CN206793392U - Ammonia process of desulfurization denitrification integral process processing system - Google Patents
Ammonia process of desulfurization denitrification integral process processing system Download PDFInfo
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- CN206793392U CN206793392U CN201720455711.7U CN201720455711U CN206793392U CN 206793392 U CN206793392 U CN 206793392U CN 201720455711 U CN201720455711 U CN 201720455711U CN 206793392 U CN206793392 U CN 206793392U
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- processing system
- ammonia
- slurries
- flue gas
- slurry tank
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The utility model discloses a kind of ammonia process of desulfurization denitrification integral process processing system, it is mainly aoxidized concentration systems, air treatment system, finished product processing system etc. and formed by flue gas purification system, ammonia feed system, ozone supply system, slurries, and it can realize the SO in high efficiency purifying smoke2,NO,NO2SO3, sulphur and the ammonium sulfate of nitrogen oxides resource generation high-quality in recovered flue gas.Ammoniacal liquor is passed through in the slurry tank of absorption tower bottom by ammonia feed system, the flue gases duct on absorption tower described in the ozone pipeline communication of ozone supply system, and high temperature air is sent into concentration tower by air treatment system, (NH in the slurries of absorption tower lower slurry groove4)2SO3(NH4)2SO4Content be continuously increased, open the first slurries pump and be sent into slurries in the slurry tank of concentration tower bottom, absorption tower is as ammonium sulfite desulfurizing and denitrifying process section, and concentration tower is as oxidation technology section, then the ammonium sulfate by finished product processing system acquisition high-quality.
Description
Technical field
The utility model belongs to environmental protection technical field, more particularly to one kind makees absorbent come purification coal-burning boiler with ammonia
SO in flue gas2,SO3,NOXDeng pernicious gas, and by the SO in flue gas2,SO3,NOXHigh-quality sulphur is produced as resource reclaim
The integral process processing system of sour ammonium.
Background technology
SO in fire coal boiler fume2,SO3,NOXSerious pollution is caused to the environment in China, had a strong impact on
The life of people and health, very big loss is caused to national economy.It is continuous strong with legislative work for protecting environment and law enforcement dynamics
Change, objectively urgent need purification efficiency is higher, and process system simple operation cost is low, low energy consumption, is adapted to the flue gas of China's national situation net
Change technical matters system and equipment.Improved by the continuous research experiment and practical application of decades and propose this practicality finally newly
Type.
Utility model content
A kind of ammonia process of desulfurization denitrification integral process processing system is provided, it makees absorbent come high efficiency purifying smoke with ammonia
In SO2, with the NO, NO in the ammonium sulfite removing flue gas of desulfurization generation2,SO3Pernicious gas, to greatest extent recovered flue gas
In SO2,SO3,NOXResource, the integral process system of the ammonium sulfate of output high-quality.
This ammonia process of desulfurization denitrification integral process processing system is mainly supplied by flue gas purification system, ammonia feed system, ozone
To compositions such as system, slurries oxidation concentration systems, air treatment system, finished product processing systems.Realize high efficiency purifying smoke
In SO2,NO,NO2SO3, sulphur and the ammonium sulfate of nitrogen oxides resource generation high-quality in recovered flue gas.
The technical scheme of the application is：A kind of ammonia process of desulfurization denitrification integral process processing system, it includes gas cleaning
System, ammonia feed system, ozone supply system, slurries oxidation concentration systems, air treatment system, finished product processing system；
The flue gas purification system include absorption tower 3, the first slurry tank 3-1, clean-up stage, the first serum recycle system 3-4,
Purification 3-2；
The slurries oxidation concentration systems include concentration tower, the second serum recycle system 4-2, and the absorption tower top is equipped with
First demister 3-3；
The first slurry tank slurry surface to space between first demister is clean-up stage, and the clean-up stage is provided with
Purification, the purification connect the first serum recycle system entry and connect the first slurry tank；
Ammoniacal liquor is passed through in the first slurry tank of absorption tower bottom by the ammonia feed system；
The flue gases duct on absorption tower, the flue gases duct lead to institute described in the ozone pipeline communication of the ozone supply system
State clean-up stage；
First slurry tank is connected by the first slurries pump in the second slurry tank 4-1 of concentration tower bottom, the second slurries
Groove connects the purification in concentration tower by the second serum recycle system, and the second slurry tank connects production eventually by the second slurries pump
Product processing system；
High temperature air is sent into described concentration tower by the air treatment system.
