CN205570079U - SOx/NOx control demercuration removes ultralow discharge system of micronic dust integration - Google Patents
SOx/NOx control demercuration removes ultralow discharge system of micronic dust integration Download PDFInfo
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Abstract
The utility model relates to a SOx/NOx control demercuration removes ultralow discharge system of micronic dust integration, belong to boiler flue gas processing system technical field, the utility model provides a design is simple, rationally, and low in investment, the SOx/NOx control demercuration removes ultralow discharge system of micronic dust integration that the running cost is low, the technical scheme who adopts is linked together for boiler flue gas and the air inlet that sprays the scattering tower, boiler induced -draft fan's air inlet is connected with ozone generator, the last liquid oxygen jar that is provided with of ozone generator, aqueous ammonia holding vessel is linked together through aqueous ammonia delivery pump and the thick liquid pond that sprays the scattering tower, the thick liquid pond that sprays the scattering tower is connected with plate and frame filter press through the ammonium salt excavating pump, plate and frame filter press's liquid outlet is connected with the oxidation crystallizer, be provided with oxidation air blower on the oxidation crystallizer, the discharge gate of oxidation crystallizer is connected with hydraulic cyclone through the ammonium salt delivery pump, hydraulic cyclone's discharge gate is connected with centrifugal dehydrator, the utility model discloses extensively be used for the SOx/NOx control demercuration to remove dust.
Description
Technical field
This utility model relates to a kind of desulfurization denitration demercuration and removes micronic dust integration minimum discharge system, belongs to boiler flue gas treatment system technical field.
Background technology
Along with the fast development of China's economy, the NO of discharged from coal-fired boilerxAnd SO2The most constantly increase, coal burning the SO discharged2Account for the 85% of total release, NOxAccounting for the 60% of total release, the two caused acid rain amount accounts for the 82% of total acid rainfall.Pointing out according to relevant research, China discharges SO every year2And NOxThe economic loss approximate number trillion yuan caused.
By us to the research of domestic conventional flue gases purification and understanding, substantially by absorbing or displacement, aoxidizing or reduce, filtering or the process such as absorption completes in each independent flue gas purification system such as flue gas desulfurization, denitration, demercuration and dedusting, in each independent flue gas purification system, often there is the phenomenon of cross reaction between each pollutant, such as: the process product Asia salt of desulfurization can carry out reduction and generate normal salt and N nitrogen oxides2；Nitrogen oxides is dissolved in desulfurization absorbing liquid, and sweetening process product sulphite can be had Oxidation to generate sulfate by its process product nitric acid or nitrite；Wet desulphurization is by removing smoke abatement further to the spray of flue gas or bathing；Chloride ion in desulfurization absorbing liquid and mercury ion react and can generate the mercury compound being dissolved in water；Mercury compound and sulfide react generation precipitate etc..Along with the enforcement of China's coal-fired plant flue gas minimum discharge standard, market being badly in need of a kind of technology simple, small investment, operating cost is low, and can reach the new technique of minimum discharge standard.
Utility model content
For solving the technical problem of prior art existence, this utility model provides a kind of design simply, rationally, small investment, and the desulfurization denitration demercuration that operating cost is low removes micronic dust integration minimum discharge system.
nullFor achieving the above object，The technical scheme that this utility model is used is that desulfurization denitration demercuration removes micronic dust integration minimum discharge system，Including: spray scattering tower，Boiler smoke is after electric cleaner dedusting，It is connected by the air inlet of boiler induced-draft fan with spray scattering tower，The gas outlet of spray scattering tower is connected with chimney，The air inlet of described boiler induced-draft fan connects ozonator，Liquid oxygen tank it is provided with on described ozonator，Ammonia holding vessel is connected by the slurry pool of ammonium hydroxide delivery pump with spray scattering tower，The slurry pool of spray scattering tower is connected with plate and frame type filter-press by ammonium salt excavationg pump，The liquid outlet of plate and frame type filter-press is connected with oxidizing and crystallizing tank，It is provided with oxidation fan on described oxidizing and crystallizing tank，The discharging opening of oxidizing and crystallizing tank is connected with hydrocyclone by ammonium salt delivery pump，The discharging opening of hydrocyclone is connected with centrifugal dehydrator.
Preferably, described spray scattering tower top is disposed with water dust scrubber and demister from the inside to the outside, and described water dust scrubber is connected with cyclic water tank by water circulating pump, and demister is connected with technique water tank by flush water pump.
Preferably, the bottom of described spray scattering tower is additionally provided with slurry circulating pump.
Preferably, the slurry pool that described hydrocyclone, the outlet of centrifugal dehydrator all scatter tower with spray is connected.
Compared with prior art, this utility model has following technical effect that this utility model utilizes ozone that the conversion of nitric oxide gas in flue gas is become high electricity price position nitrogen oxides, improve its dissolubility in water to the full extent, and utilize the product " sulphite " in flue gas desulfurization course and " alkaline absorbent " removing nitrogen oxides in effluent so that it is reach the requirement of minimum discharge standard；By to the appropriate trapping of chloride ion in flue gas, to improve the content of chloride ion in desulfurization absorbing liquid, make chloride ion and the abundant mass transfer of mercury ion in desulfurization absorbing liquid, generated the mercury compound being dissolved in water, be finally reached the purpose of demercuration.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
nullAs shown in Figure 1，Desulfurization denitration demercuration removes micronic dust integration minimum discharge system，Including: spray scattering tower 1，Boiler smoke is after electric cleaner 2 dedusting，It is connected by the air inlet of boiler induced-draft fan 3 with spray scattering tower 1，The gas outlet of spray scattering tower 1 is connected with chimney 4，The air inlet of boiler induced-draft fan 3 connects ozonator 5，Liquid oxygen tank 6 it is provided with on ozonator 5，Ammonia holding vessel 7 is connected by the slurry pool of ammonium hydroxide delivery pump 8 with spray scattering tower 1，The slurry pool of spray scattering tower 1 is connected with plate and frame type filter-press 10 by ammonium salt excavationg pump 9，The liquid outlet of plate and frame type filter-press 10 is connected with oxidizing and crystallizing tank 11，Oxidation fan 12 it is provided with on oxidizing and crystallizing tank 11，The discharging opening of oxidizing and crystallizing tank 11 is connected with hydrocyclone 14 by ammonium salt delivery pump 13，The discharging opening of hydrocyclone 14 is connected with centrifugal dehydrator 15，State hydrocyclone 14、The slurry pool that the outlet of centrifugal dehydrator 15 all scatters tower 1 with spray is connected.
