei Extraction has launched a new generation of centrifugal extractor, achieving multiple core breakthroughs in lactic acid extraction processes:
- Efficient Mixing and Rapid Separation
The equipment uses high-speed centrifugal force to achieve high-intensity mixing and rapid separation of the liquid-liquid phases, significantly shortening residence time, avoiding emulsification, and significantly improving extraction efficiency and product purity. The lactic acid extraction rate can reach over 95%, and solvent residue is far below industry standards. - Energy Saving and Continuous Operation
Tiei Extraction centrifugal extractor supports fully automated continuous operation, reducing manual intervention and lowering operating costs. Compared with traditional mixer settler, it cuts energy consumption by about 30%. It also requires minimal floor space, making it easy to integrate into production lines and scale up. - Durable Materials with Strong Corrosion Resistance
The main body is built from high-strength stainless steel and specialty alloy materials, ensuring excellent corrosion resistance and cleanliness. This makes it particularly suitable for organic acid systems such as lactic acid, extending equipment lifespan and ensuring production safety. - Intelligent Control, Consistent Performance
Equipped with an integrated PLC automatic control system, the extractor precisely regulates critical parameters such as speed, flow rate, and phase ratio. Real-time monitoring ensures product quality consistency and process reproducibility.
Lactic Acid Extraction Process
- Pretreatment
The fermentation broth is microfiltered to remove mycelium and suspended solids, followed by pH adjustment to the optimal extraction range (typically 3.0–4.0), creating the best conditions for extraction. - Multi-Stage Countercurrent Centrifugal Extraction
The pretreated feed and specialized extractant simultaneously enter centrifugal extractor, where multi-stage countercurrent extraction takes place under a high-speed centrifugal field:
The two phases mix efficiently inside the centrifuge, allowing lactic acid to quickly transfer from the aqueous phase to the organic phase.
Under strong centrifugal force, the heavy phase (aqueous) and light phase (organic) separate rapidly.
Continuous countercurrent extraction of 3–8 stages can be achieved, maximizing extraction yield. - Stripping Process
The loaded organic phase enters the stripping section, where it contacts a stripping agent (typically an alkaline aqueous solution). Lactic acid transfers back into the aqueous phase, achieving concentration and purification. - Solvent Recovery and Recycling
The separated organic phase is recovered via distillation and recycled back into the extraction stage, greatly reducing solvent consumption and production costs. - Product Refining
The aqueous phase obtained from stripping undergoes further decolorization, ion exchange, and vacuum concentration, yielding high-purity lactic acid products of different grades.
Practical Case Studies
Case 1:
A global Top 3 lactic acid producer adopted the CWL-M centrifugal extractor production line for fermentation broth processing. As a result, annual output of high-purity lactic acid increased by 9,000 tons, while wastewater treatment costs were reduced by RMB 18 million per year.
Case 2:
A pharmaceutical intermediate manufacturer replaced its traditional calcium salt production line with centrifugal extraction. Product premium increased by 25% (thanks to pharmaceutical-grade purity), and FDA certification was accelerated by 50%.
Zhengzhou Tiei Extraction’s centrifugal extractor not only addresses common challenges in lactic acid extraction, but also stands out with its stability, efficiency, and eco-friendly performance, making it the ideal choice for enterprises seeking higher quality, lower costs, and stronger competitiveness. We look forward to collaborating with partners across industries to drive extraction technology to new heights.
Email: sales@tieiextraction.com
Whatsapp: +86 19069612820
