CN107051008A - A kind of pneumatic combined demisting separator of flat board - Google Patents
A kind of pneumatic combined demisting separator of flat board Download PDFInfo
- Publication number
- CN107051008A CN107051008A CN201710465991.4A CN201710465991A CN107051008A CN 107051008 A CN107051008 A CN 107051008A CN 201710465991 A CN201710465991 A CN 201710465991A CN 107051008 A CN107051008 A CN 107051008A
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- Prior art keywords
- defogging
- blade
- flat
- cylinder
- blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
本发明涉及一种平板气动组合式除雾分离装置，属于湿法烟气脱硫除雾装置领域。所述平板气动组合式除雾分离装置包括筒体、第一除雾装置和第二除雾装置；所述筒体包括顶部圆柱筒体和底部六棱柱筒体，所述顶部圆柱筒体和底部六棱柱筒体相通，且所述第一除雾装置布置在底部六棱柱筒体内部，所述第二除雾装置布置在顶部圆柱筒体内部。本发明所述平板气动组合式除雾分离装置具有结构简单实用，操作方便，成本低廉，便于推广普及等优点。
The invention relates to a flat-plate pneumatic combined demisting and separating device, which belongs to the field of wet flue gas desulfurization and demisting devices. The flat-plate pneumatic combined defogging and separating device includes a cylinder body, a first demister device and a second demist device; The hexagonal cylinders communicate with each other, and the first demisting device is arranged inside the bottom hexagonal cylinder, and the second demisting device is arranged inside the top cylindrical cylinder. The flat-panel pneumatic combined defogging and separating device of the present invention has the advantages of simple and practical structure, convenient operation, low cost, easy popularization and the like.
Description
Technical Field
The invention relates to a flat pneumatic combined type demisting and separating device, and belongs to the field of wet flue gas desulfurization and demisting devices.
Background
The limestone-gypsum wet flue gas desulfurization technology is the main technical measure currently used in China for treating the flue gas pollution containing a large amount of sulfur dioxide discharged by coal-fired power plants, is the most mature and widely applied desulfurization technology at home and abroad, and is applied to more than 95 percent at home. The wet limestone-gypsum flue gas desulfurizing process is to utilize limestone desulfurizing agent to spray and absorb the harmful gas containing sulfur dioxide in coal burning boiler flue gas, and to contact and react the desulfurizing agent slurry and the flue gas to absorb the harmful gas to purify the flue gas.
The flue gas after being purified is sprayed and absorbed, and a large amount of fog drops and dust still remain in the flue gas, wherein the fog drops comprise water fog, sulfuric acid fog drops generated when the sulfur trioxide which is not removed meets water, calcium sulfate and calcium sulfite liquid drops generated by desulfurization reaction, and the like, and the fog drops in the flue gas must be removed by a demister before the flue gas is discharged from a desulfurization tower, so that strong acid fog drops, calcium sulfite liquid drops and the like contained in the flue gas are prevented from corroding follow-up equipment such as a flue and the like and scaling on the surface of the equipment is prevented.
In the current domestic desulfurization project, the forms of the demister are generally flat plate type and ridge type, and both types are widely applied. The ridge demister is high in efficiency, but the ridge demister is large in pressure loss and energy consumption of a demisting system, the height of the ridge demister is about 2.6m generally, and investment is high; the flat plate type demister is relatively low in efficiency, simple in design, low in pressure loss, generally 3.2-3.4 m in height and relatively low in investment. For improving defogging efficiency, the flat tubular defroster of general combination formula defroster device universal adoption adds individual layer or double-deck ridge formula baffling board defroster. However, because the flow rate of flue gas in the system is high, a large amount of particles with large particle sizes are carried in the flue gas, the flat-plate type tubular demister can generate local blocking phenomenon to cause uneven distribution of the flow rate of the flue gas, the using effect of the downstream ridge type demister is influenced, and the demisting effect of the demister is poor and the national environmental protection requirement cannot be met. Furthermore, the uneven coverage of the washing water film caused by surface tension factors, the elastic collision of the liquid drops and the plate sheet and the re-back mixing of the liquid drops and the entering smoke are one of the key reasons for the reduction of the demisting efficiency.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the high-efficiency low-resistance flat plate pneumatic combined demisting separating device which has high demisting efficiency, low resistance, small installation space and stable and reliable operation.
