摘要:
A chemical looping system that contains an oxidizer and a reducer is in fluid communication with a gas purification unit. The gas purification unit has at least one compressor, at least one dryer; and at least one distillation purification system; where the gas purification unit is operative to separate carbon dioxide from other contaminants present in the flue gas stream; and where the gas purification unit is operative to recycle the contaminants to the chemical looping system in the form of a vent gas that provides lift for reactants in the reducer.
摘要:
Apparatuses and systems for reduction and elimination of toxic gases emitted from a motor vehicle or industrial exhaust system. The systems may be single-tier or two-tier, and include at least one direct contact heat exchanger wherein exhaust gas is condensed or dissolved in cold moist air vapor. Uncondensed and undissolved gases may be recirculated into the direct contact heat exchanger to be treated again. The systems also include at least one post-treatment tank wherein condensate liquids and gas solutions are subject to agglomeration and are finally discharged into the environment as a clean liquid. The systems provided herein may complement the existing catalytic converters used in motor vehicles.
摘要:
A method includes injecting a feed stream including a hydrogen halide and water into a vapor liquid separator. The feed stream has a liquid phase and a vapor phase. The method further includes separating the liquid phase and the vapor phase in the vapor liquid separator to form condensate and vapor, and discharging the condensate from the vapor liquid separator in a liquid stream. The method also includes discharging the vapor from the vapor liquid separator in a vapor stream.
摘要:
A mechanical filter-based air pollution control system for removing particle and gas phase pollutants in a waste airstream exhausted from commercial cooking operations is described, which includes a housing enclosing at least three filter stages to remove particle and gas pollutants in the airstream. The example system may include a fogger assembly that sprays fog droplets into the waste airstream to condense a portion of gas phase pollutants into condensed particles, a wash mechanism including spray nozzles to wash surfaces of the first stage filter to remove grease therefrom, and injection means for injecting activated ozone, which comprises ozone with a surplus of hydroxyl radicals, into the housing to initiate advanced oxidation processes (AOPs) to decompose particle and gas phase pollutants within the waste airstream in the filters. Where activated ozone is employed, the system includes a fourth stage filter that adsorbs and retains gas phase pollutants for subsequent oxidation.
摘要:
Liquefaction systems and associated processes and methods are disclosed herein. Liquefaction systems in accordance with the present technology can include a liquefier positioned to liquefy gases from an emission stream. The liquefier can include a compressor configured to compress a first gas to produce a first liquid, and to compress a second gas to produce a second liquid. The first liquid can be directed to a first collection tank and the second liquid can be directed to a second collection tank. In some embodiments, a liquefaction system can direct a portion of a compressed liquid to a liquefier to pre-cool gases in the emission stream and/or to cool gases at various stages of compression.
摘要:
The invention relates to a system for trapping atmospheric emissions, made up of a liquefaction tank which contains a liquid that traps the dust, smokes or gas, which are injected into the same through a main duct, to which the source of the emission to be trapped is connected, said duct including a first fan which operates by absorbing and propelling the dust, smoke and gas, guiding same into the liquefaction tank, said duct being sealed at the end of thereof, the side walls of the duct comprising at least ten outlet openings, the invention also comprising a system with at least two walls with the same effect and perforations, this causing the liquefaction of the trapped material, likewise, the invention comprises a cooling system, which guides the liquid from the tank into a serpent coil and from there to a pump which generates the recirculation of the liquid; at the top of the tank, the invention comprises an outlet duct via which the gases produced by liquefaction are guided into a compressor, which has the function of compressing the gases and injecting same into a first gas-storage tank.
摘要:
An integrated apparatus for separating a mixture of carbon dioxide and at least one other gas and for separating air by air distillation is provided. The apparatus includes a CO2 separation unit configured to separate the mixture, an air separation unit configured to separate air by cryogenic distillation, a water cooling tower that operates by direct contact, a line for sending water to the top of the tower, a line for sending at least one portion of the nitrogen-enriched gas stream to a lower level of the tower, a cooled water line for withdrawing cooled water from the tower and means for cooling the air upstream of the air separation unit, the cooled water line being connected to means for cooling the air upstream of the air separation unit and to the inlet and/or to the outlet of the unit for separating the gaseous mixture.
摘要:
Condensable materials, such as but not limited to tungsten fluoride (WF6), can be used deposit films in a chemical vapor deposition (CVD) process. Described herein are methods to collect and reuse the condensable materials that are unreacted in the production process rather than treat these materials as waste. In one embodiment, when a condensable material, such as gaseous WF6, is not supplied to the CVD reactor, it is redirected to a recovery cabinet for capture.
摘要:
Method and compositions useful for removal of mercury from a flue gas stream with relatively high concentrations of acid gas precursors and/or acid gases. The method includes contacting the flue gas stream with a multi-functional agent, where the multi-functional agent includes a salt having a cation of valency 3 or higher. A composition comprises a (1) sorbent material such as powdered activated carbon which will ultimately capture and sequester oxidized mercury, (2) a multi-functional agent that protects the sorbent core from unfavorable reaction conditions or inhibitors, oxidizes or helps catalyze the oxidation of elemental mercury, and/or amalgamates with elemental mercury to make it easier to capture, among other benefits, and optionally (3) a halogen such as in the form of a halide salt that helps facilitate the oxidation of elemental mercury into its oxidized form.
摘要:
The present invention are methods for removing preselected substances from a mixed flue gas stream characterized by cooling said mixed flue gas by direct contact with a quench liquid to condense at least one preselected substance and form a cooled flue gas without substantial ice formation on a heat exchanger. After cooling additional process methods utilizing a cryogenic approach and physical concentration and separation or pressurization and sorbent capture may be utilized to selectively remove these materials from the mixed flue gas resulting in a clean flue gas.