The present invention provides an oxygen absorber composition containing a hydrocarbon resin; an iron particle having an average particle diameter of 1.0 m or more and 200 m or less and having a BET specific surface area of 10 m.sup.2/g or more; and an aldehyde absorber capable of absorbing at least aldehyde compound, wherein the iron particle contains iron.

A gas-adsorbing device (1) includes: a container (2); a gas adsorbent (3) configured to be disposed inside the container (2) so as to adsorb a gas; and an aeration member (4) having a predetermined aeration rate. The gas adsorbent (3) is disposed in a space formed by the container (2) and the aeration member (4). Further, the space is configured to be completely enclosed by the container (2) and the aeration member (4). In this configuration, it is possible to attain a gas-adsorbing device in which it is possible to reduce consumption of the gas adsorbent due to contact with air, even when the gas-adsorbing device is handled in air.

Provided is a gas detector which has a high durability to silicone poisoning and of which power consumption is reduced. The gas detector includes a contact combustion-type gas sensor and detects a paraffinic hydrocarbon gas, a solvent gas, and a hydrogen gas. The contact combustion-type gas sensor is configured to include two gas detection elements that are disposed in two detection chambers partitioned from each other, respectively, and the gas inlet of one detection chamber is provided with a silicone removal filter. The paraffinic hydrocarbon gas is detected by one gas detection element disposed in the one detection chamber which is provided with the silicone removal filter. Furthermore, the solvent gas is detected by the other gas detection element which is disposed in the other detection chamber. Still furthermore, the hydrogen gas is detected by either the one gas detection element or the other gas detection element.

An area monitoring device is placed in a location to monitor volatile organic compounds emissions. The device includes a gas sensor capable of detecting VOCs, a sorbent material capable of absorbing VOC molecules, and a heating element positioned in close relation to, or in direct contact with, the sorbent material. After a period of time during which the sorbent material absorbs VOC molecules, the sorbent material is heated to cause the sorbent material to release a gas containing VOC molecules. The amount of released VOC molecules is sensed and calculated. Data is compiled and analyzed. This is accomplished without removing the device from the location. A pump may be provided to force ambient air through the device.

A filtering device features a carrier medium and activated carbon stratum as adsorbent and having a sealing closing over or sealing longitudinal and width sides of the activated carbon stratum all-around a periphery of the activated carbon stratum.

A power supply control device of a nitrogen gas generator includes: a pipe having a nitrogen gas inlet for receiving input of nitrogen gas from a nitrogen gas generator that compresses air by a compressor to separate the nitrogen gas from the air, and a nitrogen gas outlet for outputting, to outside, the nitrogen gas received by the nitrogen gas inlet; a pressure gauge that measures pressure inside the pipe; a flowmeter that measures a flow rate of the nitrogen gas flowing inside the pipe; and a control unit that controls supply of power to the compressor and shut-off of the supply of the power in accordance with a measurement result of at least one of the pressure gauge and the flowmeter.

A method for removing vapors generated by a processing device presenting reduced risk to human handlers includes placing a vapor removing device in a feed area of the processing device. The vapor removing device includes a connecting plate and at least one vapor removing element each connected to one surface of the connecting plate. The vapor removing device is lifted robotically from the feed area and placed into the processing device. Then, the vapor removing element directly removes vapors generated by the processing device when the processing device starts to work, the device being robotically taken out of the processing device and placed back in the feed area.

Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve using a selectivation agent to selectivate the adsorbent material. The selectivation agent may be utilized with the swing adsorption process as an in-situ process. The adsorbent material may be utilized for swing adsorption processes to remove one or more contaminants from a feed stream.

A gas solution production apparatus 1 includes a gas dissolving unit 4 that dissolves gas of a second raw material into a liquid of a first raw material to generate a mixture liquid, and a gas-liquid separation unit 7 that subjects the liquid mixture generated by the gas dissolving unit 4 to gas-liquid separation into a gas solution that is supplied to a use point 5 and an exhaust gas that is discharged from an exhaust port 6. The gas-liquid separation unit 7 includes a capacity variable section 8, 20 that changes a capacity of an internal space of the gas-liquid separation unit 7.

Described are filter products and methods of using filter products, wherein the filter products include multiple cells, each cell containing an individual circulating fluidized beds during use.