CN217662152U

CN217662152U - Chimney rain separator

Info

Publication number: CN217662152U
Application number: CN202221640836.4U
Authority: CN
Inventors: 杨青龙; 周洪伍; 王光宇
Original assignee: Beijing Xiangyuanxi Environmental Protection Technology Co ltd; Tianjin Xiangyuanxi Environmental Protection Equipment Co ltd
Current assignee: Beijing Xiangyuanxi Environmental Protection Technology Co ltd; Tianjin Xiangyuanxi Environmental Protection Equipment Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-10-28
Anticipated expiration: 2032-06-27

Abstract

The utility model relates to a chimney rain separator, including installing defogging module and the drainage module in the chimney, the defogging module is arranged in intercepting the water droplet in the flue gas, and it includes: the plurality of demisting blades extend along the axial direction of the chimney and incline towards the axis direction of the chimney, the plurality of demisting blades are distributed in a circular array by taking the axis of the chimney as the center, and a gap between every two adjacent demisting blades forms a channel for the ascending flue gas to pass through; the drain module includes: the water collecting pipe is arranged at the bottom of the demisting blade, and the drain pipe is connected with the water collecting pipe; the upper end of the water collecting pipe is an open opening and is used for receiving water drops flowing down from the demisting blades, one end of the water discharging pipe is connected with the water collecting pipe, and the other end of the water discharging pipe extends to the outside or the bottom of the chimney. The utility model discloses it is weak to blockking of flue gas, can be at the high-speed in-process water droplet that rises of flue gas in the interception flue gas to effectively reduce the production of chimney rain, reach energy-concerving and environment-protective purpose.

Description

Chimney rain separator

Technical Field

The utility model relates to an industrial gas purifier, especially a chimney rain separator.

Background

In wet desulphurization, a demister is arranged above the desulphurization tower or in the flue and is used for separating liquid drops in flue gas. However, after the demister, the saturated wet flue gas is separated out of condensed water to form liquid drops in the clean flue and the chimney along with the reduction of the temperature, and the liquid drops passing through the demister are carried in the flue gas together. If not treated, these droplets are discharged through a chimney into the atmosphere, around which they fall to form a chimney rain.

Chimney rain contains pollutants such as gypsum, limestone, dust, mercury, sulfuric acid and the like, causes great pollution to the environment, and corrodes peripheral equipment, houses and vehicles of the chimney.

The existing chimney rain has no effective treatment scheme. The currently used technologies mainly include the following three types:

the first technology for treating chimney rain is to increase a cyclone plate in the chimney to make the smoke rotate and to make the liquid drops in the smoke throw off to the chimney wall to be removed under the action of centrifugal force. But for small droplets that require a large centrifugal force, the effect is not ideal. And because the flow velocity in the chimney is very high, usually >20m/s, in the high-speed air current, the pressure loss of the rotational flow plate is very large, several hundred pascals or even kilopascals, and the application significance is basically not realized.

The second technology for treating chimney rain is to add spiral baffles on the inner wall of the chimney. The spiral baffle has low efficiency for collecting liquid drops in the chimney, and can not eliminate the rain in the chimney.

The third technology is that an annular water baffle is added at the outlet of the chimney, and similarly, liquid drops in the center of the chimney cannot be removed, so that the aim of effectively removing chimney rain cannot be fulfilled.

Other technologies, such as collecting grooves arranged on the inner wall sections of the chimney for collecting condensed water, cannot practically and completely avoid the generation of chimney rain.

The present invention is provided in view of this point.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a chimney rain separator, can separate the water droplet in the flue gas under the very little condition of flue gas pressure loss to avoid the production of chimney rain phenomenon.

In order to realize the purpose, the utility model adopts the following technical scheme:

a chimney rain separator, includes install defogging module and the drainage module in the chimney, the defogging module is arranged in intercepting the water droplet in the flue gas, and it includes:

a plurality of demisting blades which extend along the axial direction of the chimney and incline towards the axial direction of the chimney,

the plurality of demisting blades are distributed in a circular array by taking the axis of the chimney as the center, and a passage for the ascending flue gas to pass through is formed by a gap between every two adjacent demisting blades;

the drainage module includes:

the water collecting pipe is arranged at the bottom of the demisting blade, and the drain pipe is connected with the water collecting pipe;

the upper end of the water collecting pipe is an open opening and is used for receiving water drops flowing down from the demisting blades, one end of the water discharging pipe is connected with the water collecting pipe, and the other end of the water discharging pipe extends to the outside or the bottom of the chimney.

Furthermore, the collector pipe is annular, and the bottom of defogging blade is fixed in the collector pipe through the mode of grafting or joint.

Further, the defogging blades are arranged in at least two layers, are arranged up and down and keep the same inclination angle;

the collector pipe includes upper water collector pipe and lower floor's collector pipe, upper water collector pipe is located the bottom of upper defogging blade, and lower floor's collector pipe is located the bottom of lower floor's defogging blade, and communicates through the connecting pipe between upper water collector pipe and the lower floor's collector pipe.

