Windmill-tubular condensing-type demister and demisting method thereof

A condensing, mist eliminator technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of large pressure drop and low mist removal efficiency of the mist eliminator, achieve small pressure drop and improve the removal of mist. The effect of fog efficiency

Active Publication Date: 2015-11-11
SOUTH CHINA UNIV OF TECH
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AI Technical Summary

Problems solved by technology

Solve the technical problems of traditional demisters such as large pressure drop and low demisting efficiency

Method used

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  • Windmill-tubular condensing-type demister and demisting method thereof

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Embodiment

[0027] Such as figure 1 shown. A windmill-tubular condensing demister according to the present invention includes a housing 5, in which a windmill display defogging layer 1, a heat exchange tube array defogging layer 2, and a wire mesh are sequentially arranged at intervals from bottom to top. Demister layer 4;

[0028] Windmill display defogging layer 1 (the first stage) consists of multiple windmills connected in series and arranged side by side. The blades of each windmill have the same inclination direction and rotation direction, and the airflow spirals up from bottom to top and passes through the windmill display in order Layer 1, heat exchange tube array defogging layer 2, wire mesh defogging layer 4. There is a certain distance between the windmills. When the gas flows through the blade channel of the wind workshop, due to the deflection of the streamline, the large-diameter droplets will deviate from the direction of the airflow and hit the surface of the blade due...

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Abstract

The invention discloses a windmill-tubular condensing-type demister and a demisting method thereof. In a shell body, a windmill array demisting layer, a heat exchange tube array demisting layer and a wire mesh demisting layer which are successively arranged from bottom to top at intervals. The windmill array demisting layer is formed by connecting a plurality of windmills to form a row, wherein the inclining direction is same as the rotation direction of blades in each windmills. The wire mesh demisting layer is formed by wires in an interweaving manner. When air flows into the windmill array, the flow line of air is deflected so that large-diameter drops impact the blades in each windmills under the effects of inertia and are trapped in a large quantity, when the air flows on the surface of the heat exchange tubes in which cooling water flows, the temperature of air is reduced and the carried mist is condensed into hyper-saturated drops, and further the carrying capacity of air is reduced. By means of wire mesh demisting, the carrying amount of mist in flue gas is further reduced. In addition, by means of the free rotation of the windmill, the demister is free of washing dead corner, thereby solving the problem that a conventional demister is liable to be blocked. The demister is less in investment, is low in operation and maintenance cost, and is reduced in generation of gypsum rain in chimney in wet desulphurization.

Description

technical field [0001] The invention relates to a demisting device, in particular to a windmill-tube condensation demister and a demisting method thereof. Background technique [0002] Mist eliminators are widely used in processes such as flash demisting, oil and gas separation, and acid mist purification in chemical and environmental fields. Common gas-liquid two-phase separation technologies are divided into the following types: gravity sedimentation separation, cyclone centrifugal separation, inertial separation (such as baffle separation, screen separation, etc.), ultrafiltration separation and electrolytic separation. Among them, gravity sedimentation is mainly used to remove large droplets with a diameter greater than 50 μm, cyclone centrifugation can effectively remove droplets with a diameter greater than 10 μm, and a wire mesh separation demister can remove droplets with a diameter greater than 5 μm. The above separation is in the project It is more common; while u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00
Inventor 刘定平崔静周俊夏松刘畅
Owner SOUTH CHINA UNIV OF TECH
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