CN105749734B - Adaptive boiling type foam desulfation dust-extraction device - Google Patents
Adaptive boiling type foam desulfation dust-extraction device Download PDFInfo
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- CN105749734B CN105749734B CN201610281990.XA CN201610281990A CN105749734B CN 105749734 B CN105749734 B CN 105749734B CN 201610281990 A CN201610281990 A CN 201610281990A CN 105749734 B CN105749734 B CN 105749734B
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- transfer elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/04—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour through foam
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- 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
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a kind of adaptive boiling type foam desulfation dust-extraction devices, mass transfer elements including being used to carry out fluid in desulfuration absorbing tower mass transfer, the mass transfer elements are platy structure, the mass transfer elements include at least three subregions being arranged side by side along longitudinal direction, be equipped with side by side along longitudinal direction on each subregion at least two groups for fluid by hole, every group of hole is made of the hole of two kinds of different pore sizes, the laterally spaced setting in hole of two kinds of different pore sizes in every group of hole, and the cross section in the hole is trapezoidal.The present invention can not only improve the uniformity of flue gas, strengthen gas-liquid mass transfer efficiency, while have serum recycle amount and unit load compared with high-adaptability, improve the deep removal effect to sulfur dioxide and dust.
Description
Technical field
The present invention relates to filed of flue gas purification, more particularly to a kind of adaptive boiling type foam desulfation dust-extraction device.
Background technology
As country is for the proposition of coal-fired minimum discharge policy, traditional desulfurization and dedusting technology be difficult meet it is ultralow
Strict emission index under emission request by the optimization and improvement to existing apparatus, promotes the desulfurization and collaboration of existing apparatus
Efficiency of dust collection becomes a kind of mode presently the most effectively with economy.Existing desulfurating dust-removing equipment is mainly the following：
1. the Chinese patent of Patent No. 200710093042.4 discloses a kind of biphase rectification flue gas desulfurization technique, profit
With the inhomogeneities of spray flow field in tower, the design of cowling panel and spraying layer will not deliberately carry out uniformly liquid phase and gas phase
Rectification, the resistance of flue gas is opposite to become smaller, and will not cause the flow velocity of flue gas reduces, and gas phase and liquid phase are relatively uneven so that liquid phase
It is remained in the state of turbulent flow with gas phase and carries out countercurrent reaction, optimized flow field, reduce system pressure drop, reach energy saving drop
Consumption and the purpose for reducing installation cost and maintenance cost；
2. the Chinese patent of Patent No. 201110447122.1 discloses a kind of the de- of band-offset streaming biphase rectification device
Sulphur absorption tower, by being equipped with bias current formula biphase rectification device, bias current formula biphase rectification dress between spraying layer and smoke inlet
It puts including horizontally disposed cowling panel, cowling panel is flowed to perpendicular to smoke inlet divides region, on the cowling panel in each region
It is provided with sieve pore and the sieve pore density close to smoke inlet region is more than the sieve pore density far from smoke inlet region, according to flue gas
Into the inhomogeneities of smoke distribution during desulfuration absorbing tower, the sieve pore density in the region that flue gas concentration is low, flow velocity is low is more than flue gas
The sieve pore density in the region that concentration is high, flow velocity is high, therefore the flue gas resistance of cowling panel each region is different, flue gas passes through cowling panel
When be rectified it is uniformly distributed, so as to make smoke distribution uniform, to improve desulfuration efficiency；
3. the Chinese patent of Patent No. 201520212632.4 discloses a kind of coal-fired plant flue gas multi-pollutant depth
Purification control coupled system, including economizer system, double mixed rectifications carry effect SCR flue gas denitrification systems, high efficiency electrostatic dust pelletizing system,
Wet method subregion carries effect desulphurization system, biphase rectification phase transformation condensed system and wet electrostatic depth control system, and system above is successively
Connection, double mixed rectifications carry effect SCR flue gas denitrification systems and include ammonia-gas spraying device, denitrating catalyst and rectification regulating device, wet method point
Area is put forward effect desulphurization system and is arranged on using a tower partition system or two tower double loop coupled systems, biphase rectification phase transformation condensed system
Wet electrostatic depth control system inlet.
As it can be seen that the prior art is all based on the commutation system of conventional porous harden structure design, by setting perforated plate construction
The mass transfer effect of flue gas and slurries is improved, however, due to the aperture all same in each hole on traditional porous plate, and be straight
Hole prevents it from the efficient removal of effectively realizing dust, and stream field adaptivity is poor, and mass-transfer efficiency is low, does not have load tune
Function is saved, reduces removal effect.
Therefore, it is badly in need of developing a kind of uniformity that can not only improve flue gas, strengthens gas-liquid mass transfer efficiency, while to slurries
Internal circulating load and unit load have compared with high-adaptability, improve the adaptive boiling of the deep removal effect to sulfur dioxide and dust
Formula foam desulfation dust-extraction device.
Invention content
It in view of this, can not only the purpose of the present invention is to provide a kind of adaptive boiling type foam desulfation dust-extraction device
The uniformity of flue gas is enough improved, strengthens gas-liquid mass transfer efficiency, while have serum recycle amount and unit load compared with high-adaptability,
Improve the deep removal effect to sulfur dioxide and dust.
The adaptive boiling type foam desulfation dust-extraction device of the present invention, passes fluid in desulfuration absorbing tower including being used for
The mass transfer elements of matter, the mass transfer elements are platy structure, which includes at least three points being arranged side by side along longitudinal direction
Area, be equipped with side by side along longitudinal direction on each subregion at least two groups for fluid by hole, every group of hole by two kinds of different pore sizes hole
It forms, the laterally spaced setting in hole of two kinds of different pore sizes in every group of hole, the cross section in the hole is trapezoidal.
Further, the cross section in the hole is isosceles trapezoid, and the diameter in hole is more than the diameter of lower opening, hole wall and lower opening thereon
Angle α between end face is 90~165 °.
Further, the porosity in hole being distributed on each subregion is unequal porosity.
Further, the upper hole in the hole and the diameter of lower opening are determined by porosity, i.e.,
In formula, K is porosity, d1For upper bore dia, d2For lower bore dia, ε is constant, and it is adjacent that the value range of ε, which is 0.8~1.0, L,
Spacing between the upper bore edges in two holes.
Further, the hole on each subregion is arranged in polygon.
Further, each subregion is respectively individual plate body, and mass transfer elements are made of the splicing of each plate body.
Further, the thickness of the plate body is 3~20mm.
Further, the mass transfer elements are arranged in desulfuration absorbing tower, smoke inlet and desulfurization positioned at desulfuration absorbing tower
Between the slurries spraying layer set in absorption tower.
Further, the distance between smoke inlet of the mass transfer elements and desulfuration absorbing tower is 500~2000mm.
Further, in use, the slurries spray of slurries spraying layer forms to carry out load to fluid in mass transfer elements
The boiling type froth bed of adjusting, the height of the boiling type froth bed is 100~500mm.
Beneficial effects of the present invention：The adaptive boiling type foam desulfation dust-extraction device of the present invention, by setting plate knot
The mass transfer elements of structure, mass transfer elements include at least three subregions being arranged side by side along longitudinal direction, are set side by side along longitudinal direction on each subregion
Have at least two groups for fluid by hole, every group of hole be made of the hole of two kinds of different pore sizes, two kinds of different pore sizes in every group of hole
The laterally spaced setting in hole, and the cross section in hole makes it that can not only improve the uniformity of flue gas to be trapezoidal, strengthens gas-liquid and passes
Matter efficiency, while have serum recycle amount and unit load compared with high-adaptability, it improves and the depth of sulfur dioxide and dust is taken off
Except effect.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structure diagram of mass transfer elements of the present invention；
Fig. 3 is the sectional view along A-A of Fig. 2；
Fig. 4 is use state diagram of the present invention.
