Device for cooperating evaporation of desulfurized wastewater flue and enhancing removal of fine particulates and SO3 (sulfur trioxide) and method thereof
A technology for desulfurization of wastewater and fine particles, which is applied in chemical instruments and methods, separation methods, and dispersed particle separation to achieve the effects of promoting evaporation, achieving synergistic removal, and promoting absorption
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[0025] Example 1
[0026] A device for synergistic desulfurization wastewater flue evaporation and enhanced removal of fine particles and sulfur trioxide. The device is installed on the flue of a boiler system and includes a desulfurization wastewater storage tank 1, an alkaline absorbent storage tank 2, an injection system, and a production system. The vortex system and the electrostatic precipitator 8. The injection system is composed of an alkaline absorbent solution storage tank 3, a metering pump 4, an air compressor 5, and a two-fluid atomizing nozzle 6. The pump 4 and the two-fluid atomizing nozzle 6 are connected in turn to form a liquid path, and the air compressor 5 is connected with the two-fluid atomizing nozzle 6 to form a gas path; the two-fluid atomizing nozzle 6 is arranged in the flue gas passage, and the two-fluid atomization The distance between the nozzle 6 and the first-stage spoiler vortex is 1~3m, and the distance between the last-stage vortex and the entra...
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[0029] Example 2
[0030] Dust-containing flue gas is produced by coal-fired boilers, and the flue gas volume is 300Nm 3 / h, after the boiler runs stably, add a certain amount of fly ash and SO to the flue gas 3 , To ensure the PM required for testing 2.5 And SO 3 concentration. Before using the method and device of the present invention, the flue gas directly enters the electrostatic precipitator, and the electric scale low-voltage impactor ELPI is used to test the PM online 2.5 Concentration and particle size distribution, after testing, PM at the entrance of electrostatic precipitator 2.5 The particle size distribution is a typical bimodal distribution, the first peak appears at about 0.1um, and the number concentration is 7.1´10 6 / cm 3 , Another peak appears at about 1um, the number concentration is 1.9´10 6 / cm 3 , PM 2.5 The mass concentration is 250mg / m 3 , The number concentration is 1.5´10 7 / cm 3 ; PM at the outlet of the electrostatic precipitator 2.5 The mass concentra...
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