An integrated device for plasma flue gas desulfurization, denitrification, dust removal and mercury removal

Abstract

The invention discloses an integrated device for plasma flue gas desulfurization, denitrification, dust removal, and mercury removal, which includes a housing, a purification device and a control system; A coagulation electric field device for forming a coagulation electric field and a reactive water device for providing water mist particles to the coagulation electric field, the plasma reaction device includes a plasma electric field device for forming a plasma reaction electric field and a device for washing pollutants collected by the plasma electric field device Rinsing water device; the control system includes a coagulation power supply, a plasma power supply, and a controller for controlling the water spray volume of the reaction water device and the power supply power of the power supply; the above-mentioned device not only has a simple structure and a small footprint, but also adopts a wet reaction, which can form Aerosol, for SO 2 , NO X The absorption of such gas pollutants provides a reaction surface, improves reaction efficiency, reduces energy consumption and cost, and has better economy.

Description

technical field [0001] The invention relates to the technical field of flue gas purification equipment, in particular to an integrated device for plasma flue gas desulfurization, denitrification, dust removal, and mercury removal. Background technique [0002] In recent years, due to the increasingly severe situation of environmental protection work, the national and local pollutant discharge standards have become more stringent, not only SO 2 , NO X And the emission concentration limits of traditional pollutants such as dust will be further reduced. In the future, mercury and PM2.5 in flue gas will also be required to be controlled. [0003] In order to meet the ever-increasing pollutant discharge standards, industrial flue gas emission enterprises such as thermal power plants have undergone repeated environmental protection upgrades, and the factory area is often in short supply. Therefore, a new type of plasma fume with a small footprint The integrated purification tech...

AI Technical Summary

Problems solved by technology

SO 3 and HNO 3 can be further combined with NH added to the reactor 3 The gas is converted into ammonium sulfate and ammonium nitrate. Ammonium sulfate, ammonium nitrate and HgO are all solid substances, which can be collected in the electrostatic field generated by gas discharge, so as to realize the desulfurization, denitrification and dust removal functions of flue gas. However, the chemical The reaction occurs in the gas phase and is a dry reaction. The energy consumption of the device is relatively high, and the power consumption is about 2% of the power generation of the power plant.

Although there have been improvements to this method recently, combining plasma with a catalyst to remove SO 2 and NO X , but the preparation of the catalyst is complicated and expensive, and it is not suitable for large-scale engineering applications

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