CN203291661U - Circulation spraying device of boiler flue gas treatment system - Google Patents

Circulation spraying device of boiler flue gas treatment system Download PDF

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Publication number
CN203291661U
CN203291661U CN2013202654044U CN201320265404U CN203291661U CN 203291661 U CN203291661 U CN 203291661U CN 2013202654044 U CN2013202654044 U CN 2013202654044U CN 201320265404 U CN201320265404 U CN 201320265404U CN 203291661 U CN203291661 U CN 203291661U
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CN
China
Prior art keywords
sedimentation basin
spray liquid
circulating
coal
filtering
Prior art date
Application number
CN2013202654044U
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Chinese (zh)
Inventor
黄怀光
黄海灏
黄怀裕
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揭东巴黎万株纱华纺织有限公司
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Priority to CN2013202654044U priority Critical patent/CN203291661U/en
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Publication of CN203291661U publication Critical patent/CN203291661U/en

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Abstract

The utility model discloses a circulation spraying device of a boiler flue gas treatment system. The circulation spraying device comprises a spray device, a spray liquid collection tank, a sewage discharge pipe, a sewage circulating treatment tank, a water pump and a spray pipe, wherein the sewage circulating treatment tank is provided with a circulating water inlet and a circulating water outlet. The circulation spraying device is characterized is characterized by comprising a sedimentation tank and a filtering basin behind the sedimentation tank, wherein a coal slay filtering layer is arranged in the filtering basin, and the circulating water outlet is formed in the upper part of the filtering basin; the circulating water inlet is arranged at the rear part of the sedimentation tank, and a sewage outlet is formed at the lower part of the sedimentation tank. According to the treatment tank, with the filtering basin with the coal slay filtering layer arranged behind the sedimentation tank, the coal slay filtering layer plays the function of further filtering when the spray liquid passes through the coal slay filtering layer; special filtering equipment is not required, so that the sewage disposal cost is reduced with a more ideal purifying effect; as the coal slay obtained after the coal burning shows alkaline performance, so that a neutralization for the acid spray liquid is achieved and the sewage disposal cost is further reduced.

Description

The circulating sprayer of boiler flue gas treatment system

Technical field

The utility model relates to a kind of spray equipment, relates in particular to a kind of circulating sprayer of boiler flue gas treatment system.

Background technology

Industrial Boiler generally, all take coal as fuel, contains a large amount of dust particales, sulfur dioxide in coal-fired flue-gas, toxic gas and the pollutants such as nitrogen oxide and carbon black, generally serious upper limits that surpasses country's " boiler air pollution emission standard " defined all.

For solving the problem of boiler smoke discharging severe overweight, generally all adopt purifying column to carry out purified treatment before fume emission, make it to meet country's " boiler air pollution emission standard ".The internal structure of purifying column generally comprises spraying layer and purifier at present, purifier generally adopts demister, demister is located at the top of spraying layer, spraying layer is used for spraying alkaline solution, in the magnesia absorption process, spraying layer sprays magnesium hydroxide solution, makes sulfur dioxide and magnesium hydroxide in flue gas react and generate magnesium sulfite, demister is removed the water smoke in flue gas, and flue gas is further purified.Spray liquid after spray falls into the bottom of purifying column,, if directly spray liquid is emitted, can cause serious environmental pollution and water resource waste, therefore, generally all by circulating sprayer is set, carries out circulated sprinkling.

Present circulating sprayer generally comprises spray equipment, spray liquid collecting pit, effluent outfall, effluent cycle treatment pond, water pump and shower, the effluent cycle treatment pond is provided with circulation water inlet and circulating outlet, spray equipment is arranged on the top of spray liquid collecting pit, one end of effluent outfall is connected with the spray liquid collecting pit, the other end of effluent outfall is connected with the circulation water inlet, circulating outlet is connected with spray equipment by shower, and water pump is arranged on shower.Spray liquid under spray equipment sprays flows into the effluent cycle treatment pond by the purifying column bottom, precipitates in the effluent cycle treatment pond, then by water pump, is extracted out, through shower, by spray equipment, is again sprayed.Wherein, because treatment tank is relatively simple for structure, just the spray liquid that flows out from the purifying column bottom is precipitated, precipitation dust particale, magnesium sulfate, magnesium sulfite wherein etc., simple sedimentation effect is unsatisfactory, extract the spray liquid circulate from the treatment tank rear portion out and still contain a large amount of dust particales, magnesium sulfate, magnesium sulfite etc., easily cause pipeline blockage, corrosion pipeline and nozzle, and decrease the clean-up effect etc. of flue gas; In addition, due to the magnesium hydroxide in spray liquid and sulfur dioxide generation chemical reaction, make the Ph value decrease of the spray liquid that flows out from the purifying column bottom, acid too high, while therefore at the treatment tank rear portion, supplementing appropriate magnesium hydroxide, also need further to add alkalies, further the Ph value of spray liquid is adjusted to and met the requirements, this has increased controlling unit and material cost undoubtedly.

