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(I suppose that you mean supercritical state of fluid.)
Supercritical state of liquid-gas is a state that liquid state and gas state stop to exist at particular temperature and pressure.
There is only just fluid state which has both liquid and gas property and if you change the pressure or temperature just a bit, it will change to one of the state.
How to achieve supercritical state ?
The supercritical state is done at HIGH TEMPERATURE and PRESSURE.
For example, the famous CO2 fluid (used to separate caffeine from the coffee bean) is acquired at 304.1 Kelvin and 72.8 atm.
The supercritical state refers to a state of matter where a substance is above its critical temperature and pressure, exhibiting properties of both a gas and a liquid. In this state, there is no clear distinction between the liquid and gas phases, and unique properties such as high density and solvating power are observed. Supercritical fluids are used in various industrial processes like extraction and chromatography due to their unique properties.
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Principles of Super Critical Liquid Extraction?
Supercritical fluid extraction is a process that uses supercritical fluids, such as carbon dioxide, to extract solutes from solid or liquid samples. The main principles include the use of a supercritical fluid as the solvent, which offers benefits such as tunable solvating power, high efficiency, and minimal residue in the extracted material. The process involves applying high pressure and temperature to the supercritical fluid to reach a state where it exhibits properties of both liquids and gases, making it highly effective for extraction purposes.
Is supercritical fluid a matter?
Yes, a supercritical fluid is a state of matter that exhibits properties of both liquids and gases. It occurs when a substance is heated and pressurized above its critical point, resulting in a phase where it can diffuse through solids like a gas but dissolve materials like a liquid.
What is supercritical fluid chromatography?
Supercritical fluid chromatography is very similar to high pressure liquid chromatography (HPLC), however the mobile phase exists in a supercritical state. To refresh your memory, recall that super critical fluids exist at temperatures and pressures higher than a substances critical point. This means that the fluid acts as both a gas and a liquid. For example, a supercritical fluid may pass through substances like a gas, but also dissolve substances like a liquid. Why do supercritical fluids exist? Well, the temperature is high enough that the molecules cannot exist together as a fluid because they have too much energy to stick together. However, the pressure is too high for the molecules to have a root mean square distance sufficient enough to exist as a gas. SFC exploits this property, using a supercritical fluid to dissolve the chemical in question into the fluid, but move it quickly in the gas phase. Heavy molecules travel slower, while light molecules travel faster, thus causing separation. In addition, chiral molecules can be separated via this method.
What type of solvent is carbon dioxide?
Liquid carbon dioxide (supercritical CO2) is used as solvent.
What is the critical temperature and pressure of diesel?
The critical temperature of diesel is typically around 550°C, and the critical pressure is around 80 bar. At these conditions, diesel would exist in a supercritical state, with properties of both a liquid and a gas.
Is liquid nitrogen a supercritical fluid?
No, liquid nitrogen is not a supercritical fluid. A supercritical fluid exists at a temperature and pressure above its critical point where it displays properties of both a liquid and a gas. Liquid nitrogen remains in the liquid state at low temperatures and normal pressures.
Is Saturn mostly solid?
No. Saturn consists mostly of supercritical hydrogen and helium, in a state between liquid and gas.
Is there any application of supercritical fluid extraction in refinery?
Supercritical fluid extraction is now used in laboratories.
Principles of Super Critical Liquid Extraction?
Supercritical fluid extraction is a process that uses supercritical fluids, such as carbon dioxide, to extract solutes from solid or liquid samples. The main principles include the use of a supercritical fluid as the solvent, which offers benefits such as tunable solvating power, high efficiency, and minimal residue in the extracted material. The process involves applying high pressure and temperature to the supercritical fluid to reach a state where it exhibits properties of both liquids and gases, making it highly effective for extraction purposes.
Is supercritical fluid a matter?
Yes, a supercritical fluid is a state of matter that exhibits properties of both liquids and gases. It occurs when a substance is heated and pressurized above its critical point, resulting in a phase where it can diffuse through solids like a gas but dissolve materials like a liquid.
Why is nitrogen not used in supercritical fluid extraction?
Nitrogen has a low critical temperature and pressure, which makes it unsuitable for creating supercritical conditions required for supercritical fluid extraction. Additionally, nitrogen has a low solvent power compared to other gases like carbon dioxide, which limits its effectiveness in extracting desired compounds from samples.
What change(s) in physical state occur if carbon dioxide at 50C and 73 ATM is cooled to -78C and 73 ATM?
The carbon dioxide would change from a supercritical fluid state to a liquid state as it is cooled. At 50°C and 73 ATM, carbon dioxide is in its supercritical state, which means it possesses properties of both a gas and a liquid due to high temperature and pressure. By cooling it to -78°C while maintaining 73 ATM pressure, it would transition into a liquid state.
What is meant by supercritical andhow dose it relate to making a nuclear bomb?
Supercritical refers to a nuclear chain reaction that is accelerating. For a nuclear bomb, achieving a supercritical state is necessary to rapidly release a massive amount of energy through an uncontrolled chain reaction, resulting in an explosion. Specialized techniques and precision are used to control the timing and conditions to trigger the supercritical state in a nuclear bomb.
Where are the supercritical boilers installed in India?
Bharat Heavy Electricals Limited (BHEL) has despatched boiler columns for the first supercritical boiler, being manufactured in India. These columns will be used for installation of BHEL-built supercritical Boilers at Barh Thermal Power Project Stage-II, located about 75 kms from Patnain Bihar
What does the acronym SFIA in a refinery mean?
Supercritical Fractionation and Isomerization Area
Can a gas act as a nonpolar solvent?
Supercritical carbon dioxide is used as a non polar solvent to extract caffeine from coffee beens. Supercritical gases are not quite gases and not quite liquids but sort of in between.
What is the bump point in distillation?
My understanding is that it is due to high enthalpy in the steam that results in the formation of a vacuum bordered by steam and supercritical fluid. The expansion of this pocket will eventually become too much for the surface tension to deal with and the supercritical fluid will undergo a rapid expansion into its gaseous state. This is extremely dangerous as there is a high risk of combustion due to the rapid expansion at extreme temperatures. Hope this helps!
