CN104438296A - Dry-process rotary cement kiln cooperative household garbage treatment system and treatment method - Google Patents
Dry-process rotary cement kiln cooperative household garbage treatment system and treatment method Download PDFInfo
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- CN104438296A CN104438296A CN201410740293.7A CN201410740293A CN104438296A CN 104438296 A CN104438296 A CN 104438296A CN 201410740293 A CN201410740293 A CN 201410740293A CN 104438296 A CN104438296 A CN 104438296A
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Abstract
The invention discloses a dry-process rotary cement kiln cooperative household garbage treatment system. The dry-process rotary cement kiln cooperative household garbage treatment system comprises a garbage pre-treatment system, a garbage incineration system, a flue gas purification system, a leachate treatment system, a cement clinker sintering system and a cement proportioning system. By using the dry-process rotary cement kiln cooperative household garbage treatment system disclosed by the invention for treating municipal domestic garbage, heat energy, ash, slag and leachate are completely utilized, and zero contaminant discharge is achieved during the whole treatment process; meanwhile, the generation of dioxin can also be effectively controlled and secondary pollution is avoided, thus realizing the requirements of 'reduction, resourcezation and harmlessness' of domestic garbage treatment.
Description
Technical field
The present invention relates to technical field of domestic garbage treatment, particularly relate to a kind of dry method cement rotary kiln associated treatment house refuse system and processing method.
Background technology
Along with the raising of people's living standard, the discharge of house refuse also gets more and more.At present, China's domestic waste volume of cargo in storage has reached 6,000,000,000 tons. and occupy cultivated land 500,000,000 square metres, annual generation 200,000,000 tons of domestic wastes, also rapidly will increase with the speed of 9%.The house refuse of these substantial amounts forms to city and greenbelt ecological environment the threat be on the rise.
Traditional waste disposal method has landfill method, composting process and burning method, and Urban Garbage Treatment in China is started late, main based on sanitary landfills at present.Although establish waste incineration and power plant in some cities, but it is few owing to there is treating capacity, processing procedure is along with harmful gas (bioxin), the emission problem such as sewage (percolate), waste residue (content of beary metal is high), still there is certain dispute at present in waste incineration method.Relevant expert just once appealed, China will absorb Japan and popularize garbage incinerating power plant in the process problem of municipal refuse the eighties, do one's utmost again at present to solve the experience and lessons of secondary pollution, conscientiously study and strive for " minimizing, innoxious, resource " process of municipal refuse.
For process domestic waste provides excellent condition, overseas utilization cement kiln synergic processing house refuse has nearly 30 years history to unique production technology of the manufacture of cement high temperature of more than 1000 DEG C (alkaline gas divides).Utilize cement kiln associated treatment domestic waste, cement firing system can be utilized on the one hand to clear up foul smell in rubbish storage, pretreatment and burning process and noxious material; On the other hand, the lime-ash that waste incineration produces can as cement raw material or composite material, and the noxious material in rubbish can resolve into corresponding inorganic matter and heavy metals immobilization in clinker; Moreover the part high-temp waste gas that quality coal in cement kiln systems produces can as the supplemental heat source of waste incineration or whole thermal source, and make the burning process of rubbish more abundant, the discharge of bioxin is even eliminated in further reduction.
Published as follows with the Patents of cement kiln associated treatment rubbish at present:
China Patent No. 200610076668.X, cement rotary kiln and incinerator Combined Treatment urban garbage system.This technology utilizes the tertiary air of cooling clinker as waste incineration air, and the heat smoke produced after burning is introduced kiln end system of cement kiln and provided heat for cement slurry decomposes.
China Patent No. 201220059555.X, cement kiln associating rotary furnace high temperature garbage Efficient air gasification cooperative disposal system.This technology adopts rotary incinerator, utilizes combustible gas that rotary furnace gasification and pyrolysis domestic waste produces as the high-temperature fuel in quality coal in cement kiln systems dore furnace, utilizes dregs of incinerator as cement raw material.
China Patent No. 201020268259.1, refuse disposal system.This technology utilizes gasification furnace to carry out smooth combustion to rubbish, and gasification furnace is with coal dust or broken coal for fuel, and the solid waste gas that burning produces enters dore furnace and burns further, and the incombustible that burning produces is further processed by incombustible discharger.
China Patent No. 200410066088.3, utilizes the method for New Type Dry-process Cement Production system process domestic waste.Domestic waste after collection is carried out sorting, break process by this technology, and is divided into plastics, combustible and noncombustibles.Wherein, when the total content of chlorine in plastics exceedes control criterion requirement, secondary sorting is carried out to the plastics sub-elected and combustible, the plastic containing chlorine sub-elected separately is dealt with; Combustible sends into firing system as manufacture of cement alternative fuel, and noncombustibles enters cement raw material feed proportioning system.