Summary of the invention

The technical problems to be solved in the utility model is to provide a kind of circulating sprayer of boiler flue gas treatment system, and the circulating sprayer of this boiler flue gas treatment system can be avoided pipeline blockage, and can automatically regulate the Ph value, reduces cost of sewage disposal.The technical scheme that adopts is as follows:

a kind of circulating sprayer of boiler flue gas treatment system, comprise spray equipment, the spray liquid collecting pit, effluent outfall, the effluent cycle treatment pond, water pump and shower, the effluent cycle treatment pond is provided with circulation water inlet and circulating outlet, spray equipment is arranged on the top of spray liquid collecting pit, one end of effluent outfall is connected with the spray liquid collecting pit, the other end of effluent outfall is connected with the circulation water inlet, circulating outlet is connected with spray equipment by shower, water pump is arranged on shower, it is characterized in that: described effluent cycle treatment pond comprises sedimentation basin and filtering ponds, filtering ponds are arranged on the sedimentation basin rear, be provided with the cinder filtration layer in filtering ponds, described circulation water inlet arranges the top of sedimentation basin, and described circulating outlet is arranged on the rear portion of filtering ponds, the bottom of sedimentation basin also is provided with sewage draining exit.

Above-mentioned spray liquid collecting pit generally need not other setting, directly adopts the bottom of purifying column as the spray liquid collecting pit.

Be set to comprise sedimentation basin and filtering ponds by the effluent cycle treatment pond, wherein filtering ponds comprise the cinder filtration layer, when spray liquid was flowed through the cinder filtration layer, the cinder filtration layer played further filtration, utilized cinder after boiler fired coal combustion as filter course, refuse takes full advantage of, need not to buy special filter plant, reduced cost of sewage disposal, and good filtration effect, clean-up effect is more desirable, avoids pipeline blockage; And because the cinder after coal burning is alkalescence, play neutralization to being acid spray liquid, reduce the acidity of spray liquid, make back need not to add too much magnesium hydroxide or other alkalies and just can reach the Ph value requirement of spray liquid, avoid corroding pipeline and nozzle etc., further reduced cost of sewage disposal.

As preferred version of the present utility model, described sedimentation basin comprises the first sedimentation basin, the second sedimentation basin and the 3rd sedimentation basin, and the top of the first sedimentation basin, the second sedimentation basin and the 3rd sedimentation basin is connected successively.Sedimentation basin is divided into the first sedimentation basin, the second sedimentation basin and the 3rd sedimentation basin, spray liquid is cushioned, minute three grades of precipitations, in the spray liquid after precipitation, still less, sedimentation effect is better for contained particle.

As the further preferred version of the utility model, described spray equipment comprises at least two row's nozzles that set gradually from top to bottom.Spray equipment consists of many rows nozzle, has extended the time of contact of sulfur dioxide and spray liquid, makes the reaction of sulfur dioxide and magnesium hydroxide comparatively abundant, makes clean-up effect better.

As the utility model preferred version further, described spray equipment comprises three row's nozzles.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the utility model preferred embodiment.

The specific embodiment

Be described further below in conjunction with accompanying drawing and preferred embodiment of the present utility model.

As shown in Figure 1, the circulating sprayer of this boiler flue gas treatment system, comprise spray equipment 1, spray liquid collecting pit 2, effluent outfall 3, effluent cycle treatment pond 4, water pump 5 and shower 6; Effluent cycle treatment pond 4 is provided with circulation water inlet 7 and circulating outlet 8; Wherein spray liquid collecting pit 2 is the bottom of purifying column 9, and 1 of spray equipment is arranged in purifying column 9, and is in the top of purifying column 9 bottoms (spray liquid collecting pit 2), and spray equipment 1 comprises the three row's nozzles 101 that set gradually from top to bottom; One end of effluent outfall 3 is connected with purifying column 9 bottoms (spray liquid collecting pit 2), and the other end of effluent outfall 3 is connected with circulation water inlet 7, and circulating outlet 8 is connected with three row's nozzles 101 of spray equipment 1 by shower 6; Water pump 5 is arranged on shower 6; Effluent cycle treatment pond 4 comprises sedimentation basin 401 and filtering ponds 402, and filtering ponds 402 are arranged on sedimentation basin 401 rears, are provided with cinder filtration layer 403 in filtering ponds 402; Sedimentation basin 401 comprises that the top of the first sedimentation basin 4011, the second sedimentation basin 4012 and the 3rd sedimentation basin 4013, the first sedimentation basins 4011, the second sedimentation basin 4012 and the 3rd sedimentation basin 4013 is connected successively; Circulation water inlet 7 arranges the top of the first sedimentation basin 4011, and circulating outlet 8 is arranged on the rear portion of filtering ponds 402; The bottom of the first sedimentation basin 4011, the second sedimentation basin 4012 and the 3rd sedimentation basin 4013 also is equipped with sewage draining exit 10.