Specific embodiment
Fig. 1 is the structural diagram of the present invention, Fig. 2 be mass transfer elements of the present invention structure diagram, Fig. 3 for Fig. 2 A-A to
Sectional view, Fig. 4 are use state diagram of the present invention, and direction shown in arrow is fluid flow direction in figure, and the flow direction of wherein flue gas is
From bottom to top, the flow direction of slurries is from top to bottom, as shown in the figure：The adaptive boiling type foam desulfurization and dedusting dress of the present embodiment
It puts, the mass transfer elements 1 including being used to carry out fluid in desulfuration absorbing tower 4 mass transfer, the mass transfer elements 1 are platy structure, should
Mass transfer elements include at least three subregions being arranged side by side along longitudinal direction (the first subregion 21, the second subregion 22, third subregion 23), often
On a subregion along longitudinal direction side by side be equipped at least two groups for fluid by hole, every group of hole by two kinds of different pore sizes hole (hole
I31, hole II32) it forms, hole (hole I31, hole II32) laterally spaced setting of two kinds of different pore sizes, the present embodiment in every group of hole
Mass transfer elements 1 on setting there are six subregion (the first subregion 21, the second subregion 22, third subregion 23, the 4th subregion the 24, the 5th
Subregion 25, the 6th subregion 26), each subregion is equipped with two groups of holes, the aperture in every group of hole Zhong Liangzhong holes and the porosity in each hole
Determined according to the Flow Field Distribution situation of flue gas, the cross section of the hole (hole I31 or hole II32) is trapezoidal, enable slurries along
The hole wall in hole flows downward, and fluid can be buffered and Load Regulation using trapezium structure by hole, in this way can not only
The uniformity of flue gas is improved, strengthens gas-liquid mass transfer efficiency, while have serum recycle amount and unit load compared with high-adaptability, pole
The earth improves the deep removal effect to sulfur dioxide and dust.
In the present embodiment, the cross section of the hole (hole I31 or hole II32) is isosceles trapezoid, thereon hole (the upper hole of hole I
The upper hole of 31a or hole II) diameter be more than lower opening (lower opening of the lower opening 31b or hole II of hole I) diameter, can be to fluid
Flow controlled, realize Load Regulation, angle α between hole wall and lower hole end surface is 90~165 °, enables slurries edge
It hole wall to flow downward, slurries is formed and are buffered, be more conducive to strengthen gas-liquid mass transfer efficiency in this way, ensure flue gas and slurries energy
It is enough preferably to combine, and Load Regulation ability is further improved, improve adaptability.
In the present embodiment, the porosity in the hole being distributed on each subregion is unequal porosity, to improve the adaptation of stream field
Ability further enhances adaptivity.
In the present embodiment, the upper hole (the upper hole 31a of hole I or the upper hole of hole II) of the hole (hole I31 or hole II32) and under
The diameter in hole (lower opening of the lower opening 31b or hole II of hole I) determined by porosity, i.e.,Formula
In, K is porosity, d1For upper bore dia, d2For lower bore dia, ε is constant, and it is adjacent two that the value range of ε, which is 0.8~1.0, L,
Spacing between the upper bore edges in a hole makes the setting in hole and distribution more reasonable, further improves Load Regulation ability in this way,
Mass-transfer efficiency is high, and adaptive ability is good, improves removal effect.
In the present embodiment, the hole on each subregion arranges that the hole on each subregion of the present embodiment can be used in polygon
Triangle or square or rectangular or parallelogram or other polygon modes are arranged, to improve adaptive ability.
In the present embodiment, each subregion is respectively individual plate body, and mass transfer elements 1 are made of the splicing of each plate body, convenient for adding
Work manufactures；Certainly, each subregion may also be arranged on a plate body.
In the present embodiment, the thickness of the plate body is 3~20mm, to ensure the intensity of plate body, and convenient for manufacture.
In the present embodiment, the mass transfer elements 1 are arranged in desulfuration absorbing tower 4, positioned at the smoke inlet of desulfuration absorbing tower 4
Between 5 and the interior slurries spraying layer 6 set of desulfuration absorbing tower 4,6 downward sprayed slurry of slurries spraying layer, slurries flow from up to down
Dynamic, the flue gas that smoke inlet 5 enters flows up, and the hole that slurries and flue gas are flowed through in mass transfer elements 1 carries out mass transfer.