The purpose of the invention is realized by the following technical scheme:
a flat pneumatic combined demisting and separating device comprises a cylinder, a first demisting device and a second demisting device; the cylinder body comprises a top cylindrical cylinder body and a bottom hexagonal prism cylinder body, the top cylindrical cylinder body is communicated with the bottom hexagonal prism cylinder body, the first demisting device is arranged in the bottom hexagonal prism cylinder body, and the second demisting device is arranged in the top cylindrical cylinder body; wherein,
the outer contour of the first demisting device is a hexagonal prism corresponding to the bottom hexagonal prism cylinder, and the outer diameter of the first demisting device corresponds to the inner diameter of the bottom hexagonal prism cylinder; the first demisting device comprises a blade clamp and a plurality of sinusoidal demisting blades, the blade clamp is horizontally arranged, and the sinusoidal demisting blades are vertically arranged on the blade clamp at equal intervals;
the second demisting device comprises a blade positioning cylinder, a blind plate and a plurality of flat plate type swirl blades; the blade positioning cylinder is cylindrical, and the outer diameter of the blade positioning cylinder corresponds to the inner diameter of the top cylindrical cylinder; the blind plate is cylindrical and is arranged along the central shaft of the blade positioning cylinder; the flat plate type rotational flow blades are uniformly arranged in the blade positioning cylinder along the circumferential direction of the blind plate.
Furthermore, one or more blade clamps are arranged on the top surface of the first defogging device, each blade clamp is a long shaft support, and a plurality of mounting holes are formed in the long shaft support and used for mounting the sine defogging blades.
Further, sinusoidal defogging blade includes the straight portion and the central arc portion of its both sides, the straight portion of one side of sinusoidal defogging blade is installed on the blade anchor clamps of first defogging device top surface, and its installation spacing is 25 mm.
Further, one or more blade clamps are arranged on the bottom surface of the first demisting device, and the number of the blade clamps arranged on the top surface or the bottom surface of the first demisting device is not more than 4.
Furthermore, the straight portion of the other side of the sinusoidal defogging blade is arranged on the blade clamp on the bottom surface of the first defogging device.
Furthermore, the first defogging device is buckled, bonded or welded on the inner wall of the bottom hexagonal prism cylinder body through the two ends of the blade clamp, or bonded or welded on the inner wall of the bottom hexagonal prism cylinder body through the two ends of the sine defogging blade.
Further, the number of the flat plate type rotational flow blades is 16-24, the flat plate type rotational flow blades are sequentially and obliquely arranged on the blind plate, and the included angle between each flat plate type rotational flow blade and the horizontal plane is 20-45 degrees; one or more layers of flat type rotational flow blades are arranged inside the blade positioning cylinder, and the longitudinal distance between every two layers of flat type rotational flow blades is 300-800 mm.
Furthermore, the flat plate pneumatic combined type demisting separation device is arranged above a spraying layer in the desulfurization absorption tower, wherein the longitudinal distance between the first demisting device and the second demisting device is 100-800 mm.
Further, the cross section of the bottom hexagonal prism cylinder body is in a regular hexagon shape; the sine type demisting blades are sequentially and symmetrically arranged on the blade clamp from the middle of the blade clamp to the two ends of the blade clamp from large to small according to the length of the blades.
Furthermore, a clamping groove is formed in the outer portion of the blade positioning cylinder, and the second demisting device is fixed inside the top cylindrical barrel through the clamping groove.
Furthermore, one end of the flat plate type rotational flow blade is fixed on the blind plate, and the other end of the flat plate type rotational flow blade is fixed on the inner wall of the blade positioning cylinder.
The invention has the beneficial effects that:
the flat pneumatic combined demisting separation device forms a novel flue gas demisting channel jointly formed by arranging the sine demisting blades and the flat rotational flow blades in the vertical direction of the cylinder through the first demisting device and the second demisting device respectively. First defogging device and the equal nimble dismantlement of second defogging device, convenient washing and maintenance. After the anti-corrosion treatment, the flue gas demisting channel formed by the arrangement of the sinusoidal demisting blades and the flat swirl blades can give consideration to structural strength, manufacturing cost and maintenance convenience on the premise of achieving the optimal demisting effect, and the defect that the existing demister cannot give consideration to structural strength, demisting effect, production cost and maintenance convenience is completely overcome. In addition, the flat-plate pneumatic combined type demisting and separating device also has the advantages of simple and practical structure, convenience in operation, low cost, convenience in popularization and the like.
