Natural gas hydrate mining device and method based on solar energy and seawater source heat pump combined heat supply technology

Abstract

The invention discloses a natural gas hydrate mining device and method based on the solar energy and seawater source heat pump combined heat supply technology. The natural gas hydrate mining method mainly refers to a maritime floating platform, a solar energy heat-collecting unit, a seawater source heat pump unit, a solar energy generating unit, a seabed natural gas hydrate mining unit and a monitoring control unit. According to the method, abundant solar energy and seawater energy in a sea area are utilized to supply heat, and the heat serves as a basic heat source for heat injection method mining of seabed natural gas hydrates; meanwhile, power consumption devices of a compressor, an overheating device, a pump and the like in a system are supplied with the energy through solar energy generating, and thus in the method, the solar energy and the seawater energy are combined to supply the energy for mining the natural gas hydrates; and according to the natural gas hydrate mining method,the reproducible solar energy and seawater energy resources can be utilized to mine the seabed natural gas hydrate resources efficiently, the input cost of the mining heat source is reduced greatly,the process is simple, multiple benefits of the economic benefit, the environmental benefit, the social benefit and the like are achieved, and large-scale commercial mining of the natural gas hydratesis facilitated.

Description

technical field [0001] The invention belongs to the technical field of natural gas hydrate exploitation, and in particular relates to a natural gas hydrate exploitation device and method based on combined heating technology of solar energy and seawater source heat pump. Background technique [0002] Natural gas hydrate is a kind of clean energy with huge potential reserves. Its reserves are about twice the sum of the carbon content of all fossil fuels in the world, at least 1.0×10 13 Ton. How to efficiently and economically exploit huge natural gas resources from hydrate reservoirs still faces many challenges. [0003] Because the stable existence of gas hydrate requires specific temperature and pressure conditions, it is generally distributed in permafrost or seabed sediments with a water depth of more than 300 meters. If the temperature increases or the pressure decreases, the gas hydrate becomes unstable and breaks down releasing methane gas. Therefore, by breaking the...

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Problems solved by technology

[0006] In order to solve the need to consume a large amount of energy in the process of exploiting seabed natural gas hydrate by heat injection method and reduce the exploitation cost, the present invention proposes a natural gas hydrate exploitation method based on solar energy-seawater source heat pump combined heating technology

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