The present invention relates to a method and a system for the treatment of exhaust gas from industrial processes comprising at least the following consecutive steps: a) passing an exhaust gas comprising volatile organic compounds (VOCs) and/or amines through a catalytic zone at elevated temperatures, said catalytic zone comprises a deNO.sub.x-catalyst and an oxidation catalyst thereby providing a first treated gas stream, and b) subjecting the first treated gas stream to ultraviolet radiation in order cause photooxidation.

An efficient long-service-life blowing method include the steps of introducing vanadium extraction converter flue gas and decarburization converter flue gas into an oxygen combustor; obtaining first-purity CO.sub.2—N.sub.2 mixed gas through the vanadium extraction converter flue gas; obtaining second-purity CO.sub.2—N.sub.2 mixed gas through the decarburization converter flue gas; obtaining O.sub.2—CO.sub.2—N.sub.2 mixed gas through the decarburization converter flue gas; obtaining first-purity CO.sub.2 gas through the second-purity CO.sub.2—N.sub.2 mixed gas; and using the first-purity CO.sub.2—N.sub.2 mixed gas for bottom blowing of the vanadium extraction converter, using the second-purity CO.sub.2—N.sub.2 mixed gas as a carrier gas for blowing iron ore powder into the vanadium extraction converter, and using the O.sub.2—CO.sub.2—N.sub.2 mixed gas and the first-purity CO.sub.2 gas as a carrier gas for bottom blowing of the decarburization converter and bottom injecting of lime powder into the decarburization converter.

The invention relates to a method for treating metal strip in a directly fired furnace through which the metal strip is guided. The furnace is fired directly by gas burners and has a non-fired zone through which the exhaust gases from the fired zone flow and thus heat the metal strip. After leaving the non-fired zone, the exhaust gases from the furnace undergo post-combustion in an afterburner chamber. According to the invention, methane is injected into the non-fired zone, which causes nitrogen oxides contained in the waste gas to be converted into hydrogen cyanide.

In one embodiment, a carbon dioxide capturing system includes an absorber to absorb CO2 from first gas into lean liquid, and produce rich liquid that is the lean liquid absorbing the CO2 and second gas that is the first gas removing the CO2, and a regenerator to separate third gas including the CO2 from the rich liquid flowing from the absorber, and provide the lean liquid and the third gas. The system further includes a flowmeter to measure a flow rate of the third gas, a liquid level gauge to measure a liquid level of the lean liquid and/or the rich liquid, and a controller to regulate a quantity of heat energy supplied to the regenerator based on the flow rate of the third gas, and regulate a total amount of the lean liquid and the rich liquid in the system based on the liquid level.

The subject invention provides systems and methods for capturing carbon dioxide in a cyclic process of mechano-chemical reactions. The subject invention also provides systems and methods for synthesizing siderite, by means of mechano-chemical reactions, using mill rotation. Siderite acts as an efficient reversible sorbent and can be decomposed, generating magnetite, carbon and/or metallic iron as well as pure carbon dioxide. Said systems and methods employing carbon dioxide capture/release reactions in the carbonation-calcination cycles are suitable for using in any iron, steel and non-steel industries to reduce carbon dioxide emissions into the atmosphere.

The invention pertains to processes for separating gases, acid gas, hydrocarbons, air gases, or combinations thereof. The processes may employ using a liquid phase cloud point with or without subsequent liquid-liquid separation. In some embodiments membranes can be employed with reverse osmosis to regenerate a solvent and/or an antisolvent. In some embodiments thermal switching phase changes may be employed during absorption or desorption to facilitate separation.

This patent relates to the conversion of the Carbon Dioxide (CO2) in exhaust stack emissions from the combustion of fossil fuels or other CO2 emitting processes into Bulk Chemicals used in multiple industries. The Process Block is comprised of: Particulate Filter/Precipitator Unit, as required Condenser/Exhaust Stack Heat Recovery Unit Exhaust Gas' Pressure Blower Unit Chemical Solution Holding Vessels CO2 Reaction Units Chemical Mixing Vessels Process Pumps Evaporator Train Dry Bulk Chemical on site Temporary Storage prior to load out to Rail Cars or Semi Truck Bulk Trailer(s) Process Accelerator Enhancement Technology, as required, and deemed feasible

The present invention concerns a method of decarbonating a gas stream containing from 15% to 60% carbon dioxide, by passage of the said gas stream over a zeolitic agglomerate comprising at least one binder and at at least one zeolite, and having a mesoporous volume of between 0.02 cm.sup.3.Math.g.sup.1 and 0.15 cm.sup.3.Math.g.sup.1 and a mesoporous volume fraction of between 0.1 and 0.5, preferably between 0.15 and 0.45.

The invention provides for the optimal utilization of gas by a fermentation process, whereby the various components within the gas stream are separated to increase the efficiency of the microorganisms. The invention is capable of tailoring the composition of the gas being used by the fermentation process so as to enhance the production of various products. The invention is capable of applying such controlled separation and utilization of gas to produce different products in two parallel fermentation processes. The invention is also capable of applying such controlled separation and utilization of gas to produce one product in a first fermentation process, which may be converted to a different product in a second fermentation process. The invention is additionally capable of mitigating culture inhibition.

The present invention provides a method for treating a gas, comprising: step (A): collecting a gas comprising carbon dioxide and fine particulate matter; step (B): rinsing the gas with water to obtain a rinsed gas; and step (C): contacting the rinsed gas with a basic solution in a way of co-current flow to absorb the carbon dioxide in the rinsed gas by the basic solution to obtain a treated gas and a weak basic solution; wherein the pH value of the basic solution is between 9 and 14, and the pH value of the weak basic solution is between 8 and 8.5. The method can reduce the content of both fine particulate matter and carbon dioxide.