CN214209751U - Demister - Google Patents

Abstract

The utility model discloses a demister, including fan housing, shell, baffling board defogging unit, water storage recess, rivers pipe and flowing back return bend, the fan housing is connected with the shell, and baffling board defogging unit, water storage recess, rivers pipe are installed in the shell, baffling board defogging unit and water storage groove connection, water storage recess and rivers pipe intercommunication, water storage recess and flowing back return bend intercommunication. The demister manufactured by adopting the technical scheme can effectively prevent water mist from drifting out of the demister at the exhaust port under the action of air flow after the demister is condensed into liquid drops.

Description

Demister

Technical Field

The utility model relates to an air current defogging field, in particular to be applied to horizontal defroster of improvement type modularization layering among aqueous vapor gas conveying system.

Background

On one hand, the back mixing and even flooding caused by entrainment of the entrainment can affect the industrial production efficiency and the operation safety, and on the other hand, the entrainment of the entrainment in the air flow can also greatly affect the subsequent reaction or separation process and equipment. For the operation unit with the front section of gas-liquid mass transfer and heat transfer or reaction, if the operation unit is directly discharged into an exhaust pipeline without being treated, a large amount of mist is carried in the gas, the temperature difference between the inside and the outside of the pipeline is large, a large amount of mist can be gathered on the pipe wall to form a large amount of condensate, and the pipeline is corroded day by day to cause production safety problems.

To avoid back mixing caused by entrainment of mist and corrosion of the exhaust pipe, mist eliminators are the most commonly used method in the industry. Demisting of the demister can prevent back mixing, avoid the reduction of the demisting on the heat transfer of the medium or the reaction driving force and ensure the production efficiency; material loss and heat loss are reduced, and production cost is reduced; the emission of gaseous pollutants is reduced, and the difficulty in tail gas treatment is reduced; the corrosion of the mist to pipes and equipment can be effectively reduced, the service life is prolonged, and the later maintenance cost is reduced.

The existing traditional demister is mainly a horizontal demister, and we find that the existing traditional demister has a serious defect in the production practice that condensate is easy to float out of the demister through an exhaust port under the action of air flow. Because of the fact that the traditional horizontal demister is mostly in multi-stage parallel connection, and no partition plate is arranged between each stage, condensate collected by the upper-stage condensing box flows into the lower-stage condensing box under the action of gravity, and the condensate has certain displacement in the direction of air flow under the action of air flow, so that the condensate passing through the upper-stage condensing boxes has larger displacement in the direction of air flow, and the condensate can easily flow out of the condenser through the air outlet

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a demister can prevent effectively that water smoke from drifting out the defroster in the gas vent under the effect of air current behind the defroster condensation one-tenth liquid drop.

The utility model provides a demister, including fan housing, shell, baffling board defogging unit, water storage recess, rivers pipe and flowing back return bend, the fan housing is connected with the shell, baffling board defogging unit, water storage recess, rivers pipe are installed in the shell, baffling board defogging unit and water storage groove connection, water storage recess and rivers pipe intercommunication, water storage recess and flowing back return bend intercommunication.

In the above scheme, the fan housing includes a front fan housing and a rear fan housing, the front fan housing is connected with the casing, and the rear fan housing is connected with the casing.

In the above scheme, the baffle plate defogging unit includes a first defogging unit, a second defogging unit and a third defogging unit, the first defogging unit is located above the inner shell, the second defogging unit is located below the first defogging unit, and the third defogging unit is located below the second defogging unit.

In the above scheme, the first demisting unit is connected with the water storage groove, the second demisting unit is connected with the water storage groove, and the third demisting unit is connected with the water storage groove.

In the above scheme, the flowing back return bend is U type flowing back return bend.

