CN204320092U - A kind of flue gas washing mechanism with convergent-divergent shape orifice plate - Google Patents
A kind of flue gas washing mechanism with convergent-divergent shape orifice plate Download PDFInfo
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- CN204320092U CN204320092U CN201420719029.0U CN201420719029U CN204320092U CN 204320092 U CN204320092 U CN 204320092U CN 201420719029 U CN201420719029 U CN 201420719029U CN 204320092 U CN204320092 U CN 204320092U
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- convergent
- orifice plate
- divergent shape
- flue gas
- shape orifice
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Abstract
A kind of flue gas washing mechanism with convergent-divergent shape orifice plate, comprise tower body, be arranged on the circulation liquid storage tank below tower body, tower body inside is disposed with convergent-divergent shape orifice plate, spraying layer and demister from bottom to top, tower body bottom is provided with smoke inlet, top is provided with absorption tower outlet, and the pipeline be connected between the spraying layer of circulation liquid storage tank and tower body is disposed with slurry circulating pump, flow control valve and flowmeter; Spraying layer Jet with downward flow direction goes out oxidisability serosa, convergent-divergent shape orifice plate makes up flue gas and fully mixes and caloic exchange along the spray liquid that wall is descending, in gas-liquid collision process, tear liquid film and make that gas-liquid mixture is oblique goes out the space that flaring orifice plate endoporus enters spraying layer and convergent-divergent shape orifice plate, make liquid film be secondary-atomizing state, further enhance gas-liquid collision and mixing.
Description
Technical field
The utility model relates to flue gas pollutant purification and washing desulfur denitrate dust collecting technical field, is specifically related to a kind of flue gas washing mechanism with convergent-divergent shape orifice plate.
Background technology
A large amount of uses in China due to coal, the pollutants such as a large amount of sulfur dioxide, nitrogen oxide and dust are discharged, these pollutants can react in an atmosphere mutually or with other pollutants, produce serious atmosphere pollution, compromise the living environment of the mankind, this is also the main contributor of Brownish haze phenomenon, hinders the sustainable development of national economy.The thermal power plant of the up-to-date promulgation of country and Industrial Boiler standard limit of smog release, propose stricter requirement to contaminant gases concentration of emissions such as dust, sulfur dioxide and nitrogen oxide.
At present to pollutant in flue gas, especially sulfur dioxide, nitrogen oxide and dust, remove technologies such as adopting desulfurizing tower, SCR and wet-esp respectively.In order to flue gas can be made to reach discharge standard, must remove this several pollutant, by this several technique coupling, not only financial cost is huge but also can take larger physical space.Therefore, in a system, simultaneous SO_2 and NO removal dedusting has larger advantage and application prospect undoubtedly.
In industrial process exhaust treatment system, flue washing device is a kind of effective equipment for removing particle and contaminant gases composition.Its general principle is in gas, spray into absorption slurries, contained contaminant gases in waste gas is fully mixed with the absorption slurries of ejection, occurs to react accordingly, thus be able to contaminant gases composition to be separated removal from flue gas.
In existing flue washing device, flue gas flow rate in tower in same cross section flow velocity be extremely uneven, some region flow velocity are high, and some region flow velocity are low.Solution is in tower, arrange that porous plate is to optimize flue gas flow field distribution in tower, improves degree of irregularity in tower, improves the mixing of liquid gas and strengthens heat and mass.But existing porous plate all adopts a large amount of column cavity that plate face distributes, and can play the effect of current-sharing, but gas disturbance is strong not, violent not with the reaction of slurries, the absorption of slurries to pollutant component can not be given full play to.And flue washing device only has single removal effect now, can not simultaneous SO_2 and NO removal dedusting.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the purpose of this utility model is to provide a kind of flue gas washing mechanism with convergent-divergent shape orifice plate, this convergent-divergent shape orifice plate is by convergent orifice plate, cylindrical orifice plate and gradually discharge hole plate superposition composition, effectively can increase speed when flue gas flows through internal surface of hole, thus effectively strengthen the disturbance of flue gas, and setting can strengthen flue gas disturbance in cylindrical hole, washing liquid film is impelled to produce the flow-disturbing atomization structure of secondary-atomizing, the liquid film produced when this type of flow-disturbing atomization structure destroys or thinning washing slurries flow through cylindrical hole inner surface, and then the flue gas after accelerated disturbance carries rising and tears atomization further, even if washing slurries produce secondary-atomizing, realize the abundant hybrid reaction of flue gas and washing slurries.And wash slurries and there is oxidisability function, can simultaneous SO_2 and NO removal dedusting, reduce the financial cost removing separately equipment, tail gas integrated treatment has significant advantage in industrial processes.
