Conical core type supersonic condensing cyclone separator

Abstract

The invention relates to a taper core type supersonic condensation cyclone separator, belonging to the technical field of expansion refrigeration and condensation separation of pressure gas. The taper core is inserted in a passage, and the diameter of the taper core is changed at different places, so as to form the passage with a gradually decreased section part, a constant throat part and a gradually increased section part; therefore, a constant diameter inner hole can be adopted to avoid gradually increased small taper pipe passage which is difficult to be machined, so that the spin strength is not weakened due to the diameter increase. The taper core type supersonic condensation cyclone separator enables low-temperature working condition by means of pressure expansion and cooling of the gas, and reinforces spin by means of diameter decrease to generate strong centrifugal force field. The pressure can be increased after separation. The taper core type supersonic condensation cyclone separator has the advantages of no moving pieces, no need of external drive, energy saving, compact size, low cost, stable and reliable operation, and applicability to condensation separation of mixed gas with high pressure and low flow rate and separation of heavy components of natural gas and petroleum gas, in particular to offshore platform and other occasions with limited space due to compact size.

Description

technical field [0001] The invention relates to a cone core type supersonic condensation cyclone separator, which belongs to the technical field of expansion refrigeration and condensation separation of pressurized gas. The invention is a static condensing and separating device which makes the gas expand and cool down at a high speed, and then separates the heavy component condensate in the high-speed rotating flow field. Background technique [0002] Using pressure gas pressure energy to expand and refrigerate, the heavy components in it are condensed into liquid, and then the gas-liquid separation is carried out to realize the separation of heavy components in the mixed gas. This technology can be widely used in the separation of various mixed gases, especially in the fields of natural gas dehydration purification and light hydrocarbon recovery. The conventional cryogenic process of natural gas often adopts the "Braton" cycle, and the key equipment is the expansion refrig...

AI Technical Summary

Problems solved by technology

However, when the liquid droplets produced in the nozzle of the device are injected into the separation tube, the condensed liquid droplets are easily volatilized again, causing unnecessary supercooling loss; the gas velocity at the nozzle outlet is too high (sonic or supersonic), Excessive rotation strength reduces total pressure efficiency

In addition, Shell's Twister and the supersonic cyclone separation part of the multi-inlet supersonic cyclone separation and back pressure device of Xi'an Jiaotong University both use diffusers with small angles, and it is difficult to process such smooth diffusers. It is very large, and the swirl strength in the expander will decrease with the increase of the diameter of the expander, reducing the gas-liquid separation effect

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