A process for component separation in a polymer production system, comprising: separating a polymerization product stream into a gas stream and a polymer stream; contacting the polymer stream with a purge gas to yield a purged polymer stream and a spent purge gas stream; introducing the spent purge gas stream to a compressor to produce a compressed gas stream; introducing the compressed gas stream to a first separation unit to produce a first hydrocarbon stream and a membrane unit feed stream; introducing the membrane unit feed stream to a membrane unit to produce a first recovered purge gas stream and a retentate stream; introducing the retentate stream to a second separation unit to produce a second hydrocarbon stream and a PSA unit feed stream; and introducing the PSA unit feed stream to a PSA unit to produce a second recovered purge gas stream and a tail gas stream.

Several embodiments of the present technology are directed to the removal of one or more air pollutants using cooling and/or calcium-containing particles. In some embodiments, a method for removing air pollutants comprises flowing a gas stream having calcium-containing particles and one or more of mercury or hydrochloric acid molecules, and cooling the gas stream, thereby causing at least a portion of the calcium-containing particles to adsorb to the mercury and/or hydrochloric acid molecules in the gas stream. The method can further comprise, after cooling the gas stream, filtering the gas stream to remove at least a portion of the calcium-containing particles having adsorbed mercury and hydrochloric acid.

Embodiments of the invention are directed to methods, processes, and systems for safely and reliably purifying hydrogen from a gas mixture containing hydrogen and oxygen.

Described are methods, devices, and systems useful for removing gaseous ammonia from a gas mixture at a pressure in an ambient pressure range by allowing the ammonia to adsorb onto a solid adsorbent, as well as related systems and methods.

Presented invention relates to a compact oxygen generator having a reduced size and reduced noise. The oxygen generator includes an upper heat sink, a lower heat sink, an air filter for filtering air introduced inside the oxygen generator, a solenoid valve for receiving the filtered air from the air filter, a zeolite module bed for separating nitrogen and oxygen from the filtered air received from the solenoid valve, and a vacuum pump supplied with the oxygen from the zeolite module bed through one discharge pipe, and supplied with the nitrogen through another discharge pipe via a vacuum chamber. The vacuum chamber ensures a specific amount of the nitrogen is supplied in a regular manner to the vacuum pump to block noise which would otherwise be generated due to the pressure change in the vacuum pump. The oxygen generator includes an internal sound insulating box for mounting the vacuum pump therein.

In a method for operating an adsorption device a laden gas stream is fed to an inlet of a sorption buffer device. In the device the laden gas stream passes through a sorbent for receiving a loading of sorbable substance along a sorption path from the inlet to an outlet. The sorbable substance passes from the gas stream to the sorbent, or vice versa, depending on the loading of the gas stream and the sorbent. During a phase of elevated loading, a region with an elevated loading of the sorbent extends from the inlet along the sorption path. During a phase of reduced loading, the region with the elevated loading of the sorbent is shifted in the direction toward the outlet. Length of the sorption path and quantity of the sorbent in the sorption buffer device are selected for accommodating at least three different regions of elevated loading.

A rapid cycle pressure swing adsorption (RCPSA) air purification process, apparatus, and device for the removal of at least one of water, carbon dioxide, nitrous oxide, and one or more hydrocarbons from a feed air stream prior to cryogenic air separation.

A system for enhancing adsorption of contaminated vapors to increase treatment capacity of a regenerable, synthetic adsorptive media. The system includes an inlet configured to receive a flow of contaminated vapors. One or more vessels are coupled to the inlet, the one or more vessels each including a regenerable, synthetic adsorptive media therein, are configured to remove contaminants from the vapors by adsorption. A vapor cooling subsystem is coupled to the inlet, and configured to cool the flow of contaminated vapors, thereby increasing the treatment capacity of the regenerable synthetic adsorptive media.

In one embodiment, a carbon dioxide capturing system includes an absorber configured to include a first contact portion that brings a combustion exhaust gas containing carbon dioxide into contact with an absorbing liquid containing an amine compound, cause the absorbing liquid to absorb at least a portion of the carbon dioxide in the combustion exhaust gas at the first contact portion, and release the combustion exhaust gas. The system further includes a washing apparatus configured to include a second contact portion that brings the combustion exhaust gas released from the first contact portion of the absorber into contact with a washing liquid, and configured such that the combustion exhaust gas and the washing liquid are individually fed to an upstream side of the second contact portion.

A system for enhancing adsorption of contaminated vapors to increase treatment capacity of a regenerable, synthetic adsorptive media. The system includes an inlet configured to receive a flow of contaminated vapors. One or more vessels are coupled to the inlet, the one or more vessels each including a regenerable, synthetic adsorptive media therein, are configured to remove contaminants from the vapors by adsorption. A vapor cooling subsystem is coupled to the inlet, and configured to cool the flow of contaminated vapors, thereby increasing the treatment capacity of the regenerable synthetic adsorptive media.