CN208642044U - A kind of flue gas of refuse burning processing system based on multi-tube dust cleaner - Google Patents
A kind of flue gas of refuse burning processing system based on multi-tube dust cleaner Download PDFInfo
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- CN208642044U CN208642044U CN201821056032.3U CN201821056032U CN208642044U CN 208642044 U CN208642044 U CN 208642044U CN 201821056032 U CN201821056032 U CN 201821056032U CN 208642044 U CN208642044 U CN 208642044U
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Abstract
A kind of flue gas of refuse burning processing system based on multi-tube dust cleaner, including grate furnace, the top flue of grate furnace is sequentially connected level-one evaporator, superheater, secondary evaporimeter and economizer, the air inlet of the exhanst gas outlet connection multitube dust catcher of economizer, the gas outlet of multitube dust catcher connects subsequent flue gas purifying equipment, in use, level-one evaporator, superheater, secondary evaporimeter and economizer, so that flue-gas temperature is reduced to 210 DEG C or so；The separating treatment for carrying out material and flue gas in advance by multi-tube dust cleaner, can not only reduce fly ash granule amount in flue gas, at the same also can tail flue gas cleaning equipment dust stratification；The utility model has the advantages that the output of flying dust can be reduced and mitigates loss.
Description
Technical field
The utility model relates to flue gas of refuse burning processing technology field, in particular to a kind of rubbish based on multi-tube dust cleaner
Rubbish incineration flue gas processing system.
Background technique
With the development of economy, the expansion of scale of urbanization and the raising of living standards of the people, the production of domestic waste
Amount is in increased trend year by year.Efficient incineration technology is conducive to alleviate the environmental pollution as caused by municipal refuse.Incineration technology
Treating capacity is big, it is possible to reduce amount of landfill solidifies harmful components, and is able to achieve the abundant recycling of thermal energy, is current most prospect
Technology of garbage disposal.
Flue gas is not only discharged in waste incineration, can also generate a large amount of clinker and flying dust.Garbage burning factory with a 500t is
Example will arrange the clinker and flying dust of 150t or so daily, calculate by 300 days within 1 year, amount to discharge 45000t.As flue gas emission is net
The development of change technology, the discharged flue gas of the burning power plant of modern stable operation are no longer treated as the danger of human health or environment
Dangerous object.However, being enriched the heavy metals such as Hg, As, Cd, Ni, Pb, Zn of higher concentration and two in waste incineration slag and flying dust
English is disliked, if direct emission or dealing with improperly, serious secondary pollution will be brought.
The clinker generated after consumer waste incineration is the effluent that under burning fire grate and smoke and waste steam boiler is collected,
The uncombusted combustible organic of mainly non-flammable inorganic matter and part, such as SIO2、Al2O3、Fe2O3、CaO、MgO、Na2O、
K2O, Cu, Pb, Cr etc..Flying dust refers in flue gas purification system and recuperation of heat using residue obtained by collecting in system, accounts for about
The 20%-40% or so of lime-ash total amount.Fly ash granule partial size is smaller, and specific surface area is larger, and surface viscosity is stronger, heavy metal Cd,
Pb, Zn and Hg etc.) and dioxin can more be enriched on thinner flying dust.With low slag phase ratio, the harmful substance in flying dust contains
Amount is higher, needs as hazardous waste disposal.Therefore, fly ash content is high, will increase the cost of garbage disposal.
The particulate matter that traditional technique generates refuse incineration grate furnace generallys use electric precipitator or bag-type dust
Device is trapped, and there are the following problems:
(1) there is no the bulky grain of enriching heavy metal and dioxin to be captured into flying dust in flue gas yet, cause dangerous waste
Object treating capacity increases；
(2) the flue gas particle concentration before deduster is larger, and pipe wear pressure is big, and denitrating catalyst is be easy to cause to lose
It is living, semi-dry desulphurization system fine grained and liquid contact probability are reduced, and then lower the efficiency of desulphurization denitration equipment.
