CN201885585U - Guiding type desulfurizer for smoke of sintering machine - Google Patents
Guiding type desulfurizer for smoke of sintering machine Download PDFInfo
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- CN201885585U CN201885585U CN2010206028826U CN201020602882U CN201885585U CN 201885585 U CN201885585 U CN 201885585U CN 2010206028826 U CN2010206028826 U CN 2010206028826U CN 201020602882 U CN201020602882 U CN 201020602882U CN 201885585 U CN201885585 U CN 201885585U
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- bellows
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Abstract
The utility model discloses a guiding type desulfurizer for smoke of a sintering machine, which is used for an air bellows of a sintering machine. The air bellows comprises an air bellows head end, an air bellows middle part and an air bellows tail end that are arranged in sequence, the desulfurizer consists of a first primary dust collector and a second primary dust collector, the input end of the first primary dust collector is connected to the air bellows middle part, the output end of the first primary dust collector is provided with a first main draft fan, the output end of the first main draft fan is connected to a reactor, the output end of the reactor is connected to a desulphurization dust collector, the gas-phase output end of the desulphurization dust collector is connected with a chimney by a booster fan, and the output end of the first main draft fan is further directly connected to the chimney; and the input end of the second primary dust collector is connected to the air bellows head end and the air bellows tail end, the output end of the first main draft fan is provided with a second main draft fan, and the gas-phase output end of the second main draft fan is connected to the chimney. With the utility model, the investment and running cost can be reduced, the discharge of sulfur dioxide can be standard when sulfur content of a sinter ore changes, and the environmental pollution is lowered.
Description
[technical field]
The utility model relates to the discharged flue gas purified treatment field to burning institute, relates in particular to SO in the large and medium-sized sintering device flue gas of steel plant
2Remove device.
[technical background]
Sintering flue gas desulfurization is the emphasis and the difficult point of present steel industry efforts at environmental protection." the comprehensive programme of work of energy-saving and emission-reduction " of State Council issue clearly proposed to realize during " 11th Five-Year " goal task of energy-saving and emission-reduction: total emissions of major pollutants reduces 10%; Promptly by 2010, national sulfur dioxide (SO2) emissions total amount reduces to 2,295 ten thousand tons by 2,549 ten thousand tons in 2005.
At present, the steel industry SO2 emissions account for 8% of national industrial sulfur dioxide (SO2) emissions total amount, are only second to the thermoelectricity industry, occupy second.According to investigations, national steel industry sulfur dioxide (SO2) emissions total amount was about 740,000 tons in 2005, about 760,000 tons by 2006; 2007 is 75.64 ten thousand tons, is only than 2006 and has reduced 0.5%; Iron and steel enterprise's SO2 emissions of national emphasis statistics in 2008 are about 1,100,000 tons, and wherein the sintering link is 800,000 tons, accounts for more than 70% of total emission volumn.
By above-mentioned data as can be known, in " 11th Five-Year " preceding 3 years, SO2 emissions did not only realize reducing discharging on basis in 2005, and having on the contrary to a certain degree increases.And by in by the end of May, 2009, China only forms 8.2 ten thousand tons of sintering flue gas desulfurization abilities, so it is very severe to reduce discharging situation.
Up to now, the propelling of sintering flue gas desulfurization work is still slow, and main cause is as follows: the one, and investment is big, operating cost is high because the sinter fume amount causes desulfurization greatly; The 2nd, original steel plant do not consider flue gas desulfurization, cause this place anxiety, difficult arrangement; The 3rd, all there are some technical problems in various desulfur technologies.In the power industry flue gas desulfurization technique, technical barriers such as equipment corrosion is serious, obstruction, the difficult dehydration of gypsum, wastewater treatment difficulty have appearred in the limestone/gypsum wet method that accounts for main flow in the sintering sector application, and SO at present
3, be difficult to remove behind the formation aerosols such as HCl, HF; And ammonia-ammonium sulfate method is except the danger that raw material ammonia exist to be leaked, because the moisture-absorption characteristics and the nominal particle size of sulphur ammonium, the desulfurization after funnel is prone to and emits white cigarette phenomenon, and after the desulfurization heavy metal with bioxin can enter desulfurizing byproduct-sulphur ammonium; Also have active carbon/burnt method, though have the comprehensive remove of combined pollutant, one-time investment and operating cost are so high, can not get large tracts of land at all and promote.