Further, described ammonia feed system includes ammonia preparation facilities 1, pump and pipeline valve.
Further, described ozone supply system includes ozone preparation facilities 2, pipeline and valve.
Further, described purification top is provided with spray pipe network.
Further, described flue gas purification system also includes gas approach, neat stress outlet and flue, coal-burning boiler
Flue gas enters the gas approach of described flue gas purification system through high-effective dust-removing.
Further, the concentration tower top is also equipped with the second demister 4-3.
Further, connection blast pipe at the top of the concentration tower, the concentration tower side wall connection air-handling chamber.
Further, the air treatment system includes air-handling chamber 5, air heater, blower fan, pipeline and valve.
Further, the finished product processing system include being sequentially connected 6, centrifuge 7, drying machine 8 and packing machine 9.
Further, space is accommodated in the absorption tower as ammonium sulfite-desulfurizing and denitrifying process section；Described concentration
Second slurry tank of tower accommodates oxidation technology section of the space as sulfite oxidation into ammonium sulfate.
The purpose of this utility model is exactly to absorb the SO in flue gas by the use of ammonia as absorbent, high efficiency2, and utilize its generation
(NH4)2SO3To absorb the NO in flue gas, NO2,SO3Deng pernicious gas, and the SO in recovered flue gas to greatest extent2, NOXMoney
The ammonium sulfate of source output high-quality.
The beneficial effects of the utility model are compared with prior art：
1st, the utility model is to utilize NH3Absorb the SO in flue gas2, (the NH of generation4)2SO3Cigarette is absorbed as denitrfying agent
NO in gas, NOXAnd SO3.The utility model SO2Removal efficiency can stably reach more than 99%, NOXRemoval efficiency reach
More than 95%, can qualified discharge steady in a long-term, there is good social benefit.
2nd, the SO that this integral process processing system can to greatest extent in recovered flue gas2, NOXResource, final products are
(NH4)2SO4Turn waste into wealth, the work of gas cleaning is incorporated into the track of recycling economy.Enterprise is by selling (NH4)2SO4's
Take in offset operating cost, there is good economic benefit.
3rd, the utility model focuses on the desulfurization of flue gas and denitration with One function section, simplifies gas cleaning system
System, reduces the height on absorption tower, reduces liquid-gas ratio etc., can effectively reduce construction costs, floor space and running cost.
4、(NH4)2SO3Absorb NO, NO2, SO3Efficiency with the (NH in slurries4)2SO3Increasing for concentration and increase.It is smelly
The dosage of oxygen is with (NH in slurries4)2SO3Concentration increase and reduce, as (NH4)2SO3, can be direct when reaching finite concentration
NO in flue gas is removed, without putting into ozone again, cleaning system remains to stably reaching standard discharge, further reduces running cost.
5th, the utility model is not only adapted to low-sulfur coal to the sulfur of boiler fired coal by very strong adaptability, medium sulphur coal, more
It is adapted to sulphur coal.The denitration efficiency of this integral process system, social benefit, and economic benefit, all with coal-fired sulfur content
Increase and rise.A set of new technological system is added for the purification of China's burning high sulfur coal flue gas.
6、NH3Wide material sources, do not destroy natural ecological environment, not output waste water and useless during this integral system normal operation
Slag, it is free from environmental pollution.
Brief description of the drawings
Fig. 1 is the structural representation of ammonia process of desulfurization denitrification integral process processing system of the present utility model.
