WO 2015/161676 A1

Method for removing nitrogen oxides in flue gas and nano flue gas denitration system

(22) 17.04.2015

(43) 29.10.2015

(57) A method for removing nitrogen oxides in a flue gas: (1) pretreating a flue gas containing nitrogen oxides in a pretreatment vessel, removing solid particles greater than 10 micrometers in diameter in the flue gas during the pretreatment, and oxidizing NO into NO2; (2) introducing the pretreated flue gas into a denitration vessel, where the nitrogen oxides react with an oxidizer to produce nitric acid; and, (3) discharging a purified gas from the denitration vessel. A nano flue gas denitration system characterized in being constituted by a pretreatment chamber and a denitration chamber. An output end of the pretreatment chamber is connected to an input end of the denitration chamber. Advantage: the method and system provided effectively convert nitrogen oxides into nitric acid; therefore, benefits from recycling far exceed operating costs of the equipment itself, thus allowing a user to acquire further profits. This is applicable in other industry markets, including cement plants, steel mill, municipal waste incineration plants, medical waste incineration plant, chlorine production plants, pulp and paper mills.

(71) Lin, Xiaoxiao, Beijing 100742 (CN); Che, Aileen Louise, Guangdong 523850 (CN)

(84) ARIPO (BW GH GM KE LR LS MW MZ NA RW SD SL ST SZ TZ UG ZM ZW), Eurasian (AM AZ BY KG KZ RU TJ TM), European (AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR), OAPI (BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN TD TG)

x

Related articles:

Issue 5/2022 TIANJIN CEMENT INDUSTRY DESIGN AND RESEARCH INSTITUTE CO. LTD.

Research progress of nitrogen oxides (NOx) control technology for industrial flue gas

1 Introduction With the development of the economy and the progress of technology, energy consumption is growing fast. Along with the increasing of energy consumption, atmospheric pollutants are...

more
Issue 8/2023 CN219424083 (U)

Cement kiln flue gas self-denitration device

(22) 14.04.2023 (43) 28.07.2023 (57) The utility model discloses a cement kiln flue gas self-denitration device, relates to the technical field of cement production, and solves the technical problem...

more
Issue 3/2022 WO 2022/021928 A1

Thallium poisoning-resistant core-shell honeycomb catalyst for cement kiln flue gas denitration and preparation method therefor

(22) 07.04.2021 (43) 03.02.2022 (57) Disclosed are a thallium poisoning-resistant core-shell honeycomb catalyst for cement kiln flue gas denitration and a preparation method therefor. Said catalyst is...

more
Issue 10/2018 PL420009 (A1)

Method and the system for cleaning waste gases from furnaces designed for firing clinker from nitrogen, sulfur and mercury oxides

(22) 28.12.2016 (43) 02.07.2018 (57) The subject of the application is a method of purification of flue gases from clinker burning furnaces from nitrogen oxides, sulfur and mercury oxides,...

more
Issue 12/2015 WO 2015/161674 A1

Method for removing heavy metals in flue gas and nano flue gas heavy metal removal equipment

(22) 17.04.2015 (43) 29.10.2015 (57) A method for removing heavy metals in a flue gas: (1) embedding a nanomaterial onto a fibrous substrate; (2) passing a flue gas containing heavy metals through the...

more