China Patent No. 200910114490.7, rotary cement kiln burning method as novel dry method of household garbage.This technology adopts even refuse grinder, uniform rotary air locking feeder, garbage container equipment, and the mass effect of refuse classification, collection dress, broken and feeding process is improved in the sieving garbage workshop that design is closed.The lime-ash of non-combustible waste and combustiblerefuse uses as the composite material of cement raw material.
China Patent No. 200810209589.0, the method for processing urban domestic garbage of kiln external incineration furnace.This technology utilizes high temperature in rotating water stall and negative pressure, high-temperature flue gas house refuse after dehydration, oven dry having been fired in incinerator rubbish sucks in cement kiln and carries out second-time burning, pernicious gas is thoroughly decomposed, and its heat can replace a part coal-fired simultaneously.
China Patent No. 201210234522.9, a kind of cinder from refuse incineration method of disposal and implementation system.This technology rubbish is after incinerator burns, and flying dust enters dore furnace with incineration flue gas, and slag enters raw material mixing system after air cooling, enters incinerator with the hot-air after hot slag heat exchange, dries and burn for rubbish.
China Patent No. 201220104623.X, a kind of grate incinerator and cement kiln coexist and put the system of house refuse.This technology adopts grate incinerator, the heat smoke that waste incineration produces, and by pipeline and high temperature adjustable valve, under the swabbing action of kiln system negative pressure, is drawn into cement kiln dore furnace; First air required for incinerator and Secondary Air, have employed the lingering remnants of past customs 150 ~ 200 DEG C of kiln hood grate-cooler; It is airtight that garbage storing pond is in negative pressure, and foul smell is pumped into cement-kiln grate-cooler through blower fan; Percolate sprays into cement kiln end uptake flue by time spray pump and burns.
China Patent No. 200910065584.X, a kind of process system of cement rotary kiln process domestic waste.In this technology, rubbish enters auxiliary incinerator after manual sorting, predrainage, break process to carry out drying and burning, the waste gas that waste incineration produces and the heat discharged enter as part of heat energy in cement kiln preheating decomposition system, and incineration residue enters cement kiln by cement decomposing furnace.
China Patent No. 200910258960.7, the refuse disposal system of application in Cement Dry Process Kiln Product is produced and processing method thereof.This technology adopts incinerator, and the foul smell of garbage storing storage is introduced incinerator by blower fan, and cinder from refuse incineration enters cement slurry system or automatic Mixed Materials System of Cement, and the part of ash in refuse gasification incinerator is sent to dore furnace and carries out secondary burning decomposition; The thermal source of incinerator is from coal dust firing.
In technical scheme involved in published patent above, the heat smoke produced in incinerator is introduced cement kiln dore furnace and is carried out secondary burning decomposition by majority, or rubbish carried out pretreatment and be divided into combustible and noncombustibles is used respectively, the slag that waste incineration produces is then multiplex makes cement raw material or cement mixture carries out recycling.But, due to the feature that municipal refuse existence and stability is poor, calorific value is low, moisture is high, when not sorting, incinerator outlet is generally difficult to maintain more than 900 DEG C, the exhaust gas volumn that waste incineration produces is large, again containing higher moisture, sulphur, chlorine and heavy metal etc., after introducing cement kiln dore furnace, the Yield and quality reducing cement and stability will be affected, bring certain difficulty also to the operation of cement rotary kiln.
Summary of the invention
The object of the invention is the technological deficiency for existing in prior art, the dry method cement rotary kiln associated treatment house refuse system providing a kind of environmental protection to economize on resources again, comprises wastes pre-processing system, refuse burning system, flue gas purification system, percolation liquid treating system, cement clinker burning system and automatic Mixed Materials System of Cement; Wherein:
The outlet of the garbage outlet of wastes pre-processing system, foul smell and percolate outlet are connected with the percolate entrance of the garbage inlet of described refuse burning system, cement clinker burning system foul smell entrance and percolation liquid treating system respectively;
The slag outlet of refuse burning system, useless exhanst gas outlet, vapours outlet are connected with the generating feed(raw material)inlet of the feed(raw material)inlet of automatic Mixed Materials System of Cement, flue gas purification system entrance and cement clinker burning system respectively;
The flying dust outlet of flue gas purification system is connected with the garbage inlet of refuse burning system;
Middle water out, the solid discharge of percolation liquid treating system are connected with the hot slag outlet of refuse burning system, the grog feed(raw material)inlet of cement clinker burning system respectively;
The waste gas outlet of cement clinker burning system is connected with the thermal source inlet of refuse burning system.
