The present invention relates to the filtering of fumes emitted by industrial processes such as those used in iron and steel works, refineries, waste-to-energy plants and the like and in particular relates to a filtering device for fine and ultrafine dust particles and other polluting agents.

The present invention relates to the filtering of fumes emitted by industrial processes such as those used in iron and steel works, refineries, waste-to-energy plants and the like and in particular relates to a filtering device for fine and ultrafine dust particles and other polluting agents.

An absorption column is equipped with: a CO.sub.2 absorption section absorbing CO.sub.2 from CO.sub.2-containing exhaust gas using a lean solution; a main rinse section recovering an entrained CO.sub.2 absorbent using rinse water; a rinse water circulation line circulating a rinse water containing the CO.sub.2 absorbent recovered in a liquid storage section of the main rinse section; a pre-rinse section provided between the CO.sub.2 absorption section and the main rinse section; a rinse section extraction liquid supply line extracting a portion of the rinse water containing the CO.sub.2 absorbent from the rinse water circulation line, and introducing the same into a reflux section of an absorption liquid regeneration tower; and a refluxed water supply line extracting a portion of refluxed water, introducing the same as pre-rinse water for the pre-rinse section, and connected on the pre-rinse section side.

Systems and methods for the use of highly reactive hydrated lime (HRH) in circulating dry scrubbers (CDS) to remove sulfur dioxide (SO.sub.2) from the flue gas.

Systems and methods for the use of highly reactive hydrated lime (HRH) in circulating dry scrubbers (CDS) to remove sulfur dioxide (SO.sub.2) from the flue gas.

The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for capturing, oxidizing, lowering the concentration and/or level of, and/or eliminating mercury present in any flue gas and/or combustion gas stream. In one embodiment, the method and/or apparatus of the present invention is applied to boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices that have connected thereto at least one type of flue gas, or combustion gas, scrubber device (i.e., a wet scrubber or a dry scrubber).

The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for capturing, oxidizing, lowering the concentration and/or level of, and/or eliminating mercury present in any flue gas and/or combustion gas stream. In one embodiment, the method and/or apparatus of the present invention is applied to boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices that have connected thereto at least one type of flue gas, or combustion gas, scrubber device (i.e., a wet scrubber or a dry scrubber).

There is provided an exhaust gas processing apparatus which improves the removal rate of harmful substances and also achieves a compact size. An exhaust gas processing apparatus (10) absorbing gas by creating contact between gas and liquid includes: an absorbing tower main body (11) in which an internal space is formed; a spray apparatus (12) which sprays liquid in a prescribed region in an up/down direction of the internal space; and a gas supply apparatus (13) which introduces gas into the absorbing tower main body (11), wherein the spray apparatus (12) includes: a trunk pipe (12b) which extends in the up/down direction in the prescribed region of the internal space; branch pipes (12c) which are connected to the trunk pipe (12b) and extend towards the inner wall of the absorbing tower main body (11); and spray nozzles (12d) which spray liquid supplied from the branch pipes (12c), wherein the spray nozzles (12d) are installed such that an angle formed between the center line of the spraying region of the spray nozzle (12d), and the lengthwise direction of the branch pipe (12c) is an acute angle.

There is provided an exhaust gas processing apparatus which improves the removal rate of harmful substances and also achieves a compact size. An exhaust gas processing apparatus (10) absorbing gas by creating contact between gas and liquid includes: an absorbing tower main body (11) in which an internal space is formed; a spray apparatus (12) which sprays liquid in a prescribed region in an up/down direction of the internal space; and a gas supply apparatus (13) which introduces gas into the absorbing tower main body (11), wherein the spray apparatus (12) includes: a trunk pipe (12b) which extends in the up/down direction in the prescribed region of the internal space; branch pipes (12c) which are connected to the trunk pipe (12b) and extend towards the inner wall of the absorbing tower main body (11); and spray nozzles (12d) which spray liquid supplied from the branch pipes (12c), wherein the spray nozzles (12d) are installed such that an angle formed between the center line of the spraying region of the spray nozzle (12d), and the lengthwise direction of the branch pipe (12c) is an acute angle.

A fluid injection system includes a mixing chamber locatable in an exhaust gas conduit upstream of a selective catalytic reduction device for providing an exhaust gas flow path and space for receiving injected fluid, an injector with a plurality of bundled capillary tubes each having an inlet configured to receive a fluid for injection into the chamber and an outlet wherein the injector is mounted on the chamber with the tube outlets in fluid communication with the chamber space, a base plate disposed in the chamber spaced from and aligned with the bundled tubes, a voltage supply connected to the tubes and to the base plate for providing a charge to the tubes and to the base plate to create an electric field to the fluid in the tubes, and a valve disposed on a wall of the chamber for at least one of priming and purging of the tubes.