CN104891769B - Sludge drying and incineration system and method - Google Patents

Sludge drying and incineration system and method Download PDF

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Publication number
CN104891769B
CN104891769B CN201510306826.5A CN201510306826A CN104891769B CN 104891769 B CN104891769 B CN 104891769B CN 201510306826 A CN201510306826 A CN 201510306826A CN 104891769 B CN104891769 B CN 104891769B
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sludge
drying
mud
air
incineration
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CN104891769A (en
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贺国清
唐政
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Changzhou Zhen Ye Plant Equipment Co Ltd
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Changzhou Zhen Ye Plant Equipment Co Ltd
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Abstract

The invention discloses a kind of sludge drying and incineration system and method, including wet mud storage tank, sludge high-pressure injection apparatus, drying unit, incinerator, smoke eliminator and feeder;The mud outlet end of the sludge charging line of wet mud storage tank is connected with the mud inlet of sludge high-pressure injection apparatus;The spray mud mouth of the shower nozzle of sludge high-pressure injection apparatus is connected with the sludge import of drying baker;First exhanst gas outlet of drying unit is connected with the air inlet of incinerator, and the second exhanst gas outlet of drying unit is connected with smoke eliminator;The exhanst gas outlet of incinerator is connected with drying unit.The sludge drying and incineration system of the present invention is dried to wet mud using the heat entrained by the high-temperature flue gas produced during sludge incineration, the heat that the drying sludge stage is produced using sludge incineration completely, it is not necessary to using other energy.

Description

Sludge drying and incineration system and method
Technical field
The present invention relates to sludge disposal technology, and in particular to a kind of sludge drying and incineration system and method.
Background technology
In recent years, reduce discharging with pro-active fiscal policy effect in national energy-saving, urban wastewater treatment is developed rapidly, Cities and towns water environment treatment obtains remarkable effect.But a large amount of sludge that urban wastewater treatment process is produced also are not commonly available effectively Process and dispose.These sludge contain the poisonous and harmful substances such as pathogen, heavy metal and persistent organism, without effective process Words, easily cause secondary pollution, direct threatening environment safety and public health, make sewage treatment facility to subsoil water, soil etc. Environmental benefit substantially reduce, while affect national energy-saving reduce discharging strategy implementation good effect.Sludge incineration is a kind of decrement Moisture in sludge and organic matter can be removed by change, stabilisation, innoxious processing method, this method completely, and kill cause of disease Body.
Such as 1270988 C of Chinese patent literature CN(Application number 200510038416.3)Disclose a kind of sludge incineration Processing method and Disposal System of Mud Burning, the method be the dewatered sludge that moisture content is 75%~85% is delivered to it is ciculation fluidized In the combustor of bed, the dusty gass that dewatered sludge is produced in storage are sent in the combustor of recirculating fluidized bed, take off Sewage sludge, dusty gass are burned together with coal, are burned the tail gas for producing and are discharged Jing after processing.The method is needed in burning sludge greatly Amount coal, dewatered sludge are 20~30: 70~80 with the weight ratio of coal, that is, burning one ton of sludge needs to consume 3.5~4 tons or so of coal Coal, sludge incineration cost are very high, and economic feasibility is poor.
Chinese patent literature CN 100351188C(Application number 200510111467.4)Disclose a kind of sludge drying with Burning process and its system and device, it is adaptable to the process of municipal sewage plant's activated sludge, dewatered sludge technological process is successively Through following device:Wet mud feed bin, weighing hopper, sludge mixer, sludge drier, granular separator, cooler, mummification are produced Product bunker, incinerator, smoke eliminator, described incinerator adopt bubbling fluidized bed incinerator, incinerator afterbody to be disposed with Economizer, air preheater, burn produced by high-temperature flue gas be respectively intended to heat conduction oil and cold air, not Jia Re after lead Deep fat is pumped to sludge drier by circulation and is dried wet mud.It is heat that the sludge drying system is used for being dried the energy of wet mud Conduction oil, i.e. high-temperature flue gas first transfer heat to conduction oil, and the conduction oil of heat is again being dried sludge.