In figure：1 ammonia preparation facilities；2 ozone preparation facilities；3 absorption towers；3-1 first slurry tank；3-2 purifications；
3-3 first demisters；3-4 first serum recycle systems；4 concentration towers；4-1 second slurry tank；4-2 second serum recycle systems
System；4-3 second demisters；4-4, blast pipe；5 air-handling chambers；6 cyclone separators；7 centrifuges；8 drying machines；9 packagings
Machine；10 chimneys.
Embodiment
The technical characteristics of the utility model, cleaning principle and technique are further appreciated that for the ease of the relevant personnel of this area
Method, specific embodiment of the present utility model is further illustrated in conjunction with Figure of description.
Ammonia process of desulfurization denitrification integral process processing system provided by the utility model, mainly by flue gas purification system, ammonia
Feed system, ozone supply system, slurries oxidation concentration systems, air-treatment feed system, finished product processing system composition.
The flue gas purification system mainly includes：Absorption tower, former flue gas neat stress import and export flue, demister, absorption tower
Lower slurry groove, slurry circulating pump, slurries official website nozzle and valve etc..
Ammonia feed system includes ammonia preparation facilities and what is connected with the absorption tower bottom supplies ammonia pipeline and valve etc..
Ozone supply system includes ozone preparation facilities and pipe network, nozzle, valve for connecting former flue gases duct etc..
Slurries oxidation concentration systems are mainly by concentration tower, the second demister, the second slurry tank of concentration tower bottom, the second slurry
Liquid circulating pump, slurries supply lines valve and nozzle, air ports, airduct and from the first slurry tank of absorption tower bottom to concentration tower
First slurries pump, pipeline and valve, air discharge duct for slurries etc. form.
Air-treatment feed system include blower fan, air-handling chamber, air heater, heat supply pipeline and valve and with concentration
Air-supply tube valve of tower connection etc..
Finished product processing system includes eddy flow current divider, centrifuge, drying machine, packing machine etc..The slurries of the cyclone
It is sent into by concentration tower slurry tank through slurries pump, pipe network and valve, it pushes up flow liquid and centrifuge underflow liquid returns to thickener.
In a preferred embodiment, ammonia feed system is by liquefied ammonia-ammonia preparation device, technique water system and pump, pipe
Road valve etc. forms.The system is that the ammoniacal liquor that will be prepared is sent into the slurry tank of the absorption tower bottom on demand, to meet
Remove SO in flue gas2,NO,NO2,SO3Needs.
In a preferred embodiment, ozone supply system is mainly by ozone preparation facilities and the pipe for connecting former flue gases duct
Net, nozzle, valve etc. form.The system is that the ozone that will be prepared is sent into the NO oxygen in former flue gas in former flue gases duct on demand
It is melted into NO2。
In a preferred embodiment, absorption tower top is equipped with the first demister, from the first slurry tank slurry surface to
One this section of demister space is the clean-up stage on absorption tower.The first serum recycle system is mainly by the first slurry circulating pump, spray
Shower pipe net, valve etc. form.Slurries in first slurry tank are sent to the clean-up stage on absorption tower by the first serum recycle pumped
Spray pipe network, sprayed by nozzle, fabulous contact and mixing condition are created with flue gas for slurries in clean-up stage, flue gas passes through
Clean-up stage etc. is absorbed by slurries, and the flue gas after purification is discharged into air after demister removes fine drop through net flue stack.Slurry
Returned after purified section of liquid in slurry tank.
In a preferred embodiment, slurries oxidation concentration systems are made up of concentration tower, the second serum recycle system.It is described
Concentration tower bottom is the second slurry tank, and middle part includes spray pipe network, nozzle for oxidation enriching section；Air treatment system includes air
Inlet and outlet, airduct etc..The second serum recycle system includes slurry circulating pump and connects pipeline valve of spray pipe network etc..Institute
Air treatment system is stated mainly to be made up of blower fan, air-handling chamber, air heater, air-supply and exhaust duct etc..Air-treatment
The effect of system is exactly to be sent into the (NH in slurries after outdoor air heat temperature raising in concentration tower4)2SO3It is oxidized to (NH4)2SOr, while slurries are evaporated with concentration.
