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Determination method and determination system of solubility parameters of gas in liquid

A technology for dissolution parameters and measurement methods, which is applied to the analysis of materials, instruments, etc., can solve the problems of inconvenient operation, low accuracy, and inability to simultaneously measure the gas dissolution rate, etc., and achieve the effect of simple and convenient operation and strong practicability

Active Publication Date: 2013-12-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the various methods or devices for measuring solubility in the prior art can simultaneously measure the dissolution rate of gas in liquid, and the operation is inconvenient and the accuracy is low

Method used

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  • Determination method and determination system of solubility parameters of gas in liquid
  • Determination method and determination system of solubility parameters of gas in liquid
  • Determination method and determination system of solubility parameters of gas in liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Pour 146.84g of n-decane into the liquid stirred tank 2 with a volume of 623ml, seal the gas stirred tank 1 and the liquid stirred tank 2, connect the air inlet of the gas stirred tank 1 to the gas cylinder 8 containing high-pressure hydrogen, first open the valve 7, At the same time, open the air inlet valve of the gas stirred tank 1, so that the high-pressure hydrogen enters the gas stirred tank 1. After the pressure in the tank rises to about 1 MPa, the inlet valve is closed, and then the outlet valve of the liquid stirred tank 2 is opened until the pressure in the tank drops. After closing the outlet valve for normal pressure, repeat the operation three times. Afterwards, close the valve 7, pressurize the pressure of the gas stirred tank 1 to about 4MPa, and then close the inlet valve. The gas stirred tank 1 and the liquid stirred tank 2 are stirred at a stirring speed of 800 rpm, and the temperature of the tank is raised to 170 ° C. The pipeline 6 Raise the tempera...

Embodiment 2

[0063] With the method of embodiment 1, under the condition of measuring 2.5250MPa, 170 ℃, the solubility of hydrogen in n-decane and the dissolution rate in the dissolution process, the parameters and solubility calculation results in the experimental process are shown in Table 1, the dissolution rate in the dissolution process For calculation results, see image 3 .

Embodiment 3

[0065] With the method of embodiment 1, under the condition of measuring 3.5882MPa, 170 ℃, the solubility of hydrogen in n-decane and the dissolution rate in the dissolution process, the parameters and solubility calculation results in the experimental process are shown in Table 1, the dissolution rate in the dissolution process For calculation results, see Figure 4 .

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Abstract

The invention discloses a determination method and a determination system of solubility parameters of a gas in a liquid. In a preparation step, a gas container and a liquid container which are communicated with each other are arranged, the temperature inside the two containers is always maintained the same, a gas of a first molar weight is filled into the gas container so as to achieve a first gas pressure, a liquid of a first quality is filled into the liquid container, and the gas container and the liquid container are respectively sealed; in a detection step, the gas in the gas container is filled into the liquid container, when the gas pressure in the liquid container reaches to a second gas pressure, the gas filling is stopped, gas pressure variations in the liquid container are detected and recorded, a fourth gas pressure in the gas container after the gas filling is stopped is obtained, and when the gas pressure in the liquid container keeps constant, a third gas pressure in the liquid container and variation time from the second gas pressure to the third gas pressure are obtained; so that the solubility and dissolution rate of the gas in the liquid can be accurately calculated.

Description

technical field [0001] The present invention relates to the field of measuring the dissolution parameters of gas in liquid, in particular, to a method and system for measuring the dissolution parameters of gas in liquid, and more particularly, to a method capable of simultaneously measuring the dissolution of gas in liquid. Determination methods and assay systems for rate and solubility. Background technique [0002] The dissolution parameters of gas in liquid medium, especially the solubility and dissolution rate are important parameters for the design and development of multiphase reactors such as gas-liquid, gas-liquid-solid, etc. In chemical design and production, separation processes such as distillation Unit operations such as absorption and absorption require corresponding solubility and dissolution rate data. In the process of heterogeneous reactions, the dissolution and diffusion of gases in liquids play an important role in the results of catalytic reactions. For ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/00
CPCG01N7/00
Inventor 刘锋李明丰褚阳李会峰聂红
Owner CHINA PETROLEUM & CHEM CORP