Spray liquid under spray equipment 1 sprays flows into effluent cycle treatment pond 4 by purifying column 9 bottoms through effluent outfall 3, successively through the first sedimentation basin 4011, the second sedimentation basin 4012, the 3rd sedimentation basin 4013, precipitate, then the flow through cinder filtration layer 403 of filtering ponds 402, extracted out by water pump 5 finally, through shower 6, by spray equipment 1, again sprayed.By effluent cycle treatment pond 4 being set to comprise sedimentation basin 401 and filtering ponds 402, wherein filtering ponds 402 comprise cinder filtration layer 403, when spray liquid was flowed through cinder filtration layer 403, cinder filtration layer 403 played further filtration, utilized cinder after boiler fired coal combustion as filter course 403, refuse takes full advantage of, need not to buy special filter plant, reduced cost of sewage disposal, and good filtration effect, clean-up effect is more desirable, avoids pipeline blockage; And because the cinder after coal burning is alkalescence, play neutralization to being acid spray liquid, reduce the acidity of spray liquid, make back need not to add too much magnesium hydroxide or other alkalies and just can reach the Ph value requirement of spray liquid, avoid corroding pipeline and nozzle etc., further reduced cost of sewage disposal.

In addition; need to prove, the specific embodiment described in this specification, its each several part titles etc. can be different; all equivalence or simple change of doing according to the described structure of the utility model patent design, feature and principle, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.

Claims (4)

1. the circulating sprayer of boiler flue gas treatment system, comprise spray equipment, the spray liquid collecting pit, effluent outfall, the effluent cycle treatment pond, water pump and shower, the effluent cycle treatment pond is provided with circulation water inlet and circulating outlet, spray equipment is arranged on the top of spray liquid collecting pit, one end of effluent outfall is connected with the spray liquid collecting pit, the other end of effluent outfall is connected with the circulation water inlet, circulating outlet is connected with spray equipment by shower, water pump is arranged on shower, it is characterized in that: described effluent cycle treatment pond comprises sedimentation basin and filtering ponds, filtering ponds are arranged on the sedimentation basin rear, be provided with the cinder filtration layer in filtering ponds, described circulation water inlet arranges the top of sedimentation basin, and described circulating outlet is arranged on the rear portion of filtering ponds, the bottom of sedimentation basin also is provided with sewage draining exit.
2. the circulating sprayer of boiler flue gas treatment system as claimed in claim 1, it is characterized in that: described sedimentation basin comprises the first sedimentation basin, the second sedimentation basin and the 3rd sedimentation basin, and the top of the first sedimentation basin, the second sedimentation basin and the 3rd sedimentation basin is connected successively.
3. the circulating sprayer of boiler flue gas treatment system as claimed in claim 1 or 2 is characterized in that: described spray equipment comprises at least two row's nozzles that set gradually from top to bottom.
4. the circulating sprayer of boiler flue gas treatment system as claimed in claim 3 is characterized in that: described spray equipment comprises three row's nozzles.
CN2013202654044U 2013-05-16 2013-05-16 Circulation spraying device of boiler flue gas treatment system CN203291661U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013202654044U CN203291661U (en) 2013-05-16 2013-05-16 Circulation spraying device of boiler flue gas treatment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013202654044U CN203291661U (en) 2013-05-16 2013-05-16 Circulation spraying device of boiler flue gas treatment system

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CN203291661U true CN203291661U (en) 2013-11-20

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103569929A (en) * 2013-11-21 2014-02-12 江苏亨通光电股份有限公司 Swirling type drainage device and method for reducing precipitate
CN103877813A (en) * 2014-03-27 2014-06-25 宜兴市意达铜业有限公司 Spraying recovery system of copper alloy production line
CN104841220A (en) * 2015-05-21 2015-08-19 苏州华乐大气污染控制科技发展有限公司 Gravity spraying washer for dusty gas
CN105195003A (en) * 2015-10-23 2015-12-30 宿州市皖神面制品有限公司 Desulfurization and denitrification dedusting device for boiler flue gas
CN107185361A (en) * 2017-06-16 2017-09-22 上海海事大学 A kind of flue gas recycled for marine main engine purifies cooling system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103569929A (en) * 2013-11-21 2014-02-12 江苏亨通光电股份有限公司 Swirling type drainage device and method for reducing precipitate
CN103569929B (en) * 2013-11-21 2015-07-15 江苏亨通光电股份有限公司 Swirling type drainage device and method for reducing precipitate
CN103877813A (en) * 2014-03-27 2014-06-25 宜兴市意达铜业有限公司 Spraying recovery system of copper alloy production line
CN104841220A (en) * 2015-05-21 2015-08-19 苏州华乐大气污染控制科技发展有限公司 Gravity spraying washer for dusty gas
CN105195003A (en) * 2015-10-23 2015-12-30 宿州市皖神面制品有限公司 Desulfurization and denitrification dedusting device for boiler flue gas
CN107185361A (en) * 2017-06-16 2017-09-22 上海海事大学 A kind of flue gas recycled for marine main engine purifies cooling system

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