A device and a method produces fertilizer from the exhaust gases of a production system, for example a system for producing cement. The exhaust gases are completely converted such that the exhaust gases are not released into the environment. For this purpose, the exhaust gases are introduced directly into the device from the production system. Exhaust gases such as NO.sub.x and/or SO.sub.2 are first oxidized in the device and then reprocessed into NH.sub.4NO.sub.3 or (NH.sub.4).sub.2SO.sub.4. CO.sub.2 is reprocessed into NH.sub.4HCO.sub.3 in the device while nitrogen is converted into ammonia, and the ammonium, among others, is used to produce NH.sub.4HCO.sub.3 from CO.sub.2.

The invention relates to a method for recovery of urea dust and ammonia from a gas stream by contacting said gas stream with an aqueous sulphuric acid solution, thus forming an acid solution of ammonium sulphate and urea, characterized in that the acid solution is concentrated to a melt comprising less than 5 wt % of water, which melt is subsequently transferred into solid particles comprising urea and ammonium sulphate.

An integrated device and a method for continuously capturing, storing and separating a flue gas in an underground rock stratum are provided. An injection well, a monitoring well and an emission well are arranged in sequence at locations from near to far from a flue gas emission source. The injection well, the monitoring well and the emission well are respectively drilled to different depths in a storage rock stratum. A horizontal injection channel is arranged at bottom end of the injection well. During migrating the flue gas in the storage rock stratum, CO.sub.2 and sulfur nitride are absorbed by a rock porous medium and gradually enriched, and meanwhile, the CO.sub.2 and sulfur nitride, after chemically reacting with water, minerals and biomass in a rock, are gradually mineralized to achieve storage; and separated N.sub.2 is gradually migrated upwards to the emission well to achieve separation.

An integrated device and a method for continuously capturing, storing and separating a flue gas in an underground rock stratum are provided. An injection well, a monitoring well and an emission well are arranged in sequence at locations from near to far from a flue gas emission source. The injection well, the monitoring well and the emission well are respectively drilled to different depths in a storage rock stratum. A horizontal injection channel is arranged at bottom end of the injection well. During migrating the flue gas in the storage rock stratum, CO.sub.2 and sulfur nitride are absorbed by a rock porous medium and gradually enriched, and meanwhile, the CO.sub.2 and sulfur nitride, after chemically reacting with water, minerals and biomass in a rock, are gradually mineralized to achieve storage; and separated N.sub.2 is gradually migrated upwards to the emission well to achieve separation.

A system comprising a pumping system configured to pump respective exhaust gases from each of a plurality of chemical etching process chambers and to combine the exhaust gases to provide a combined exhaust gas, and a noble gas recovery system configured to process the combined exhaust gas to remove one or more noble gases therefrom.

A system comprising a pumping system configured to pump respective exhaust gases from each of a plurality of chemical etching process chambers and to combine the exhaust gases to provide a combined exhaust gas, and a noble gas recovery system configured to process the combined exhaust gas to remove one or more noble gases therefrom.

A method includes: processing a wafer by a wet bench apparatus; forming particulates in an exhaust of the wet bench apparatus; flowing the exhaust to a first scrubbing chamber of a scrubber; removing a first portion of the particulates from the exhaust by flowing the exhaust to a second scrubbing chamber via a structured packing material; cooling the second scrubbing chamber by a vortex tube; and removing a second portion of the particulates from the exhaust by a structured demister adjacent the second scrubbing chamber.

A method includes: processing a wafer by a wet bench apparatus; forming particulates in an exhaust of the wet bench apparatus; flowing the exhaust to a first scrubbing chamber of a scrubber; removing a first portion of the particulates from the exhaust by flowing the exhaust to a second scrubbing chamber via a structured packing material; cooling the second scrubbing chamber by a vortex tube; and removing a second portion of the particulates from the exhaust by a structured demister adjacent the second scrubbing chamber.

Systems and/or methods are provided for the capture of carbon dioxide from flue gas generated within a building.

Systems and/or methods are provided for the capture of carbon dioxide from flue gas generated within a building.