CN201427013Y - Two-stage water bath type dust remover - Google Patents
Two-stage water bath type dust remover Download PDFInfo
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- CN201427013Y CN201427013Y CN2009200034623U CN200920003462U CN201427013Y CN 201427013 Y CN201427013 Y CN 201427013Y CN 2009200034623 U CN2009200034623 U CN 2009200034623U CN 200920003462 U CN200920003462 U CN 200920003462U CN 201427013 Y CN201427013 Y CN 201427013Y
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- water
- water bath
- dust
- bath layer
- layer
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000000428 dust Substances 0.000 title claims abstract description 43
- 239000007789 gas Substances 0.000 abstract description 20
- 239000002245 particle Substances 0.000 abstract description 19
- 239000007787 solid Substances 0.000 abstract description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 13
- 239000003546 flue gas Substances 0.000 abstract description 13
- 239000000779 smoke Substances 0.000 abstract description 11
- 238000010304 firing Methods 0.000 abstract description 10
- 239000002956 ash Substances 0.000 abstract 2
- 238000011010 flushing procedure Methods 0.000 abstract 2
- 239000010881 fly ash Substances 0.000 abstract 1
- 239000010438 granite Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 239000013618 particulate matter Substances 0.000 description 17
- 230000010148 water-pollination Effects 0.000 description 16
- 238000004062 sedimentation Methods 0.000 description 15
- 239000003500 flue dust Substances 0.000 description 11
- 238000001914 filtration Methods 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 239000000470 constituent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000003260 anti-sepsis Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
A two-stage water bath type dust remover, which belongs to the technical field of water bath type dust removers. Arranging a high water bath layer and a low water bath layer in a square box with a conical bottom surface, and enabling dust-containing flue gas to sequentially pass through a primary water bath layer and a secondary water bath layer; the dedusting water flows through the second-stage water bath layer and the first-stage water bath layer in sequence. The second-stage water bath layer is provided with an underwater pore plate, each stage of water bath layer is provided with a corresponding overflow tank and an ash flushing water drain pipe, small-particle-size inhalable solid particles with poor hydrophilicity captured by the dedusting water are discharged from the overflow tanks step by step, and large-particle-size fly ash solid particles with strong hydrophilicity captured by the dedusting water are discharged from the ash flushing water drain pipes step by step. The dust removal device is used for removing dust from smoke of a vertical fixed grate firing boiler and a semi-gas furnace, and removing small-particle-size smoke which cannot be removed by a granite water film dust remover and conductive smoke which cannot be removed by an electric dust remover.
Description
Affiliated skill wood field
The utility model is a kind of fume dust remover that is specifically applied to vertical fixed grate grate firing boiler and semi-gas furnace.
Background technology
At present, in boiler smoke wet dedusting mode, gallet water curtain dust collector is widely used, and its dust-cleaning principle is: ash-laden gas rushes at the water surface (or moisture film) under inertia force or action of centrifugal force, and the flying dust solid particulate matter in the flue gas soaks into sedimentation because of suction after being thrown toward the water surface.But the minimum grain size of gallet water curtain dust collector capture dust is 5 μ m, and efficiency of dust collection reaches 80-90%.(various deduster dust removal performances see the following form):
Various deduster dust removal performance tables 1.
| The deduster pattern | Effectively capture particle diameter (μ m) | Efficiency of dust collection (%) |
| Gravitational settling formula deduster | ＞50 | 50-60 |
| Cyclone dust collector | ＞10 | 80-90 |
| Gallet water curtain dust collector | ＞5 | 80-90 |
| Electric cleaner | 0.01-100 | 95-99 |
Gallet water curtain dust collector all is suitable for for coal-powder boiler, chain furnace and coal water slurry boiler, because these a few class boiler furnace volumes are big, burner hearth smoke power performance is good, fugitive constituent and Air mixing are full and uniform, burning thoroughly, the flue dust composition is the strong big particle diameter flying dust solid particulate matter of hydrophily, and this flue dust is very easily got rid of to the water surface and suction infiltration sedimentation rapidly by inertia force.
