CN203899446U - Flue gas desulfurization device with coarse desulfurization function - Google Patents

Flue gas desulfurization device with coarse desulfurization function Download PDF

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CN203899446U
CN203899446U CN201420339714.0U CN201420339714U CN203899446U CN 203899446 U CN203899446 U CN 203899446U CN 201420339714 U CN201420339714 U CN 201420339714U CN 203899446 U CN203899446 U CN 203899446U
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flue gas
lime stone
flue
absorption tower
desulfur device
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CN201420339714.0U
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聂华
洪燕
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CPI Yuanda Environmental Protection Engineering Co Ltd
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CPI Yuanda Environmental Protection Engineering Co Ltd
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Abstract

The utility model discloses a flue gas desulfurization device with a coarse desulfurization function. The flue gas desulfurization device comprises an absorption tower and a gas inlet flue, wherein the gas inlet flue is connected with the gas inlet of the absorption tower, the gas inlet flue is provided with an accident spray system, and the accident spray system is provided with a spray pipeline I used for spraying limestone slurry. According to the flue gas desulfurization device, primary coarse desulfurization is carried out on flue gas inside the gas inlet flue by additionally arranging the spray pipeline I capable of spraying the limestone slurry in the accident spray system to reduce the desulfurization load of the absorption tower, so that the desulfurization efficiency of the desulfurization device is improved, and the standard discharge of the flue gas is realized; the limestone slurry inside the absorption tower can be directly used as the limestone slurry inside the spray pipeline I and participates in circular spray, an additionally arranged feed and discharge system can also be used, and the desulfurization device is unnecessary to greatly reformed, so that the equipment investment is reduced, and the manufacturing cost is reduced.

