CN206944178U - A kind of smoke processing system - Google Patents
A kind of smoke processing system Download PDFInfo
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- CN206944178U CN206944178U CN201720839682.4U CN201720839682U CN206944178U CN 206944178 U CN206944178 U CN 206944178U CN 201720839682 U CN201720839682 U CN 201720839682U CN 206944178 U CN206944178 U CN 206944178U
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- flue gas
- incinerator
- gas
- flue
- cooling
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model provides a kind of smoke processing system, and the system includes incinerator；Flue-gas-cooling system, the flue-gas-cooling system add the high-temperature flue gas discharged by the incinerator to be cooled down, to obtain the flue gas that cools；And the part in the cooling flue gas is converted into flue gas recycled and introduces the incinerator by flue gas recirculation system, the flue gas recirculation system.Mixed according to smoke processing system of the present utility model by the way that part low-temperature flue gas is withdrawn into burner hearth with high-temperature flue gas, reduce average flue-gas temperature in burner hearth, coking in burner hearth can not only be slowed down, also NOx emission concentration can be reduced, need not be using handling process such as SNCR or SNCR+SCR, simple fume treatment engineering, simplify system construction.
Description
Technical field
The present invention relates to biomass incineration flue gas process field, in particular to a kind of smoke processing system.
Background technology
With the continuous expansion of city numbers and scale, the requirement more and more higher to treatment of urban garbage.At present, in city
The mode of processing rubbish mainly uses burning disposal, and CO is included in tail gas caused by waste incineration2, H2O,SO2, NOXDeng except this
Outside, also produce some toxic gases, including particulate matter, bioxin, polycyclic aromatic hydrocarbon (PAHs) and aldehydes etc..It is for this reason, it may be necessary to right
Rubbish Cen Shao carries out gas cleaning processing.
Burning power plant fume emission index performs the standard of European Union 2000 at present, with the reinforcement of environmental consciousness, power plant
Emission request is more and more tighter, and some regional burning power plants require zero-emission, cause operating cost more and more higher.China shows
There is garbage-incineration smoke purifying processing substantially to use flue gas combined treatment process, including semidry method depickling, charcoal absorption two
Evil English and sack cleaner dedusting etc..In existing flue gas of refuse burning treatment technology, the control to NOx is mainly with " burning
Control+reducing process " removes, wherein, reducing process includes SNCR (SNCR) and SCR (SCR) two
The combination of kind mode or two kinds of modes.During using SCR technology, in order to meet the requirement of catalyst converter reaction temperature, generally require
Flue gas after depickling, dust removal process is heated to suitable temperature, consumption heat energy compared with；Will for NOx concentration of emission
, it is necessary to using SNCR+SCR in the case of asking lower, i.e., ammoniacal liquor or urea are first sprayed into burner hearth, remove part NOx, Ran Hou
Cigarette temperature lower, flue gas further remove NOx by denitrating catalyst, reach lower concentration of emission.Under existing technology, adopt
With SNCR or SNCR+SCR removing NOx, not only increase power plant's denitrification investment and operating cost, be also easy to cause the escaping of ammonia to ask
Topic, further pollutes air.
For this reason, it is necessary to propose a kind of new smoke processing system.
The content of the invention
A series of concept of reduced forms is introduced in Summary, this will enter in specific embodiment part
One step describes in detail.The Summary of the present invention is not meant to attempt to limit technical scheme claimed
Key feature and essential features, the protection domain for attempting to determine technical scheme claimed is not meant that more.
The invention provides a kind of smoke processing system, the system includes：
Incinerator；
Flue-gas-cooling system, the flue-gas-cooling system are cooled down the high-temperature flue gas discharged by the incinerator, with
Obtain the flue gas that cools；And
A part in the cooling flue gas is converted into recycling by flue gas recirculation system, the flue gas recirculation system
Flue gas introduces the incinerator.
Exemplary, the flue-gas-cooling system includes the energy regenerating cooling system being arranged in the incinerator.
Exemplary, the energy regenerating cooling system includes flue gas-air heat exchanger.
Exemplary, the flue-gas-cooling system is arranged on the chilling between incinerator and the flue gas recirculation system
Tower.
Exemplary, the system includes chimney, and the flue gas recirculation system includes being arranged on before the chimney
The cooling flue gas is divided into two parts by recirculation blower, the recirculation blower, and a portion is converted into the recycling
Flue gas, another part are discharged via the chimney.
Exemplary, the system also includes being arranged on depickling between the incinerator and the flue gas recirculation system
Tower.
Exemplary, the system also includes the dedusting being arranged between the extracting tower and the flue gas recirculation system
Device.
Exemplary, the flue gas recycled fills into waste incinerator by First air or Secondary Air.
