CN104033905B - System for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation - Google Patents
System for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation Download PDFInfo
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- CN104033905B CN104033905B CN201410284453.1A CN201410284453A CN104033905B CN 104033905 B CN104033905 B CN 104033905B CN 201410284453 A CN201410284453 A CN 201410284453A CN 104033905 B CN104033905 B CN 104033905B
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- heat boiler
- waste heat
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- 239000010849 combustible waste Substances 0.000 title claims abstract description 57
- 239000002918 waste heat Substances 0.000 title claims abstract description 38
- 239000004568 cement Substances 0.000 title claims abstract description 28
- 238000010248 power generation Methods 0.000 title abstract 2
- 239000002912 waste gas Substances 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 53
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 21
- 239000003546 flue gas Substances 0.000 claims description 21
- 239000010802 sludge Substances 0.000 claims description 13
- 239000012716 precipitator Substances 0.000 claims description 12
- 239000010902 straw Substances 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 7
- 238000006555 catalytic reaction Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 abstract description 4
- 239000010813 municipal solid waste Substances 0.000 description 22
- 239000010865 sewage Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000003750 conditioning effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000010791 domestic waste Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002023 wood Substances 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
- Y02E20/12—Heat utilisation in combustion or incineration of waste
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a system for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation and aims to provide a system with high ability to process the combustible waste and guarantee production quality of the cement. The technical scheme includes that the system comprises a generating device, a kiln tail preheater, a kiln head waste heat boiler, a kiln tail waste heat boiler, a collecting device, an incinerator, a raw material vertical mill and a bypass exhaust device; the kiln head waste heat boiler and the kiln tail waste heat boiler are connected with the generating device, a gas inlet of the kiln head waste heat boiler is connected with a waste gas outlet of a clinker cooler, a waste gas outlet of the kiln tail preheater is connected with a gas inlet of the kiln tail waste heat boiler, and a discharging outlet of the kiln tail preheater is connected with a feeding inlet of a feed-end chamber of a rotary kiln; and a smoke outlet of the incinerator is connected to a decomposing boiler of the kiln tail preheater.
Description
Technical field
The present invention relates to a kind of combustible waste material system, specifically a kind of cement kiln is collaborative to process combustible waste material system.
Background technology
Combustible waste material refer to the mankind produce, consumption, life and other activities in produce have certain calorific value and
(external definition is then more extensive, and it is useless that animal activity produces for the solid-state that can burn under certain condition, semisolid discarded object matter
Gurry falls within such), it is exactly generally " rubbish " of calorific value.Combustible waste material mainly includes domestic waste, the village
Family's straw, mud, discarded plastics or rubber, damaged wood furniture, spoil, rotten food, human and animal excreta etc.
Deng.
European Union, in terms of processing the combustible waste materials such as domestic waste, mud, had and changed several times: be initially just to fill out
Based on burying and burning, the lime-ash after burning is also landfilled；The later stage nineties there occurs that several refuse landfill penetrating fluids are let out in succession
Leakage accident, then they revise and the antiseep standards and guidelines of landfill yard are greatly improved；So experienced 6～8
Year, European Union finds that remedial measure cost that they are taken is too high and produces effects less it is impossible to the hidden danger of radical cure secondary pollution；Through
Cautiously and painfully introspect and prove, 2007 so far, moral, Ying Deng state have made new decision-making finally in succession, no longer newly-built flammable
Waste and city life garbage landfill and incinerator factory；The combustible waste of all from now on new generations and rubbish will take other
Safer more economical method, all immediately disposes as much as possible, settles at one go, dissolves clean, does not stay future trouble, as far as possible few with or
Without landfill yard and incinerator, explore the aspects such as anaerobic composting, regenerable solid fuel manufacture, exploitation bio-fuel, simultaneously to water
Bricklayer's's industry dissolve combustible waste prospect also rather good.
The present situation of domestic combustible waste material is, because the combustible waste material yield such as domestic city house refuse is big, to determine
China's offal treatment certain it is however emphasized that " volume reduction ", through groping and practice of over half a century, domestic at present to flammable useless
The main method that gurry is processed is exactly to burn.This method one can accomplish minimizing, the combustible waste material single firing on such as mountain it；
Two can achieve resource, and combustible waste material is used as the energy to generate electricity.Therefore the whole nation from the leadership to the masses big and medium-sized cities are all big
Amount builds the burning power station of the combustible waste materials such as rubbish, straw, mud, and indivedual province has started to be used for landfill in the past
Rubbish again dig out single firing it.
