Method for selecting model of electrostatic dust collector for deeply cooling flue gas

Abstract

The invention discloses a method for selecting a model of an electrostatic dust collector for deeply cooling flue gas. The method comprises the following steps: calculating an ash sulfur ratio, takingan apparent migration velocity of a coal, calculating an effect-raising influence factor, calculating the effect-raising influence factor of the apparent migration velocity and calculating the effect-raising influence factor of the apparent migration velocity of a rotary electrode pair, according to a present coal model and design parameter requirements; calculating a dust-collecting area acquired by the electrostatic dust collector according to a calculation mode for the dust collecting efficiency of the electrostatic dust collector; selecting a suitable electrostatic dust collector model. The invention has the advantages that main influence factors and rule of the dust collecting efficiency of the electrostatic dust collector for deeply cooling flue gas are excavated; a specific calculation formula is provided for accurately calculating the dust collecting efficiency and specific model of the electrostatic dust collector for deeply cooling flue gas; the dust emission at an outlet exceeding standard caused by smaller model selection design and the waste problems of materials, sites, running power consumption and the like, caused by oversize model selection design can be avoided.

Description

technical field [0001] The invention relates to a type selection method of an electrostatic precipitator for deep cooling of flue gas. Background technique [0002] At present, with the full implementation of the "ultra-low emission" policy and standards for coal-fired power plants, the electric precipitator (also known as low-temperature electric precipitator) with deep cooling of flue gas has become the mainstream dust removal equipment for coal-fired power plants, but its dust removal Efficiency is affected by complex factors such as coal, ash composition, and flue gas conditions, and the factors are interrelated and interact. [0003] At the same time, there are Deutsch formula and Matts formula to calculate the dust removal efficiency of conventional electrostatic precipitators, both of which calculate the efficiency of electrostatic precipitator through the driving speed of coal types, but the specific calculation method of driving speed is not given. Some manufacture...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a type selection method of electrostatic precipitator for deep flue gas cooling, which can effectively solve the problem that the existing method cannot accurately select a suitable electrostatic precipitator, resulting in a design that is too small to meet the emission standards or a design that is too large to cause waste.

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