CN205002135U - Cigarette tower unification wet flue gas desulfurization eliminates tornado steel stack of " gypsum rain " - Google Patents
Cigarette tower unification wet flue gas desulfurization eliminates tornado steel stack of " gypsum rain " Download PDFInfo
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- CN205002135U CN205002135U CN201520227099.9U CN201520227099U CN205002135U CN 205002135 U CN205002135 U CN 205002135U CN 201520227099 U CN201520227099 U CN 201520227099U CN 205002135 U CN205002135 U CN 205002135U
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Abstract
The utility model discloses cigarette tower unification wet flue gas desulfurization eliminates tornado steel stack of " gypsum rain " is applied to cigarette tower unification wet flue gas desulfurization absorption tower. The flue gas forms artificial tornado under the combined effect in the induction action of swirl generator's positive action, variable -pitch whirl fin and geomagnetic field. Similar cyclone's equipment has been formed to chimney barrel and variable -pitch whirl fin, because the tangential velocity of flow of flue gas constantly increases, the gypsum powder in the flue gas receives the drag force of flue gas and the dual function of wall, and the conglomeration is condensed in the collision with higher speed in the runner. Moving chimney height's about 45 when the flue gas, desulfurized gypsum powder and supersaturation moisture content agglomerate in the flue gas, concentrating the centraxonial negative pressure area of spiral flow on, its focus is one skew slightly, is got rid of promptly inside and outside the flue gas that the swirl juncture falls and down. When chimney barrel top is flowed through to flue gas spiral flow that the tangential velocity of flow is greater than 20ms, remaining desulfurized gypsum powder and droplet in the flue gas, the centrifugal force that receives surpass its gravity hundreds of-nearly thousand times, got rid of into condensate backward flow water conservancy diversion cone, eliminated once more.
Description
Technical field
The present invention relates to ' the cyclone steel stack that " gypsum rain " is eliminated in nicotinic acids wet desulphurization ', be specifically related to a kind of nicotinic acids limestone-gypsum FGD plant being applicable to the large exhaust gas volumn such as thermal power plant, steel industry sintering machine, eliminate " gypsum rain " that it produces, solve its secondary pollution problem.
Background technology
The mainstream technology of power plants, steel industry flue gas of sintering machine is limestone-gypsum method.In conjunction with China's actual conditions, in order to reduce investment, the avoid GGH burn into sealing leak of (the rotary heat accumulating type heat exchanger between the former flue gas of heat and cold flue gas after desulfurization) and blockage problem, the basis of digestion introduction of foreign technology is improved, wet electrical dust precipitator is not established in top, many employings absorption tower, change and establish baffle type mist eliminator, and GGH and free-standing chimney is cancelled in device flow process, chimney is set directly at " nicotinic acids " technology at top, absorption tower.This technology is while reducing a large amount of sulfur dioxide, (desulfurization slurry atomization is carried secretly, desulfurization product crystallization to produce again the PM2.5 factor forming haze weather in a large number, thus encouraged the generation of haze i.e. well-known " gypsum rain ").Also be a PM2.5 generator and large-scale air humidifier, this becomes the extensive common recognition of environmental protection circle senior already simultaneously although this technology desulfurized effect is more stable!
Heat-engine plant wet desulfurization is that flue-gas temperature is reduced to 50 DEG C of discharges by 130 DEG C with water, like this, just has a large amount of steam droplets and is entered in air by smoke stack emission." wherein major part all becomes vaporific steam for the Thermal generation unit of 300,000 kilowatts, the wet desulphurization water that will expend general 30 ~ 40 tons per hour, and the water smoke of so only unit discharge in a day drips just hundreds of ~ nearly kiloton.If in addition the input dosage of desulfurizing agent and dust collection capacity not enough, the pollution factor of discharge can increase at double, and this is just for the quick formation of PM2.5 creates condition." the high-rise professional person of Geng You environmental protection circle supposes audaciously: " if Hebei is all closed down adopting the desulfurizer of wet desulphurization hollow-spraying-tower technology now, do not run, not desulfurization, haze weather will away from Hebei! " this can only be hypothesis certainly, because the harm of stopping desulfurization probably can be larger.
The present invention is applied in the nicotinic acids wet desulphurization device of this simple flow, can eliminate " gypsum rain " completely, and for dispersing haze, energy-saving and emission-reduction give a favor.
