RU2045718C1 - Set for producing gas hydrates - Google Patents

Abstract

FIELD: production of gas hydrates used for cooling and aerating drinks, as well as in production processes of chemical and fuel industries where production and storage of solid multi-component systems are required. SUBSTANCE: set has crystallizer with cooling jacket, pipe lines for supplying water and hydrate forming gas, reservoir for preliminary saturation of liquid with gas mounted on vibrator and connected to water and gas pipe lines and hermetically connected with crystallizer. Cooling jacket is designed for supplying liquid at temperature at cryogenic level. EFFECT: enhanced efficiency. 1 dwg

Description

 The invention relates to devices that serve to produce gas hydrates, and can be used for cooling and carbonating drinks, as well as in technological processes of the chemical and fuel industries, which require the receipt and storage of solid multicomponent systems.

 A known installation for hydrates at various pressures and temperatures. It consists of the following main units: copper tube, thermostat, quartz reactor, water dispenser, separator, gas flow meter.

 The disadvantage of this device is the low miscibility of the liquid with gas, which leads to a low gas content in hydrates.

Closest to the claimed is a plant containing a mold with a cooling jacket, a drive mixer and nozzles for supplying pressure (P = 15 atm) of water and gas in a ratio of 3: 1. Hydrate formation occurs in the mold at +1 ^o C. In series with the mold, a device for draining and dosing gas hydrates and a refrigeration chamber are installed. The body of the device for draining and dosing gas hydrates is in communication with the mold with a water pipe with a control valve.

 The disadvantage of the described device is the long process of formation of gas hydrates with a low gas content in them, as well as high pressures in the process necessary for hydrate formation.

 The aim of the invention is to increase the rate of hydrate formation, increase and control the concentration of gas in a liquid, and decrease pressure in the process.

 The goal is achieved by the fact that in the device for the production of gas hydrates containing a crystallizer with a cooling jacket, pipelines for supplying water and hydrate-forming gas, according to the invention, there is provided an installation comprising a vessel for pre-saturation of a liquid with gas, mounted on a vibrator and connected to pipelines for supplying water and gas, tightly connected to the mold, while the cooling jacket of the latter is designed to supply liquid with a temperature at a cryogenic level.

 Known devices that serve to obtain gas hydrates by saturating a liquid with gas under pressure. However, the use of a vessel for preliminary saturation of a liquid with gas mounted on a vibrator connected to pipelines for supplying liquid and gas, hermetically connected to a crystallizer, into which a cryogenic liquid is supplied to a cooling jacket, was not found in the patent and technical literature to achieve these goals. On this basis, it was concluded that the claimed solution meets the sign of "significant differences".

 The drawing shows a General view of the proposed installation for producing gas hydrates.

 The installation contains a vessel 1 for pre-saturation of the liquid with gas, mounted on the vibrator 2. The liquid is supplied to the vessel through the tube 3 through the atomizer 4. The gas is supplied through the tube 5 and partially discharged through the tube 6 depending on the required ratio of gas to liquid. The gas-liquid mixture through the pipeline 7, tightly connected with the mold 8, merges into its half. The mold has a cooling jacket 9.

 The operation of the installation is as follows. A portion of gas is introduced into the vessel 1, previously filled with water. Then the vibrator 2 is turned on. At the same time gas is supplied through the tube 5. Under the influence of vibration, the liquid captures the free surface of the gas, the bubbles of which migrate to the bottom of the vessel. As the liquid is saturated with gas, when its amount reaches a certain critical level, the movement of the bubbles from the translational is converted to random, the liquid instantly turbulizes, transforming into a gas-liquid mixture, dissolving in itself the gas supplied through the tube 5. The gas content in the liquid is obtained at several orders of magnitude higher than in the prototype, the ratio of dissolved gas in a liquid can be (3: 1.6: 1.8: 1) depending on the amplitude and frequency created by the vibrator 2. The process of saturation of the liquid gas ohm is completed in 5-10 s. Next, the gas-liquid mixture is sent through pipeline 7 to the crystallizer 8, where it instantly crystallizes due to the large temperature difference of the gas-liquid mixture sent to the crystallizer and the cooling crystallizer of the cryogenic liquid. Gas hydrate is formed. The time of gas saturation of the liquid is controlled by the amount of gas supplied and the parameters of the vibroturbulation process (frequency and amplitude of oscillations). The concentration of gas in the liquid is changed by supplying gas (and exhaust gas) through the pipeline 5 and 6, which is achieved by opening and closing the valves located on the pipelines.

 The pressure in the process does not increase. This setting allows you to increase the speed of the hydrate formation process, reduce the pressure in the process and increase the gas concentration in the liquid, and, if necessary, regulate the gas-liquid ratio.

Claims (1)

 A GAS HYDRATE PLANT, comprising a mold with a cooling jacket, pipelines for supplying water and hydrate-forming gas, characterized in that the apparatus is provided with a vessel for preliminary saturation of the liquid with gas mounted on a vibrator connected to pipelines for water and gas and hermetically connected to the mold, while the cooling jacket of the latter is designed to supply liquid with a temperature at a cryogenic level.