CN207287113U - Desulfurization and dedusting denitrification integral high-efficient purification tower - Google Patents

Desulfurization and dedusting denitrification integral high-efficient purification tower Download PDF

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Publication number
CN207287113U
CN207287113U CN201721130429.8U CN201721130429U CN207287113U CN 207287113 U CN207287113 U CN 207287113U CN 201721130429 U CN201721130429 U CN 201721130429U CN 207287113 U CN207287113 U CN 207287113U
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CN
China
Prior art keywords
desulfurization
purification tower
efficient purification
spray
flue gas
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Expired - Fee Related
Application number
CN201721130429.8U
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Chinese (zh)
Inventor
张全章
刘述平
蔡富良
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Guangdong Zhongxing Technology Co Ltd
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Guangdong Zhongxing Technology Co Ltd
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Priority to CN201721130429.8U priority Critical patent/CN207287113U/en
Application granted granted Critical
Publication of CN207287113U publication Critical patent/CN207287113U/en
Expired - Fee Related legal-status Critical Current
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Abstract

It the utility model is related to a kind of desulfurization and dedusting denitrification integral high-efficient purification tower, including air inlet, electrostatic precipitator, bag filter, desulphurization denitration spray column, demister, flue gas enters the electrostatic precipitator from the air inlet, the dust of bulky grain is removed under the action of electric field, enter the bag filter afterwards, short grained dust is removed under the action of filter bag, pass through the desulphurization denitration spray column again, the sulfide in flue gas, nitride are removed under the action of absorbing liquid, last clean flue gas is exported from spray column discharges.Desulfurization and dedusting denitrification integral high-efficient purification tower provided by the utility model, can realize the purpose of desulfurization, dedusting, denitration at the same time, have good clean-up effect to flue gas.

