Experimental simulation device for solid-state fluidized exploiting of ocean natural gas hydrate

Abstract

The invention discloses an experimental simulation device for solid-state fluidized exploiting of ocean natural gas hydrate and particularly provides the experimental simulation device for the solid-state fluidized exploiting of the ocean natural gas hydrate, which is applied to the field of ocean natural gas hydrate experiments. The experimental simulation device for the solid-state fluidized exploiting of the ocean natural gas hydrate, provided by the invention, can be used for simulating relations among a flowing pattern, a phase change, a decomposition speed and the like when hydrate slurry flows through conveying pipelines in a solid-state fluidized exploiting process, and a flowing speed, a temperature and pressure; and the experimental simulation device comprises a horizontal circulating reaction experiment pipeline, a vertical circulating reaction experiment pipeline and a hydrate preparation and treatment system. The pressure is adjusted for a plurality of times and voltage is adjusted for a plurality of times, and different seawater depths and seawater temperature conditions are simulated; and the relations among the flowing pattern, the phase change, the decomposition speed and the like when the hydrate slurry moves and flows in a vertical pipeline and a horizontal pipeline in the solid-state fluidized exploiting process, and the flowing speed, the temperature, the pressure and a crushing grain diameter of the hydrate are simulated.

Description

technical field [0001] The invention relates to an experimental simulation device for solid-state fluidized exploitation of marine natural gas hydrate, in particular to an experimental simulation device for solid-state fluidized exploitation of marine natural gas hydrate used in the field of natural gas hydrate experiments. Background technique [0002] Natural gas hydrate is a non-stoichiometric cage-like crystalline substance produced by water and natural gas under high pressure and low temperature environment. It is a high-density, high-calorific value unconventional energy source, mainly distributed in oceans and permanent lands with water depths greater than 300 meters. In tundra deposits, the amount of marine natural gas hydrate resources is more than 100 times that of land tundra. The exploitation of marine natural gas hydrate has attracted much attention. Natural gas hydrate is generally considered to be the most potential alternative energy source in the 21st century...

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Problems solved by technology

[0003] At present, the laboratory researches on natural gas hydrate production methods are mostly focused on the depressurization method, heat injection method, chemical agent injection, etc. There are few experimental studies on solid-state fluidized production methods, but the existing experimental equipment cannot simulate hydrate slurry The relationship between the flow form, phase state change, decomposition rate, e

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