Summary of the invention
The object of the present invention is to provide a kind of structure simple, flue gas flow field is stablized, and eliminates the steel stack of " gypsum rain " excellent.Utilization Fluent software carries out multiphase flow flow field analysis and Practical Project ruuning situation shows, the present invention can not only eliminate " gypsum rain " that nicotinic acids wet desulphurization device produces effectively, and air-introduced machine can also economize on electricity 10% ~ 15%.
The object of the invention is to be achieved through the following technical solutions.
The present invention's primary structure from bottom to top comprises: the backflow of flue gas rotational flow generator, cigarette tower changeover portion, steel chimney cylinder, screw type flow-disturbing fin, varying pitch eddy flow fin, condensate liquid guiding cone, chimney breast cylindrical shell.
Described flue gas rotational flow generator is that petrochemical industry gas-liquid mass transferring tower kind equipment is general, horizontal positioned, and blade and horizontal plane angle are " the spiral board tower tray " of 45 °.
Described cigarette tower changeover portion is the transition section shell that the spinning between steel stack and absorption tower tower body is suppressed.
Described steel chimney cylinder is cylindrical shell, and its top to turning up, and is provided with multiple condensate liquid return port.
Described screw type flow-disturbing fin totally 3, is welded on chimney hull outside, is the flow-disturbing fin preventing Karman vortex street from causing chimney to resonate.
Described varying pitch eddy flow fin is for being welded on several eddy flow fins equally distributed on chimney barrel inwall, and bottom it, helical angle is 45 °, and top helical angle is 25 °.
Described condensate liquid backflow guiding cone is located between chimney barrel and chimney breast, and object is that the condensed water with desulfurated plaster isolated in High Rotation Speed flue gas is flow to inner wall of stack by return port.
Described chimney breast cylindrical shell lower end is to adduction, and to stop that " gypsum rain " escapes, and the fume emission that will eliminate " gypsum rain " is to air.
The present invention adopts the True Data of Practical Project, through rigorous technology Calculation, and uses Fluent software to carry out multiphase flow flow field analysis to be verified, flue gas flow field, temperature field, pressure field all very evenly, stable; Eliminate " gypsum rain " effect fine; Air-introduced machine power savings is obvious; Effects of energy saving and emission reduction is given prominence to.
Accompanying drawing explanation
Fig. 1 is the present invention's ' the cyclone steel stack of " gypsum rain " is eliminated in nicotinic acids wet desulphurization ' three-dimensional structure schematic diagram.
In figure: 1. flue gas rotational flow generator, 2. cigarette tower changeover portion, 3. steel chimney cylinder, 4. screw type flow-disturbing fin, 5. varying pitch eddy flow fin, 6. condensate liquid backflow guiding cone, 7. chimney breast cylindrical shell.
Fig. 2 is the present invention's ' the cyclone steel stack of " gypsum rain " is eliminated in nicotinic acids wet desulphurization ' appearance schematic diagram.
In figure: 2. cigarette tower changeover portion, 3. steel chimney cylinder, 4. screw type flow-disturbing fin, 6. condensate liquid backflow guiding cone, 7. chimney breast cylindrical shell.
Fig. 3 is flue gas rotational flow generator three-dimensional structure schematic diagram.
Fig. 4 is condensate liquid backflow guiding cone structural representation.
In figure: 3. steel chimney cylinder, 4. screw type flow-disturbing fin, 5. varying pitch eddy flow fin, 6. condensate liquid backflow guiding cone, 7. chimney breast cylindrical shell.
Detailed description of the invention
See Fig. 1, unique texture of the present invention is: flue gas rotational flow generator is that petrochemical industry gas-liquid mass transferring tower kind equipment is general, horizontal positioned, and blade and horizontal plane angle are " the spiral board tower tray " of 45 °; Cigarette tower changeover portion is the transition section shell that the spinning between steel stack and absorption tower tower body is suppressed; Steel chimney cylinder is cylindrical shell, and its top to turning up, and is provided with multiple condensate liquid return port; Screw type flow-disturbing fin totally 3, is welded on chimney hull outside, is the flow-disturbing fin preventing Karman vortex street from causing chimney to resonate; Varying pitch eddy flow fin is for being welded on several eddy flow fins equally distributed in chimney housing, and bottom it, helical angle is 45 °, and top helical angle is 25 °; Condensate liquid backflow guiding cone is located between chimney barrel and chimney breast, and object is that the condensed water with desulfurated plaster isolated in High Rotation Speed flue gas is flow to inner wall of stack by return port; Chimney breast cylindrical shell lower end to adduction, to stop that " gypsum rain " escapes.