The patent document of Publication No. CN107166405A discloses a kind of refuse incineration flue gas system, the system
It is made of fire grate, boiler, bag filter, air-introduced machine, flue gas recirculation pipe, secondary air channel, primary air fan and chimney.Utilize cigarette
The depickling of gas recycling+SNCR+ full-dry method (injection sodium bicarbonate superfine powder)+active carbon adsorption+high-efficient cloth-bag dust precipitator optimization
Combined process system, it is ensured that final flue gas emission reaches the requirement of high standard.But high-efficient cloth-bag dust precipitator used by the system
The biggish increase flue resistance of meeting is to increase operation cost.
The flying dust that the patent document of Publication No. CN107255282A discloses in a kind of Refuse Incineration Process recycles
Technique, technical solution are as follows: separator is set before deduster, and the cinder by partial size greater than 50 μm is separated as fine slag
It returns into circulating fluidized bed boiler as bed material, reduces flying dust amount.But the system uses mechanical gravity scummer, remove the gred efficiency
Lower, flue resistance is larger, and blower power consumption is larger.
Summary of the invention
In order to overcome the defects of the prior art described above, the purpose of this utility model is to provide one kind to be based on multi-tube dust cleaner
Flue gas of refuse burning processing system, the output of flying dust can be reduced, to mitigate the processing cost of subsequent flying dust, and mitigate and fly
Running wastage of the ash particle to subsequent desulphurization and denitration and cleaner.
In order to achieve the above object, the technical solution adopted in the utility model are as follows:
A kind of flue gas of refuse burning processing system based on multi-tube dust cleaner, including grate furnace, the top flue of grate furnace
It is sequentially connected level-one evaporator, superheater, secondary evaporimeter and economizer, the exhanst gas outlet connection multitube dust catcher of economizer
The gas outlet of air inlet, multitube dust catcher connects subsequent flue gas purifying equipment.
The superheater uses high temperature superheater, medium temperature overheater, low temperature superheater.
Economizer superheater is provided in front of the economizer, rear is provided with air preheater.
The multitube dust catcher includes collection chamber 1, the exhanst gas outlet of the general import connection economizer of collection chamber 1, gas collection
The gas outlet of room 1 connects the air inlet of parallel multi-tube cyclone separator 2, parallel multi-tube cyclonic separation by flow deflector or grid
The lower section of device 2 is provided with unloading house 3, and the top of parallel multi-tube cyclone separator 2 connects exhaust pipe 4.
The unloading house 3 is funnel type.
The subsequent flue gas purifying equipment includes sequentially connected semi-dry desulphurization reaction tower, bag filter, denitration
Reactor, wet desulphurization and chimney.
The utility model has the beneficial effects that
The utility model uses level-one evaporator, superheater, secondary evaporimeter and economizer, so that flue-gas temperature is reduced to
210 DEG C or so；The separating treatment for carrying out material and flue gas in advance by multi-tube dust cleaner, can not only reduce flying dust in flue gas
Grain amount, while also can tail flue gas cleaning equipment dust stratification.Importantly, cinder is screened by dust-extraction unit, it can
To reduce the output of flying dust, to mitigate the processing cost of subsequent dangerous waste flying dust, and mitigate fly ash granule to subsequent desulphurization and denitration
And the running wastage of cleaner.
Detailed description of the invention
Fig. 1 is Tthe utility model system schematic diagram.
Fig. 2 is the schematic diagram of multi-tube dust cleaner in the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
Shown in referring to Fig.1, a kind of flue gas of refuse burning processing system based on multi-tube dust cleaner, including grate furnace, fire grate
The top flue of furnace is sequentially connected level-one evaporator, superheater, secondary evaporimeter and economizer, the exhanst gas outlet connection of economizer
The gas outlet of the air inlet of multitube dust catcher, multitube dust catcher connects subsequent flue gas purifying equipment.
Referring to shown in Fig. 2, multitube dust catcher includes collection chamber 1, and the flue gas of the general import connection economizer of collection chamber 1 goes out
Mouthful, the gas outlet of collection chamber 1 connects the air inlet of parallel multi-tube cyclone separator 2, parallel multi-tube by flow deflector or grid
The lower section of cyclone separator 2 is provided with unloading house 3, and the top of parallel multi-tube cyclone separator 2 connects exhaust pipe 4.