The utility model has the advantages and the beneficial effects that: the utility model provides a demister is applied to among the aqueous mist gas conveying system, can effectually carry out the evacuation with the liquid drop of gathering, avoids being brought into back fan housing by the air current, influences follow-up unit operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of an external vertical surface of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

In the figure: 1. front fan housing 2, rear fan housing 3, shell 4 and first demisting unit

5. Second defogging unit 6, water storage groove 7, water flow conduit 8 and liquid discharge elbow

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 and 2, the utility model relates to a demister, including fan housing, shell, baffling board defogging unit, water storage recess, rivers pipe and flowing back return bend, the fan housing is connected with the shell, and baffling board defogging unit, water storage recess, rivers pipe are installed in the shell, baffling board defogging unit and water storage groove connection, water storage recess and rivers pipe intercommunication, water storage recess and flowing back return bend intercommunication.

Specifically, the fan housing comprises a front fan housing and a rear fan housing, the front fan housing is connected with the shell, and the rear fan housing is connected with the shell.

The baffle plate demisting unit comprises a first demisting unit, a second demisting unit and a third demisting unit, wherein the first demisting unit is positioned above the inner part of the shell, the second demisting unit is positioned below the first demisting unit, and the third demisting unit is positioned below the second demisting unit; wherein, first defogging unit and water storage groove connection, second defogging unit and water storage groove connection, third defogging unit and water storage groove connection.

Specifically, the liquid discharge elbow is a U-shaped liquid discharge elbow.

The working principle of the technical scheme is as follows:

after the airflow containing water mist enters the demister through the front fan cover, the airflow uniformly enters the first demisting unit, the second demisting unit and the third demisting unit, the water mist is gathered into drops and drops downwards under the action of the baffle plate demisting unit, and finally the drops are collected in the water storage groove below, water in the water storage groove at the bottom of each demisting unit enters the water storage groove at the lower end of the third demisting unit through the water flow guide pipe, and finally the water is emptied through the liquid discharge U-shaped bend.

The utility model has the advantages that:

the utility model discloses a demister is applied to among the aqueous vapor gas conveying system, can prevent effectively that the water smoke from drifting out the defroster in the gas vent under the effect of air current behind the defroster condensation one-tenth liquid drop. This horizontal defroster of improvement type modularization layering mainly includes following three parts:

1. demisting: demisting and filtering the water-containing mist by a single demisting unit or a combination of a plurality of demisting units;

2. backflow support and discharge pipe section: the demisting section is used for placing the demisting section and collecting and guiding the condensate collected by the demisting boxes at all levels, so that the condensate in the demisting boxes at all levels enters the water storage groove at the bottom of the demisting rack at all levels through the discharge pipe under the combined action of gravity and airflow;

3. front and rear fan housing parts: the flow guiding and flow equalizing function is carried out on the inlet and outlet air.

The demister has the characteristics of layered and efficient collection of condensate, simple structure, convenience in maintenance, capability of effectively preventing the condensate from drifting out of the demister at the exhaust port under the action of air flow and the like.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A demister is characterized by comprising a fan cover, a shell, a baffle plate demisting unit, a water storage groove, a water flow conduit and a liquid discharge elbow, wherein the fan cover is connected with the shell, the baffle plate demisting unit, the water storage groove and the water flow conduit are arranged in the shell, the baffle plate demisting unit is connected with the water storage groove, the water storage groove is communicated with the water flow conduit, and the water storage groove is communicated with the liquid discharge elbow.

2. The mist eliminator as set forth in claim 1, wherein the hood comprises a forward hood connected to the housing and a rear hood connected to the housing.

3. The demister as set forth in claim 1 wherein the baffle plate demisting unit comprises a first demisting unit located above the interior of the housing, a second demisting unit located below the first demisting unit, and a third demisting unit located below the second demisting unit.

4. The demister as set forth in claim 3 wherein the first demisting unit is connected to the water storage groove, the second demisting unit is connected to the water storage groove, and the third demisting unit is connected to the water storage groove.

5. A demister as set forth in claim 1 wherein the liquid discharge elbow is a U-shaped liquid discharge elbow.

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