Limestone-gypsum method adopts wet desulphurization hollow-spraying-tower technology, and flue gas flows from bottom to top, and desulfurizing agent and water droplet spray from top to bottom, the two collides mutually, mass transfer, heat transfer, reaction, remove SO
2and dust; Flue gas after desulfurization upwards flows, and enters present system by baffle type mist eliminator.First through flue gas rotational flow generator, the flue gas of axial flow is become counterclockwise rotational flow.Again under the inducing action of inner wall of stack varying pitch eddy flow fin and the synergy in earth's magnetic field, form the stable spiral flow that the tangential flow velocity of flue gas constantly promotes, kinetic energy constantly increases, and potential energy reduces gradually, i.e. artificial spout.The flue gas flow rate at top, absorption tower is 4 ~ 5m/s, and the flue gas flow rate bottom tower top chimney barrel is about 13m/s, and the chimney barrel top tangential flow velocity of flue gas will reach more than 20m/s.Gypsum powder in flue gas is subject to the drag force of flue gas and the double action of wall, accelerates collision cohesion conglomeration in runner.When flue gas runs to about 4/5 of chimney height, the desulfurated plaster powder in flue gas and supersaturation moisture content agglomerate, concentrate on the negative pressure band of spiral flow axis, this rotation agglomerate center of gravity slightly departs from, be namely thrown to vortex intersection inside and outside flue gas fall and under.Continue desulfurated plaster powder residual in the spiral flow flue gas risen and droplet, the centrifugal force be subject to increase to its gravity hundreds of ~ nearly thousand times, got rid of when flowing through chimney barrel top into condensate liquid backflow guiding cone, flow to inner wall of stack by return port and flow downward.The neat stress eliminating " gypsum rain " through twice separation is disposed to air by chimney breast cylindrical shell.Because flue gas flow rate is high, lift-off highly increases, and diffusion length is far away, and dilution effect is good, and ambient influnence reduces.
The invention has the advantages that:
1) flue gas rotational flow generator fluid resistance is little, and the flue gas of axial flow is become counterclockwise rotational flow.
2) under the positive action of flue gas rotational flow generator, the inducing action of varying pitch eddy flow fin and the synergy in earth's magnetic field, form the stable spiral flow that the tangential flow velocity of flue gas constantly promotes, kinetic energy constantly increases, and potential energy reduces gradually, i.e. artificial spout.
3) circular steel chimney barrel and varying pitch eddy flow fin constitute the equipment of similar cyclone separator, because the tangential flow velocity of flue gas constantly increases, gypsum powder in flue gas is subject to the drag force of flue gas and the double action of wall, accelerates collision cohesion conglomeration in runner.When flue gas runs to about 4/5 of chimney height, the desulfurated plaster powder in flue gas and supersaturation moisture content agglomerate, concentrate on the negative pressure band of spiral flow axis, its center of gravity slightly departs from, be namely thrown to vortex intersection inside and outside flue gas fall and under.Eliminate the maximum origin cause of formation of generation " gypsum rain ".
4) when the flue gas spiral flow that tangential flow velocity is greater than 20m/s flows through chimney barrel top, desulfurated plaster powder residual in flue gas and droplet, the centrifugal force be subject to exceed its gravity hundreds of ~ nearly thousand times, got rid of into condensate liquid backflow guiding cone, complete and the second time of " gypsum rain " eliminated.
5) cigarette tower changeover portion adopts spinning compacting housing, can reduce resistance, be conducive to Anticorrosion Construction.
6) being welded on the screw type flow-disturbing fin outside chimney barrel, is namely the shock-proof and damping device of steel stack.Effectively can abolish Karman vortex street, prevent the fatigue damage of steel stack, extend its service life.
7) because the flow of flue gas in chimney of the present invention is artificial spout, used the energy in earth's magnetic field, counterclockwise spiral flow centre creates parital vacuum, and its swabbing action can make air-introduced machine economize on electricity 10% ~ 15%, and energy-saving effect is remarkable.
8) the present invention is through twice elimination " gypsum rain ", and eradicating efficacy is fine, and chimney breast flue gas flow rate is high, and lift-off highly increases, and diffusion length is far away, and dilution effect is obvious, and ambient influnence is little.