Described wastes pre-processing system comprises discharging platform, airtight negative pressure garbage warehouse, plate hello machine and disintegrating machine; Raw refuse storage hole, shredding refuse storage hole, raw refuse driving grab bucket, shredding refuse driving grab bucket, raw refuse hopper and shredding refuse hopper are set in described airtight negative pressure garbage warehouse respectively; Wherein, discharging platform stores up to cheat by blanking pipe and raw refuse and is connected, and raw refuse hopper is connected with disintegrating machine by the plate of below machine of feeding, and disintegrating machine outlet is stored up to cheat with shredding refuse and is connected; The garbage outlet of shredding refuse feed hopper bottom is connected with the garbage inlet of refuse burning system; Raw refuse storage hole is connected with the percolate entrance of percolation liquid treating system with bottom, shredding refuse storage hole; Raw refuse driving grab bucket and shredding refuse driving grab bucket are located at the top of airtight negative pressure garbage warehouse inside, can move freely respectively between raw refuse storage hole and raw refuse hopper and between shredding refuse storage hole and shredding refuse hopper.
Described refuse burning system comprises feed fire grate, incinerator, waste heat boiler, slag bath and bucket chain conveyor; Wherein, the entrance of feed fire grate, outlet are connected with the garbage outlet of described wastes pre-processing system, incinerator entrance respectively; Arrange slag bath below incinerator, the hot slag outlet bucket chain conveyor of slag bath is communicated with cement clinker burning system entrance; Described incinerator is connected with waste heat boiler by top flue, and the useless exhanst gas outlet of waste heat boiler is connected with the entrance of flue gas purification system by pipeline, and vapours outlet is connected with the generating feed(raw material)inlet of cement clinker burning system.
Described flue gas purification system comprises SNCR denitrating system, half dry type depickling reaction tower, lime white preparation system, active carbon storage and spraying system, quick lime storage and spraying system, bagroom, fly ash carry machine and flying dust storehouse; Wherein, the smoke inlet of half dry type depickling reaction tower is connected with the useless exhanst gas outlet of refuse burning system waste heat boiler and the outlet of lime white preparation system respectively with material inlet, and the exhanst gas outlet of half dry type depickling reaction tower is connected with described bagroom entrance and flying dust storehouse entrance respectively with material outlet; The outlet of bagroom is connected with a chimney by a blower fan, and the flying dust collected in bagroom is connected with flying dust storehouse entrance by the fly ash carry machine arranged below it; The outlet of SNCR denitrating system by Pipe installing in described incinerator uptake flue; Active carbon storage and spraying system and quick lime is stored in a warehouse and spraying system is successively set on the pipeline between half dry type depickling reaction tower and bagroom; The outlet in flying dust storehouse is connected with the garbage inlet of described refuse burning system.
Described percolation liquid treating system comprises diafiltration liquid pool and leachate purification system; Wherein, the entrance and exit of diafiltration liquid pool exports with the percolate of wastes pre-processing system respectively, leachate purification system entry is connected; The solid discharge of leachate purification system is connected with the grog feed(raw material)inlet of cement clinker burning system and the slag bath of refuse burning system respectively with middle water out.
Described cement clinker burning system comprises dore furnace, rotary kiln, kiln hood grate-cooler, kiln hood electric cleaner, kiln hood electricity generation boiler, Steam Turbine and blower fan; Wherein, decomposition furnace outlet is connected with rotary kiln entrance, rotary kiln outlet is connected with kiln hood grate-cooler entrance, and the outlet of kiln hood grate-cooler first thermal source outlet, Secondary Heat Source is connected with kiln hood electricity generation boiler entrance, kiln hood electric cleaner entrance, refuse burning system thermal source inlet respectively with waste gas outlet; Kiln hood electricity generation boiler is connected with Steam Turbine entrance by pipeline; The outlet of kiln hood electric cleaner is connected with a chimney by blower fan.
A further object of the invention is a kind of method providing dry method cement rotary kiln associated treatment house refuse, and use above-mentioned dry method cement rotary kiln associated treatment house refuse system, concrete steps are:
(1), described house refuse is processed into foul smell, solid refuse and percolate through wastes pre-processing system;
(2), the described foul smell that obtains of step (1) enters cement clinker burning system and burns and decompose, and produces waste gas;
(3) the described solid refuse that, step (1) obtains burns into hot slag through refuse burning system, the useless flue gas of generation simultaneously and vapours after heat exchange; Vapours enters cement clinker burning system and participates in generating;
(4) the described percolate that step (1) obtains filters through percolation liquid treating system and obtains middle water and residue, and described residue enters cement clinker burning system and carries out burning decomposition;
(5) the hot slag that, step (3) obtains enters automatic Mixed Materials System of Cement as raw material and prepares cement after the described middle water cooling that step (4) obtains;
(6) the useless flue gas that, step (3) obtains enters air after flue gas purification system process; The flying dust that flue gas purification system process is left returns to refuse burning system and again burns;
(7) waste gas that, step (2) obtains returns to the thermal source of refuse burning system as refuse burning system.
