CN201249099Y - Water film dust removing device with desulfurizing function - Google Patents
Water film dust removing device with desulfurizing function Download PDFInfo
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- CN201249099Y CN201249099Y CNU2008200906158U CN200820090615U CN201249099Y CN 201249099 Y CN201249099 Y CN 201249099Y CN U2008200906158 U CNU2008200906158 U CN U2008200906158U CN 200820090615 U CN200820090615 U CN 200820090615U CN 201249099 Y CN201249099 Y CN 201249099Y
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Abstract
The utility model aims at providing a water film dust removing device with desulfurizing function, which has little occupied space, investment saving, stable operation, low operation cost and small maintenance working capacity, and is particularly suitable for an existing coal-burning boiler of a water film dust removing device to desulfurize, dedust and reform smoke gas. The water film dust removing device with desulfurizing function comprises a granite centrifugal venturi, a granite centrifugal tower main body, a granite centrifugal auxiliary tower, a sewage water cleaning and circulatory system and a temperature control system, which is a smoke gas dedusting and desulfurization technique which integrates dedusting, desulfurization and demisting into one body and developed on the basis of an existing granite centrifugal water film dust removing device. And the water film dust removing device with desulfurizing function is provided aiming at an existing granite centrifugal water film dust removing device which has the problems of low dedusting efficiency, big smoke gas moisture content, water existing in smoke gas, low and unstable desulfurization efficiency and the like.
Description
(1) technical field
The utility model relates to the industrial dedusting technology, is exactly a kind of water film dust removal device with desulfurizing function specifically.
(2) background technology
In some Pump for Medium and Small Power Generating Set of China, as steam power plant's unit boiler of the following capacity of 100MW, venturi water film deduster is still a kind of cleaner of practicality at present, uses very extensive.According to early stage power department statistics, venturi water film deduster has just accounted for about 50% of the total tricks of deduster and total smoke treatment amount.Thermoelectric enterprise outside many power systems substantially all adopts this deduster.Along with country has announced stricter thermal power plant atmosphere pollutants emission standards (GB13223-2003), require the newly-built and new transformation power plant inside and outside the above town planning area in county, the highest permission concentration of emission of smoke dust discharge concentration is 200mg/m
3And 500mg/m
3, the highest permission concentration of emission of sulfur dioxide is 400mg/m
3By 2010, the smoke dust discharge concentration requirement meeting of the concentration of emission of high permission was higher.Generally speaking, the deduster efficiency of dust collection that is used for coal-powder boiler must reach more than 99%, and desulfuration efficiency must be more than 70%～90%.At present, the domestic venturi water film deduster ubiquity efficiency of dust collection that is used for pulverized-coal fired boiler and CFBB is not high, about about 96%; Flue gas is through moisture percentage height behind the venturi water film deduster, causes air-introduced machine vibration, chimney, boiler flue corrosion, desulfuration efficiency is low and unstable, can't satisfy new environmental requirement.For the dust pelletizing system of electrostatic precipitator and sack cleaner, the desulfurization of domestic unit boiler is to separate to build with the dedusting majority, and the sulfur removal technology floor space is big like this, and investment is many, system complex.And venturi water film deduster had both had high flue dust efficiency of dust collection, had high pernicious gas (sulfur dioxide) purification efficiency again.Dried, wet method two big classes that domestic boiler flue gas desulfurization has, the wet desulphurization effect is better than dry method, and therefore, the Pump for Medium and Small Power Generating Set boiler flue gas desulfurization is on the high side with wet method.According to the actual conditions of China, the Pump for Medium and Small Power Generating Set boiler flue gas desulfurization separates construction with dedusting, and enterprise generally feels to invest too high and is difficult to accept.
(3) summary of the invention
The purpose of this utility model be to provide a kind of occupation of land less, reduced investment, stable, operating cost is low, maintenance workload is little, is particularly suitable for the water film dust removal device with desulfurizing function of the coal burning flue gas desulfurization dedust innovation of existing water dust scrubber.
The purpose of this utility model is achieved in that it is made up of numb stone venturi 1, pocked stone pagoda main body 2, numb stone secondary tower 7, the sewage purification circulatory system 26 and temperature control system 27.Fiber crops stone venturi 1 connects pocked stone pagoda main body 2, and pocked stone pagoda main body 2 connects numb stone secondary tower 7, and the sewage purification circulatory system 26 connects pocked stone pagoda main body 2, and temperature control system 27 is arranged on the bottom of numb stone secondary tower 7.