Working principle of the utility model is:
Rubbish is placed in grate furnace and burns, and the flue gas of generation passes sequentially through flue, level-one evaporator, high temperature above grate furnace
Superheater, medium temperature overheater, low temperature superheater, secondary evaporimeter, economizer superheater, economizer, air preheater, multitube remove
Atmosphere is discharged into after dirt device and the processing of subsequent flue gas purifying equipment.
Ash-laden gas temperature by economizer is~210 DEG C, enters collection chamber 1 by total inlet pipe, then in flow deflector
Or under the action of grid, air-flow enters the import of parallel multi-tube cyclone separator 2, and speed is 15~20m/s, can use compared with
Small entrance section product reaches higher air velocity to obtain higher separative efficiency；Air-flow becomes circumference fortune from moving along a straight line
Dynamic, the overwhelming majority of swirling eddy is helically moved downward along cylinder, and dusty gas generates centrifugal force in rotary course, will be compared with
It is heavier greatly not get rid of with the particle of stream to barrel.Grit with barrel after contacting, and the comprehensive of power makees the inertia force and gravity the effects of
Ash discharging hole is fallen under, and eventually enters into unloading house 3, when rotating downward air-flow arrival 2 cone lower end of multicyclone,
Because the contraction air-flow of cone from bottom to top continues shape flowing of spinning along tubular axis direction, it is discharged by exhaust pipe 4.Dedusting effect
Rate is about 91%~93%；Resistance: 900~1000Pa；Inlet velocity: 15~30m/s.By the flue gas of multi-tube dust cleaner, contain
Dirt particle is substantially reduced, and is discharged after entering back into the subsequent flue gas purifying equipment purification such as desulfurization, bag filter, denitration.
Claims (6)
1. a kind of flue gas of refuse burning processing system based on multi-tube dust cleaner, including grate furnace, which is characterized in that grate furnace
Top flue is sequentially connected level-one evaporator, superheater, secondary evaporimeter and economizer, and the exhanst gas outlet of economizer connects multitube
The gas outlet of the air inlet of dust catcher, multitube dust catcher connects subsequent flue gas purifying equipment.
2. a kind of flue gas of refuse burning processing system based on multi-tube dust cleaner according to claim 1, which is characterized in that
The superheater uses high temperature superheater, medium temperature overheater, low temperature superheater.
3. a kind of flue gas of refuse burning processing system based on multi-tube dust cleaner according to claim 1, province's coal
Economizer superheater is provided in front of device, rear is provided with air preheater.
4. a kind of flue gas of refuse burning processing system based on multi-tube dust cleaner according to claim 1, the multitube
Dust catcher includes collection chamber (1), and the exhanst gas outlet of the general import connection economizer of collection chamber (1), the gas outlet of collection chamber (1) leads to
Cross the air inlet of flow deflector or grid connection parallel multi-tube cyclone separator (2), the lower section of parallel multi-tube cyclone separator (2)
It is provided with unloading house (3), the top of parallel multi-tube cyclone separator (2) connects exhaust pipe (4).
5. a kind of flue gas of refuse burning processing system based on multi-tube dust cleaner according to claim 4, the discharge
Room (3) is funnel type.
6. a kind of flue gas of refuse burning processing system based on multi-tube dust cleaner according to claim 1, described is subsequent
Flue gas purifying equipment include sequentially connected semi-dry desulphurization reaction tower, bag filter, Benitration reactor, wet desulphurization and
Chimney.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821056032.3U CN208642044U (en) | 2018-07-05 | 2018-07-05 | A kind of flue gas of refuse burning processing system based on multi-tube dust cleaner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821056032.3U CN208642044U (en) | 2018-07-05 | 2018-07-05 | A kind of flue gas of refuse burning processing system based on multi-tube dust cleaner |
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| CN208642044U true CN208642044U (en) | 2019-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289484A (en) * | 2021-05-06 | 2021-08-24 | 泸州市兴泸环保发展有限公司 | Waste incineration flue gas deacidification system and deacidification method |
-
2018
- 2018-07-05 CN CN201821056032.3U patent/CN208642044U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289484A (en) * | 2021-05-06 | 2021-08-24 | 泸州市兴泸环保发展有限公司 | Waste incineration flue gas deacidification system and deacidification method |
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