Deacidification device for waste incineration flue gas cleaning

Abstract

The invention provides a deacidification device for waste incineration flue gas cleaning. The deacidification device comprises a flue gas charge appliance, a reactant charge appliance, a mixer and a dust remover, wherein the flue gas charge appliance is used for electrifying flue gas entering the flue gas charge appliance, so as to form charged flue gas; the reactant charge appliance is used for electrifying a reactant entering the reactant charge appliance, so as to form a charged reactant; the charge of the charged reactant is opposite to the charge of the charged flue gas; the mixer is connected with the flue gas charge appliance and the reactant charge appliance and is used for combining the charged flue gas and the charged reactant; the dust remover is connected with the mixer and isused for removing particles in the flue gas. According to the deacidification device for waste incineration flue gas cleaning provided by the invention, due to the arrangement of the flue gas charge appliance and the reactant charge appliance, the flue gas and the reactant are charged with opposite electric charges and then mixed in the mixer, so that the deacidification reaction rate is improved,and the operating cost is reduced.

Description

technical field [0001] The invention relates to the field of incineration power generation, in particular to a deacidification device for purifying waste incineration flue gas. Background technique [0002] In the field of waste incineration flue gas purification technology, the control of acid gas emissions is an important flue gas purification project. At present, waste incineration power plants often arrange dry deacidification equipment after semi-dry deacidification equipment, and use both at the same time to control acid gas emissions. The dry deacidification mostly adopts the pipeline injection method, that is, the slaked lime powder is directly sent into the flue between the semi-dry deacidification reaction tower and the bag filter through pneumatic conveying. In the bag filter, the slaked lime and acid gas react to produce It turns into fly ash and is collected by the bag filter to achieve the purpose of deacidification. In addition, a similar method is used to r...

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Problems solved by technology

[0003] However, due to the low deacidification efficiency and high operating cost of the dry deacidification equipment, it is often in a state of outage. The practice of many waste incineration power plants is to increase the input of materials on the semi-dry deacidification equipment, and shut down the dry deacidification equipment. Deacidification equipment, although this can also control the emission of acid gas up to the standard, it will also bring many problems to the semi-dry deacidification equipment, such as poor atomization effect of the atomizer, frequent replacement of the atomizer, and the outlet temperature of the reaction tower. too low

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