But, when gallet water curtain dust collector is used for vertical fixed grate grate firing boiler or semi-gas furnace, then can't reach good dust removing effects.This is that combustion chamber volume is little because of the fuel bed thickness of vertical fixed grate grate firing boiler and semi-gas furnace, burner hearth smoke power poor performance, and fugitive constituent can form the effect of squeezing to air in the coal in separating out the process of gasification.Owing to be subjected to the restriction of combustion chamber volume and smoke power performance, fugitive constituent gas is very short in the time of staying of combustion chamber, even if under the prerequisite of total air surplus, fugitive constituent still is difficult to carry out fully, mix uniformly with air at short notice, and reaches completing combustion.Because mainly being macromolecule, the fugitive constituent of coal weighs hydrocarbon, the burning oxygen demand of heavy hydrocarbon is big, the combustion space large-scale combustion time that needs is long, so under the anoxycausis state that can't thoroughly eliminate because of type of furnace restriction, the heavy hydrocarbon major part that volatilizes in the coal is reduced into superfine little carbon granule and forms tangible black smoke.
This carbon granule is exactly a carbon black, and diameter is generally less than 1 μ m, and it is far to float in air, and genus can suck solid particulate matter.Therefore, different with coal-powder boiler, chain furnace and coal water slurry boiler is: for vertical fixed grate grate firing boiler and semi-gas furnace, the flue dust composition no longer is the strong big particle diameter flying dust solid particulate matter of hydrophily, but can suck solid particulate matter based on the small particle diameter of the hydrophily extreme difference of carbon black.This soot dust granule quality is minimum, can't be got rid of to the water surface by inertia force in gallet water curtain dust collector; The hydrophily extreme difference can't be by the water infiltration sedimentation.Simultaneously, because carbon black is a kind of conductor, it is littler than the resistance newspaper, even if effectively capture the electric cleaner that particle diameter can reach 0.01 μ m, this class flue dust of vertical fixed grate grate firing boiler and semi-gas furnace also has dust removing effects hardly.
Summary of the invention
In order to solve gallet water curtain dust collector and electric cleaner in the deficiency that is applied to aspect vertical fixed grate grate firing boiler and the semi-gas furnace flue gas ash removal, the utility model provides a kind of a kind of secondary water-bath type dust cleaner that is directed to vertical fixed grate grate firing boiler and semi-gas furnace flue dust characteristics specially, this deduster can not only be caught the strong big particle diameter flying dust solid particulate matter of hydrophily, and the small particle diameter that can catch the hydrophily extreme difference can suck solid particulate matter, has good desulfidation simultaneously.
The technical scheme that the utility model technical solution problem is adopted is: have in the square chest of taper bottom surface one one high and one low two water-bath layers are set, every grade of water-bath layer all is provided with corresponding spilling water groove and towards grey adjutage.Ash-laden gas feeds in the one-level water-bath layer after the flue gas shunting pipe divides stream thinning, in the process that flue gas floats from water with the form of minute bubbles, flue dust carries out direct fully the contact with water, the big particle diameter flying dust solid particulate matter that hydrophily is strong in the flue dust is (for vertical fixed grate grate firing boiler and semi-gas furnace, this class smoke content is seldom) after soaking into sedimentation, discharge towards grey adjutage from one-level water-bath layer; And for can not being sucked solid particulate matter (for vertical fixed grate grate firing boiler and semi-gas furnace with carbon black by the superfine particle diameter of water infiltration and sedimentation in the short time for upright master's hydrophily extreme difference, this class smoke content is very big), then can be adsorbed and float on the water surface of one-level water-bath layer by the surface tension of water, surperficial overflow along with dedusting water, in time drain in the one-level spilling water groove, and drain into low level sedimentation and filtration water tank along the dedusting water return main who links to each other with one-level spilling water groove by the one-level water-bath layer water surface.The total return pipe of dedusting water directly inserts below the low level sedimentation and filtration water tank water surface, has guaranteed the integral sealing effect of deduster.
