Method for producing gas hydrate and device thereof
A technology for gas hydrate and production device, which is applied to the method of chemically changing substances by using atmospheric pressure, the chemical method of reacting liquid and gas medium, chemical instruments and methods, etc. The problems of rapid and continuous production equipment and production process, low gas storage density of hydrate, complex operation process and equipment, etc., can save storage and transportation costs, improve gas separation efficiency, and have a compact structure.
Inactive Publication Date: 2012-01-18
JIANGSU POLYTECHNIC UNIVERSITY
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Problems solved by technology
However, although this type of surfactant can accelerate the hydrate formation rate, it is still unsatisfactory, and the gas storage density of hydrate is not high.
U.S. Patent US5,536,893 (announcement date: July 16, 1996) discloses a gas hydrate production device, the operation process and equipment are complex, and industrialization is difficult
In recent years, there have been many studies on gas hydrates, but a large number of documents only involve the laboratory preparation of gas hydrates, but do not involve the rapid and continuous production equipment and production processes of gas hydrates
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[0015] The gas hydrate production device adopted in the present invention is as figure 1 As shown, all parts of the device are insulated with thermal insulation materials. Water has a volume of 0.54m 3 The low temperature water tank 1 is kept at a temperature of 1-5°C, and an appropriate amount of hydrate formation accelerator is added through the dosing pipe 12. The accelerator consists of 5% cyclopentane and dodecylbenzenesulfonate with a concentration of 1200ppm in the total solution mass fraction. Sodium acid is prepared, and the mixture solution is called "rich water". The "rich water" is boosted to 8MPa with a booster pump 2, and the flow rate is 0.7L / min. The natural gas cooled to 2°C is mixed with the "rich water" in a molar ratio of 1:100 through the gas-liquid mixer 4. The bubble-like gas-liquid two-phase flow is formed through the spiral bubble generator 5, which increases the gas-liquid contact area and accelerates mass transfer. The ascending spiral coil 7 is i...
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The invention relates to a technique for efficiently, rapidly and continuously producing gas hydrate and a device thereof. The invention provides technical equipment for the promotion of gas hydrate utilization technology, and adopts a pipeline type gas hydrate continuous production device; the design of a spiral coil is adopted by a reactor body, so that the space is effectively saved; a taper hydrate generator utilizes the energy transformation of flow media to transform kinetic energy and potential energy into pressure energy, thereby accelerating the generating speed of the hydrate. The invention has the advantages of compact structure, simple method, easy operation and control as well as low cost and energy consumption.
Description
technical field [0001] The invention belongs to the technical field of gas hydrate application and storage and transportation, in particular to a gas hydrate production method and device. Background technique [0002] Gas hydrates are light gases such as: methane, ethane, propane, CO 2 、H 2 Non-stoichiometric solid crystalline substances generated by S, etc. and water at a certain temperature and pressure (generally low temperature and high pressure). [0003] The pressure order of some gases forming gas hydrates at 0°C is: H 2 S<isobutane<propane<ethane<ethylene<CO 2 <Methane<Oxygen<Nitrogen. Among them, propane gas is widely used because of its low toxicity and easy availability, and it can form hydrates at 0°C and less than 0.2MPa. Although the structure and formation conditions of hydrates are very different, if each cage of each hydrate is occupied by gas molecules, they show a striking similarity, that is, they are all composed of water wit...
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IPC IPC(8): B01J3/00B01J10/00
Inventor王树立周诗岽赵会军郑志武玉宪
OwnerJIANGSU POLYTECHNIC UNIVERSITY