Step (1) described house refuse through the detailed process of wastes pre-processing system process is: described house refuse is first weighed, then discharging stores fermentation (7-10 days) to raw refuse storage hole, finally broken.
The detailed process that described in step (3), solid refuse burns through refuse burning system is: solid refuse produces hot slag and heat and to give up flue gas after burning, and the clinker that the slag that hot slag obtains after cooling, cement clinker burning system obtain all is admitted to automatic Mixed Materials System of Cement and utilizes as the raw material preparing cement; The useless flue gas of heat obtains vapours and useless flue gas after heat exchange, and vapours input cement clinker burning system participates in generating, and useless flue gas is through flue gas purification system process.
In step (6), useless flue gas through the detailed process of flue gas purification system process is: useless flue gas enters in air after carrying out purifying and dedusting; The flying dust produced in described purifying and dedusting process again feeds refuse burning system circulation and burns.
Compared with prior art, the invention has the beneficial effects as follows:
(1) the high-temperature hot flue gas that gives up that, waste incineration produces enters waste heat boiler, the vapours obtained through heat exchange enters the original Steam Turbine of cement clinker burning system and generates electricity, useless flue gas in waste heat boiler after heat exchange directly enters air after flue gas purification system process, avoids the impact on cement clinker burning system;
(2), be thoroughly eliminate bioxin in flying dust that waste incineration produces, the flying dust collected through flue gas purification system reenters incinerator to carry out circulation and burns until elimination;
(3), percolate after percolation liquid treating system process, the middle water obtained enters slag bath, cooling incinerator discharge hot slag.Hot slag effectively can control the generation of bioxin after over-quenching; Meanwhile, the method Appropriate application percolate, protects environment, has saved water resource;
(4), the residue that obtains of the percolation liquid treating system dore furnace that enters cement clinker burning system burns, and as the one in clinker raw material, can turn avoid the pollution to environment;
(5) waste gas that the main heating source, needed for incinerator burning produces from kiln hood grate-cooler, waste gas after the dedusting of kiln hood electric cleaner as a supplement thermal source also enters incinerator, the waste gas using kiln hood grate-cooler to produce substitutes fire coal as main heating source, has both protected environment and has again reduced production cost; And the waste gas after the dedusting of kiln hood electric cleaner compensate for the shortcoming of shortage of heat in incinerator when adopting merely kiln hood grate-cooler waste gas.
Accompanying drawing explanation
Figure 1 shows that the schematic flow sheet of present system disposal of refuse;
Figure 2 shows that the structural representation of wastes pre-processing system in present system;
Figure 3 shows that the structural representation of refuse burning system in present system;
Figure 4 shows that the invention process cement clinker burning system schematic diagram;
Figure 5 shows that the structural representation of percolation liquid treating system in present system;
Figure 6 shows that the structural representation of flue gas purification system in present system.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, further illustrate content of the present invention, and the present invention is further elaborated, but these embodiments there is any restriction to the present invention absolutely not.Those skilled in the art under the enlightenment of this description to the embodiment of the present invention in any variation of doing all will belong in the scope of claims of the present invention.
Dry method cement rotary kiln associated treatment house refuse system provided by the invention, as shown in Figure 1, comprises wastes pre-processing system, refuse burning system, flue gas purification system, percolation liquid treating system, cement clinker burning system and automatic Mixed Materials System of Cement.Wherein, wastes pre-processing system is used for storage and the fragmentation of house refuse, the garbage outlet of this system is connected with the garbage inlet of refuse burning system, foul smell outlet is connected with the foul smell entrance (arranging on the kiln hood grate-cooler of cement clinker burning system) of cement clinker burning system, and percolate outlet is connected with the percolate entrance of percolation liquid treating system; Refuse burning system is for burning pretreated solid refuse, the hot slag outlet that this system produces enters automatic Mixed Materials System of Cement (clinker obtained with cement clinker burning system is processed into cement after mixing with other cement raw materials in automatic Mixed Materials System of Cement further) through cooling as raw material, the heat that this system the obtains flue gas that gives up obtains vapours and useless flue gas after residual heat boiler for exchanging heat, useless exhanst gas outlet is connected with the entrance of flue gas purification system, and vapours enters cement clinker burning system and participates in generating; Flue gas purification system is used for, to the absorption of harmful substance in waste gas generated by burning garbage and collection, making purified gas meet national atmospheric emission standard, and the flying dust outlet of this system is connected with the garbage inlet of refuse burning system; Percolation liquid treating system is used for purifying percolate, purification thing can enter cement clinker burning system and recycle, the middle water out of this system is connected with the hot slag outlet of refuse burning system, and solid discharge is connected with cement clinker burning system clinker feed(raw material)inlet; Cement clinker burning system be used for clinker production, to provide for refuse burning system thermal source, for refuse burning system and percolation liquid treating system product utilization and consume decomposition place be provided, the outlet of the waste gas of this system is connected with the thermal source inlet of refuse burning system.
