CN203558956U - Municipal sludge recycling treatment plant - Google Patents
Municipal sludge recycling treatment plant Download PDFInfo
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- CN203558956U CN203558956U CN201320713063.2U CN201320713063U CN203558956U CN 203558956 U CN203558956 U CN 203558956U CN 201320713063 U CN201320713063 U CN 201320713063U CN 203558956 U CN203558956 U CN 203558956U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model provides a municipal sludge recycling treatment plant. The municipal sludge recycling treatment plant comprises tunnel kiln brick sintering equipment, namely a forming workshop comprising a stirrer, a brick molding machine and a setting machine, and a tunnel kiln comprising a drying section, a preheating section, a high-temperature roasting section and a cooling section, wherein a waste heat boiler is mounted on the cooling section of the tunnel kiln and connected with a waste heat utilization system. The municipal sludge recycling treatment plant is characterized by further comprising a municipal sludge anaerobic nitrifying system, wherein the municipal sludge anaerobic nitrifying system comprises a sludge raw material pool, an anaerobic nitrifying pool and a biogas residue pool, all of which are orderly connected together, the anaerobic nitrifying pool is connected with the waste heat boiler of the tunnel kiln brick sintering equipment through a biogas fan, and the biogas residue pool is connected with the stirrer of the tunnel kiln brick sintering equipment through a slurry pump. The municipal sludge recycling treatment plant realizes innocent, reducing and recycling disposal of municipal sludge.
Description
Technical field
The utility model belongs to field of Environment Protection, relates in particular to a kind of municipal sludge treatment system.
Background technology
Along with the fast development of China's economic society and the quickening of Development of China's Urbanization, urban population constantly increases, and sanitary sewage is also in continuous increase, and municipal drainage Infrastructure is more and more perfect, and sewage access network rate improves constantly.By the end of the year 2010, more than 2800 of the built sewage works of China, town sewage treatment capacity has reached more than 300 hundred million tons/year, processes waste water and the sludge quantity (by water ratio 80%) that produces reaches 3,000 ten thousand tons/year of left and right, and annual also in the speed increment with approximately 10%.The contradiction that the sludge quantity producing in municipal wastewater treating processes continues to rise with processing between scarce capacity highlights day by day, and municipal sludge is disposed with management work and faced a severe challenge.There is " the light mud of heavy water " phenomenon, the input wretched insufficiency of supporting sludge disposal process portion in sewage treatment process in the planning of each municipal sewage plant and design particularly.Although sludge creation amount only accounts for 0.3% of the amount of disposing of sewage～O.5% (volume fraction), in whole capital costs of Yi Zuo sewage work of Dan developed country, for the treatment of the expense of mud, just approach 5O%; And in whole capital costs of the most of sewage work of China, for the treatment of the expense of mud less than 5%, because during the technological design of domestic sewage work, mud generally only adopts the quick-reading flow sheets of " concentrated → mechanical dehydration → discharge ", does not consider the harmlessness disposing of mud.Sewage work during through mechanical dehydration, has often added again the flocculation agents such as polyacrylamide (PAM) the mud after concentrated, and the moisture percentage in sewage sludge of discharge, up to 80% left and right, is difficult to directly utilization.Owing to containing a large amount of hazardous and noxious substances in mud, as parasitic ovum, pathogenic micro-organism, bacterium, synthesis of organic substance and heavy metal ion, should not be as the fertilizer of grain, fruits and vegetables, if deal with improperly, will cause secondary pollution to environment, therefore environmental administration classifies municipal sludge as Hazardous wastes together with domestic refuse, need to have a kind of energy to solve the municipal sludge treatment process in large, medium and small city.
The general method of both at home and abroad municipal sludge being disposed at present has landfill method, composting process, anaerobic nitrification method and pyrolysis method etc.Although landfill method is the maximum method of domestic current use, owing to finally not eliminating environmental pollution, just delay a little time, so do not re-used landfill method in some developed countries of Europe.Landfill need to solve the anti-safe disposal that blends the methane gas of sludge fermentation generation of mud percolate, and environmental requirement and technical requirements are very high; Current research shows, domestic employing sanitary landfill mode is carried out the project of sludge disposal, all cannot reach standard-required, carry out landfill according to standard, and cost is very expensive, and must take a large amount of land resources.Compost is time-consuming, take up an area, give an offensive smell, and easily causes secondary pollution.And pyrolysis method reaction conditions is complicated, and restricted by mud nature, the bad adaptability of device, technological process is difficult control extremely, so now still in the pilot study stage.
Anaerobic nitrification method can be converted into bioenergy the organism in mud, also can meet more and more stricter environmental requirement.The nitrated first stage, macromolecule organic is due to the effect of amphimicrobian flora, resolve into low molecule intermediate product, the meta-bolites that these degradation productions and flora generate, effect in subordinate phase by obligatory anaerobic bacteria and mineralising, be broken down into water miscible inorganics and gas, through the nitrated volume-diminished that can make mud, produce methane gas, eliminate stench, improve the dewatering of mud, and almost can make all pathogenic bacterias, roundworm egg is all killed, the oxidized decomposition of poisonous and hazardous organic residue.Some developed countries such as current Germany, Britain, Finland, Japan carry out the utilization of resources to mud, main employing produces the methods such as biogas generates electricity by sludge fermentation, solve to a certain extent sludge part recycling problem, but could not solve the safe utilization problem of natural pond slag.Domestic Ye You enterprise for brickmaking, has brought good economic benefit to enterprise by dried mud.Southern area part brick and tile manufacturing enterprise builds about 5000m
2the simple and easy factory building natural air drying of left and right open type mud, and supporting mud is artificial or the mode of mechanical airing, turning, impels mud to reduce water ratio, enters next step brickmaking operation so that the raw materials such as mud and shale mix rear pulverizing.This method drying efficiency is very low, and dried moisture percentage in sewage sludge is more than 40%, easily produces foul smell, dust etc. in airing, turning process, pollutes surrounding enviroment, and floor space is larger, is difficult to promote.
