A bipolar corona discharge flue gas desulfurization and dust removal method and equipment thereof

Abstract

The invention discloses a bipolar corona discharge flue gas desulfurization and dust removal method and its equipment. The top of the flue gas desulfurization absorption tower is vertically fixed with a plurality of atomizing nozzles, and the upper end of each atomizing nozzle is connected to the The centrifugal pump outside the flue gas desulfurization absorption tower, the centrifugal pump is connected to the liquid storage tank containing the desulfurizing agent slurry, and directly below each atomizing nozzle is a corona discharge electrode placed horizontally, after all the corona discharge electrodes are connected in series Connect the negative high-voltage electrostatic generator, the left side wall of the flue gas desulfurization absorption tower is connected to the flue gas corona discharge treatment room, the flue gas corona discharge treatment room is connected to the flue gas generating device through the pipeline, and the flue gas corona discharge treatment room is equipped with awning The thorn electrode, the bottom of the thorn electrode is coaxially fixedly connected to the motor and connected to the positive high-voltage electrostatic generator through the wire; the present invention treats the smoke and the slurry droplet separately, so that they have charges of different polarities, and then make the two contact Mix to achieve the purpose of improving absorption efficiency.

Description

technical field [0001] The invention relates to flue gas treatment and purification technology, in particular to equipment and methods for desulfurization and dust removal treatment of flue gas. Background technique [0002] Combustion of fossil fuels emits a large amount of SO 2 , NOx and CO 2 and other harmful gases and a large number of fine particles, among them, SO 2 , NOx can cause acid rain and other serious damage to the ecological environment, and a large number of submicron particles in the particulate matter can easily enter the human lungs through the respiratory tract, causing serious respiratory diseases. Nowadays, a large number of flue gas desulfurization, denitrification and dust removal equipment can improve the cleanliness of flue gas emissions, but it also consumes a lot of energy and water resources. At present, it is mainly by increasing the proportion of absorbent, increasing the spray density, and charging the absorbent to improve the SO concentrat...

AI Technical Summary

Problems solved by technology

The above technologies are costly and complicated to operate, and the efficiency of flue gas desulfurization cannot reach the expected effect

[0003] The Chinese invention patent No. ZL200410066936.0 discloses a bipolar corona discharge smoke coagulation and electrostatic precipitator method and equipment, which proposes that the extremely fine dust particles in the dusty smoke pass through the positive and negative corona discharge areas , so that it is charged with positive and negative charges and coagulates each other and aggregates into larger particles, which are then input into the electrostatic precipitator for electrostatic precipitation. Good for sustained corona discharge

The Chinese invention patent No. ZL201110145966.0 discloses a swirling air intake type electrostatic spray wet flue gas desulfurization and dust removal device, which uses absorbent slurry to charge the slurry to improve the atomization effect of the slurry and make the droplets Charging, by adding additional mass transfer power to obtain a higher desulfurization effect and achieve the purpose of saving water resources consumption, but it only deals with the induction charging of droplets. In actual operation, induction charging is often caused by insulation difficulties. The charging is unstable; and it only charges the droplets, not the flue gas. When the droplets contact with the flue gas, the mass transfer driving force between the phases is insufficient

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