Device and method for continuously preparing blocky combustible ice

Abstract

The invention discloses a device and a method for continuously preparing blocky combustible ice, and relates to the technical field of preparation of combustible ice. The device comprises a water inlet pipe, a gas inlet pipe, a vacuum pump and a reactor, wherein the water inlet pipe is communicated with an inner cavity of the reactor sequentially by means of a booster pump, a precooling system anda high-pressure atomizer; the gas inlet pipe is communicated with the inner cavity of the reactor by means of a gas booster pump; the vacuum pump is communicated with the inner cavity of the reactor;a cavity is arranged on the outer surface of the reactor; the cavity of the reactor is internally and fully filled with circulation cooling water. The device and the method have the beneficial effects that the synthesis of the combustible ice can be continuously carried out in the reactor, and the system does not need to be stopped when the synthesized combustible ice is taken out; the synthesized combustible ice is molded by one step by means of a compacting device, the natural gas saturation is high, and the gas storage capacity per unit volume is high; the synthesized blocky combustible ice is good in self-protection effect, and can be used for long-distance transportation of natural gas; the device is not only suitable for the combustible ice, but is also suitable for synthesis of other hydrates such as a carbon dioxide hydrate.

Description

technical field [0001] The invention relates to the technical field of preparation of combustible ice, in particular to a continuous preparation device and a preparation method of block combustible ice. Background technique [0002] Natural gas hydrate (combustible ice) is a crystalline cage substance formed by natural gas and water under certain temperature and pressure conditions. Generally speaking, 1 cubic meter of combustible ice can store 150-180 cubic meters of methane gas, which has a high energy density. Because combustible ice has the characteristics of simple preparation technology, stable performance, and safe storage, it has good industrial prospects in natural gas storage and transportation. At present, the main problem limiting the application of combustible ice technology is that the rate of combustible ice formation is slow and the saturation is low. Because the formation of combustible ice has to go through the stages of gas dissolution, crystal nucleatio...

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Problems solved by technology

[0005] Although the above combustible ice synthesis technology can realize the rapid synthesis of combustible ice, however, the generated combustible ice is mostly in the form of slurry, which cannot realize continuous preparation

The generated combustible ice can only be taken out after the reaction is completed and the device is opened, which cannot meet the continuous preparation of solid combustible ice under high pressure.

These shortcomings have greatly hindered its application in natural gas storage and transportation technology

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