CN1745875A - Assembling device of double-stage wetting dust-proof desulfurizer - Google Patents
Assembling device of double-stage wetting dust-proof desulfurizer Download PDFInfo
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- CN1745875A CN1745875A CN 200510032034 CN200510032034A CN1745875A CN 1745875 A CN1745875 A CN 1745875A CN 200510032034 CN200510032034 CN 200510032034 CN 200510032034 A CN200510032034 A CN 200510032034A CN 1745875 A CN1745875 A CN 1745875A
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Abstract
A combined two-stage wet dusting-desulfurizing apparatus for high-concentration smoke or pollutant (SO2) is composed of two wet dusting-desulfurizing units, that is, stage-one unit with spraying self-energized water bath and stage-two efficient spraying cyclone unit.
Description
One, technical field
Patent of the present invention belongs to the flue-gas dust-removing and desulfurization device of field of environment protection; particularly relate to a kind of composite set with two kinds of wet dust removal desulphurization device series connection all-in-one-piece wet dust removal desulphurization devices; be specially adapted to smoke gas treatments such as powder coal stove, Circulation fluidized-bed furnace, high concentration flue dust and high concentration sulfur dioxide, innovative technology and new product that pollutants such as middle-size and small-size power plant boiler and various kiln and electric arc furnaces flue gas, flue dust, dust, sulfur dioxide are carried out the integrated comprehensive regulation of wet dedusting desulfurization.
Two, background technology
Boiler comprises station boiler, Industrial Boiler and fire coal, combustion gas, oil burning boiler and various fire coal, combustion gas, fuel oil kiln or electric arc furnaces, all give off a large amount of flue gases, flue dust, dust, sulfur dioxide aborning, major polluting atmosphere environment must be administered it.
Along with society and expanding economy, various Industrial Stoves, coal-burning boiler, particularly station boiler, electric arc furnaces is more and more, and along with rise of the oil price, oil oven originally changes coal stove and also becomes trend; Since Circulation fluidized-bed furnace energy burning inferior coal, even gangue, the efficiency of combustion height, but desulfuration in furnace again, so development is very fast, but its flue dust initial concentration is high especially, so burden to atmospheric environment, pollution is on the rise, and the environmental law rule is more and more stricter thereupon, and former discharging flue gas, flue dust, dust and sulfur dioxide are up to standard, by new strictness standard, not up to standard, must administer again, must reach country or local more and more stricter environmental emission standard.So must seek and develop new product and technology, so patented technology of the present invention and product, market is big, prospect is good.
Improvement technology to flue gas, flue dust, dust and sulfur dioxide can be divided into following three classes at present:
One class: big-and-middle-sized power plant boiler flue gas carries out dry method spraying desulfurization or semi-dry desulphurization again and adds bag collection again through dry dust removals such as electrostatic precipitation or bag-type dusts;
Two classes: be that flue gas carries out wet desulphurization again behind dry method dusts such as electrostatic precipitation or bag-type dust.This method is more general.
Three classes: middle-size and small-size power plant boiler and middle-size and small-size Industrial Boiler and industrial coal gas fuel kiln, electric arc furnaces flue gas, directly administer by dedusting and desulphurization integrated equipment.Because the dedusting and desulphurization integrated equipment performance that adopts has height, the smoke components of accepting again to administer has very big difference, general grate firing boiler dust contained flue gas concentration 2000mg/m
3About, and the dust contained flue gas concentration 15000～60000mg/m of suspension combustion
3, the content of sulfur in smoke then has height with coal-fired sulfur-bearing height.The general flue gas low to dust content as grate furnace flue gas and the low flue gas of sulfur dioxide concentration, after dedusting and desulphurization integrated equipment is administered, just can reach environmental emission standard.And, after dedusting and desulphurization integrated equipment is administered, do not reach environmental emission standard for dust content height, flue gas that sulfur dioxide concentration is high.
