Seabed combustible ice exploiting system

Abstract

The invention discloses a seabed combustible ice exploiting system, and solves the problems of natural disasters and pollution in the exploiting process. The seabed combustible ice exploiting system is characterized by comprising a drilling well, a pipeline system, a camera system, a control system, a gas concentration sensor, a gas-liquid separator, a gas collecting device, a micro-interface generator and a mixer main body. The micro-interface generator generates micro-bubbles and / or micro-droplet emulsion required by exploitation; then, the micro-bubbles and / or micro-droplet emulsion are / isinjected into the mixer main body and fully mixed with gas or liquid in the mixer main body for reaction; a final product is conveyed to a seabed combustible ice layer through the pipeline system; andcombustible ice is decomposed to be in a liquid state or a solid state to realize exploitation. Meanwhile, in order to avoid seabed landslide or explosive pressure release after the combustible ice exploitation, carbon dioxide is converted into carbon dioxide hydrates through the micro-interface generator and the mixer main body after the exploitation, and the carbon dioxide hydrates are conveyedto the seabed to occupy the original space of the combustible ice.

Description

technical field [0001] The present disclosure relates to the field of natural gas hydrate mining, in particular to a seabed combustible ice mining system. Background technique [0002] Combustible ice is distributed in deep-sea sediments or permafrost in land areas, and is an ice-like crystalline substance formed by natural gas and water under high-pressure and low-temperature conditions. At present, the proven resources of combustible ice in the world are equivalent to twice the total carbon of traditional fossil fuels, and its natural gas content is 60 times that of natural gas resources, which has great mining value. Because the formation conditions of combustible ice are high pressure and low temperature, once the pressure is lost or the temperature rises, the combustible ice will turn into gas. Using the characteristics of combustible ice decomposing when the temperature rises, it will be decomposed into natural gas vapor from solid state and then transported to the gro...

AI Technical Summary

Problems solved by technology

On the one hand, ethylene glycol is expensive, and the cost of commercial exploitation is high. On the other hand, the treatment of ethylene glycol after use is complicated, and a little carelessness will cause great environmental pollution.

[0004] At the same time, combustible ice is in the form of stable solid crystals on the seabed. If it is decomposed simply by "pyrolysis", there may be a huge gas reserve under the combustible ice layer, which is likely to cause submarine landslides or explosive pressure releases, resulting in Loss of equipment and personnel

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