Mixed according to the smoke processing system of the present invention by the way that part low-temperature flue gas is withdrawn into burner hearth with high-temperature flue gas,
Average flue-gas temperature in burner hearth is reduced, coking in burner hearth can not only be slowed down, NOx emission concentration can be also reduced, without using SNCR
Or the handling process such as SNCR+SCR, simple fume treatment engineering, simplify system construction.
Brief description of the drawings
The drawings below of the present invention is used to understand the present invention in this as the part of the present invention.Shown in the drawings of this hair
Bright embodiment and its description, for explaining the principle of the present invention.
In accompanying drawing：
Fig. 1 is the structural representation according to the incinerator of one embodiment of the present of invention；
Fig. 2 is the structural representation according to a kind of smoke processing system of one embodiment of the present of invention.
Embodiment
In the following description, a large amount of concrete details are given to provide more thorough understanding of the invention.So
And it is obvious to the skilled person that the present invention can be able to without one or more of these details
Implement.In other examples, in order to avoid obscuring with the present invention, do not enter for some technical characteristics well known in the art
Row description.
In order to thoroughly understand the present invention, detailed description will be proposed in following description, to illustrate of the present invention half
Conductor device manufacture method.Obviously, execution of the invention be not limited to the technical staff of semiconductor applications be familiar with it is special thin
Section.Presently preferred embodiments of the present invention is described in detail as follows, but in addition to these detailed descriptions, the present invention can also have other
Embodiment.
It should give it is noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the exemplary embodiment of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Intention includes plural form.Additionally, it should be understood that when using term "comprising" and/or " comprising " in this manual
When, it, which is indicated, has the feature, entirety, step, operation, element and/or component, but does not preclude the presence or addition of one or more
Individual other features, entirety, step, operation, element, component and/or combinations thereof.
Now, the exemplary embodiment according to the present invention is more fully described with reference to the accompanying drawings.However, these exemplary realities
Applying example can be implemented with many different forms, and should not be construed to be limited solely to the embodiments set forth herein.Should
Understand be to provide these embodiments be in order that disclosure of the invention is thoroughly and complete, and by these exemplary implementations
The design of example is fully conveyed to those of ordinary skill in the art.In the accompanying drawings, for the sake of clarity, the thickness in layer and region is exaggerated
Degree, and make identical element is presented with like reference characters, thus description of them will be omitted.
The dry desulfurization handling process processing biomass burning process generally used in biomass incineration flue gas processing at present
In flue gas, wherein, be mainly directly inserted into using round steel pipe in straight flue, by being injected directly into calcium hydroxide by steel pipe to enter
Row desulfurization process.However, because round steel pipe is directly inserted into straight flue, flow of flue gas is stable, hydrated lime particle and flue gas
Undercompounding, cause absorption and reaction efficiency not high, it is impossible to fully to be reacted with sulfide, flue gas purification system desulfurization effect
Rate is relatively low.
Therefore, the invention provides a kind of smoke processing system, the system includes：
Incinerator；
Flue-gas-cooling system, the flue-gas-cooling system add the high-temperature flue gas discharged by the incinerator to be cooled down, with
Obtain the flue gas that cools；And
A part in the cooling flue gas is converted into recycling by flue gas recirculation system, the flue gas recirculation system
Flue gas introduces the incinerator.
Mixed according to the smoke processing system of the present invention by the way that part low-temperature flue gas is withdrawn into burner hearth with high-temperature flue gas,
Average flue-gas temperature in burner hearth is reduced, coking in burner hearth can not only be slowed down, NOx emission concentration can be also reduced, without using SNCR
Or the handling process such as SNCR+SCR, simple fume treatment engineering, simplify system construction.
Embodiment one
The smoke processing system of the present invention is schematically illustrated below with reference to Fig. 1 and Fig. 2, wherein Fig. 1 is according to this
The structural representation of the incinerator of one embodiment of invention；Fig. 2 is at a kind of flue gas according to one embodiment of the present of invention
The structural representation of reason system.