The advanced countries such as America and Europe have begun to abandon burn after landfill processing mode, at home but following the track of the overturned cart, that
What the drawbacks of waste incineration is？Think through research, combustible waste material burns and do not enable the innoxious of offal treatment
It is the fatal disadvantage that combustible waste material burns.Why waste incineration is harmful to, and is because domestic rubbish the like waste does not have
Sorting mechanism, domestic waste rubbish water content many more than 35%, in the burning of conventional grate furnace or fluid bed furnace etc.
During due to needing to heat up, removing moisture removal, and can not burn rapidly, certainly exist one 200-500 DEG C of temperature space, belong to
Middle low temperature burns, and in the presence of chloride (as plastic bag) is a large amount of, burning process just becomes a large amount of manufacture two English
Process.Current garbage burning factory is all first to manufacture two English, then by spraying into the pattern that activated carbon etc. is adsorbed.This is just
For two English, convenience is opened to the pollution of environment and murder by poisoning, wherein have the accident leakage of flue gas to cause two English to enter ring
The reason border, the operating cost such as more active charcoal is high and have Some Enterprises to steal caused by row puts steathily.
Process combustible waste material worked in coordination with by cement kiln suitable advantage, and its natural stable hot environment can utterly destroy two
English, natural alkaline environment can neutralize sour gas, curing heavy metal, the component of rubbish and lime-ash and cement raw material class simultaneously
Seemingly, also can be by rubbish " eating clean ", investment is minimum with processing cost, technological means are flexible.
Cement kiln work in coordination with process combustible waste material can bring a large amount of impact cement qualities harmful components (as potassium, sodium, chlorine,
Sulfur etc.), the ability that process combustible waste material worked in coordination with by cement kiln on the premise of not affecting cement quality at present is limited；Cause
This, work in coordination with, in order to improve cement kiln, the ability processing combustible waste material, some technology employ the method for bypass, but bypass
Leak informaton and can bring extra energy loss, so the amount of leaking informaton typically can control exports total exhaust gas volumn 5%-10% in kiln tail, also omit
Inadequate.
Content of the invention
The purpose of the present invention is to overcome the shortcomings of in above-mentioned background technology, provide can bypass cogeneration cement kiln
Collaborative process combustible waste material system, this system should have higher combustible waste material disposal ability, can guarantee that cement simultaneously
The quality of production.
The technical scheme is that can bypass cogeneration cement kiln work in coordination with process combustible waste material system,
Including TRT, kiln tail preheater, kiln hood waste heat boiler and kiln tail waste heat boiler；Kiln hood waste heat boiler and kiln tail waste heat boiler
TRT is connected by steam circuit, the air inlet of kiln hood waste heat boiler connects the waste gas outlet of chamotte cooler, kiln
The discharging opening of air inlet and kiln tail preheater that the waste gas outlet of tail preheater connects kiln tail waste heat boiler connects kiln in rotary kiln
The charging aperture of tail smoke-box；
It is characterized in that: this system also includes for housing combustible waste material and combustible waste material being delivered to incinerator
Collection device, for burning disposal combustible waste material incinerator, for process incinerator produce lime-ash raw material roller mill and
For drawing the bypass device of kiln tail smoke-box waste gas；The exhanst gas outlet of described incinerator accesses the dore furnace of kiln tail preheater
In；
Described collection device is configured with and ferments catalysis and the heat exchanger dried for combustible waste material, chamotte cooler useless
Gas outlet accesses chimney to discharge waste gas after being sequentially connected heat exchanger and bypass air-introduced machine；
In described bypass device, kiln tail smoke-box is sequentially connected equipment for denitrifying flue gas, air preheat by taking wind pipeline
The air inlet of kiln tail waste heat boiler is accessed after device, hot precipitator, quenching apparatus, bypass waste gas dust settler.
Described collection device includes rubbish and receives storehouse, sludge treatment equipment or/straw reception storehouse.
The mud that described sludge treatment equipment includes sequentially connecting receives the mud feed of storehouse, wet mud storehouse, conveying mud
Pump and the desiccation machine that mud is dried, the waste steam condensation device of discharge after also including the exhaust steam in collection desiccation machine and condensing；
Described desiccation machine accesses in steam circuit to obtain sludge drying institute calorific requirement.
