CN107631304A - A kind of smoke circulating system suitable for cement kiln synergic processing house refuse - Google Patents
A kind of smoke circulating system suitable for cement kiln synergic processing house refuse Download PDFInfo
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- CN107631304A CN107631304A CN201711070042.2A CN201711070042A CN107631304A CN 107631304 A CN107631304 A CN 107631304A CN 201711070042 A CN201711070042 A CN 201711070042A CN 107631304 A CN107631304 A CN 107631304A
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- China
- Prior art keywords
- flue gas
- air
- cement kiln
- air preheater
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000779 smoke Substances 0.000 title claims abstract description 35
- 239000004568 cement Substances 0.000 title claims abstract description 34
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 24
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 46
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000003546 flue gas Substances 0.000 claims abstract description 41
- 238000002309 gasification Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000005325 percolation Methods 0.000 claims abstract description 8
- 230000008676 import Effects 0.000 claims abstract description 7
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000003860 storage Methods 0.000 claims description 26
- 230000033228 biological regulation Effects 0.000 claims description 7
- 239000002699 waste material Substances 0.000 abstract description 7
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 239000010791 domestic waste Substances 0.000 description 4
- 238000004056 waste incineration Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a kind of smoke circulating system suitable for cement kiln synergic processing house refuse, including cement kiln synergic processing garbage apparatus and smoke circulating device.Wherein, cement kiln synergic processing garbage apparatus includes feed system, gasification burning system, dreg removing system, stench processing system and percolation liquid treating system, and smoke circulating device includes smoke pipe, heat-exchanger rig, high-temperature flue gas import, low-temperature flue gas outlet, Cryogenic air entrance and high temperature air outlet.Smoke circulating device is combined by the present invention with cement kiln synergic processing garbage apparatus, utilize high-temperature flue gas pre-heated combustion air in the grate furnace burnt away the refuse, air after preheating is re-fed into grate furnace burning, so ensure smoothly catching fire, fully burn for waste of low heating value, also ensure the chamber temperature of grate furnace so that the stability and reliability of grate furnace are higher.The present invention is easy to operate, stable, investment is small, and operating cost is low.
Description
Technical field
The invention discloses a kind of smoke circulating system suitable for cement kiln synergic processing house refuse, belongs to city life
Field of garbage disposal living.
Background technology
As the improvement of people's living standards, the discharge of house refuse is also more and more.At present, China's domestic waste
Volume of cargo in storage occupies cultivated land 500,000,000 square metres up to 6,000,000,000 tons, produces 200,000,000 tons of domestic wastes every year, will also be with 9% speed
It is swift and violent to increase.The house refuse of these substantial amounts forms the prestige being on the rise to city and greenbelt ecological environment
The side of body.Traditional waste disposal method has landfill method, composting process and burning method, and Urban Garbage Treatment in China is started late, main at present
Will be based on sanitary landfills.It is few due to treating capacity be present although establishing waste incineration and power plant in some cities, processing
Process is along with harmful gas (bioxin), sewage (percolate), the emission problem such as waste residue (content of beary metal high), rubbish
Rubbish burning method still suffers from certain dispute at present.Unique production technology of manufacture of cement provides excellent for processing domestic waste
Good condition, the existing nearly 30 years history of overseas utilization cement kiln synergic processing house refuse.
Processing domestic waste is cooperateed with using cement kiln, on the one hand can utilize the resolution garbage disposal of cement firing system
During foul smell and noxious material；On the other hand, lime-ash caused by waste incineration can use as cement mixture, in rubbish
Noxious material can resolve into corresponding inorganic matter and heavy metals immobilization in clinker.Meanwhile quality coal in cement kiln systems produces
Part high-temp waste gas can be as waste incineration supplemental heat source or whole thermals source, the burning process of rubbish is more filled
Point, further reduce the discharge of bioxin.
At present, cement kiln synergic processing house refuse system is using fire grate furnace apparatus, it is necessary to utilize 850-950 DEG C of height
Warm flue gas heats normal temperature air as thermal source, and normal temperature air temperature is relatively low, and grate furnace internal-combustion can be caused not by being directly entered
It is stable.Only fire box temperature is stable, just can guarantee that waste steady burning and stable operation of the boiler, produces stable steam and cigarette
Gas, ensure air preheater normal work, and then establish benign cycle, ensure waste steady burning.
