CN205412552U - Oval tubular defroster of low resistance forced air cooling - Google Patents
Oval tubular defroster of low resistance forced air cooling Download PDFInfo
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- CN205412552U CN205412552U CN201520897586.6U CN201520897586U CN205412552U CN 205412552 U CN205412552 U CN 205412552U CN 201520897586 U CN201520897586 U CN 201520897586U CN 205412552 U CN205412552 U CN 205412552U
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Abstract
The utility model discloses an oval tubular defroster of low resistance forced air cooling, cooling air automation diversion system including the oval tube bank defogging system of forced air cooling that sets up at the desulfurizing tower top, in being used for introducing oval tube bank with cold wind. The oval tube bank defogging system of forced air cooling includes that multilayer dot matrix stagger arrangement's cross -section is oval -shaped bank of tubes array, hierarchical directional sparge water system arranges by layering, array that a plurality of nozzles of water jet upwards and downwards at oval interbank constitute, the automatic diversion system of cooling air is including setting up respectively at facing the wind a plurality of wind direction divertors of end and the long -term wind direction of leeward end of bank of tubes array. This defroster combines together inertial separation and condensation separation, has that the defogging dust collection efficiency is high, the resistance is little, the energy consumption is economized, be difficult for characteristics such as scale deposit jam, water conservation, " the gypsum rain " that produce after can effectual reduction flue gas desulfurization.
Description
Technical field
This utility model relates to the flue gas in wet flue gas desulfurizer and removes mist, particularly relates to a kind of low-resistance air-cooled ellipse tube type demister.
Background technology
Produced a large amount of SO in the production process of the industries such as electric power, metallurgy, cement, petrochemical industry2Bring serious acid rain harm and haze weather, also result in and administer pressure greatly.At present, domestic widely used wet desulfurization of flue gas by limestone-gypsum method technology.But the flue gas after desulfurizing tower processes has carried certain droplet secretly, does not contain only moisture, also dissolved with sulphuric acid, sulfate, SO2And other subparticle.If being not seeking to remove, these droplet granules will be deposited on the exhaust pass inner surface of desulfurizing tower, causes corrosion and the blocking of equipment；Or it being discharged to chimney with flue gas, when entering air, near chimney, sedimentation produces " gypsum rain ".Therefore, auxiliary construction desulfurizer, improves desulfurization technology, takes corresponding measure to administer " gypsum rain " significant to the sustainable development of coal-burning utilities.
At present, engineering use mostly the demister of single type and demister be arranged in desulfurization tower top or neat stress exhaust pass.Common baffle type mist eliminator is difficult to remove the small particle droplet in flue gas and subparticle, and it is notable that conventional tube demister removes effect to particle diameter more than the big droplet of 400 μm, but the most poor to the removing effect of little droplet.It addition, demister directly rinses the slurry adhered on demister termly mainly by the nozzle on fixing pipe network by pipe network.There is certain flushing blind area in this washing form, is easily caused the fouling and clogging of demister, even affects the operation of whole unit when blocking serious.Therefore, the demister that how development is efficient under slight drag, be not easily blocked is an important directions of current demister development.
Summary of the invention
The purpose of this utility model is to solve tradition demister except mist efficiency of dust collection is low, the resistance of flow of flue gas is relatively big and rinses insufficient problem, it is provided that a kind of low-resistance air-cooled ellipse tube type demister.
This utility model is achieved through the following technical solutions:
A kind of low-resistance air-cooled ellipse tube type demister, including being arranged on the air-cooled elliptic tubes demister system at desulfurizing tower top, with for cold wind introduces the cooling wind auto-guiding system in air-cooled elliptic tubes demister system；
The a tube row that the ellipsoidal cross section tube bank 1 that described air-cooled elliptic tubes demister system is arranged by multilamellar dot matrix stagger arrangement is constituted, the two ends of oval tube bank 1 are respectively supported on tube sheet 2.
The major axis B of described oval tube bank 1 cross section is 1.5～2.5 times of short axle A；Flue gas stream enters from the bottom of a tube row, then is discharged by the top of a tube row.
Described cooling wind auto-guiding system, is constituted including the multiple wind direction air deflectors 4 being separately positioned on a tube row windward side 11 and leeward end 12；
Each wind direction air deflector 4 includes support bar 10, is arranged on support bar 10 deflector 9 with actuating device, is arranged on the horizontal rotation bar 6 of support bar 10 end, is arranged on the taper head 5 of horizontal rotation bar 6 end, is arranged on the horizontal rotation empennage 8 of bar 6 afterbody and the balance plate 7 being arranged on horizontal rotation bar 6；
Under the wind direction air deflector 4 interaction between empennage 8 and cold wind air-flow, make horizontal rotation bar 6 freely rotatable to the direction consistent with cold wind wind direction.Cold wind air-flow, under the drainage of deflector 9, is flowed in oval tube bank 1 by the windward side 11 of a tube row, then is flowed out oval tube bank 1 by the leeward end 12 of a tube row.