Utility model content
The utility model provides a kind for the treatment of unit of municipal sludge disposal of resources, object is that municipal sludge is carried out to low investment, low cost, safe and efficient disposal, liquid residue after municipal sludge anaerobic nitrification is as brick-making raw material, utilize electric power that biogas and residual heat of tunnel kiln send can guarantee the need for electricity of environmental protection facility, innoxious, the minimizing that realizes that municipal sludge disposes and resource utilization.
The utility model technical scheme adopting of dealing with problems is:
The utility model provides a kind for the treatment of unit of municipal sludge disposal of resources, comprise tunnel kiln brick sintering equipment, comprise stirrer, brick press, the fitting room factory building of setting machine, and comprise dryer section, preheating section, high temperature calcination section, the tunnel furnace of temperature descending section, the temperature descending section of tunnel furnace is provided with waste heat boiler, waste heat boiler is connected with bootstrap system, it is characterized in that: also include municipal sludge anaerobic nitrification system, described municipal sludge anaerobic nitrification system comprises the mud feed reservoir connecting successively, anaerobic nitrification pond and natural pond slag bath, anaerobic nitrification pond is connected with the waste heat boiler of tunnel kiln brick sintering equipment by biogas blower fan, natural pond slag bath is connected with the stirrer of tunnel kiln brick sintering equipment by slag stock pump.
Further, the kiln of the temperature descending section of tunnel furnace top is provided with the waste heat boiler consisting of economizer, evaporation and heat-exchange device, superheater, between superheater exit end and economizer entrance end, is connected with bootstrap system.
Described bootstrap system comprises the generating sets such as the turbo-generator that is connected in turn, steam turbine condenser, boiler water treatment device, deoxygenator, turbo-generator steam inlet is connected with the exit end of superheater, turbo-generator output terminal connects trip switch cabinet, and the exit end of deoxygenator is connected with the entrance end of economizer.
Further, in the anaerobic nitrification pond of municipal sludge anaerobic nitrification system, be provided with hot water heat exchanger, hot water heat exchanger is connected with the steam turbine condenser of bootstrap system, hot water heat exchanger is also connected with a circulating water cooling tower.
Further, fitting room factory building is connected with the temperature descending section of tunnel furnace by blower fan, pipeline.
Also there is smoke processing system, smoke processing system comprises sack cleaner, the deacidifying device being connected in turn, the entrance end of the sack cleaner smoke outlet set with tunnel furnace preheating section is communicated with, the entrance end of the sack cleaner humidity discharging mouth set with the dryer section of tunnel furnace is communicated with, and the exit end of sack cleaner is communicated with the entrance end of deacidifying device; The exit end of deacidifying device is connected with chimney.
The using method of said apparatus, comprise the tunnel kiln brick sintering technological process of production, be about to brickmaking powder after the operations such as stirring, base, code base, adobe is sent into tunnel furnace, in tunnel furnace, after the operation such as drying, preheating, high-temperature roasting, cooling, be cooled to normal temperature, kiln discharge obtains vitrified brick, the waste heat that adobe discharges in cooling process is converted to electric energy by bootstrap system after being absorbed by waste heat boiler again, it is characterized in that: also comprise following technique:
(1) municipal sludge is carried out to anaerobic nitrification art breading;
(2) the biogas input tunnel furnace that municipal sludge obtains after by anaerobic nitrification art breading, again by bootstrap system is converted to electric energy after the heat producing is absorbed by waste heat boiler in tunnel furnace after burning;
(3) waste residue that municipal sludge obtains after by anaerobic nitrification art breading adds the agitating procedure of brickmaking powder, stirs together with brickmaking powder.
Further, the utility model, by the foul smell input tunnel furnace producing in stirring, base, code blank process, again by bootstrap system is converted to electric energy after the heat producing is absorbed by waste heat boiler in tunnel furnace after burning.
Further, the utility model is discharged the recirculated water of 35～40 ℃ from bootstrap system, and recirculated water enters the hot water heat exchanger of the inside, anaerobic nitrification pond that anaerobic nitrification technique used, with the temperature that maintains the municipal sludge in anaerobic nitrification pond at 30～35 ℃.
The flue gas that the utility model produces tunnel furnace after dedusting, depickling are processed, through smoke stack emission in atmosphere.
It is to take the mature technologies such as widely used tunnel kiln brick sintering production technology and municipal sludge anaerobic nitrification technology, tunnel furnace radiation heat transfer formula cogeneration technology as basis that the utility model utilizes the method for tunnel kiln brick sintering production line cooperative disposal municipal sludge, and liquid residue disposal, biogas and the residual heat of tunnel kiln after nitrated by mud is used to realize that municipal sludge disposes is innoxious, minimizing, resource utilization.
