DEVICE FOR MEASURING THE SOLUBILITY OF SUBSTANCES AND THEIR MIXTURES IN A SUPERCRITICAL FLUID

摘要

The utility model relates to the field of heat and mass transfer, specifically to extraction processes using supercritical fluids (GFR). A device for measuring the solubility of substances and their mixtures in a supercritical fluid, contains a compressed gas cylinder, a refrigerator, a chiller, two high pressure plunger pumps, a heat exchanger with an extraction cell, two extract collectors, a throttle valve, a pressure reducing valve, a gas meter, and a system control and measurement (instrumentation). One high-pressure plunger pump with a suction pipe is connected to a cylinder with compressed gas (CO) through a refrigerator providing gas liquefaction, and a discharge pipe through a three-way valve with a common line, another high-pressure plunger pump is connected with a container for supplying a co-solvent through a three-way valve to a common line , a chiller whose refrigerant cools the refrigerator and heads of high pressure pumps, a heat exchanger having a heater and a pipe for preheating and supplying critical fluid (SCF) from the common line to the extraction cell, which is connected to the first extract collector via a throttle valve, then through a pressure reducing valve to the second extract collector, at the outlet of which a gas meter is installed. Technical result - achieving a constant predetermined pressure in the cell and eliminating multiple control of SCF flow rate due to the installation of a chiller that provides increased heat transfer performance and minimal inertia of the refrigerant temperature fluctuation, in The number of refrigeration units based on a domestic refrigerator.