CN2721212Y - Apparatus for desulfurizing and dust collecting fluidized gas with different specific weights - Google Patents
Apparatus for desulfurizing and dust collecting fluidized gas with different specific weights Download PDFInfo
- Publication number
- CN2721212Y CN2721212Y CN 200420009309 CN200420009309U CN2721212Y CN 2721212 Y CN2721212 Y CN 2721212Y CN 200420009309 CN200420009309 CN 200420009309 CN 200420009309 U CN200420009309 U CN 200420009309U CN 2721212 Y CN2721212 Y CN 2721212Y
- Authority
- CN
- China
- Prior art keywords
- flue gas
- fluidization
- different proportion
- reaction tower
- desulfurating dust
- Prior art date
Links
- 230000003009 desulfurizing Effects 0.000 title claims abstract description 58
- 239000000428 dust Substances 0.000 title claims abstract description 35
- 239000007789 gases Substances 0.000 title abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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[O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000003546 flue gases Substances 0.000 claims abstract description 45
- 238000006477 desulfuration reactions Methods 0.000 claims abstract description 36
- 238000006243 chemical reactions Methods 0.000 claims abstract description 32
- 239000000945 fillers Substances 0.000 claims abstract description 12
- 239000002002 slurries Substances 0.000 claims description 31
- 238000005243 fluidization Methods 0.000 claims description 24
- 239000007921 sprays Substances 0.000 claims description 17
- 238000004062 sedimentation Methods 0.000 claims description 14
- 239000011901 water Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000000034 methods Methods 0.000 claims description 8
- 239000007787 solids Substances 0.000 claims description 8
- 239000006228 supernatants Substances 0.000 claims description 8
- 281000017212 Film distribution companies 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound 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OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011977 sulfuric acid Substances 0.000 claims description 6
- 235000019738 Limestone Nutrition 0.000 claims description 4
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Abstract
Description
Technical field
The utility model relates to environmental engineering speciality atmosphere polluting controling technology field, and is especially a kind of to SO in the coal-fired flue-gas of severe contamination atmosphere 2With the technology that dust purifies, particularly a kind of different proportion fluidization desulfurating dust removing device for flue gas.
Background technology
The three phase fluidized bed of boiler smoke dedusting at present and desulfurization mainly contains venturi wet type water dust scrubber (see " boiler handbook P522～535. Xi'an Communications University), owing to wash flue gas with clear water, thereby not exclusively possess desulfurizing function; One class is radial air inlet three phase fluidized bed absorption tower (seeing " cleaner design " P345～350), this class absorption tower has higher desulfuration efficiency, but because dedusting function is not strong, therefore then need preposition electric cleaner or cleaner, stop up to prevent the absorption tower for the higher flue gas of dust-laden.Another kind of is radial air inlet three phase fluidized bed combined type desulfurizing tower (" exhuast gas desulfurization " P123～133), although this class device has dedusting and two kinds of functions of desulfurization concurrently, but because after the flue gas of sending here from Venturi tube enters the absorption tower with radial direction, gas directly makes progress, its dust removing effects is not good, easily causes the filling ball wearing and tearing.
Patent " tangential admission dust-removal and desulfurizing three phase fluidized bed " (patent No.: ZL 94208131.5), this three phase fluidized bed has adopted the tangential admission connected mode, but still exists intake resistance bigger, the shortcoming such as wear no resistance of the filling ball in the desulfurization section.Patent " spiral case air inlet dust-removal and desulfurizing three phase fluidized bed " (patent No.: ZL00230000.1) adopt the spiral case intake method, filling ball adopts the solid filling ball of foaming micropore, but the dead band fouling clogging that still can't avoid the tower content to be prone to.
The utility model content
The utility model is at the above-mentioned defective that exists in the prior art; a kind of different proportion fluidization desulfurating dust removing device for flue gas is provided; adopt this device; can realize the interior circulation of filler; avoid the generation of scale formation on interior dead band of tower and the distribution grid; thereby help environmental protection more, further eliminate SO in the coal-fired flue-gas 2With the pollution of dust to atmosphere.
The technical solution of the utility model is as follows:
Different proportion fluidization desulfurating dust removing device for flue gas comprises desulfurization and dedusting reaction tower and the desulfurization slurry treatment system that is connected with this reaction tower pipeline, is provided with packed bed in the described reaction tower, and it is characterized in that: described packed bed is the V-type grid plate structure.
