IFLUIDTEC - Model SWE -Subcritical Water Extraction System
The Subcritical Water Extraction System (SWE) is an advanced extraction technology that operates at temperatures between 100 and 374 degrees Celsius, under pressures high enough to maintain water in its liquid state. This method leverages water's unique properties, such as its high dielectric constant and polarity, along with a significant reduction in permittivity and surface tension with temperature increase, to efficiently extract polar materials from various substrates. Such systems are advantageous for eco-friendly and safer chemical processing. The system contains main components like an extractor, plunger pump, evaporator, and vacuum pump, installed within a stainless steel framework. These features enable a sequence of procedures, including leaching and solid-liquid separation, to extract target compounds effectively. SWE is an appealing choice for applications requiring efficient extraction under subcritical water conditions, offering reduced environmental impact and improved safety.
Overall performance of the Subcritical Water Extraction System
Subcritical Water Extraction System (shortened as SWE) is a new and powerful technique that extracts at temperatures between 100~374℃ and pressure high enough to maintain the liquid state (Fig.1). water has unique properties like a disproportionately high boiling point for its mass, a high dielectric constant, and high polarity. When the temperature rises, there is a marked and systematic decrease in permittivity, an increase in the diffusion rate, and a decrease in the viscosity and surface tension. Thus, more polar target materials of high solubility in water are extracted most efficiently at lower temperatures and at ambient conditions
This project is based on subcritical water, at a certain temperature and pressure, the pretreated raw material is loaded into the extractor, and the system is successively subjected to leaching, solid-liquid separation, evaporating, etc. process. Finally, get target ingredients.
Evaporation Condition Range of Subcritical Water Extraction System
- Extracting temperature : 120℃-200℃
- Extracting pressure : ＜2.5MPa
- Vacuum degree : -0.95
- Power : AC380V/ 50Hz
- Room temperature : -10~45℃
- Usewater as an extraction solvent is safe, non-toxic, non-flammable, and environmentally friendly.
- Water is easily and commonly available and costs very
- The better diffusivity of the solvent shortens extraction time.
- Since water is no pollution, reduces effluent reprocessing costs and eliminates VOC (volatile organic compound) emissions.
- Obtained extracts are safe, have no trace of any toxic solvents.
- There is no residual content of potentially toxic solvents in the obtained extracts.
- Transport costs linked to solvent supply and recycling are considerably reduced or even eliminated.
- SWEsubcritical water extraction is applicable for the extraction of low-polar as well as non-polar compounds.
This process thus clearly corresponds to requirements for safer, more eco-protective chemistry.