Filter unit for adsorbing water and gas and systems and methods of use thereof
AssigneeBASF SE
InventorsMark Thomas Buelow, Yuxuan Xin, Pascaline Tran, Akash Abraham
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Abstract
Disclosed are embodiments of a filter unit containing a water adsorbent material in the form of water adsorbent particles in a packed bed and a gas adsorbent material in the form of gas adsorbent particles in a packed bed. In embodiments, the gas adsorbent material is downstream from the water adsorbent material in a direction of operation. Further disclosed are methods of preparing and using the filter units.
Claims18
A filter unit adapted to maintain humidity and carbon dioxide levels in a passenger cabin of an automobile, a van, a bus, a train or a truck, the filter unit comprising:
- two adsorption lines, each adsorption line comprising:
- a water adsorbent material arranged to contact an inflow of air conditioned by a heating, ventilation, and air conditioning (HVAC) system;
- and
- a gas adsorbent material arranged to contact the air prior to exiting into the passenger cabin, the gas adsorbent material comprising a carbamate that is the product of a reaction between an ethylamine and dimethyl carbonate,
- wherein the gas adsorbent material is downstream from the water adsorbent material in a direction of operation;
- and
- a heater coupled to the water adsorbent material and the gas adsorbent material in each adsorption line.
A filter unit adapted to maintain humidity and carbon dioxide levels in a passenger cabin of an automobile, a van, a bus, a train or a truck, the filter unit comprising:
- a rotary adsorption apparatus comprising:
- a housing;
- a plurality of sectors within the housing, wherein the plurality of sectors form a plurality of adsorption beds;
- and
- a water adsorbent material in at least one of the adsorption beds arranged to contact an inflow of air conditioned by a heating, ventilation, and air conditioning (HVAC) system;
- and
- a gas adsorbent material in at least one of the adsorption beds arranged to contact the air prior to exiting into the passenger cabin, the gas adsorbent material comprising a carbamate that is the product of a reaction between an ethylamine and dimethyl carbonate,
- wherein the water adsorbent material and the gas adsorbent material are arranged in the rotary adsorption apparatus so that a flow path of gas can pass over each adsorption bed during operation and a counter-current flow path of regeneration air can pass over each adsorption bed during regeneration.
Dependencies are inferred from the claim text.