High-temperature waste gas dust collection method

Abstract

The invention relates to the technical field of flue gas treatment and particularly discloses a high-temperature waste gas dust collection method which comprises the following steps: (1) introducing aflue gas from the bottom of a dust collection tower, and discharging the flue gas from the top of the dust collection tower after passing through a filtering layer in the dust collection tower; (2) while the flue gas is introduced into the dust collection tower, spraying water down from the top of the dust collection tower; (3) collecting water from the bottom of the dust collection tower, wherein the water sprayed down from the top of the dust collection tower is water collected from the bottom of the dust collection tower. Due to the adoption of the filtering layer, the flue gas can be adsorbed, the flue gas has a large contact area with the filtering layer when passing through the filtering layer, and in addition, when the flue gas is introduced from the bottom of the dust collection tower, the water is sprayed down from the top of the dust collection tower, and the water also has a dust collection function when being in contact with the flue gas, so that a dust collection effect can be improved.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to a method for removing dust from high-temperature waste gas. Background technique [0002] Brown mats, that is, "brown mattresses" or "brown floor mats" made of natural palm tree brown clothes. Before making brown mats, the brown clothes need to be pretreated. The existing pretreatment method is usually to use boiler high-temperature and high-pressure cooking to remove insects and sugar; and then use a spinning machine to further extract the brown clothes fibers. Since boilers mostly use anthracite combustion to provide heat source, a large amount of exhaust gas will be generated during the combustion process of anthracite, and exhaust gas directly discharged into the air will cause great pollution to the air. Therefore, the brown clothing processing plant needs to treat the exhaust gas before discharging it. The current treatment method is usually to pass the flue gas...

AI Technical Summary

Problems solved by technology

Since the boiler mostly uses anthracite combustion to provide heat source, a large amount of exhaust gas will be generated during the combustion of anthracite, and the exhaust gas directly discharged into the air will cause great pollution to the air

Therefore, the brown clothing processing plant needs to treat the exhaust gas before discharging it. The current treatment method is usually to pass the flue gas into water and then discharge it, so as to absorb the dust in the flue gas through water, but because the flue gas is directly When it is passed into the water, the flue gas will be discharged from the water with larger bubbles, so that only the dust on the surface of the bubbles is adsorbed in the water, so the dust removal effect is not good.

Images