Description

Have the flue gas desulfur device of thick desulfurizing function concurrently
Technical field
The utility model relates to a kind of flue gas desulfur device, particularly a kind of flue gas desulfur device that has thick desulfurizing function concurrently.
Background technology
China is a country taking coal as main energy sources, and coal fired power generation is one of most important approach of coal in China utilization.In numerous atmosphere pollutions of fossil-fired unit discharge, SO 2and dust is larger to the harm of environment, be the major pollutants that will control.Along with social progress and expanding economy, thermal power plant has been subject to people's common concern to the pollution of atmospheric environment, and therefore effectively reducing pollutant emission is the severe challenge that China's energy field sustainable development is faced to improve on the impact of environment.Wet process of FGD can reduce SO on a large scale 2discharge, desulfuration absorbing tower utilizes lime stone alkaline slurry to spray from the top down, flue gas flows from bottom to top, lime stone slurry drops in and in dropping process, absorbs the SO in flue gas 2, generate the byproducts such as gypsum, reach the SO removing in flue gas 2object, slough SO 2flue gas enter chimney and enter atmosphere.Desulphurization system generally will arrange accident spray system in air inlet flue, its Main Function is for example, by spray cryogenic liquid (water) to reduce former flue-gas temperature, otherwise boiler original flue-gas temperature is too high, will affect the normal operation of equipment in tower, even directly burning apparatus, causes economic loss and security incident.China's ature of coal is poor, SO in flue gas 2content is very high, and qualified discharge must have very high desulfuration efficiency, and this has increased burden to desulfurizer, and the desulfuration efficiency that how to improve desulfurizer has just become technical barrier.
Therefore, just need to improve existing flue gas desulfur device, make its just preliminary desulfurization of process before flue gas enters absorption tower, to alleviate the desulfurization burden on absorption tower, thereby the desulfuration efficiency in raising desulfurizer, realizes the qualified discharge of flue gas, and without desulfurizer is carried out to large transformation, to reduce equipment investment, reduce manufacturing cost.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of flue gas desulfur device that has thick desulfurizing function concurrently, it is the just preliminary desulfurization of process before flue gas enters absorption tower, to alleviate the desulfurization burden on absorption tower, thereby the desulfuration efficiency in raising desulfurizer, realizes the qualified discharge of flue gas, and without desulfurizer is carried out to large transformation, to reduce equipment investment, reduce manufacturing cost.
The flue gas desulfur device that has thick desulfurizing function concurrently of the present utility model, the air inlet flue that comprises absorption tower and be connected with the air inlet on described absorption tower, described air inlet flue is provided with accident spray system, and described accident spray system is provided with the spray piping I for spraying lime stone slurry.
Further, the inner chamber bottom on described absorption tower is provided with limestone slurry liquid pool, and one end of described spray piping I is communicated with described limestone slurry liquid pool, and described spray piping I is connected with the first driving pump for delivery of lime stone slurry.
Further, described accident spray system is also provided with the spray piping II for spraying water.
Further, flue gas desulfur device also comprises lime stone slurry circulated sprinkling system, described lime stone slurry circulated sprinkling system comprises the spray piping III for spraying lime stone slurry, one end of described spray piping III is communicated with described limestone slurry liquid pool, the other end stretches into inner chamber top, described absorption tower, and described spray piping III is connected with the second driving pump for delivery of lime stone slurry.
Further, in described limestone slurry liquid pool, be provided with oxidation air pipeline and at least one agitator I, described oxidation air pipeline is connected with oxidation fan, and described agitator I is connected with stirring motor I, and described at least one, agitator I is positioned at the top of described oxidation air pipeline.
Further, between described spray piping III and the gas outlet on described absorption tower, be provided with demister.
Further, flue gas desulfur device also comprises limestone slurry liquid supply system, described limestone slurry liquid supply system comprises the lime stone slurry case being connected with described absorption tower and the lime stone slurry preparing mechanism being connected with described lime stone slurry case, in described lime stone slurry case, be provided with at least one agitator II, described agitator II is connected with stirring motor II, is provided with the 3rd driving pump for delivery of lime stone slurry between described lime stone slurry case and described absorption tower.
Further, flue gas desulfur device also comprises gypsum discharge system, described gypsum discharge system comprises the gypsum dehydration mechanism being connected with described limestone slurry liquid pool, between described limestone slurry liquid pool and described gypsum dehydration mechanism, is provided with the 4th driving pump for delivery of gypsum slurries.
Further, flue gas desulfur device also comprises the flue of giving vent to anger being connected with the gas outlet on described absorption tower, in described air inlet flue and the flue of giving vent to anger, is provided with flue gas heat-exchange unit.
Further, the liquid outlet of described spray piping II, spray piping I and spray piping III is equipped with nozzle.
The beneficial effects of the utility model: the flue gas desulfur device that has thick desulfurizing function concurrently of the present utility model, by set up the spray piping I that can spray lime stone slurry in accident spray system, thereby the flue gas in air inlet flue is carried out to preliminary thick desulfurization, alleviate the desulfurization burden on absorption tower, thereby the desulfuration efficiency in raising desulfurizer, realizes the qualified discharge of flue gas; Lime stone slurry in spray piping I can directly use the lime stone slurry in absorption tower and participate in circulated sprinkling, also can use supply, the discharge system of separately establishing, and without desulfurizer is carried out to large transformation, reduces equipment investment, reduces manufacturing cost.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is Figure 1A place enlarged drawing.
Detailed description of the invention
