A kind of smoke defogging device and its manufacturing method

Abstract

The invention discloses a flue gas demisting device which comprises a demisting assembly and a limiting assembly for fixing the demisting assembly, wherein the demisting assembly comprises multiple demisting elements; the limiting assembly comprises multiple first limiting elements and one or more second limiting elements; when the limiting assembly is used for fixing the demisting assembly, the demisting elements are connected to the second limiting elements by virtue of the first limiting elements; one of the first limiting elements is correspondingly connected with one demisting element; and the multiple first limiting elements are connected to one second limiting element. Meanwhile, the invention discloses a method for manufacturing the flue gas demisting device, and a demisting element clamping piece. According to the flue gas demisting device disclosed by the invention, the distance between two adjacent demisting elements can be arranged according to the optimal design, a standard module and an imitated arc-shaped module of the demister are easy to manufacture, the structural stability of the demister module is improved, and the technical problems that a demisting module on an imitated arc-shaped roof is complicated to produce and the distances among the demisting elements are limited to be in several kinds of limited distances are solved.

Description

technical field [0001] The invention relates to gas-liquid separation technology and belongs to the field of flue gas desulfurization and environmental protection, in particular to a demisting device and a manufacturing method thereof. Background technique [0002] In the exhaust gas after boiler combustion, especially in the flue gas of coal-fired thermal power plants, there are a large amount of SO2, NO and other exhaust gases, which are highly corrosive when exposed to water. In order to avoid environmental pollution, they need to be removed. Usually, in The harmful gas is removed by spraying in the flue gas desulfurization absorption tower. Liquid droplets and / or particles remain in the washed flue gas. The function of the mist eliminator (mist removal device) is to intercept the mist droplets and / or particles in the clean flue gas after desulfurization and washing in this highly corrosive environment. / or particulate matter, usually these droplets contain 8 to 15% gyp...

AI Technical Summary

Problems solved by technology

The main disadvantages of this method of connecting the defogging element and the sealing plate through the helical tooth comb 04 are: first, the thickness of the helical tooth comb is limited (usually 6-10mm), the end of the demisting element and the helical teeth The contact surface of the comb is very small, and the defogging element may have the risk of escaping after operation; secondly, some defogging elements and the comb must be manually welded, and the structural stability of the imitation arc-shaped module depends on the defogging of the module. The proportion and quantity of manual welding between components and combs; third, the design and processing of helical tooth combs are cumbersome, and the distance between two adjacent grooves of the helical tooth comb, the angle between the tooth groove and the strip plate (θ ) is not fixed, and the reason why it is not fixed is that these two design parameters are affected by variables such as the spacing S of the defogging element itself, the position of the special-shaped module in the circular tower, and the inclination angle of the defogging element.

In the actual project, the special-shaped modules are covered around the absorption tower, and the spacing between the first-stage demister elements and the second-stage demister elements are also different, so the slotting design and processing of the helical tooth comb of a complete set of demisters is It is a very complicated and cumbersome process, and the work efficiency of using this method to obtain imitation arc-shaped modules is very low

[0021] According to the helical tooth comb technical scheme recorded in CN203080468U, for the same level of mist eliminator, the distance between the teeth and the slope of the alveolar will change with the change of the position of the special-shaped module, such as Figure 10 As shown, if the width of the tooth is the same as the thickness of the defogging element but the angle is not consistent, the blade will interfere in the groove (see Figure 10 A), it is difficult to assemble, and it is easy to cause deformation of the defogging element; Figure 10 C), then the processing of the teeth will become very complicated; if the width of the teeth is greater than the thickness of the defogging element (see Figure 10 B), the tooth groove needs to be welded with the defogging element, otherwise the defogging element will vibrate in the teeth and damage the defogging element

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