With regard to the drying meanss of sludge, 103043879 A of Chinese patent literature CN(Application number 201210559711.3) Disclose a kind of device and method of utilization flue gas drying sludge, including drying tower, smoke inlet, sludge storage bin, screw feeding Device, atomization air flow entrance, aerodynamic atomization device, exhanst gas outlet, ash bucket and spiral discharge device, the drying tower are erect for one Cylindrical structure, the bottom of the drying tower is provided with smoke inlet, and the top of drying tower is provided with aerodynamic atomization device, aerodynamic atomization Device is connected with screw feeder and atomization air flow entrance simultaneously, and sludge storage bin, the drying tower are provided with screw feeder Top be provided with exhanst gas outlet, the bottom of drying tower is provided with ash bucket, and ash bucket is connected with spiral discharge device.When being dried, cigarette first Gas is entered from the smoke inlet of drying tower bottom, is flowed in tower from bottom to top;Secondly, dry wet mud is needed from sludge material Storehouse is by screw feeder, and is pooled to aerodynamic atomization device with atomization air flow, so as to form the sludge drop of very little;Connect down Come, the sludge liquid after atomization drops in and is dried tower top and sprays downwards, fall in tower under gravity, sludge drop and flue gas shape Into adverse current, and heat and mass being carried out with smoke contacts in dropping process, being allowed to be able to drying, dried sludge converges in tower Bottom ash bucket, by conveying worm discharge tower outside;Finally, complete dry flue gas drying top of tower exhanst gas outlet row Go out.
The content of the invention
The technical problem to be solved is to provide the low sludge drying of a kind of energy utilization rate height, processing cost and burns Burn system and method.
The technical scheme for realizing the object of the invention is a kind of sludge drying and incineration system, including wet mud storage tank, sludge are high Pressure injection apparatus, drying unit, incinerator, smoke eliminator and feeder.
Wet mud storage tank includes tank body and sludge charging line, mud outlet end and the sludge high-pressure injection dress of sludge charging line The mud inlet put is connected.
Sludge high-pressure injection apparatus are fixed on a framed side wallboard of the drying baker of drying unit, including shower nozzle holder assembly And shower nozzle, shower nozzle holder assembly is provided with mud inlet and air inlet;The spray mud mouth of the shower nozzle of sludge high-pressure injection apparatus and drying baker Sludge import is connected, and sludge passage is provided with shower nozzle.
Drying unit includes drying baker, Drying Bed, driving means, blower unit and heat exchanger, and Drying Bed is arranged on baking Inside dry case, driving means are connected with the driven roller of Drying Bed.
Drying baker is provided with the first air inlet, the first gas outlet, the second air inlet, the second gas outlet and the 3rd gas outlet.
First air inlet of drying baker is connected with corresponding air intake apparatus by air inlet pipeline, provides heat by air intake apparatus empty The flue gas with heat produced after gas or sludge incineration, the first air inlet are close with the gas approach of Drying Bed by corresponding pipeline Connection is closed, the first gas outlet of drying baker is connected by corresponding pipeline is closed with the exhanst gas outlet of Drying Bed.
Second air inlet, the second gas outlet and the 3rd gas outlet and drying baker inner space, the first gas outlet is by corresponding Exterior capsule of first pipeline with the second air inlet in drying baker connect, the first air-introduced machine is arranged on the first pipeline;Second Gas outlet is connected with the 3rd gas outlet by corresponding second pipeline;Second air-introduced machine is arranged on the right-hand member of the second pipeline, uses In the flue gas in drying baker is released;The outlet of the second air-introduced machine is by pipeline and the closed company of air inlet of smoke eliminator It is logical;3rd air-introduced machine is arranged on the left end of the second pipeline, and the gas outlet of the 3rd air-introduced machine passes through corresponding pipeline and heat exchanger Gas approach be connected.
Incinerator includes defeated mud device, pay-off, incinerator and temperature sensor, mud inlet end and the baking of defeated mud device The discharging opening sealing connection of equipment for drying, the mud outlet end of defeated mud device are connected with the charging aperture sealing of pay-off, pay-off Discharging opening is connected with the charging aperture sealing of incinerator.
The gas outlet of feeder is by each steam line and sludge high-pressure injection apparatus and the pay-off of incinerator It is connected.
A diameter of 12 millimeters of the sludge passage positioned at mud extraction section of the shower nozzle of the sludge high-pressure injection apparatus are to 20 millis Rice;First air inlet of drying baker is connected with the exhanst gas outlet of the incinerator of incinerator by air inlet pipeline.
The feeder includes air accumulator, air compressor and steam line, and the gas outlet of air accumulator is supplied by first Feed channel, the 3rd steam line and the 4th steam line are connected with the cold air import of heat exchanger, and the steam of heat exchanger goes out Mouth is connected with the air inlet of the shower nozzle holder assembly of sludge high-pressure injection apparatus by the 6th steam line.
The exhanst gas outlet of the heat exchanger is connected with the air inlet of the incinerator of sludge incineration device.
The wet mud storage tank also includes stirring motor, stirrer paddle and sludge return pipe, and stirring motor is arranged on tank The stirring paddle of the bottom outside of body, the bottom-up inner chamber for stretching into tank body of the motor shaft of stirring motor, motor shaft and tank interior Leaf connects;The mud inlet end mouth of sludge return pipe is connected with the mud return mouth of sludge injection apparatus, the mud extraction of sludge return pipe Port is connected with the mud entrance that returns on the side wall of tank body.
