Lime slurry atomizing method and device for treating household waste incineration smoke

Abstract

The invention relates to a lime slurry atomizing method and device for treating household waste incineration smoke, used for removing acid gaseous pollutants of HCl, SOx and the like in the smoke in the household waste incineration industry and belonging to the field of smoke treatment. A double-fluid atomizing step is adopted, one path of fluid passes through a lime slurry solution and two pathsof fluid pass through a water path, water is pumped in a feeding pipe by the pressurization of a pressurizing pump along a tangential direction of an inlet, lime slurry concentrated liquid is dispersed and atomized under the action of pressure and speed after sprayed from an annular narrow hole to obtain fine particles, and a mixture is obtained while the atomization is carried out; and supply ofthe slurry and the water is regulated through an automatic flow control valve, and on-line regulation is realized according to the quantity of the acid gaseous pollutants and the change of the smoke temperature. For example, a nozzle is blocked, an electromagnet is controlled to be powered on or off through pressure detection, and a needle core is driven by a connecting rod to move up and down along the axial direction for getting through the blockage.

Description

technical field [0001] The invention relates to a lime slurry atomization method and device for treating domestic waste incineration flue gas, which is used in the domestic waste incineration industry to remove acid gaseous pollutants such as HCl and SOx in the flue gas, and belongs to the field of flue gas treatment. Background technique [0002] In the existing technology, combined with the characteristics of Chinese waste components in the waste incineration industry, the semi-dry process should be used for flue gas treatment, and the atomizer is the key component of the semi-dry flue gas desulfurization absorption device. There are three types of converters. [0003] ①Pressure nozzle [0004] The pressure type nozzle is mainly composed of a liquid tangential inlet, a liquid swirling chamber, a nozzle hole, etc. The high-pressure pump is used to make the liquid obtain a high pressure (2-20MPa), and enter the nozzle swirling chamber from the tangential inlet, and the liqu...

AI Technical Summary

Problems solved by technology

[0018] In order to overcome the deficiencies of the existing technical structure, the present invention provides a lime slurry atomization method and device for treating domestic waste incineration flue gas, which solves the shortcomings of steam heat source is not easy to obtain, compressed air consumes energy and is unstable, and uses water instead of compression The air is used to atomize the lime slurry, so as to achieve uniform atomization particles, not easy to block the nozzle, and save energy

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