Filler on the described V-type grid plate structure adopts the solid filling ball of different proportion.
Described packed bed bottom is provided with the drop flusher, and packed bed top is provided with spray head and demister.
The inside of described reaction tower is provided with the study of water film distribution device.
The bottom of described reaction tower is provided with the tangential inlet that flue gas enters, and is provided with sprayer in this porch.
Described desulfurization slurry treatment system, comprise sedimentation basin, desulfurization slurry enrichment facility, desulfurizing agent regenerated reactor and nertralizer adding apparatus, between reaction tower and the sedimentation basin, between sedimentation basin and the enrichment facility, between sedimentation basin and the regenerated reactor, adopt anticorrosion pipeline to connect between regenerated reactor and the reaction tower.
Described desulfurizing agent adopts the buck supernatant, utilizes the catalysed oxidn of the ion in the buck supernatant to carry out desulfurization.
Described nertralizer adopts pH value greater than 9 alkaline solution, and this alkaline solution is quick lime and/or white lime and/or lime stone and/or magnesia and/or spent lye.
Described desulfurization slurry enrichment facility is a concentrated sulfuric acid process units.
Flue gas flow rate is 2～6m/s in the described reaction tower.
Technique effect of the present utility model is as follows:
Because different proportion fluidization desulfurating dust removing device for flue gas of the present utility model; packed bed in the desulfurization and dedusting reaction tower is designed to the V-type grid plate structure; make flue gas can promote packing layer during through the V-type screen in uphill process filler bead strenuous exercise up and down; increased disturbance; circulation in forming; avoid the generation of scale formation on interior dead band of tower and the distribution grid, thereby help environmental protection more, further eliminate SO in the coal-fired flue-gas 2With the pollution of dust to atmosphere.
Generally speaking, different proportion fluidization desulfurating dust removing device for flue gas of the present utility model, it is a kind of Wetting flue gas desulfurization technique, it compared with prior art, have many special advantages: (1) is owing to adopt different proportion filler, exhaust gas volumn changes the influence to the filler fluidisation when having avoided owing to the boiler load variation, has increased the contact area of flue gas and liquid simultaneously, has improved reaction efficiency.(2) owing to adopt the V-type screen, make different proportion filling ball can form interior circulation, increased disturbance, avoided screen fouling clogging.(3) adopt the buck supernatant as desulfurizing agent, utilize the catalysed oxidn of the metal ion in the supernatant, make the SO in the flue gas 2Be oxidized to H 2SO 4, along with H 2SO 4The rising of concentration can concentrate and produce the concentrated sulfuric acid or produce flocculant.(4) can adopt lime stone, quick lime or spent lye as nertralizer in He in the regenerated reactor, the PH that keeps desulfurization slurry is 2～5.(5) desulfurizing tower makes efficiency of dust collection up to more than 99% owing to adopt the different weight fluidized structure in liquid film top, bottom, and desulfuration efficiency is higher than 90%.(6) double fluid atomization nozzle of particular design makes mist droplet particle size between 10～30 microns, the shortcoming that has little time to evaporate when avoiding drop excessive.(7) owing to adopt the buck supernatant, reduced operating cost as desulfurizing agent.(8) owing to adopt the technology that precipitates, concentrates and regenerate, system does not have waste water and produces.(9) if the existing water dust scrubber of system can carry out the system reform to it, save cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Reference numeral lists as follows:
1-desulfurization and dedusting reaction tower or different proportion fluidization moisture film tower; The tangential inlet that the 2-flue gas enters; 3-slurry spraying spray gun; 4-slurries spray equipment; 5-V type screen; 6-study of water film distribution device; The 7-packing layer; The 8-spray head; The 9-demister; The 10-sedimentation basin; The 11-regenerated reactor; 12-nertralizer adding apparatus; The 13-liquid-solid separator; 14-desulfurization slurry enrichment facility; The 15-concentrated sulfuric acid.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
This patent is intended to solve investment and the higher problem of operating cost in the present wet desulfurizing process, makes every effort to obtain peak efficiency under lower cost.Avoid system to occur stopping up simultaneously, reduce the generation of waste water, desulfurizing agent can be recycled.The different proportion fluidization of the utility model desulfurating dust removing device for flue gas relates to the prevention and control of air pollution field, is a kind of at SO in coal-burning boiler, the stove tail gas 2The technology of pollution control.The technical conceive of its system is as follows: this device is a main equipment with different proportion fluidization moisture film tower, and the bottom is provided with tangential smoke inlet, and the place is provided with sprayer at smoke inlet, and there are study of water film distribution device and different proportion fluidization packed bed in desulfurizing tower inside.In the packed bed bottom drop flusher is arranged, packed bed top is provided with spray head and demister.The desulfurizing tower outside is provided with sedimentation basin, desulfurizing agent regenerated reactor and enrichment facility.Contain SO 2Tangentially enter desulfurizing tower with the flue gas of dust by the desulfurizing tower bottom, the droplet that sprays with sprayer unit enters reaction tower, through entering the flue emptying behind liquid film, drop flusher, different proportion fluid bed, the demister, desulfurization slurry is after precipitation is removed particle, in regenerated reactor, add nertralizer and catalyst, make desulfurizing agent regeneration.The partial desulfurization slurries are used for concentrating production sulfuric acid.