Described empennage 8 is made up of symmetrical two pieces of trapezoidal plates, two pieces of " V "-shaped combinations of trapezoidal plate.
Described air-cooled elliptic tubes demister system also includes one for the classification orientation flushing water system being rinsed a tube row.
Described classification orientation flushing water system by being layered, array is arranged in the nozzle 3 of the multiple jet water courses up and down between each oval tube bank 1 and constitutes.
A kind of low-resistance air-cooled ellipse tube type defogging method is as follows:
Wind direction air deflector 4 utilizes the interaction between empennage 8 and cold wind air-flow, makes horizontal rotation bar 6 freely rotatable to the direction consistent with cold wind wind direction；Cold wind air-flow, under the drainage of deflector 9, is flowed in oval tube bank 1 by the windward side 11 of a tube row；Flue gas enters from the bottom of a tube row, restrains 1 surface at ellipse and streams, the continuous deviation of its flow trace, makes partial particulate entrained in flue gas constantly clash into the outside wall surface of ellipse tube bank 1 under the effect of inertia force, separates with flue gas；There is the temperature difference with the cold wind of flowing in oval tube bank 1 in wet flue gas, makes entrained saturated vapor produce condensation in the outside wall surface of ellipse tube bank 1, and part subparticle occurs coalescence with steam, separates with flue gas.
Participating in the flue gas after heat exchange to discharge from the top of a tube row, cold wind is then flowed out oval tube bank 1 by the leeward end 12 of a tube row, is down the wind emitted in air.
This utility model, relative to prior art, has such advantages as and effect:
(1) high-effective dust-removing removes mist: oval tube bank is staggered in arrangement for layering, dot matrix, and the flow-disturbing of flue gas is produced certain effect.Eddy current is formed when flue gas flows in the tortuous passageway of oval pipe interfascicular alternating contractions and expansion, flue gas constantly deflects rising, fine particles constantly clashes into the outside wall surface of ellipse tube bank under the effect of inertia force, effectively increases impact rate, except mist efficiency of dust collection is higher.
(2) high-efficiency condensation heat exchange: introduce sub-cooled air in oval tube bank, increases the specific surface area of oval tube bank and smoke contacts, it is achieved that the efficient coalescence of fine particle in saturated wet flue gas.
(3) flow of flue gas is uniform, resistance is little: oval tube bank has the effect of uniform flue gas so that when flue gas enters a tube row, Flow Field Distribution is more uniform, and the local secondary effectively reducing flue gas carries the phenomenon poor with local detachment effect.Oval tube bank can also reduce the resistance of windward side, reduces separation loss when flue gas walks around oval tube bank both sides and drag losses.
(4) energy efficient: wind direction air deflector, by the horizontal rotation flexible rotating of bar and the air-flow thrust to empennage, can adjust water conservancy diversion angle automatically, efficient introduces sub-cooled air.There is not extra energy input in (passive) cooling wind auto-guiding system, is greatly saved operating cost.
(5) it is not easily blocked fouling: oval tube bank has milder radian, possesses good self-cleaning function.Air-cooled elliptic tubes demister system is provided with multistage comprehensive flooding nozzle, the flushing water of the upper strata bank of tubes in a tube row continues downwards to rinse lower floor's bank of tubes, the multiply flushing water of oval pipe interfascicular constantly converges, and effectively solves conventional tubular demister and easily blocks, there is the problem rinsing dead band.
(6) water-saving result is good: the steam entering air in tradition sulfur removal technology in a large number, by condensation, is reclaimed, reduces the water consumption of desulphurization system by this demister.
Accompanying drawing explanation
Fig. 1 is this utility model air-cooled elliptic tubes demister system structure sectional view.
Fig. 2 is the cross sectional representation of this utility model ellipse tube bank.
Fig. 3 is this utility model multiple wind direction flow-guiding device structure schematic diagram.
Fig. 4 is the plan structure schematic diagram of this utility model low-resistance air-cooled ellipse tube type demister.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is more specifically described in detail.