At present, scientific and technical personnel are carrying out some useful researchs aspect sinter fume pollutant removing technology and the device, as notification number is the patent of CN201302374Y, sintering device flue gas has been carried out selective desulfurization, greatly reduce equipment and use cost, but need sintering machine master exhausting system is readjusted, influence the ripe production technology of sintering machine, on the other hand if not desulfurization part is because the higher meeting of variation sulfur content in ore deposit causes sulphur emissions to exceed standard; As notification number is the utility model patent of CN101306311A, because be that full flue gas removes, so cost is very high, the place is arranged nervous.Equally, notification number is the utility model patent of CN101254394A, also is that full flue gas is handled, so cost is also very high, the place is arranged nervous.
[utility model content]
The purpose of this utility model is exactly in order to solve problems of the prior art, a kind of sintering device flue gas respective-guide type desulfurizer is proposed, not only can reduce investment and operating cost, even and the sintering deposit sulfur content change and still can make sulfur dioxide (SO2) emissions up to standard, reduce environmental pollution.
For achieving the above object, the utility model patent has proposed a kind of sintering device flue gas respective-guide type desulfurizer, the bellows that are used for sintering machine, described bellows comprise the bellows head end that sets gradually, bellows middle part and bellows end, this device comprises the first elementary deduster and the second elementary deduster, the input of the described first elementary deduster is connected to the bellows middle part, the first elementary deduster output is provided with first main exhauster, the output of first main exhauster is connected to reactor, the output of reactor is connected to desulfurizing dust-collector, the gas phase output of desulfurizing dust-collector links to each other with chimney by booster fan, and the output of described first main exhauster also is directly connected to chimney; The input of the described second elementary deduster is connected to bellows head end and bellows end, and the output of the second elementary deduster is provided with second main exhauster, and the gas phase output of second main exhauster is connected to chimney.
As preferably, be provided with first baffle door between described first main exhauster and the reactor, be provided with the second baffle door between first main exhauster and the chimney, be provided with the 3rd baffle door between the output of the output of second main exhauster and first main exhauster, be provided with the 4th baffle door between second main exhauster and the chimney, can regulate the flue gas treating capacity of each passage.
As preferably, be provided with the 5th baffle door between described booster fan and the chimney, can regulate the flue gas treating capacity.
As preferably, described desulfurizing dust-collector connects humidifier by ash-pit, and the output of humidifier is connected in the reactor, and is recycling, saves cost, reduces and pollutes.
As preferably, described desulfurizing dust-collector adopts sack cleaner or electric cleaner or electric bag dust collector, and is simple in structure, good dedusting effect, and cost is low.
The beneficial effect of the utility model patent: the utility model is done differentiated treatment to the flue gas of bellows different parts, to SO wherein
2The higher sinter fume master exhausting system of concentration is carried out the desulfurization processing, with another SO
2The sinter fume that concentration is very low partly imports desulfurizer and gives the desulfurization processing, and part is discharging directly, thereby reaches SO
2Qualified discharge reduces the smoke treatment amount, reduces equipment investment and system's floor space, is particularly suitable for the more nervous occasion in desulfurization place of original sintering machine.The utility model does not need former sintering machine master exhausting system is readjusted, and helps to guarantee the reliable and stable operation of sintering process, can not produce influential to sintering process.The utility model adapts to the variation of sintering deposit and the SO that causes
2Concentration of emission changes, at SO
2The smoke treatment amount that can increase desulphurization system under the situation that concentration of emission increases by the adjusting that the flue gas branch is led device reaches the purpose of qualified discharge.The utility model is primarily aimed at large and medium-sized sintering machine.
[description of drawings]
Fig. 1 is the structural representation of a kind of sintering device flue gas respective-guide type of the utility model desulfurizer.
[specific embodiment]
As shown in Figure 1, sintering device flue gas respective-guide type desulfurizer, the bellows that are used for sintering machine, described bellows comprise the bellows head end 51 that sets gradually, bellows middle part 52 and bellows end 53, this device comprises the first elementary deduster 11 and the second elementary deduster 21, the input of the described first elementary deduster 11 is connected to bellows middle part 52, first elementary deduster 11 outputs are provided with first main exhauster 12, the output of first main exhauster 12 is connected to reactor 13, the output of reactor 13 is connected to desulfurizing dust-collector 14, the gas phase output of desulfurizing dust-collector 14 links to each other with chimney 4 by booster fan 15, and the output of described first main exhauster 12 also is directly connected to chimney 4; The gas phase output that the output that the input of the described second elementary deduster 21 is connected to bellows head end 51 and bellows end 53, the second elementary dedusters 21 is provided with second main exhauster, 22, the second main exhausters 22 is connected to reactor 13 and chimney 4.Be provided with first baffle door 31 between described first main exhauster 12 and the reactor 13, be provided with second baffle door 32 between first main exhauster 12 and the chimney 4, be provided with the 3rd baffle door 33 between the output of the output of second main exhauster 22 and first main exhauster 12, be provided with the 4th baffle door 34 between second main exhauster 22 and the chimney 4, be provided with the 5th baffle door 35 between booster fan 15 and the chimney 4, the flue gas treating capacity that can regulate each passage.Described desulfurizing dust-collector 14 connects humidifier 17 by ash-pit 16, and the output of humidifier 17 is connected in the reactor 13, and is recycling, saves cost, reduces and pollutes.Described desulfurizing dust-collector 14 adopts sack cleaner or electric cleaner or electric bag dust collector, and is simple in structure, good dedusting effect, and cost is low.
