A hydrocyclone for separating a vapor from a carrier gas is disclosed. The hydrocyclone comprises one or more nozzles. A cryogenic liquid is injected to a tangential feed inlet at a velocity that induces a tangential flow and a cyclone vortex in the hydrocyclone. The carrier gas is injected into the cryogenic liquid, causing the vapor to dissolve, condense, desublimate, or a combination thereof, forming a vapor-depleted carrier gas and a vapor-enriched cryogenic liquid. The vapor-depleted carrier gas is drawn through a vortex finder and the vapor-enriched cryogenic liquid is drawn through an apex nozzle outlet. In this manner, the vapor is removed from the carrier gas.

The present invention discloses a gas-liquid separation device, including: a vortex generating region, used for receiving a gaseous fluid and providing a gaseous vortex; a fluid conversion region, used for receiving the gaseous vortex and providing a liquid fluid; and a fluid separation region that includes a first fluid passage for receiving the liquid fluid and a second fluid passage for receiving the gaseous fluid which is not converted into liquid fluid, wherein a cross section of the fluid separation region has a first width and a second width, the first width is greater than the second width, and the first fluid passage is connected with the second fluid passage at the position of the first width. The present invention also discloses a gas-liquid separation method.

An apparatus to separate water droplets from an air stream. The apparatus includes an elongated tube, a reservoir, and a helix structure. The elongated tube has a first end, a second end, a longitudinal axis, an inner surface, an inlet opening at the first end of the elongated tube, the inlet opening arranged to accept the air stream tangentially relative to the longitudinal axis, and an outlet opening at the second end of the elongated tube. The reservoir is positioned at a second end of the elongated tube. The helix structure is positioned within the elongated tube and includes an upper surface, a lower surface arranged opposite the upper surface, an outer edge, and a variable pitch along a length of the elongated tube, the variable pitch providing a variable interior angle between an inner wall of the elongated tube and the upper surface of the helix structure.