The continuous extraction tower employs a continuous liquid-liquid countercurrent process. It offers a choice of three structural configurations—baffles, paddles, or reciprocating screen plates—and is constructed of 304 or 316 stainless steel. It is used for the purification and decolorization of herbal and pharmaceutical feed solutions, with specifications customized to meet specific requirements.
Description
Continuous Extraction Tower | Industrial Liquid-Liquid Counter-Current Continuous Extraction and Separation Equipment
💡 The continuous extraction tower is the core separation equipment for continuous counter-current liquid-liquid extraction. It is designed for automated, continuous extraction processes and is available in three configurations: baffle plates, rotating paddles, and reciprocating screen plates. Constructed from sanitary-grade stainless steel, it is suitable for large-scale continuous purification, impurity removal, and decolorization in the herbal extraction, pharmaceutical, and chemical industries.
I. Product Overview
The continuous extraction tower is the core separation equipment for achieving continuous countercurrent liquid-liquid extraction. It utilizes differences in the distribution coefficients between various solvents to extract, separate, enrich, and purify target components from the feedstock. The equipment is manufactured from sanitary-grade stainless steel, features a compact design and provides continuous, stable operation. Depending on material characteristics, throughput, and process requirements, users can choose from three structural configurations: baffle-type, rotary paddle-type, or reciprocating screen-type extraction towers. These units are widely used in continuous production scenarios across industries such as pharmaceuticals, botanical extraction, food, and chemicals.
II. Structural Configuration and Selection Guidelines
✅ Baffled Extraction Column
The tower is equipped with a multi-layer baffle structure that creates a meandering flow path for the two-phase fluid within the tower, thereby extending contact time and enhancing mass transfer efficiency. With its simple design, reliable operation, absence of moving parts, and ease of maintenance, it is suitable for the continuous extraction of clean materials with low to medium viscosity and offers broad applicability.
✅ Paddle-type Rotating Extraction Tower
By utilizing internally rotating blades, it achieves thorough mixing and rapid separation of two-phase fluids. It provides gentle agitation and high mass transfer efficiency, making it ideal for heat-sensitive and easily emulsifiable materials. It is well-suited for precision extraction and gentle separation applications, operates smoothly, and offers great operational flexibility.
✅ Recirculating Screen-Type Extraction Tower
By using a screen plate that moves up and down inside the tower, this process enhances two-phase mixing and stratification. It features high stage efficiency, excellent extraction performance, and a large processing capacity, making it suitable for industrial continuous extraction processes that require high purity and involve complex material systems.
III. Key Features
✅ Continuous counter-current extraction with high throughput
The continuous counter-current extraction process has a high throughput and can operate continuously and stably for 24 hours.
✅ Flexible selection from a variety of configurations
Three structural configurations are available to accommodate different material properties and process separation requirements.
✅ Sanitary-grade stainless steel
The main body is made of 304/316L stainless steel, with a polished interior surface that has no hard-to-reach areas and is easy to clean.
✅ High extraction efficiency and low solvent loss
High extraction efficiency, high solvent utilization, low losses, and economical operating costs.
✅ Compatible with automated control systems
It can be integrated with temperature control, flow meters, and interface control systems to enable automated operation.
✅ Compact footprint, easy to integrate into the entire production line
With its compact design and small footprint, it can be flexibly integrated into extraction and concentration production lines.
IV. Scope of Application
Suitable for continuous processes such as liquid-liquid extraction, separation, purification, decolorization, and impurity removal in industries including pharmaceuticals, plant extraction, food, and fine chemicals.
V. General Technical Specifications
| Material | 304 / 316L Stainless Steel |
| Structural Configuration | Baffle-type / Paddle-type Rotating / Reciprocating Screen-type (optional) |
| Throughput | Can be customized based on tower diameter and process requirements |
| Operating Temperature | Room temperature to 80°C |
| Work-related stress | Atmospheric Pressure / Slightly Positive Pressure |
| Control Method | Manual / PLC automatic control (optional) |
| Installation Methods | Upright Floor-Mounted Installation |
VI. Service Commitment
We provide end-to-end services ranging from equipment selection, process design, and manufacturing to installation, commissioning, and post-sales training. Our equipment can be customized to meet your specific needs, and we offer nationwide delivery with rapid on-site response in Chongqing.
🔗 Recommended Compatible Devices
Complete Extraction Production Line Configuration:
✅ Extraction of raw materials from the front end:Multifunctional Extraction Equipment
✅ Back-end feed concentration:Multi-effect Evaporation Equipment
✅ Complete online cleaning system:CIP (Clean-in-Place) System