Drawings
FIG. 1 is a cross-sectional view of a flat panel pneumatic combination mist separator device according to the present invention;
FIG. 2 is a top view of the flat plate pneumatic combination mist removal separator device of the present invention;
FIG. 3 is a schematic structural diagram of a first defogging device according to the present invention;
the device comprises 2-a flat plate type swirl vane, 3-a vane positioning cylinder, 4-a blind plate, 5-a vane clamp, 6-a sine type demisting vane, 7-a top cylindrical barrel and 8-a bottom hexagonal prism barrel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A flat pneumatic combined demisting separation device is shown in figure 1 and comprises a cylinder, a first demisting device and a second demisting device; the cylinder body comprises a top cylindrical cylinder body 7 and a bottom hexagonal prism cylinder body 8, the top cylindrical cylinder body 7 is communicated with the bottom hexagonal prism cylinder body 8, the first demisting device is arranged inside the bottom hexagonal prism cylinder body 8, and the second demisting device is arranged inside the top cylindrical cylinder body 7.
As shown in fig. 3, the outer contour of the first defogging device is a hexagonal prism corresponding to the bottom hexagonal prism 8, and the outer diameter of the first defogging device corresponds to the inner diameter of the bottom hexagonal prism 8. The first demisting device comprises a blade clamp 5 and a plurality of sinusoidal demisting blades 6, wherein the blade clamp 5 is horizontally arranged, and the sinusoidal demisting blades 6 are vertically arranged on the blade clamp 5 at equal intervals. Specifically, the blade clamp 5 is a long shaft support, and a plurality of mounting holes are formed along the long shaft support and used for mounting the sinusoidal defogging blades 6.
One or more blade clamps 5 are arranged on the top surface of the first demisting device, preferably, one or more blade clamps 5 are also arranged on the bottom surface of the first demisting device, and the number of the blade clamps 5 arranged on the top surface or the bottom surface of the first demisting device is not more than 4.
Sinusoidal defogging blade 6 includes the straight portion and the central arc portion of its both sides, the straight portion in one side of sinusoidal defogging blade 6 is installed on the blade anchor clamps 5 of first defogging device top surface, and its installation spacing is 25 mm. The straight portion of the other side of sinusoidal defogging blade 6 is installed on blade anchor clamps 5 of first defogging device bottom surface.
The cross section of the bottom hexagonal prism cylinder 8 is a regular hexagon; the sine type demisting blades 6 are sequentially and symmetrically arranged on the blade clamp 5 from the middle of the blade clamp 5 to the two ends of the blade clamp 5 from large to small according to the length of the blades.
The first defogging device is buckled, bonded or welded on the inner wall of the bottom hexagonal prism cylinder body 8 through the two ends of the blade clamp 5, or bonded or welded on the inner wall of the bottom hexagonal prism cylinder body 8 through the two ends of the sine defogging blade 6.
As shown in fig. 2, the second demisting device comprises a blade positioning cylinder 3, a blind plate 4 and a plurality of flat plate type swirl blades 2; the blade positioning cylinder 3 is cylindrical, and the outer diameter of the blade positioning cylinder corresponds to the inner diameter of the top cylindrical cylinder 7; the blind plate 4 is cylindrical and is arranged along the central shaft of the blade positioning cylinder 3; the flat plate type rotational flow blades 2 are uniformly arranged in the blade positioning cylinder 3 along the circumferential direction of the blind plate 4.
The number of the flat plate type rotational flow blades 2 is 16-24, and the flat plate type rotational flow blades are sequentially and obliquely arranged on the blind plate 4. The flat type cyclone blades are arranged in the blade positioning cylinder in 1-3 layers, and the longitudinal distance between every two layers of flat type cyclone blades 2 is 300-800 mm. The included angle between the flat plate type rotational flow blade 2 and the horizontal plane is 20-45 degrees, namely the installation deflection angle of the flat plate type rotational flow blade 2 is 20-45 degrees. One end of the flat plate type rotational flow blade is fixed on the blind plate, and the other end of the flat plate type rotational flow blade is fixed on the inner wall of the blade positioning cylinder.