Fig. 1 is structural representation of the present utility model, Fig. 2 is Figure 1A place enlarged drawing, as shown in the figure: the flue gas desulfur device that has thick desulfurizing function concurrently of the present embodiment, the air inlet flue 2 that comprises absorption tower 1 and be connected with the air inlet 11 on described absorption tower 1, described air inlet flue 2 is provided with accident spray system, and described accident spray system is provided with the spray piping I 32 for spraying lime stone slurry; By set up the spray piping I 32 that can spray lime stone slurry in accident spray system, thereby the flue gas in air inlet flue 2 is carried out to preliminary thick desulfurization, alleviate the desulfurization burden on absorption tower 1, thereby improve the desulfuration efficiency in desulfurizer, realize the qualified discharge of flue gas; Lime stone slurry in spray piping I 32 can directly use the lime stone slurry in absorption tower 1 and participate in circulated sprinkling, also can use supply, the discharge system of separately establishing, and without desulfurizer is carried out to large transformation, reduces equipment investment, reduces manufacturing cost; Accident spray system can adopt 316L material or highly corrosion resistant abrasion resisting material more, meets long-term dry flue gas condition and wet flue gas corrosion in short-term, and accident spray section flue carries out preservative treatment simultaneously; For preventing that lime stone slurry is in flue fouling, accident spray system can be interrupted spray lime stone slurry, and the slurries of piling up in hydroblasting flue.
In the present embodiment, the inner chamber bottom on described absorption tower 1 is provided with limestone slurry liquid pool 13, and one end of described spray piping I 32 is communicated with described limestone slurry liquid pool 13, and described spray piping I 32 is connected with the first driving pump 33 for delivery of lime stone slurry; Lime stone slurry in spray piping I 32 directly uses the lime stone slurry in absorption tower 1 and participates in circulated sprinkling, is conducive to alleviate the transformation degree to desulfurizer, reduces to greatest extent equipment investment, reduces manufacturing cost; When transformation, only need to directly set up spray piping I 32 and the first driving pump 33.
In the present embodiment, described accident spray system is also provided with the spray piping II 31 for spraying water; Spray piping II 31 water sprays, for flue gas is lowered the temperature, have certain desulfurized effect simultaneously.
In the present embodiment, this flue gas desulfur device also comprises lime stone slurry circulated sprinkling system, described lime stone slurry circulated sprinkling system comprises the spray piping III 41 for spraying lime stone slurry, one end of described spray piping III 41 is communicated with described limestone slurry liquid pool 13, the other end stretches into 1 inner chamber top, described absorption tower, and described spray piping III 41 is connected with the second driving pump 42 for delivery of lime stone slurry; Spray piping III 41 can be set to multilayer, and Multi-layer sprinkling makes the desulfurization performance of desulfuration absorbing tower very high; Spray piping III 41 is located between smoke air inlet 11 and gas outlet 12, can on the liquid outlet of spray piping III 41, nozzle be set simultaneously, strengthens spray effect.
In the present embodiment, in described limestone slurry liquid pool 13, be provided with oxidation air pipeline 51 and at least one agitator I 52, described oxidation air pipeline 51 is connected with oxidation fan 53, described agitator I 52 is connected with stirring motor I 54, and described at least one, agitator I 52 is positioned at the top of described oxidation air pipeline 51; Owing to being provided with the agitator I 52 that is positioned at oxidation air pipeline 51 tops, the air that oxidation air pipeline 51 passes into is at the interior formation air pocket of limestone slurry liquid pool 12, in the time rising, stirred and be broken for small bubble by agitator I 52, small bubble ratio surface area is very large, increase the mass transfer area of oxygen in bubble, accelerated the rate of dissolution of oxygen, improved the content of oxygen in slurries, desulphurization reaction speed is increased, strengthened the desulphurizing ability of whole device.
In the present embodiment, between described spray piping III 41 and the gas outlet on described absorption tower 1, be provided with demister 61; Demister 61, for removing the moisture of flue gas, makes the flue gas flowing out meet discharge standard.
In the present embodiment, this flue gas desulfur device also comprises limestone slurry liquid supply system, described limestone slurry liquid supply system comprises the lime stone slurry case 71 being connected with described absorption tower 1 and the lime stone slurry preparing mechanism 72 being connected with described lime stone slurry case 71, in described lime stone slurry case 71, be provided with at least one agitator II 73, described agitator II 73 is connected with stirring motor II 74, is provided with the 3rd driving pump 75 for delivery of lime stone slurry between described lime stone slurry case 71 and described absorption tower 1; Lime stone slurry preparing mechanism 72 can be limestone powder bin, screw(-type) feeder and the grey water mixer being communicated with successively from top to bottom, and the lime stone slurry outlet of grey water mixer is communicated with lime stone slurry case 71; Agitator II 73 is conducive to make lime stone slurry to form homogeneous solution, increases the desulphurization reaction speed of desulfurizing tower 1; Can also on lime stone slurry case 71, blast pipe be set, the water vapour and the oxidation air that in lime stone slurry case 71, produce are just discharged, can realize and prevent the limestone powder generation depositional phenomenon of making moist near inlet region, steadily carry and make thus whole system reach higher security reliability to realize slurries.
In the present embodiment, this flue gas desulfur device also comprises gypsum discharge system, described gypsum discharge system comprises the gypsum dehydration mechanism 81 being connected with described limestone slurry liquid pool 13, between described limestone slurry liquid pool 13 and described gypsum dehydration mechanism 81, is provided with the 4th driving pump 82 for delivery of gypsum slurries; Gypsum dehydration mechanism 81 can be the combination of cyclone and vacuum belt dewaterer; Gypsum slurries in limestone slurry liquid pool 13 is delivered to gypsum dehydration mechanism 81 by the 4th driving pump 82 and is carried out processed, and the overflowing liquid that dehydration produces and filtrate flow directly into lime stone slurry case 71 and recycles, energy-conserving and environment-protective.
In the present embodiment, this flue gas desulfur device also comprises the flue 9 of giving vent to anger being connected with the gas outlet 12 on described absorption tower 1, in described air inlet flue 2 and the flue 9 of giving vent to anger, is provided with flue gas heat-exchange unit 62; Flue gas heat-exchange unit 62 is located at air inlet flue 2 simultaneously and gives vent to anger in flue 9, utilizes undesulfured high-temperature flue gas to remove to add the clean flue gas after thermally desulfurizing by flue gas heat-exchange unit 62, makes clean flue gas be heated to from 40 DEG C the rising height that promotes flue gas; Utilize desulfurization heat exchanger 62 both can reclaim heat, the saving energy of high-temperature flue gas, can ensure again normal work, the minimizing water consumption of desulfurizer, improve desulfuration efficiency, the secondary pollution of reduction to atmosphere of desulfurizer simultaneously.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims (10)