In a preferred embodiment, finished product processing system mainly includes cyclone separator, centrifuge, drying machine, bag
Install and the pipeline valve that is connected etc., the effect of the system be exactly the supersaturated slurries that concentration tower comes out further are concentrated,
Separate, heat, evaporating the crystal product that final output moisture content is less than 1%.
The flue gas come out by coal-burning boiler enters in the absorption tower after high-effective dust-removing, in the efficient mass transfer field of clean-up stage
In for flue gas and slurries create fabulous contact, mixing condition, the SO in flue gas2,NO,NO2,SO3Etc. being removed, after purification
Flue gas through net flue, chimney be discharged into air after demister removes fine drop.
The process that flue gas purifies in the absorption tower：SO first in flue gas2With NH3Reaction generation (NH4)2SO3.Research
(NH is proved with test4)2SO3To the NO in flue gas, NO2,SO3Deng there is a very strong removing ability, (NH is generated4)2SO4.It is and de-
Except efficiency is with (NH in slurries4)2SO3The increase of concentration and rise, as (NH in slurries4)2SO3After reaching certain concentration, flue gas
In NO by by (the NH in slurries4)2SO3Directly remove, the only (NH in slurries4)2SO3When concentration is relatively low or discharge standard
It is required that just needing to open ozone supply system in the case of more strict, part NO is first oxidized to NO2Afterwards again by slurries
(NH4)2SO3And H2O is removed.
With flue gas purification system, the continuous operation of ammonia feed system, ozone supply system, the SO in flue gas2Constantly with
NH3React and be continuously generated (NH4)2SO3, (NH simultaneously4)2SO3With the NO in flue gas, NO2,SO3Generated Deng generation chemical reaction
(NH4)2SO4, reach the purpose of continuous high-efficient purifying smoke.
With the continuous operation of system, (NH in the slurries of the slurry tank of absorption tower bottom first4)2SO3(NH4)2SO4
Content be continuously increased, after the parameter of slurries reaches design requirement, open the first slurries pump slurries are sent into by pipeline it is dense
In second slurry tank of contracting tower bottom.
Slurries are sprayed by spray pipe network nozzle in concentration tower, are contacted with the high temperature air mixing from air treatment system
Mass transfer exchange is carried out, (the NH in slurries4)2SO3(NH is oxidized to by hot-air4)2SO4, while the moisture in slurries is constantly steamed
Hair, slurries are constantly concentrated into hypersaturated state, a large amount of (NH4)2SO4Crystal separates out.When the parameter of concentrated slurry reaches design ginseng
After number, open slurries pump and oversaturated ammonium sulfate slurries are sent in the finished product processing system by pipeline, slurries pass through
Cyclonic separator carries out the solid primary separation of liquid, and the high underflow liquid of solid content is sent into further concentrating and separating in centrifuge, will
Drying machine is sent into by ammonium sulfate of the moisture content that centrifuge comes out less than 5% processing is dried, will be aqueous after drying process
Ammonium sulfate of the rate less than 1% is sent into storehouse after being sent into packing machine packaging.The top flow liquid of cyclone and the underflow liquid of centrifuge return
Continue to concentrate in the concentration tower.
Finally it should be noted that:Above example is only illustrating the technical scheme of this case rather than its limitations；Although
This case is described in detail with reference to preferred embodiment, those of ordinary skills in the art should understand that：Still can be with
The embodiment of this case is modified or equivalent substitution is carried out to some technical characteristics；Without departing from this case technical side
The spirit of case, it all should cover among the claimed technical scheme scope of this case.