For reaching above object, the utility model adopts following technical scheme:
A kind of flue gas washing mechanism with convergent-divergent shape orifice plate, comprise tower body 3, be arranged on the circulation liquid storage tank 1 below tower body 3, described tower body 3 inside is disposed with convergent-divergent shape orifice plate 4, spraying layer 7 and demister 5 from bottom to top, tower body 3 bottom is provided with smoke inlet 2, top is provided with absorption tower outlet 6, and the pipeline be connected between the spraying layer 7 of described circulation liquid storage tank 1 and tower body 3 is disposed with slurry circulating pump 10, flow control valve 9 and flowmeter 8; Described convergent-divergent shape orifice plate 4 is superposed by convergent orifice plate 4-1, cylindrical perforated plate 4-2 and flaring orifice plate 4-3 and forms, thickness regulates according to actual conditions, and the convergent-divergent hole that superposition is formed is arranged in uniform array or is correspondingly adjusted to uneven arranged according to uneven the carrying out of flue gas on convergent-divergent shape orifice plate 4; Described convergent-divergent shape orifice plate 4, wherein the convergent hole of convergent orifice plate 4-1 and the flaring hole cone angle of flaring orifice plate 4-3 identical or different, or be processed as counter sink or cylindrical hole; The hole intermediate arrangement flow-disturbing atomization structure 4-4 of described cylindrical perforated plate 4-2.
Described this flow-disturbing atomization structure 4-4 arranges internal thread or arranges the network structure that many wire form or arrange spiral turbolator or arrange small-sized guide vane in the hole of cylindrical perforated plate 4-2.
Time flue gas flow rate is high, flow-disturbing atomization structure 4-4 adopts internal thread, adopts small-sized guide vane time flow velocity is low.
The hole intermediate arrangement same flow-disturbing atomization structure 4-4 of described cylindrical perforated plate 4-2 or arrange multiple different flow-disturbing atomization structure 4-4, selects according to flue gas current intelligence.
There is anti-wear corrosion-resistant coating on described convergent-divergent shape orifice plate 4 and flow-disturbing atomization structure 4-4 surface or adopts the material of anticorrosive anti-wear.
The slurries that described spraying layer 7 sprays have oxidisability function, simultaneous SO_2 and NO removal dedusting, and spraying layer 7 arranges one deck or arranging multiplayer.
Described demister 5 adopts broken line type or streamlined, arranges one deck or arranging multiplayer.
Described demister 5, spraying layer 7 and convergent-divergent shape orifice plate 4 are separate modular, adopt sealing bolt to connect, and increase or reduce according to actual conditions.
Described smoke inlet 2 or updip certain angle orthogonal with tower body 3, tower body 3 bottom is long and narrow cone.
The cone place long and narrow in tower body 3 bottom arranges deflector.
Compared to the prior art, tool has the following advantages the utility model:
1, the utility model adopts a kind of flue gas washing mechanism with convergent-divergent shape orifice plate, can increase by the rotation flue gas flow rate of orifice plate, the rotation disturbance strengthening spray water film and flue gas, exacerbate heat and mass transfer process, greatly increase slurries to the collision of polluter in flue gas, contact and assimilation effect, facilitate gas, liquid, solid and fully mix thus react more fully.Shape, the length in convergent-divergent shape aperture can change flexible adjustment according to the exhaust gas volumn of actual conditions and pressure reduction, also can arrange one or more layers, to reach optimum mass transfer effect.
