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Supercritical Fluid (SCF) Production Service

Supercritical fluids are fluids that behave without any interfaces or deliquification above critical temperature and pressure as well as being physically and chemically distinct. This further assists in making SCF and chemical engineering green techniques rather efficient. Because of advanced technology, experienced staff, and strict quality measures, CD BioSciences-GreenChemistry ensures that clients produce supercritical fluid.

Introduction of Supercritical Fluid

A fluid whose temperature and pressure are above a critical point is called a supercritical fluid. The density of supercritical fluid is two orders of magnitude greater than that of general gas and is similar to that of liquid. Its viscosity is smaller than liquid, but the diffusion speed is faster than liquid, so it has better mobility and transfer performance.

Table 1 Comparison of liquids, gases, and supercritical fluids.

Density (kg/m3) Viscosity (µPa∙s) Diffusion coefficient (mm²/s)
Gases 1 10 1-10
Supercritical fluids 100-1000 50-100 0.01-0.1
Liquids 1000 500-1000 0.001

Characteristics of Supercritical Fluids

Zero Surface Tension

Supercritical fluids exhibit zero surface tension characteristics, meaning they lack the distinct phase boundaries that exist in traditional liquids and gases.

Solubility and Diffusion

Supercritical fluids have both liquid and gas properties. At the same time, changes in pressure and temperature can regulate the solvency of supercritical fluids.

Environmentally Friendly

Supercritical fluids are usually made of environmentally friendly substances such as carbon dioxide, which reduces the use of toxic solvents and is more environmentally friendly.

Our Professional Services

CD BioSciences-GreenChemistry utilizes advanced supercritical fluid technology to convert substances into supercritical fluids with unique properties by precisely controlling temperature and pressure conditions. Our production services include full support from design to engineering implementation to ensure stability and consistency in product quality.

Here is the process of producing supercritical fluid at our facility:

  • Purification. We use filtration devices and activated carbon, molecular sieves, or other adsorbent materials to remove organic impurities and water from a fluid. Afterward, operations such as distillation as well as chemical washing are used to fully purify the fluid.
  • Compression. We use pressure-controlled compressor systems to compress the purified fluid above its critical pressure.
  • Heating. The compressed fluid is heated to a temperature above its critical temperature. The pressure is maintained while heating to enter a supercritical state.
  • Storage and Transportation. The supercritical fluid that has entered the supercritical state is transported to a specific storage vessel. Under these conditions, it maintains a supercritical state.

Chemical structure of carbon dioxide.

Supercritical CO2 Production Service

Supercritical CO2 is a fluid that exists at conditions above its critical temperature (31.1°C) and critical pressure (73.8 bar), and is used in a wide range of applications such as extraction, chemical reactions, materials processing, and environmental engineering. In the production of supercritical CO2, we use precise pressure and temperature control to extract pure CO2 and optimize each stage of operation to ensure high and consistent product quality.

Advantages of Services We Offer

  • We are equipped with advanced equipment and facilities to realize an efficient and safe supercritical fluid production process.
  • We have a professional technical team to provide custom supercritical fluid production services.
  • We emphasize green production processes to ensure that sustainable development requirements are met.
  • We have a comprehensive after-sales service system to provide continuous technical support and service to clients.

CD BioSciences-GreenChemistry provides supercritical fluid production services centered on efficiency, environmental protection, and innovation to meet the needs of different industries. Our services help clients effectively address green challenges and promote sustainable development. Please feel free to contact us to explore more opportunities for cooperation and jointly promote the progress of green technology.

Reference

  1. Márquez A, Erramuspe I, et al. Regeneration of spent desiccants with supercritical CO2 [J]. Industrial & Engineering Chemistry Research. 2024, 63(49): 21154-21157.

Our products and services are for research use only and cannot be used for any clinical purposes.