A concentric double-helix hydrate continuous reaction device

Abstract

The invention belongs to the technical field of natural gas hydrate production and application, and specifically relates to a concentric double-helix hydrate continuous reaction device. The main structure includes an outer reactor, a central reactor and a motor. The outer reactor is covered with a central reactor. The central reactor is driven by a motor. The central reactor and the outer reactor are combined in a coaxial form, installed on the bracket, and driven by the same motor. When the central stirring blade rotates and stirs, it can increase the gas-liquid contact area and increase the The degree of diffusion of the micro-droplets promotes the formation of hydrate, and transports the generated hydrate particles from right to left. The hydrate particles enter the outer reactor through the through hole at the left end of the central reactor, and pass through the outer spiral stirring blade. Rotating and stirring, conveying from left to right to discharge from the discharge port. During this process, the spiral conveying of the central reactor and the outer reactor prolongs the conversion time and further strengthens the conversion of the generated hydrate particles.

Description

Technical field: [0001] The invention belongs to the technical field of natural gas hydrate production and application, in particular to a concentric double-helix hydrate continuous reaction device. Background technique: [0002] As a clean energy source, natural gas hydrate has the obvious advantages of huge reserves and environmental friendliness. However, the harsh mining environment limits the application of natural gas hydrate mining. In recent years, natural gas hydrate has also shown unique advantages and broad application prospects in gas storage, seawater desalination, refrigeration, and gas separation. Based on natural gas hydrate as a way of storing and transporting natural gas, it has a high gas content , convenient storage and transportation environment, and high safety factor in the transportation link, it has been identified as a new type of natural gas storage and transportation method and has received widespread attention. However, the growth environment of...

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Problems solved by technology

[0004] Among them, stirred reactors and spray reactors are widely used due to their advantages in improving gas phase mass transfer. Stirred reactors can increase the gas-liquid disturbance in the device, increase the gas-liquid contact area, and accelerate the gas in the liquid. Therefore, the stirred reactor consumes relatively more energy, and within a certain speed range, increasing the stirring speed has a positive effect on the formation rate of hydrates. greater impact, but the promotion effect on hydrate formation is limited when the stirring speed is too high, and it also increases the operating cost

The spray reactor sprays mist-like micro-droplets to the gas phase through the nozzle installed on the top of the device to increase the gas-liquid contact area, thereby promoting the rapid formation of hydrates. Since the reaction heat in the gas phase is easier to evacuate, it is not necessary to The accumulation of heat of reaction will affect the formation of hydrates. However, after the hydrates are formed, they will accumulate on the surface of the droplets and hinder the subsequent contact between the liquid and the gas. Therefore, the requirements for the spraying equipment are very strict. The sprayed micro-liquid Different droplet diameters will directly affect the gas storage rate of hydrates

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