This system also includes the purifying processing device for the gas of collection device inputs incinerator；Purifying processing device
In, the gas that rubbish receives in storehouse or/sludge treatment equipment accesses after air supply duct connects aerator and air preheater
Burning disposal in incinerator, the exhaust gases passes of air preheater are sent into and are taken airduct between equipment for denitrifying flue gas and hot precipitator
To introduce the heat of high-temperature flue gas in road.
Described incinerator is grate type incinerator or fluidized bed incinerator.
Described straw receives in storehouse and is provided with pulverizer.
The invention has the beneficial effects as follows:
1) house refuse and combustible waste material only need to simply sort and can send into incinerator burning, decrease early stage as far as possible
The link processing, thus current cost before saving；
2) make full use of the existing residual heat resources of cement kiln, the air draft heat of tail bypass wind discharging exhaust-heat boiler is used for garbage and sends out
Ferment catalysis and drying, so that combustible waste material more easy firing；
3) in refuse collection storehouse, combustible waste material goes out " foul smell " of generation and just sends into incinerator after system heating, thus
Thoroughly eliminate stink and effectively improve flame temperature；
4) in combustible waste material, sewage oozes out into cesspool, sends into sewage water tank after filtering, and its main component is organic
Thing, has thermolability, is burnt after sewage lifting, irregularly sending into cement kiln head using special pump, reduces at sewage
The investment (relevant device is conventional equipment, and in figure is omitted) of reason system and equipment；
5) in incinerator, the lime-ash such as the slag of generation, flying dust all sends into raw material roller mill, eventually becomes substitutive raw material of cement (every
Ton garbage about can produce alternative materials 90-130kg), and heavy metal pollution is thoroughly eliminated by the solidification of cement；
6) due in rotary kiln dore furnace flue-gas temperature reach more than 850 DEG C, can effectively avoid the formation temperature of two English,
Two English are possibly eliminated greatly；
7) sulfur brought in crude fuel and combustible waste material, chlorine, potassium, sodium part are drawn by bypass device, effectively
Ensure that cement clinker quality is not affected by these harmful components；
8) heat smoke of bypass device is generated electricity after waste heat boiler, can effectively be lifted generated energy 20% with
On；
9) after adopting the present invention, the yield of clinker is constant, heat consumption is constant (also has because combustible waste material forms difference
May reduce heat consumption), power consumption constant, no any adverse effect to cement clinker production line；
10) present invention is simple, burn electric power station system with traditional combustible waste material compared with reduce investment outlay about 50%.
Brief description
Fig. 1 is the structural representation of the present invention.
In figure label declaration: more than rotary kiln 1, kiln tail preheater 2, chamotte cooler 3, dore furnace 4, kiln tail smoke-box 5, kiln tail
Heat boiler 7 (sp), kiln hood waste heat boiler 8 (aqc), kiln tail high-temperature blower 11, aerator 12, TRT 13, wet mud storehouse 14,
Mud feed pump 15, desiccation machine 16, waste steam condensation device 17, incinerator 18, raw material roller mill 19, air preheater 20, heat exchanger
21st, mud receive storehouse 22, rubbish receive storehouse 23, straw receive storehouse 24, pulverizer 25, equipment for denitrifying flue gas 29, raw mill 111,
Dust-precipitator 112 and conditioning Tower 113, steam conveying pipeline 51 (steam conveying pipeline 51 and the condensate line group being back to boiler
Become steam circuit；In figure omit condensate line), take wind pipeline 52, air supply duct 53, hot precipitator 9, quenching apparatus
10th, bypass waste gas dust settler 6, bypass air-introduced machine 30, chimney 26.
Specific embodiment
Below in conjunction with Figure of description, the invention will be further described, but the invention is not limited in following examples.
As shown in figure 1, can bypass cogeneration cement kiln work in coordination with process combustible waste material system, include generate electricity fill
Put 13, kiln tail preheater 2, kiln hood waste heat boiler 8, kiln tail waste heat boiler 7, be used for housing combustible waste material and by combustible waste material
It is delivered to the collection device of incinerator, be used for the incinerator 18 of burning disposal combustible waste material, be used for processing incinerator generation ash
The raw material roller mill 19 of slag, for drawing the bypass device of kiln tail smoke-box waste gas and for by the input of the air of collection device
The purifying processing device of incinerator.