Further, the periphery wall and the chimney inner wall fixed connection of lower floor's collector pipe, the periphery wall of upper strata collector pipe passes through linking bridge and chimney inner wall connection.

Furthermore, the extending line of the demisting blade in the length direction forms an included angle alpha with the axis of the chimney, and the value range of the alpha is 5-60 degrees.

Furthermore, the section shape of the defogging blade is in a wavy shape or a shape formed by bending for many times.

The outer side of the defogging blade is provided with a plurality of lines, and the outer side of the defogging blade is provided with a plurality of lines.

Further, the fairing is of a thin-shell structure.

Adopt technical scheme after, bring following beneficial effect:

1. the utility model discloses a defogging blade adopts circular array to distribute, the shape of adaptation chimney that can be fine for all flue gases in the chimney all pass through defogging blade's separation, thereby intercept the water droplet in the flue gas, effectively reduce the production that the chimney was rainy.

2. The utility model discloses a water droplet in the interception flue gas to can carry out reuse to the water that separates, reach the purpose of water conservation.

3. The utility model discloses a defogging blade slope sets up, and is more weak to the effect that blocks of flue gas for pressure loss is very little when the flue gas is through the defogging blade, usually below 100Pa, has guaranteed the normal emission of flue gas.

4. The utility model discloses an increase the radome fairing on defogging blade top, can optimize the flow field, further reduce the pressure loss.

Drawings

FIG. 1: the utility model discloses an overall structure sketch map of embodiment one;

FIG. 2: in the flue gas flow diagram of the first embodiment of the present invention, the thin arrows in the diagram represent the flue gas movement direction, and the thick arrows represent the water drop movement direction;

FIG. 3: isbase:Sub>A cross-sectional view A-A of the defogging blade of FIG. 1;

FIG. 4: is a partial enlarged view of K of FIG. 3;

FIG. 5: the second embodiment of the utility model provides a sectional view of defogging blade;

FIG. 6: is a partial enlarged view of Y of fig. 5;

FIG. 7: the third embodiment of the present invention is a schematic view of the whole structure;

wherein: 1. chimney 2, defogging blade 3, collector pipe 4, drain pipe 5, connecting pipe 6, linking bridge 7, radome fairing 21, first guide portion 22, first segmental arc 23, second segmental arc 24, third segmental arc 25, second guide portion 26, fin structure 27, ditch column structure 31, upper water collector pipe 32, lower floor's collector pipe.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Example one

As shown in fig. 1 and 2, a chimney rain separator is mainly used for separating liquid drops larger than 40 microns carried in smoke, and specifically comprises a demisting module and a drainage module which are installed in a chimney 1.

The defogging module comprises: the device comprises a chimney 1, a plurality of demisting blades 2 which extend along the axial direction of the chimney 1 and incline towards the axis direction of the chimney, wherein the demisting blades 2 are distributed in a circular array by taking the axis of the chimney as the center, and a channel for the ascending flue gas to pass through is formed by a gap between every two adjacent demisting blades 2.

Referring to fig. 3, in this embodiment, the defogging blade 2 is a corrugated defogging blade, and the section of the corrugated defogging blade is in a wave shape or a multi-bending shape. The shape of the defogging blades 2 is not limited to this, and other shapes of the defogging blades 2 can be adopted, such as a special-shaped tubular structure, a V-shaped structure or a W-shaped structure.

As shown in fig. 4, in particular, the defogging blade 2 includes:

the first guide portion 21 is formed to have a first shape,

a first arc-shaped section 22 smoothly connected with the first guide portion 21,

a second arc section 23 which is staggered with the first arc section 22 and is separated with a certain distance, the second arc section 23 is connected with the first arc section 22 through a connecting rib,

a third arc-shaped section 24 which is staggered with the second arc-shaped section 23 and is separated by a certain distance, the third arc-shaped section 24 is also connected with the second arc-shaped section 23 through a connecting rib,

and a second guide portion 25 connected to the third arc-shaped section 24,

at least a portion of the first guide portion 21 and the second guide portion 25 has a straight structure.

The first arc-shaped section 22, the second arc-shaped section 23 and the connecting ribs therebetween jointly form a ditch-shaped structure 27 for water droplets to flow downwards, so that the design has the advantage that the leeward side of the defogging blade 2 can form a channel for water droplets to flow downwards, and the problem that high-speed airflow cannot form a channel for water droplets to flow downwards is avoided.

The drain module includes: a water collecting pipe 3 arranged at the bottom of the demisting blade 2 and a drain pipe 4 connected with the water collecting pipe 3. The upper end of the water collecting pipe 3 is open and used for receiving water drops flowing down from the demisting blades 2, one end of the water discharging pipe 4 is connected with the water collecting pipe 3, and the other end of the water discharging pipe extends to the outside of the chimney 1 or the bottom of the chimney 1. Collector pipe 3 is the ring shape to the level is placed, the mode of grafting or joint is fixed in collector pipe 3 through the bottom of defogging blade 2, and in other embodiments, defogging blade 2 also can be fixed in the chimney through setting up the support alone, and the water droplet of defogging blade 2 interception flows downwards under the action of gravity to in collecting pipe 3 is colleted.