Wastes pre-processing system comprises platform scale 1, discharging platform 2, airtight negative pressure garbage warehouse 12, plate hello machine 6 and disintegrating machine 7; Raw refuse storage hole 3, shredding refuse storage hole 8, raw refuse driving grab bucket 4, shredding refuse driving grab bucket 9, raw refuse hopper 5 and shredding refuse hopper 10 are set in airtight negative pressure garbage warehouse 12 respectively; Wherein, the entrance that discharging platform 2 stores up hole 3 by blanking pipe and raw refuse is connected, raw material garbage storing hole 3 is other is provided with shredding refuse storage hole 8, and raw material rubbish hopper 5 is fed machine 6 by the plate being located at below and is connected with disintegrating machine 7, and disintegrating machine 7 exports and stores up hole 8 entrance with shredding refuse and be connected; Garbage outlet bottom shredding refuse hopper 10 is connected with the garbage inlet of this system by the feed fire grate 13 of refuse burning system; Raw refuse storage hole 3 is connected with the percolate entrance of percolation liquid treating system with the percolate outlet arranged bottom shredding refuse storage hole 8; Raw refuse driving grab bucket 4 and shredding refuse driving grab bucket 5 are separately positioned on the top in airtight negative pressure garbage warehouse 12, can left and right, up and down, front and back any direction moves, point other act as: raw refuse hopper 5 put into by the solid refuse that raw refuse driving grab bucket 4 is used for raw refuse to store up hole 3, shredding refuse driving grab bucket 5 by shredding refuse the solid refuse stored up in hole 8 after fragmentation put into shredding refuse hopper 10.
Refuse burning system comprises feed fire grate 13, incinerator 14, slag bath 15, bucket chain conveyor 16, waste heat boiler 17 and blower fan 19 and forms.Wherein, the entrance of feed fire grate 13, outlet are connected with the garbage outlet of wastes pre-processing system, incinerator 14 entrance respectively; Arrange slag bath 15 below incinerator, the hot slag of slag bath 15 enters automatic Mixed Materials System of Cement by bucket chain conveyor 16 after cooling; Incinerator 14 is connected with waste heat boiler 17 by top flue, useless exhanst gas outlet after waste heat boiler 17 heat exchange is connected with the entrance of flue gas purification system, the vapours that heat exchange obtains is connected with the generating feed(raw material)inlet of cement clinker burning system, for generating.
Flue gas purification system comprises SNCR (SNCR) denitrating system 30, half dry type depickling reaction tower 31, lime white preparation system 32, active carbon storage and spraying system 33, quick lime storage and spraying system 34, bagroom 35, fly ash carry machine 36, flying dust storehouse 37, blower fan 38 and chimney 39.Wherein, (SNCR denitration system is that is gas denitration before first heat exchanging before being located at waste heat boiler above the incinerator that SNCR denitration system 30 is arranged on refuse burning system in flue, again through residual heat boiler for exchanging heat), for the denitrating flue gas for passing through; The smoke inlet of half dry type depickling reaction tower 31 is connected with the outlet of lime white preparation system 32 with the useless exhanst gas outlet of refuse burning system waste heat boiler 17 respectively with material inlet, and the exhanst gas outlet of half dry type depickling reaction tower 31 is connected with bagroom entrance 35, flying dust storehouse 37 entrance respectively with material outlet; The gas vent of bagroom 35 is connected with chimney 39 by blower fan 38, and the flying dust collected in bagroom 35 is connected with flying dust storehouse 37 entrance by the fly ash carry machine 36 arranged below it; The outlet of SNCR denitration system 30 is connected with the shower nozzle 18 be arranged in incinerator uptake flue by pipeline; Active carbon storage and spraying system 33 side arrange quick lime storage and spraying system 34, active carbon storage and spraying system 33 and quick lime store in a warehouse and spraying system 34 is located between half dry type depickling reaction tower 31 and bagroom 35, make flue gas enter active carbon storage and spraying system 33 and quick lime successively and store in a warehouse and spraying system 34; The outlet in flying dust storehouse 37 is connected with the garbage inlet of refuse burning system.