Embodiment
As shown in Figures 1 to 4.The utility model discloses a kind of low-resistance air-cooled ellipse tube type demister, including being arranged on the air-cooled elliptic tubes demister system at desulfurizing tower top, with for cold wind being introduced (passive) cooling wind auto-guiding system in air-cooled elliptic tubes demister system；
The a tube row that the ellipsoidal cross section tube bank 1 that described air-cooled elliptic tubes demister system is arranged by multilamellar dot matrix stagger arrangement is constituted, the two ends of oval tube bank 1 are respectively supported on tube sheet 2.
The major axis B of described oval tube bank 1 cross section is 1.5～2.5 times of short axle A；Flue gas stream enters from the bottom of a tube row, then is discharged by the top of a tube row.
Described cooling wind auto-guiding system, is constituted including the multiple wind direction air deflectors 4 being separately positioned on a tube row windward side 11 and leeward end 12；
Each wind direction air deflector 4 includes support bar 10, is arranged on support bar 10 deflector 9 with actuating device, is arranged on the horizontal rotation bar 6 of support bar 10 end, is arranged on the taper head 5 of horizontal rotation bar 6 end, is arranged on the horizontal rotation empennage 8 of bar 6 afterbody and the balance plate 7 being arranged on horizontal rotation bar 6；
Under the wind direction air deflector 4 interaction between empennage 8 and cold wind air-flow, make horizontal rotation bar 6 freely rotatable to the direction consistent with cold wind wind direction.Cold wind air-flow, under the drainage of deflector 9, is flowed in oval tube bank 1 by the windward side 11 of a tube row, then is flowed out oval tube bank 1 by the leeward end 12 of a tube row.
Described empennage 8 is made up of symmetrical two pieces of trapezoidal plates, two pieces of " V "-shaped combinations of trapezoidal plate.
Described air-cooled elliptic tubes demister system also includes one for the classification orientation flushing water system being rinsed a tube row.
Described classification orientation flushing water system by being layered, array is arranged in the nozzle 3 of the multiple jet water courses up and down between each oval tube bank 1 and constitutes.
Inertial separation, phase transformation separation principle are combined by this utility model, introduce the cooling air of low temperature in ellipse tube bank 1, to realize efficiently except mist.When flue gas with certain flow rate through a tube row, owing to parallel being staggered in arrangement of ellipse tube bank 1 constitutes narrow, tortuous exhaust gases passes so that flow velocity and the flow direction of flue gas change, the continuous deviation of flow trace and racing.Droplet and subparticle are due to density greatly, poor to the followability of flue gas, clash into the outside wall surface of ellipse tube bank 1 and separate with flue gas under the effect of inertia force；The cooling air of the flue gas constantly flowing internal with oval tube bank 1 that temperature is higher also exists certain temperature difference, and flue gas carries out condensation heat transfer in the outside wall surface of ellipse tube bank 1, and carrying capacity reduces.Fractional saturation steam release latent heat, constantly condensation is gathered into saturated drop, and with the subparticle that carries in flue gas at the outside wall surface generation coalescence of ellipse tube bank 1, effectively achieves gas-liquid separation.
This utility model uses classification orientation flushing water system, the flushing water impact sprayed vertically downward shunts and rinses downwards along smooth arc surface about during oval tube bank 1 top, and the flushing water vertically upward sprayed continues downward flushing after rinsing ellipse tube bank 1 curved surfaces under gravity.The flushing water constantly converged can effectively remove the dust and dirt and serosity remained in oval tube bank 1, improves the cleannes on oval tube bank surface.
This utility model utilizes the principle of equalising torque, is provided with the wind direction air deflector 4 with wind vane.Empennage 8 is made up of two pieces of symmetrical " V "-shaped trapezoidal plates, due to the existence of angle, reduces the unstable air inducing phenomenon that horizontal rotation bar 6 is brought because of self inertia rotation；When natural airflow is aweather to air deflector 4, empennage 8 produces rotating torques with the interphase interaction of air-flow, makes horizontal rotation bar 6 freely rotatable to the direction consistent with cold wind wind direction.Wind direction air deflector 4 has the adaptivity of height and without electric energy and other energy consumption, in the case of or change of the wind less at wind speed is little, can quickly follow wind direction all the time, be effectively increased the Drug delivery rate of cooling air.