2, spraying layer Jet with downward flow direction goes out oxidisability serosa, flow-disturbing atomization structure in cylindrical hole makes up flue gas and fully mixes and caloic exchange along the spray liquid that wall is descending, in gas-liquid collision process, tear liquid film and make that gas-liquid mixture is oblique goes out the space that flaring orifice plate endoporus enters spraying layer and convergent-divergent shape orifice plate, liquid film is made to be secondary-atomizing state, further enhance gas-liquid collision and mixing, and the disturbance of flue gas can be increased, strengthen the effect of gas-liquid mixed, increase the utilization rate of slurries, make reaction more fully, pollutant removing better effects if.
3, the utility model is by increasing the rotation flue gas disturbance of orifice plate, slurries are made to form secondary-atomizing, exacerbate heat and mass transfer process, greatly increase slurries to the collision of polluter in flue gas, contact and assimilation effect, facilitate gas, liquid, solid and fully mix thus react more fully; There are the slurries of oxidisability, NO can be oxidized to N
2o
5be dissolved in desulfurization spray liquid, realize desulphurization and denitration and fine particle (PM) removes simultaneously, save the physical space of desulphurization and denitration and the triple separate reactors of wet electrical dust precipitator and expensive cost.
4, the utility model adopts a kind of flue gas washing mechanism with convergent-divergent shape orifice plate, sprays the slurries of oxidisability function, carries out integration remove the pollutant in flue gas, removes compared with device, considerably reduce space, reduce financial cost with employing is single.
5, the utility model adopts the sprayed slurry of oxidisability to carry out reactive absorption to contaminant gases in flue gas and particle, and pollute little, removal efficiency is high, and can not produce secondary pollution, economy is high.
6, the utility model adopts a kind of flue gas washing mechanism with convergent-divergent shape orifice plate, flue gas tangentially enters tower body bottom from entrance, rotates and rises, increase at dwell time in the tower along wall, distribution is more even, is conducive to carrying out reactive absorption in convergent-divergent shape orifice plate region.
7, the utility model adopts modularized design, demister unit, spray unit and convergent-divergent shape orifice plate absorptive unit all adopt modularized design, each module adopts sealing bolt to connect, can increase as required or reduce module, arrange and regulate and control more flexible, compact conformation, is convenient to installation and removal.
8, the utility model convergent-divergent shape orifice surface scribbles resistant material, adds service life, reduces maintenance of equipment, changes the cost of orifice plate.
9, the utility model adopts a kind of flue gas washing mechanism with convergent-divergent shape orifice plate, has that volume is little, flexible arrangement, manufacture be simple, can adapt to from the process of large scale industry boiler smoke to multiple uses such as small-sized gas cleanings.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of flue gas washing mechanism with convergent-divergent shape orifice plate in the utility model.
Fig. 2 a is the side view of convergent-divergent shape orifice plate in the utility model.
Fig. 2 b is the front view of convergent-divergent shape orifice plate in the utility model.
Fig. 3 is the schematic perspective view of cylindrical perforated plate in the utility model.
Fig. 4 a is the schematic perspective view of a kind of flow-disturbing atomization structure in the utility model on cylindrical perforated plate.
Fig. 4 b is the schematic perspective view of the another kind of flow-disturbing atomization structure in the utility model on cylindrical perforated plate.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of flue gas washing mechanism with convergent-divergent shape orifice plate of the utility model, comprise tower body 3, be arranged on the circulation liquid storage tank 1 below tower body 3, described tower body 3 inside is disposed with convergent-divergent shape orifice plate 4, spraying layer 7 and demister 5 from bottom to top, tower body 3 bottom is provided with smoke inlet 2, and top is provided with absorption tower outlet 6, and the pipeline be connected between the spraying layer 7 of described circulation liquid storage tank 1 and tower body 3 is disposed with slurry circulating pump 10, flow control valve 9 and flowmeter 8;
As shown in Figure 2 a and 2 b, described convergent-divergent shape orifice plate 4 is superposed by convergent orifice plate 4-1, cylindrical perforated plate 4-2 and flaring orifice plate 4-3 and forms, thickness is according to actual conditions flexible modulation, the convergent-divergent hole that superposition is formed is arranged in uniform array on convergent-divergent shape orifice plate 4, also correspondingly can be adjusted to uneven arranged according to uneven the carrying out of flue gas;
Described convergent-divergent shape orifice plate 4, wherein the convergent hole of convergent orifice plate 4-1 and the flaring hole cone angle of flaring orifice plate 4-3 can be the same or different, and also can be processed as counter sink or cylindrical hole.
