What is supercritical co2 extraction machine
The supercritical extraction system can provide an accelerated, multi-sample tank supercritical fluid extraction (SFE) system. It is a faster, greener, and more selective alternative system for extracting analytes from a wide range of sample matrices, no matter you The work flow is whether to enrich the target analyte for analysis purposes, remove useless substances from the product, or collect valuable essential oils from natural products. The supercritical extraction system is currently an effective extraction tool.
The supercritical extraction system extracts samples from up to 10 extraction kettles in a semi-automatic manner. Compared with traditional extraction systems based on hydrocarbon solvents, it can reduce operating costs. Supercritical CO2 is non-toxic, non-flammable and environmentally friendly. A green alternative to normal phase solvents. The supercritical extraction system uses CO2 as the main solvent, so purification laboratories looking forward to achieving energy saving and environmental protection favor it, so that the time and money spent on solvent purchase and waste disposal are greatly reduced. This is of great benefit to scientific research and the environment in which we live.
The supercritical extraction system can provide seamless batch purification, and automatically realize the improvement of laboratory efficiency and turnaround time by substantially eliminating solvent handling and cleaning, using high-pressure CO2 as the main mobile phase, resulting in faster equilibrium, lower pressure drop, and solvent reduction And lower cost per sample. This method has a mild effect on the stationary phase, is reproducible, and can be applied to a variety of compounds. The system can also be configured for UV guided purification.
The general process of a supercritical extraction system is a combination of extraction and separation processes. Supercritical CO2 refers to a compressible high-density fluid above the critical temperature and critical pressure (called the critical point). It is the fourth state in general chemically speaking except for the three states of gas, liquid and solid. Its intermolecular force is very small, similar to others, but the density is very large, close to liquid, so it has two properties of gas and liquid between gas and liquid, and has both solubility and gas fluidity. Its transmission The mass velocity is much higher than that of ordinary liquids, and the diffusion coefficient is between liquid and gas, which has better permeability.
The traditional separation method used in the supercritical extraction system refers to the use of the affinity between the solvent and each solute, that is, the difference in solubility to achieve extraction; distillation uses the difference in the volatility of each component in the solvent. extraction. Carbon dioxide supercritical extraction is a "green" extraction technology. This technology uses supercritical fluid extraction operations to achieve the separation of useful substances in plants to obtain pure extracts, non-toxic, no residual components, and can be realized One machine is multi-purpose. The supercritical extraction system mainly includes: extraction kettle, separator, CO2 storage tank, heat exchanger, rectification column, etc. The extraction kettle is the core equipment.