The content of the invention
In order to ensure smoothly catching fire, fully burn for waste of low heating value, and ensure the chamber temperature of grate furnace, this hair
A kind of smoke circulating system suitable for cement kiln synergic processing house refuse of bright offer, the stability of grate furnace can be greatly improved
And reliability.
The technical solution adopted by the present invention is as follows：
A kind of smoke circulating system suitable for cement kiln synergic processing house refuse, including cement kiln synergic processing rubbish
Device and smoke circulating device, cement kiln synergic processing garbage apparatus include feed system, gasification burning system, dreg removing system,
Stench processing system and percolation liquid treating system, smoke circulating device include smoke pipe, heat-exchanger rig, high-temperature flue gas import, low
Warm exhanst gas outlet, Cryogenic air entrance and high temperature air outlet, the feed system include cram packer, rubbish storage hole and
Feed arrangement；Rubbish storage hole top is provided with driving, and rubbish is delivered to feed arrangement, feed arrangement and gasification burning by driving grab bucket
System is connected；The gasification burning system includes grate furnace, and grate furnace connects with cement kiln dore furnace；The dreg removing system and stove
Grate furnace is connected；The stench processing system is connected with rubbish storage hole；The percolation liquid treating system and the bottom in rubbish storage hole
Portion is connected；High-temperature flue gas in the grate furnace delivers to heat-exchanger rig by high-temperature flue gas import, after heat-exchanger rig exchanges heat
Low-temperature flue gas is sent grate furnace back to by low-temperature flue gas outlet and circulated；Cryogenic air in storage hole is delivered to by Cryogenic air entrance
Heat-exchanger rig, the high temperature air after heat-exchanger rig exchanges heat deliver to grate furnace by high temperature air outlet.
Further, the heat-exchanger rig includes air preheater and circulating fan, and air preheater includes one-level
Air preheater and secondary air preheater, main air preheater and secondary air preheater are connected by smoke pipe.
Further, the flue gas in the main air preheater and air heat-exchange use counter-flow arrangement, the two level sky
Flue gas and air heat-exchange in air preheater use down current arrangement.
Further, the smoke circulating device is provided with regulation bypass duct, and one end and the one-level for adjusting bypass duct are empty
The low-temperature flue gas outlet connection of air preheater, the other end are connected with the high-temperature flue gas import of secondary air preheater.
Further, caused high-temperature flue gas is sent into adjusting after the low-temperature flue gas of bypass duct mixes in the grate furnace
In secondary air preheater, and the high temperature air following current entered with main air preheater by smoke pipe in secondary air preheater
Heat exchange, air themperature is 220 DEG C after heat exchange；Flue gas after the heat exchange of secondary air preheater is sent into main air preheater,
And the Cryogenic air countercurrent flow entered with storage hole by Cryogenic air entrance in main air preheater, Air Temperature after heat exchange
Spend for 110 DEG C, then the air after heat exchange is sent into grate furnace by high temperature air outlet and burnt.
Smoke circulating device is combined by the present invention with cement kiln synergic processing garbage apparatus, utilizes the fire grate burnt away the refuse
Furnace high-temperature flue gas carrys out pre-heated combustion air, and the air after preheating is re-fed into grate furnace burning, so can guarantee that waste of low heating value
Smoothly catch fire, fully burn, moreover it is possible to ensure the chamber temperature of grate furnace so that the stability and reliability of grate furnace are more
It is high.Meanwhile of the invention system operatio is easy, stable, investment is small, operating cost is low, has application prospect well.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.Description of symbols in figure：1- cram packers；2- rubbish storages are cheated；3- drives a vehicle
Grab bucket；4- drives a vehicle；5- feed arrangements；6- grate furnaces；7- percolation liquid treating systems；8- dreg removing systems；9- main air preheaters；
10- secondary air preheaters；11- dore furnaces；12- stench processing systems；13- adjusts bypass duct.
Embodiment
It is described further below in conjunction with drawings and examples.