As shown in Fig. 2, Fig. 3, Fig. 4 a and Fig. 4 b, the hole intermediate arrangement flow-disturbing atomization structure 4-4 of described cylindrical perforated plate 4-2.
As shown in Figure 3, described this flow-disturbing atomization structure 4-4 arranges internal thread in the hole of cylindrical perforated plate 4-2, also can arrange the network structure that many wire form in hole, also can arrange spiral turbolator in hole or arrange that small-sized guide vane etc. can realize the structure of flow-disturbing effect.
As preferred embodiment of the present utility model, when flue gas flow rate is high time, flow-disturbing atomization structure 4-4 preferentially adopts internal thread, preferentially adopts small-sized guide vane time flow velocity is low.
The hole intermediate arrangement same flow-disturbing atomization structure 4-4 of described cylindrical perforated plate 4-2 or arrange multiple different flow-disturbing atomization structure 4-4, selects according to flue gas current intelligence.
As preferred embodiment of the present utility model, there is anti-wear corrosion-resistant coating on described convergent-divergent shape orifice plate 4 and flow-disturbing atomization structure 4-4 surface or adopts the material of anticorrosive anti-wear.
The slurries that described spraying layer 7 sprays have oxidisability function, simultaneous SO_2 and NO removal dedusting, and spraying layer 7 arranges one deck or arranging multiplayer.
Described demister 5 adopts broken line type or streamlined, arranges one deck or arranging multiplayer.
Described demister 5, spraying layer 7 and convergent-divergent shape orifice plate 4 are separate modular, adopt sealing bolt to connect, and increase or reduce according to actual conditions.
Described smoke inlet 2 or updip certain angle orthogonal with tower body 3, tower body 3 bottom is long and narrow cone.
As preferred embodiment of the present utility model, the cone place long and narrow in tower body 3 bottom arranges deflector.
Operation principle of the present utility model is: flue gas tangentially enters tower body 3 from smoke inlet 2, spiral, by convergent-divergent shape orifice plate 4, in the process by convergent-divergent shape orifice plate 4, flue gas is accelerated and is rotated, strengthening flue gas and spray liquid fully mix and the circumferential wall of oblique impacting desulfurization tower by swirl-flow devices, block the short circuit air flow that desulfurizing tower surrounding rises, flue gas turbulivity after acceleration increases fast, mix preferably with the absorption slurries sprayed from spraying layer 7 and react, the flue gas that the flow-disturbing atomization structures such as internal thread can make the slurries liquid film formed on convergent-divergent shape orifice plate bore area easily be accelerated disturbance carries rising, and be torn and be again atomized, improve the utilization rate absorbing slurries, pollutant removing better effects if.Contaminant gases in flue gas and particle are absorbed slurries parcel, reactive absorption enters in liquid and enters recycle slurry liquid pool 1, and reacted comparatively clean flue gas continues to rise, and after demister 5 demist, is discharged by exhanst gas outlet 6.
Claims (9)
1. the flue gas washing mechanism with convergent-divergent shape orifice plate, it is characterized in that: comprise tower body (3), be arranged on the circulation liquid storage tank (1) of tower body (3) below, described tower body (3) inside is disposed with convergent-divergent shape orifice plate (4) from bottom to top, spraying layer (7) and demister (5), tower body (3) bottom is provided with smoke inlet (2), top is provided with absorption tower outlet (6), the pipeline be connected between the spraying layer (7) of described circulation liquid storage tank (1) and tower body (3) is disposed with slurry circulating pump (10), flow control valve (9) and flowmeter (8),
Described convergent-divergent shape orifice plate (4) is superposed by convergent orifice plate (4-1), cylindrical perforated plate (4-2) and flaring orifice plate (4-3) and forms, thickness regulates according to actual conditions, and the convergent-divergent hole that superposition is formed to be arranged in uniform array or to be correspondingly adjusted to uneven arranged according to uneven the carrying out of flue gas convergent-divergent shape orifice plate (4) is upper;
Described convergent-divergent shape orifice plate (4), wherein the convergent hole of convergent orifice plate (4-1) and the flaring hole cone angle of flaring orifice plate (4-3) identical or different, or be processed as counter sink or cylindrical hole;
Hole intermediate arrangement flow-disturbing atomization structure (4-4) of described cylindrical perforated plate (4-2).