In described rotary kiln 1, the charging aperture of kiln tail smoke-box 5 connects the discharging opening of kiln tail preheater, the waste gas of kiln tail preheater
Outlet connects the air inlet of kiln tail waste heat boiler, and kiln tail waste heat boiler connects TRT by steam circuit；More than kiln tail
The gas outlet of heat boiler is connected with raw mill 111, dust-precipitator 112 and conditioning Tower 113 by kiln tail high-temperature blower 11, and kiln tail preheats
The waste gas outlet of device is connected with raw mill, dust-precipitator and conditioning Tower also by another pipeline；Kiln tail preheater includes dore furnace 4
And cyclone cylinder c1, c2, c3, c4 of plural serial stage (waste gas outlet of cyclone cylinder c1 is connected the air inlet of kiln tail waste heat boiler with c5
Mouthful, and be connected with raw mill, dust-precipitator and conditioning Tower by another pipeline).
The waste gas outlet of described chamotte cooler connects the air inlet of kiln hood waste heat boiler, and kiln hood waste heat boiler passes through steam
Closed circuit connects TRT；The waste gas outlet of chamotte cooler is sequentially connected heat exchanger and is followed by with bypass air-introduced machine 30
Enter chimney 26 to discharge waste gas；(this heat exchanger is used for the fermentation catalysis of combustible waste material and dries).
Described incinerator is grate type incinerator or fluidized bed incinerator, and the exhanst gas outlet of incinerator accesses kiln tail preheating
In the dore furnace of device.
In described bypass device, kiln tail smoke-box is sequentially connected equipment for denitrifying flue gas 29, air by taking wind pipeline 52
Kiln is accessed after preheater 20 (high-temperature flue gas releasing heat), hot precipitator 9, quenching apparatus 10, bypass waste gas dust settler 6
The air inlet (jointly accessing kiln tail waste heat boiler with the waste gas outlet of kiln tail preheater) of tail waste heat boiler.
Described collection device be configured with for combustible waste material ferment catalysis and dry heat exchanger (mud receive storehouse 22,
Rubbish receives storehouse 23, straw receives in storehouse 24 and is each equipped with heat exchanger)；Described collection device includes rubbish and receives storehouse 23, mud
Processing meanss or/straw receive storehouse 24；Described straw receives in storehouse and is provided with pulverizer 25；Described sludge treatment equipment is included sequentially
The mud of connection receives storehouse 22, wet mud storehouse 14, the mud in wet mud storehouse is delivered to the mud feed pump 15 of desiccation machine, is dried
The desiccation machine 16 of mud, waste steam condensation device 17 is collected the exhaust steam in desiccation machine and is discharged after condensing；Useless from desiccation machine
Steam enters in waste steam condensation device and carries out cooling process；The cooling water that waste steam condensation device adopts, can be the dirt of Sewage Plant
Water (waste water of Sewage Plant flows in waste steam condensation device, returns Sewage Plant after taking away the heat of exhaust steam), or tap water
(for using water wisely, be preferably configured cooling tower and form cooling water recirculation system)；Exhaust steam after heat release cooling then enters purification
Processing meanss continue with.
Described desiccation machine accesses in steam circuit；Mud in wet mud storehouse is transported to desiccation machine by mud feed pump
Middle process, the energy needed for mummification is derived from the mixed vapour of two boilers, produces dewatered sludge defeated by mud feed pump after mummification
Deliver in incinerator and burn, the condensate producing after mummification returns TRT.
In described purifying processing device, the gas that rubbish receives in storehouse or/sludge treatment equipment passes through air supply duct 53 even
Connect aerator 12 and air preheater 20 (GAS ABSORPTION heat) accesses in incinerator afterwards and carries out combustion-supporting, the flue gas of air preheater
Passage sends into taking in wind pipeline to introduce the heat of high-temperature flue gas between equipment for denitrifying flue gas and hot precipitator.