Technique concrete steps of the present utility model comprise:
(1) municipal sludge anaerobic nitrification: the mud (water ratio 80% left and right) of sewage work after preliminary filter-press dehydration is transported to anaerobic nitrification pond with automobile, mud after Ye Keba sewage work is concentrated is directly delivered in anaerobic nitrification pond and is stored fermentation by slush pump, and the organic matter in mud is decomposed and produced biogas by microorganism.
(2) in anaerobic nitrification pond, be furnished with the stainless steel pipes of hundreds of ￠ 60, at temperature during lower than 30 ℃, take steam turbine cycle water (approximately 35～40 ℃) as medium is to the heat supply of anaerobic nitrification pond, maintain temperature all-the-time stable in anaerobic nitrification pond within the scope of 30～35 ℃, for accelerate sludge is nitrated and voluminous biogas provides temperature condition.
(3) tunnel kiln brick sintering technique: the baked brick raw materials such as shale, coal gangue are broken to (powder) by a certain percentage together broken, be then sent to ageing pond ripening by belt conveyor; Powder through ripening is transported to stirrer by multi-bucket excavator and travelling belt, and adds a certain amount of water, and the paste mixture after stir process is extruded and made strip " wet base bar " by vacuum forming brick press like this; Then by automatic hack cutter, according to the product specification of the market requirement, cut into individual wet adobe, then to kiln car, deliver to drying process by automatic setting machine code; The code well kiln car of wet adobe is sent dry kiln to by tractor and is dried, and removes most of free state moisture in adobe; Kiln car after brick bat drying enters tunnel furnace preheating section to start to heat up, and further removes crystal water; Adobe enters high temperature calcination section, and after being warming up to point of ignition, the combustiblesubstances such as a small amount of carbon granules in adobe take fire in the warm air environment that high temperature and kiln tail blower fan are sent here, and drive whole high-temperature calcination process; Adobe enters temperature descending section, and adobe issues after raw physical-chemical reaction produces brilliant change and starts cooling in hot environment, and discharges a large amount of waste heats; After completing again crystallisation process, continue to be cooled to normal temperature kiln discharge; The adobe of kiln discharge is transported to construction site or stock ground by artificial or mechanical system, completes the whole production process of vitrified brick.
(4) processing of the nitrated rear liquid residue of sludge anaerobic and biogas: the liquid residue after anaerobic nitrification pond is nitrated is delivered to by slag stock pump in the stirrer of vitrified brick production line fitting room, stirs with together with powder after ripening, as brick-making raw material; The biogas that municipal sludge produces in anaerobic nitrification pond is as the part of heat energy of tunnel kiln waste heat boiler.
(5) processing of foul smell: the air between stirring in sintering brick process, moulding, code base technique car is sent into burn processing in tunnel furnace by blower fan, prevent odor pollution environment.
(6) UTILIZATION OF VESIDUAL HEAT IN: waste heat boiler absorbs the heat of biogas combustion release and the waste heat of tunnel furnace, is converted into electric energy by bootstrap system.
(7) processing of tunnel kiln smoke-gas: the waste gas process fly-ash separator dedusting producing when the flue gas that in tunnel furnace, adobe burning produces and brick bat drying, more further process by smoke stack emission in atmosphere through deacidifying device.
Device of the present utility model is:
Sludge treating system comprises municipal sludge anaerobic nitrification system, tunnel kiln brick sintering production system, afterheat utilization system of tunnel furnace and smoke processing system.Described municipal sludge anaerobic nitrification system comprises mud feed reservoir, anaerobic nitrification pond, natural pond slag bath and the biogas collection pipeline of sealing.Mud feed reservoir is connected by pipeline with anaerobic nitrification pond; In anaerobic nitrification pond, be furnished with hundreds of stainless steel pipes, conduit entrance is connected with steam turbine cycle water pump, and outlet is connected with circulating water cooling tower; Anaerobic nitrification pond is connected by pipeline with natural pond slag bath bottom.Natural pond slag bath is connected by slag stock pump and pipeline with the stirrer in vitrified brick fitting room, the biogas that assemble at top, anaerobic nitrification pond is connected with tunnel kiln waste heat boiler by biogas blower fan and pipeline, and fitting room factory building is communicated with tunnel furnace temperature descending section by blower fan and pipeline; Smoke processing system is connected with the smoke outlet of tunnel furnace preheating section and the humidity discharging mouth of dryer section respectively.
The kiln top of tunnel furnace is provided with the waste heat boiler consisting of economizer, evaporation and heat-exchange device, superheater, wherein to be located at the second half section of tunnel furnace temperature descending section be cooling section top to economizer, and the first half section that evaporation and heat-exchange device, superheater are positioned at tunnel furnace temperature descending section is insulation belt section
Described bootstrap system comprises the turbo-generator that is connected in turn, water circulating pump, cooling tower, boiler water treatment device, deoxygenator, service pump etc.Turbo-generator steam inlet is connected with the exit end of superheater, and turbo-generator output terminal connects trip switch cabinet.The exit end of deoxygenator is connected with boiler feedpump entrance end, and service pump exit end is connected with the economizer entrance end of waste heat boiler.
