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An experimental method and device for measuring the diffusion coefficient of carbon dioxide in water

A technology of water diffusion and experimental device, applied in measurement devices, instruments, scientific instruments, etc., can solve problems such as insufficient research

Inactive Publication Date: 2017-01-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently for CO 2 The experimental research on the diffusion coefficient is not enough and needs to be further strengthened

Method used

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  • An experimental method and device for measuring the diffusion coefficient of carbon dioxide in water

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Experimental program
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Effect test

Embodiment 1

[0015] Embodiment 1 utilizes pH meter to measure and carry out CO 2 The principle and implementation steps of diffusion experiment.

[0016] As shown in Figure 1, the diffusion kettle 11 is installed on the bracket 14, the pH meter probe 16 is installed on the geometric center of the lower end cover 15 of the diffusion kettle, the pressure sensor is installed on the upper end cover 9 of the diffusion kettle, and the upper end of the pressure sensor is installed There are gas injection holes 7 on the end cap, which are geometrically symmetrically distributed with the pressure sensor with respect to the center of the end cap. The pH meter probe 16 and the pressure sensor 4 are connected to the pH value display instrument 18 and the pressure display instrument 3 through wires, and then the display instrument is connected to the data acquisition system 1 through wires. The gas injection hole of the upper end cover of the reaction kettle 11 is connected with the gas cylinder 6 thr...

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Abstract

The invention discloses an experimental method and device for measuring a diffusion coefficient of CO2 in water. The experimental device adopts a fixed diffusion distance and mainly comprises a data acquisition system, a constant temperature heating system, a pH meter probe, a diffusion kettle, a pressure sensor, a temperature probe and the like, wherein the pH meter probe is installed on a lower end cover of the diffusion kettle, the pressure sensor is installed on an upper end cover, one end of the temperature probe is connected with a heating coil outside the diffusion kettle, and the other end of the temperature probe is connected with the constant temperature heating system. When an experiment is performed in the diffusion kettle, the diffusion kettle is installed on a bearing and is turned to simulate a tilted stratum, pressure is utilized to calculate initial concentration of the CO2 according to an ideal gas equation, the hydrolysis amount of the CO2 is calculated according to a pH value acquired by the data acquisition system, a fitted curve of the CO2 hydrolysis amount and time square root is drawn to obtain slope k, and the diffusion coefficient D is calculated according to a calculation model.

Description

technical field [0001] The present invention relates to CO 2 Sequestration potential technical field, is a measure of CO 2 Experimental method and apparatus for the diffusion coefficient in water, especially for CO 2 Experimental method and device for measuring diffusion coefficient parameters during storage. Background technique [0002] At present, people's demands for energy mainly rely on the burning of fossil fuels, and the reduction of greenhouse gas emissions has become the focus of human attention. China has become the world's second largest energy consumer after the United States, and it has undertaken greenhouse gas emission reduction obligations since 2013. my country's carbon emissions are increasing every year, and the emissions will soon surpass that of the United States. Proceeding from the national conditions of our country, actively develop CO 2 Underground storage research is very important. [0003] The technology of capturing, storing and utilizing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00
Inventor 张卫东任韶然吴双亮张亮李俊涛卢俞辰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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