Description

Desulfurization and dedusting denitrification integral high-efficient purification tower
Technical field
Fume treatment field is the utility model is related to, more particularly to a kind of desulfurization and dedusting denitrification integral high-efficient purification tower.
Background technology
The energy resource structure in China is based on coal.At present, coal accounts for 70% or so of primary energy total flow, it was predicted that Until the year two thousand fifty, proportion of the coal in China's primary energy demand is still up to 65% or so, in the coal of exploitation, More than 80% is used to burn, and the burning of a large amount of coals utilizes, and causes serious environmental problem, in these problems, fire coal draws The sulfur dioxide and Acid Rain Pollution risen affects the development of Chinese national economy, endangers the health of the people, and to China Natural, ecological cause serious destruction, therefore, reduce the discharge capacity of coal contaminants, control sulfur dioxide and nitrogen oxides Pollution, be the current and following important topic that quite China environmental protection field must face in long-term.At present, in the world It is bag-type dusting respectively to control boiler smoke dust (particularly pellet), NOx and the most effectual way of SO2 discharges Device, ammine selectivity catalytic reduction method (SCR) and lime or limestone wet desulfurization.But the cigarette that these three links are together in series Gas purification technique, because equipment flowsheet is grown, investment and operating cost are high, so also facing very big economic pressure when promoting and applying Power.In addition more and more harsher with the requirement of environmental regulation, the control to coal-burning power plant's pollutant is increasingly stringent.Cause to fire coal Power plant takes single desulphurization and denitration either dust collecting process far can not reach and meet environmentally friendly requirement.Therefore The research of flue gas desulfurization denitration dust-removing integrated technology is subject to domestic and international most attention in recent years, also becomes ring in recent years The research hotspot in guarantor field.
Utility model content
In view of the defects existing in the prior art, the technical problem to be solved by the utility model is to provide a kind of desulfurization to remove Dirt denitrification integral high-efficient purification tower, can realize the purpose of desulfurization, dedusting, denitration at the same time, have good purification to flue gas Effect.
In order to solve the above technical problems, the technical scheme adopted by the utility model is that:
A kind of desulfurization and dedusting denitrification integral high-efficient purification tower, including it is air inlet, electrostatic precipitator, bag filter, de- Sulphur denitration spray column, demister, flue gas enter the electrostatic precipitator from the air inlet, big are removed under the action of electric field The dust of grain, afterwards into the bag filter, removes short grained dust under the action of filter bag, then by the desulfurization Denitration spray column, removes the sulfide in flue gas, nitride under the action of absorbing liquid, and last clean flue gas is from spray column Outlet discharge, the air inlet are equipped with airflow-distribution board, aperture are provided with the airflow-distribution board, and the electrostatic precipitator includes Corona polar line and dust collecting pole plate, the bag filter include filter bag and card, and the desulphurization denitration spray column, which includes spray, to be led Pipe, spray branch pipe, nozzle connecting tube and nozzle,
Further, the absorbing liquid is ammonium hydroxide.
Further, the airflow-distribution board is set to two pieces, is respectively front and rear panels.
Further, the aperture opened up in the foreboard and the back plate is square hole, and the preceding packing free ratio is 30%, institute Rear packing free ratio is stated as 40%.
Further, the corona polar line is arranged to RS corona polar lines, and the dust collecting pole plate is arranged to c-type dust collecting pole plate.
Further, the spray branch pipe is installed on the both sides of the spray supervisor, the spray supervisor using sunk type Flanged joint is used between the spray branch pipe, the nozzle is arranged to hollow cone tangent type nozzle, and material is managed for FRP, thickness For 4.4mm, the nozzle is in meshy arrangement.
Further, the demister includes two-stage demister blade, is respectively first order demister blade and the second level Demister blade, the first order demister blade pitgh are 38mm, and the second level demister blade pitgh is 26mm.
The beneficial effects of the utility model are, flue gas is entered electrostatic precipitator first, are removed under the action of electric field The dust of bulky grain, afterwards into bag filter, removes short grained dust under the action of filter bag, by electrostatic precipitator and Bag filter is used in combination, and the advantages of taking full advantage of two kinds of dedusters, dust removing effects are more preferable.Taken off using ammonium hydroxide as desulfurization The absorbing liquid of nitre spray column, denitrification efficiency is high, reaction speed is fast, ammonium hydroxide utilization rate is high, and product can return after reaction Receive and recycle.
Brief description of the drawings
Fig. 1 is the process flow chart of the utility model desulfurization and dedusting denitrification integral high-efficient purification tower.
Fig. 2 is the schematic diagram of the utility model desulfurization and dedusting denitrification integral high-efficient purification tower air inlet.
Fig. 3 is the schematic diagram of the utility model desulfurization and dedusting denitrification integral high-efficient purification tower spray tube.
Wherein, reference numeral implication is as follows:
1 foreboard of air inlet, 11 back plate 12
21 22 nozzle connecting tube of spray branch pipe of the spray of spray tube 2 supervisor, 23 nozzle 24
