Water-spray-type tubular dust collector

Abstract

The invention belongs to the technical field of waste gas purification, and particularly relates to a water-spray-type tubular dust collector. According to the water-spray-type tubular dust collector provided by the invention, the technical principles of an impingement dust collector and a water-film-type dust collector are combined together, the dust of the saturated wet flue gas can be removed, and the problems of dedusting and demisting the flue gas treated by a wet desulfurization device can be solved. The water-spray-type tubular dust collector is generally applied to the electric power environmental protection industry, and has the working position at the downstream part of the flue gas wet desulfurization device (FGD) of a thermal power plant; a water film is formed on the surface of a dust collection tube bundle in a water pouring way or a water spray way, so that impurities such as fine particle dust, gypsum, liquid water and the like in the flue gas can be caught; therefore, the clean emission of the flue gas of the thermal power plant can be realized, and the dust removing efficiency and the long-term work stability of equipment are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of exhaust gas purification, and in particular relates to a water-spraying tubular dust collector, which can be used for dust removal and demisting of flue gas after a wet desulfurization device. Background technique [0002] China's coal-based energy structure has resulted in domestic power sources being dominated by coal-fired thermal power generation. At the end of 2010, my country's installed power generation capacity reached about 950 million kilowatts, of which thermal power installed capacity was 700 million kilowatts, accounting for about 73.68% of the total capacity. [0003] In order to solve the pollution problem of boiler flue gas emission in coal-fired power plants, a large number of technical measures have been taken in recent years to reduce smoke, SO 2 , nitrogen oxides and other pollutants, successively carried out the addition and transformation of electrostatic precipitator, flue gas desu...

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Problems solved by technology

[0009] The above two methods have different problems. The former requires a thorough transformation of the desulfurization device and the addition of a GGH heat exchanger. Not only is the equipment expensive, but also the volume is large, and it is difficult to arrange on many sites. The resistance of the equipment is above 1000Pa, which brings The power consumption of the auxiliary machine is quite considerable; for the latter, due to the consideration of anti-corrosion issues, the equipment cost is very high. This type of equipment is rarely used in the power industry, and there is not much actual use experience

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