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Experiment method and experiment device for decomposing hydrate

A technology for hydrate decomposition and experimental methods, which is applied in the field of hydrate decomposition experimental methods and experimental devices, and can solve problems such as low mining efficiency

Active Publication Date: 2015-09-09
INST OF MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

Internationally, in the process of gas hydrate trial production, depressurization and heat injection technologies are routinely used to mine hydrates, but the production efficiency of the above-mentioned technologies is very low

Method used

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  • Experiment method and experiment device for decomposing hydrate

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] see figure 1 , the present invention provides a kind of hydrate decomposition experimental method, comprises the following steps:

[0023] Step 1, put the hydrate sediment particles into the filling pipeline 1, and then turn on the constant speed and constant pressure pump 2 to push the piston 3 at a constant speed and pressure, so that the hydrate sediment particles in the stainless steel filling pipeline continuously flow to the pressure chamber 4 Internal feeding, while opening the water supply system 5 to spray high-speed and high-pressure water jets into the pressure chamber 4, the temperature of the water is between 5°C and 30°C, and the water flow speed is proportional to the propulsion speed of soil particles to ensure water and hydrate deposits The volume mixing ratio of the particles is above 7:3; taking the filler pipe diameter as 4cm, the piston advancing speed as 0.3m / s, and the jet opening diameter as 5mm as an example, the speed of spraying water into the...

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Abstract

The invention discloses an experiment method and an experiment device for decomposing hydrate. The method comprises the following steps: loading hydrate sediment particles into a packing pipeline, pushing into a pressure chamber and spraying water into the pipeline, wherein the ratio of the water velocity to the advance velocity of the hydrate sediment particles has to ensure that the volume mixing ratio of water to the hydrate sediment particles is 7 to 3 or above; mixing the hydrate sediment particles in the pressure container with water to promote decomposition of hydrate; simultaneously measuring the temperature and pressure distribution in the pressure chamber; after the hydrate sediment particles in the pressure chamber are decomposed, enabling the gas and water to flow up to the outside through a filter screen; precipitating soil particles to the bottom of the pressure chamber, recording the quantity of the gas, water and soil particles; after decomposing of the hydrate sediment particles is finished, sucking the soil particles out of the pressure chamber; pulling a piston out of the pipeline and refilling the hydrate sediment particles; and repeating the steps to finish the experiment of decomposing the hydrate sediment particles in a way of mixing with water.

Description

technical field [0001] The invention relates to natural hydrate mining technology, in particular to a hydrate decomposition experimental method and experimental device. Background technique [0002] Natural gas hydrate is an unconventional energy resource with huge reserves and clean energy, and it is also one of my country's strategic energy sources. Internationally, in the process of gas hydrate trial production, depressurization and heat injection technologies are routinely used to mine hydrates, but the production efficiency of the above-mentioned technologies is very low. Contents of the invention [0003] The invention provides a hydrate decomposition experiment method and an experiment device, which are used to overcome the defects in the prior art and improve the efficiency of hydrate exploitation. [0004] The present invention provides a kind of hydrate decomposition experiment method, comprises the following steps: [0005] Step 1, put the hydrate sediment par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
Inventor 张旭辉鲁晓兵王淑云赵京王爱兰
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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