Self-circulation flue gas dedusting and cooling tower and method

Abstract

The invention discloses a self-circulation flue gas dedusting and cooling tower and a method. A porous impeller structure is applied into a dedusting device cavity, potential energy of water in the cooling tower is fully utilized to act to flow from top to bottom to drive a dedusting impeller to rotate clockwise, extra acting is avoided, and a self-circulation function is achieved; meanwhile, a flushing effect of the water in the cooling tower is fully utilized, a dedusting effect is well achieved, filtering of a filter screen can guarantee that circulation water can be recycled; a certain promoting effect on flue gas flowing into in an impeller rotating process is achieved; adsorption and flushing on pollutant particles in the flue gas can be separately performed by the porous impeller structure, so that dedusting efficiency is obviously improved; reversed flowing of the flue gas and water is utilized to drive the dedusting impeller to rotate clockwise, the flue gas is prevented from directly contacting the water, waste heat loss of the flue gas in a dedusting process is avoided; meanwhile, the flue gas is not prevented from flowing in the dedusting process, and power consumption in the dedusting process is reduced to a larger extend.

Description

technical field [0001] The invention belongs to the technical field of power plant energy saving, and in particular relates to a self-circulating flue gas dedusting cooling tower and a method thereof. Background technique [0002] With the rapid development of my country's industry, the demand for electricity is also increasing. At present, most of my country's power generation still relies on boilers that use raw coal as fuel, and the pollutants emitted by the combustion of raw coal in boilers have brought great harm to the atmospheric environment. , so that my country's environmental governance is facing great challenges, so the recovery and treatment of particulate matter in flue gas is becoming more and more important. The composition of the flue gas is very complex, and the dust often contains fuel ash, coal particles, oil droplets, and pyrolysis products. [0003] The dust removal device can separate the dust from the flue gas, so it has been more and more used in the ...

AI Technical Summary

Problems solved by technology

Among them, mechanical dust removal uses mechanical force to remove dust from the air flow, which is low in cost but low in dust removal efficiency; electric dust removal uses electrostatic force to separate dust from air flow, and has high dust removal efficiency but high cost; filter dust removes dust from gas through filter materials. , not suitable for high-temperature flue gas; the dust and gas are separated by the collision of dust and liquid droplets or liquid film through washing and dust removal, and the operating cost is high

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