Feed once more in the secondary water-bath layer along pre-routing through the flue gas after the washing of one-level water-bath layer, the orifice plate that is arranged in the secondary water-bath layer can promote collapse of bubbles and reorganization, flow to the purification exhanst gas outlet after carrying out washing Ji for the second time more completely.Sedimentation or that suspended in water flue dust in the layer of secondary water Lip river enters in the layer of one-level water Lip river by secondary water Lip river layer water conservancy diversion adjutage; The flue dust that floats on the secondary water Lip river layer water surface is along with the surperficial overflow of dedusting water in time enters secondary spilling water groove, and enters in the one-level water-bath layer along secondary spilling water groove mozzle.Secondary water-bath layer mozzle and secondary spilling water groove mozzle all directly are inserted into below the one-level water-bath layer water surface, have guaranteed sealing effectiveness and normal flue gas flow between one, the two two-stage water-bath chambers.
The beneficial effects of the utility model are: not only can catch the strong big particle diameter flying dust solid particulate matter of hydrophily, and the small particle diameter that can catch the hydrophily extreme difference can suck solid particulate matter; Can catch the electric conductivity flue dust that electric cleaner can't be caught, the thorough dust discharge of dedusting is timely, and the secondary that does not produce flue dust carries.Has desulfidation simultaneously.
Description of drawings
Be in conjunction with the accompanying drawings and embodiments the utility model to be further specified below.
Fig. 1 is the outline drawing of the utility model embodiment.
Fig. 2 is the utility model embodiment cut-away view.
Fig. 3 is the profilograph of Fig. 1.
Fig. 4 is the dust pelletizing system figure of the utility model embodiment.
Fig. 5 is a schematic diagram of the present utility model.
Fig. 6 is the utility model embodiment flue gas shunting pipe detail drawing.
Fig. 7 is the utility model embodiment orifice plate detail drawing under water.
Among the figure 1. feed pipes, 2. feed troughs, 3. secondary water-bath floor 4. under water orifice plate 5. secondary overflow grooves 6. secondary water-bath floor rush grey adjutage 7. secondary overflow groove mozzles 8. one-level water-bath floor 9. flue gas shunting pipe 10. one-level overflow grooves 11. one-level water-bath floor and rush secondary water-bath chambers 19., grey adjutage control valve 13. water in dust removal return mains low level sedimentation and filtration water tank 15. low level sedimentation and filtration cistern discharge valves replaceable sliding screen 17. water in dust removal circulating pumps one-level water-bath chambers 18. 16. 14. 12. 20. dust collector box bodies, 21. purifying smokes outlet 22.II section chimney 23. flue damper 24.I section chimneys 25. boiler induced-draft fans
The specific embodiment
In Fig. 5, ash-laden gas is after I section chimney (24) shown in Figure 4, boiler induced-draft fan (25) enter deduster casing (20), divide through the aperture of flue gas shunting pipe (9) bottom at first that stream thinning is laggard goes in the one-level water-bath layer (8), after the low ash-laden gas after the preliminary washing of one-level water-bath floor (8) flows through one-level water-bath chamber (18), be passed into again in the secondary water-bath layer (3), purification flue gas after secondary water-bath floor (3) washs once more flows through secondary water-bath chamber (19), flow to and purify exhanst gas outlet (21), after II section chimney (22) shown in Figure 4 enters atmosphere.
Flue gas flow shows: ash-laden gas is after tentatively washing by one-level water-bath layer (8) earlier, thoroughly to wash by secondary water-bath layer (3) again.