The utlity model has following technical characterictic:
(1) described numb stone venturi 1 comprises contraction section 15, aditus laryngis 19, diffuser 20 and water inlet pipe 17, the tapered nozzle 18 of atomizing.Contraction section 15 connects aditus laryngis 19, and aditus laryngis 19 connects diffuser 20.Water inlet pipe 17, the tapered nozzle 18 of atomizing are arranged on the junction of contraction section 15 and aditus laryngis 19.
(2) described pocked stone pagoda main body 2 comprises diversion column core tower 3, eddy flow plate 4, evenly sprays distribution plate 5, honeycomb demister 6, retaining buck guiding gutter 21 and moisture film 22.Retaining buck guiding gutter 21 and moisture film 22 are arranged on venturi 1 exit of diversion column core tower 3 bottoms, eddy flow plate 4, evenly spray middle part and the top that distribution plate 5 lays respectively at diversion column core tower 3, and the topmost of diversion column core tower 3 is honeycomb demisters 6.
(3) described honeycomb demister 6 is arranged on pocked stone pagoda main body 2 epimeres, and the corrugated plating of honeycomb demister 6 23 is arranged in parallel by certain distance, forms honeycomb demist passage 25, in the bottom of honeycomb demister 6 washer jet 24 is set.
(4) the described sewage purification circulatory system 26 comprises mortar pumping plant 8, concentration basin 9, fossil ashpit 10, circulation pumping plant 11, circulating pump 12.Mortar pumping plant 8 connects concentration basin 9, and concentration basin 9 connects fossil ashpit 10, and fossil ashpit 10 connects circulation pumping plant 11, and circulation pumping plant 11 connects circulating pump 12.
(5) described temperature control system 27 is made up of thermocouple 14 and circulating water flow meter 13.Thermocouple 14 is installed in the exit of secondary tower 7, and circulating water flow meter 13 is connected with circulating pump 12.
A kind of water film dust removal device of the utility model with desulfurizing function, on the basis of existing venturi water film deduster, researched and developed the flue-gas dust-removing and desulfurization technology of melting dedusting, desulfurization, demist one, efficiency of dust collection at traditional venturi water film deduster is not high, humidity of flue gas is big, flue gas with water, desulfuration efficiency is low and problem such as instability, a kind of water film dust removal device with flue gas desulfurization and dedusting function of proposition.The eddy flow plate that this device is taked to increase the tapered nozzle of high-efficient atomizing, anti-gray water-drop sputtering guiding gutter, enhancing swirl strength at venturi aditus laryngis position improves efficiency of dust collection.The honeycomb demister reduces the flue gas moisture percentage, prevents flue gas with water, alleviates the corrosion of flue and air-introduced machine.In addition, lime stone water desulphurization system is in order to improve desulfuration efficiency.
(4) description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model;
Fig. 2 is numb stone Venturi tube structure schematic diagram;
Fig. 3 is a honeycomb demister schematic diagram.
(5) specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1, in conjunction with Fig. 1, Fig. 2, the flue gas more than 130 ℃ of being discharged by air preheater enters numb stone venturi (1), fiber crops stone venturi (1) downward-sloping approximately about 3 °～5 °, the velocity of flue gas that enters numb stone venturi (1) is 15～22m/s, flue gas quickens gradually at contraction section (15), it is the highest that arrival aditus laryngis (19) is located flow velocity, be about about 70m/s, and clash into mutually with the preceding water droplet that sprays into of nozzle (18), these water droplets that spray into are atomized (or pulverizing) and become the thinner droplet of a large amount of diameters under the bump of high speed flue gas.Simultaneously, flue gas is fully by water saturation, and the air film of dust particle surface attachment is broken through, and makes dust particle moistening by water.Therefore fierce collision, cohesion take place between dust particle and droplet or dust particle.After entering diffuser (20), reduction along with flue gas flow rate, static pressure obtains certain rise, make this with the dust particle be the coacervation of condensation nucleus take place faster, just bulky grain occurs and capture granule, granule is hung on oarse-grained coacervation, is condensed into the dust-laden drop of greater particle size at last.
