CN218306743U - Tube bundle for demister and tube bundle type demister - Google Patents
Tube bundle for demister and tube bundle type demister Download PDFInfo
- Publication number
- CN218306743U CN218306743U CN202221486645.7U CN202221486645U CN218306743U CN 218306743 U CN218306743 U CN 218306743U CN 202221486645 U CN202221486645 U CN 202221486645U CN 218306743 U CN218306743 U CN 218306743U
- Authority
- CN
- China
- Prior art keywords
- tube bundle
- demister
- cylinder
- flushing
- vane wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000011010 flushing procedure Methods 0.000 claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003546 flue gas Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000779 smoke Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 21
- 239000000428 dust Substances 0.000 abstract description 18
- 239000007788 liquid Substances 0.000 abstract description 13
- 229910052602 gypsum Inorganic materials 0.000 abstract description 7
- 239000010440 gypsum Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003795 desorption Methods 0.000 abstract description 4
- 238000006477 desulfuration reaction Methods 0.000 abstract description 4
- 230000023556 desulfurization Effects 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 description 12
- 238000005406 washing Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 239000000411 inducer Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Images
Landscapes
- Separating Particles In Gases By Inertia (AREA)
Abstract
A tube bundle for a demister and a tube bundle demister, wherein the tube bundle comprises a tube bundle cylinder, a flushing pipe is fixedly arranged at the axis of the tube bundle cylinder, at least one stage of guide vane wheel is axially arranged between the flushing pipe and the inner wall of the tube bundle cylinder at intervals, a flushing nozzle corresponding to the guide vane wheel is arranged on the flushing pipe, and a water retaining structure is arranged at the flue gas outlet end of the tube bundle cylinder; an inner cylinder is concentrically arranged between the smoke outlet end of the tube bundle cylinder and the upper end of the flushing pipe, and a shunting impeller is arranged on the flushing pipe which is positioned at the lower port of the inner cylinder. The utility model discloses can strengthen the desorption to tiny thick liquid droplet and dust particle in the flue gas after the desulfurization of coal power plant, prevent the production of "gypsum rain" phenomenon, also can further reduce the concentration of tiny dust particle in the flue gas simultaneously, guarantee that the flue gas is up to standard to discharge.
Description
Technical Field
The utility model relates to a desulfurizing tower flue gas dust removal defogging device, especially a tube bank and tube bank formula defroster for defroster.
Background
As known, desulfurization slurry of a coal-fired power plant is atomized by a nozzle and enters a spray tower, and fine fog drops are entrained to enter a demister and are used for trapping fog particles and slurry drops entrained by flue gas in the spray absorption process. If the defroster design is unreasonable, the flue gas liquid content after the defogging is very high, and the flue gas that the liquid content is very high reduces through chimney rear temperature, and the water smoke produces and condenses, can produce "gypsum rain" phenomenon. If the flue gas flow field is uneven, the flow velocity of the flue gas entering the partial area of the demister exceeds the limit flow velocity allowed by the demister, and the gypsum rain phenomenon can be caused. The gypsum rain phenomenon not only seriously affects the living environment of residents to cause environmental pollution, but also has adverse effect on the growth of plants and crops around the power plant, and affects the safe and civilized production of the power plant.
At present, the conventional tube bundle type demister consists of a tube bundle and a fixed plate, inherent swirl vanes are welded in the tube bundle, a circle of water retaining ring is arranged at the outlet end of the tube bundle, an inherent water pipe is arranged on the center line of the swirl vanes, and swirl vane washing nozzles are arranged on the water pipe. The existing tube bundle type demister is suitable for saturated clean flue gas with wide droplet particle size distribution range and large droplet amount, can realize separation of droplets with different particle sizes in the flue gas and can also enable flue gas flow field to be uniformly distributed, so that the demisting effect is better, but the separating effect aiming at more fine slurry droplets and dust particles is still to be improved.
Disclosure of Invention
In order to overcome prior art's the aforesaid not enough, the utility model provides a tube bank and tube bundle formula defroster for defroster can strengthen tiny thick liquid droplet and dust particle's desorption in the flue gas after the desulfurization of coal fired power plant, prevents the production of "gypsum rain" phenomenon, also can further reduce the concentration of tiny dust particle in the flue gas simultaneously, guarantees that the flue gas is up to standard to discharge.
