Ultralow smoke exhausting equipment and technology in non-electric field

Abstract

The invention discloses ultralow smoke exhausting equipment which comprises a built-in flow guiding plate, a main body tower of a filtering dust removing part, a front RCO / RTO device, a rear RCO / RTO device and an SCR device provided with an SCR catalyst, wherein a smoke inlet is arranged in an outer wall face of the bottom of the main body tower, a smoke outlet is arranged in the top of the main body tower, a desulfurizing agent spray device is arranged outside the smoke inlet, the smoke outlet is respectively connected with the front RCO / RTO device and the rear RCO / RTO device through an inletthree-way valve, the front RCO / RTO device and the rear RCO / RTO device are heat storage type reactors and are connected with the SCR device through a feeding pipeline and a discharging pipeline, the feeding pipeline is further provided with a reducing agent atomizing device, the discharging pipeline is provided with the SCO reactor with the built-in SCO catalyst, and the front RCO / RTO device and the rear RCO / RTO device are respectively connected to a clean smoke outlet. The ultralow smoke exhausting equipment can be applied to removing dust, desulfurizing oxide, denitrifying and removing VOCsgas and treating foul smell gas of ammonia gas and the like. According to the ultralow smoke exhausting equipment, varieties of smoke treating functions are integrated; furthermore, the ultralow smokeexhausting equipment is suitable for coprocessing devices and technologies in the non-electric field.

Description

technical field [0001] The invention relates to the technical field of air pollution control, in particular to a device and process for synergistic ultra-low emission of flue gas multi-pollutants that can be applied to non-electric fields such as cement plants, biomass power plants, and steel plants. Background technique [0002] The complex and changeable flue gas working conditions are the main difficulties in the treatment of flue gas pollutants in the non-electric field. With the basic completion of ultra-low emissions of coal-fired units, ultra-low emissions in non-electric fields have been carried out in key areas such as iron and steel, and will inevitably be extended to cement, glass, biomass power plants, waste incineration and other fields in the future. Compared with coal-fired flue gas, flue gas in non-electric fields has a lower temperature and complex composition. In addition to sulfur oxides, nitrogen oxides (NOx), and dust, part of the flue gas also contains ...

AI Technical Summary

Problems solved by technology

[0003] Existing technologies are difficult to achieve ultra-low emission control in the non-electric field

Although the treatment technologies for dust and sulfur oxides are mature, they often require the construction of special treatment equipment, which will lead to high environmental protection costs; even with the existing integrated technology, there are still flue gas pollutants that do not match the non-electric field Governance, inability to perfect the exhausted smoke pollution and other issues

[0004] For NOx, the existing low-temperature denitrification technology has poor stability, and the denitrification efficiency of SNCR technology is low, and the denitrification effect is difficult to guarantee

For VOCs gas, there has not been a well-recognized technology in China

As for the malodorous gases such as ammonia in the flue gas in the non-electric field, environmental protection enterprises have not yet attracted enough attention

If a separate removal device is installed for each of the above pollutants, it will greatly increase the environmental protection cost of the enterprise

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