A simulation experiment device and method for secondary crushing and fluidization of subsea natural gas hydrate

Abstract

The invention provides a simulation experiment device and method for secondary crushing and fluidization of submarine gas hydrate. The simulation experiment device for the secondary crushing and fluidization comprises a secondary crushing pipeline, a rotating power assembly, a particle crushing knife tackle, a material falling assembly, a crushed particle recovery device and a control system, wherein the rotating power assembly comprises a motor and a rotating shaft, the particle crushing knife tackle is connected to the rotating shaft of the rotating power assembly through a flat key, the rotating power assembly is connected with a particle crushing pipeline through a bolt and a nut, the particle crushing pipeline is welded with a round-to-square flange plate and connected with the material falling assembly through a bolt and a nut, the crushed particle recovery device is placed on a crushing pipeline outlet, and the control system is connected with and controls the motor of the rotating power assembly and the material falling assembly. The crushing method adjusts the rotating speed of the rotating power assembly and the material falling speed of the material falling assembly through the control system, circulating water is pumped, non-premixed particles in a hopper is discharged down, and an outlet recovery device recovers crushed particles.

Description

technical field [0001] The invention relates to the technical field of seabed natural gas hydrate exploitation, in particular to a simulation experiment device and method for simulating secondary crushing and fluidization of non-diagenetic hydrate solid fluidization exploitation in shallow seabed. Background technique [0002] Natural gas hydrate, also known as "combustible ice", is an unconventional energy source with high density and high calorific value. It is estimated that the total amount of global gas hydrate resources converted into methane gas is about (1.8-2.1)×10 16 m 3 , whose carbon content is equivalent to twice the total known reserves of energy sources such as coal, oil and natural gas in the world. The prospect of my country's marine natural gas hydrate resources is very broad. According to estimates by researchers from the Ministry of Land and Resources, the total resources of natural gas hydrates in the South China Sea alone have reached 65 billion tons ...

AI Technical Summary

Problems solved by technology

[0006] As a new energy source, the large-scale exploitation and transportation of natural gas hydrate is still in the exploratory stage, and natural gas hydrate is easily decomposed into natural gas under normal temperature and pressure, which obviously brings certain difficulties to the exploitation and exploration of natural gas hydrate and increases the Experimental cost

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