This patent adopts following technical scheme to realize the purpose of inventing.It sprays in subsystem, demister system, slurries settling system, the desulfurizing agent by different proportion fluidization moisture film desulfurizing tower, atomizer, slurries and regenerative system, slurries concentration systems, air-introduced machine, water pump and control Displaying Meter system form.This device is the center with different proportion fluidization moisture film desulfurizing tower, be provided with tangential smoke inlet in its bottom, be provided with the slurry spraying spray gun in the porch, be provided with slurries spray equipment and study of water film distribution device in the desulfurizing tower bottom, be provided with V-type screen and packing layer at an upper portion thereof, packing layer adopts the solid filler of different proportion, and packing layer top is provided with spray head, spray head top is provided with demister, and the desulfurizing tower outlet is connected with back-end ductwork.The desulfurizing tower bottom is provided with desulfurization slurry outlet, adopts anticorrosion pipeline to be connected between this outlet and the sedimentation basin, sedimentation basin with in link to each other with regenerated reactor and concentration systems.In and regenerated reactor outlet liquid-solid separation device is set.Flue gas is tangentially entered by the desulfurizing tower bottom, this moment, atomizer was with flue gas cool-down and desulphurization reaction takes place, flue gas rotates rising in desulfurizing tower, dust is because the effect of centrifugal force and droplet is caught and is removed by liquid film all around, and flue gas reacts with sprayed slurry in uphill process once more, through the V-type refractory slab, promote filler bead strenuous exercise up and down, removal is caught and is carried secretly in circulation in forming, fine particle by the outer field liquid film of filler, simultaneously the SO of complete reaction not in the flue gas 2React once more.Flue gas flow velocity in tower is 2～6m/s, and desulfurization slurry PH is 2～5.Spray particle diameter is 10～30 microns.
As shown in Figure 1, different proportion fluidization desulfurating dust removing device for flue gas of the present utility model, it is characterized in that this system is the center with density current attitude moisture film tower 1, be provided with tangential smoke inlet 2 in its bottom, be provided with slurry spraying spray gun 3 in the porch, the atomized drop particle diameter is between 10～30 microns, flue gas rises with spiral form through cooling and with droplet reaction back, particle in the flue gas is owing to the effect particle diameter of droplet is grown up, because action of centrifugal force, make particle fly to tower wall liquid film, caught by liquid film and flow out outside the tower with current.Be provided with study of water film distribution device 6 in the desulfurizing tower bottom, liquid film can be caught flying dust and be increased reaction surface on the one hand, and liquid film can be protected the tower wall on the other hand, avoids its wearing and tearing.Be provided with slurries spray equipment 4 in the distribution grid bottom, make the flue gas can be fully and slurry reaction.Be provided with V-type screen 5 and packing layer 7 at an upper portion thereof, packing layer adopts the solid filling ball of different proportion, and this filling ball has guaranteed that fluidized state is good under the situation of high gas speed, owing to adopt V-type screen 7 can form the inner loop of filling ball, prevent the generation of fouling clogging simultaneously.Packing layer top is provided with spray head 8, and fresh slurries add from here, and spray head 8 tops are provided with demister 9, makes flue gas after being purified no longer be with water.The desulfurizing tower bottom is provided with desulfurization slurry outlet, adopts anticorrosion pipeline to be connected between this outlet and the sedimentation basin 10, desulfurization slurry removes bulky grain in sedimentation basin after, enters enrichment facility 14 and regenerated reactor 11, can produce the concentrated sulfuric acid 15 after the slurries process is concentrated.Desulfurization slurry in regenerated reactor 11 with in and medicament reaction, keep pH value between 2～5, keep the reactivity and the catalysis characteristics of buck supernatant.Nertralizer is added by nertralizer adding apparatus 12, and nertralizer adopts pH value greater than 9 alkaline solution, and this alkaline solution is quick lime and/or white lime and/or lime stone and/or magnesia and/or spent lye.Slurries after the neutralisation treatment enter desulfurization reaction tower 1 and carry out desulphurization reaction after liquid-solid separator 13 is handled.