Embodiment 2, in conjunction with Fig. 1, near venturi water film deduster diffuser (20) outlet top 300～400mm, layout design the retaining buck guiding gutter (21) of certain altitude, the buck that moisture film is flowed downward is diverted to the both sides of import, thereby avoid disturbance to import flue gas stream, can prevent effectively that like this ash fines water droplet in the regional moisture film of this section (22) from splashing out from moisture film, taken out of pocked stone pagoda main body (2) by spiralling flue gas stream, alleviate flue gas with water, threaten the safe operation and the corrosion chimney of air-introduced machine.As shown in Figure 1, flue dust sprays from numb stone venturi (1), tangentially enter pocked stone pagoda main body (2), diversion column core tower (3), rely on the big or small grey water droplet after action of centrifugal force will be condensed to get rid of, and taken away by pocked stone pagoda main body inner wall moisture film (22) to pocked stone pagoda main body (2) inwall.Because the air-flow of cyclone centrifugal separation in pocked stone pagoda main body (2) centre is vulnerable to the swabbing action of air-introduced machine, produce in " poor efficiency district ", so in pocked stone pagoda main body (2) centre layout design diversion column core tower (3), its diameter is 0.35～0.45 times of pocked stone pagoda main body (2) diameter, in pocked stone pagoda main body (2) about the about 3.5m/s of flue dust flow velocity.As shown in Figure 1, when rotation rose to certain altitude in the flue dust pocked stone pagoda main body (2), its swirl strength reduced, and centrifugation weakens, at this area arrangements design eddy flow plate (4), eddy flow plate (4) becomes certain included angle with horizontal plane, and eddy flow plate (4) has certain percent opening, behind the rotation ascending air process eddy flow plate (4) that weakens in the flue dust pocked stone pagoda main body (2), the swirl strength of flue dust air-flow improves, and centrifugation strengthens, and has improved desulfurization dust-removing efficiency.Evenly spray distribution plate (5) can be evenly distributed in water on the eddy flow plate (4), forms the moisture film of continous-stable simultaneously at pocked stone pagoda main body (2) inwall.
Embodiment 3, in conjunction with Fig. 1, Fig. 3, at pocked stone pagoda main body (2) epimere layout design honeycomb demister (6), honeycomb demister (6) is arranged in parallel by certain distance by corrugated plating (23), the demist space keeps certain height, when also the higher flue gas of moisture vapor droplet is flowed through honeycomb demist passage (25) through purification, flue gas constantly changes direction according to the shape of corrugated plating and flows, because flue gas is different with the inertia force of water vapour droplet, water vapour droplet in the flue gas is separated from flue gas, fly on the corrugated plating, a large amount of water vapour droplet coalescences form big water droplet, flow out demister.In honeycomb demister layout design washer jet (24).Flue gas is through behind the honeycomb demister, and the moisture percentage of flue gas is below 1%, circulating resistance 30～50Pa.
Embodiment 4, in conjunction with Fig. 1, arrange installation thermocouple (14) in the exit of secondary tower (7), be used to measure the temperature that purifies flue gas, when the boiler load step-down, the temperature that purifies flue gas can reduce, when the temperature that purifies flue gas is lower than 55～60 ℃, the easy dewfall of flue gas, to air-introduced machine and boiler flue corrosion aggravation, purify flue gas near dew-point temperature, should suitably reduce the injection flow rate of numb stone venturi (1) and pocked stone pagoda main body (2), improve the temperature that purifies flue gas.Circulating water flow meter (13) is used to measure circulating water flow, by data accumulation, gropes the relation of a cover venturi water film deduster injection flow rate and boiler load (or purification smoke temperature).
A kind of water film dust removal device of the utility model with flue gas desulfurization function, its desulfuration efficiency can reach more than 70%～90%, and efficiency of dust collection is more than 99%, and the moisture percentage that purifies flue gas is less than 1%.
Claims (6)
1. water film dust removal device with desulfurizing function, it is made up of numb stone venturi (1), pocked stone pagoda main body (2), numb stone secondary tower (7), the sewage purification circulatory system (26) and temperature control system (27); It is characterized in that: numb stone venturi (1) connects pocked stone pagoda main body (2), and pocked stone pagoda main body (2) connects numb stone secondary tower (7), and the sewage purification circulatory system (26) connects pocked stone pagoda main body (2), and temperature control system (27) is arranged on the bottom of numb stone secondary tower (7).
