The invention relates to a system and method for CO.sub.2 capture. The system includes a fleet of CO.sub.2 producing assets comprising a fleet of assets having at least two individual assets that produce CO.sub.2 containing gas streams, and a set of modular CO.sub.2 capture units to capture the CO.sub.2 from the CO.sub.2 containing gas streams produced by the fleet of assets, wherein at least one of the individual assets is equipped with not less than two modular CO.sub.2 capture units, and at least one of the modular CO.sub.2 capture units is operated at more than one of the assets during the service life of the modular CO.sub.2 capture unit. The method for CO.sub.2 capture includes providing the fleet of assets and equipping them with a set of modular CO.sub.2 capture units. Advantage over current approaches is performance is optimized across a fleet of assets rather than at an individual site.

In a filter device, a disc-shaped filter is disposed on a main flow channel through which a gas flows, and the filter is rotated by a motor. A branch flow channel branches off at the downstream of the filter in the main flow channel, and branched gas is passed through the filter in an opposite direction. Rotation of the filter moves dust collected in a dust gathering region where the filter and the main flow channel overlap with each other to a cleaning region where the filter and the branch flow channel overlap with each other so that the dust is disengaged from the filter. Thus, the filter of the filter device can be automatically cleaned.

A method for removing carbon dioxide (CO.sub.2) from a gas is described. The method provides a sorbent liquid for the CO.sub.2 in countercurrent flow with a gas stream comprising the CO.sub.2 and absorbs the CO.sub.2 in the sorbent liquid to obtain a gas with a reduced concentration of CO.sub.2, and a sorbent liquid enriched with the absorbed CO.sub.2. The absorbed CO.sub.2 is stripped from the enriched sorbent liquid to obtain a regenerated sorbent liquid and CO.sub.2-containing gas. The absorbing step a) is performed at a first facility provided in a first location and the sorbent liquid enriched with the absorbed CO.sub.2 is then transported from the first facility to a second facility provided in a second location at a distance from the first location. The stripping step b) is performed at the second facility and at least 4 hours later than the absorbing step a). The stripping step b) is performed by a membrane separation system.

An air cleaning device using water as a filter comprises a water tank, a water pump, a pressure equalizer and air-inhale tubes. The water tank includes an accommodation space for containing water, air inlets and air outlets. A cover hoods the water tank and has a water storage tank and air inlets. The water pump is disposed inside the water tank and connected with the pressure equalizer. Jet pipes of the pressure equalizer respectively interconnect with the air inlets through the air-inhale tubes. The water pump sucks the water in the accommodation space. Through the air-inhale tubes, the jet pipes inhale air in a jet fashion from exterior of the air inlets disposed in multiple directions. The air cleaning device can filter out the impurities in the air and fast clean the air of a large space. The present invention uses water as the filter and favors environmental protection.

A regeneration tower may include: a rich absorbent liquid supplier that supplies rich absorbent liquid into a first housing; a rectifier positioned below the rich absorbent liquid supplier and rectifying flow of the rich absorbent liquid supplied downwardly in the first housing; a reboiler positioned below the rectifier and separating regeneration gas from the rich absorbent liquid by boiling the rich absorbent liquid; a separator that supplies the rich absorbent liquid from the rectifier to the rich absorbent liquid tank, bypassing the regeneration gas generated in the reboiler into the first housing through a path different from a supply path of the rich absorbent liquid to the reboiler; and a lean absorbent liquid tank receiving lean absorbent liquid from which the regeneration gas is separated in the reboiler, where the reboiler receives the rich absorbent liquid only through the rich absorbent liquid tank.

An oxygen concentrator may rely on a pressure swing adsorption process to produce an oxygen enriched gas stream from canisters filled with granules capable of separation of oxygen from an air stream. The adsorption process uses a cyclical pressurization and venting of the canisters to generate an oxygen enriched gas stream. Coupling an oxygen concentration sensor to the generated oxygen enriched gas stream may allow monitoring of the purity of the produced gas.

An oxygen concentrator may rely on a pressure swing adsorption process to produce an oxygen enriched gas stream from canisters filled with granules capable of separation of oxygen from an air stream. The adsorption process uses a cyclical pressurization and venting of the canisters to generate an oxygen enriched gas stream. The oxygen concentrator system may operate in multiple modes, automatically determined or selected by the user, to take into account the different activity levels of the user.

A method for obtaining a desired atmosphere within an interior space during an initial startup phase of a CAS is provided. The method includes a controller starting the CAS while keeping the air compressor OFF. The method also includes the controller calculating an atmosphere change rate while the air compressor OFF, and determining whether the interior space can reach a desired atmosphere set point with the air compressor OFF based on the atmosphere change rate. Further, the method includes the controller maintaining the air compressor OFF until the interior space reaches the desired atmosphere set point when the controller determines that the interior space can reach the desired atmosphere set point with the air compressor OFF, and switching the air compressor ON when the controller determines that the interior space cannot reach the desired atmosphere set point with the air compressor OFF.

A portable dry scrubber comprises a gas flow control module comprising a gas receiving unit that receives inflow of gas from surrounding atmosphere or from a gas source, a gas processing module that removes hazardous matter from the gas flowed in through the gas receiving unit and a connection module that connects the gas flow control module detachably to the gas processing module. The connection module comprises quick coupling device that establishes and disassembles a gas flow passage between the gas flow control module and the gas processing module. Example of the quick coupling device is a quick release vacuum flange that engages with a connecting flange of the gas flow control module.

An air cleaning device using water as a filter comprises a water tank, a water pump, a pressure equalizer and air-inhale tubes. The water tank includes an accommodation space for containing water, air inlets and air outlets. A cover hoods the water tank and has a water storage tank and air inlets. The water pump is disposed inside the water tank and connected with the pressure equalizer. Jet pipes of the pressure equalizer respectively interconnect with the air inlets through the air-inhale tubes. The water pump sucks the water in the accommodation space. Through the air-inhale tubes, the jet pipes inhale air in a jet fashion from exterior of the air inlets disposed in multiple directions. The air cleaning device can filter out the impurities in the air and fast clean the air of a large space. The present invention uses water as the filter and favors environmental protection.