The above only is a preferred implementation of the present utility model.Should be pointed out that for a person skilled in the art, according to the same principle of invention of the utility model, can also make many modification and improvement, but these all fall into protection domain of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420009309 CN2721212Y (en) | 2004-09-10 | 2004-09-10 | Apparatus for desulfurizing and dust collecting fluidized gas with different specific weights |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420009309 CN2721212Y (en) | 2004-09-10 | 2004-09-10 | Apparatus for desulfurizing and dust collecting fluidized gas with different specific weights |
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| CN2721212Y true CN2721212Y (en) | 2005-08-31 |
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| CN 200420009309 CN2721212Y (en) | 2004-09-10 | 2004-09-10 | Apparatus for desulfurizing and dust collecting fluidized gas with different specific weights |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357484A (en) * | 2011-10-07 | 2012-02-22 | 刘军 | Mechanical filler cleaning method and mechanical filler cleaning device |
| CN103877800A (en) * | 2014-04-03 | 2014-06-25 | 顾志龙 | Haze removal device and haze removal combined purification system |
| CN104446064A (en) * | 2014-12-03 | 2015-03-25 | 北京中晶佳镁环境科技股份有限公司 | Device and method for producing cement by virtue of flue gas desulfurization |
| CN104529205A (en) * | 2014-12-03 | 2015-04-22 | 北京中晶佳镁环境科技股份有限公司 | Cement production apparatus and method |
| CN105195004A (en) * | 2015-10-27 | 2015-12-30 | 李继凤 | Combined desulphurization and dedusting apparatus and method for wet flue gas |
| CN105214465A (en) * | 2015-10-27 | 2016-01-06 | 李继凤 | The apparatus and method of integration wet process of FGD dedusting |
| CN106076925A (en) * | 2016-06-20 | 2016-11-09 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of method cleaning desulfurizing tower filler |
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2004
- 2004-09-10 CN CN 200420009309 patent/CN2721212Y/en not_active IP Right Cessation
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357484A (en) * | 2011-10-07 | 2012-02-22 | 刘军 | Mechanical filler cleaning method and mechanical filler cleaning device |
| CN102357484B (en) * | 2011-10-07 | 2013-05-01 | 刘军 | Mechanical filler cleaning method and mechanical filler cleaning device |
| CN103877800A (en) * | 2014-04-03 | 2014-06-25 | 顾志龙 | Haze removal device and haze removal combined purification system |
| CN103877800B (en) * | 2014-04-03 | 2016-08-17 | 顾志龙 | Except haze device and except haze combination purification system |
| CN104446064A (en) * | 2014-12-03 | 2015-03-25 | 北京中晶佳镁环境科技股份有限公司 | Device and method for producing cement by virtue of flue gas desulfurization |
| CN104529205A (en) * | 2014-12-03 | 2015-04-22 | 北京中晶佳镁环境科技股份有限公司 | Cement production apparatus and method |
| US10815153B2 (en) | 2014-12-03 | 2020-10-27 | Shanghui TONG | Apparatus and method for producing cement through flue gas desulfurization |
| CN105195004A (en) * | 2015-10-27 | 2015-12-30 | 李继凤 | Combined desulphurization and dedusting apparatus and method for wet flue gas |
| CN105214465A (en) * | 2015-10-27 | 2016-01-06 | 李继凤 | The apparatus and method of integration wet process of FGD dedusting |
| CN106076925A (en) * | 2016-06-20 | 2016-11-09 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of method cleaning desulfurizing tower filler |
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