Pre-dusting device for reduction denitrification system and treatment process of pre-dusting device

Abstract

The invention discloses a pre-dusting device for a reduction denitrification system and a treatment process of the pre-dusting device. The pre-dusting device comprises a dusting station and cleaning stations, the cleaning stations are symmetrically positioned on the left side and the right side of the dusting station, openable sealing plates are arranged among the dusting station and the two cleaning stations, the cleaning stations comprise U-shaped sealing frames, a plurality of cleaning sprayers and first filter screens, openings of the sealing frames face the dusting station, the cleaning sprayers are arranged at the inner tops of the sealing frames, the first filter screens are positioned below the cleaning sprayers and slidably connected with the sealing frames, the dusting station comprises a catalytic reaction layer and a second filter screen, the catalytic reaction layer is connected with the bottom edge of the sealing frames, the second filter screen is positioned on the catalytic reaction layer, and the first filter screens and the second filter screen are connected together and driven to slide by a driving mechanism. The service cycle of catalysts can be prolonged, and the dusting device is conveniently cleaned.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment equipment, and in particular relates to a pre-dust removal device of a reduction and denitrification system and a treatment process thereof. Background technique [0002] In glass production enterprises, glass melting furnace is a commonly used industrial furnace. In the process of glass production, fuel oil, gas and natural gas are mainly used as fuel, and a large amount of polluting gas will be emitted during the working process, the main pollutant of which is dust. , SO 2 and NOx, according to national regulations, NOx emissions are not higher than 700mg / Nm 3 , SO 2 Emission not higher than 400mg / Nm 3 , dust emission not higher than 50mg / Nm 3 , local standards are generally stricter than this standard, especially the 2+26 key environmental monitoring cities in my country are much stricter. [0003] At present, selective catalytic reduction (SCR) denitrification technology is us...

AI Technical Summary

Problems solved by technology

However, in actual use, the sodium sulfate in the high-temperature flue gas reacts with gaseous sulfur trioxide to produce highly viscous, highly corrosive dust, which is easy to adhere to and corrode the dust removal plate, and the dust removal effect is poor. It brings a lot of trouble to dust removal pole vibration cleaning and ash hopper cleaning, especially when these cleaning devices break down and need to be repaired, the high-temperature electrostatic precipitator must be stopped, which will cause the entire environmental protection system to stop

In order to avoid the stoppage of the entire environmental protection system, some enterprises set up double high-temperature electrostatic precipitators with one open and one standby, which doubles the area occupied, greatly increases the construction cost, and also increases the cost of environmental protection operation and maintenance.

[0004] At present, the dust removal device in front of the glass melting furnace flue gas denitrification facility has a large investment cost, occupies a large area, and is inconvenient to use and maintain. Therefore, it is urgently needed to be small in size, high in efficiency, and low in cost, which is suitable for the glass melting furnace flue gas denitrification facility. Advanced high-efficiency pre-dust removal technology and devices

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