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is used to illustrate the utility model, but is not intended to limit the scope of the present invention.
The present invention provides a kind of desulfurization and dedusting denitrification integral high-efficient purification tower, including air inlet 1, electrostatic precipitator, cloth Bag dust collector, desulphurization denitration spray column, demister, flue gas enter electrostatic precipitator from air inlet 1, are removed under the action of electric field The dust of bulky grain, afterwards into bag filter, removes short grained dust under the action of filter bag, then by desulphurization denitration Spray column, removes the sulfide in flue gas, nitride under the action of absorbing liquid, and last clean flue gas is exported from spray column Discharge.
The absorbing liquid of desulphurization denitration spray column uses ammonium hydroxide, is due to that the denitrification efficiency of ammonium hydroxide is high, and reaction speed is fast, Ammonium hydroxide utilization rate is high, and ammonium hydroxide consumption is slow, cheap, non-secondary pollution, and the product after reaction can be one with recycling The desulfurization denitration method that kind is widely used.The specific chemical equation of Ammonia Process simultaneous SO_2 and NO removal is as follows:
Ammonia process of desulfurization principle is:
2NH3+H2O+SO2=(NH4)2SO3
(NH4)2SO3+H2O+SO2=2 (NH4)H SO3
Ammonia-method denitration principle is:
4(NH4)2SO3+2NO2=4 (NH4)2SO4+N2
4(NH4)H SO3+2NO2=4 (NH4)H SO4+N2
2(NH4)2SO3+ 2NO=2 (NH4)2SO4+N2
The byproduct of generation:
2(NH4)2SO3+O2=2 (NH4)2SO4
Byproduct mainly produced in the slurry pool of spray column, it crystallize after ammonium sulfate be ammonification fertilizer it is main into Point.
Air inlet 1 is designed with airflow-distribution board, and the main function of airflow-distribution board is that flue gas is shunted, make flue gas into Reach required rate request before entering electrostatic precipitation.When the airflow-distribution board of gas inlet sets two pieces, velocity of flue gas declines Faster, it is more preferable in the uniformity of whole electrostatic fabric filter medium velocity, therefore the airflow-distribution board of gas inlet sets two pieces, point Wei not foreboard 11 and back plate 12.Aperture is provided with airflow-distribution board, for circular hole, flue gas is passing through square hole speed meeting Speed during than coming in is slow, and the trend successively decreased is presented in speed, can reach more preferable shunting function, therefore airflow-distribution board On aperture be arranged to square hole.Percent opening on airflow-distribution board also has an impact shunting effect, air-flow point in the utility model 11 percent opening of foreboard of fabric swatch is set to 30%, and 12 percent opening of back plate is set to 40%, which enables flue gas to meet electricity well The rate request of field.
Electrostatic precipitator includes corona polar line and dust collecting pole plate, since the corona effects of RS corona polar lines are good, required voltage It is low, therefore corona polar line is arranged to RS corona polar lines.Dust collecting pole plate is arranged to c-type dust collecting pole plate, and chief reason is due to c-type The specific collection area of dust collecting pole plate is big, simple in structure, is easily installed and cleans.The main function of electrostatic precipitator is to pass through corona discharge electrode Electric field is produced, gas ionization is produced into negative ions, the dust collision in anion and flue gas makes dust negatively charged, grey afterwards Dirt is absorbed by dust collecting pole plate, achievees the purpose that dedusting.
Bag filter includes filter bag and card.By small in filtration removing flue gas when the effect of cloth bag is main Dust.Its dust removal process is:There is no any obstacle during beginning, between cloth bag and flue gas, after flue gas is directly through cloth bag, totally Gas discharged inside cloth bag through air-purifying chamber, dust rests on the outside of cloth bag unit, and over time, dust is in cloth Bag unit is cumulative, and ash-laden gas will first pass through the dust film being made of dust and could be contacted with cloth bag unit, and dust film exists Play the role of filtering dust at this time.
The main function of spray tube 2 is exactly that will absorb the next absorbing liquid of fluid circulation conveying to be sent in nozzle 24, is sprayed First 24 again spray absorbing liquid the reaction that desulphurization denitration is carried out with flue gas.In order to reach this purpose, spray tube 2, which includes spray, to be led Pipe 21, spray branch pipe 22, nozzle connecting tube 23 and nozzle 24.The nozzle 24 of spray tube 2 is designed to hollow cone tangent type nozzle, material Expect to manage for FRP, thickness 4.4mm, nozzle 24 is in meshy arrangement, and this arrangement can be with maximum capacity by spray column inner space All coverings, spray branch pipe 22 is installed on the both sides of spray supervisor using sunk type, between spray supervisor 21 and spray branch pipe 22 Use flanged joint.
The main function of demister is the moisture trapped after desulphurization denitration in clean flue gas, reduces the humidity of flue gas, to the greatest extent may be used Equipment is protected from corroding and staining in energy ground.In order to reach more preferable defogging effect, demister sets 2 layers of demister blade, the Level-one demister blade pitgh leads to 38mm, and second level blade pitgh is 26mm.According to the disclosure and teachings of the above specification, this reality Can also be to the above embodiment make a change and modification with new those skilled in the art.Therefore, the utility model is simultaneously Embodiment disclosed and described above is not limited to, some modifications and changes of the utility model should also be as falling into this In the scope of the claims of utility model.In addition, although used some specific terms in this specification, but these Term merely for convenience of description, does not form any restrictions to the utility model.