The defogging method of this utility model low-resistance air-cooled ellipse tube type demister, can be achieved by the steps of:
Wind direction air deflector 4 utilizes the interaction between empennage 8 and cold wind air-flow, makes horizontal rotation bar 6 freely rotatable to the direction consistent with cold wind wind direction；Cold wind air-flow, under the drainage of deflector 9, is flowed in oval tube bank 1 by the windward side 11 of a tube row；Flue gas enters from the bottom of a tube row, restrains 1 surface at ellipse and streams, the continuous deviation of its flow trace, makes partial particulate entrained in flue gas constantly clash into the outside wall surface of ellipse tube bank 1 under the effect of inertia force, separates with flue gas；There is the temperature difference with the cold wind of flowing in oval tube bank 1 in wet flue gas, makes entrained saturated vapor produce condensation in the outside wall surface of ellipse tube bank 1, and part subparticle occurs coalescence with steam, separates with flue gas.
Participating in the flue gas after heat exchange to discharge from the top of a tube row, cold wind is then flowed out oval tube bank 1 by the leeward end 12 of a tube row, is down the wind emitted in air.
As it has been described above, just can preferably realize this utility model.
Embodiment of the present utility model is also not restricted to the described embodiments; other any without departing from the change made under spirit of the present utility model and principle, modify, substitute, combine, simplify; all should be the substitute mode of equivalence, within being included in protection domain of the present utility model.
Claims (6)
1. a low-resistance air-cooled ellipse tube type demister, it is characterised in that include the air-cooled elliptic tubes demister system being arranged on desulfurizing tower top, and for cold wind being introduced the cooling wind auto-guiding system in air-cooled elliptic tubes demister system；
The a tube row that ellipsoidal cross section tube bank (1) that described air-cooled elliptic tubes demister system is arranged by multilamellar dot matrix stagger arrangement is constituted, the two ends of oval tube bank (1) are respectively supported on tube sheet (2).
Low-resistance air-cooled ellipse tube type demister the most according to claim 1, it is characterised in that the major axis B of described oval tube bank (1) cross section is 1.5～2.5 times of short axle A；Flue gas stream enters from the bottom of a tube row, then is discharged by the top of a tube row.
Low-resistance air-cooled ellipse tube type demister the most according to claim 2, it is characterized in that, described cooling wind auto-guiding system, is constituted including the multiple wind direction air deflectors (4) being separately positioned on a tube row windward side (11) and leeward end (12)；
Each wind direction air deflector (4) includes support bar (10), is arranged on support bar (10) deflector (9) with actuating device, is arranged on the horizontal rotation bar (6) of support bar (10) end, is arranged on the taper head (5) of horizontal rotation bar (6) end, is arranged on the horizontal rotation empennage (8) of bar (6) afterbody and is arranged on the balance plate (7) horizontally rotated on bar (6)；
Under the wind direction air deflector (4) interaction between empennage (8) and cold wind air-flow, make horizontal rotation bar (6) freely rotatable to the direction consistent with cold wind wind direction；Cold wind air-flow, under the drainage of deflector (9), is flowed in ellipse tube bank (1) by the windward side (11) of a tube row, then is flowed out ellipse tube bank (1) by the leeward end (12) of a tube row.
Low-resistance air-cooled ellipse tube type demister the most according to claim 3, it is characterised in that described empennage (8) is made up of symmetrical two pieces of trapezoidal plates, two pieces of " V "-shaped combinations of trapezoidal plate.
5. according to the air-cooled ellipse tube type demister of low-resistance according to any one of Claims 1-4, it is characterised in that described air-cooled elliptic tubes demister system also includes one for the classification orientation flushing water system being rinsed a tube row.
Low-resistance air-cooled ellipse tube type demister the most according to claim 5, it is characterized in that, described classification orientation flushing water system by being layered, array is arranged in the nozzle (3) of the multiple jet water courses up and down between each oval tube bank (1) and constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520897586.6U CN205412552U (en) | 2015-11-11 | 2015-11-11 | Oval tubular defroster of low resistance forced air cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520897586.6U CN205412552U (en) | 2015-11-11 | 2015-11-11 | Oval tubular defroster of low resistance forced air cooling |
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| Publication Number | Publication Date |
|---|---|
| CN205412552U true CN205412552U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520897586.6U Withdrawn - After Issue CN205412552U (en) | 2015-11-11 | 2015-11-11 | Oval tubular defroster of low resistance forced air cooling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289182A (en) * | 2015-11-11 | 2016-02-03 | 华南理工大学 | Low-resistance air-cooled elliptical tube-type demister and demisting method |
-
2015
- 2015-11-11 CN CN201520897586.6U patent/CN205412552U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289182A (en) * | 2015-11-11 | 2016-02-03 | 华南理工大学 | Low-resistance air-cooled elliptical tube-type demister and demisting method |
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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 | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20171020 |