The smoke eliminator include the first cleaner unit, the second cleaner unit, drying tower, corona-type dedusting odor removal and Chimney;The upper end gas approach of the first cleaner unit is connected with the exhanst gas outlet of heat exchanger, the lower end flue gas of the first cleaner unit Outlet is connected with the upper end gas approach of the second cleaner unit, and lower end exhanst gas outlet and the lower end of drying tower of the second cleaner unit are entered QI KOU is connected, and the gas outlet of drying tower upper end is connected with the inlet end of corona-type dedusting odor removal, and corona-type dedusting is removed The outlet side of smelly device is connected with the lower end air inlet of chimney.
First cleaner unit, the second cleaner unit are cyclone dust extractor, for removing the granule in flue gas;The drying tower In it is bottom-up place some interlayers, place desiccant on every layer of interlayer, for removing the steam in flue gas;The corona-type is removed Dirt odor removal is used to remove the granule and foul smell in flue gas;The lower end of the chimney arranges water shower device.
A kind of method of sludge drying and incineration system anhydration and incineration sludge as above, comprises the following steps:
1. the wet mud that the moisture content that municipal sewage plant produces is 75%~85% is conveyed into the tank of wet mud storage tank In body, open sludge pump and wet mud is sent in sludge high-pressure injection apparatus by tank body;Air compressor and air accumulator are opened, High-pressure hot air is passed through to the air inlet of sludge high-pressure injection apparatus, wet mud is taken out of shower nozzle and entered and dried by the negative pressure for now producing In the drying baker of equipment for drying, wet mud is dispersed as vaporific into the moment of drying baker.
2. the flue gas that temperature is 100 DEG C~120 DEG C is filled with the drying baker of drying unit, vaporific sludge is in the process of decline In with flue gas heat exchange;Sludge is finally scattered on Drying Bed under gravity, and the temperature on Drying Bed surface is 300 DEG C~ 310 DEG C, the moisture content in sludge is evaporated in drying baker rapidly, and sludge is attached on Drying Bed surface, is moved with Drying Bed surface It is dynamic, it is further dried in moving process, sludge is finally peeled off from Drying Bed surface by scraper plate and falls into the discharging of drying baker In bucket.
3. the defeated mud device of sludge incineration device is delivered to the dewatered sludge in discharge bucket in pay-off, and dewatered sludge is beaten The middle burning of incinerator is entered after being broken into powder;The flue gas produced after sludge incineration is flowed out from exhanst gas outlet, through air inlet pipe Road enters the Drying Bed inner chamber of drying unit.
4. the high-temperature flue gas produced after burning are introduced into Drying Bed inner chamber, enter back into drying baker after flowing out from Drying Bed inner chamber Inner chamber, enters smoke eliminator from the part of smoke for being dried box cavity outflow, and flue gas is through the first cleaner unit, the second dedusting After device dedusting, it is dried in drying tower, then flows into the foul smell that corona-type dedusting odor removal is removed in gas, finally in cigarette The bottom water of chimney is discharged from chimney after drenching, and enters from another part flue gas for being dried box cavity outflow and burn after heat exchanger In stove.
Above-mentioned steps high-pressure hot air 1. used be the high pressure cold air flowed out from air accumulator through heat exchanger, with from What the flue gas flowed out in drying baker was obtained after carrying out heat exchange.Flow velocity when sludge is sprayed from sludge high-pressure injection apparatus is 1m/s to 3m/s.
Temperature is controlled in above-mentioned incinerator for 800 DEG C~850 DEG C.
2. above-mentioned steps are dried after terminating, and in the discharge bucket of drying baker, the moisture content of sludge is 5%~10%.
The present invention has positive effect:(1)The sludge drying and incineration system of the present invention utilizes what is produced during sludge incineration Heat entrained by high-temperature flue gas is dried to wet mud, the heat that the drying sludge stage is produced using sludge incineration completely, Other thermals source need not be used.
The drying and incineration system of the present invention when the wet mud to moisture content about 80% is dried, first by wet mud Send into injection apparatus in, sludge from nozzle ejection after with the drying baker of vaporific entrance drying device in, the sludge of spray pattern exists Contact with the high-temperature flue gas being full of in drying baker during decline, carry out the drying of first stage, due to sludge be it is vaporific, can It is fully contacted with high-temperature flue gas.Vaporific sludge is finally scattered in the steel strip surface of the drying bed in drying device under gravity One end, the temperature of steel strip surface is heated to 300 DEG C or so, after mud granule is contacted with steel band by the high-temperature flue gas after burning, Moisture in sludge evaporates rapidly, while sludge is moved toward discharging opening direction with steel band, through the drying of second stage steel band, From drying baker discharge moisture percentage in sewage sludge have dropped to 5%~10%, the moisture content be 5%~10% sludge smash it is powdered after Fully can burn moment in 800 DEG C~850 DEG C of burner hearth.