Described tunnel kiln brick sintering production system comprises equipment and the facilities such as former material shed, broken (powder) broken machine, ageing pond, multi-bucket excavator, stirrer, vacuum forming brick machine, automatic hack cutter, setting machine, kiln car, tractor, dry kiln, ferry bus and tunnel furnace.Former material shed, broken (powder) broken machine, ageing pond, multi-bucket excavator, stirrer, vacuum forming brick machine, automatic hack cutter, setting machine, kiln car successively order connect by rotary conveyor.Dry kiln and tunnel furnace inside below is provided with track, between setting machine and dry kiln import, between dry kiln outlet and tunnel furnace import and tunnel furnace export with setting machine between by track, be connected, kiln car is put in orbit.Setting machine is put into the adobe after moulding on kiln car, filling the kiln car of adobe is delivered on the track in dry kiln by tractor, on track in ferry bus is delivered to tunnel furnace, the finished bricks from tunnel furnace kiln car out is discharged to construction site or stock ground by artificial or mechanical system again; The kiln car of laying down finished bricks is delivered to by tractor by setting machine, prepares again to fill adobe, and kiln car is iterative cycles like this in orbit.
Described smoke processing system comprises sack cleaner, the deacidifying device being connected in turn; The entrance end of sack cleaner is communicated with the smoke outlet of tunnel furnace preheating zone and the humidity discharging mouth of dry kiln respectively, and exit end is communicated with the entrance end of deacidifying device; The exit end of deacidifying device is communicated with venting port (chimney).
The beneficial effects of the utility model:
The liquid residue that the utility model can produce municipal sludge after anaerobic nitrification is as one of raw material of vitrified brick, by tunnel kiln brick sintering production technology and tunnel furnace radiation heat transfer formula UTILIZATION OF VESIDUAL HEAT IN technology, make the mud of sewage work's discharge become resource by Hazardous wastes, thoroughly eliminate the stink in sludge disposal process, and the heavy metals immobilization in liquid residue in building material product, prevent water surrounding and air environmental pollution that municipal sludge causes; Meanwhile, utilize tunnel kiln waste heat boiler, reclaim bioenergy and baked brick tunnel kiln waste heat that municipal sludge anaerobic nitrification produces biogas, finally realize " resource utilization " that municipal sludge is disposed.
The utility model is followed municipal sludge and is disposed " innoxious, minimizing, resource utilization " principle, utilize feature, the widespread advantage of hot environment and brick and tile enterprise of tunnel kiln brick sintering production technique, one of raw material using the liquid residue after municipal sludge anaerobic nitrification as brickmaking, make in municipal sludge a small amount of heavy metals immobilization in building materials, other nuisance, by pyroprocessing, prevents municipal sludge polluted water, compression ring border.Municipal sludge is after anaerobic nitrification, and organism is wherein converted into bioenergy--and biogas, prevents the production environment in odor pollution brickmaking workshop.Simultaneously, by residual heat of tunnel kiln, utilize technology that the thermal energy collecting of residual heat of tunnel kiln and biogas combustion release is got up to be converted into electric power, the mud producing for the large, medium and small Municipal Sewage Plant of safe and efficient disposal provides a kind of novel method little, cost of disposal is low of investing, Bing Wei vitrified brick enterprise provides electric power energy, can reduce more than 80% power cost of vitrified brick enterprise.In addition, the optimum temps of producing biogas by anaerobic nitrification mode is 30～35 ℃, discarded recirculated water low temperature heat energy in cogeneration process, and for temperature, the sludge anaerobic during lower than 30 ℃ is nitrated again provides most suitable temperature condition, be conducive to organic efficient and decompose, can increase the output of biogas.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
The tunnel kiln brick sintering technological process of production: the brick-making raw materials such as coal gangue, shale are pulverized by the equipment such as broken (powder) broken machine of raw material preparation system 27 by a certain percentage, and pulverulent mixture is delivered to ageing storehouse 28 by endless belt conveyor and carried out ripening; Powder through ripening is transported to stirrer 7 by multi-bucket excavator and travelling belt, simultaneously by the liquid residue place of water after anaerobic nitrification, natural pond slag in natural pond slag bath 5 is sent into stirrer 7 by slag stock pump 6 and stir together with powder, the paste mixture after stir process is partly extruded and is made strip " wet base bar " by the vacuum forming brick machine in brick press 29 like this; Then by automatic hack cutter part, according to the product specification of the market requirement, cut into individual wet adobe 34, then dry to delivering on kiln car 32 in the dryer section 21 of tunnel furnace 20 by 30 yards of artificial or automatic setting machines, remove most free state moisture in adobe 34; Above-mentioned stirrer 7, brick press 29, setting machine 30 are all arranged in fitting room factory building 31.The dry preheating section 33 of sending into tunnel furnace 20 by kiln car 32 of adobe 34 starts to heat up, and further removes crystal water; Then adobe 34 is sent into high temperature calcination section 35 by kiln car 32, and after being warming up to point of ignition, the combustiblesubstances such as a small amount of carbon granules in adobe 34 take fire and drive whole roasting process in the warm air environment that high temperature and kiln tail gas blower 15 are sent here; 950～1100 ℃ hot environments of adobe 34 in high temperature calcination section 35 issue raw physical-chemical reaction and produce after new clinker mineral, by kiln car 32, entered the temperature descending section 38 being formed by first half section holding-zone 36 and second half section cooling section 37, and discharge a large amount of waste heats, in temperature descending section 38, the interior new clinker mineral of adobe 34 continues to be cooled to normal temperature kiln discharge at 600～450 ℃ after completing crystal conversion process, and this process will discharge a large amount of waste heats again; The adobe 34 of kiln discharge is finished bricks, by artificial or mechanical system, transports to construction site or stock ground, completes the whole production process of brick.Kiln tail gas blower 15 from tunnel furnace temperature descending section 38 ends (be finished bricks outlet) to kiln in air blast, with cooling adobe 34, the burning for the adobe 34 in high temperature calcination section 35 simultaneously provides oxygen; Flue gas flows toward preheating section 33, and 33 head ends from preheating zone (being kiln car import) and dryer section 21 enter atmosphere.
The utility model utilizes liquid residue that municipal sludge anaerobic nitrification produces as one of brick-making raw material, makes heavy metals immobilization in municipal sludge in building material product; Temperature descending section 38 at tunnel furnace 20 is installed waste heat boiler, and the heat energy that in collection tunnel furnace 20, waste heat and biogas combustion discharge generates electricity, and realizes the recycling of refuse.The online monitoring data of the thermal parameters such as the water level in the techniques such as the nitrated and residual heat of tunnel kiln utilization of sludge anaerobic, tunnel furnace burning, temperature, pressure, flow, rotating speed and discharge flue gas is pooled on the controlling board in watch-keeping cubicle and shows, reports to the police and automatically regulate, realize automatization and the effective monitoring of production process, avoid occurring security incident and environmental accident.
Operating process is as described below:
As shown in Figure 1 utilize the technical process of tunnel kiln brick sintering production line cooperative disposal municipal sludge.Sewage work transports to scene municipal sludge, pours in the mud feed reservoir 1 of sealing, and the mud of mud feed reservoir 1 bottom enters in anaerobic nitrification pond 3 by pipeline under action of gravity; Natural pond slag after anaerobic nitrification also enters natural pond slag bath 5 by pipeline; The natural pond slag of natural pond slag bath 5 bottoms is sent to the stirrer 7 of tunnel kiln brick sintering production line by slag stock pump 6, mix together with the process powder of ripening in stirrer 7; By the vacuum forming brick machine in brick press 29, partly extrude and make strip " wet base bar " again; Then by automatic hack cutter part, according to the product specification of the market requirement, cut into individual wet adobe 34, adobe 34 is equal to setting machine code base by the artificial code of setting machine 30(base) yard to kiln car 32, deliver in the dryer section 21 of dry tunnel furnace 20 and dry wet adobe 34 is dried, remove that adobe 34 after free state moisture continues to enter the interior intensification of tunnel furnace 20, catches fire, burning, cooling, the finished bricks after kiln discharge is transported to construction site or stock ground by artificial or mechanical system.
The biogas that assemble at 3 tops, anaerobic nitrification pond enters the interior burning of tunnel kiln waste heat boiler 39 by biogas blower fan 4 and drying installation 9.A small amount of foul smell in fitting room factory building 31 is delivered to the temperature descending section 38 of tunnel furnace 20 by induced draft fan 8, as combustion air.The flue gas producing during tunnel furnace 20 vitrified brick enters into sack cleaner 24 dedustings from the smoke outlet of tunnel furnace preheating section 33 by tunnel furnace induced draft fan 23, from dryer section 21 venting ports waste gas out, by dry kiln induced draft fan 22, also enter into sack cleaner 24 dedustings, the waste gas after dedusting is further processed and is discharged in atmosphere by chimney 26 through deacidifying device 25 again.
The second half section that the economizer 16 of waste heat boiler 39 is arranged on the temperature descending section 38 of tunnel furnace 20 is also the top, kiln top of cooling section 37, and the first half section that the evaporation and heat-exchange device 17 of waste heat boiler 39 and superheater 18 are arranged on the temperature descending section 38 of tunnel furnace 20 is also the top, kiln top of holding-zone 36.
As of the present utility model perfect, between superheater 18 exit end and economizer 16 entrance ends, be connected with turbo-generator 11, cooling tower 10, boiler water treatment device 13, deoxygenator 14 in turn.The heat that waste heat in waste heat boiler 39 absorption tunnel furnace 20 and biogas combustion discharge, produces superheated vapour for turbo-generator 11 generatings.Boiler water treatment device 13 is that waste heat boiler 39 supplements de-mineralized water, and boiler water treatment device 13 is the deoxygenator 14 that reinjects after the calcium in tap water, magnesium ion removal, to prevent economizer 16, evaporation and heat-exchange device 17 and the pipeline scale of waste heat boiler 39.The electric power that trip switch cabinet 12 is responsible for turbo-generator 11 to send, by the mode of being incorporated into the power networks, to consumer 40 power supplies of vitrified brick production line and environment-friendly processing unit, guarantees the Electrical Safety of these consumers 40, excrescent electric power online.The flow indication of the online monitoring data detection of the thermal parameters such as all pressure of hot working supervisory system system 19 charge tunnel kilns 20, turbo-generator 11, cooling tower 10, boiler water treatment device 13, deoxygenator 14, waste heat boiler 39, temperature, flow, water level, rotating speed, vibration and discharge flue gas and water, gas (vapour) valve, adjusting and control.
As of the present utility model further perfect, in anaerobic nitrification pond 3, also arranged hot water heat exchanger 2, from condenser 41(steam turbine condenser 41 and the condensation pump 42 of turbo-generator 11, be connected between turbo-generator 11 and deoxygenator 14) 35～40 ℃ of recirculated waters of discharging enter hot water heat exchanger 2(recirculated water and by the water circulating pump 43 between condenser 41 and cooling tower 10, are driven and circulate), sludge anaerobic for temperature during lower than 30 ℃ is nitrated provides suitable temperature condition, maintain the temperature of the municipal sludge in anaerobic nitrification pond 3 at 30～35 ℃, being conducive to organic efficient decomposes, increase the output of biogas.
In the present embodiment, take and produce 8000 ten thousand (signature) tunnel kiln brick sintering production lines (two burn till 3.6 meters of width, 140 meters in length) per year upper to build the facility of a day processing 80 tons of municipal sludges be example: certain municipal sewage plant's day is processed 50,000 tons of waste water, and the mud in sludge thickener is by water ratio 80% left and right after mechanical dehydration; Apart from sewage work's 12 kms, have one to produce 8000 ten thousand (signature) tunnel kiln brick sintering plants per year, 1 200m has been built in this repair in shop
38.5 meters of diameters, high 4.5 meters), four 800m mud feed reservoir 1(overall dimensions:
313.5 meters of diameters, high 6.5 meters) and 1 200m anaerobic nitrification pond 3(overall dimensions:
3natural pond slag bath 5(overall dimensions: 8.5 meters of diameters, high 4.5 meters), the base absolute altitude of mud feed reservoir 1 is higher 5 meters than the base absolute altitude in four anaerobic nitrification ponds 3, the base of natural pond slag bath 4 is identical with the base absolute altitude in four anaerobic nitrification ponds 3, and above-mentioned six ponds are all sealings except essential reserved hole.Each anaerobic nitrification pond 3 is interior has installed one group of hot water heat exchanger 2, and it is 273mm that every group of hot water heat exchanger 2 imported and exported pipeline diameters, imports and exports between pipeline and has welded 150 stainless steel pipes that diameter is 60mm.
Sewage disposal station-service closed dump truck is transported to brick sintering plant municipal sludge and is poured in mud feed reservoir 1, the mud of mud feed reservoir 1 bottom under action of gravity by pipeline flow into anaerobic nitrification pond 3 interior above, anaerobic nitrification pond 3 is with natural pond slag bath 5 bottoms by pipeline communication, and the natural pond slag of bottom can flow into natural pond slag bath 5 certainly.In anaerobic nitrification pond 3, the interior nitrated time needs 3O days to mud, and enter natural pond slag bath 5 from 3 bottoms, anaerobic nitrification pond natural pond slag every day successively, and every day, the anaerobic nitrification pond 3 also from mud feed reservoir 1 toward deslagging supplemented equivalent mud.1 15T/h slag stock pump 6 is taken out natural pond slag in stirrer 7 from natural pond slag bath 5, substitute mixing water, in stirrer 7, mix together with the process powder of ripening, by brick press 29(vacuum forming brick machine, automatic hack cutter), setting machine 30, the kiln car 32 of the full adobe 34 of code is sent to 21 pairs of wet adobes 34 of dryer section to be dried, then again in the interior intensification of tunnel furnace 20, catch fire, under 950 ℃ of conditions, burn 3 hours, cooling rear kiln discharge slowly, finished bricks is transported to construction site mechanically.
3 tops, anaerobic nitrification pond are provided with a DN150 biogas pipeline, and the biogas pipeline at 3 tops, four anaerobic nitrification ponds converges to after a DN250 pipeline, by a 2000m
3/ h biogas blower fan 4 and drying installation 9(overall dimensions: 1.5 meters of diameters, high 3 meters) enter temperature descending section 39 burnings of tunnel furnace 20 as the part of heat energy of waste heat boiler 39.Fitting room factory building 31(overall dimensions: long 50 meters, wide 40 meters, high 12 meters) top is provided with a 25000m
3/ h induced draft fan 8, the second half section that air can be delivered to the temperature descending section 39 of tunnel furnace 20 is also that the kiln of cooling section 37 is inner, as combustion air.
The flue gas producing during tunnel furnace 20 vitrified brick enters into sack cleaner 24(from the smoke outlet of tunnel furnace preheating section 33 by 55KW tunnel furnace induced draft fan 23 and processes with 10mm Plate Steel, long 5 meters of overall dimensions, wide 4 meters, high 6 meters) dedusting, from dryer section 21 venting ports waste gas out, by 30KW dry kiln induced draft fan 22, also enter into sack cleaner 24 dedustings, waste gas after dedusting processes with 10mm Plate Steel through deacidifying device 25(again, long 5 meters of overall dimensions, wide 4 meters, high 8 meters) further process, finally by diameter, be 2m, the chimney 26 of high 45m is discharged in atmosphere.
The waste heat boiler 39 of 2 3T/h is arranged on respectively on two 3.6m tunnel furnace 20, the temperature descending section 38(that the economizer 16 of waste heat boiler 39, evaporation and heat-exchange device 17 and superheater 18 are arranged in tunnel furnace 20 is comprised of first half section holding-zone 36 and second half section cooling section 37) on the kiln top of top, absorb the waste heat of tunnel furnace and the heat that biogas combustion discharges, produce 2.45MPa, the superheated vapour of 400 ℃ for 11 generatings of 1 1MW turbo-generator; 6T/h boiler water treatment device 13 is that waste heat boiler 39 supplements de-mineralized water, the electric power that trip switch cabinet 12 is responsible for turbo-generator 11 to send is by the mode of being incorporated into the power networks, to consumer 40 power supplies of vitrified brick production line and environmental protecting device, guarantee the Electrical Safety of these equipment, excrescent electric power online.35～40 ℃ of recirculated waters of discharging from steam turbine condenser 41 enter the hot water heat exchanger 2 of 3 inside, anaerobic nitrification pond, and suitable temperature condition is provided for sludge anaerobic is nitrated.Flow-rate adjustment and the control of the online monitoring data detection of the thermal parameters such as hot working supervisory system system 19 charge tunnel kilns 20, bootstrap system equipment (cooling tower 10, turbo-generator 11, deoxygenator 14, economizer 16, evaporation and heat-exchange device 17, superheater 18) and all pressure of anaerobic nitrification system device (hot water heat exchanger 2, anaerobic nitrification pond 3, drying installation 9), temperature, flow, water level, rotating speed, vibration and discharge flue gas and water, gas (vapour) valve, realize automatization and the effective monitoring of production process.
In aforesaid method, the effect of each equipment and facility is as follows:
1, mud feed reservoir 1 is the interim place that stores one to two day mud, and all-sealed structure, prevents that foul smell is excessive.
2, anaerobic nitrification pond 3 and hot water heat exchanger 2 are that sewage sludge storage, microorganism are decomposed organic main place; It is heating agent that hot water heat exchanger 2 be take 35～40 ℃ of recirculated waters that turbo-generator 11 discharges, and sludge anaerobic for temperature during lower than 30 ℃ is nitrated provides suitable temperature condition, is conducive to organic efficient and decomposes, and increases the output of biogas.
3, biogas blower fan 4, drying installation 9 are responsible for using sending into the interior burning of tunnel furnace 20 as the part of heat energy of waste heat boiler 39 after the dehydration of the biogas of anaerobic nitrification pond 3 interior generations.
4, natural pond slag bath 5 is places of interim storing liquid residue (natural pond slag).Slag water ratio 80% left and right, natural pond, the mixing water before alternative green brick forming.
5, to be responsible for that the interior smelly air on a small quantity of fitting room factory building 31 is delivered to tunnel furnace 20 interior combustion-supporting for induced draft fan 8.
6, waste heat boiler 39 comprises the devices such as economizer 16, evaporation and heat-exchange device 17, superheater 18 and drum, water in deoxygenator 14 is sent into waste heat boiler 39 after service pump 44 pressurizations, waste heat boiler 39 absorbs the heat of residual heat of tunnel kiln and biogas combustion release, produces superheated vapour for turbo-generator 11 generatings; Steam turbine condenser 41 is responsible for, the cooling water that changes into of low temperature and low pressure steam of turbo-generator 11 discharges, maintaining the vacuum of turbo-generator 11 simultaneously; After the latent heat of vaporization that recirculated water discharges in the interior absorption low temperature and low pressure steam of condenser 41 changes into water process, temperature can raise, and the recirculated water after intensification is lowered the temperature by cooling tower 10, then recycle; Boiler water treatment device 13 is responsible for removing calcium, the magnesium ion in tap water, prevents economizer 16, evaporation and heat-exchange device 17 and the pipeline scale of waste heat boiler 39.
7, the electric power control of the responsible device for generating power by waste heat of trip switch cabinet 12 and fume treatment auxiliary and frequency adjustment, load distribution.
8, the online monitoring data that hot working supervisory system system 19 is responsible for the thermal parameters such as water level on waste heat boiler 39, turbo-generator 11, tunnel furnace 20, anaerobic nitrification system and corresponding smoke wind pipe, temperature, pressure, flow, rotating speed, vibration and discharge flue gas is pooled on the controlling board in watch-keeping cubicle and shows, reports to the police and automatically regulate, realize automatization and the effective monitoring of production process, avoid occurring safety and environmental accident;
9, tunnel furnace 20 be brick-making raw material pulverize, adobe 34 after moulding through super-dry, preheating, high temperature burn till, insulation, cooling equipment; Cooling finished bricks when the burning that gas blower 15 is tunnel furnace 20 provides oxygen; The flue gas that induced draft fan 22,23 produces brick bat drying, burning is pulled out tunnel furnace 20, maintains the negative pressure of tunnel furnace 20.
10, sack cleaner 24, deacidifying device 25 and chimney 26 be the humidity discharging mouth of flue gases that tunnel furnace 20 is discharged and the dry kiln waste gas of discharging by dedusting, depickling, realize the equipment that waste gas environment protection standard is discharged.
