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Integrated Venturi air washing device

An air scrubbing and Venturi technology, which is applied to combined devices, climate change adaptation, climate sustainability, etc., can solve the problems of insufficient velocity gradient, device operation impact, complex structure, etc., and achieves increased adjustability, can be arranged, The effect of flexible arrangement

Inactive Publication Date: 2012-09-12
CESTOIL ENVIRO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this design is that its structure is relatively complex, and the manufacturing process is difficult, especially the machining of the cone and the axis positioning of the cone and the cavity. A slight deviation will have a great impact on the operation of the device.
Since the gas stays in the Venturi slot for a very short time, usually less than 0.01 seconds, when the humidity in the air is low (such as relative humidity below 80%), the surface of the solid particles contained in the exhaust gas is relatively dry at this time, However, the liquid particles formed by the washing liquid in the Venturi notch are too small, so that the larger solid particles cannot be fully wetted in the Venturi notch, so they cannot be removed well
[0011] In addition, for large-scale waste gas treatment projects, especially the flue gas treatment of large power plants and boilers, the single-channel Venturi throat design will cause the same resistance loss due to the large throat cross-section and insufficient local velocity gradient. The local shear force is too small, which affects the overall air turbulence and removal effect
When the flue gas volume is too large, the height of a single Venturi slot will also become very large, so that the Venturi scrubber occupies a large space

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] like Figure 1-3 The shown Venturi washing device, in the described device, the washing tower and the separation tower are placed side by side. The flue gas to be treated first enters the pretreatment area 1 at the top of the washing tower from the flue gas discharge pipe of the factory or workshop. The residence time of the flue gas in the pretreatment area 1 is generally less than 0.5 seconds. On the tower wall 9, it is sprayed into the pretreatment zone 1 at an angle of 60° with the airflow direction. The pre-washing liquid is used as the washing liquid, which is transported by the water pump from the sump 16 located at the lower part of the separation tower 6 to the pre-treatment nozzle 8. After the flue gas is pre-washed, the temperature drops to 80 °C and the relative humidity is 100%.

[0055] After the flue gas leaves the pretreatment area 1, it enters the washing liquid spraying area 2, where it is sprayed by the spraying liquid. The washing liquid nozzles 11...

Embodiment 2

[0062] The Venturi scrubber and the cyclone separation tower can be placed parallel to each other as described in the above embodiments, or they can be placed at a certain angle to each other. When placed at an angle of 90°, the separation tower can be placed vertically and the washing tower can be placed horizontally, or the washing tower can be placed vertically and the separation tower can be placed horizontally. When the separation tower is placed horizontally, it still needs to have a slope greater than one-thousandth in the horizontal direction, so that the separated washing liquid can flow into the sump along the wall. At this time, the sump can be set next to the main separation tower , and communicate with the bottom of the main separation tower with a pipeline.

Embodiment 3-6

[0064] The design of the Venturi notch can choose different channel arrangements according to the actual situation. As shown in Figures 4-1, 4-2, 4-3 and 4-4, the cross section of the segmented columnar body 12 can take various shapes such as circle, ellipse, rhombus and water drop; The cross section is generally circular or elliptical.

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Abstract

The invention discloses an integrated Venturi air washing device. The device comprises two communicated barrels, wherein one barrel is a washing tower in which waste gas can be subjected to pre-washing treatment such as cooling and humidifying, and washing liquid can be injected and fully mixed with flue gas; the other barrel is a separation tower which mainly finishes gas-liquid separation; and the two barrels are connected into a whole through a communicating pipe. After being pretreated, the waste gas is washed and separated by using a Venturi effect and the cyclone separation principle. The Venturi air washing device is small in size, can be flexibly arranged, is easy to manufacture, is flexibly regulated, and can be suitable for large flue gas treatment, small workshop air purification and the like.

Description

technical field [0001] The application of the present invention relates to a Venturi air scrubber, which can be applied to the purification of various tail gases and exhaust gases produced by power plants and incinerator flue gases, catalytic cracking regeneration flue gases of petrochemical plants, industrial furnace flue gases, and reaction devices of chemical plants. It can also be used for air purification in various workshops and recovery of by-products in industrial tail gas, belonging to the technical field of waste gas treatment equipment. Background technique [0002] In exhaust gas treatment systems, air scrubbers are an effective device for removing particulate matter and gas components. Common industrial waste gases such as flue gas from power plants and incinerators, catalytic cracking regeneration flue gas from petrochemical plants, flue gas from various industrial kilns, various exhaust gases from reaction devices in chemical plants, and pollution from various...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00B01D47/10B01D51/10B01D53/18B01D53/78
CPCY02A50/2351
Inventor 熊靓朱核光
Owner CESTOIL ENVIRO CO LTD
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