According to an embodiment of the invention, a process for substantially completely removing sulfur dioxide and ammonia from a gas stream is disclosed. The process involves lowering the vapor pressure in a scrubber by contacting the gas stream with one or more streams of re-circulating chilled media. The process further involves adjusting the pH of the process solution in the scrubber to within a predetermined range. The lowering of the vapor pressure and pH adjustment results in an increase in the solubility of sulfur dioxide and ammonia in the process solution thereby facilitating a substantially complete removal of sulfur dioxide and ammonia from the gas stream.

A system for recovering valuables from vent gas in polyolefin production is disclosed. The system includes a compression device, a drying device, a condensation and separation device, and a membrane separation device that are connected to each other in sequence. The drying device includes a first adsorption bed and a second adsorption bed which are in parallel connection with each other and in which a desiccant is provided, and a third adsorption bed which is in communication with the first adsorption bed and the second adsorption bed respectively and in which a desiccant is provided. The first adsorption bed and the second adsorption bed are in an adsorption process and a regeneration process alternately, and the third adsorption bed is in an auxiliary regeneration process. A process for recovering valuables from vent gas in polyolefin production is further disclosed. When the system and the process are used, one part of the normal temperature compressed gas stream output by the compression device directly serves as a regeneration gas for regeneration of saturated desiccant in adsorption bed, and it is unnecessary for external supply of regeneration gas, whereby the actual recovery of nitrogen can be effectively improved. Membrane separation technology is combined, and hydrocarbon recovery can be effectively improved as well.

Air purification and dehumidification apparatus includes a first cooler that cools air introduced through a first inlet, a first rotor that primarily adsorbs and absorbs VOCs and moisture contained in the air cooled by the first cooler, an air conditioning unit that cools or heats the air primarily purified and dehumidified by the first rotor, a blower that moves the air cooled or heated by the air conditioning unit, a second rotor that adsorbs and absorbs VOCs and moisture remaining in the air moved by the blower, a second cooler that re-cools the air secondarily purified and dehumidified by the second rotor, a first heating unit that heats air that is introduced through a second inlet and is then supplied to the first rotor, using sequentially solar energy and electric energy, and a third cooler that condenses air containing the VOCs and moisture that are released from the first rotor.

An air purifier apparatus, comprising: a housing comprising an air intake opening to an external environment outside the housing; a plant pot disposed downstream of the air intake, configured to hold soil, and being perforated so as to enable contact between at least some air outside the plant pot and at least some of the soil inside the plant pot; an air purification filter disposed downstream of the plant pot; a fan disposed downstream of the air purification filter; an air outlet disposed downstream of the fan and located in a first compartment of the housing; a dehumidifier disposed in a second compartment of the housing separate from the first compartment and configured to extract water from air interacting with the dehumidifier, the second compartment having an air exchange perforation opening to the external environment; a watering system, configured to circulate water located inside the housing to the plant pot.

An information provision apparatus for providing information to an occupant of a vehicle provided with a carbon dioxide recovery system, comprising a display part displaying information and an information display processing part configured to display information, relating to a candidate route to a destination of the vehicle and an estimated amount of recovery of carbon dioxide which would be recovered by the carbon dioxide recovery system if driving on the candidate route, linked together on the display part.

An energy-efficient method of removing carbon dioxide, hydrogen sulfide, and other acid gases from a stream of flue gases. The flue stream is contacted with a predetermined sorbent system to remove acid gases from the flue stream. The acid gas-rich sorbent is then heated to desorb the acid gas for capture and regenerate the sorbent. Heat exchangers and heat pumps are used to reduce utility steam and/or cooling water consumption.

An absorption column including at least one external heat exchange circuit for cooling or heating the absorption liquid, including one or more serially connected heat exchangers, wherein the junction of the pipeline for withdrawal of the absorption liquid from the column is disposed above the junction of the pipeline into the first heat exchanger in the flow direction, wherein the pipeline also includes a dumped bed

Systems and methods for selectively removing hydrogen sulfide from a feed gas stream. The systems include an absorber-heat exchanger (ABHEX) assembly configured to exchange thermal energy between a mixed stream and a thermal management fluid stream. The ABHEX assembly defines a mixed stream volume and a thermal management fluid stream volume. The ABHEX assembly includes an isolation structure that maintains fluid separation between the mixed stream and the thermal management fluid stream and facilitates thermal communication between the mixed stream and the thermal management fluid stream. The ABHEX assembly is configured to receive and to mix the feed gas stream and a lean solvent stream to generate the mixed stream, to separate the mixed stream into a product gas stream and a rich solvent stream, and to cool the mixed stream. The methods include methods of operating the systems.

A carbon capture system for carbon dioxide (CO.sub.2)-thermal swing adsorption (TSA) includes an engine configured to produce a hot exhaust; a plurality of capture vessels that are configured to be respectively cycled through a plurality of stages of a CO.sub.2-TSA process; an N.sub.2 heat exchanger configured to receive the hot exhaust; and an N.sub.2 turbocharger coupled to the N.sub.2 heat exchanger. The N.sub.2 turbocharger is configured to receive N.sub.2 gas from a first capture vessel, heat the N.sub.2 gas via the N.sub.2 heat exchanger through a thermal exchange with the hot exhaust to produce a heated N.sub.2 gas, and provide the heated N.sub.2 gas to a second capture vessel in order to dry capture media of the second capture vessel.

A capture vessel is provided that is configured to capture carbon dioxide (CO.sub.2) according to a thermal swing adsorption (TSA) process. The capture vessel includes capture media that are configured to adsorb CO.sub.2 from an exhaust gas during a CO.sub.2 capture stage to produce a first N.sub.2 gas that exits the capture vessel, receive a mixed stream of CO.sub.2 and water vapor during a wet regeneration stage, adsorb water from the mixed stream of CO.sub.2 and water vapor and release adsorbed CO.sub.2 during the wet regeneration stage to produce a CO.sub.2 stream, receive a first heated N.sub.2 gas and release adsorbed water due to evaporation caused by the first heated N.sub.2 gas during a drying stage, and receive a cooled gas during a cooling stage such that an absorption capacity of the capture media for CO.sub.2 capture is increased for a next CO.sub.2 capture stage.