Grandson inventor of patent of the present invention builds the people and Environment College, Nanjing Univ. and unites in March, 2005 and declared patent of invention " a kind of electric arc furnaces dust-remover device ".Patent of the present invention as first order wet dust removal desulphurization device, has only been saved its dehydration cylindrical shell with it.Grandson inventor of patent of the present invention builds the people, successively declared and obtained " circular wet type desulfurizing dust collector water-distributing device " patent right, " circular wet type desulfurizing dust collector dewater unit " patent right and " wet type desulfurizing dust collector drum dewatering secondary tower " patent right at 2002 to 2003, these three utility model patents all are added to the interior second level dust-removing desulfurating apparatus as patent of the present invention of wet spray eddy flow high-effective dust-removing desulfurizer; The rational tandem compound device of this one-level secondary becomes patent of the present invention.Its this composite set patent of invention, one-level must be the self-excitation water-bath type, enter the mouth sprayable humidification or overflow humidification, also humidification not; Ash discharge also the grey ditch-water of awl bucket release towards ash or spiral ash hoist, also can flat water-bath with scraping machine ash discharge or artificial ash discharge; The second level dust-removing desulfurating apparatus of its this composite set patent of invention, also can be the vertical and cylindrical dust-removing desulfurating apparatus that does not contain aforementioned three utility model patents or only contain or two preceding utility model patents or other form, as any eddy flow tower, sieve-plate tower, mixing column.And the double-stage wetting dust-proof desulfurizer of combination.Make the flue gas of the sulfur dioxide of the flue dust dust of high concentration and high concentration, after the double-stage wetting dust desulfurization, reach environmental emission standard comprehensively.
Three, summary of the invention
At various powder coal stoves, the boiler of Circulation fluidized-bed furnace and Boiling Combustion, the flue dust of the high concentration of kiln, the outstanding problem of dust and high concentration sulfur dioxide pollution present situation, the inventor of patent of the present invention sums up the experience of being engaged in prevention and control of air pollution for a long time, fully realize its characteristics of analysis theoretically, the self-excitation water-bath type dust-removing desulfurating apparatus and the wet spray eddy flow high-effective dust-removing desulfurizer of own intellectual property reasonably are connected into a composite set, make its energy two-stage dust removal desulfurization, equipment resistance is little, the air-introduced machine power saving, cycling utilization of wastewater, the size particles flue dust of high concentration and the sulfur dioxide of high concentration are had the high efficiency capture performance of two-stage, and can realize circulation of twin-stage single channel or twin-stage two-way cycling use of water.
Patent of the present invention is achieved in that the flue gas that dust-laden and sulfur dioxide concentration is high introduces the one-level spraying self-excitation water-bath type dust-removing desulfurating apparatus of patent double-stage wetting dust desulfurization composite set of the present invention.This device is a square or cuboid, and top is the headroom, and the bottom is the hydrospace, i.e. " water-bath ", and the water-bath bottom is taper ash bucket or flat ashpit.The inlet of this device is furnished with water spray or overflow device, flue gas is behind humidification, the self-excitation water-bath, water layer band on the lower curved plate is got on, at the violent turbulent flow of the S type throat between the arc up and down, flue dust in the flue gas, dust and desulphurization reaction product capture and dissolve in the water-bath, flow in the circulatory pool or will be concentrated that buck is released or scraped by the scraping machine structure of flat water-bath by the spiral ash hoist by drawing at the bottom of the cone of bottom.Flue gas is entered the second level wet spray eddy flow high-effective dust-removing desulfurizer of this composite set by S type throat underriding tangent line after shrinking water conservancy diversion, flue gas underriding water seal face rises around the rotation of center stem stem, after passing through eddy flow plate deflector and the water distribution of center water-distributing device repeatedly contacting, again through the demist plate and the spiral reverse taper dewater unit on top, from the top center smoke, after underriding gap bridge flue tangent line entered the further dehydration of drum dewatering secondary tower, flue gas was guided to the emptying of flue chimney by air-introduced machine.The buck of this second level dust-removing desulfurating apparatus and desulfurization product flow to sedimentation basin in the lump by the cone ash ditch that etch-proof pipeline (as pvc pipe) is connected to first order self-excitation water-bath, and clear water is recycling after precipitate and separate, and heavy ash is done comprehensive utilization or made landfill.This partial buck, desulfurization product also can be made the independent loops system.
Four, description of drawings
Fig. 1 is the composite set outline drawing of patent double-stage wetting dust-proof desulfurizer of the present invention
Fig. 2 is the composite set structure chart of double-stage wetting dust-proof desulfurizer
Fig. 3 is the I-I cutaway view of Fig. 2
Five, specific embodiments
See Fig. 2: the composite set of one-level spraying self-excitation water-bath type dust-removing desulfurating apparatus and secondary wet spray eddy flow high-effective dust-removing desulfurizer.