A kind of smoke circulating system suitable for cement kiln synergic processing house refuse of the present embodiment, including cement kiln association
With disposal garbage system and smoke circulating device.Cement kiln synergic processing garbage system include feed system, gasification burning system,
Waste gas and kiln system, dreg removing system 8, stench processing system 12 and percolation liquid treating system 7.Feed system includes rubbish storage
Hole 2, feed arrangement 5；Rubbish storage hole top is provided with driving 4 and driving grab bucket 3；Feed arrangement 5 and the stove of gasification burning system
Grate furnace 6 is connected；Rubbish is dried in grate furnace 6, gasifies, burned, and grate furnace 6 and cement kiln dore furnace 11 connect, and grate furnace 6 fires
Flue gas after burning delivers to dore furnace 11；The clinker of after-flame is sent to feed proportioning station after the collection of dreg removing system 8 and participates in dispensing, grinding
Into raw meal powder；The percolate in rubbish storage hole 2 is handled by percolation liquid treating system 7.The high-temperature flue gas of smoke circulating device enters
Mouth is connected with grate furnace 6, and the low-temperature flue gas after heat exchange is sent grate furnace 6 back to and circulated；Cryogenic air entrance is connected with storage hole 2, high
Warm air outlet is connected with grate furnace 6.
Negative pressure state is maintained in rubbish storage hole 2, being sent into grate furnace 6 after the 2 foul smell preheating of storage hole participates in burning；Gasification is burnt
When burning system shutdown, the foul smell in storage hole 2 handles qualified rear externally discharge by stench processing system 12.
Smoke circulating device includes air preheater and circulating fan etc., and air preheater preheats including main air
Device 9 and secondary air preheater 10, main air preheater 9 are connected with secondary air preheater 10 by pipeline, main air
Flue gas and air heat-exchange in preheater 9 use counter-flow arrangement, and the flue gas and air heat-exchange in secondary air preheater 10 use
Down current arrangement.
In the present embodiment, smoke circulating device is provided with regulation bypass duct 13, and regulation bypass duct 13 utilizes main air
The flow and temperature of the high-temperature flue gas import of the low exit temperature flue gas of preheater 9 regulation secondary air preheater 10, to ensure that air is pre-
Thermal main air preheater 9 and the steady operation of secondary air preheater 10.
The present embodiment provides a kind of workflow of smoke circulating system suitable for cement kiln synergic processing house refuse,
Comprise the following steps that：
Rubbish is transported to cooperative disposal plant area by cram packer 1, through weighbridge at plant area gate, after operation of weighing；By rubbish
Rubbish is discharged in rubbish storage hole 2.Rubbish storage is stacked using subregion, and rubbish storage hole top is provided with two drivings 4, standby each other
With a turning for being used for rubbish, another is grabbed rubbish the top hopper of feed arrangement 5 for being sent to grate furnace 6, feed arrangement 5
Rubbish is transported to 6 inner burning of grate furnace again；The combustion air source of grate furnace 6 produces in outdoor air and rubbish storage hole 2
Foul gas, rubbish in grate furnace 6 dry, burn, after-flame.
Rubbish high-temperature flue gas caused by burning in grate furnace 6 is sent to cement kiln dore furnace 11 through high-temperature flue and participates in high temperature
Burn, and using 880 DEG C or so in dore furnace 11 of high-temperature alkaline condition, absorb and handle bioxin etc. caused by waste incineration
Pernicious gas, toxic organic compound is thoroughly decomposed, while also replace dore furnace part of fuel.Clinker after incineration firing is through row
Slag system 8 is collected, and is discharged to after follow-up slag handling system removes metal object and is transported to feed proportioning station participation dispensing, powder
Raw meal powder is worn into, then clinker is sintered into by rotary system, heavy metal harmful element is solid-solubilized in clinker.
Wherein, high-temperature flue gas is with adjusting after the low-temperature flue gas of bypass duct 13 mixes through cigarette caused by being burned in grate furnace 6
Pipe is sent into secondary air preheater 10, and is entered with main air preheater 10 by smoke pipe in secondary air preheater 10
High temperature air downstream heat transfer, air themperature is 220 DEG C after heat exchange, and the flue gas after the heat exchange of secondary air preheater 10 is sent into one-level
In air preheater 9, and the Cryogenic air adverse current entered with storage hole 2 by Cryogenic air entrance in main air preheater 9
Heat exchange, air themperature is 110 DEG C after heat exchange, and the air after preheating is exported by high temperature air be sent into 6 burning in grate furnace again.