Sintering device flue gas respective-guide type sulfur method, the bellows that are used for sintering machine, described bellows comprise bellows head end 51, bellows middle part 52 and the bellows end 53 that sets gradually, this method comprises sulfur removal technology line and non-sulfur removal technology line, described sulfur removal technology line is connected to bellows middle part 52, the flue gas at bellows middle part 52 enters chimney 4, the first main exhausters 12 successively and also directly is connected to chimney 4 by second baffle door 32 behind the first elementary deduster 11, first main exhauster 12, first baffle door 31, reactor 13, desulfurizing dust-collector 14, booster fan 15; Non-sulfur removal technology line is connected to bellows head end 51 and bellows end 53, the flue gas of bellows head end 51 and bellows end 53 is connected to chimney 4 and reactor 13 successively behind the second elementary deduster 21, second main exhauster 22, be provided with the 3rd baffle door 33 between the reactor 13 and second main exhauster 22, be provided with the 4th baffle door 34 between reactor 13 and the chimney 4, also be provided with the 5th baffle door 35 between booster fan 15 and the chimney 4.At the higher characteristics of water capacity in the sinter fume, the outlet temperature of desulfurizing dust-collector 14 is controlled at 80～100 ℃.
This technology comprises following three flue gas circuits: desulfurization flue gas circuit, non-desulfurization flue gas circuit and branch are led desulfurization flue gas circuit.
Non-desulfurization flue gas circuit comprises the second elementary deduster 21, second main exhauster 22, the 4th baffle door 34, the chimney 4 that connects successively.The described second elementary deduster 21 can be cyclone dust collectors or patterns such as multi-tube dust cleaner or electric cleaner or sack cleaner or electric bag dust collector.Non-desulfurization flue gas circuit (not comprising the 4th baffle door 34) has existed when sintering machine is built, the equipment that the 4th baffle door 34 need install additional when being the desulphurization system installing.Described the 4th baffle door 34 is adjustable single baffle door, reaches branch by the aperture of regulating the 4th baffle door 34, the 3rd baffle door 33 and leads the purpose that suitable exhaust gas volumn enters desulphurization system, and the 3rd baffle door 33 and connection flue are by the 10-30% apolegamy of total exhaust gas volumn.
Desulfurization flue gas circuit comprises the first elementary deduster 11, first main exhauster 12, first baffle door 31, reactor 13, desulfurizing dust-collector 14, booster fan 15, the 5th baffle door 35, the chimney 4 that connects successively.Described first baffle door, 31 inlets, 35 outlets of the 5th baffle door are connected with flue, and flue is provided with second baffle door 32.Close second baffle door 32 when desulfurization need put into operation, the flue gas of opening first baffle door 31,12 extractions of the 5th baffle door 35, the first main exhausters enters chimney 4 after desulfurization.Close first baffle door 31, the 5th baffle door 35 when desulfurization does not put into operation, the flue gas of opening 22 extractions of second baffle door 32, the second main exhausters directly enters chimney 4.
Divide and to lead desulfurization flue gas circuit, be incorporated into (before first baffle door 31) between first main exhauster 12 and the second baffle door 32, thereby be connected to the 3rd baffle door 33 of reactor 13 for connecing between second main exhauster 22 and the 4th baffle door 34.Described the 3rd baffle door 33 is adjustable single baffle door, reaches branch by the aperture of regulating the 3rd baffle door 33, the 4th plate door and leads the purpose that suitable exhaust gas volumn enters desulphurization system.