Smoke-intake pipe (1) enters casing (2) with ash-laden gas from the top or the side direction of primary dust removing desulfurizer for square or square type, the dust-removal and desulfurizing water-bath water surface with 13～20m/s velocity shock casing Lower Half, the throat (5) that flue gas forms between upper curved plate (3) and lower curved plate (4) with 22～35m/s speed by with the fierce turbulent flow of the self-excitation water smoke carried secretly up, flue dust, dust become trapped in the casing water-bath, sulfur dioxide also under fierce turbulent-flow conditions be pre-applied to caustic soda in the casing water-bath, soda ash or other basic anhydride and flue dust, contained basic anhydride generation neutralization reaction in the dust and removing.Flue gas is being carried water smoke secretly and is being entered second level wet spray eddy flow high-effective dust-removing desulfurizer through casing outlet (6) contraction underriding.Flue gas is when entering primary dust removing desulfurizer casing (2), and the staggered spraying humidification of row's nozzle pipe (8) also can be a spill box in effluxing nozzle pipe (7) and being somebody's turn to do, and the overflow water humidification helps improving dedusting and desulfuration efficiency.Casing (2) bottom is cone water-bath (9), and the dust of capture and desulfurization resultant fall into the grey ditch in bottom (10) and efflux, and water level is controlled to adjust by adjuster (11).In the ash ditch (10), also can adorn spiral ash hoist ash discharge.
It can be unidirectionally to advance the two-way circumferential welds that advance cigarette or 360 any one number of degrees of degree of cigarette and advance cigarette that spraying self-excitation water bath dust-removing desulfurizer advances mouth, different with patent of invention " a kind of electric arc furnaces dust-remover device " is the dewater unit of having cancelled the rear portion, allows flue gas with water to enter second level wet spray eddy flow high-effective dust-removing desulfurizer.
After entering second level dust-removing desulfurating apparatus tower body (12) as Fig. 2 flue gas tangent line, rise around stem stem (13) rotation, the desulfurizing agent dedusting water that distributes through rotation of the water conservancy diversion of 2～4 layers of eddy flow plate (14) and 1～3 layer of deflector (15) and center water-distributing device (16) is to long distance, Long contact time, flue dust is captured, sulfur dioxide is neutralized, flue gas continues rotation and rises, gas-water separation under the guide functions of demist plate (17) and spiral reverse taper (18), and by top center outlet flue (19) and underriding gap bridge flue (20) tangent line enter the dehydration secondary tower (21) dehydration after pipe (22) is connected air-introduced machine, through flue, chimney effluxes.The water seal face of tower body (12) can be higher than the water seal face of casing (2), and the grey ditch (10) of incorporating the tower body buck into one-level self-excitation water bath dust-removing desulfurizer by inclined tube (23) effluxes the circulation of title two-stage single channel.Foregoing inclined tube (23) can be that pvc pipe or stainless steel tube also can be that the granite slab sealing is built by laying bricks or stones.The buck of being discharged by grey ditch (10) carries out Ash Water Separator by being located at extraneous sedimentation basin, and lime-ash is made comprehensive utilization or landfill.Supernatant water is returned the water inlet system systemic circulation of the water-distributing device (16) of primary dust removing desulfurizer and two-stage dust removal and desulfurization device through circulating pump.This locates described water inlet pipe can be stainless steel tube, pvc pipe or PPR pipe, and pipe-line system can the setting pressure meter, thermometer and PH self-con-tained unit etc.Foregoing secondary removes the desulfurization water of dirt devulcanizer device (12), also can independently form the circulatory system.Be that one-level water is done the circulation of dedusting water.Secondary water is made desulfurization water and is circulated separately, claims the circulation of two-stage two-way, and desulfurization product is deepened post processing, and desulfurizing agent (liquid) is then recycling.
The composite set of patent double-stage wetting dust-proof desulfurizer of the present invention, total efficiency of dust collection can reach 98～99.8%, and desulfuration efficiency can reach 90～95%, can be high to the flue dust initial concentration and the smoke gas treatment of sulfur dioxide initial concentration height even extra-high-speed and qualified discharge.Flue gas contains and wet is controlled at 6～7%, and SR 1200～1800Pa does not have specific (special) requirements to the air-introduced machine blast, and power consumption is little, energy-conservation, and compact conformation takes up an area of little.This effect can replace the expensive process route that electrostatic precipitation adds desulfurization.Initial cost is saved more than 50% than electrostatic precipitator or the equipped desulphurization system of sack cleaner, and one-level casing (2) and secondary tower body (12) are the granite material, anticorrosive anti-wear, and long service life, maintenance is few, and operating cost is low.Meet sustainable development spirit.
The composite set material of the two-stage dust removal desulfurizer of patent of the present invention except that granite, also can be that general steel plate pastes the fiberglass scale or adds the plastic-blasting layer or other corrosion and wear coatings, also can be corrosion resistant plate, or both.
