Gas-liquid-liquid equilibrium data measurement device

Abstract

The invention discloses a gas-liquid-liquid equilibrium data measurement device. An equilibrium still comprises three circulation loop structures for accelerating the circular mixing of fluid. The liquid phase in a hating still is homogenized by an ultrasonic homogenizer for improving the mass transfer rate and rapidly achieving the equilibrium. The separation is performed through stirring and heating. A liquid-liquid split phase tube is arranged in a gas-liquid separation chamber, so the liquid-liquid split phase experiment condition is the same as the gas-liquid equilibrium condition. The still is used for performing gas-liquid-liquid equilibrium measurement; gas-liquid-liquid three phase samples accurately representing gas-liquid-liquid equilibrium components can be obtained, time consumption is low, the equilibrium components and equilibrium temperature are accurately measured, and the experimental operation is simple and convenient.

Description

technical field [0001] The invention relates to the field of thermodynamic data measuring devices, in particular to a three-cycle ultrasonic gas-liquid-liquid balance device for measuring gas-liquid-liquid balance data under equal pressure conditions. Background technique [0002] The gas-liquid-liquid equilibrium data are the basis of heterogeneous distillation technology, computer simulation calculation, physical property estimation and subsequent distillation process and distillation column design. In the current industrial situation where heterogeneous azeotropic distillation technology is widely used, it is extremely important to obtain accurate gas-liquid-liquid equilibrium data. For the calculation of gas-liquid-liquid equilibrium, although there are many theoretical models that can be used today, their accuracy and versatility are still quite limited, and experimental data must be used to verify them before use. At present, the experimental measurement method is sti...

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Problems solved by technology

[0004] 1. The traditional gas-liquid balance tank generally does not have a stirring function, and the two separated liquid phases cannot be fully mixed evenly during the gas-liquid-liquid balance experiment. phase balance

Therefore, the gas-liquid-liquid balance data cannot be accurately determined

[0005] 2. Although some traditional equilibrium kettles are equipped with a stirrer to improve the mass transfer of the liquid phase, it also brings the problem of non-equilibrium vaporization: non-equilibrium gas phase is generated during stirring, and the non-equilibrium gas phase is mixed into the gas phase sample, which affects the accuracy of the measurement results.

[0006] 3. The traditional gas-liquid balance kettle does not have a phase separator for measuring liquid-liquid balance. To measure gas-liquid-liquid balance, only a mixed liquid phase sample representing the total composition of the liquid phase can be obtained, which cannot meet the actual research and application requirements.

If a liquid-liquid equilibrium kettle is used for measurement, the measurement conditions cannot be guaranteed to be the same as those of gas-liquid equilibrium

[0007] The above problems lead to difficulties in the determination of gas-liquid-liquid balance. At present, there are few related reports in China, and the design and invention of gas-liquid-liquid balance kettle is still blank.

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