The outside of the blade positioning cylinder 3 is provided with a clamping groove, and the second demisting device is fixed inside the top cylindrical cylinder 7 through the clamping groove.
The flat plate pneumatic combined type demisting separation device is arranged above a spraying layer in the desulfurization absorption tower, wherein the longitudinal distance between the first demisting device and the second demisting device is 100-800 mm.
The working principle is as follows: according to the needs of specific operating mode, place this pneumatic combination formula of flat board defogging separator in wet process flue gas desulfurization system, still there are more fog drops in the flue gas after being purified through spraying absorption, wherein fog drop includes water smoke, the sulfuric acid fog drop that does not get rid of sulfur trioxide and meet the water and produce, calcium sulfate and the calcium sulfite liquid drop that the desulfurization reaction produced, the flue gas gets into this pneumatic combination formula of flat board defogging separator through the delivery conduit, at first flow through the sinusoidal wave form defogging runner that is formed by sinusoidal type defogging blade in first defogging device, because the deflection of streamline, utilize the inertial collision of liquid drop to realize gas-liquid separation, detach most great liquid drops in the flue gas. At the moment, the flue gas with the residual small liquid drops continuously flows to the second demisting device along the cylinder, and when the flue gas flows through a spiral demisting flow channel formed by the flat plate type swirl vanes in the second demisting device, gas-liquid separation is realized under the action of centrifugal force, and the residual small liquid drops in the flue gas are further removed. The non-distortion design of flat whirl blade is effectual, reduce the possibility of blade scale deposit, can prevent the advantage of blade jam, therefore the high defogging efficiency of cigarette speed is high when the flue gas is followed spiral defogging runner simultaneously.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465991.4A CN107051008A (en) | 2017-06-19 | 2017-06-19 | A kind of pneumatic combined demisting separator of flat board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465991.4A CN107051008A (en) | 2017-06-19 | 2017-06-19 | A kind of pneumatic combined demisting separator of flat board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107051008A true CN107051008A (en) | 2017-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710465991.4A Pending CN107051008A (en) | 2017-06-19 | 2017-06-19 | A kind of pneumatic combined demisting separator of flat board |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1066871A1 (en) * | 1999-07-07 | 2001-01-10 | Mackowiak, Jerzy, Dr.-Ing. habil. | Device for separating liquid drops from a gas flow, in particular from air |
| CN104971553A (en) * | 2015-07-21 | 2015-10-14 | 中国科学院广州能源研究所 | Multi-level composite efficient gas-liquid separation device |
| CN204865263U (en) * | 2015-06-02 | 2015-12-16 | 枣强县莱伯特环保设备有限公司 | Glass steel baffling board defroster |
| CN205760172U (en) * | 2016-05-06 | 2016-12-07 | 浙江天蓝环保技术股份有限公司 | A kind of sub-demister of high gas velocity eddy flow |
| CN206881310U (en) * | 2017-06-19 | 2018-01-16 | 大唐环境产业集团股份有限公司 | A kind of pneumatic combined demisting separator of flat board |
-
2017
- 2017-06-19 CN CN201710465991.4A patent/CN107051008A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1066871A1 (en) * | 1999-07-07 | 2001-01-10 | Mackowiak, Jerzy, Dr.-Ing. habil. | Device for separating liquid drops from a gas flow, in particular from air |
| CN204865263U (en) * | 2015-06-02 | 2015-12-16 | 枣强县莱伯特环保设备有限公司 | Glass steel baffling board defroster |
| CN104971553A (en) * | 2015-07-21 | 2015-10-14 | 中国科学院广州能源研究所 | Multi-level composite efficient gas-liquid separation device |
| CN205760172U (en) * | 2016-05-06 | 2016-12-07 | 浙江天蓝环保技术股份有限公司 | A kind of sub-demister of high gas velocity eddy flow |
| CN206881310U (en) * | 2017-06-19 | 2018-01-16 | 大唐环境产业集团股份有限公司 | A kind of pneumatic combined demisting separator of flat board |
Non-Patent Citations (2)
| Title |
|---|
| 兰州石油机械研究所: "《现代塔器技术 （第 2 版）》", 31 January 2005 * |
| 张磊等: "《电厂锅炉湿法脱硫设备检修技术》", 31 July 2015 * |
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Application publication date: 20170818 |