In Fig. 5, clear water after low level sedimentation and filtration water tank (14) is handled, after dedusting water-circulating pump (17) entered deduster casing (20), the tap hole bottom water inlet pipe (1) entered in the feed trough (2), and the mode by overflow flows into secondary water-bath layer (3) again.Water in the secondary water-bath floor (3) is that the branch two-way flows into one-level water-bath floor (8): the one tunnel is that the dedusting water that the small particle diameter of carrying the hydrophily difference can suck solid particulate matter enters one-level water-bath layer (8) along secondary spilling water groove (5), secondary spilling water groove mozzle (7); Another road is that the dedusting water that carries the strong big particle diameter flying dust solid particulate matter of hydrophily enters one-level water-bath floor (8) along secondary water-bath floor towards grey adjutage (6).
Water in the one-level water-bath layer (8) also is that the branch two-way flows into low level sedimentation and filtration water tank (14): the one tunnel is that the dedusting water that the small particle diameter of carrying the hydrophily difference can suck solid particulate matter enters low level sedimentation and filtration water tank (14) along one-level spilling water groove (10), dedusting water return main (13); Another road be carry the dedusting water of the strong big particle diameter flying dust solid particulate matter of hydrophily along one-level water-bath floor towards grey adjutage (11), dedusting water return main (13) enters low level sedimentation and filtration water tank (14).
Dedusting current journey shows: dedusting water is to flow through earlier after secondary water-bath layer (3) thoroughly washs low ash-laden gas, and the one-level of flowing through again water-bath layer (8) tentatively washs high ash-laden gas.In the washing process, the small particle diameter of the hydrophily difference of being caught by dedusting water can suck solid particulate matter and float on the water surface, discharges from the spilling water groove in the mode of surperficial overflow; The big particle diameter flying dust solid particulate matter that the hydrophily of being caught by dedusting water is strong is deposited in water-bath layer bottom or suspends in water, and discharges towards grey adjutage certainly in the mode of bottom blow-down.
Secondary water-bath layer mozzle (6) and secondary spilling water groove mozzle (7) all directly are inserted into below the water surface of one-level water-bath layer (8), have guaranteed sealing effectiveness and normal flue gas flow between one-level water-bath chamber (18) and the secondary water-bath chamber (19).Dedusting water return main (13) directly inserts below the water surface of low level sedimentation and filtration water tank (14), has guaranteed the integral sealing effect of deduster.
Give in the dedusting water to add NaOH, NaOH can generate sodium sulfite with the sulfur in smoke reaction, plays excellent desulfurizing effect; When keeping dedusting water ph value 10-12, the deduster steel had good antisepsis.
List of references
1.: " reason and the control of simple analysis boiler chimney over-emitting black exhaust " author: Zhou Jinbao article numbering: 1001-0335 (2004) 04-0036-03.
Claims (2)
1. secondary water-bath type dust cleaner is characterized in that: have in the square chest of taper bottom surface one one high and one low two water-bath layers are set.
2. secondary water-bath type dust cleaner according to claim 1 is characterized in that: every grade of water-bath layer all is provided with corresponding spilling water groove and towards grey adjutage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200034623U CN201427013Y (en) | 2009-02-15 | 2009-02-15 | Two-stage water bath type dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200034623U CN201427013Y (en) | 2009-02-15 | 2009-02-15 | Two-stage water bath type dust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201427013Y true CN201427013Y (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200034623U Expired - Fee Related CN201427013Y (en) | 2009-02-15 | 2009-02-15 | Two-stage water bath type dust remover |
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| Country | Link |
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| CN (1) | CN201427013Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968228A (en) * | 2010-09-03 | 2011-02-09 | 朱亮 | Smoke elimination chimney |
| CN103736591A (en) * | 2014-01-14 | 2014-04-23 | 南京工业大学 | Low-temperature plasma PM2.5 purification treatment device and treatment method thereof |
-
2009
- 2009-02-15 CN CN2009200034623U patent/CN201427013Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968228A (en) * | 2010-09-03 | 2011-02-09 | 朱亮 | Smoke elimination chimney |
| CN103736591A (en) * | 2014-01-14 | 2014-04-23 | 南京工业大学 | Low-temperature plasma PM2.5 purification treatment device and treatment method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20110215 |