Preferably, the defogging blades 2 are arranged in at least two layers, and are maintained to be arranged up and down and at the same inclination angle. The specific inclination mode is as follows: the extending line of the demisting blade 2 in the length direction forms an included angle alpha with the axis of the chimney, and the value range of the alpha is 5-60 degrees.

In this embodiment, defogging blade 2 sets up to two-layerly, and is corresponding collector pipe 3 includes upper water collector pipe 31 and lower floor's collector pipe 32 to water droplet on corresponding being used for bearing upper defogging blade 2 and the lower floor defogging blade 2. Specifically, the upper layer water collecting pipe 31 is located at the bottom of the upper layer defogging blade 2, the lower layer water collecting pipe 32 is located at the bottom of the lower layer defogging blade 2, and the upper layer water collecting pipe 31 is communicated with the lower layer water collecting pipe 32 through the connecting pipe 5. The bending radius of the upper layer water collecting pipe 3 is smaller than that of the lower layer water collecting pipe 3.

The outer peripheral wall of the lower layer water collecting pipe 3 is fixedly connected with the inner wall of the chimney, for example, the lower layer water collecting pipe 3 can be connected with the inner wall of the chimney through a screw, or an angle iron is arranged firstly to be connected with the inner wall of the chimney, and then the lower layer water collecting pipe 3 is welded with the angle iron or directly located on the angle iron.

The peripheral wall of the upper layer water collecting pipe 3 is connected with the inner wall of the chimney 1 through a connecting support 6.

Preferably, the chimney rain separator further comprises a fairing 7 installed at the top end of the defogging blade 2, wherein the fairing 7 is conical, and the extension line of the bus of the fairing coincides with the outline line of the outermost side of the defogging blade 2. The fairing 7 is of a thin-shell structure, and an airflow field in the chimney can be optimized by arranging the fairing 7, so that the pressure loss is reduced.

Example two

The present embodiment differs from the first embodiment in that the shape of the defogging blades 2 is different.

Specifically, in this embodiment, as shown in fig. 5 and fig. 6, the first arc-shaped segment 22, the second arc-shaped segment 23, and the third arc-shaped segment 24 are connected end to end and are smoothly connected.

Preferably, an outwardly extending fin structure 26 is also provided on the first, second and third

arcuate segments

22, 23, 24.

EXAMPLE III

Referring to fig. 7, the present embodiment is different from the above embodiments in that the length of the defogging blades 2 is longer, only one layer of the water collecting pipe 3 is arranged, and the structures such as the connecting pipe and the connecting bracket are omitted, so that the overall structure is simpler. The above description is for the embodiments of the present invention, and it should be noted that, for those skilled in the art, without departing from the principle of the present invention, various modifications and improvements can be made, and this should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a chimney rain separator, is including installing defogging module and the drainage module in the chimney, its characterized in that, defogging module is arranged in intercepting the water droplet in the flue gas, and it includes:

the drainage module includes:

the upper end of the water collecting pipe is an open opening and is used for receiving water drops flowing down from the demisting blades, one end of the drain pipe is connected with the water collecting pipe, and the other end of the drain pipe extends to the outside or the bottom of the chimney.

2. The chimney rain separator according to claim 1, wherein the water collecting pipe is circular, and the bottom ends of the defogging blades are fixed in the water collecting pipe in an inserting or clamping manner.

3. A stack rain separator according to claim 1 or 2, wherein the demister blades are arranged in at least two layers and are arranged above and below and at the same angle of inclination;

the collector pipe includes upper header pipe and lower floor's collector pipe, the upper header pipe is located the bottom of upper defogging blade, and lower floor's collector pipe is located the bottom of lower floor's defogging blade, and passes through the connecting pipe intercommunication between upper header pipe and the lower floor's collector pipe.

4. The chimney rain separator according to claim 3, wherein the outer peripheral wall of the lower layer water collecting pipe is fixedly connected with the inner wall of the chimney, and the outer peripheral wall of the upper layer water collecting pipe is connected with the inner wall of the chimney through a connecting bracket.

5. The chimney rain separator according to claim 1, wherein an angle between an extension line of the defogging blades in a length direction and an axis of the chimney is α, and a value of α ranges from 5 ° to 60 °.

6. The chimney rain separator according to claim 1, wherein the cross-sectional shape of said demister blade is a wave or a multi-turn profile.

7. A stack rain separator according to claim 1, further comprising a fairing mounted at the top of the demister blade, said fairing being conical and having a generatrix which extends in line with the outermost contour of the demister blade.

8. The stack rain separator of claim 7, wherein said cowl is of a thin shell construction.