In addition, spray scattering tower 1 top is disposed with water dust scrubber 16 and demister 17 from the inside to the outside, water dust scrubber 16 is connected with cyclic water tank 20 by water circulating pump 19, demister 17 is connected with technique water tank 18 by flush water pump 21, and the bottom of spray scattering tower 1 is additionally provided with slurry circulating pump 22.
In use, boiler smoke is after electric cleaner carries out primary dedusting, under the effect of boiler induced-draft fan, and the ozone that ozonator is produced and boiler smoke mixing, it is blown into entrance spray scattering tower, under the effect of ozone, make the conversion of nitric oxide gas in flue gas become high electricity price position nitrogen oxides, improve high electricity price position nitrogen oxides dissolubility in water, ammonia enters spray scattering tower by ammonium hydroxide delivery pump, ammonia and reaction of nitrogen oxides, generate ammonium nitrate, reached denitration；By to the appropriate trapping of chloride ion in flue gas, to improve the content of chloride ion in desulfurization absorbing liquid, make chloride ion and the abundant mass transfer of mercury ion in desulfurization absorbing liquid, generated the mercury compound being dissolved in water, be finally reached the purpose of demercuration；Precipitate is delivered to plate and frame type filter-press through the defeated excavationg pump of ammonium salt and carries out primary dewatering, is then carrying out crystallization treatment through oxidizing and crystallizing tank, settlement separate finally by hydrocyclone, discharges after centrifugal dehydrator is dehydrated.
Flue gas is carrying out desulfurization process by spray scattering tower, entered water dust scrubber successively and after demister carries out dust removal process, and was discharged by chimney, and the flue gas of discharge fully meets discharge standard.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, in the range of all should wrapping in this utility model.
Claims (4)
1. desulfurization denitration demercuration removes micronic dust integration minimum discharge system, including: spray scattering tower, boiler smoke is after electric cleaner dedusting, it is connected by the air inlet of boiler induced-draft fan with spray scattering tower, the gas outlet of spray scattering tower is connected with chimney, it is characterized in that: the air inlet of described boiler induced-draft fan connects ozonator, liquid oxygen tank it is provided with on described ozonator, ammonia holding vessel is connected by the slurry pool of ammonium hydroxide delivery pump with spray scattering tower, the slurry pool of spray scattering tower is connected with plate and frame type filter-press by ammonium salt excavationg pump, the liquid outlet of plate and frame type filter-press is connected with oxidizing and crystallizing tank, it is provided with oxidation fan on described oxidizing and crystallizing tank, the discharging opening of oxidizing and crystallizing tank is connected with hydrocyclone by ammonium salt delivery pump, the discharging opening of hydrocyclone is connected with centrifugal dehydrator.
Desulfurization denitration demercuration the most according to claim 1 removes micronic dust integration minimum discharge system, it is characterized in that: described spray scattering tower top is disposed with water dust scrubber and demister from the inside to the outside, described water dust scrubber is connected with cyclic water tank by water circulating pump, and demister is connected with technique water tank by flush water pump.
Desulfurization denitration demercuration the most according to claim 1 removes micronic dust integration minimum discharge system, it is characterised in that: the bottom of described spray scattering tower is additionally provided with slurry circulating pump.
Desulfurization denitration demercuration the most according to claim 1 removes micronic dust integration minimum discharge system, it is characterised in that: the slurry pool that described hydrocyclone, the outlet of centrifugal dehydrator all scatter tower with spray is connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620262990.0U CN205570079U (en) | 2016-03-31 | 2016-03-31 | SOx/NOx control demercuration removes ultralow discharge system of micronic dust integration |
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| CN201620262990.0U CN205570079U (en) | 2016-03-31 | 2016-03-31 | SOx/NOx control demercuration removes ultralow discharge system of micronic dust integration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107998859A (en) * | 2017-12-21 | 2018-05-08 | 双盾环境科技有限公司 | A kind of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration |
| CN108404654A (en) * | 2018-04-02 | 2018-08-17 | 中山市天乙能源有限公司 | A kind of garbage incinerating power plant flue gas purification system |
| CN110237641A (en) * | 2019-07-17 | 2019-09-17 | 邢台旭阳化工有限公司 | Benzoic anhydride tail-gas cleaning treatment system and benzoic anhydride tail-gas purifying treatment method |
-
2016
- 2016-03-31 CN CN201620262990.0U patent/CN205570079U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107998859A (en) * | 2017-12-21 | 2018-05-08 | 双盾环境科技有限公司 | A kind of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration |
| CN108404654A (en) * | 2018-04-02 | 2018-08-17 | 中山市天乙能源有限公司 | A kind of garbage incinerating power plant flue gas purification system |
| CN110237641A (en) * | 2019-07-17 | 2019-09-17 | 邢台旭阳化工有限公司 | Benzoic anhydride tail-gas cleaning treatment system and benzoic anhydride tail-gas purifying treatment method |
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