Static reinforced rapid continuous generation device and static reinforced rapid continuous generation method for natural gas hydrate

Abstract

The invention discloses a static reinforced rapid continuous generation device and a static reinforced rapid continuous generation method for a natural gas hydrate. The device comprises a feed liquidtank, a reactor and a refrigeration system thereof, a temperature control system and a pressure control system, a natural gas buffer tank, a compressor, a hydrate storage tank as well as pipelines andvalves for connecting the components. The method comprises the following steps: water and an accelerator are fed into the feed liquid tank, and are mixed and prepared into an aqueous solution; the aqueous solution enters from the top of the reactor; liquid flows down along the inner wall of the reactor in a film shape under the action of a liquid uniform distributor in the reactor and is subjected to heat exchange with the inner wall of the reactor in the flowing process, so that a liquid film is distributed along the axial temperature of the reactor in a gradient form; natural gas is introduced from the bottom of the reactor and makes countercurrent contact with the liquid film to form a hydrate film; the hydrate film separates from the reactor wall under the action of a blade in the reactor and forms hydrate slurry with the solution; the hydrate slurry flows into a hydrate storage tank. The static reinforced rapid continuous generation device and the static reinforced rapid continuous generation method disclosed by the invention have the advantages of simple preparation method and device, rapid generation of the natural gas hydrate, high heat transfer efficiency and low energy consumption.

Description

technical field [0001] The invention belongs to the field of petroleum engineering, and in particular relates to a device and method for statically intensified rapid and continuous generation of natural gas hydrate. technical background [0002] Gas hydrates are ice-like crystals composed of cages of water hydrogen bonds surrounding gas molecules such as methane, carbon dioxide or other hydrocarbons. Natural gas can be stored by combining natural gas with water or a solution to form gas hydrate. Natural gas hydrate has a high gas storage density. A unit volume of natural gas hydrate can store 180 volumes of natural gas. The conditions for the formation of natural gas hydrate are simple. And the pressure can be controlled under the condition of hydrate formation. Therefore, using the hydrate method to store and transport natural gas has extremely high economic value and application potential. [0003] The natural gas hydrate formation process is an exothermic process. If th...

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Problems solved by technology

[0004] Based on the above problems, in order to solve the problem that the heat cannot be removed in time during the hydrate formation process, the present invention provides a device and method for statically enhanced rapid and continuous generation of natural gas hydrate, which can quickly and efficiently remove the heat generated during the hydrate formation process , realize the continuous and efficient generation of natural gas hydrate, and use separable natural gas hydrate storage tanks to store and transport the generated hydrate

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