Disclosed is a desulfurizer of a fuel cell. The desulfurizer includes a pipe extended long and having one side that is open and the other side that is closed; a cap coupled to one side of the pipe and closing the pipe; a plurality of baffles installed in an inner space of the pipe and sequentially partitioning the inner space in a direction crossing a length direction of the pipe; an inflow pipe penetrating through the cap and the plurality of baffles and communicating from the outside of the pipe to the inner space of the pipe; and an outflow pipe installed in the cap and communicating the outside of the pipe and the inner space of the pipe.

A built-in apparatus and method for treating air including a housing with an air inlet and an air outlet. An air mover positioned near the air outlet is configured to draw the air through the air inlet. The housing encloses an air treatment zone, such as including an oxidizing zone, and an ozone removal zone positioned downstream of the air treatment zone and oxidizing zone. The air treatment zone includes UV light and/or ozone that partially oxidizes the chemical contaminants in the air treatment zone. A catalyst in the oxidizing zone oxidizes elements within the air treatment zone. The ozone removal zone includes a second, different catalyst material. A UV bulb that may or may not generate ozone is positioned within or downstream of the first and/or second catalyst materials to assist catalyst oxidation and/or self-clean the apparatus.

A built-in apparatus and method for treating air including a housing with an air inlet and an air outlet. An air mover positioned near the air outlet is configured to draw the air through the air inlet. The housing encloses an air treatment zone, such as including an oxidizing zone, and an ozone removal zone positioned downstream of the air treatment zone and oxidizing zone. The air treatment zone includes UV light and/or ozone that partially oxidizes the chemical contaminants in the air treatment zone. A catalyst in the oxidizing zone oxidizes elements within the air treatment zone. The ozone removal zone includes a second, different catalyst material. A UV bulb that may or may not generate ozone is positioned within or downstream of the first and/or second catalyst materials to assist catalyst oxidation and/or self-clean the apparatus.

An atomizing diffuser for gaseous environment cleaning: includes a tank cover covered in a water tank to define an oscillation space in the tank cover so as to enhance the effect of oscillating atomized liquid, a housing shield shielding the tank cover and provided with a water filling hole for allowing direct filling of liquid in the water tank and the oscillation space, and an oscillation device with the oscillator thereof coated with a layer of acid and alkali resistant coating for oscillating the alkaline ionized water and other acid-alkaline cleaning liquids in the oscillation space into gaseous cleaning mist that is outputted to the external environmental space for sterilization, cleaning, deodorization, virus elimination, or air purification, and an umbrella-shaped panel with radial ribs provided in the housing is illuminated by light to show the beauty of a paper umbrella, matching the spray effect.

Systems and methods that utilize both UVA and UVC lamps to clean and disinfect a cabin filter of a vehicle, thereby preventing the cabin filter from becoming fouled for an extended period of time. By performing both gas filtration and cabin filter disinfection functions, these systems and methods mitigate: (1) the pressure drop (or flow reduction) experienced; (2) the smell breakthrough when the gas adsorbent becomes saturated; and (3) the presence of microbial growth. This is accomplished by the sequential application of UVC and UVA radiation to the cabin filter, with the UVC radiation being applied for a period of time upon vehicle startup to neutralize bacteria and fungus present in the cabin filter and the UVA radiation subsequently being applied continuously to filter the gas flowing through the cabin filter. A photocatalyst may be added to the cabin filter itself to enhance disinfection and gas filtration.

Described herein are methods for reducing odors produced from terpenes. The methods involve treating air comprising one or more terpenes in order to reduce the odor. In one aspect, the air comprising the terpenes are circulated through compositions that can convert the terpenes to new chemical species that are not as odorous or possess no odor at all. The methods described herein have numerous applications where terpenes are produced or processed and it is desirable to reduce the odor produced by these compounds.

Disclosed herein is a photocatalytic oxidation device that includes a frame and a pair of opposing photocatalytic cell panels. An ultraviolet lamp is disposed within an interior chamber and, when activated, causes the generation of oxidizers at the cell panels. Air is passable through apertures of the cell panels and thus may be moved through the device. The device is structurally configured and dimensionally optimized to provide effective photocatalytic activity without overly restricting airflow.

Proposed is a method of monitoring odor-causing substances in flue gas, which comprises: providing a flue gas containing one or more odor-causing substances; introducing the flue gas into an odor removal unit; producing a gas-phase stream; dissolving a portion of the gas-phase stream in a solvent to produce a liquid-phase stream; and measuring an absorbance of the liquid-phase stream to identify the odor-causing substances.

An apparatus is used for concentrating malodorous organic pollutant waste gas by using an adsorption method. The specific solution is to provide a plurality of parallel fixed-bed adsorbers and a set of movable hot air desorption apparatuses which can be connected to at least one of the plurality of parallel fixed-bed adsorbers in sequence, and to respectively complete desorption of all parallel fixed adsorbent beds by means of the movable hot air desorption apparatuses. In the improved solution, the movable hot air desorption apparatus is connected to two adsorption units, and a regenerative heat exchange apparatus is provided on an inlet and outlet pipeline of the hot air desorption apparatus. The desorption process of the regenerative fixed-bed adsorbers is changed from concentrated desorption requiring high-power energy consumption to stepwise desorption requiring low-power energy consumption.

A deodorizing device for waste air from hot air treatment plants for foodstuff and/or animal feed, having a treatment unit with a housing which has a treatment chamber that can be flowed through and is arranged between at least one waste air intake connection and at least one waste air outlet connection. At least one capacitor element and an activated carbon filter element are arranged in the cross-section, which can be flowed through. At least one fresh air supply line opens into the treatment chamber, wherein the cross-section of the fresh air supply line that can be flowed through can be changed and/or closed by means of a motor-driven control valve. At least one filter element is also arranged downstream of the opening of the fresh air supply line into the treatment chamber.