Claims (10)
1. a kind of ammonia process of desulfurization denitrification integral process processing system, it is characterised in that including flue gas purification system, ammonia supply system
System, ozone supply system, slurries oxidation concentration systems, air treatment system, finished product processing system；
The flue gas purification system includes absorption tower (3), the first slurry tank (3-1), clean-up stage, the first serum recycle system (3-
4), purification (3-2)；
Slurries oxidation concentration systems include concentration tower, the second serum recycle system (4-2), and the absorption tower top is equipped with the
One demister (3-3)；
The first slurry tank slurry surface to space between first demister is clean-up stage, and the clean-up stage is provided with purification
Element, the purification connect the first serum recycle system entry and connect the first slurry tank；
Ammoniacal liquor is passed through in the first slurry tank of absorption tower bottom by the ammonia feed system；
The flue gases duct on absorption tower described in the ozone pipeline communication of the ozone supply system, the flue gases duct lead to described net
Change section；
First slurry tank is connected by the first slurries pump in the second slurry tank (4-1) of concentration tower bottom, the second slurry tank
Purification in concentration tower is connected by the second serum recycle system, the second slurry tank connects finished product by the second slurries pump
Processing system；
High temperature air is sent into described concentration tower by the air treatment system.
2. a kind of ammonia process of desulfurization denitrification integral process processing system according to claim 1, it is characterised in that described
Ammonia feed system includes ammonia preparation facilities (1), pump and pipeline valve.
3. a kind of ammonia process of desulfurization denitrification integral process processing system according to claim 1, it is characterised in that described
Ozone supply system includes ozone preparation facilities (2), pipeline and valve.
4. a kind of ammonia process of desulfurization denitrification integral process processing system according to claim 1, it is characterised in that described
Purification top is provided with spray pipe network.
5. a kind of ammonia process of desulfurization denitrification integral process processing system according to claim 1, it is characterised in that described
Flue gas purification system also includes gas approach, neat stress outlet and flue, described in the flue gas of coal-burning boiler enters through high-effective dust-removing
Flue gas purification system gas approach.
6. a kind of ammonia process of desulfurization denitrification integral process processing system according to any one of claim 1 to 5, its feature exist
In the concentration tower top is also equipped with the second demister (4-3).
7. a kind of ammonia process of desulfurization denitrification integral process processing system according to any one of claim 1 to 5, its feature exist
In, connection blast pipe at the top of the concentration tower, the concentration tower side wall connection air-handling chamber.
8. a kind of ammonia process of desulfurization denitrification integral process processing system according to any one of claim 1 to 5, its feature exist
In the air treatment system includes air-handling chamber (5), air heater, blower fan, pipeline and valve.
9. a kind of ammonia process of desulfurization denitrification integral process processing system according to any one of claim 1 to 5, its feature exist
In the finished product processing system includes cyclone separator (6), centrifuge (7), drying machine (8) and the packing machine being sequentially connected
(9)。
10. a kind of ammonia process of desulfurization denitrification integral process processing system according to any one of claim 1 to 5, its feature
It is, space is accommodated in the absorption tower as ammonium sulfite-desulfurizing and denitrifying process section；Second slurries of described concentration tower
Groove accommodates oxidation technology section of the space as sulfite oxidation into ammonium sulfate.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479097A (en) * | 2019-08-31 | 2019-11-22 | 成都中核鑫星应用技术研究所 | A kind of application of ammonium sulfite in bavin gasoline automobile vent gas treatment |
| CN115055034A (en) * | 2022-07-26 | 2022-09-16 | 北京清新环境技术股份有限公司 | Semi-dry treatment method and system for flue gas purification |
-
2017
- 2017-04-27 CN CN201720455711.7U patent/CN206793392U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479097A (en) * | 2019-08-31 | 2019-11-22 | 成都中核鑫星应用技术研究所 | A kind of application of ammonium sulfite in bavin gasoline automobile vent gas treatment |
| CN115055034A (en) * | 2022-07-26 | 2022-09-16 | 北京清新环境技术股份有限公司 | Semi-dry treatment method and system for flue gas purification |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20200427 |
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| CF01 | Termination of patent right due to non-payment of annual fee |