Claims (2)
1. the cyclone steel stack of " gypsum rain " is eliminated in nicotinic acids wet desulphurization, it is characterized in that: its primary structure is from bottom to top: flue gas rotational flow generator (1) for petrochemical industry gas-liquid mass transferring tower kind equipment general, horizontal positioned, blade and horizontal plane angle be " the spiral board tower tray " of 45 °; The transition section shell that cigarette tower changeover portion (2) is suppressed for the spinning between steel stack and absorption tower tower body; Steel chimney cylinder (3) is cylindrical shell, and its top to turning up, and is provided with multiple condensate liquid return port; Being welded on the screw type flow-disturbing fin (4) totally 3 in steel chimney cylinder (3) outside, is the flow-disturbing fin preventing Karman vortex street from causing chimney to resonate; Varying pitch eddy flow fin (5) is for being welded on steel chimney cylinder (3) inwall several eddy flow fins equally distributed; Condensate liquid backflow guiding cone (6) is located between chimney barrel and chimney breast; Chimney breast cylindrical shell (7) is positioned at steel stack top.
2. the cyclone steel stack of " gypsum rain " is eliminated in nicotinic acids wet desulphurization according to claim 1, it is characterized in that: described varying pitch eddy flow fin (5) is for being welded on steel chimney cylinder (3) inwall several eddy flow fins equally distributed, bottom it, helical angle is 45 °, and top helical angle is 25 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520227099.9U CN205002135U (en) | 2015-04-16 | 2015-04-16 | Cigarette tower unification wet flue gas desulfurization eliminates tornado steel stack of " gypsum rain " |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520227099.9U CN205002135U (en) | 2015-04-16 | 2015-04-16 | Cigarette tower unification wet flue gas desulfurization eliminates tornado steel stack of " gypsum rain " |
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| CN205002135U true CN205002135U (en) | 2016-01-27 |
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| CN201520227099.9U Expired - Fee Related CN205002135U (en) | 2015-04-16 | 2015-04-16 | Cigarette tower unification wet flue gas desulfurization eliminates tornado steel stack of " gypsum rain " |
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Cited By (6)
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| CN108096935A (en) * | 2018-02-09 | 2018-06-01 | 江苏鑫复特环保科技有限公司 | Wet-esp outlet drain chimney dehydration device |
| CN108253439A (en) * | 2018-01-23 | 2018-07-06 | 董宁翘 | A kind of wind-proof type fume extractor |
| CN109925801A (en) * | 2019-03-13 | 2019-06-25 | 浙江浩普环保工程有限公司 | A kind of mechanical rotation disturbing flow device |
| CN114534377A (en) * | 2022-02-14 | 2022-05-27 | 山东莱钢永锋钢铁有限公司 | Device for reducing carrying of water drops of wet desulphurization direct-exhaust chimney and construction method |
| CN114682060A (en) * | 2020-12-30 | 2022-07-01 | 中国石油化工股份有限公司 | White smoke eliminating device and white smoke eliminating method |
| CN116182169A (en) * | 2023-02-13 | 2023-05-30 | 苏州天迎蓝智能环保科技有限公司 | Plunger heat accumulating type waste gas incinerator |
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2015
- 2015-04-16 CN CN201520227099.9U patent/CN205002135U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253439A (en) * | 2018-01-23 | 2018-07-06 | 董宁翘 | A kind of wind-proof type fume extractor |
| CN108096935A (en) * | 2018-02-09 | 2018-06-01 | 江苏鑫复特环保科技有限公司 | Wet-esp outlet drain chimney dehydration device |
| CN109925801A (en) * | 2019-03-13 | 2019-06-25 | 浙江浩普环保工程有限公司 | A kind of mechanical rotation disturbing flow device |
| CN114682060A (en) * | 2020-12-30 | 2022-07-01 | 中国石油化工股份有限公司 | White smoke eliminating device and white smoke eliminating method |
| CN114534377A (en) * | 2022-02-14 | 2022-05-27 | 山东莱钢永锋钢铁有限公司 | Device for reducing carrying of water drops of wet desulphurization direct-exhaust chimney and construction method |
| CN116182169A (en) * | 2023-02-13 | 2023-05-30 | 苏州天迎蓝智能环保科技有限公司 | Plunger heat accumulating type waste gas incinerator |
| CN116182169B (en) * | 2023-02-13 | 2024-03-12 | 苏州天迎蓝智能环保科技有限公司 | Plunger heat accumulating type waste gas incinerator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 Termination date: 20180416 |
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| CF01 | Termination of patent right due to non-payment of annual fee |