A concentric double-helix hydrate continuous reaction device

A reaction device, hydrate technology, applied in chemical/physical/physical chemical fixed reactor, gas fuel, petroleum industry, etc., can solve the problem of high energy consumption of stirred reactor, hindrance of subsequent contact between liquid and gas, shortening Hydrate induction time and other issues, to achieve continuous high-efficiency preparation, increase the gas-liquid contact area, and avoid clogging

Active Publication Date: 2021-05-14
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • A concentric double-helix hydrate continuous reaction device
  • A concentric double-helix hydrate continuous reaction device

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Effect test

Embodiment 1

[0015]The main structure of the concentric double-helix hydrate continuous reaction device involved in this embodiment includes an outer reactor 1, a central reactor 2, a motor 3, a bracket 4, a gear 5 and a magnetic transmission rod 6; A central reactor 2 is set in the reactor 1, and the central reactor 2 is driven by a motor 3; the main structure of the outer reactor 1 includes an outer cylinder 10, an outer stirring blade 11, a pressure sensor 12, a temperature sensor 13, a discharge port 14 and a ball valve 15; the outer cylinder 10 is provided with an outer stirring blade 11, the upper part of the outer cylinder 10 is provided with a pressure sensor 12 and a temperature sensor 13, and the lower part of the outer cylinder 10 is provided with a discharge port 14, and the discharge port 14 A ball valve 15 is arranged at the center; the main structure of the central reactor 2 includes a central cylinder 20, a stirring rod 21, a central stirring blade 22, a through hole 23, a l...

Embodiment 2

[0017] When the concentric double-helix hydrate continuous reaction device involved in this embodiment is used, gas is introduced from the air inlet 25 to flush the outer reactor 1 and the central reactor 2, and the air is removed. When the outer reactor 1 and the central reactor 2 When the internal temperature of the reactor reaches 1°C, the gas is fed again to make the internal pressure of the outer reactor 1 and the central reactor 2 reach 7MPa and remain constant, the motor 3 is turned on, the rotating speed is set to 30r / min, and the liquid injection port 24 is opened, and the liquid It is sprayed into the central reactor 2 in the form of micro-droplets. Under the continuous agitation of the central stirring blade 22, the gas and the micro-droplets are fully mixed and quickly generate hydrate particles. Driven by the central stirring blade 22, the hydrate particles are driven from right to The left gradually moves to the left end of the central reactor 2, enters the outer ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/20C10L3/08
CPCC10L3/08
Inventor 张国栋王飞
Owner QINGDAO UNIV OF SCI & TECH
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