The utility model provides a technical scheme that its technical problem adopted is:
a tube bundle for a demister comprises a tube bundle cylinder, wherein a flushing tube is fixedly arranged at the axis of the tube bundle cylinder, at least one stage of guide vane wheel is axially arranged between the flushing tube and the inner wall of the tube bundle cylinder at intervals, a flushing nozzle corresponding to the guide vane wheel is arranged on the flushing tube, and a water retaining structure is arranged at the flue gas outlet end of the tube bundle cylinder; an inner cylinder is concentrically arranged between the smoke outlet end of the tube bundle cylinder and the upper end of the flushing pipe, and a splitter impeller is arranged on the flushing pipe located at the lower port of the inner cylinder.
The smoke is firstly subjected to primary treatment by the guide impeller, larger slurry liquid drops and dust particles in the smoke are separated from gas under the action of centrifugal force, and through the design of the inner cylinder and the flow distribution impeller, the smoke containing fine slurry fog drops and dust particles respectively enters the inner cylinder and the inner wall of the tube bundle cylinder on the outer side of the inner cylinder after passing through the flow distribution impeller, the flow section of the tube bundle cylinder is reduced, the smoke is extruded, the flow velocity is increased, the collision probability of the fine liquid drops and the particles is increased, the smoke is gathered into larger liquid drops, the gas flow velocity of the smoke entering the inner cylinder is increased, the diameter of the inner cylinder is reduced, the smaller particles and the fog drops in the smoke rotate, collide, the gathered larger particles are thrown onto the inner wall of the inner cylinder under the action of the centrifugal force, and the efficient removal of the fine slurry fog drops and the dust particles is realized.
The utility model provides a technical scheme that its technical problem adopted is:
a tube bundle type demister comprises the tube bundle for the demister.
This technical scheme's defroster, form by the combination of a plurality of bundles for the defroster, because every bundle for the defroster all is equipped with the water conservancy diversion impeller of elementary dust removal dehydration and interior barrel + reposition of redundant personnel impeller's meticulous dust removal dehydration structure, finally better defogging effect and higher defogging efficiency have been realized, the desorption of tiny thick liquid droplet and dust particle in the flue gas after the desulfurization of coal-fired power plant has been strengthened to the enhancement, prevent the production of "gypsum rain" phenomenon, further reduce the concentration of tiny dust particle in the flue gas simultaneously, guarantee the purpose of flue gas discharge to reach standard.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 isbase:Sub>A cross-sectional view taken atbase:Sub>A-base:Sub>A in fig. 1.
Fig. 3 is a view from B in fig. 2.
The reference numbers in the figures illustrate:
1. tube bundle cylinder, 11, water-retaining structure;
2. a flushing pipe 21, a flushing nozzle 22, a water inlet 23 and a closed end part;
3. the guide vane wheel 31, the second-stage guide vane wheel 311, the second arc-shaped guide vane wheel 32, the first-stage guide vane wheel 321 and the first arc-shaped guide vane wheel;
4. an inner cylinder;
5. splitter vanes 51, inner ring vanes 52, outer ring vanes.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 to 3 show a schematic structural view of a preferred embodiment of the present invention, in which a tube bundle for a demister includes a tube bundle cylinder 1, a flushing pipe 2 is fixed at an axis of the tube bundle cylinder 1, and at least one guide vane wheel 3 is axially arranged between the flushing pipe 2 and an inner wall of the tube bundle cylinder 1; as is known, the washing pipe 2 is provided with a water outlet at the position where the guide vane wheel 3 is arranged, and a washing nozzle 21 corresponding to the guide vane wheel 3 can be further arranged on the washing pipe 2, so as to wash the leeward side of the guide vane wheel 3 and the inner wall of the tube bundle cylinder 1, wash down the slurry liquid drops and the smoke particles removed from the flue gas, and prevent the slurry liquid drops and the smoke particles from forming scale on the blades; the flue gas outlet end of the tube bundle cylinder 1 is necessarily provided with a water retaining structure 11, and further, the water retaining structure 11 may be a circle of water retaining ring arranged on the inner wall of the tube bundle cylinder 1. An inner cylinder 4 is concentrically arranged between the smoke outlet end of the tube bundle cylinder 1 and the upper end part of the flushing pipe 2, and a shunting impeller 5 is arranged on the flushing pipe 2 at the lower end opening of the inner cylinder 4.
