Active carbon fiber-based industrial flue gas desulfurization and denitrification device and method

Abstract

The invention discloses an active carbon fiber-based industrial flue gas desulfurization and denitrification device and method. The device comprises a reaction tower body, wherein a sulfuric acid collection device, a gas feeding region I, a grating I, a desulfurization region, a gas feeding region II, a grating II, a denitrification region and a gas discharging region are arranged in the reaction tower body in sequence from the bottom to the top; a gas feeding pipe I and a gas feeding pipe II are further arranged on the side wall of the reaction tower body; a gas outlet is formed in the top of the reaction tower body; the desulfurization / denitrification region is an active carbon fiber desulfurization / denitrification catalyst reaction bed layer. The method is realized through the device; flue gas passes through all regions in the reaction tower body in a way of entering from the bottom and leaving from the top, so that sulfur dioxide and nitric oxide in the flue gas are respectively turned into sulfuric acid and nitrogen / water. The desulfurization and denitrification device provided by the invention is simple in structure, easy to operate, small in occupied area and low in cost; the method is simple and convenient in technological process, high in desulfurization and denitrification efficiency and worthy of being popularized in the industry.

Description

technical field [0001] The invention belongs to the technical field of industrial flue gas purification and treatment, and in particular relates to an industrial flue gas desulfurization and denitrification device and method based on activated carbon fibers. Background technique [0002] Sulfur dioxide and nitrogen oxides are the main pollutants in the atmosphere, which are very harmful to human health and are also the main cause of acid rain. my country SO 2 The total emission of NOx and NOx ranks first in the world, and acid rain and smog appear in different degrees in various places, becoming the acid rain heavily polluted area after Europe and North America. Therefore, the removal and treatment of sulfur dioxide and nitrogen oxides is a major issue in the field of environmental protection in my country. [0003] At present, desulfurization and denitrification commonly used in industry need to be treated separately. Generally, denitrification is carried out before the d...

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Problems solved by technology

The device uses activated carbon as the catalyst, adopts dry oxidation desulfurization + reduction denitrification, and the operating cost of the equipment is relatively low. However, this method requires regeneration of activated carbon after desulfurization, which affects the service life of activated carbon and has certain application limitations.

[0008] At the same time, the desulfurization and denitrification technologies include the auto-oxidation-reduction process (CN103263848A) and the photocatalytic redox process (CN104707475A) in addition to the wet oxidation acid production process, ozone oxidation process, and dry catalytic removal process proposed in the above-mentioned patents. The problems in the following aspects: 1. The efficiency of the oxidation process is not high; 2. The dry process needs to be regenerated; 3. Generally, one kind of pollution component is mainly treated, and the other is supplemented. The general efficiency of the auxiliary treatment component is 70%. Below; 4. The equipment is complex and occupies a large area

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