Disclosed is a wet air purifier that eliminates contaminants while contaminated air passes therethrough by causing the contaminated air to come into contact with water. The wet air purifier suctions external air by rotating a rotary fan installed therein and disperses water droplets by causing water to collide with a rotary fan to increase a contact surface between air and water. In the wet air purifier, a mixture of the contaminated external air and the water is made to pass through a long narrow passage and guided to a storage tank in which contaminants are settled. In this way, the wet air purifier increases a retention time and a collision time of water and contaminated air. The wet air purifier also can function as a humidifier.

A method for dual water scrubbing and an in-line dual water scrubber for gas cleaning onboard a vessel are disclosed. The in-line dual water scrubber includes a vertical extended body, a gas inlet, and a gas outlet. The gas inlet is underlying in the lower section of the extended body and the gas outlet is overlying in the upper section of the extended body. A first underlying scrubbing section, and a second scrubbing section in an upper section of the extended body are provided. One or more liquid collectors are arranged above one or more first scrubbing liquid sprayers. The liquid collector is arranged for collecting one or more second scrubbing liquid and for flow through of a vertical upwards flowing gas-flow from the inlet to the outlet.

A cleaning system for reducing SOx and particulate matter in exhaust gases from a marine combustion engine, burner or boiler. The cleaning system comprises first and second scrubber process loops having first and second scrubber, respectively, and first and second water circulation tanks, respectively. Water from the first tank is evaporated to water vapor inside the first scrubber by contact with the exhaust gases, whereby the water vapor and the exhaust gases form humid exhaust gases. The humid exhaust gases are transferred to the second scrubber, wherein water from the second tank condensates the water vapor in the humid exhaust gases. A reflux of water from the second scrubber process loop to the first scrubber process loop is provided. At least 60% and more preferred at least 90% of a total amount of alkaline agent supplied to the cleaning system is supplied to the second scrubber process loop.

The present invention provides an air purifying apparatus that can continuously discharge sludge separated from suctioned contaminated air from a dust collecting apparatus to the outside, thereby improving convenience of use and air purifying performance, and can mix contaminated air with water, eliminate the sludge and contaminants in the air, and allow the eliminated sludge and contaminants to pass through a photocatalytic purifying unit and purify air using a photocatalytic reaction, thereby improving air purifying performance.

The invention proposes an apparatus for gas cleaning having a high gas cleaning efficiency at any relative humidity. The apparatus comprises a passage (10) for gas flow; a hydrophilic carrier (12) permeable for gas flow, at least part of which is positioned within said passage for gas flow, and configured for containing a reagent that contacts the gas in said passage for gas flow; a unit (14) for disposing liquid to said carrier; and a controller (16), associated with said unit for disposing liquid, configured for controlling the unit for disposing to dispose an aqueous solution of dissolved reagent to the carrier; and after that controlling the unit for disposing to dispose liquid in case the humidity of the gas is below a first humidity threshold, or to stop disposing liquid in case the humidity of the gas is above a second humidity threshold.

This description relates to waste disposal garbage chutes and more particularly to automated air quality management in and around the disposal chute and collection rooms where garbage chutes are present utilizing automated air quality sensing hardware and evacuation devices to provide a clean, sanitary waste room environment. A system according to the present invention includes a 3 step design using an air sensor to determine air cleaning cycle, and an air intake port with specular reflective surfaces in the inside to provide a reflective element to reflect UV light into the airborne particulates thereby killing 99% of the bacteria and fungi before entering an electrified gravity fed fluid filament air filter which collects the dead bacteria and fungi and settles in a collection reservoir. The fluid in the reservoir is then further filtered to clean the fluid for reuse in the automated air cleaning system.

Venturi-type scrubbers may be utilized in conjunction with removing solids from and quenching a gas-phase reaction product. Methods may comprise: providing a reaction product comprising a hydrocarbon gas and solids; introducing the reaction product into a Venturi-type scrubber; introducing a scrubbing fluid into the Venturi-type scrubber, wherein the scrubbing fluid is at a lower temperature than the reaction product; producing from the Venturi-type scrubber a multi-phase product comprising a scrubbed reaction product and a spent scrubbing fluid, the scrubbed reaction product comprising the hydrocarbon gas and the spent scrubbing fluid comprising the scrubbing fluid and the solids; and separating the hydrocarbon gas from the multi-phase fluid. Systems may comprise a reactor; a Venturi-type scrubber having a first inlet fluidly connected to the reactor and a second inlet configured to receive a scrubbing fluid; and a separation tower configured to receive a multi-phase stream from the Venturi-type scrubber after solids removal.

An apparatus adapted to separate solids suspended in a fluid medium, includes a cylindrical container adapted to contain the fluid medium, an air movement fan operatively connected to the container, the fan being positioned to direct a flow or flows of air onto the surface of the fluid medium at a tangent to the axis of the container, thereby to generate a swirling movement of the fluid around the axis, whereby the solids congregate around the axis from the fluid medium.

A wet scrubber (1) useful for cleaning a process gas comprises at least a first spray level system (20) and a second spray level system (26) arranged vertically above the first spray level system (20) in a wet scrubber tower (2). The first spray level system (20) comprises at least one gas-liquid contacting plate (38) which is operative for deflecting absorption liquid, that has been atomized by means of the second spray level system (26) and flowing downward in the wet scrubber tower (2), so deflected absorption liquid (AL) may contact process gas (F) contacted by absorption liquid atomized by the first spray level system (20).

The invention relates to a system for trapping atmospheric emissions, made up of a liquefaction tank which contains a liquid that traps the dust, smokes or gas, which are injected into the same through a main duct, to which the source of the emission to be trapped is connected, said duct including a first fan which operates by absorbing and propelling the dust, smoke and gas, guiding same into the liquefaction tank, said duct being sealed at the end of thereof, the side walls of the duct comprising at least ten outlet openings, the invention also comprising a system with at least two walls with the same effect and perforations, this causing the liquefaction of the trapped material, likewise, the invention comprises a cooling system, which guides the liquid from the tank into a serpent coil and from there to a pump which generates the recirculation of the liquid; at the top of the tank, the invention comprises an outlet duct via which the gases produced by liquefaction are guided into a compressor, which has the function of compressing the gases and injecting same into a first gas-storage tank.