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Gas hydrate kinetic analysis apparatus

A technology for gas hydrate and kinetic analysis, applied in chemical method analysis, measuring devices, and analytical materials, etc., can solve the problems of less research on intrinsic kinetic properties, achieve the effect of avoiding changes in various phases and reducing the amount of sampling

Active Publication Date: 2009-07-08
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] At present, most gas hydrate kinetic experiments use photoelectric and other means to study the morphological dynamics of the formation / decomposition process, which focuses on the study of hydrate formation / decomposition forms, while the internal kinetic properties of gas hydrate formation / decomposition Less, the present invention discloses a gas hydrate kinetic analysis device, which uses resistance, torque and gas phase component analysis to systematically study the kinetic properties of gas hydrate formation / decomposition

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0031] see figure 1 As shown, a gas hydrate kinetic analysis device includes a gas hydrate supply unit, a gas hydrate generation / decomposition unit, a kinetic analysis unit, a temperature control unit, and a data acquisition and processing unit; the gas hydrate supply unit uses The gas hydrate generation / decomposition unit is used to provide test gas to the gas hydrate generation / decomposition unit; the gas hydrate generation / decomposition unit is used to mix the gas in it with the injected experimental liquid to generate gas hydrate; the kinetic analysis unit is used for Analyzing the chemical reaction in the gas hydrate generation / decomposition unit to obtain kinetic data; a temperature control unit, which is used to control the temperature change in the gas hydrate generation / decomposition unit; a data acquisition and processing unit, which is used to collect , saving and analyzing the signals of the gas hydrate generation / decomposition unit and the kinetic analysis unit, a...

Embodiment 2

[0054] Kinetic Analysis Experiment of Gas Hydrate Decomposition

[0055] This experiment adopts the constant pressure method, and the main experimental steps are as follows:

[0056] 1) Adjust the program temperature controller 5 so that the temperature of the water bath reaches the experimental requirements, and the temperature of the high-pressure stainless steel transparent reaction kettle 7 and the gas storage tank 10 reaches the experimental temperature and is stable;

[0057] 2) Inject the experimental liquid and gas into the high-pressure stainless steel transparent reaction kettle 7 to completely generate gas hydrate;

[0058] 3) The air storage tank 10 is emptied and vacuumized, and the solenoid valve 9 is controlled by the computer data processing system 13, so that the pressure of the high-pressure stainless steel transparent reactor 7 reaches the constant pressure required by the experiment for hydrate decomposition (the pressure is lower than the phase equilibrium...

Embodiment 3

[0063] Mixed gas hydrate formation / decomposition experiment

[0064] 1) Carry out the mixed gas hydrate formation / decomposition experiments of Examples 1 and 2, and obtain the time data of each stage of the mixed gas hydrate formation / decomposition through the pressure change in the gas storage tank 10;

[0065] 2) Set the sampling time distribution according to the data, and take gas samples in the reactor during the gas dissolution / overflow stage, hydrate formation / decomposition stage, and hydrate complete formation / decomposition stage;

[0066] 3) At each stage, the gas sampling device is first evacuated, then the precision valve 29 at one end of the sampling port is opened, and the sample gas enters the sampling pipeline 28, and the precision valve 29 connected to the sample gas inlet 34 of the six-way valve 27 and the exhaust port 35 is opened , and then the gas chromatograph 15 samples, and the carrier gas carries away the sample gas through the sampling line 28 and ente...

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Abstract

The invention discloses a kinetic analysis device of gas hydrate. The kinetic analysis device consists of a pressure-stabilized gas supply unit, a gas hydrate generation / decomposition unit, a kinetic analysis unit, a temperature control unit and a data acquisition and processing unit; moreover, the device carries out research on the generation / decomposition process of gas hydrate by means of resistance, torque, and the like, and refits gas phase chromatogram, thereby reducing sampling quantity of gas phase samples and avoiding variation in each phase caused by component reduction. The kinetic analysis device realizes kinetic analysis during gas hydrate generation / decomposition and ensures comprehensive, actual and accurate kinetic data result by means of resistance, torque, blender rotating speed and gas phase chromatogram, and the like. The device can be used in kinetic analysis of mixed gas hydrate generation / decomposition and kinetic analysis and experimental research of gas hydrate added with chemical reagents. Moreover, the method and the device are simple and have convenient operation.

Description

technical field [0001] The invention relates to a gas hydrate kinetic analysis device, in particular to a gas hydrate kinetic analysis device using a mixed gas hydrate formation / decomposition kinetic analysis device and adding chemical reagents. Background technique [0002] Gas hydrate is a cage-shaped ice-like crystal compound formed by filling different gases as carrier molecules into the cage-shaped space formed by the main water molecules at a specific temperature and pressure, also known as cage-like hydrate. Among them, natural gas hydrate is widely distributed in the permafrost soil layer or the deep seabed at the continental margin. The huge resources and attractive development and utilization prospects of natural gas hydrate make it a new type of clean energy in the 21st century. At present, natural gas hydrate samples have been taken from the South my country Sea, which proves that my country has abundant natural gas resources, and its total amount is equivalent t...

Claims

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Application Information

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IPC IPC(8): G01N31/00G01N30/20G01N33/00
Inventor 李小森颜克凤陈朝阳李刚杨海建
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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