The flue gas carrying the smoke dust and the slurry fog drops rotates after passing through the guide vanes, and the larger slurry liquid drops and dust particles in the flue gas are separated from the gas under the action of centrifugal force and thrown onto the inner wall of the tube bundle cylinder 1. Then the flue gas passes through after reposition of redundant personnel impeller 5 respectively get into between the inner wall of interior barrel 4 and tube bank barrel 1, wherein the circulation cross-section reduces between the inner wall of interior barrel 4 and tube bank barrel 1, the flue gas receives the extrusion, the velocity of flow increases, can increase the collision probability of tiny liquid drop and granule, thereby gather to get rid of between the inner wall of barrel 4 and tube bank barrel 1 for the large granule, realize the desorption from the flue gas, get into the flue gas of interior barrel 4 simultaneously, the velocity of air flow increases, simultaneously interior barrel 4 diameter reduces, less granule in the flue gas and fog drop rotate under the centrifugal force and collide the gathering into great granule and are got rid of on the inner wall of interior barrel 4 and are further got rid of.
In an alternative embodiment of this embodiment, the inducer 3 is provided in two stages, and the second-stage inducer 31 and the first-stage inducer 32 are arranged in sequence below the splitter impeller 5. The smoke carrying the smoke dust and the slurry fog drops passes through the first-stage guide impeller 32 and the second-stage guide impeller 31 in sequence, and then can rotate continuously, so that a relatively durable and powerful centrifugal effect can be obtained.
In an optional implementation manner of this embodiment, the second stage inducer 31 and the first stage inducer 32 are both formed by a plurality of arc-shaped inducer blades and are annularly arrayed around the flushing pipe 2. Namely, the first stage guide vane wheel 32 is provided with a first arc-shaped guide vane 321, and the second stage guide vane wheel 31 is provided with a second arc-shaped guide vane 311.
In an optional implementation manner of this embodiment, the splitter impeller 5 is composed of an inner ring impeller 51 and an outer ring impeller 52 that are concentrically arranged, and the inner ring impeller 51 and the outer ring impeller 52 are respectively used for conducting upward with the inner cylinder 4 and an annular cavity between the inner cylinder 4 and the tube bundle cylinder 1. The tube bundle cylinder 1 where the guide impeller is located is washed by washing water sprayed from the annular cavity nozzle, and the tube bundle cylinder 1 where the splitter impeller 5 is located is washed by washing water carried by flue gas from bottom to top by the inner ring impeller 51 and the outer ring impeller 52.
As one of the further preferred embodiments of this embodiment, the water inlet 22 of the flush pipe 2 is arranged at the flue gas inlet end of the tube bundle cylinder 1. The removed slurry liquid drops and smoke dust particles can be washed in time, and the accumulation of scale is avoided.
As a further preferable embodiment of this embodiment, the closed end 23 of the flushing pipe 2 in the inner cylinder 4 is in the shape of a guide cone. The existence of the closed end part 23 in the shape of a diversion cone can increase the rotating flow velocity of the gas in the inner cylinder, thereby ensuring that the separation effect of fine fog drops and dust particles is better.
As a further preferable embodiment of this embodiment, the flushing pipe 2 has a diameter-variable structure, and the pipe diameter of the portion where the guide vanes 3 are installed is larger than the pipe diameter of the portion between the guide vanes 3. The reducing can accelerate the washing water internally, and can increase the flow of the entering smoke at the front end externally, thereby improving the treatment efficiency.
In a further preferred design, the flushing nozzle 21 is arranged in the reducing transition pipe section of the flushing pipe 2 and is located on one side of the guide vane wheel 3 away from the water inlet 22. Wide washing coverage and strong washing force, thereby achieving the purpose of optimal washing effect.
The embodiment also provides a tube bundle type demister, which comprises the tube bundle for the demister. Wherein, it is a plurality of the tube bank for the demister is generally fixed by mount or fixed plate etc. and is become whole, installs in equipment such as desulfurizing tower as tube bank formula defroster for to being purified gas do high-efficient defogging before leaving the absorption tower and handle, prevented the production of "gypsum rain" phenomenon, guaranteed that the flue gas is up to standard to be discharged.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do the restriction in any form, all basis the utility model discloses a technical essence makes any simple modification and equal change to above embodiment, all falls into within the protection scope of the utility model.
Claims (10)
1. A tube bundle for a demister comprises a tube bundle cylinder, wherein a flushing tube is fixedly arranged at the axis of the tube bundle cylinder, at least one stage of guide vane wheel is axially arranged between the flushing tube and the inner wall of the tube bundle cylinder at intervals, a flushing nozzle corresponding to the guide vane wheel is arranged on the flushing tube, and a water retaining structure is arranged at the flue gas outlet end of the tube bundle cylinder; the method is characterized in that: an inner cylinder is concentrically arranged between the smoke outlet end of the tube bundle cylinder and the upper end of the flushing pipe, and a shunting impeller is arranged on the flushing pipe which is positioned at the lower port of the inner cylinder.