(2)The sludge drying and incineration system of the present invention employs sludge injection apparatus, and sludge injection apparatus are beaten using air-flow Scattered sludge, the air-flow for being used before into injection apparatus, from air accumulator flow out after, through waste-heat recovery device with from drying baker The flue gas of discharge carries out entering in injection apparatus after heat exchange, therefore to break up the air-flow of sludge be thermal current, and thermal current is being broken up The effect of preheating is served during sludge.The gas that air accumulator flows out is heated what the heat of employing was produced also from sludge incineration Heat, it is not necessary to using extra heat.
(3)Drying Bed is provided with the drying baker of the sludge drying device that the sludge drying and incineration system of the present invention is adopted, The inside of Drying Bed is closed cavity, the high-temperature flue gas produced after sludge incineration is passed directly in this inner chamber, the high temperature of entrance Up to 280 DEG C~320 DEG C of the temperature of flue gas, high-temperature flue gas make temperature of steel strips rise to 300 DEG C or so steel band heating, and steel band is to dissipating The sludge for falling on is dried;High-temperature flue gas into Drying Bed inner chamber are completed after heat exchange with steel band, from Drying Bed Flow out, the box house of drying baker is delivered to by air-introduced machine, now still up to 100 DEG C~120 DEG C of the temperature of flue gas, can heat The vaporific sludge for entering is dried from sludge inlet;Flue gas in drying baker is completed after heat exchange with vaporific sludge, entrainment of water The flue gas of steam is discharged from drying baker, is partially into waste-heat recovery device, carries out heat exchange with the gas flowed out from air accumulator, The gas that air accumulator flows out can be heated to 90 DEG C~100 DEG C, and the gas after the heating enters sludge injection apparatus, is breaing up dirt Play a part of to preheat sludge during mud, another part does purified treatment into smoke eliminator.Therefore the present invention Drying and incineration system is greatly improved to the utilization rate of flue gas heat, after making full use of sludge incineration due to the setting of system structure The heat of generation, drying stage are not required to external energy, reduce the cost of Treatment of Sludge.
(4)The sludge incinerator that the sludge drying and incineration system of the present invention is adopted maintains in-furnace temperature for 800 DEG C~850 DEG C, sludge is sufficiently burned and sludge incineration will not produce bioxin at such a temperature.
The pay-off of sludge incinerator is provided with shredder assemblies, after the sludge after dehydration and heat drying process is smashed again Playpipe is sent into by feeding material component, playpipe is sprayed into broken Powdered sludge in incinerator by pressure-air, Sludge fully burnt into moment in incinerator, effectively can carry out minimizing and harmless treatment to sludge, after sludge incineration Residue rate for wet mud gross mass 5% to 8%.
Incinerator is provided with inner core, and sludge fully burns in inner core, and inner core can protect electric furnace silk, extension device to use Life-span.
Incinerator is provided with base, is provided with through its upper and lower sludge ash passage, from up in sludge ash passage in the middle part of base Under be sequentially provided with the first dust block board of drawing and pulling type and the second dust block board, can just carry out deashing operation without blowing out, and in deashing Inner flue gas of the stove does not leak simultaneously, it is to avoid pollute environment and operator is damaged.
It is provided with temperature sensor in sludge incinerator, temperature sensor is used to monitoring the temperature in inner core, and by collection Data feedback adopts Industry Control PLC temperature control module to corresponding automatic temperature-adjusting control system, automatic temperature-adjusting control system PID fine adjustment is carried out, using the frequency switching control electric furnace silk work for changing outfan dutycycle, this controllable way Being precisely controlled for temperature can be realized taking into account except the other factors of electric furnace silk in stove, its precision reachable ± 1 is taken the photograph Family name's degree, so as to ensure that sewage sludge powder moment under 800 degrees Celsius to 850 degrees Celsius of furnace temperature fully burns, it is to avoid produce Er Evil English.