In the present embodiment, the distance between smoke inlet 5 of the mass transfer elements 1 and desulfuration absorbing tower 4 for 500~
2000mm ensures that flue gas fully can completely flow through mass transfer elements, economical and practical to maximize raising mass-transfer efficiency.
In the present embodiment, in use, the slurries 7 of slurries spraying layer 6 spray in mass transfer elements 1 formed for fluid into
The boiling type froth bed 8 of row Load Regulation, the height of the boiling type froth bed 8 is 100~500mm, passes through boiling type froth bed 8
Part foam fall into the hole of mass transfer elements 1, slurries is enable to flow downward along the hole wall in hole, further to 7 He of slurries
Flue gas carries out Load Regulation, to improve mass-transfer efficiency.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail in good embodiment, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (7)
1. a kind of adaptive boiling type foam desulfation dust-extraction device, it is characterised in that：Including being used for fluid in desulfuration absorbing tower
The mass transfer elements of mass transfer are carried out, the mass transfer elements are platy structure, which sets side by side along longitudinal direction including at least three
The subregion put, be equipped with side by side along longitudinal direction on each subregion at least two groups for fluid by hole, every group of hole is by two kinds of different holes
The hole of diameter forms, the laterally spaced setting in hole of two kinds of different pore sizes in every group of hole, and the cross section in the hole is trapezoidal；The hole
Cross section for isosceles trapezoid, the diameter in hole is more than the diameter of lower opening thereon, the angle α between hole wall and lower hole end surface for 90~
165°；The porosity in the hole being distributed on each subregion is unequal porosity；The upper hole in the hole and the diameter of lower opening pass through hole
Rate determines, i.e.,In formula, K is porosity, d1For upper bore dia, d2For lower bore dia, ε is constant,
The value range of ε is the spacing between the upper bore edges that 0.8~1.0, L is two neighboring hole.
2. adaptive boiling type foam desulfation dust-extraction device according to claim 1, it is characterised in that：On each subregion
Hole is arranged in polygon.
3. adaptive boiling type foam desulfation dust-extraction device according to claim 1, it is characterised in that：Each subregion difference
For individual plate body, mass transfer elements are made of the splicing of each plate body.
4. adaptive boiling type foam desulfation dust-extraction device according to claim 3, it is characterised in that：The thickness of the plate body
It spends for 3~20mm.
5. adaptive boiling type foam desulfation dust-extraction device according to claim 1, it is characterised in that：The mass transfer elements
Be arranged in desulfuration absorbing tower, the slurries spraying layer set in the smoke inlet and desulfuration absorbing tower of desulfuration absorbing tower it
Between.
6. adaptive boiling type foam desulfation dust-extraction device according to claim 5, it is characterised in that：The mass transfer elements
The distance between smoke inlet of desulfuration absorbing tower is 500~2000mm.