Claims (5)
1. a kind of smoke circulating system suitable for cement kiln synergic processing house refuse, including cement kiln synergic processing rubbish dress
Put and smoke circulating device, cement kiln synergic processing garbage apparatus include feed system, gasification burning system, dreg removing system (8),
Stench processing system (12) and percolation liquid treating system, smoke circulating device include smoke pipe, heat-exchanger rig, high-temperature flue gas and entered
Mouth, low-temperature flue gas outlet, Cryogenic air entrance and high temperature air outlet, it is characterised in that the feed system includes rubbish and transported
Defeated car (1), rubbish storage hole (2) and feed arrangement (5)；Driving (4) is provided with above rubbish storage hole (2), driving grab bucket (3) will
Rubbish delivers to feed arrangement (5), and feed arrangement (5) is connected with gasification burning system；The gasification burning system includes grate furnace
(6), grate furnace (6) and cement kiln dore furnace (11) connection；The dreg removing system (8) is connected with grate furnace (6)；At the foul smell
Reason system (12) is connected with rubbish storage hole (2)；The percolation liquid treating system (7) is connected with the bottom in rubbish storage hole (2)；
High-temperature flue gas in the grate furnace (6) delivers to heat-exchanger rig by high-temperature flue gas import, the low temperature after heat-exchanger rig exchanges heat
Flue gas is sent grate furnace (6) back to by low-temperature flue gas outlet and circulated；Cryogenic air in storage hole (2) is sent by Cryogenic air entrance
To heat-exchanger rig, the high temperature air after heat-exchanger rig exchanges heat delivers to grate furnace (6) by high temperature air outlet.
2. a kind of smoke circulating system suitable for cement kiln synergic processing house refuse as claimed in claim 1, its feature
It is, the heat-exchanger rig includes air preheater and circulating fan, and air preheater includes main air preheater (9)
With secondary air preheater (10), main air preheater (9) is connected with secondary air preheater (10) by smoke pipe.
3. a kind of smoke circulating system suitable for cement kiln synergic processing house refuse as claimed in claim 2, its feature
It is, the flue gas and air heat-exchange in the main air preheater (9) use counter-flow arrangement, the secondary air preheater
(10) flue gas and air heat-exchange in use down current arrangement.
4. a kind of smoke circulating system suitable for cement kiln synergic processing house refuse as described in one of claims 1 to 3,
Characterized in that, the smoke circulating device is provided with regulation bypass duct (13), one end of regulation bypass duct (13) and one-level
The low-temperature flue gas outlet connection of air preheater (9), the other end are connected with the high-temperature flue gas import of secondary air preheater (10).
5. a kind of smoke circulating system suitable for cement kiln synergic processing house refuse as claimed in claim 4, its feature
It is, caused high-temperature flue gas is sent into two level after being mixed with the low-temperature flue gas of regulation bypass duct (13) in the grate furnace (6)
In air preheater (10), and the high temperature entered with main air preheater (10) by smoke pipe in secondary air preheater (10)
Air downstream heat transfer, air themperature is 220 DEG C after heat exchange；It is empty that flue gas after secondary air preheater (10) heat exchange is sent into one-level
In air preheater (9), and the Cryogenic air entered with storage hole (2) by Cryogenic air entrance in main air preheater (9)
Countercurrent flow, air themperature is 110 DEG C after heat exchange, then the air after heat exchange is sent into grate furnace (6) by high temperature air outlet
Interior burning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711070042.2A CN107631304A (en) | 2017-11-03 | 2017-11-03 | A kind of smoke circulating system suitable for cement kiln synergic processing house refuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711070042.2A CN107631304A (en) | 2017-11-03 | 2017-11-03 | A kind of smoke circulating system suitable for cement kiln synergic processing house refuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107631304A true CN107631304A (en) | 2018-01-26 |
Family
ID=61107539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711070042.2A Withdrawn CN107631304A (en) | 2017-11-03 | 2017-11-03 | A kind of smoke circulating system suitable for cement kiln synergic processing house refuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107631304A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945198A (en) * | 2019-03-12 | 2019-06-28 | 天津大学 | an organic waste incinerator |
| CN111998354A (en) * | 2020-07-16 | 2020-11-27 | 安徽上峰杰夏环保科技有限责任公司 | Cement kiln household garbage treatment device and method |
| CN113790455A (en) * | 2021-10-18 | 2021-12-14 | 重庆三峰卡万塔环境产业有限公司 | Grate furnace capable of conveying feeding materials in multiple stages |
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| CN109945198A (en) * | 2019-03-12 | 2019-06-28 | 天津大学 | an organic waste incinerator |
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| CN111998354A (en) * | 2020-07-16 | 2020-11-27 | 安徽上峰杰夏环保科技有限责任公司 | Cement kiln household garbage treatment device and method |
| CN113790455A (en) * | 2021-10-18 | 2021-12-14 | 重庆三峰卡万塔环境产业有限公司 | Grate furnace capable of conveying feeding materials in multiple stages |
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Application publication date: 20180126 |