The composite set of patent double-stage wetting dust-proof desulfurizer of the present invention is placed on air-introduced machine behind this composite set or all allows before.
Claims (5)
1, a kind of composite set of double-stage wetting dust-proof desulfurizer, the first order connects second level wet spray eddy flow high-effective dust-removing desulfurizer for spraying self-excitation water-bath type dust-removing desulfurating apparatus, its outlet collapsible tube (6) underriding tangent line.To secondary outlet flue (22), process two-stage wet dedusting desulfurization can be to the high concentration flue dust from a progressive mouth (1) for flue gas, and the flue gas high efficiency of dust and high concentration sulfur dioxide is administered.
2, the patent of invention of the composite set of double-stage wetting dust-proof desulfurizer according to claim 1 is characterized in that: patent of invention " a kind of electric arc furnaces dust-remover device " has only been saved the dewater unit at rear portion as first order dust-removing desulfurating apparatus.It can be unidirectional, two-way advancing cigarette or any angle circumferential weld of 360 degree advances cigarette.
3, the patent of invention of the composite set of double-stage wetting dust-proof desulfurizer according to claim 1, it is characterized in that: second level dust-removing desulfurating apparatus can comprise " circular wet type desulfurizing dust collector water-distributing device ", " circular wet type desulfurizing dust collector dewater unit ", " desulfurizing dust-collector drum dewatering secondary tower device " patent, it also can be the other forms of vertical and cylindrical dust-removing desulfurating apparatus that does not contain aforementioned three utility model patents (also can only contain or), as any eddy flow tower, sieve-plate tower, mixing column and the composite set of the double-stage wetting dust-proof desulfurizer that makes up.
4, the patent of invention of the composite set of double-stage wetting dust-proof desulfurizer according to claim 1, a feature is: one-level secondary water can be that a great circulation system claims the circulation of two-stage single channel; Also can be that one-level water is done the circulation of dedusting water, secondary water be made desulfurization water and is done circulation separately, claims the circulation of two-stage two-way.
5, the patent of invention of the group of double-stage wetting dust-proof desulfurizer according to claim 1 and device, it is characterized in that: the material of the composite set of double-stage wetting dust-proof desulfurizer is except that granite, also can be that general steel plate pastes glass flake or adds the plastic-blasting layer or other corrosion and wear coatings, also can be corrosion resistant plate or both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510032034 CN1745875A (en) | 2005-08-18 | 2005-08-18 | Assembling device of double-stage wetting dust-proof desulfurizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510032034 CN1745875A (en) | 2005-08-18 | 2005-08-18 | Assembling device of double-stage wetting dust-proof desulfurizer |
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| CN1745875A true CN1745875A (en) | 2006-03-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221015B (en) * | 2007-09-27 | 2010-06-16 | 中铁宝桥股份有限公司 | Smoke and dust comprehensive processing technique, smoke and dust trapping device and combined dust remover for electric arc furnace |
| CN101986025A (en) * | 2010-10-25 | 2011-03-16 | 广东慧生能源技术有限公司 | Integrated low-carbon micro-discharge energy-saving and emission-reduction boiler system |
| CN101357297B (en) * | 2008-09-18 | 2011-05-25 | 佛山市三水区碧源环保工程有限公司 | Wet desulfurization dust-removing device and processing method thereof |
| CN105148664A (en) * | 2015-08-31 | 2015-12-16 | 太仓英达锅炉设备有限公司 | Boiler flue gas purification device |
| CN109876637A (en) * | 2019-03-18 | 2019-06-14 | 江苏东本环保工程有限公司 | Wet process deacidification system |
-
2005
- 2005-08-18 CN CN 200510032034 patent/CN1745875A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221015B (en) * | 2007-09-27 | 2010-06-16 | 中铁宝桥股份有限公司 | Smoke and dust comprehensive processing technique, smoke and dust trapping device and combined dust remover for electric arc furnace |
| CN101357297B (en) * | 2008-09-18 | 2011-05-25 | 佛山市三水区碧源环保工程有限公司 | Wet desulfurization dust-removing device and processing method thereof |
| CN101986025A (en) * | 2010-10-25 | 2011-03-16 | 广东慧生能源技术有限公司 | Integrated low-carbon micro-discharge energy-saving and emission-reduction boiler system |
| CN105148664A (en) * | 2015-08-31 | 2015-12-16 | 太仓英达锅炉设备有限公司 | Boiler flue gas purification device |
| CN109876637A (en) * | 2019-03-18 | 2019-06-14 | 江苏东本环保工程有限公司 | Wet process deacidification system |
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