Percolation liquid treating system comprises diafiltration liquid pool 28 and leachate purification system 29.Wherein, the entrance and exit of diafiltration liquid pool 28 exports with the percolate of wastes pre-processing system respectively, leachate purification system 29 entrance is connected; The solid discharge of leachate purification system 29 is connected with the grog feed(raw material)inlet of cement clinker burning system and the slag bath 15 of refuse burning system respectively with middle water out.
Cement clinker burning system comprises dore furnace 20, rotary kiln 21, kiln hood grate-cooler 22, kiln hood electric cleaner 23, kiln hood electricity generation boiler 24, Steam Turbine 25, blower fan 26 and chimney 27.Wherein, enter in dore furnace 20 together with the residue that leachate purification system 29 is discharged and other raw material preparing needed for clinker, be processed into clinker; The foul smell that wastes pre-processing system produces enters kiln hood grate-cooler 22 burning and resolves into waste gas; The outlet of dore furnace 20 is connected with rotary kiln 21 entrance, rotary kiln 21 exports and is connected with kiln hood grate-cooler 23 entrance, and kiln hood grate-cooler 22 thermal source outlet is connected with kiln hood electricity generation boiler 24 entrance, kiln hood electric cleaner 25 entrance, refuse burning system thermal source inlet respectively; Kiln hood electricity generation boiler 24 is connected with Steam Turbine 25 entrance by pipeline; The slag that kiln hood grate-cooler 22 outlet material, refuse burning system obtain all enters automatic Mixed Materials System of Cement to be continued to be processed into cement; Kiln hood electric cleaner 25 is exported and is connected with chimney 27 by blower fan 26.
Automatic Mixed Materials System of Cement is existing conventional cement system of processing, for refuse burning system is produced cooled slag, cement clinker burning system produce clinker and other Raw material processings prepared needed for cement become cement.
Based on above system, dry method cement rotary kiln associated treatment house refuse detailed process provided by the invention is: first weigh through platform scale 1 after rubbish transports factory by Special dumpcart, be transported to discharging platform 2 again, unload through discharging platform 2 and store to raw refuse storage hole 3, rubbish will press in factory's time pile up separately in pond, standing a period of time obtains fully fermentation rear (7 ~ 10 days), is fed raw refuse hopper 5 by raw refuse driving grab bucket 4.Feeding machine 6 through plate after rubbish draws off from raw refuse hopper 5 is sent in refuse grinder 7, and the rubbish after fragmentation enters in shredding refuse storage hole 8 and stores for future use.Rubbish in shredding refuse storage hole 8 is fed in shredding refuse hopper 10 by shredding refuse driving grab bucket 9 again, and the rubbish drawn off bottom rubbish hopper 10 will be fed in incinerator 14 by feed fire grate 13 and burn.
The waste gas of waste incineration in incinerator 14 first carries out heat exchange through waste heat boiler 17, the Steam Turbine 25 that vapours in waste heat boiler 17 enters cement clinker burning system participates in generating, after useless flue gas in waste heat boiler after heat exchange enters into the purification of half dry type depickling reaction tower 31 after SNCR denitration system denitration, to by blower fan 38 be introduced in chimney 39 after gas through bagroom 35 dedusting and enter in air again, the waste gas entering connecting pipe between dry type depickling reaction tower 31 and bagroom 35 again will be stored in a warehouse by active carbon and be sprayed active carbon and quick lime purifies in spraying system 33 and quick lime storage and spraying system 34, the flying dust that dry type depickling reaction tower 31 and bagroom 35 are collected enters flying dust storehouse 37 and stores, and the flying dust that flying dust storehouse 37 draws off again feeds circulation in incinerator 14 by feed fire grate 13 and burns.Whole thermals source in incinerator 14 required for waste incineration are all from cement clinker burning system, and wherein, main heating source comes from the kiln hood grate-cooler 22 of cement clinker burning system, and all the other thermals source are from the waste gas of kiln hood electric precipitation 23 dedusting.Hot slag in incinerator 14 by unload to incinerator 14 export below arrange slag bath 15 li, hot slag is sent to automatic Mixed Materials System of Cement by bucket chain conveyor 16 in slag bath after water-cooled.Water in all being formed from percolation liquid treating system process with water needed for hot cooling of furnace slag; In leachate purification system 29, the remaining residue dore furnace 20 be also admitted in cement clinker burning system carries out burning decomposition recycling.