2. The demister tube bundle of claim 1, wherein: the guide vane wheel is provided with two stages, and the second stage guide vane wheel and the first stage guide vane wheel are sequentially arranged below the splitter vane wheel.
3. The tube bundle for a demister as set forth in claim 2, wherein: the second-stage guide vane wheel and the first-stage guide vane wheel are formed by a plurality of arc-shaped guide vanes and are annularly arrayed by taking the flushing pipe as a center.
4. A demister tube bundle as claimed in claim 1, 2 or 3, wherein: the flow distribution impeller is composed of an inner ring impeller and an outer ring impeller which are concentrically arranged, and the inner ring impeller and the outer ring impeller are respectively used for being communicated with the inner cylinder body upwards and an annular cavity between the inner cylinder body and the tube bundle cylinder body.
5. The demister tube bundle of claim 1, wherein: the water inlet of the flushing pipe is arranged at the flue gas inlet end of the tube bundle cylinder.
6. The tube bundle for a demister as set forth in claim 1, wherein: the closed end part of the flushing pipe in the inner cylinder body is in a diversion cone shape.
7. The demister tube bundle of claim 5 or 6, wherein: the flushing pipe is of a reducing structure, and the pipe diameter of the part where the guide vanes are installed is larger than that of the part between the guide vanes.
8. The demister tube bundle of claim 7, wherein: the flushing nozzle is arranged at the reducing transition pipe section of the flushing pipe and is positioned at one side of the diversion impeller, which deviates from the water inlet.
9. A demister tube bundle as set forth in claim 1, 2, 3, 5 or 6, wherein: the water retaining structure is a circle of water retaining ring arranged on the inner wall of the tube bundle cylinder.
10. The utility model provides a tube bank formula defroster which characterized by: comprising a demister tube bundle as defined in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221486645.7U CN218306743U (en) | 2022-06-15 | 2022-06-15 | Tube bundle for demister and tube bundle type demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221486645.7U CN218306743U (en) | 2022-06-15 | 2022-06-15 | Tube bundle for demister and tube bundle type demister |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218306743U true CN218306743U (en) | 2023-01-17 |
Family
ID=84866897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221486645.7U Active CN218306743U (en) | 2022-06-15 | 2022-06-15 | Tube bundle for demister and tube bundle type demister |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218306743U (en) |
-
2022
- 2022-06-15 CN CN202221486645.7U patent/CN218306743U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101254399B (en) | High-efficiency low energy consumption desulfurized dust removing equipment | |
| CN107551737B (en) | A kind of spiral atomization blowing and suction dust removal device of coal falling tower | |
| CN107413149A (en) | A kind of MDF dries the modified technique and processing system of tail gas biochemical processing method | |
| CN201101941Y (en) | Desulfurization and dust removal integrated device of fiberglass of industry coal-fired boiler | |
| CN209968001U (en) | Waste gas purification tower | |
| CN112023626A (en) | Flue gas treatment system and process | |
| CN218306743U (en) | Tube bundle for demister and tube bundle type demister | |
| CN2444139Y (en) | Adjustable wet venturi dust removing and disulfurizing intigrated device | |
| CN106000013A (en) | Wet desulfurization flue gas ultra-clean emission treatment system | |
| CN111111348B (en) | Wet purification device for pretreatment of waste gas treatment system | |
| CN111097249B (en) | Rotational flow-based high-efficiency turbulent flow atomization mixing desulfurization dust removal process | |
| CN220878213U (en) | Novel high-efficient wet dedusting tower | |
| CN106237724A (en) | A kind of sound wave coupled rotational flow racemization high-effective dust-removing demister | |
| CN108543632B (en) | Wet type cyclone dust collector capable of recycling washing liquid | |
| CN214437665U (en) | Centrifugal flue gas desulfurization denitration gas wash tower | |
| CN212999014U (en) | Matte granulation steam collection device | |
| CN208356382U (en) | A kind of welding flue gas second level washing purifying device | |
| CN212396361U (en) | Dedusting and demisting desulfurization tower | |
| CN211435576U (en) | Ammonium sulfate dust recovery processing system | |
| CN109550320A (en) | Dedusting demister and absorption tower | |
| CN208694471U (en) | A kind of tube bank rotation remittance gas-liquid-solid multiphase separator | |
| CN217662332U (en) | Novel wet purifier | |
| CN206881435U (en) | A kind of MDF dries exhaust gas processing device | |
| CN205886494U (en) | Flue gas degree of depth dust removal defogging water conservation unit reaches by its device of constituteing | |
| CN205627457U (en) | A dust removal defogging device and system for coal fired power plant tail flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |