مقدمة
Selecting liquid-liquid extraction equipment requires more than comparing capacity and price. Industrial performance depends on mass transfer, phase separation, feed properties, solvent compatibility, residence time, and operating stability.
Density difference, viscosity, interfacial tension, and emulsion tendency also affect equipment sizing and scale-up. This article compares 10 manufacturers with different technologies and engineering capabilities, helping process engineers, EPC teams, and industrial buyers identify suitable suppliers for specific separation requirements.
How We Selected These Manufacturers
The comparison considers extraction technology, industrial applications, process engineering, equipment scalability, pilot testing, system integration, and technical support.
This list supports engineering evaluation rather than ranking companies by size or market visibility. Each manufacturer serves different feed conditions, throughput ranges, separation mechanisms, and project scales.
Liquid-Liquid Extraction Equipment Manufacturers at a Glance
| الشركة | Country | Core Technology | الأفضل لـ |
|---|---|---|---|
| Koch Modular | الولايات المتحدة الأمريكية | KARR, SCHEIBEL, RDC, pulsed and packed columns | Industrial continuous extraction |
| سولزر | سويسرا | Kühni columns, packed columns and mixer-settlers | Large-scale separation |
| Rousselet Robatel | فرنسا | Centrifugal extractors and mixer-settlers | Centrifugal extraction |
| دودجن | الصين | Rotor extraction towers and centrifugal separation | Customized extraction and scale-up |
| De Dietrich Process Systems | France and Germany | Extraction columns and mixer-settlers | Chemical and pharmaceutical processing |
| B&P Littleford | الولايات المتحدة الأمريكية | Podbielniak centrifugal contactors | Industrial centrifugal extraction |
| Technoforce | India | ARDC columns and centrifugal extractors | Continuous extraction |
| CINC Industries | الولايات المتحدة الأمريكية | Centrifugal contactors | Compact continuous extraction |
| Zaiput Flow Technologies | الولايات المتحدة الأمريكية | Membrane-based separators | Flow chemistry |
| Zhengzhou Tiei Extraction Technology | الصين | Centrifugal extractors and mixer-settlers | Industrial solvent extraction |
Top Liquid-Liquid Extraction Equipment Manufacturers
Koch Modular
Headquarters: Paramus, New Jersey, USA
Core Technology: Static and agitated extraction columns
Industries: Chemicals, pharmaceuticals, polymers, mining and petrochemicals
Koch Modular offers KARR, SCHEIBEL, rotating disc contactor, pulsed, packed, and sieve-tray columns. Its capabilities cover feed testing, hydrodynamic evaluation, equipment selection, and modular system construction. Pilot studies can identify dispersion, flooding, entrainment, and settling behavior before commercial sizing, making the company relevant to continuous systems connected with distillation or solvent recovery.
الأفضل لـ: Industrial continuous extraction projects.
سولزر
Headquarters: وينترتور، سويسرا
Core Technology: Agitated columns, packed columns and mixer-settlers
Industries: Chemicals, refining, hydrometallurgy, food and pharmaceuticals
Sulzer provides Kühni agitated columns, packed columns, mixer-settlers, and mixer-settler columns. This portfolio accommodates differential and stagewise contacting across different throughput, footprint, and settling requirements. Testing and engineering services extend from feasibility assessment to industrial deployment, supporting large separation systems that require continuous operation, capacity flexibility, and solvent recovery.
الأفضل لـ: Large-scale industrial separation systems.
Rousselet Robatel
Headquarters: Annonay, France
Core Technology: Centrifugal extractors and mixer-settlers
Industries: Pharmaceuticals, fine chemicals, food, hydrometallurgy and nuclear processing
Rousselet Robatel manufactures single-stage and multistage centrifugal extractors alongside mixer-settlers. By combining liquid contact with accelerated phase disengagement, its equipment reduces dependence on gravity settling. Laboratory, pilot, and production configurations address different capacities, particularly where short residence time, compact installation, rapid separation, or continuous treatment of heat-sensitive materials is required.
الأفضل لـ: Centrifugal extraction applications.
دودجن
Headquarters: شنغهاي، الصين
Core Technology: Rotor extraction towers and centrifugal separation
Industries: Specialty chemicals, pharmaceuticals, advanced materials and industrial purification
دودجن develops rotor extraction towers and centrifugal separation systems around feed-specific mass-transfer and hydrodynamic behavior. Engineering evaluation considers interfacial area, residence time, phase dispersion, back-mixing, and entrainment. Pilot validation supports equipment sizing and commercial scale-up, while process integration can connect extraction with washing, stripping, solvent recovery, distillation, or crystallization.
الأفضل لـ: Customized processes requiring pilot validation and industrial scale-up.
De Dietrich Process Systems
Headquarters: فرنسا
Core Technology: Extraction columns and mixer-settlers
Industries: Chemicals, pharmaceuticals, fine chemicals and nuclear processing
De Dietrich Process Systems supplies pulsed columns, KARR-type columns, and mixer-settlers for continuous processing. Materials engineering is a key consideration when corrosive solvents, acids, or high-purity requirements limit conventional construction materials. Its equipment fits projects where extraction must operate within integrated reaction, purification, solvent handling, and recovery systems.
الأفضل لـ: Chemical and pharmaceutical extraction processes.
B&P Littleford
Headquarters: Saginaw, Michigan, USA
Core Technology: Podbielniak centrifugal contactors
Industries: Pharmaceuticals, chemicals, food, minerals and biofuels
B&P Littleford manufactures the Podbielniak Contactor, a horizontal centrifugal extractor that creates countercurrent contact while accelerating phase disengagement. The design enables compact processing with short residence time and reduced solvent inventory. Applications include fermentation products, organic acids, aromatic extraction, washing, and metal recovery, subject to density difference, solids content, emulsion tendency, and stage requirements.
الأفضل لـ: High-throughput centrifugal extraction applications.
Technoforce
Headquarters: Nashik, India
Core Technology: ARDC columns and centrifugal extractors
Industries: Fine chemicals, pharmaceuticals, food, polymers and wastewater treatment
Technoforce supplies asymmetric rotating disc contactor columns and centrifugal extractors. ARDC equipment uses rotating discs for controlled mixing and calmer zones for phase disengagement during continuous countercurrent operation. Pilot facilities assist with feed testing, analytical monitoring, and scale-up, while the wider process portfolio allows integration with evaporation, drying, distillation, and crystallization.
الأفضل لـ: Continuous extraction and process intensification projects.
CINC Industries
Headquarters: Carson City, Nevada, USA
Core Technology: Annular centrifugal contactors
Industries: Chemicals, pharmaceuticals, mining, nuclear and environmental processing
CINC Industries focuses on compact centrifugal contactors for extraction, washing, separation, and reaction. Each unit combines mixing and centrifugal phase disengagement in continuous operation. Multiple contactors can form extraction, scrubbing, and stripping stages when one contact is insufficient, making the technology suitable where floor space, liquid inventory, startup time, and residence time are important constraints.
الأفضل لـ: Compact continuous liquid-liquid extraction systems.
Zaiput Flow Technologies
Headquarters: Massachusetts, USA
Core Technology: Membrane-based phase separators
Industries: Flow chemistry, pharmaceutical development and specialty chemicals
Zaiput Flow Technologies uses membrane wetting differences to separate immiscible liquid phases. Its systems enable inline workup, multistage extraction, and continuous flow processing without relying primarily on density-driven settling. Equipment selection requires careful evaluation of solvent compatibility, wettability, pressure differential, suspended solids, and fouling risk.
الأفضل لـ: Small-volume and continuous flow processing.
Zhengzhou Tiei Extraction Technology
Headquarters: Zhengzhou, Henan, China
Core Technology: Centrifugal extractors, mixer-settlers and RDC columns
Industries: Chemicals, pharmaceuticals, hydrometallurgy, fermentation and environmental processing
Zhengzhou Tiei supplies laboratory, pilot, and industrial centrifugal extractors alongside mixer-settlers and RDC columns. Its equipment covers feasibility testing, multistage extraction, washing, stripping, and commercial solvent extraction. Available configurations accommodate different capacities, while selection depends on phase ratio, solvent compatibility, density difference, feed variability, and required treatment volume.
الأفضل لـ: Centrifugal extraction and mixer-settler applications.
How Liquid-Liquid Extraction Technologies Compare
| Equipment Type | Main Strength | Main Consideration |
|---|---|---|
| Extraction Column | High continuous throughput | Hydrodynamics and back-mixing |
| Mixer-Settler | Flexible stage control | Footprint and liquid inventory |
| Centrifugal Extractor | Rapid phase separation | Mechanical complexity |
| Membrane Separator | Compact continuous operation | Feed and membrane compatibility |
No technology is universally best. Columns favor high continuous capacity, while mixer-settlers provide direct stage control. Centrifugal equipment accelerates phase disengagement but introduces rotating components. Membrane separators enable inline operation, although performance depends on wettability, pressure control, and feed cleanliness.
How to Choose a Liquid-Liquid Extraction Equipment Manufacturer
Process Compatibility
Evaluate density difference, viscosity, interfacial tension, solvent compatibility, solids content, and emulsion tendency. These properties determine whether gravity settling, centrifugal force, or membrane wetting provides a practical separation mechanism.
Extraction Performance
Compare mass transfer, phase dispersion, residence time, back-mixing, entrainment, and outlet clarity. Stronger mixing can improve solute transfer but may create smaller droplets that are more difficult to separate.
Pilot and Scale-Up Capability
Equilibrium data alone cannot predict flooding, coalescence, emulsification, or hydraulic capacity at commercial scale. A structured development pathway reduces uncertainty:
Lab Testing → Pilot Validation → Equipment Sizing → Commercial Scale-Up
تكامل العمليات
Review how extraction connects with washing, stripping, solvent recovery, distillation, evaporation, or crystallization. Poor integration can increase solvent loss, impurity accumulation, energy demand, and operational complexity.
Key Engineering Trade-Offs
Mass Transfer vs. Phase Separation
Greater dispersion increases interfacial area but can also raise entrainment and emulsion risk.
CAPEX vs. Operating Efficiency
Lower initial cost may be offset by higher solvent losses, energy consumption, maintenance, or downtime.
Throughput vs. Residence Time
Higher throughput changes phase holdup, contact time, and hydraulic loading. Capacity must therefore be evaluated together with extraction efficiency and operating stability.
Final Considerations
Selecting a liquid-liquid extraction equipment manufacturer requires evaluation of technology, feed compatibility, separation performance, scalability, and engineering support. The preferred route should reflect actual feed properties, throughput, solvent behavior, and commercial operating targets.
Pilot validation is particularly important when emulsification, feed variability, or uncertain hydrodynamics creates scale-up risk. دودجن supports extraction process engineering, pilot validation, industrial scale-up, and integration with downstream purification operations.
Discuss your liquid-liquid extraction and scale-up requirements with DODGEN.
