Abstract: The methods and the apparatuses of an aeration equipment are described. A floatable aeration equipment with mobility at least has a floatable apparatus, a plurality of aeration apparatuses, and a controller. The thrust causing the motion of the aeration equipment is generated from the aeration apparatuses while aerating. The moving directions and positions of aeration equipment are controlled by a controller, which switches on/off a power source of one or more selected aeration apparatus.

Abstract: An inclined fluid receiving surface (230) is positioned a short distance away from a pipe distributor (210) having a plurality of openings (212) and receives from the openings a liquid-containing fluid (220) with a horizontal momentum (222) in the direction of the pipe flow. The fluid receiving surface (230) further includes a flow-impeding portion (232) that reduces the horizontal momentum (222) of the fluid (220) on the fluid receiving surface (230), thereby significantly improving distribution of the fluid (220).

Abstract: A system for aerating liquid within a liquid retention structure including a liquid delivery tube in fluid communication with a gas exchange chamber and a pump. The gas exchange chamber includes an air inlet and a gas outlet. The pump is configured to pump liquid within the liquid retention structure through the liquid delivery tube and into the gas exchange chamber so that harmful gases contained within the liquid escape from the liquid and exit through the gas outlet. Fresh air enters into the gas exchange chamber through the air inlet and is absorbed into the liquid within the gas exchange chamber.

Abstract: Circulating air is cooled by heat exchange with adiabatically cooled process air. To this end, a first heat exchanging device is fed with circulating air and the process air. The heat exchanging device contains a humidifying device used to spray water into the process air. In this way, the process air is adiabatically cooled and the corresponding cooling is carried out by heat exchange with the circulating air. Before entering the first heat exchanging device and before leaving same, the process air is guided through a second heat exchanging device in which the cooled process air first extracts heat from the uncooled process air. This increases the cooling performance of the device.

Abstract: A fan spray device is provided with a housing having a shape of a character head. A fan assembly is provided on the character head housing with a propeller for generating a stream of forced air away from the housing. A spray assembly is provided on the housing proximate to the propeller to dispense liquid into the stream of forced air. A handle is operably connected to the housing for movement between a retracted position and an extended position.

Abstract: The invention relates to a gas cooling device for coke-oven gas containing condensing constituents. Said device comprises a gas conduit (6), through which the coke-oven gas flows, heat exchanger elements in said gas conduit that are traversed by a coolant and a spray device (2) located above the heat exchanger elements, the surface of the heat exchanger elements that faces the gas being wet by a liquid that is fed through the spray device (2). According to the invention, the heat exchanger elements (5) are configured as cooling plates (5), through which the coolant can flow and are combined with channel-forming spacers (7) to form at least one heat exchanger stack. The heat exchanger stacks are located in the gas conduit (6) with a vertical alignment of their cooling plates (5), the gas channels formed by the spacers (7) being sprayed from above by the liquid that emanates from the spray device (2) and being traversed by the coke-oven gas.

Abstract: A wastewater treatment system, including a tank and an elongate draft tube. The tank includes a bottom and at least one partition wall extending short of a tank curved turning wall to form at least a pair of channels for movement of a volume of a liquid. The elongate draft tube is at least partially submerged beneath the liquid and is rotated about its longitudinal axis for orbitally moving the liquid through the at least a pair of channels of the tank in a fixed direction. A process for treating wastewater is also provided.

Abstract: A stacked packing for a heat-exchange or mass-transfer column has a horizontal upper packing part and a horizontal lower packing part below the upper part. This lower part is formed of a plurality of upright layers, some of which are of substantially greater density and have a greater surface area than others.

Abstract: A heat exchange splash bar for evaporative cooling. The splash bar includes a first serrated base along with a second serrated base. The splash bar additionally includes a first side wall connected to the first serrated base that extends at an angle away from the first serrated base, that includes a plurality of apertures disposed thereon. A second side wall is connected to the second serrated base that also extends at an angle away from the second serrated base. The second side wall additionally includes a plurality of apertures disposed thereon. The heat exchange splash bar additionally includes a top wall that extends between the first side wall and the second side wall, wherein said top wall includes a plurality of openings having fingers extending therein.

Abstract: A stacked packing for a heat-exchange or mass-transfer column has a horizontal packing part formed of a plurality of upright layers. Some of the layers of the lower part are of substantially greater density and have a greater surface area than others of the layers.

Abstract: Vaporizable material is supported within a vessel to promote contact of an introduced gas with the vaporizable material, and produce a product gas including vaporized material. A heating element supplies heat to a wall of the vessel to heat vaporizable material disposed therein. The vessel may comprise an ampoule having a removable top. Multiple containers defining multiple material support surfaces may be stacked disposed within a vessel in thermal communication with the vessel. A tube may be disposed within the vessel and coupled to a gas inlet. Filters, flow meters, and level sensors may be further provided. Product gas resuting from contact of introduced gas with vaporized material may be delivered to atomic layer deposition (ALD) or similar process equipment.