7. adaptive boiling type foam desulfation dust-extraction device according to claim 5, it is characterised in that：In use, slurries
The slurries of spraying layer spray the boiling type froth bed formed in mass transfer elements for carrying out Load Regulation to fluid, the boiling type
The height of froth bed is 100~500mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281990.XA CN105749734B (en) | 2016-04-29 | 2016-04-29 | Adaptive boiling type foam desulfation dust-extraction device |
| PCT/CN2016/095407 WO2017185564A1 (en) | 2016-04-29 | 2016-08-16 | Self-adaptive boiling-type foam desulfurization and dust-removing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281990.XA CN105749734B (en) | 2016-04-29 | 2016-04-29 | Adaptive boiling type foam desulfation dust-extraction device |
Publications (2)
| Publication Number | Publication Date |
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| CN105749734A CN105749734A (en) | 2016-07-13 |
| CN105749734B true CN105749734B (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610281990.XA Active CN105749734B (en) | 2016-04-29 | 2016-04-29 | Adaptive boiling type foam desulfation dust-extraction device |
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| CN (1) | CN105749734B (en) |
| WO (1) | WO2017185564A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749734B (en) * | 2016-04-29 | 2018-06-22 | 中电投远达环保工程有限公司重庆科技分公司 | Adaptive boiling type foam desulfation dust-extraction device |
| CN108014620A (en) * | 2017-12-04 | 2018-05-11 | 重庆精创联合环保工程有限公司 | The integrated processing technique of flue gas minimum discharge |
| CN111330416B (en) * | 2020-04-13 | 2024-03-12 | 华能国际电力股份有限公司 | Wet desulfurization efficiency improving device and working method thereof |
| CN112755748A (en) * | 2020-12-21 | 2021-05-07 | 通化金山银山环保设备制造有限公司 | Boiler dual-alkali desulphurization method |
| CN114272702B (en) * | 2021-12-28 | 2022-12-30 | 重庆大学 | Boiling type foam desulfurization dust removal mass transfer component, design method thereof and desulfurization dust removal device |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000354728A (en) * | 1999-06-16 | 2000-12-26 | Babcock Hitachi Kk | Gas-liquid contact device |
| JP2006122862A (en) * | 2004-11-01 | 2006-05-18 | Mitsubishi Heavy Ind Ltd | Apparatus for treating exhaust gas |
| CN201710990U (en) * | 2010-06-25 | 2011-01-19 | 唐山三友化工股份有限公司 | Variable aperture dual-flow sieve-plate tower |
| CN201848206U (en) * | 2010-06-30 | 2011-06-01 | 中电投远达环保工程有限公司 | Flue gas desulfurization biphase rectifier and flue gas desulfurization system |
| CN202105573U (en) * | 2011-03-03 | 2012-01-11 | 山东科技大学 | Novel unevenly porous air distribution plate |
| CN102489145B (en) * | 2011-12-28 | 2013-09-11 | 中电投远达环保工程有限公司 | Desulphurization absorbing tower with refracted flow type double-phase rectifying device |
| CN202654927U (en) * | 2012-05-22 | 2013-01-09 | 黄盛珠 | Rotational flow rectification gas-liquid absorbing tower |
| CN204233970U (en) * | 2014-10-30 | 2015-04-01 | 江苏苏境电力科技有限责任公司 | The board-like airflow uniform distribution device of a kind of flue gas desulfurization demister |
| CN204582914U (en) * | 2015-05-07 | 2015-08-26 | 武汉凯迪电力环保有限公司 | The gas-liquid distributor that a kind of non-homogeneous perforate is arranged |
| CN204601979U (en) * | 2015-05-13 | 2015-09-02 | 张国志 | Absorption tower current equalizer |
| CN205007842U (en) * | 2015-08-11 | 2016-02-03 | 南京中电环保科技有限公司 | Wet flue gas desulfurization system |
| CN105749734B (en) * | 2016-04-29 | 2018-06-22 | 中电投远达环保工程有限公司重庆科技分公司 | Adaptive boiling type foam desulfation dust-extraction device |
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2016
- 2016-04-29 CN CN201610281990.XA patent/CN105749734B/en active Active
- 2016-08-16 WO PCT/CN2016/095407 patent/WO2017185564A1/en active Application Filing
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| WO2017185564A1 (en) | 2017-11-02 |
| CN105749734A (en) | 2016-07-13 |
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Address after: No. 96, Jinyu Avenue, new North District, Chongqing 401122 Patentee after: SPIC YUANDA ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. CHONGQING SCIENCE AND TECHNOLOGY BRANCH Address before: No. 96, Jinyu Avenue, new North District, Chongqing 401122 Patentee before: CPI YUANDA ENVIRONMENTAL-PROTECTION ENGINEERING CO.LTD.CHONGQING SCIENCE & TECHNOLOGY BRANCH |
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Effective date of registration: 20230427 Address after: No.96 Jinyu Avenue, new North District, Yubei District, Chongqing Patentee after: National electric investment group Yuanda Environmental Protection Engineering Co.,Ltd. Address before: No. 96, Jinyu Avenue, new North District, Chongqing 401122 Patentee before: SPIC YUANDA ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. CHONGQING SCIENCE AND TECHNOLOGY BRANCH |