In the acrylic acid extraction process, traditional extraction and separation processes often face challenges such as low efficiency, high solvent consumption, and easy emulsification, which directly impact production profitability. Zhengzhou Tiei Extraction Technology's CWL-M series centrifugal extractor, with their unique design and advanced technology, offer a revolutionary solution for acrylic acid extraction, helping companies reduce costs, increase efficiency, and achieve green development.
High Performance Liquid-liquid Extraction Technology
The acrylic acid extraction process is based on the principle of liquid-liquid extraction, utilizing the difference in the distribution coefficients of acrylic acid in aqueous phase and organic solvent phase (such as toluene, xylene, etc.) to achieve efficient separation and purification:
- Mixed Mass Transfer: The aqueous phase containing acrylic acid and the selected organic solvent phase are sheared at high speed within the CWL-M centrifugal extractor, forming a mixed phase with a large specific surface area. Acrylic acid is rapidly transferred from the aqueous phase to the organic phase.
- Centrifugal Separation: The mixed liquid enters the high-speed rotating drum. Under the powerful centrifugal force, the two phases with a significant density difference are quickly and clearly separated.
- Multi-stage countercurrent extraction: The equipment can be flexibly connected in series to achieve multi-stage countercurrent operation. The raffinate from the first stage serves as the feed for the next stage, while fresh solvent is added from the final stage. This maximizes mass transfer, significantly improving acrylic acid recovery and reducing solvent consumption.
- Solvent recovery: The organic phase (extraction phase) loaded with acrylic acid enters subsequent steps (such as distillation) to purify the acrylic acid, while the solvent is recovered and recycled.
Advantages of CWL-M Centrifugal Extractor
- Excellent separation efficiency
Separation in seconds: Powerful centrifugal force enables instant separation of the two phases, resulting in single-stage extraction efficiencies exceeding 90%, far exceeding those of traditional extraction column.
Strong demulsibility: High-speed centrifugation effectively breaks down emulsion layers, excelling in handling impurities or easily emulsified systems, ensuring continuous and stable operation. - Significantly reduced operating costs
Extremely low solvent carryover: Advanced structural design ensures that the residual solvent content (in the aqueous phase) after separation is less than 50ppm, significantly reducing solvent loss and recovery costs.
Fewer stages and less space: High efficiency allows for fewer extraction stages, resulting in a compact equipment size (saving 40%-60% space compared to traditional column), reducing infrastructure and maintenance costs.
Optimized energy consumption: Precisely matched motor power results in lower energy consumption compared to large mixer settler or extraction column. - Operational flexibility and stability
Wide range of processing capacity: The processing capacity of a single device covers 0.5m³/h to 50m³/h, which can easily cope with production fluctuations or capacity expansion needs.
Easy to start and stop: The amount of liquid held inside the equipment is extremely small, and the startup and shutdown are fast with little material loss.
High degree of automation: easy to integrate with DCS system to achieve precise control and remote monitoring of key parameters such as flow rate and speed. - Environmental protection and safety
Closed operation: The fully enclosed design effectively prevents VOCs from escaping, improves the workshop environment, and protects the health of employees.
Low solvent loss: significantly reduces solvent usage and replenishment, lowering environmental risks and procurement costs. - Easy maintenance
Modular design: core components (such as the drum) are easy to disassemble, clean and maintain.
Reliable operation: solid structure, key components are wear-resistant and corrosion-resistant, with low failure rate and long service life.
A large acrylic acid production company replaced the original extraction column system with the CWL-M centrifugal extractor:
The acrylic acid recovery rate increased from 85% to over 96%.
Solvent consumption has been reduced by approximately 35%, resulting in annual cost savings exceeding RMB 3 million.
The equipment footprint is reduced by 60%, freeing up valuable space for new production lines.
The emulsification problem is completely solved and the operation stability of the device is greatly improved.
Zhengzhou Tiei Extraction has been deeply engaged in the field of centrifugal extraction for over a decade. Our CWL-M centrifugal extractor has been widely used and proven in fields such as petrochemicals, fine chemicals, hydrometallurgy, and environmental wastewater treatment. Contact Tiei Extraction for detailed technical information and customized solutions, etc.
Email: sales@tieiextraction.com
Whatsapp: +86 19069612820