Because the species of rubbish is different, house refuse, high heating value house refuse, industrial refuse and doctor can be classified as
Treatment rubbish etc. is several, rubbish is carried out in burning process because caused calorific value is not after the water content of every kind of rubbish and burning
Together, generally require different incinerators to be handled, generally selected for high heating value house refuse, industrial refuse and medical waste
Handled with the incinerator of water-cooling vibration furnace grate.Typical waste incinerator is as shown in figure 1, including charging aperture 101, feed stove
Row 102, the fire grate 103 in burner hearth for waste incineration, the First air air feed system 104 positioned at burning fire grate bottom, position
In the Secondary Air air feed system 105 in furnace throat portion, slag extractor 106 and the high-temperature flue gas outlet 107 positioned at roof of the furnace.Burn
Fire grate is monolithically fabricated the siege for burning away the refuse, and the siege edge is longitudinally divided into dryer section, burning zone and after-flame section, incinerator
Row is overall along multiple burning units are longitudinally divided into, usually 5 units, each burning unit by multiple slip fire grate segments, stir
Fire grate segment and fixed grate film composition.Rubbish pours into the waste incinerator from charging aperture, by the reciprocal promotion for being fed fire grate
The rubbish is acted on into being burned on the siege in the incinerator, is oven-dried in rubbish described in the dryer section, is dehydrated,
The rubbish is mainly burnt in the burning zone, and the rubbish by after-flame section has burnt totally, afterwards remaining clinker
Into slag extractor, discharged out of the furnace by slag extractor.Wherein described First air is sent into from the air compartment of the burning fire grate bottom, and described two
Secondary wind is sent into from the furnace throat portion of the waste incinerator.The roof of the furnace discharge of waste incinerator described in high-temperature flue gas, by cigarette
Gas processing system processing.
Referring to Fig. 2, the smoke processing system includes incinerator 201, is arranged on the flue gas recirculation of the rear end of incinerator 201
System 202, and between the flue gas recirculation system 202 and the incinerator 201, flue gas cool-down system, flue gas is again
A part in cooling flue gas after the processing of flue gas cool-down system is converted into flue gas recycled and introduced by the circulatory system 202 burns
Burn in stove 201.Mixed by the way that part low-temperature flue gas is withdrawn into burner hearth with high-temperature flue gas, reduce average flue gas temperature in burner hearth
Degree, can not only slow down coking in burner hearth, can also reduce NOx emission concentration, without using the handling process such as SNCR or SNCR+SCR,
Fume treatment process is simplified, simplifies system construction.Exemplary, the flue gas recirculation system includes recirculation blower,
Described that cooling flue gas is divided into two parts in circulating fan, a portion is converted into flue gas recycled and is introduced into incinerator 201,
Another part is discharged into chimney 203, further simplifies system construction.
Exemplary, the flue-gas-cooling system is arranged on the chilling between incinerator and the flue gas recirculation system
Tower.With continued reference to Fig. 2, the flue gas cool-down system includes being arranged on the rear end of incinerator 201, with the flue gas recirculation system
Chilling tower 204 between 202.In the chilling tower 204, spray into high speed water directly with flue gas hybrid cooling.Exemplary, can
To use any chilling tower well known in the art, such as the devices such as spray column, distribution device, pressure atomization shower nozzle can be included,
Those skilled in the art can select required chilling tower as needed.
Exemplary, the cooling system includes the energy regenerating cooling system being arranged in the incinerator.It is exemplary
, the energy regenerating cooling system includes flue gas-air heat exchanger, high-temperature flue gas and normal temperature air are carried out into hot friendship
Change, atmospheric heat is passed to normal temperature flue gas by high-temperature flue gas, and high-temperature flue-gas reduces, the rise of normal temperature air temperature.The temperature
The energy for spending elevated air can be used to be converted into the interior energy of air.Exemplary, the energy regenerating cooling system also includes
Steam turbine, the interior energy can be converted into mechanical or electrical energy by the steam turbine, to realize the recycling of flue gas heat.Cigarette
Gas-air heat exchanger can be heat exchanger well known in the art, such as dividing wall type heat exchanger, heat regenerator, fluidly connect
Indirect type heat exchanger, direct-contact heat exchanger, composite heat exchanger etc., type of the utility model to flue gas-air heat exchanger
And it is not limited.The energy regenerating cooling system utilizes flue gas-air heat exchanger and steam turbine by the heat of high-temperature flue gas
Amount is converted into what can mechanically or electrically be merely exemplary, other transition forms, application mode, as interior energy is converted to machine by forcing press
Tool energy, cooling processing can be carried out to high-temperature flue gas, and the form of the heat progress recycling to high-temperature flue gas is applied to
The present invention.
Exemplary, the system also includes being arranged on extracting tower between the incinerator and the flue gas recirculation system
And sack cleaner.With continued reference to Fig. 2, the smoke processing system also includes being mainly provided with atomizer in the tower of extracting tower 205,
The body containing alkali lye prepared is sprayed into tower, and then realizes the purpose of acid-base integration.
Exemplary, the system also includes being arranged on the deduster after extracting tower.The sack cleaner, can go
Except the dust in flue gas, other harmful substances in flue gas are also can remove, are the key equipments of fume treatment.Illustratively, it is described to remove
Dirt device can be any kind of deduster well known in the art, for example, sack cleaner, hydrofilter, cyclone dust collectors,
Electrostatic precipitator etc..Preferably, the deduster is sack cleaner.Illustratively, can be according to actual conditions reasonable selection cloth bag
Filtration velocity, filter pocket material, purge mode and the control mode of deduster, effectively to control dust in flue gas, sour gas, two
Dislike the content of English, heavy metal etc..