(5)When the sludge drying and incineration system of the present invention is processed to the flue gas flowed out from drying baker, flue gas leads to successively The first cleaner unit, the second cleaner unit, drying tower, corona-type dust arrester and water shower device are crossed, last flue gas is discharged from chimney, inspection Survey expellant gas index as follows:Bioxin, carbon monoxide, nitrogen oxides, sulfur dioxide, hydrogen chloride, hydrargyrum, cadmium thallium and its chemical combination The indices such as thing, antimony arsenic lead chromium-copper manganese nickel and its compound, particulate matter are well below GB18485-2014《Consumer waste incineration Environmental capacity standard》Setting.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the sludge drying and incineration system of the present invention;
Fig. 2 is the dimensional structure diagram of sludge drying and incineration system when observing from Fig. 1 rears;
Dimensional structure diagrams of the Fig. 3 for the sludge high-pressure injection apparatus of sludge drying and incineration system;
Front views of the Fig. 4 for Fig. 3;
A-A sectional views of the Fig. 5 for Fig. 4;
Dimensional structure diagrams of the Fig. 6 for the shower nozzle of sludge high-pressure injection apparatus;
Fig. 7 is the connection diagram of sludge high-pressure injection apparatus and each road pipeline;
Dimensional structure diagrams of the Fig. 8 for the drying unit of sludge drying and incineration system;
Top views of the Fig. 9 for Fig. 8;
B-B sectional views of the Figure 10 for Fig. 9;
Dimensional structure diagrams of the Figure 11 for the Drying Bed of drying unit;
Dimensional structure diagrams of the Figure 12 for the sludge incineration device of sludge drying and incineration system;
Top views of the Figure 13 for Figure 12;
C-C sectional views of the Figure 14 for Figure 13;
Labelling in above-mentioned accompanying drawing is as follows:
Wet mud storage tank 1, tank body 11, stirring motor 12, stirrer paddle, sludge pump 13, sludge charging line 14, sludge are returned Flow tube road 15;
Sludge high-pressure injection apparatus 2, shower nozzle holder assembly 21, cylinder body 21-1, dividing plate 21-1-1, mud chamber 21-1a, 21-1b, Nozzle set 21-1-2, mud inlet 21-1-3, mud return mouth 21-1-4, air inlet 21-1-5, gland 21-2, shower nozzle 22, sludge passage 22-1, enters mud section 22a, enters mud hole 22a-1, sealed separation section 22b, compresses conical surface 22b-1, air inlet section 22c, air inlet 22c-1, Seal face 22c-2, mud extraction section 22d, cleaning assemblies 23, double-acting cylinder 23-1, cylinder rod 23-1-1, the first air inlet 23-1- 2, the second air inlet 23-1-3, cylinder cap 23-1-2, clean seal pad 23-2,
Drying unit 3, drying baker 31, sludge import 31-1, discharge bucket 31-2, the first air inlet 31-3, the first gas outlet 31-4, the second air inlet 31-5, the second gas outlet 31-6, the 3rd gas outlet 31-7, Drying Bed 32, driven roller 32-1, driven voller 32-2, steel band 32-3, front side board 32-4, Drying Bed air inlet 32-4-1, Drying Bed gas outlet 32-4-2, back side panel 32-5 are scraped Plate 32-6, shrouding 32-7, driving means 33, blower unit 34, the first air-introduced machine 34-1, the second air-introduced machine 34-2, the 3rd air inducing Machine 34-3, the first pipeline 34-4, the second pipeline 34-5, heat exchanger 35;
Incinerator 4, defeated mud device 40, pay-off 41, hopper 41-1, cylindrical section 41-1-1, shredder assemblies 41-2, sieve Cylinder 41-2-1, sieve aperture 41-2-1-1, mixing component 41-2-2, motor 41-2-3, feeding material component 41-3, helical blade 41- 3-1, the second motor 41-3-2, playpipe 41-4, gas-tpe fitting 41-4-1, incinerator 42, pedestal 42-1, ash chute 42- 1-1, base 42-2, sludge ash passage 42-2-1, annular airflow pipe 42-2-2, gas outlet 42-2-2-1, the first dust block board 42-2- A, the second dust block board 42-2-b, base air inlet 42-2-3, housing 42-3, heat-insulation layer 42-4, zone of heating 42-5, inner core 42-6, Air inlet 42-6-1, sludge import 42-7, smoke exhaust pipe 42-8, exhanst gas outlet 42-8-1, Explosion-proof cap 42-8-2, temperature sensor 43;
Smoke eliminator 5, the first cleaner unit 51, the second cleaner unit 52, drying tower 53, corona-type dedusting odor removal 54, chimney 55;
Feeder 6, air accumulator 61, air compressor 62, steam line 63, the first steam line 63-1, the second supply Pipeline 63-2, the 3rd steam line 63-3, the 4th steam line 63-4, the 5th steam line 63-5, the 6th steam line 63-6;
Air inlet pipeline 100.
Specific embodiment
The description in the orientation of the present invention is carried out according to the orientation shown in Fig. 1, namely the direction up and down shown in Fig. 1 is The direction up and down of description, a side of court of Fig. 1 institutes is front, is rear away from a side of Fig. 1.
(Embodiment 1, sludge drying and incineration system)
See Fig. 1, the sludge drying and incineration system of the present embodiment includes wet mud storage tank 1, sludge high-pressure injection apparatus 2, dries Equipment for drying 3, incinerator 4, smoke eliminator 5 and feeder 6.
Wet mud storage tank 1 includes tank body 11, stirring motor 12, stirrer paddle, sludge pump 13, sludge charging line 14 and dirt Mud reflux line 15.Stirring motor 12 is arranged on the bottom outside of tank body 11, and the motor shaft of stirring motor 12 is bottom-up to be stretched into The inner chamber of tank body 11, motor shaft are connected with the stirrer paddle inside tank body 11, drive stirrer paddle rotation.Sludge pump 13 is arranged on The bottom outside of tank body 11, the mud inlet of sludge pump 13 are connected with the mud mouth of 11 bottom of tank body, the mud mouth of sludge pump 13 It is connected with the mud inlet end of sludge charging line 14.The mud outlet end of sludge charging line 14 is entered with sludge high-pressure injection apparatus 2 Mud mouth is connected.The mud inlet end mouth of sludge return pipe 15 is connected with the mud return mouth of sludge injection apparatus 2, sludge return pipe 15 mud extraction port is connected with the mud entrance that returns on the side wall of tank body 11.
Sludge high-pressure injection apparatus 2 are fixed on a framed side wallboard of the drying baker 31 of drying unit 3(It is left in Fig. 1 Wallboard), the shower nozzle 22 of sludge high-pressure injection apparatus 2 spray mud mouth be connected with the sludge import 31-1 of drying baker 31.
See Fig. 3 to Fig. 7, sludge high-pressure injection apparatus 2 include shower nozzle holder assembly 21, shower nozzle 22 and cleaning assemblies 23.
See Fig. 5, cleaning assemblies 23 includes double-acting cylinder 23-1 and clean seal pad 23-2.Pad 23-2 is closed for clean seal It is fixedly installed in the right end of cylinder rod 23-1-1 of double-acting cylinder 23-1.The right-hand member and left end of double-acting cylinder 23-1 point First air inlet 23-1-2 and the second air inlet 23-1-3 is not provided with, the first air inlet 23-1-2 is set near clean seal pad 23-2 Put, positioned at the right side of cylinder 23-1;Second air inlet 23-1-3 is positioned at the left side of cylinder 23-1(The outlet of cylinder is not drawn in figure Mouthful).
Shower nozzle holder assembly 21 includes cylinder body 21-1 and gland 21-2.Gland 21-2 screws the closed right side for being fixed on cylinder body 21-1 On end.Gland 21-2 central authorities are provided with the center through hole through its left and right.Double-acting cylinder 23-1 is located by its cylinder rod 23-1-1 Side the closed cylinder body 21-1 for being fixed on shower nozzle holder assembly 21 of cylinder cap 23-1-2 left end on.The cylinder of double-acting cylinder 23-1 The right side central of lid 23-1-2 is provided with the shower nozzle installing hole coaxial with cylinder rod 23-1-1.Dividing plate 21- is provided with the middle part of cylinder body 21-1 Cylinder body 21-1 inner chambers are divided into mud chamber 21-1a on the left of dividing plate 21-1-1 and positioned at dividing plate 21- by 1-1, dividing plate 21-1-1 Air chamber 21-1b on the right side of 1-1.The through hole through its left and right is provided with the middle part of dividing plate 21-1-1, the coaxial airtight connection in through hole sets There is nozzle set 21-1-2.The guiding conical surface is provided with the inside of the right-hand member of nozzle set 21-1-2.On rear side of cylinder body 21-1, left part is provided with and sludge The mud inlet 21-1-3 that chamber 21-1a is communicated.The mud return mouth 21-1-4 communicated with mud chamber 21-1a is provided with rear side of cylinder body 21-1, is returned , positioned at the right side of mud inlet 21-1-3, mud return mouth 21-1-4 is away from cleaning assemblies 23 for mud mouth 21-1-4.It is provided with front side of cylinder body 21-1 The air inlet 21-1-5 communicated with air chamber 21-1b, air inlet 21-1-5 are connected with high-pressure air feed device 6 by pipeline.
See Fig. 7, the mud inlet 21-1-3 of the cylinder body 21-1 of shower nozzle holder assembly 21 and the sludge charging line of wet mud storage tank 1 14 mud outlet end is connected, and mud return mouth 21-1-4 is connected with the mud inlet end of the sludge return pipe 15 of wet mud storage tank 1.Cleaning The first air inlet 23-1-2 and the second air inlet 23-1-3 of the double-acting cylinder 23-1 of component 23 passes through pipeline and valve respectively It is connected with feeder 6.
See Fig. 5 and Fig. 6, shower nozzle 22 is steel integral piece.Shower nozzle 22 is divided into from left to right into mud section 22a, sealing point Compartment 22b, air inlet section 22c and mud extraction section 22d.Shower nozzle 22 is axially arranged with the sludge passage 22-1 through its left and right along which.Shower nozzle 22 left end for entering mud section 22a inserts double-acting cylinder 23-1's from right to left through after nozzle set 21-1-2 and dividing plate 21-1-1 It is in the shower nozzle installing hole of cylinder cap 23-1-2, coaxial with cylinder rod 23-1-1.Clean seal pad 23-2 is located at the sludge of shower nozzle 22 and leads to In road 22-1, for the sludge in sludge passage 22-1 is released outside shower nozzle 22.Enter mud section 22a to set along its circumferential angle at equal intervals Have 3 to 5 communicate with sludge passage 22-1 enter mud hole 22a-1, the present embodiment is 4.It is along left and right that 4 are entered mud hole 22a-1 To the kidney ellipsoid hole for arranging.It is provided with corresponding with the guiding conical surface of nozzle set 21-1-2 on the left of sealed separation section 22b of shower nozzle 22 Compression conical surface 22b-1.The guiding conical surface of the compression conical surface 22b-1 and nozzle set 21-1-2 of shower nozzle 22 is brought into close contact to form closed Connection.The air inlet section 22c left part of shower nozzle 22 is provided with 4 to 8 air inlet 22c-1 along its circumferential angle at equal intervals, and the present embodiment is 6 It is individual.The axis of each air inlet 22c-1 is 0 degree to 40 degree with the angle α of the axis of the sludge passage 22-1 of shower nozzle 22, the present embodiment For 30 degree.Seal face 22c-2 is provided with the right side of air inlet section 22c of shower nozzle 22.Mud extraction section 22d of shower nozzle 22 is from gland 21-2 Stretched out outside gland 21-2 to the right in the through hole of centre, outside cylinder body 21-1.Positioned at mud extraction section 22d sludge passage 22-1 it is a diameter of 12 millimeters to 20 millimeters, the present embodiment is 18 millimeters.Shower nozzle 22 is fixedly installed in cylinder body 21-1 by gland 21-2.Gland The part airtight connection contacted with the seal face 22c-2 of air inlet section 22c of shower nozzle 22 of 21-2.Mud chamber 21-1-1 and air Chamber 21-1-2 is connected by shower nozzle 22.
When sludge high-pressure injection apparatus 2 are used, the pending mud in tank body 11 is passed through by nozzle boss by sludge pump 13 The mud inlet 21-1-3 of component 21 squeezes into mud chamber 21-1a, and sludge enters sludge passage by the mud hole 22a-1 that enters of shower nozzle 22 22-1, and move right along sludge passage 22-1, flow velocity when sludge is sprayed from sludge passage 22-1 is 1m/s to 3m/s, this Embodiment is 2m/s.High-pressure hot air is sent into by air inlet 21-1-5 by air chamber 21-1b by air compressor, through spray The air inlet 22c-1 of 22 air inlet section 22c enters sludge passage 22-1, and sprays to the right, and the negative pressure for now producing is by sludge Sludge in passage 22-1 takes shower nozzle 22 out of in drying baker 31, and sludge is broken up rapidly to nebulize, the surface of vaporific sludge Product is greatly improved, and the surface area moment of sludge can increase tens thousand of times, such that it is able to greatly improve heat absorption efficiency.Sludge high-pressure sprays When the sludge passage 22-1 of the shower nozzle 22 of device 2 needs cleaning, ventilate in the second air inlet 23-1-3 of cleaning assemblies 23, Under gas pressure, piston is moved from left to right, and the clean seal pad 23-2 that drive is connected with piston rod is in sludge passage 22-1 There is from left to right to move, the sludge remained in sludge passage 22-1 is flowed out from mud return mouth 21-1-4, Jing sludge return pipes 15 flow back Into storage tank 11.When sludge high-pressure injection apparatus 2 work, ventilate in the first air inlet 23-1-2, piston is by from right side Pressure, clean seal pad 23-2 will not be moved in sludge passage 22-1.
See Fig. 8 to Figure 11, drying unit 3 includes drying baker 31, Drying Bed 32, driving means 33, blower unit 34 and heat Exchanger 35.
Blower unit 34 includes the first air-introduced machine 34-1, the second air-introduced machine 34-2 and the 3rd air-introduced machine 34-3.