2. a kind of flue gas washing mechanism with convergent-divergent shape orifice plate according to claim 1, is characterized in that: described flow-disturbing atomization structure (4-4) for arranging internal thread or arranging the network structure that many wire form or arrange spiral turbolator or arrange small-sized guide vane in the hole of cylindrical perforated plate (4-2).
3. a kind of flue gas washing mechanism with convergent-divergent shape orifice plate according to claim 2, is characterized in that: time flue gas flow rate is high, flow-disturbing atomization structure (4-4) adopts internal thread, adopts small-sized guide vane time flow velocity is low.
4. a kind of flue gas washing mechanism with convergent-divergent shape orifice plate according to claim 1 and 2, it is characterized in that: hole intermediate arrangement same flow-disturbing atomization structure (4-4) of described cylindrical perforated plate (4-2) or arrange multiple different flow-disturbing atomization structure (4-4), select according to flue gas current intelligence.
5. a kind of flue gas washing mechanism with convergent-divergent shape orifice plate according to claim 1, is characterized in that: there is anti-wear corrosion-resistant coating on described convergent-divergent shape orifice plate (4) and flow-disturbing atomization structure (4-4) surface or adopts the material of anticorrosive anti-wear.
6. a kind of flue gas washing mechanism with convergent-divergent shape orifice plate according to claim 1, it is characterized in that: the slurries that described spraying layer (7) sprays have oxidisability function, simultaneous SO_2 and NO removal dedusting, spraying layer (7) arranges one deck or arranging multiplayer.
7. a kind of flue gas washing mechanism with convergent-divergent shape orifice plate according to claim 1, is characterized in that: described demister (5) adopts broken line type or streamlined, arranges one deck or arranging multiplayer.
8. a kind of flue gas washing mechanism with convergent-divergent shape orifice plate according to claim 1, it is characterized in that: described demister (5), spraying layer (7) and convergent-divergent shape orifice plate (4) are separate modular, employing sealing bolt connects, and increases or reduce according to actual conditions.
9. a kind of flue gas washing mechanism with convergent-divergent shape orifice plate according to claim 1, it is characterized in that: described smoke inlet (2) or updip certain angle orthogonal with tower body (3), tower body (3) bottom is long and narrow cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719029.0U CN204320092U (en) | 2014-11-25 | 2014-11-25 | A kind of flue gas washing mechanism with convergent-divergent shape orifice plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719029.0U CN204320092U (en) | 2014-11-25 | 2014-11-25 | A kind of flue gas washing mechanism with convergent-divergent shape orifice plate |
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| CN204320092U true CN204320092U (en) | 2015-05-13 |
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| CN201420719029.0U Withdrawn - After Issue CN204320092U (en) | 2014-11-25 | 2014-11-25 | A kind of flue gas washing mechanism with convergent-divergent shape orifice plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399367A (en) * | 2014-11-25 | 2015-03-11 | 西安交通大学 | Smoke washing device with scaling-shaped hole plate |
| CN104990771A (en) * | 2015-07-29 | 2015-10-21 | 广西壮族自治区特种设备检验研究院 | Multipoint measurement flue gas sampling device with cooling function |
| CN105597511A (en) * | 2016-01-04 | 2016-05-25 | 田鹏程 | Gas and liquid guiding device, gas and liquid guiding unit and desulfurization absorption device |
-
2014
- 2014-11-25 CN CN201420719029.0U patent/CN204320092U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399367A (en) * | 2014-11-25 | 2015-03-11 | 西安交通大学 | Smoke washing device with scaling-shaped hole plate |
| CN104990771A (en) * | 2015-07-29 | 2015-10-21 | 广西壮族自治区特种设备检验研究院 | Multipoint measurement flue gas sampling device with cooling function |
| CN105597511A (en) * | 2016-01-04 | 2016-05-25 | 田鹏程 | Gas and liquid guiding device, gas and liquid guiding unit and desulfurization absorption device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150513 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |