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What about Supercritical carbon dioxide?
The application range of supercritical carbon dioxide is very wide, and we definitely need to know its characteristics before using it, so that we can better apply it. If you are interested in this topic, then take a look together, I hope it can help some related people.
We need to know more relevant information when using supercritical carbon dioxide, and what you need to know is that supercritical carbon dioxide is the supercritical state of carbon dioxide, that is, it exceeds its critical temperature, critical pressure and critical volume state with temperature and pressure. Moreover, its density and viscosity increase with increasing pressure and decrease with increasing temperature.
Of course, the compression coefficient also changes with temperature and pressure. Under the conditions of geological storage and promotion of oil and gas exploitation, the density of supercritical carbon dioxide is generally between 200-800kg/m3, which is lower than the density of groundwater, so after injection into the underground aquifer, carbon dioxide will migrate upward under the action of buoyancy and accumulate at the high point of the structure. In fact, what we need to know when using it is that when the temperature is higher than 31.1 degrees Celsius, the pressure is higher than 7.38Mpa , it entered a supercritical state. In the geological storage of supercritical carbon dioxide, the temperature and pressure of most reservoirs have reached above the critical point, and this supercritical carbon dioxide is often stored in the geological body in a supercritical state. Here is a good manufacturer of beer on the Internet, and the company's official website has a variety of different products. Consumers rate it quite highly. And on the company's official website, there are also a lot of information about the product and shopping tips.
Simply put, supercritical carbon dioxide is a high-density injector. It has the dual properties of gases and liquids in physical properties. It is hundreds of times denser than gases and close to liquids. Solvation capacity, especially when used, certainly has the strength of conventional liquid solvents. Below the critical temperature, the gas is continuously compressed and a liquid phase appears. However, supercritical fluids are compressed only to increase their density and do not form a liquid phase, and the density and temperature of some common supercritical fluids are closely related to pressure. The density of supercritical carbon dioxide decreases with pressure and temperature. Near the critical point, density is related to pressure. It is very sensitive to temperature, and small changes in temperature and pressure can lead to sharp changes in density. In addition, its diffusion coefficient and viscosity are important parameters to measure the mass transfer capacity of supercritical fluids. Supercritical fluids are two orders of magnitude less viscous than liquids, similar to gases, and their fluidity is much greater than that of liquids. When the pressure is low, it basically remains unchanged, when the pressure increases, the viscosity increases with the increase of viscosity, and increases sharply with the increase of pressure near the critical point, and then relatively flat, supercritical carbon dioxide fluid has a better transmission rate. Properties such as density, viscosity, and diffusivity of supercritical carbon dioxide vary with temperature and pressure.
The above introduces the relevant knowledge points of supercritical carbon dioxide. If you still don't understand something, please call us for consultation. That's it for today's knowledge points, I hope it can help you. The next issue will bring more information about it.
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