According to the characteristics of sintering device flue gas, general front end bellows flue-gas temperature is lower, the SO of generation
2Seldom, and the middle part box temperature is higher, SO
2Concentration is higher, rear end bellows flue-gas temperature height, but the SO that generates
2Seldom.Common large and medium-sized sintering machine master exhausting system is by the configuration of two air exhausters, and with front and back ends bellows flue gas and become one the tunnel, middle bellows flue gas also becomes one the tunnel, respectively connects a main exhauster.According to " steel industry prevention and cure of pollution best practicable technology guide rule (explanation of compilation) " statistics of 45 sintering machines is shown average SO
2Discharging is 881.2mg/m
3, the average SO of maximum
2Discharging is 915.5mg/m
3Statistics shows sinter fume SO
2Concentration is not high, particularly SO wherein
2The sinter fume line that concentration is lower, SO
2Concentration of emission is generally 100-400mg/m
3, the machine of partially sintering need not desulfurization just can reach emission request, but considers the fluctuation of sintering deposit sulfur content, does not carry out desulfurization and handles SO sometimes
2Discharging exceeds standard.During design according to the highest SO that may occur
2Concentration, calculating needs wherein SO
2How many amounts are divided and are imported desulphurization systems and could guarantee qualified discharge in the lower sinter fume line of concentration, by the maximum exhaust gas volumn that may occur desulphurization system are set, and are generally the 60-80% of total sinter fume amount according to statistics maximum exhaust gas volumn.Press through SO after the desulphurization system desulfurization during the utility model design
2Discharging is 100-150mg/m
3Calculating needs to divide the exhaust gas volumn of leading.
The utility model is selected wherein SO
2The higher sinter fume line of concentration is done full flue gas desulfurization and is handled, with another SO
2The sinter fume that concentration is lower partly imports desulfurizer and gives the desulfurization processing, part is discharging directly, reaches qualified discharge behind the smoke comprehensive, greatly reduces cost of investment, simultaneously because the power consumption that reduces to reduce booster fan 15 of smoke treatment amount is saved operating cost.Because yet corresponding the reducing of the floor space that reduces whole desulphurization system of smoke treatment amount do not considered the particularly suitable in desulfurization place to former sintering machine.
The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, any scheme after the utility model simple transformation is all belonged to protection domain of the present utility model.
Claims (5)
1. sintering device flue gas respective-guide type desulfurizer, the bellows that are used for sintering machine, described bellows comprise the bellows head end that sets gradually, bellows middle part and bellows end, it is characterized in that: this device comprises the first elementary deduster and the second elementary deduster, the input of the described first elementary deduster is connected to the bellows middle part, the first elementary deduster output is provided with first main exhauster, the output of first main exhauster is connected to reactor, the output of reactor is connected to desulfurizing dust-collector, the gas phase output of desulfurizing dust-collector links to each other with chimney by booster fan, and the output of described first main exhauster also is directly connected to chimney; The input of the described second elementary deduster is connected to bellows head end and bellows end, and the output of the second elementary deduster is provided with second main exhauster, and the gas phase output of second main exhauster is connected to chimney.
2. a kind of sintering device flue gas respective-guide type desulfurizer as claimed in claim 1, it is characterized in that: be provided with first baffle door between described first main exhauster and the reactor, be provided with the second baffle door between first main exhauster and the chimney, be provided with the 3rd baffle door between the output of the output of second main exhauster and first main exhauster, be provided with the 4th baffle door between second main exhauster and the chimney.
3. a kind of sintering device flue gas respective-guide type desulfurizer as claimed in claim 2 is characterized in that: be provided with the 5th baffle door between described booster fan and the chimney.
4. a kind of sintering device flue gas respective-guide type desulfurizer as claimed in claim 1, it is characterized in that: described desulfurizing dust-collector connects humidifier by ash-pit, and the output of humidifier is connected in the reactor.
5. a kind of sintering device flue gas respective-guide type desulfurizer as claimed in claim 1 is characterized in that: described desulfurizing dust-collector adopts sack cleaner or electric cleaner or electric bag dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206028826U CN201885585U (en) | 2010-11-05 | 2010-11-05 | Guiding type desulfurizer for smoke of sintering machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206028826U CN201885585U (en) | 2010-11-05 | 2010-11-05 | Guiding type desulfurizer for smoke of sintering machine |
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| CN201885585U true CN201885585U (en) | 2011-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003886A (en) * | 2010-11-05 | 2011-04-06 | 浙江菲达脱硫工程有限公司 | Sintering machine flue gas separation conduction type desulfurizing device and method |
| CN107321174A (en) * | 2017-06-13 | 2017-11-07 | 武汉科技大学 | A kind of be coupled utilizes the sintering flue dust self-catalysis denitrating technique for sintering flue dust waste heat |
-
2010
- 2010-11-05 CN CN2010206028826U patent/CN201885585U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003886A (en) * | 2010-11-05 | 2011-04-06 | 浙江菲达脱硫工程有限公司 | Sintering machine flue gas separation conduction type desulfurizing device and method |
| CN107321174A (en) * | 2017-06-13 | 2017-11-07 | 武汉科技大学 | A kind of be coupled utilizes the sintering flue dust self-catalysis denitrating technique for sintering flue dust waste heat |
| CN107321174B (en) * | 2017-06-13 | 2020-04-03 | 武汉科技大学 | Sintering smoke autocatalytic denitration process by coupling and utilizing waste heat of sintering smoke |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110629 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |