Natural gas hydrate heat-shock reaction device

Abstract

The invention provides a natural gas hydrate heat-shock reaction device which comprises an external guide pipe. A nanometer aluminum powder conveying pipeline and a gas collecting pipeline are arranged in the external guide pipe, and igniting explosives are arranged at the front end of the nanometer aluminum powder conveying pipeline. By the device, the exploitation process of natural gas hydrate can be more flexible, and exploitation efficiency of each vertical shaft can be improved; a part of methane and hydrogen mixtures obtained through reaction can serve as fuel for a pump and a compressor after moisture is removed by pressurizing and cooling and liquid methane is obtained by being cooled to minus 162 DEG C via the nitrogen compressor. A large amount of heat produced from aluminum-ice reaction provides heat for decomposition of the natural gas hydrate, so that heat loss during pipeline conveying can be avoided, and exploration efficiency can be improved.

Description

technical field [0001] The invention relates to a mining device, in particular to a natural gas hydrate mining device. Background technique [0002] Natural gas hydrate is a solid crystalline substance formed by natural gas and water molecules under certain pressure and low temperature. The main component of natural gas in natural gas hydrates is methane. The resource has large reserves, wide distribution range, high energy density, less impurities and no pollution. Since the first discovery of natural gas hydrate in the laboratory in 1810 and the artificial synthesis of natural gas hydrate in 1888, scholars at home and abroad have been researching and exploring natural gas hydrate. So far, three crystal structures of hydrates have been found: I, II and H. The ideal molecular formula of structure I hydrate is 8M·46H 2 O, where M represents the guest molecule. The ideal molecular formula of structure II hydrate is 24M·136H 2 O, structure H hydrate ideal molecular formula...

AI Technical Summary

Problems solved by technology

The thermal shock method is to heat up the formation containing natural gas hydrate to force it to decompose. The biggest problem of the thermal shock method is the low heat utilization rate. Although microwave and electromagnetic heating have been proposed recently, the low heat utilization rate has not been fundamentally solved. The problem

[0005] Therefore, it can be seen from the existing production methods that the bottleneck restricting the commercial development and utilization of natural gas hydrates lies in how to find effective production methods that can be widely used under various gas reservoir conditions.

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