2. a kind of water film dust removal device with desulfurizing function according to claim 1, described numb stone venturi (1) comprise contraction section (15), aditus laryngis (19), diffuser (20) and water inlet pipe (17), tapered nozzle (18) atomizes; It is characterized in that: contraction section (15) connects aditus laryngis (19), and aditus laryngis (19) connects diffuser (20); Water inlet pipe (17), the tapered nozzle (18) that atomizes are arranged on the junction of contraction section (15) and aditus laryngis (19).
3. a kind of water film dust removal device with desulfurizing function according to claim 1, described pocked stone pagoda main body (2) comprise diversion column core tower (3), eddy flow plate (4), evenly spray distribution plate (5), honeycomb demister (6), retaining buck guiding gutter (21) and moisture film (22); It is characterized in that: retaining buck guiding gutter (21) and moisture film (22) are arranged on numb stone venturi (1) exit of diversion column core tower (3) bottom, eddy flow plate (4), evenly spray middle part and the top that distribution plate (5) lays respectively at diversion column core tower (3), the topmost of diversion column core tower (3) is honeycomb demister (6).
4. a kind of water film dust removal device according to claim 3 with desulfurizing function, it is characterized in that: described honeycomb demister (6) is arranged on pocked stone pagoda main body (2) epimere, the corrugated plating (23) of honeycomb demister (6) is arranged in parallel by certain distance, form honeycomb demist passage (25), washer jet (24) is set in the bottom of honeycomb demister (6).
5. a kind of water film dust removal device with desulfurizing function according to claim 1, the described sewage purification circulatory system (26) comprise mortar pumping plant (8), concentration basin (9), fossil ashpit (10), circulation pumping plant (11), circulating pump (12); It is characterized in that: mortar pumping plant (8) connects concentration basin (9), and concentration basin (9) connects fossil ashpit (10), and fossil ashpit (10) connects circulation pumping plant (11), and circulation pumping plant (11) connects circulating pump (12).
6. a kind of water film dust removal device according to claim 1 with desulfurizing function, described temperature control system (27) is made up of thermocouple (14) and circulating water flow meter (13); It is characterized in that: thermocouple (14) is installed in the exit of secondary tower (7), and circulating water flow meter (13) is connected with circulating pump (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200906158U CN201249099Y (en) | 2008-08-08 | 2008-08-08 | Water film dust removing device with desulfurizing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200906158U CN201249099Y (en) | 2008-08-08 | 2008-08-08 | Water film dust removing device with desulfurizing function |
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| Publication Number | Publication Date |
|---|---|
| CN201249099Y true CN201249099Y (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200906158U Expired - Fee Related CN201249099Y (en) | 2008-08-08 | 2008-08-08 | Water film dust removing device with desulfurizing function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102743965A (en) * | 2012-06-15 | 2012-10-24 | 无锡翱翔环保机械有限公司 | Direction-changing Venturi tube used for desulfurization system |
| CN106669347A (en) * | 2017-01-22 | 2017-05-17 | 河南心连心化肥有限公司 | Labyrinth type cyclone dedusting device and dedusting method |
| CN106731610A (en) * | 2017-01-10 | 2017-05-31 | 兰州兰石重工有限公司 | Venturi reactor type clarifying smoke system |
-
2008
- 2008-08-08 CN CNU2008200906158U patent/CN201249099Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102743965A (en) * | 2012-06-15 | 2012-10-24 | 无锡翱翔环保机械有限公司 | Direction-changing Venturi tube used for desulfurization system |
| CN106731610A (en) * | 2017-01-10 | 2017-05-31 | 兰州兰石重工有限公司 | Venturi reactor type clarifying smoke system |
| CN106731610B (en) * | 2017-01-10 | 2023-10-24 | 兰州兰石重工有限公司 | Venturi reactor type smoke dust purifying system |
| CN106669347A (en) * | 2017-01-22 | 2017-05-17 | 河南心连心化肥有限公司 | Labyrinth type cyclone dedusting device and dedusting method |
| CN106669347B (en) * | 2017-01-22 | 2022-08-12 | 河南心连心化学工业集团股份有限公司 | Labyrinth type cyclone dust removal device and dust removal method |
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| Date | Code | Title | Description |
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| 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: 20090603 Termination date: 20130808 |