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A cascade falling film column and device for cross-flow dedusting

A falling film and fluid technology, applied in the field of dust removal, can solve the problems of insufficient removal efficiency and insufficient understanding of small particle removal

Active Publication Date: 2022-05-06
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The primary purpose of the present invention is to address the above-mentioned defects and deficiencies, to solve the insufficient removal efficiency of the cross-flow dedusting device in the prior art, especially the technical problem of insufficient understanding of the removal of small particles in the prior art, and to provide a method for Falling Film Column for Cross Fluid Dedusting

Method used

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  • A cascade falling film column and device for cross-flow dedusting
  • A cascade falling film column and device for cross-flow dedusting
  • A cascade falling film column and device for cross-flow dedusting

Examples

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Embodiment 1

[0068] This embodiment 1 provides a falling film column that improves the removal efficiency of small particles, including a column that is vertically distributed for carrying a water film, and the column is at least provided with a liquid film at the position where the tank is provided, including both Arranging the liquid film in the tank also includes the situation where the liquid film is arranged both inside and outside the tank, but in order to save water and energy, it is the preferred solution to arrange the liquid film in the tank as much as possible.

[0069] A first tank is provided on the windward side of the column, a second tank is provided on the sidewind side of the column, and the first tank is used to receive large particles with relatively large inertia.

[0070] Here it is necessary to explain the application of cross-flow particle removal. First, the dust-laden gas passes over the falling film column in a direction perpendicular to the falling film column; ...

Embodiment 2

[0081] refer to Figure 9 , this paper provides a falling film column applied to cross-flow dedusting, including the falling film column body, and the first flow limiting groove and the second flow limiting groove on the falling film column body. The diameter of the falling film column body is 8mm, the groove angle of the first flow limiting groove is constant at 120°, and the groove depth is 2.5mm; the groove angle of the second groove body is α n 120°~20°, groove depth d n 2.5 ~ 0.5mm. As the dust-laden gas flows to the second groove body, the groove angle and groove depth are evenly reduced. The modified dust removal unit contains 6 unit rows. Two staggered rows of falling film columns with equal spacing constitute a unit row, and the cascading method is the first unit row C 1 The horizontal and vertical spacing W of the inner liquid column 1 is 7mm, the slotting angle α of the second slot body of the falling film column in the unit row 1 and groove depth d 1 They ar...

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Abstract

The invention discloses a cascade falling film column and a device for cross-flow dedusting. The above-mentioned falling film column includes a column body, on which there is a tank for arranging the liquid film; the tank body includes a first tank body and a second tank body, the first tank body is arranged in the windward area, and the second tank body is arranged on the side windy area. The above-mentioned device is composed of the above-mentioned falling film columns arranged in cascade. Compared with the traditional technology, the present invention recognizes that not only the inertial collision mechanism but also the Brownian motion mechanism exist in the falling film column dust removal process. The mechanism of Brownian motion shows that small particles hit the capture surface due to their own irregular Brownian motion on the crosswind side of the flow and are captured. The present invention effectively utilizes the dust removal effect brought by the Brownian motion and inertial collision dust removal mechanism through the film cloth on the side wind surface, and improves the particle removal rate; through the cascade arrangement of the falling film columns, the energy consumption is effectively reduced. And the size of the slotting angle is changed according to the gas velocity to avoid excessive liquid film arrangement.

Description

technical field [0001] The invention relates to the technical field of dust removal, and more specifically, to a cascade falling film column and device for cross-flow dust removal. Background technique [0002] The environmental problems caused by the dispersion of aerosols in the air have brought irreparable impacts on people, and the research on aerosol removal has attracted more and more attention and exploration. Investigating its origin, the exhaust particulate matter emitted in industrial production is one of the important sources, and how to achieve high dust removal efficiency at a lower cost of energy consumption is a major problem for technicians in the field of dust removal. [0003] Common aerosol removal methods include mechanical, filter, wet and electrostatic precipitators. However, although these traditional dust removal methods have high dust removal efficiency, the huge energy consumption is unacceptable. [0004] Gas-Liquid Cross-Flow Array (GLCA) is a n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/40B01D47/02B01D45/10
CPCB01D47/022B01D47/024B01D45/10
Inventor 余徽胡显峰刘泽坤魏文韫周勇
Owner SICHUAN UNIV