House refuse is after this process process, the slag that waste incineration produces and the clinker that cement clinker burning system obtains finally all are utilized by automatic Mixed Materials System of Cement, flying dust after circulation is burned in its composition bioxin thoroughly eliminated, and percolate after treatment its percolate and residue be also fully utilized, whole processing procedure zero release of pollutant; And the waste gas produced after kiln hood grate-cooler and the dedusting of kiln hood electric cleaner in cement clinker burning system is introduced into incinerator as thermal source, more reduces the energy consumption of whole system.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a dry method cement rotary kiln associated treatment house refuse system, is characterized in that, comprises wastes pre-processing system, refuse burning system, flue gas purification system, percolation liquid treating system, cement clinker burning system and automatic Mixed Materials System of Cement; Wherein:
The outlet of the garbage outlet of wastes pre-processing system, foul smell and percolate outlet are connected with the percolate entrance of the garbage inlet of described refuse burning system, cement clinker burning system foul smell entrance and percolation liquid treating system respectively;
The slag outlet of refuse burning system, useless exhanst gas outlet, vapours outlet are connected with the generating feed(raw material)inlet of the feed(raw material)inlet of automatic Mixed Materials System of Cement, flue gas purification system entrance and cement clinker burning system respectively;
The flying dust outlet of flue gas purification system is connected with the garbage inlet of refuse burning system;
Middle water out, the solid discharge of percolation liquid treating system are connected with the hot slag outlet of refuse burning system, the grog feed(raw material)inlet of cement clinker burning system respectively;
The waste gas outlet of cement clinker burning system is connected with the thermal source inlet of refuse burning system.
2. dry method cement rotary kiln associated treatment house refuse system according to claim 1, is characterized in that, described wastes pre-processing system comprises discharging platform, airtight negative pressure garbage warehouse, plate hello machine and disintegrating machine; Raw refuse storage hole, shredding refuse storage hole, raw refuse driving grab bucket, shredding refuse driving grab bucket, raw refuse hopper and shredding refuse hopper are set in described airtight negative pressure garbage warehouse respectively; Wherein, discharging platform stores up to cheat by blanking pipe and raw refuse and is connected, and raw refuse hopper is connected with disintegrating machine by the plate of below machine of feeding, and disintegrating machine outlet is stored up to cheat with shredding refuse and is connected; The garbage outlet of shredding refuse feed hopper bottom is connected with the garbage inlet of refuse burning system; Raw refuse storage hole is connected with the percolate entrance of percolation liquid treating system with bottom, shredding refuse storage hole; Raw refuse driving grab bucket and shredding refuse driving grab bucket are located at the top of airtight negative pressure garbage warehouse inside, can move freely respectively between raw refuse storage hole and raw refuse hopper and between shredding refuse storage hole and shredding refuse hopper.
3. dry method cement rotary kiln associated treatment house refuse system according to claim 1 and 2, it is characterized in that, described refuse burning system comprises feed fire grate, incinerator, waste heat boiler, slag bath and bucket chain conveyor; Wherein, the entrance of feed fire grate, outlet are connected with the garbage outlet of described wastes pre-processing system, incinerator entrance respectively; Arrange slag bath below incinerator, the hot slag outlet bucket chain conveyor of slag bath is communicated with cement clinker burning system entrance; Described incinerator is connected with waste heat boiler by top flue, and the useless exhanst gas outlet of waste heat boiler is connected with the entrance of flue gas purification system by pipeline, and vapours outlet is connected with the generating feed(raw material)inlet of cement clinker burning system.
4. according to the arbitrary described dry method cement rotary kiln associated treatment house refuse system of claim 1-3, it is characterized in that, described flue gas purification system comprises SNCR denitrating system, half dry type depickling reaction tower, lime white preparation system, active carbon storage and spraying system, quick lime storage and spraying system, bagroom, fly ash carry machine and flying dust storehouse; Wherein, the smoke inlet of half dry type depickling reaction tower is connected with the useless exhanst gas outlet of refuse burning system waste heat boiler and the outlet of lime white preparation system respectively with material inlet, and the exhanst gas outlet of half dry type depickling reaction tower is connected with described bagroom entrance and flying dust storehouse entrance respectively with material outlet; The outlet of bagroom is connected with a chimney by a blower fan, and the flying dust collected in bagroom is connected with flying dust storehouse entrance by the fly ash carry machine arranged below it; The outlet of SNCR denitrating system by Pipe installing in described incinerator uptake flue; Active carbon storage and spraying system and quick lime is stored in a warehouse and spraying system is successively set on the pipeline between half dry type depickling reaction tower and bagroom; The outlet in flying dust storehouse is connected with the garbage inlet of described refuse burning system.
5., according to the arbitrary described dry method cement rotary kiln associated treatment house refuse system of claim 1-4, it is characterized in that, described percolation liquid treating system comprises diafiltration liquid pool and leachate purification system; Wherein, the entrance and exit of diafiltration liquid pool exports with the percolate of wastes pre-processing system respectively, leachate purification system entry is connected; The solid discharge of leachate purification system is connected with the grog feed(raw material)inlet of cement clinker burning system and the slag bath of refuse burning system respectively with middle water out.