Taking the cement clinker production line of 2800 tons of one, certain company daily output as a example:
1st, combustible waste material is transported in collection device and (includes rubbish and receive storehouse, sludge treatment equipment or the reception of/straw
Storehouse), then collection device is delivered to nearly 300 tons daily of combustible waste material in incinerator by mechanical conveying equipment and is burned；
2nd, after combustible waste material burns in incinerator, generation temperature is 700-1000 DEG C, exhaust gas volumn is 22000nm3/h
Heat smoke be admitted in dore furnace, the lime-ash of generation is sent to raw material roller mill；
(exhaust gas volumn accounts for the 30-60% of kiln tail preheater, flue gas temperature by the high alkalinity flue gas of kiln tail smoke-box to take wind pipeline
Degree be not less than 900 DEG C) be sequentially sent to equipment for denitrifying flue gas, air preheater, hot precipitator, quenching apparatus, bypass give up
Gas dust settler, kiln tail waste heat boiler；
The exhaust gas volumn producing after incinerator incineration of combustible garbage and the exhaust gas volumn substantially phase entering in bypass device
Deng being balanced with the flue gas keeping dore furnace；The flue gas taking wind pipeline when air preheater, will from rubbish receive storehouse or/
It is transported in incinerator after the air preheat of sludge treatment equipment；
The waste gas that chamotte cooler is discharged also inputs in the heat exchanger of collection device, for flammable useless in collection device
Gurry carries out fermentation catalysis and dries, and by bypass waste gas air-introduced machine by waste gas suction smoke stack emission；
3rd, the steam that kiln hood waste heat boiler and kiln tail waste heat boiler produce jointly is sent in the steam turbine of TRT and is carried out
Generate electricity；The lime-ash that bypass waste gas dust settler, kiln hood waste heat boiler and kiln tail waste heat boiler are discharged sends into raw material roller mill；High temperature
It is transmitted back to raw material storage (cement raw material storehouse) after the lime-ash cooling that cleaner unit is discharged.
The effect of the present invention is:
1st, the present invention is substantially improved the exhaust gas volumn (increasing to 30-60%) of bypass, and the hot cigarette that bypass is extracted
Gas is used for cogeneration；
2nd, by chamotte cooler, flue gas out is introduced in the heat exchanger of collection device the present invention, thus to combustible waste material
Heated, improve the combustibility of combustible waste material,
3rd, in order to improve the efficiency of combustion of garbage further, the present invention also burns in the setting in wind pipeline that takes of bypass
Burn the air preheater required for stove, pathogenic wind-warm can be brought up to 200-300 DEG C.
4th, because cement kiln bypass can bleed off substantial amounts of harmful components, ensure that cement kiln has bigger space
To receive more combustible waste materials, the flue gas that bypass is drawn is used for preliminary heating combustible waste material and generating, not only carries
The combustibility of high combustible waste material is so that pollution-free in combustible waste material processing procedure, and combustible waste material produces after burning
Raw heat energy is fully used, and increased generated energy, cement kiln clinker yield is constant simultaneously, heat consumption of clinker is constant, grog
Power consumption is constant, clinker quality is unaffected, and the heat energy of whole system has obtained utilizing to greatest extent.
Claims (1)
1. can bypass cogeneration cement kiln work in coordination with process combustible waste material system, including TRT (13), kiln tail
Preheater (2), kiln hood waste heat boiler (8) and kiln tail waste heat boiler (7)；Kiln hood waste heat boiler and kiln tail waste heat boiler pass through steam
Closed circuit connects TRT, and the air inlet of kiln hood waste heat boiler connects the waste gas outlet of chamotte cooler (3), and kiln tail preheats
The discharging opening of air inlet and kiln tail preheater that the waste gas outlet of device connects kiln tail waste heat boiler connects kiln tail cigarette in rotary kiln (1)
The charging aperture of room (5)；
It is characterized in that: this system is also included for housing combustible waste material and the collection that combustible waste material is delivered to incinerator
Device, the incinerator (18) for burning disposal combustible waste material, the raw material roller mill (19) for processing incinerator generation lime-ash
And for drawing the bypass device of kiln tail smoke-box waste gas；The exhanst gas outlet of described incinerator accesses dividing of kiln tail preheater
In solution stove (4)；
Described collection device is configured with the heat exchanger (21) of ferment for combustible waste material catalysis and drying, chamotte cooler (3)
Waste gas outlet be sequentially connected heat exchanger and bypass air-introduced machine (30) and access chimney (26) afterwards to discharge waste gas；
In described bypass device, kiln tail smoke-box is sequentially connected equipment for denitrifying flue gas (29), air preheat by taking wind pipeline
Device (20), hot precipitator (9), quenching apparatus (10), bypass waste gas dust settler (6) access entering of kiln tail waste heat boiler afterwards
QI KOU；
Described collection device includes house refuse and receives storehouse (23), sludge treatment equipment and/or straw reception storehouse (24)；
The mud that described sludge treatment equipment includes sequentially connecting receives storehouse (22), wet mud storehouse (14), the mud of conveying mud
Feed pump (15) and the desiccation machine (16) that mud is dried, discharge after also including the exhaust steam in collection desiccation machine and condensing
Waste steam condensation device (17)；Described desiccation machine accesses in steam circuit to obtain sludge drying institute calorific requirement；
This system also includes the purifying processing device for the gas of collection device inputs incinerator；In purifying processing device,
The gas that house refuse receives in storehouse and/or sludge treatment equipment connects aerator (12) and air preheater by air supply duct
(20) access burning disposal in incinerator afterwards, the exhaust gases passes of air preheater send into equipment for denitrifying flue gas and hot precipitator it
Between take in wind pipeline with introduce high-temperature flue gas heat；
Described straw receives in storehouse and is provided with pulverizer (25).