Abstract: A column for mass exchange between a liquid and a gas includes at least one pair of adjacent exchange plates, formed by an upper exchange plate and a lower exchange plate. The column also includes a drain shaft for passing liquid between the upper exchange plate and the lower exchange plate, and a recessed inlet cup located underneath a bottom end of the drain shaft. The bottom of the inlet cup is recessed relative to the surface of the lower exchange plate. The recessed inlet cup extends over only one part of the cross-section of the bottom end of the drain shaft.

Abstract: A portable humidifier includes: a bottle for storing water therein, a capillary device immersed in the bottle for capillarily absorbing water as stored in the bottle, an ultrasonic vibrator mounted on a upper portion of the bottle for normally contacting a top wick portion of the capillary device and operatively vibrating for compressing the top wick portion for ejecting water mists upwardly outwardly through a plurality of perforations formed through the vibrator, a control device formed on a top cover of the bottle for controlling the on-off operation of the vibrator, a sensor formed on the top cover for sensing the surrounding humidity for reminding the user whether to actuate the control device for humidifying the surrounding, and a light indicator for illuminating and checking water level in the bottle to remind whether to refill water into the bottle.

Abstract: A system and method for providing a vapor are described. In one variation, liquid is placed in a containment vessel, and a pressure in the containment vessel is reduced below atmospheric pressure. The pressure in the vessel is monitored and the liquid is heated in response to the sensed pressure falling below a desired level. When needed, the vapor is delivered from the liquid containment vessel to the external system.

Abstract: For the reliable condensation of steam on condensation nuclei in an aerosol flow and therefore for enlarging the particles in the aerosol, the invention provides a method which is characterized in that condensation nuclei are passed through an inner area of an evaporating zone forming a flow area, the liquid to be evaporated is contacted with the flow area and evaporated therein and the thus produced steam is condensed on the condensation nuclei. the invention also provides an apparatus for condensing steam on condensation nuclei with an inlet for condensation nuclei and an evaporating zone constructed in such a way that a flow area for the condensation nuclei has a heated liquid duct open thereto and that a condensation flue is connected to the flow area. The invention also provides methods and apparatuses for counting particles, for producing monodisperse aerosols using the aforementioned method or the aforementioned apparatus.

Abstract: The tray valve for a tray column includes an opening in a tray for a vapor passage and a valve body that is made to match the tray opening. The valve body consists of a top plate and vertically downwardly directed guide limbs arranged at the edge of the plate. The guide limbs have barbs for the anchoring of the valve body in the opening. The material and shape of the valve body are selected so that upon insertion of the valve body into the tray opening the top plate deforms in an arched manner while the guide limbs and barbs without deformation pass through the opening in a snap-fit manner. Weakened portions, in the form of grooves, slits or bores, can be provided in the top plate to facilitate upward arching of the top plate. Any deformation at the inserted valve body can be reversed, with the exception of a slight residual deformation, by an application of force onto the top plate.

Abstract: The valve for a contract tray employs an aperture in a deck that is of rectangular or trapezoidal shape with upstanding walls at the sides of the aperture. The valve body is disposed in the aperture with a cover above the aperture and legs that extend downwardly to interfit with at least the upstream end of the walls to block the liquid flow. The valve body may be fixed or movable. In the movable embodiment, the valve body is seated on the walls about the aperture to close the aperture. The ascending vapor lifts the valve to allow bubbling of the vapor in the liquid on the deck.

Abstract: The invention disclosed relates to a method and apparatus for controlling the dissolved gas content of aqueous liquid containing a dissolved gas by providing a microporous hydrophobic hollow fibre membrane, to provide at equilibrium a stable interface between an aqueous liquid phase containing dissolved gas on one side of the membrane and a gaseous phase on the other side of the membrane, and controlling the aqueous phase and gaseous phase pressures, such that in operation the gaseous phase pressure is up to but not exceeding the aqueous phase pressure, and flowing the gaseous and liquid phases across the membrane, to provide simultaneous mass transfer through the membrane of a first gas in the gaseous phase into the liquid phase and of a second gas dissolved in the aqueous liquid into the gaseous phase, whereby the gas content of the first gas in the aqueous phase is increased, the gas content of the second gas in the gaseous phase is decreased and the total dissolved gas pressure (TG) of the aqueous phase i

Abstract: A separating column containing a sequence of mass transfer trays that are supported by at least one covered double-T support and/or covered U-shaped support.

Abstract: A carbonic water production apparatus equipped with a carbonic acid gas dissolving apparatus and a circulation pump, wherein water in a bath is circulated by the circulation pump, and carbonic acid gas is fed into the carbonic acid gas dissolving apparatus to dissolve the carbonic acid gas in the water, and wherein the circulation pump is a positive-displacement metering pump having a self-priming ability; a carbonic water production method using this apparatus; a carbonic water production method including an early step for producing a carbonic water and a concentration maintaining step for the carbonic water; a carbonic water production apparatus equipped with a device for controlling the feeding pressure of carbonic water gas so as to give an intended concentration of carbonic acid gas; a carbonic water production apparatus which automatically discharges out a drain; and a carbonic water production apparatus combined with a portable foot bath.