Exemplary, the flue gas recycled fills into waste incinerator by First air or Secondary Air.With continued reference to Fig. 2,
The flue gas recycled converted by the flue gas recirculation system 202 fills into the First air of incinerator 201 or Secondary Air entrance 206, right
The flue gas of conversion further utilizes, and further lifts flue gas utilization efficiency.
In summary, according to the smoke processing system of the present invention by the way that part low-temperature flue gas is withdrawn into burner hearth and high temperature
Flue gas mixes, and reduces average flue-gas temperature in burner hearth, can not only slow down coking in burner hearth, can also reduce NOx emission concentration, without
Using handling process such as SNCR or SNCR+SCR, simple fume treatment engineering, system construction is simplified.
The present invention is illustrated by above-described embodiment, but it is to be understood that, above-described embodiment is only intended to
Citing and the purpose of explanation, and be not intended to limit the invention in described scope of embodiments.In addition people in the art
Member can also make more kinds of it is understood that the invention is not limited in above-described embodiment according to the teachings of the present invention
Variants and modifications, these variants and modifications are all fallen within scope of the present invention.Protection scope of the present invention by
The appended claims and its equivalent scope are defined.
Claims (8)
1. a kind of smoke processing system, it is characterised in that the system includes：
Incinerator；
Flue-gas-cooling system, the flue-gas-cooling system are cooled down the high-temperature flue gas discharged by the incinerator, to obtain
Cool flue gas；And
A part in the cooling flue gas is converted into flue gas recycled by flue gas recirculation system, the flue gas recirculation system
Introduce the incinerator.
2. the system as claimed in claim 1, it is characterised in that the flue-gas-cooling system includes being arranged in the incinerator
Energy regenerating cooling system.
3. system as claimed in claim 2, it is characterised in that the energy regenerating cooling system exchanges heat including flue gas-air
Device.
4. the system as claimed in claim 1, it is characterised in that the flue-gas-cooling system is arranged on incinerator and the flue gas
Chilling tower between recirculating system.
5. the system as claimed in claim 1, it is characterised in that the system includes chimney, the flue gas recirculation system bag
The recirculation blower before being arranged on the chimney is included, the cooling flue gas is divided into two parts by the recirculation blower, wherein
A part is converted into the flue gas recycled, and another part is discharged via the chimney.
6. system as claimed in claim 2, it is characterised in that the system also includes being arranged on the incinerator and the cigarette
Extracting tower between gas recirculating system.
7. system as claimed in claim 6, it is characterised in that the system also includes being arranged on the extracting tower and the cigarette
Deduster between gas recirculating system.
8. system as claimed in claim 2, it is characterised in that the flue gas recycled fills into rubbish by First air or Secondary Air
Rubbish incinerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720839682.4U CN206944178U (en) | 2017-07-11 | 2017-07-11 | A kind of smoke processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720839682.4U CN206944178U (en) | 2017-07-11 | 2017-07-11 | A kind of smoke processing system |
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| Publication Number | Publication Date |
|---|---|
| CN206944178U true CN206944178U (en) | 2018-01-30 |
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ID=61369370
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| CN201720839682.4U Active CN206944178U (en) | 2017-07-11 | 2017-07-11 | A kind of smoke processing system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108543419A (en) * | 2018-04-28 | 2018-09-18 | 光大环保技术研究院（南京）有限公司 | A kind of refuse burning system |
| CN109631598A (en) * | 2018-12-06 | 2019-04-16 | 海南中航特玻科技有限公司 | A kind of all-oxygen combustion glass kiln denitration system and method based on flue gas recirculating technique |
| CN110274242A (en) * | 2018-03-14 | 2019-09-24 | 格林美股份有限公司 | A kind of hazardous waste processing system |
| WO2022095154A1 (en) * | 2020-11-09 | 2022-05-12 | 广东工业大学 | Low-nitrogen coupling combustion processing system for landfill odorous gas and solid waste |
-
2017
- 2017-07-11 CN CN201720839682.4U patent/CN206944178U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274242A (en) * | 2018-03-14 | 2019-09-24 | 格林美股份有限公司 | A kind of hazardous waste processing system |
| CN108543419A (en) * | 2018-04-28 | 2018-09-18 | 光大环保技术研究院（南京）有限公司 | A kind of refuse burning system |
| CN109631598A (en) * | 2018-12-06 | 2019-04-16 | 海南中航特玻科技有限公司 | A kind of all-oxygen combustion glass kiln denitration system and method based on flue gas recirculating technique |
| WO2022095154A1 (en) * | 2020-11-09 | 2022-05-12 | 广东工业大学 | Low-nitrogen coupling combustion processing system for landfill odorous gas and solid waste |
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