6. according to the arbitrary described dry method cement rotary kiln associated treatment house refuse system of claim 1-5, it is characterized in that, described cement clinker burning system comprises dore furnace, rotary kiln, kiln hood grate-cooler, kiln hood electric cleaner, kiln hood electricity generation boiler, Steam Turbine and blower fan; Wherein, decomposition furnace outlet is connected with rotary kiln entrance, rotary kiln outlet is connected with kiln hood grate-cooler entrance, and the outlet of kiln hood grate-cooler first thermal source outlet, Secondary Heat Source is connected with kiln hood electricity generation boiler entrance, kiln hood electric cleaner entrance, refuse burning system thermal source inlet respectively with waste gas outlet; Kiln hood electricity generation boiler is connected with Steam Turbine entrance by pipeline; The outlet of kiln hood electric cleaner is connected with a chimney by blower fan.
7. a method for dry method cement rotary kiln associated treatment house refuse, is characterized in that, use the arbitrary described dry method cement rotary kiln associated treatment house refuse system of claim 1-6, concrete steps are:
(1), described house refuse is processed into foul smell, solid refuse and percolate through wastes pre-processing system;
(2), the described foul smell that obtains of step (1) enters cement clinker burning system and burns and decompose, and produces waste gas;
(3) the described solid refuse that, step (1) obtains burns into hot slag through refuse burning system, the useless flue gas of generation simultaneously and vapours after heat exchange; Vapours enters cement clinker burning system and participates in generating;
(4) the described percolate that step (1) obtains filters through percolation liquid treating system and obtains middle water and residue, and described residue enters cement clinker burning system and carries out burning decomposition;
(5) the hot slag that, step (3) obtains enters automatic Mixed Materials System of Cement as raw material and prepares cement after the described middle water cooling that step (4) obtains;
(6) the useless flue gas that, step (3) obtains enters air after flue gas purification system process; The flying dust that flue gas purification system process is left returns to refuse burning system and again burns;
(7) waste gas that, step (2) obtains returns to the thermal source of refuse burning system as refuse burning system.
8. method according to claim 7, it is characterized in that, step (1) described house refuse through the detailed process of wastes pre-processing system process is: described house refuse is first weighed, then discharging stores fermentation (7-10 days) to raw refuse storage hole, finally broken.
9. method according to claim 7 or 8, it is characterized in that, the detailed process that described in step (3), solid refuse burns through refuse burning system is: solid refuse produces hot slag and heat and to give up flue gas after burning, and the clinker that the slag that hot slag obtains after cooling, cement clinker burning system obtain all is admitted to automatic Mixed Materials System of Cement and utilizes as the raw material preparing cement; The useless flue gas of heat obtains vapours and useless flue gas after heat exchange, and vapours input cement clinker burning system participates in generating, and useless flue gas is through flue gas purification system process.
10. according to the arbitrary described method of claim 7-9, it is characterized in that, in step (6), useless flue gas through the detailed process of flue gas purification system process is: useless flue gas enters in air after carrying out purifying and dedusting; The flying dust produced in described purifying and dedusting process again feeds refuse burning system circulation and burns.
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| CN105032884A (en) * | 2015-04-03 | 2015-11-11 | 坚构（北京）建筑技术有限公司 | System and method of synergistic treatment of household garbage and energy resource comprehensive utilization with rotary cement kiln |
| CN106122982A (en) * | 2016-04-20 | 2016-11-16 | 浙江环立环保科技有限公司 | A kind of cement kiln synergic processing hazardous waste exhaust treatment system |
| CN107262491A (en) * | 2016-04-07 | 2017-10-20 | 深圳华云环保科技发展有限公司 | A kind of life refuse processing method and device |
| CN107716505A (en) * | 2017-11-15 | 2018-02-23 | 安徽海螺建材设计研究院 | A kind of cement kiln synergic processing house refuse system rubbish storage house exhaust processing unit and its processing method |
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| CN111777345A (en) * | 2020-07-17 | 2020-10-16 | 长沙紫宸科技开发有限公司 | Method for co-processing waste incineration fly ash by using cement kiln |
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| CN110201980B (en) * | 2019-06-06 | 2020-11-10 | 北京云水浩瑞环境科技有限公司 | System and method for treating household garbage |
| CN111704931A (en) * | 2020-05-28 | 2020-09-25 | 西安交通大学 | Combustible solid waste segmented oxygen-enriched gasification cooperative treatment system |
| CN111704931B (en) * | 2020-05-28 | 2021-08-13 | 西安交通大学 | Combustible solid waste segmented oxygen-enriched gasification cooperative treatment system |
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