A long-effect self-cleaning negative-pressure ejector at least comprises a suction chamber, a jet pipe and a flushing member. A side wall of the suction chamber has at least one suction port for communicating with a first fluid pipeline. An exit port of the jet pipe is disposed in the suction chamber and ejects a second fluid so that a negative pressure is generated in the suction chamber, a first fluid in the first fluid pipeline obliquely enters the suction chamber, and a first included angle is between a direction in which the first fluid being sucked into the suction chamber and an ejection direction of the second fluid. The flushing member optionally provides a third fluid to flush the suction chamber and/or the first fluid pipeline. At least one air jet nozzle is disposed on the first fluid pipeline to inject gas into the first fluid pipeline.

Embodiments of a direct-drive fan system and a variable process control system are disclosed herein. The direct-drive fan system and the variable process control system efficiently manage the operation of fans in a cooling system such as a wet-cooling tower or air-cooled heat exchanger (ACHE), HVAC systems, mechanical towers or chiller systems.

A gas-liquid contact apparatus has a gas-liquid contact unit, a liquid supply system, and a gas supply system. The gas-liquid contact unit includes a plurality of stages which are allocated so as to be arranged in the lateral direction. Each of the plurality of stages includes a plurality of vertical flat plates arranged parallel to each other at intervals. The liquid supply system supplies a liquid to the gas-liquid contact unit, and causes the liquid to be circulated along the arrangement of the plurality of stages successively. The gas supply system supplies a gas to the gas-liquid contact unit, and causes the gas to be circulated along the arrangement of the plurality of stages successively. The supplied liquid flows down on the plurality of vertical flat plates in each of the plurality of stages, and comes into contact with the supplied gas.

A packing for gas-liquid contact has at least one packing element of a thin layer shape, placed in a standing position. The packing element has a main body portion having a planar liquid film-forming surface extending along a liquid flow direction, and at least one wall portion provided to stand relative to the liquid film-forming surface and extending along the liquid flow direction. The wall portion has a side surface inclined at a predetermined angle to the liquid film-forming surface in a surface position of a liquid film to be formed by a liquid on the liquid film-forming surface.

A particulate matter collecting apparatus includes a duct, a water sprayer, a micro-channel forming unit, and an impactor. A gas-liquid mixed fluid is formed by spraying water to air flowing along the inside of the duct using the water sprayer. The gas-liquid mixed fluid collides with a collision plate of the impactor after passing through a plurality of micro-channels provided in the micro-channel forming unit. Particulate matter in air is collected by droplets or a liquid film formed on the plurality of micro-channels and the collision plate. Water flowing down from the plurality of micro-channels is discharged through a first water outlet.

The device (1) for bringing a gas and a liquid into contact includes an enclosure (E), first means (5) for introducing into the enclosure and circulating therein a gas stream (G), second means (6) for introducing into the enclosure and circulating therein a liquid stream (L) that circulates inside the enclosure (E) in the same direction as the gas stream (G), and means (4A) for mixing the gas stream (G) and the liquid stream (L). These mixing means (4A) are positioned inside the enclosure (E) in the path of the gas stream and liquid stream and are capable of locally deflecting upward, and/or of locally causing to rise, at least one portion of the gas stream and liquid stream, so as to locally create turbulences in the gas stream and in the liquid stream.

An atmospheric water generation system comprises water vapor consolidation systems configured to increase the relative humidity of a controlled air stream prior to condensing water from the controlled air stream. The water vapor consolidation system comprises a fluid-desiccant flow system configured to decrease the temperature of the desiccant to encourage water vapor to be absorbed by the desiccant from an atmospheric air flow. The desiccant flow is then heated to encourage water vapor evaporation from the desiccant flow into a controlled air stream that circulates within the system. The humidity of the controlled air stream is thereby increased above the relative humidity of the atmospheric air to facilitate condensation of the water vapor into usable liquid water.

A cooling tower (2) for cooling a liquid (4) with a gas (6), which cooling tower (2) comprises: (i) a vessel (8) for receiving the gas (6) passing upwardly and the liquid (4) passing downwardly, with the liquid (4) being hotter than the gas (6); (ii) a gas outlet (4) which is at a top portion (16) of the vessel (8) and which is for allowing the gas (6) to pass out of the vessel (8), (iii) a support member (20) which is positioned across a bottom portion (22) of the vessel (8): (iv) a plurality of apertures (24) which are in the support member (20) and through which the gas (6) and the liquid (4) are able to pass; (v) a fluidised bed (26) of packing elements (28) on the support member (20); (vi) liquid emitting means (30) which is positioned in the vessel (8) above the fluidised bed (26), and which is for emitting alas liquid (4) to be cooled such the liquid (4) passes downwardly towards the fluidised bed (26); (vii) pump means (32) for pumping the liquid to the liquid emitting means (30); and (viii) a fan (34) for blowing the pas upwardly through the fluidised bed (26), and the cooling tower (2) being such that it includes (ix) control means (31) for controlling (a) the velocity of the gas through die vessel (8), and (b) the liquid to gas ratio in the vessel (8), whereby the fluidised bed (26) is caused to operate at a tumbling rate which when combined with selected pre-fluidised packing height causes an approach temperature of below 10° F. (5.6° C.); (x) wherein the tumbling rate is controlled by a combination of controlled gas velocity and liquid to gas ratio creating turbulent mixing and tumbling of packing elements (28) in the fluidised bed (26); (xi) and wherein the pre-fluidised height of the fluidised bed (26) is from 0.15-1.0 m.

There is provided an ammonia gas removal system, including a fine bubble generation device which is configured to receive at least a portion of scrubber process water from a storage tank, and to generate fine bubbles containing carbon dioxide gas in the received scrubber process water, the storage tank being configured to store the scrubber process water to be provided to a gas scrubber, the gas scrubber being configured to spray the process water onto ammonia-containing gas.

A hydrophilized material has a surface provided with surface roughness that arithmetic mean roughness is 0.3 μm to 1.0 μm and mean width of roughness profile elements is 0.1 mm or less. A hydrophilized member that contacts a liquid is at least partially made of the hydrophilized material. The hydrophilized member is applicable to a gas-liquid contact apparatus having a gas-liquid contact section, a liquid supply system, and a gas supply system, to constitute the gas-liquid contact section as a packing element. Wettability imparted due to the surface roughness is exhibited continuously.