The working process of present method is: the mud in anaerobic nitrification pond 3 is processed through anaerobic nitrification mode, thoroughly decompose the organic matter in mud, and produce biogas as the part of heat energy of tunnel kiln waste heat boiler 39, the mixing water before alternative adobe 34 moulding of natural pond slag.It is interior combustion-supporting that the interior a small amount of smelly air of fitting room factory building 31 is delivered to tunnel furnace 20 by induced draft fan 8.The flue gas producing in, combustion processes dry in the interior adobe of tunnel furnace 20 34, through induced draft fan 22 and 23 send into sack cleaner 24, deacidifying device 25 is discharged in atmosphere by chimney 26 after processing.The heat that residual heat of tunnel kiln and biogas combustion discharge is converted into 2.45MPa, the steam thermal energy of 400 ℃ by waste heat boiler 39, again through turbo-generator 11 generatings, the electric power sending is assigned to bootstrap system and tunnel furnace cigarette wind devices, brickmaking production unit by trip switch cabinet 12, excrescent electric power online; The low temperature and low pressure steam that steam turbine 11 is discharged, through the cooling water that changes into of condenser 41, is delivered in deoxygenator 14 and is recycled through condensation pump 42; Water circulating pump 43 is delivered to low-temperature circulating water after condenser 41 heats up and is entered hot water heat exchanger 2, and sludge anaerobic for temperature during lower than 30 ℃ is nitrated provides suitable temperature condition, then to cooling tower 10 heat radiations, recycle.The online monitoring data of the thermal parameters such as the water level on the responsible waste heat boiler 39 of hot working supervisory system system 19, steam turbine 11, tunnel furnace 20, anaerobic nitrification system and corresponding smoke wind pipe, temperature, pressure, flow, rotating speed, vibration and discharge flue gas is pooled on the controlling board in watch-keeping cubicle and shows, reports to the police and adjusting automatically.
Claims (6)
1. the treatment unit of a municipal sludge disposal of resources, comprise tunnel kiln brick sintering equipment, comprise stirrer, brick press, the fitting room factory building of setting machine, and comprise dryer section, preheating section, high temperature calcination section, the tunnel furnace of temperature descending section, the temperature descending section of tunnel furnace is provided with waste heat boiler, waste heat boiler is connected with bootstrap system, it is characterized in that: also include municipal sludge anaerobic nitrification system, described municipal sludge anaerobic nitrification system comprises the mud feed reservoir connecting successively, anaerobic nitrification pond and natural pond slag bath, anaerobic nitrification pond is connected with the waste heat boiler of tunnel kiln brick sintering equipment by biogas blower fan, natural pond slag bath is connected with the stirrer of tunnel kiln brick sintering equipment by slag stock pump.
2. the treatment unit of a kind of municipal sludge disposal of resources as claimed in claim 1, it is characterized in that: the kiln top of the temperature descending section of tunnel furnace is provided with the waste heat boiler consisting of economizer, evaporation and heat-exchange device, superheater, between superheater exit end and economizer entrance end, is connected with bootstrap system.
3. device as claimed in claim 2, it is characterized in that: described bootstrap system comprises the generating sets such as the turbo-generator that is connected in turn, steam turbine condenser, boiler water treatment device, deoxygenator, turbo-generator steam inlet is connected with the exit end of superheater, turbo-generator output terminal connects trip switch cabinet, and the exit end of deoxygenator is connected with the entrance end of economizer.
4. device as claimed in claim 3, it is characterized in that: in the anaerobic nitrification pond of municipal sludge anaerobic nitrification system, be provided with hot water heat exchanger, hot water heat exchanger is connected with the steam turbine condenser of bootstrap system, hot water heat exchanger is also connected with a circulating water cooling tower.
5. device as claimed in claim 1, is characterized in that: fitting room factory building is connected with the temperature descending section of tunnel furnace by blower fan, pipeline.
6. install as described in claim 1, it is characterized in that: there is smoke processing system, smoke processing system comprises sack cleaner, the deacidifying device being connected in turn, the entrance end of the sack cleaner smoke outlet set with tunnel furnace preheating section is communicated with, the entrance end of the sack cleaner humidity discharging mouth set with the dryer section of tunnel furnace is communicated with, and the exit end of sack cleaner is communicated with the entrance end of deacidifying device; The exit end of deacidifying device is connected with chimney.
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| CN201320713063.2U CN203558956U (en) | 2013-11-12 | 2013-11-12 | Municipal sludge recycling treatment plant |
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| CN201320713063.2U CN203558956U (en) | 2013-11-12 | 2013-11-12 | Municipal sludge recycling treatment plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109205984A (en) * | 2018-07-03 | 2019-01-15 | 杭州亿东岩土工程有限公司 | A kind of High water cut engineering method for rapid recycling of sludge and device |
| CN113352450A (en) * | 2021-03-25 | 2021-09-07 | 清华大学 | Sludge treatment system and sludge treatment method |
-
2013
- 2013-11-12 CN CN201320713063.2U patent/CN203558956U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109205984A (en) * | 2018-07-03 | 2019-01-15 | 杭州亿东岩土工程有限公司 | A kind of High water cut engineering method for rapid recycling of sludge and device |
| CN109205984B (en) * | 2018-07-03 | 2023-11-14 | 浙江亿东工程科技有限公司 | Method and device for rapidly recycling high-water-content engineering sludge |
| CN113352450A (en) * | 2021-03-25 | 2021-09-07 | 清华大学 | Sludge treatment system and sludge treatment method |
| CN113352450B (en) * | 2021-03-25 | 2022-05-27 | 清华大学 | Sludge treatment system and sludge treatment method |
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