Claims (7)

  1. A kind of 1. desulfurization and dedusting denitrification integral high-efficient purification tower, it is characterised in that:
    Including air inlet, electrostatic precipitator, bag filter, desulphurization denitration spray column, demister, flue gas from the air inlet into Enter the electrostatic precipitator, the dust of bulky grain is removed under the action of electric field, afterwards into the bag filter, in filter bag Under the action of remove short grained dust, then by the desulphurization denitration spray column, by flue gas under the action of absorbing liquid Sulfide, nitride remove, and last clean flue gas is exported from spray column discharges, and the air inlet is equipped with airflow-distribution board, institute State and aperture is provided with airflow-distribution board, the electrostatic precipitator includes corona polar line and dust collecting pole plate, the bag filter bag Filter bag and card are included, the desulphurization denitration spray column includes spray supervisor, spray branch pipe, nozzle connecting tube and nozzle.
  2. 2. desulfurization and dedusting denitrification integral high-efficient purification tower as claimed in claim 1, it is characterised in that:
    The absorbing liquid is ammonium hydroxide.
  3. 3. desulfurization and dedusting denitrification integral high-efficient purification tower as claimed in claim 1, it is characterised in that:
    The airflow-distribution board is set to two pieces, is respectively front and rear panels.
  4. 4. desulfurization and dedusting denitrification integral high-efficient purification tower as claimed in claim 3, it is characterised in that:
    The aperture opened up on the foreboard and the back plate is square hole, and the preceding packing free ratio is 30%, the rear packing free ratio For 40%.
  5. 5. desulfurization and dedusting denitrification integral high-efficient purification tower as claimed in claim 1, it is characterised in that:
    The corona polar line is arranged to RS corona polar lines, and the dust collecting pole plate is arranged to c-type dust collecting pole plate.
  6. 6. desulfurization and dedusting denitrification integral high-efficient purification tower as claimed in claim 1, it is characterised in that:
    The spray branch pipe is installed on the both sides of the spray supervisor, the spray supervisor and the spray branch pipe using sunk type Between use flanged joint, the nozzle is arranged to hollow cone tangent type nozzle, and material is FRP pipes, thickness 4.4mm, the spray Head is in meshy arrangement.
  7. 7. desulfurization and dedusting denitrification integral high-efficient purification tower as claimed in claim 1, it is characterised in that:
    The demister includes two-stage demister blade, respectively first order demister blade and second level demister blade, institute It is 38mm to state first order demister blade pitgh, and the second level demister blade pitgh is 26mm.
CN201721130429.8U 2017-09-05 2017-09-05 Desulfurization and dedusting denitrification integral high-efficient purification tower Expired - Fee Related CN207287113U (en)

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CN201721130429.8U CN207287113U (en) 2017-09-05 2017-09-05 Desulfurization and dedusting denitrification integral high-efficient purification tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721130429.8U CN207287113U (en) 2017-09-05 2017-09-05 Desulfurization and dedusting denitrification integral high-efficient purification tower

Publications (1)

Publication Number Publication Date
CN207287113U true CN207287113U (en) 2018-05-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108722094A (en) * 2018-08-01 2018-11-02 南京龙源环保有限公司 A kind of final dusting equipment for detaching fine particle dust in tail gas
CN111495151A (en) * 2020-04-26 2020-08-07 安徽顺达环保科技股份有限公司 Wet electric dust removal integrated linkage control desulfurization and denitrification tower and control method thereof
CN115845601A (en) * 2023-02-28 2023-03-28 烟台恒海环境科技有限公司 Energy-saving and environment-friendly device for desulfurization and denitrification of flue gas of industrial boiler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108722094A (en) * 2018-08-01 2018-11-02 南京龙源环保有限公司 A kind of final dusting equipment for detaching fine particle dust in tail gas
CN111495151A (en) * 2020-04-26 2020-08-07 安徽顺达环保科技股份有限公司 Wet electric dust removal integrated linkage control desulfurization and denitrification tower and control method thereof
CN115845601A (en) * 2023-02-28 2023-03-28 烟台恒海环境科技有限公司 Energy-saving and environment-friendly device for desulfurization and denitrification of flue gas of industrial boiler

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Granted publication date: 20180501