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| CN201410284453.1A CN104033905B (en) | 2014-06-23 | 2014-06-23 | System for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104807017B (en) * | 2015-05-08 | 2017-05-17 | 北京金隅北水环保科技有限公司 | System for treating industrial waste in combination with thermal desorption and use method |
| CN108317864B (en) * | 2018-03-22 | 2024-02-02 | 成都建筑材料工业设计研究院有限公司 | Cement kiln deep waste heat recovery cooperated garbage incineration system |
| CN108298844A (en) * | 2018-04-08 | 2018-07-20 | 天津健威泽节能环保科技股份有限公司 | A kind of clinker drop alkali device and implementation method |
| CN109340769A (en) * | 2018-09-21 | 2019-02-15 | 湖南顶立科技有限公司 | The exhaust gas treating method and system of discarded circuit board pyrolysis |
| CN110006246B (en) * | 2019-03-22 | 2023-10-17 | 北京科太亚洲生态科技股份有限公司 | Device and method for disposing waste by preheating raw materials through rotary kiln |
| CN110762542A (en) * | 2019-11-04 | 2020-02-07 | 中国恩菲工程技术有限公司 | System and method for sludge and hazardous waste co-disposal |
| CN111998667A (en) * | 2020-07-16 | 2020-11-27 | 安徽上峰杰夏环保科技有限责任公司 | Bypass air discharging system for cement kiln co-processing |
| CN111841322B (en) * | 2020-07-29 | 2022-08-19 | 安徽萃智环保科技有限公司 | Denitration and discharge method for cement kiln |
| CN114087612B (en) * | 2022-01-04 | 2022-04-26 | 山西省安装集团股份有限公司 | Distributed biomass and garbage incineration treatment system |
| CN115745439B (en) * | 2022-11-03 | 2024-02-23 | 天津水泥工业设计研究院有限公司 | Method and process system for calcining cement by using low-carbon environment-friendly alternative fuel |
| CN116147371A (en) * | 2023-02-22 | 2023-05-23 | 中国中材国际工程股份有限公司 | System and method for improving substitution rate of fossil fuel in cement industry |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0776962B1 (en) * | 1995-11-28 | 2002-10-02 | Ebara Corporation | Method and apparatus for treating wastes by gasification |
| CN1556349A (en) * | 2004-01-05 | 2004-12-22 | 朱剑峰 | Domestic garbage treatment and cement rotary kiln combined production technology |
| JP2011036796A (en) * | 2009-08-11 | 2011-02-24 | Taiheiyo Cement Corp | Drying treatment system for organic sludge and drying treatment method therefor |
| JP6026075B2 (en) * | 2010-05-18 | 2016-11-16 | 太平洋セメント株式会社 | Organic sludge fuelizer |
| CN102452802B (en) * | 2010-10-21 | 2013-09-11 | 川崎重工业株式会社 | Treating equipment for waste containing sludge |
| CN203980292U (en) * | 2014-06-23 | 2014-12-03 | 杨义军 | Cement kiln associated treatment combustible waste material system that can bypass cogeneration |
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