1. one kind has the flue gas desulfur device of thick desulfurizing function concurrently, the air inlet flue that comprises absorption tower and be connected with the air inlet on described absorption tower, described air inlet flue is provided with accident spray system, it is characterized in that: described accident spray system is provided with the spray piping I for spraying lime stone slurry.
2. the flue gas desulfur device that has thick desulfurizing function concurrently according to claim 1, it is characterized in that: the inner chamber bottom on described absorption tower is provided with limestone slurry liquid pool, one end of described spray piping I is communicated with described limestone slurry liquid pool, and described spray piping I is connected with the first driving pump for delivery of lime stone slurry.
3. the flue gas desulfur device that has thick desulfurizing function concurrently according to claim 2, is characterized in that: described accident spray system is also provided with the spray piping II for spraying water.
4. the flue gas desulfur device that has thick desulfurizing function concurrently according to claim 3, it is characterized in that: flue gas desulfur device also comprises lime stone slurry circulated sprinkling system, described lime stone slurry circulated sprinkling system comprises the spray piping III for spraying lime stone slurry, one end of described spray piping III is communicated with described limestone slurry liquid pool, the other end stretches into inner chamber top, described absorption tower, and described spray piping III is connected with the second driving pump for delivery of lime stone slurry.
5. the flue gas desulfur device that has thick desulfurizing function concurrently according to claim 4, it is characterized in that: in described limestone slurry liquid pool, be provided with oxidation air pipeline and at least one agitator I, described oxidation air pipeline is connected with oxidation fan, described agitator I is connected with stirring motor I, and described at least one, agitator I is positioned at the top of described oxidation air pipeline.
6. the flue gas desulfur device that has thick desulfurizing function concurrently according to claim 5, is characterized in that: between described spray piping III and the gas outlet on described absorption tower, be provided with demister.
7. the flue gas desulfur device that has thick desulfurizing function concurrently according to claim 6, it is characterized in that: flue gas desulfur device also comprises limestone slurry liquid supply system, described limestone slurry liquid supply system comprises the lime stone slurry case being connected with described absorption tower and the lime stone slurry preparing mechanism being connected with described lime stone slurry case, in described lime stone slurry case, be provided with at least one agitator II, described agitator II is connected with stirring motor II, is provided with the 3rd driving pump for delivery of lime stone slurry between described lime stone slurry case and described absorption tower.
8. the flue gas desulfur device that has thick desulfurizing function concurrently according to claim 7, it is characterized in that: flue gas desulfur device also comprises gypsum discharge system, described gypsum discharge system comprises the gypsum dehydration mechanism being connected with described limestone slurry liquid pool, between described limestone slurry liquid pool and described gypsum dehydration mechanism, is provided with the 4th driving pump for delivery of gypsum slurries.
9. the flue gas desulfur device that has thick desulfurizing function concurrently according to claim 8, is characterized in that: flue gas desulfur device also comprises the flue of giving vent to anger being connected with the gas outlet on described absorption tower, in described air inlet flue and the flue of giving vent to anger, is provided with flue gas heat-exchange unit.
10. the flue gas desulfur device that has thick desulfurizing function concurrently according to claim 9, is characterized in that: the liquid outlet of described spray piping II, spray piping I and spray piping III is equipped with nozzle.
CN201420339714.0U 2014-06-24 2014-06-24 Flue gas desulfurization device with coarse desulfurization function Active CN203899446U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104740993A (en) * 2015-04-13 2015-07-01 中电投远达环保工程有限公司 Three-stage zoned collaborative dust removal and desulfurization system
CN105148719A (en) * 2015-10-19 2015-12-16 广东电网有限责任公司电力科学研究院 Improved thermal power plant desulfuration device and improved method thereof
CN105536494A (en) * 2015-12-30 2016-05-04 廖厚伍 Single-tower pH double-region double-circulation desulfurization process
CN111001290A (en) * 2019-12-25 2020-04-14 广东新生环保科技股份有限公司 Lime slurry preparation and linkage slurry adding system
CN112999839A (en) * 2021-03-26 2021-06-22 四川利弘陶瓷有限公司 Flue gas desulfurization system of drying tower kiln

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104740993A (en) * 2015-04-13 2015-07-01 中电投远达环保工程有限公司 Three-stage zoned collaborative dust removal and desulfurization system
CN104740993B (en) * 2015-04-13 2017-05-24 中电投远达环保工程有限公司 Three-stage zoned collaborative dust removal and desulfurization system
CN105148719A (en) * 2015-10-19 2015-12-16 广东电网有限责任公司电力科学研究院 Improved thermal power plant desulfuration device and improved method thereof
CN105536494A (en) * 2015-12-30 2016-05-04 廖厚伍 Single-tower pH double-region double-circulation desulfurization process
CN111001290A (en) * 2019-12-25 2020-04-14 广东新生环保科技股份有限公司 Lime slurry preparation and linkage slurry adding system
CN112999839A (en) * 2021-03-26 2021-06-22 四川利弘陶瓷有限公司 Flue gas desulfurization system of drying tower kiln

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