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CN102728201A - Double-vortex high-efficiency flue gas denitration desulphurization dedusting cleaning device - Google Patents

Double-vortex high-efficiency flue gas denitration desulphurization dedusting cleaning device Download PDF

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Publication number
CN102728201A
CN102728201A CN2012102207572A CN201210220757A CN102728201A CN 102728201 A CN102728201 A CN 102728201A CN 2012102207572 A CN2012102207572 A CN 2012102207572A CN 201210220757 A CN201210220757 A CN 201210220757A CN 102728201 A CN102728201 A CN 102728201A
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flue gas
desulfurizing tower
cleaning device
pipe
pipeline
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CN2012102207572A
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Chinese (zh)
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李伟东
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Abstract

The invention provides a double-vortex high-efficiency flue gas denitration desulphurization dedusting cleaning device which comprises four desulfurization towers that are located in a same plane and are in rectangular distribution, wherein work platforms are arranged between each desulfurization tower, a first desulfurization tower is communicated with a clarification tank through a first pipeline, a second desulfurization tower is communicated with an absorption liquid tank through a second pipeline, a third desulfurization tower is communicated with the second pipeline, a fourth desulfurization tower is communicated with the first pipeline, and the first desulfurization tower, the second desulfurization tower, the third desulfurization tower and the fourth desulfurization tower are connected with the absorption liquid tank through pipelines respectively. The device provided in the invention can overcome disadvantages of the prior art, can capture dust particles with a particle size less than 8 mu m in flue gas and enables operation cost of a dedusting system to be low.

Description

The efficient denitrating flue gas desulfurization and dedusting of two eddy current cleaning device
Technical field
The present invention relates to cleaner, is a kind of pair of efficient denitrating flue gas desulfurization and dedusting of eddy current cleaning device.
Background technology
Flue gas desulfurization and dedustings such as the heating furnace of coal-burning boiler, oil refining enterprise and catalyst furnace are general to adopt existing Wet-type desulfurize and dust removing equipment to accomplish; Because these equipment mainly are to lean on centrifugal force that grit is got rid of to barrel, grit is caught by the moisture film on the barrel and is reached the dedusting purpose then.The deficiency of these equipment is: when the composition of grit is identical; Particle diameter is more little, weight is lighter, centrifugal force is more little, so many particle diameters are difficult to be thrown toward barrel less than the grit of 8 μ m, some in addition can not be thrown toward barrel; Thereby can't contact with moisture film and be hunted down, and the gas phase SO in the flue gas 2Dirt is more difficult is effectively caught, and causes pollutant still to be disposed in the atmosphere, causes environmental pollution, though cleaner has been installed by many heavily contaminateds dischargings enterprise though Here it is, still has many disposals of pollutants in atmosphere, causes the basic reason of environmental pollution; The other deficiency of these equipment is, very easily fouling along with the time of using increases, is cleaned difficulty, and operating cost rises gradually, causes some enterprise can't normally open cleaner.
Summary of the invention
The purpose of this invention is to provide a kind of pair of efficient denitrating flue gas desulfurization and dedusting of eddy current cleaning device, it can solve the deficiency of prior art, and it can catch in the flue gas grit less than 8 μ m, and makes dust pelletizing system operating cost low.
The present invention is for realizing above-mentioned purpose, and realize through following technical scheme: the efficient denitrating flue gas desulfurization and dedusting of two eddy current cleaning device comprises four desulfurizing towers; Four desulfurizing towers are positioned at same plane; Rectangular distribution is provided with workbench between each desulfurizing tower, and first desulfurizing tower is connected with depositing reservoir through first pipeline; Second desulfurizing tower is connected with the absorption flow container through second pipeline; The 3rd desulfurizing tower is connected with second pipeline, and the 4th desulfurizing tower is connected with first pipeline, and first desulfurizing tower, second desulfurizing tower, the 3rd desulfurizing tower and the 4th desulfurizing tower are connected with the absorption flow container respectively through pipeline.The spin swirler is installed in the 3rd desulfurizing tower, and the spin swirler has a bowl-shape separation hood, a bipyramid particulate is installed on the bowl-shape separation hood is at least removed pipe, and sewage draining exit is offered in bowl-shape separation hood bottom.It is isometrical pipe that the bipyramid particulate is removed the pipe middle and lower part, and the upper end of isometrical pipe joins with the smaller diameter end of big truncated conical pipe, and the lower end of isometrical pipe and the smaller diameter end of little truncated conical pipe are joined, and the length of big truncated conical pipe is greater than the length of little truncated conical pipe.The length of big truncated conical pipe and the equal in length of little truncated conical pipe, isometrical pipe are positioned at the middle part that the bipyramid particulate is removed pipe.The inwall of big truncated conical pipe and bipyramid particulate are removed the angle between the vertical center line of managing 1Be 8 °-15 °, the inwall of little truncated conical pipe and bipyramid particulate are removed the angle between the vertical center line of managing 2It is 6 °-8 °.Mist separator is installed in the 4th desulfurizing tower, and mist separator has a droplet cylinder, and the spin vortex tube is installed in droplet cylinder upper end; The top of spin vortex tube is smog gas inlet; The inlet diameter of spin vortex tube is greater than outlet diameter, and the port of export of spin vortex tube is connected with spiral tube, and the maximum gauge end of spiral tube joins with the port of export of spin vortex tube; Through hole is offered in the bottom of droplet cylinder, and the biconial flue is installed in the through hole.Spiral tube is that maximum gauge, spiral tube dwindle from being changed to evenly of minimum diameter of the port of export of maximum gauge to spiral tube gradually with the port of export joint of spin vortex tube.Bottom one side of droplet cylinder is installed discharging tube.One end of biconial flue is positioned at droplet cylinder inner chamber, and the other end is positioned at outside the droplet cylinder.Depositing reservoir top is connected with the 3rd pipeline one end, and the 3rd pipeline other end is connected with surge tank top.
The of the present invention pair of efficient denitrating flue gas desulfurization and dedusting of eddy current cleaning device; Adopt four desulfurizing towers in a plane, to install; Link together through workbench between each desulfurizing tower, constitute stable cube formula structure, the structure of this combined type desulfurizing tower can adopt the desulfur pump of low lift and large flow rate to carry various liquid such as absorption liquid, cleaning fluid; Than high tower configuration saves energy consumption, generally reduce the energy and reach about 40% than high tower structure.The present invention has installed structures such as spin swirler and mist separator in desulfurizing tower, can remove SO simultaneously 3, the capture rate of particle diameter in the flue dust less than the grit of 8 μ m reached about 90%; The whole system non-scaling, no pressure drop, through detecting, the flue gas liquid-gas ratio of discharge is 0.7L/m 3-, the flue gas moisture content is less than 8%, and efficiency of dust collection is greater than 98%, and flue dust enters concentration less than 80mg/Nm in grate furnace 3-, desulfuration efficiency is greater than 95%, and whole system operating cost is very low, be derived as about 1/3rd of prior art through test, and maintenance capacity is extremely low.Whole system belongs to open self-cleaning system, and is non-maintaining.
Description of drawings
Accompanying drawing 1 is four desulfurizing tower installation site structural representations according to the invention; Accompanying drawing 2 is accompanying drawing 1 plan structure sketch mapes; Accompanying drawing 3 is that four desulfurizing towers of the present invention launch back and each member connection structure sketch map; Accompanying drawing 4 is structural representations of the spin swirler 12 of installation in the 3rd desulfurizing tower; Accompanying drawing 5 is structure intentions of the mist separator 11 of installation in the 4th desulfurizing tower; Accompanying drawing 6 is structural representations of droplet cylinder 24 in the accompanying drawing 5.
The specific embodiment
The contrast accompanying drawing further specifies the present invention.
The of the present invention pair of efficient denitrating flue gas desulfurization and dedusting of eddy current cleaning device; Comprise four desulfurizing towers, four desulfurizing towers are positioned at same plane, rectangular distribution; Workbench 5 is set between each desulfurizing tower; First desulfurizing tower 1 is connected with depositing reservoir 6 through first pipeline 13, and second desulfurizing tower is connected with particulate deposits jar 8 through second pipeline 10, and the 3rd desulfurizing tower 3 is connected with second pipeline 10; The 4th desulfurizing tower 4 is connected with first pipeline 13, first desulfurizing tower 1, second desulfurizing tower 2, the 3rd desulfurizing tower 3 and the 4th desulfurizing tower 4 through pipeline respectively with absorb flow container 9 and be connected.Each desulfurizing tower through pipeline with absorb the pipeline that flow container 9 is connected on infusion pump is installed respectively, infusion pump is controlled the absorption liquid flow of different desulfurizing towers respectively.
Spin swirler 12 is installed in the 3rd desulfurizing tower 3; Spin swirler 12 has a bowl-shape separation hood 15; This cover is ring bodies, and the upper end is uncovered, a bipyramid particulate is installed on the bowl-shape separation hood 15 is at least removed pipe 17; Sewage draining exit 18 is offered in bowl-shape separation hood 15 bottoms, and the bipyramid particulate is removed the quantity of pipe 17 installations and can be confirmed according to flue gas concentration and flow velocity.Flue gas concentration is higher, when flow velocity is very fast, can be provided with more, otherwise, the bipyramid particulate then can be set less remove pipe 17, make the bipyramid particulate remove pipe 17 and be distributed on the curved surface of bowl-shape separation hood 15.
The preferred scheme that the bipyramid particulate is removed pipe 17 is: it is isometrical pipe 20 that the bipyramid particulate is removed pipe 17 middle and lower parts; The upper end of isometrical pipe 20 joins with the smaller diameter end of big truncated conical pipe 22; The smaller diameter end of the lower end of isometrical pipe 20 and little truncated conical pipe 19 is joined; The length of big truncated conical pipe 22 is greater than the length of little truncated conical pipe 19, and it is best that this scheme is removed the small dust effect.
Certainly, the structure that the bipyramid particulate is removed pipe 17 also can be: the length of big truncated conical pipe 22 and the equal in length of little truncated conical pipe 19, isometrical pipe 20 are positioned at the middle part that the bipyramid particulate is removed pipe 17.
In order further to improve the spin venturi effect, the further scheme that provides is: the angle between the vertical center line of the inwall of big truncated conical pipe 22 and bipyramid particulate removing pipe 17 1Be 8 °-15 °, the angle between the vertical center line of the inwall of little truncated conical pipe 19 and bipyramid particulate removing pipe 17 2It is 6 °-8 °.
In the 4th desulfurizing tower 4 mist separator 11 is installed, mist separator 11 has a droplet cylinder 24, and spin vortex tube 23 is installed in droplet cylinder 24 upper ends; The top of spin vortex tube 23 is smog gas inlet; The inlet diameter of spin vortex tube 23 is greater than outlet diameter, and the port of export of spin vortex tube 23 is connected with spiral tube 29, and the maximum gauge end of spiral tube 29 joins with the port of export of spin vortex tube 23; Through hole is offered in the bottom of droplet cylinder 24, and biconial flue 26 is installed in the through hole.
Spiral tube 29 of the present invention is that maximum gauge, spiral tube 29 dwindle from being changed to evenly of minimum diameter of the port of export of maximum gauge to spiral tube 29 gradually with the port of export joint of spin vortex tube 23; It makes flue gas can further form the eddy current shape and walks downwards, with the grit colony in droplet cylinder 24.
Bottom one side of droplet cylinder 24 according to the invention is installed discharging tube 25, can be in time with accumulating outside the hydrojet expelling tube.
The further scheme of the present invention is: an end of biconial flue 26 is positioned at droplet cylinder 24 inner chambers, and the other end is positioned at outside the droplet cylinder 24.The two ends diameter of biconial flue 26 can make flue gas form in the centre and quicken all greater than diameter between wherein, make small dust further by eddy flow to down.
Depositing reservoir according to the invention 6 tops are connected with the 3rd pipeline 14 1 ends, and the 3rd pipeline 14 other ends are connected with surge tank 7 tops.
The sweetening process of desulfurizer of the present invention is: flue gas gets in first desulfurizing tower 1, after flue gas sprays quinoline through absorption liquid in first desulfurizing tower 1, and the abundant absorbing contacting of alkali in the sulfur dioxide of flue gas and the absorption liquid; Get into depositing reservoir 6; Flue gas gets into second desulfurizing tower 2 through first desulfurizing tower 1 spray back, second desulfurizing tower 2 in absorption liquid and flue gas through spray fully contact after, absorption liquid entering particulate deposits jar 8; Flue gas gets into the 3rd desulfurizing tower 3; Owing in the 3rd desulfurizing tower 3 spin swirler 12 has been installed, flue gas is removed the little truncated conical pipe 19 of pipe 17 from the bipyramid particulate bottom gets into fine particle and SO 3And SO in a small amount 2Fog in the bipyramid particulate is removed pipe 17, quicken isometrical pipe 20 and big truncated conical pipe is condensed, adiabatic expansion and supersaturation concentration process through too small truncated conical pipe reducing; Particle cluster strengthens, and rises to the bipyramid particulate and removes pipe 17 upper ends, the atomized liquid interception of the high speed that is sprayed in shower nozzle rotation; Fall on the inwall of bowl-shape separation hood 15; Get into particulate deposits jar 8 through the sewage draining exit on it 18, get into the mist separator 11 in the 4th desulfurizing tower 4 at last, spin vortex tube of installing on the mist separator 11 23 and spiral tube 29 can make the flue gas that gets in the spin vortex tube 23 spiral at a high speed and descend; Fine-grained particles in the flue gas is brought in the droplet cylinder 24; The water droplet colony is discharged through outage to droplet cylinder 24 bottoms, and flue gas gets into the set flue through biconial flue 26; The flue gas of this moment has been a cleaning flue gases, and cleaning flue gases enters atmosphere through exhaust opening.16 is coatings among the figure, the 21st, and the straight plate retaining of ring-type cover, the 27th, bend pipe, the 28th, set chimney, the 30th, mud outward transport car, 31 first infusion pumps, 32 second infusion pumps, 33 the 3rd infusion pumps, 34 the 4th infusion pumps.

Claims (10)

1. the efficient denitrating flue gas desulfurization and dedusting of two eddy current cleaning device; It is characterized in that: comprise four desulfurizing towers; Four desulfurizing towers are positioned at same plane; Rectangular distribution is provided with workbench (5) between each desulfurizing tower, first desulfurizing tower (1) is connected with depositing reservoir (6) through first pipeline (13); Second desulfurizing tower (2) is connected with particulate deposits jar (8) through second pipeline (10); The 3rd desulfurizing tower (3) is connected with second pipeline (10), and the 4th desulfurizing tower (4) is connected with first pipeline (13), and first desulfurizing tower (1), second desulfurizing tower (2), the 3rd desulfurizing tower (3) and the 4th desulfurizing tower (4) are connected with absorption flow container (9) respectively through pipeline.
2. the efficient denitrating flue gas desulfurization and dedusting of pair eddy current according to claim 1 cleaning device; It is characterized in that: spin swirler (12) is installed in the 3rd desulfurizing tower (3); Spin swirler (12) has a bowl-shape separation hood (15); A bipyramid particulate is installed on the bowl-shape separation hood (15) is at least removed pipe (17), sewage draining exit (18) is offered in bowl-shape separation hood (15) bottom.
3. the efficient denitrating flue gas desulfurization and dedusting of pair eddy current according to claim 2 cleaning device; It is characterized in that: it is isometrical pipe (20) that the bipyramid particulate is removed pipe (17) middle and lower part; The upper end of isometrical pipe (20) joins with the smaller diameter end of big truncated conical pipe (22); The smaller diameter end of the lower end of isometrical pipe (20) and little truncated conical pipe (19) is joined, and the length of big truncated conical pipe (22) is greater than the length of little truncated conical pipe (19).
4. the efficient denitrating flue gas desulfurization and dedusting of pair eddy current according to claim 3 cleaning device is characterized in that: the length of big truncated conical pipe (22) and the equal in length of little truncated conical pipe (19), isometrical pipe (20) are positioned at the middle part that the bipyramid particulate is removed pipe (17).
5. the efficient denitrating flue gas desulfurization and dedusting of pair eddy current according to claim 3 cleaning device is characterized in that: the inwall of big truncated conical pipe (22) and bipyramid particulate are removed the angle between the vertical center line of managing (17) 1Be 8 °-15 °, the inwall of little truncated conical pipe (19) and bipyramid particulate are removed the angle between the vertical center line of managing (17) 2It is 6 °-8 °.
6. according to claim 1 and 2 pair of eddy current denitrating flue gas desulfurization and dedusting cleaning device; It is characterized in that: mist separator (11) is installed in the 4th desulfurizing tower (4); Mist separator (11) has a droplet cylinder (24); Spin vortex tube (23) is installed in droplet cylinder (24) upper end, and the top of spin vortex tube (23) is smog gas inlet, and the inlet diameter of spin vortex tube (23) is greater than outlet diameter; The port of export of spin vortex tube (23) is connected with spiral tube (29); The maximum gauge end of spiral tube (29) joins with the port of export of spin vortex tube (23), and through hole is offered in the bottom of droplet cylinder (24), and biconial flue (26) is installed in the through hole.
7. the efficient denitrating flue gas desulfurization and dedusting of pair eddy current according to claim 6 cleaning device is characterized in that: spiral tube (29) is that maximum gauge, spiral tube (29) dwindle from being changed to evenly of minimum diameter of the port of export of maximum gauge to spiral tube (29) gradually with the port of export joint of spin vortex tube (23).
8. the efficient denitrating flue gas desulfurization and dedusting of pair eddy current according to claim 6 cleaning device is characterized in that: bottom one side of droplet cylinder (24) is installed discharging tube (25).
9. the efficient denitrating flue gas desulfurization and dedusting of pair eddy current according to claim 6 cleaning device is characterized in that: an end of biconial flue (26) is positioned at droplet cylinder (24) inner chamber, and the other end is positioned at outside the droplet cylinder (24).
10. the efficient denitrating flue gas desulfurization and dedusting of pair eddy current according to claim 1 cleaning device is characterized in that: depositing reservoir (6) top is connected with the 3rd pipeline (14) one ends, and the 3rd pipeline (14) other end is connected with surge tank (7) top.
CN2012102207572A 2012-06-29 2012-06-29 Double-vortex high-efficiency flue gas denitration desulphurization dedusting cleaning device Pending CN102728201A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111068481A (en) * 2020-02-15 2020-04-28 丁昌林 Denitration and desulfurization device for industrial boiler

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Publication number Priority date Publication date Assignee Title
EP0509521B1 (en) * 1991-04-19 1995-03-08 Outokumpu Research Oy Multigas scrubber
CN202620961U (en) * 2012-05-15 2012-12-26 李伟东 Double-eddy efficient flue gas desulfurization dust-removing cleaning device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509521B1 (en) * 1991-04-19 1995-03-08 Outokumpu Research Oy Multigas scrubber
CN202620961U (en) * 2012-05-15 2012-12-26 李伟东 Double-eddy efficient flue gas desulfurization dust-removing cleaning device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111068481A (en) * 2020-02-15 2020-04-28 丁昌林 Denitration and desulfurization device for industrial boiler

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Application publication date: 20121017