Gas dehumidifying device with controllable supersonic speed of shock wave

Abstract

The invention relates to a gas dehumidifying device with a controllable supersonic speed of a shock wave. The air current generates strong rotation when passing a guide vane grid, swells and accelerates to a supersonic speed through a contractile annular channel; the tail end of a central worm is a compression region of the shock wave, and in the compression region, the air current of the supersonic speed decelerates to a subsonic speed through the compression of an oblique shock wave and a normal shock wave; liquid drops continuously grow in the subsonic speed section, move to the outer side of a pipeline under the action of the centrifugal force, and finally enter a liquid-collecting chamber to be discharged by a liquid outlet; while the dry gas enters an exhaust chamber and is discharged by an air outlet. In the invention, the compression region of the shock wave is designed, and the growth region of liquid drops is divided into the supersonic speed region and the subsonic speed region, and the total length of the pipeline is effectively shortened by optimizing the length of the two parts, thereby the loss of frictional resistance caused by the interaction of the air current and the pipeline is reduced; the shape of shock wave in the compression region of the shock wave are designed as the oblique shock wave and the normal shock wave, thereby the strength of a single shock wave is weakened, the loss of the resistance of the shock wave is reduced, and the separation of boundary layers induced by the strong shock wave is avoided.

Description

technical field [0001] The invention relates to the technical field of gas dehumidification, in particular to a shock wave controllable supersonic gas dehumidification device for removing water and heavy hydrocarbons in the field of natural gas processing. Background technique [0002] Natural gas is an efficient and clean energy source. However, the extracted natural gas contains many impurities. In order to meet the requirements of transportation and use, water vapor and heavy hydrocarbons must be removed. At present, the dehydration technologies used in domestic natural gas gathering and transportation systems mainly include: triethylene glycol dehydration system in Changqing Oilfield, J-T valve low-temperature separation system in Southwest Oilfield, turboexpander dehydration system in Daqing Oilfield, molecular sieve dehydration and low-temperature separation in Tarim Gasfield These technical equipment are not only complex in structure but also high in operating costs. ...

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Problems solved by technology

[0005] According to published information, China University of Petroleum (East China), Beijing University of Technology, and Jianghan Petroleum Machinery Research Institute have completed preliminary numerical simulations and field tests, but all of them have adopted the delta-wing induced swirl scheme ; Dalian University of Technology used a homogeneous model to numerically simulate the inlet swirl scheme, but no relevant test results have been published; The two schemes of flow have been systematically studied from two aspects of numerical simulation and field test, and have applied for several national invention patents successively

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