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Dust-laden steam flow flue gas wet type high-efficiency dehumidification and dust removal device

A technology of dust removal device and steam flow, which is used in the separation of dispersed particles, chemical instruments and methods, and the use of liquid separators, etc., and can solve inertial collisions, weak interception and cohesion, weak thermal lifting and pumping, and poor trapping effect, etc. It can improve the efficiency of dust removal and classification, reduce power consumption and save energy consumption.

Active Publication Date: 2016-06-01
JIANGSU BOJI SPRAYING SYST HLDG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inertial collision, interception and agglomeration between dust particles and liquid droplets in the dusty vapor stream are weak.
And because the flue gas temperature in the exhaust pipe is low, the moisture content is high, the humidity resistance increases, the heat lift and the suction force are weakened, the smoke exhaust ability is poor, and a large amount of smoke overflows before the slag treatment equipment, and the trapping effect is poor

Method used

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  • Dust-laden steam flow flue gas wet type high-efficiency dehumidification and dust removal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Steel slag treatment dust-laden steam flow flue gas wet-type high-efficiency dehumidification and dust removal device is a wet-type multi-layer gas-liquid countercurrent contact method. The washing tower 1 is divided into sections for spraying, spraying, dehydration, dehumidification and demisting. High-efficiency purification process, inside the washing tower 1 Fog condensation and trapping zone I, spray washing zone II, dehydration dehumidification and demisting zone III are dynamically formed from bottom to top, and the spray interception layer is composed of a group of single-layer or multi-layer rod grid layers 2.

[0032] The invention realizes the wet-type high-efficiency dehumidification and dedusting purification of the steel slag treatment dust-laden steam flow and flue gas in the following manner.

[0033] Under the negative pressure suction of the fan, the dust-laden steam flow flue gas drawn from the slag treatment device enters the washing tower 1 obliquely...

Embodiment 2

[0052] The slag treatment comprehensive transformation project of a large iron and steel company adopts the drum method slag treatment process, and the dust-laden steam stream from the slag treatment device has a high moisture content: 13%-15%, and the dust carried is ultra-fine steel slag. Powder, with hydraulic and sticky (knot) properties. From the perspective of dust particle size distribution: volume percentage / %: particle size > 10 μm accounted for 56%, particle size 2--10 μm accounted for 32%, and the rest <2 μm accounted for 12%. Steel slag is used to treat dust-laden steam flow and flue gas wet spray spray dedusting device.

[0053] Wet spray dust removal equipment is installed before the induced draft fan, and the purified gas is discharged to the atmosphere through the fan and exhaust pipe.

[0054] The relevant operating parameters of this embodiment are as follows

[0055] Treating flue gas volume 20×10 4 m 3 / h

[0056] Inlet flue gas temperature 80~100℃

...

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Abstract

The present invention relates to a wet efficient dehumidification dedusting apparatus for dust-containing steam flow flue gas. The wet efficient dehumidification dedusting apparatus comprises a washing tower and a downstream flue channel, wherein the upper end of the washing tower and the upper end of the downstream flue channel are connected to form a channel, the lower end of the washing tower is provided with a flue inlet pipeline, the lower end of the downstream flue channel is provided with a flue outlet pipeline, a mist condensation capturing area, a spraying washing area and a dewatering dehumidification demisting area are sequentially arranged inside the washing tower above the flue inlet channel from bottom to top, a jetting interception layer is arranged between the mist condensation capturing area and the spraying washing area, a plant grid is arranged between the spraying washing area and the dewatering dehumidification demisting area, a first-stage enhanced cyclone multiple baffle dewatering dehumidification demisting device is arranged in the dewatering dehumidification demisting area, a set of fine liquid mist spraying guns are arranged below the first-stage enhanced cyclone multiple baffle dewatering dehumidification demisting device, and a second-stage enhanced cyclone multiple baffle dewatering dehumidification demisting device is arranged in the downstream flue channel. The dust-containing steam flow flue gas wet efficient dehumidification dedusting apparatus of the present invention has characteristics of compact layout, small occupation area, high dehumidification dedusting efficiency of the dust-containing steam flow flue gas, and energy consumption saving.

Description

technical field [0001] The invention relates to a dust removal device, in particular to a dust-laden steam flow flue gas wet-type high-efficiency dehumidification and dedusting device for air pollution prevention and control, which belongs to the technical field of flue gas dedusting, desulfurization and purification devices, and can also be used in gas cooling and dehumidification systems . Background technique [0002] The iron and steel industry is the basic industry of modern economic construction and modern national defense. It is also a large resource and energy consumer. At the same time, a large number of by-products and pollutants are produced in the production process. The task of energy conservation and emission reduction is urgent and heavy. In terms of air pollution control, on February 27, 2013, the state decided that steel, cement and other industries would implement special emission limits for air pollutants at different times. Strengthen the control of inha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D47/06
CPCB01D47/06
Inventor 陈振华管序荣孔德明段同意王有龙胡可庆李友怀孙庭宇
Owner JIANGSU BOJI SPRAYING SYST HLDG CO LTD
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