Baffle type cyclone demister

A technology of demisters and baffles, which is applied in chemical instruments and methods, separation of dispersed particles, separation methods, etc., can solve the problems of difficult small-diameter droplets, effective removal, etc., and achieve the overall simplification of the device and the small space occupied , the effect of low height

Inactive Publication Date: 2010-08-04
SOUTHEAST UNIV
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Problems solved by technology

[0005] Technical problem: The present invention aims at the shortcomings of the baffle plate demister that only uses the deflection effect of inertial force, which is difficult to effectively remove small-diameter droplets, and provides a kind of baffle plate inertial separation——cyclone centrifugal separation composite demisting The device and method of the device, in order to effectively separate the tiny droplets in the airflow, realize the protection of the air duct and equipment, and avoid the pollution of the atmospheric environment

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  • Baffle type cyclone demister
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  • Baffle type cyclone demister

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example

[0032] The present invention is applied in the wet flue gas desulfurization process to remove mist droplets in the flue gas after desulfurization: the designed demist device and wet flue gas desulfurization equipment are set as an integral desulfurization system, which is arranged above the desulfurization tower. The diameter of the tower is 12m, the total height of the defogging section is 4.0m, and the average rising velocity of the flue gas in the tower is 5m / s.

[0033] The flue gas containing mist drops first passes through the first stage demister from bottom to top. The first-stage flap-type defogging blades are arranged side by side with each other, the blade spacing is 40mm, the blade height is 350mm, and the blade angle is 75°, and they are arranged to form a ring shape. become a group of leaves. There are 7 sets of ring-shaped blades in the first-stage demister, each with a width of 750mm. The cylindrical area with a diameter of 1500mm in the middle is set as a bl...

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Abstract

The invention provides a baffle type demisting device combining inertial separation and cyclone centrifugal separation and a method thereof. The method is as follows: the demisting device is designed as a two-level demister, and when airflow passes through a channel arranged between demisting blades of a first-level baffle on the base layer, mist drops impact the blades under the inertia effect due to flow line deflection, thereby realizing capture of large-diameter droplets. In addition, the outlet section of the baffle is arranged obliquely and faces one rotating direction, thereby achieving the functions of both demisting and diversion, so that the airflow can rise in a rotating way when passing through the first-level blades. The channel of a second-level demister is of deflection type in the vertical direction and is of a concentric ring shape in the horizontal direction, so that when rotating airflow passes through the demisting channel on the layer, smaller mist drops can be further removed under the combined effect of the baffle inertia separation and the rotating centrifugal separation, thereby making the whole demister achieve the effect of completely demisting.

Description

technical field [0001] The invention relates to a device and method for a baffle inertial separation-cyclone centrifugal separation composite demister, and belongs to the technical field of air pollution prevention and control. Background technique [0002] In the industrial production process, the demister device is usually used to remove the liquid droplets entrained in the gas, so as to reduce the pollution and corrosion of the liquid droplets on the airflow channel and subsequent equipment, or to prevent the direct discharge of the mist-containing gas from polluting the atmospheric environment. Its basic working principle is that when the airflow with liquid droplets enters the channel of the demister, under the action of various forces, the movement direction of the droplets deviates from the direction of the airflow, and makes it hit the demister blade or other On the surface of the collector, it can be removed, so as to realize the separation of gas and liquid. [00...

Claims

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Application Information

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IPC IPC(8): B01D45/16B01D45/08B01D45/06
Inventor 仲兆平姚杰周山明
Owner SOUTHEAST UNIV
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