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A new device and method for rapid and continuous generation of hydrates on trays

A technology of hydrates and trays, applied in feeding devices, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as storage difficulties, slow hydrate formation steps, and limited gas-liquid interface mass transfer, etc., to achieve Enhanced self-cleaning ability, stable impact-resistant mechanical properties, and reasonable device structure design

Active Publication Date: 2021-05-28
ZHENGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, as far as the current research status is concerned, the rapid synthesis of natural gas hydrate is still immature. The main problems hindering the commercialization of this technology are the slow formation of hydrates and the difficulty of storage.
The techniques used to prepare gas hydrate mainly include static contact, stirring, bubbling, etc., but the techniques used to prepare gas hydrate have their own advantages and disadvantages. Among them, in the stirred reactor, as the hydrate continues to grow, the gas- The liquid-solid three phases cannot be kept well mixed, limiting the mass transfer at the gas-liquid interface

Method used

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  • A new device and method for rapid and continuous generation of hydrates on trays
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  • A new device and method for rapid and continuous generation of hydrates on trays

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Embodiment 1

[0030] Such as figure 1 , figure 2 , image 3 and Figure 4 A new type of rapid and continuous hydrate generation device with trays is shown, including a reactor, the reactor includes an inner cylinder 2 and an outer cylinder 1, the inner cylinder 2 is the hydrate formation zone, and the outer cylinder 1 zone is the hydrate Aggregation and separation areas. A circulating cooling device 12 is arranged outside the inner cylinder 2, a sieve plate 5 is installed between the inner cylinder 2 and the outer cylinder 1 inclined toward the outer cylinder 1, and a circulating water outlet and a discharge port 16 are arranged at the bottom of the outer cylinder 1, and the discharge port 16 is located on the sieve plate 5 above.

[0031] An inner jacket is arranged on the outer side of the 2 walls of the inner cylinder, and the inner jacket is equipped with a circulating cooling liquid. The circulating cooling liquid inlet and the circulating cooling liquid outlet of the inner jacket...

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Abstract

A new type of rapid and continuous hydrate generation device with trays, including a reactor, the reactor includes an inner cylinder and an outer cylinder, and a sieve plate inclined toward the outer cylinder is arranged between the inner cylinder and the outer cylinder; a gas outlet is arranged on the top of the outer cylinder , the bottom is provided with a circulating water outlet and a discharge port, wherein the discharge port is located above the sieve plate; the inner cylinder is a cylindrical structure with upper and lower openings, and a gas distributor and a water jet are arranged under the bottom of the inner cylinder ; Several layers of trays are arranged vertically along the axial direction of the inner cylinder. At the same time, the invention also discloses a method for preparing hydrate using it. The invention applies the three-dimensional mass transfer tray to the formation of hydrate for the first time, which not only accelerates the reaction, but also conducts mass transfer between the gas-liquid two-phase on the three-dimensional tray, and realizes the full turbulent renewal of the gas-liquid-solid three-phase interface ; Effectively solve the two major problems of rapid renewal of gas, liquid and solid three-phase interface and rapid removal of hydration reaction heat in hydrate formation.

Description

technical field [0001] The invention belongs to the technical field of natural gas hydrate preparation, and in particular relates to a novel device and method for rapid and continuous generation of hydrate by trays. Background technique [0002] Hydrate is a special kind of encapsulation compound: it is a non-stoichiometric compound formed by enveloping guest molecules in cage-shaped cavities formed by hydrogen bonds between water molecules under certain temperature and pressure conditions. The guest molecules mainly include some small molecular gases (H 2 、CH 4 , N 2 , CO 2 、C 2 h 4 、C 2 h 6 etc.) and some non-gas molecules [bromomethane (CH 3 Br), tetrahydrofuran (THF), cyclopentane (CP), tetrabutylammonium bromide (TBAB), etc.]. At present, the most researched is gas hydrate. Natural gas has many components, the main component of which is methane gas. As a cost-effective energy source, methane hydrate has received extensive attention. Under standard conditions, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/24C10L3/10B01J4/02B01J19/00
CPCB01J4/02B01J19/0013B01J19/0053B01J19/006B01J19/249B01J2204/002B01J2204/007B01J2219/00103B01J2219/2456B01J2219/247B01J2219/2474C10L3/108
Inventor 白净谢庚彪甄翔常春李攀
Owner ZHENGZHOU UNIV
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