The left side central portion top of drying baker 31 is provided with sludge import 31-1, sludge import 31-1 and sludge high-pressure injection apparatus The spray mud mouth of 2 shower nozzle 22 is connected.The downside left part of drying baker 31 is provided with discharge bucket 31-2;Under the front side right part of drying baker 31 Side is provided with the first air inlet 31-3;First air inlet 31-3 is connected with corresponding air intake apparatus by air inlet pipeline 100, by air inlet The flue gas with heat that equipment is produced after providing hot-air or sludge incineration.First is provided with the downside of the front side left part of drying baker 31 to go out QI KOU 31-4;The second air inlet 31-5 is provided with the upside of the front side left part of drying baker 31;The upside right part of drying baker 31 is provided with second Gas outlet 31-6, upside left part are provided with the 3rd gas outlet 31-7.The right tank wall of drying baker 31 is provided with maintenance door(In Figure of description It is not drawn into).First gas outlet 31-4 is by corresponding first pipeline 34-4 and the second air inlet 31-5 in the outside of drying baker 31 Closed connection;First air-introduced machine 34-1 is arranged on the first pipeline 34-4, by the first air-introduced machine 34-1 by the first gas outlet 31- 4 the second air inlets of flue gas Jing 31-5 out are sent in drying baker 31.
See that Fig. 1, the second gas outlet 31-6 are connected with the 3rd gas outlet 31-7 by corresponding second pipeline 34-5;Second Air-introduced machine 34-2 is arranged on the right-hand member of the second pipeline 34-5, for the flue gas in drying baker 31 is released, the second air-introduced machine 34- 2 gas outlet is connected by pipeline is closed with the air inlet of smoke eliminator 5.3rd air-introduced machine 34-3 is arranged on the second pipeline The left end of 34-5, for flue gas is discharged drying baker 31, the gas outlet of the 3rd air-introduced machine 34-3 is by corresponding pipeline and heat friendship The gas approach of parallel operation 35 is connected, and the heat collection of flue gas can be used.
The gas flowed out from the second gas outlet 31-6 and the 3rd gas outlet 31-7 is divided into two-way, and the first via is by the second air-introduced machine 34-2 is extracted out and is purified into smoke eliminator 5, in the 3rd air-introduced machine 34-3 suction heat exchanger 35 of secondary route, is passed through Gas after heat exchange is burned in sludge incineration device 4 by pipeline.
See Figure 10 and Figure 11, Drying Bed 32 is arranged on inside drying baker 31, including driven roller 32-1, driven voller 32-2, steel Band 32-3, front side board 32-4, back side panel 32-5, scraper plate 32-6 and shrouding 32-7.Front side board 32-4 and back side panel 32-5 are wedge Shape.The right part of front side board 32-4 is provided with Drying Bed air inlet 32-4-1, and left part is provided with Drying Bed gas outlet 32-4-2.Drying Bed enters QI KOU 32-4-1 is connected by corresponding pipeline sealing with the first air inlet 31-3 of drying baker 31.Drying Bed gas outlet 32-5-2 Connected by corresponding pipeline sealing with the first gas outlet 31-4 of drying baker 31.It is right before and after front side board 32-4 and back side panel 32-5 Title is arranged in drying baker 1, and in left low right high setting.Driven roller 32-1 is rotatably arranged on front side board by corresponding bearing Between the right-hand member of 32-4 and back side panel 32-5.The roll shaft of driven roller 32-1 is stretched out outside drying baker 31 backward, and driven roller 32-1 passes through Corresponding bearing rotates airtight connection with the rear box wall of drying baker 31.Driven voller 32-2 is rotatably arranged on front side board 32-4 and rear side Between the left end of plate 32-5.Steel band 32-3 surrounds driven roller 32-1 and driven voller 32-2 is arranged, and drives which suitable by driven roller 32-1 Hour hands are rotated.Scraper plate 32-6 is arranged between the left end of front side board 32-4 and back side panel 32-5, for will adhere on steel band 32-3 The dried sludge of being heated peel off.Shrouding 32-7 has 5 pieces, is separately positioned on the upper and lower both sides in front side board 32-4 rear portions, rear side Plate 32-5 front portions are up and down between both sides and the left end of front side board 32-4 and back side panel 32-5;Driven roller 32-1, steel band 32-3, front side Substantially closed cavity is formed between plate 32-4, back side panel 32-5 and shrouding 32-7.Positioned at front side board 32-4 and back side panel 32-5 Left end between shrouding 32-7 positioned at driven voller 32-2 and front side board 32-4 Drying Bed gas outlet 32-4-2 between.
Driving means 33 include motor 33-1 and reduction box 33-2.Drying Bed is driven by reduction box 33-2 by motor 33-1 32 driven roller 32-1 is rotated.
When sludge drying device 3 is used, the flue gas for preferably using sludge incineration generation is dried.By corresponding air inlet Flue gas is first sent in the cavity of Drying Bed 32 by equipment by the first air inlet 31-3 of 100 drying case 31 of air inlet pipeline, cigarette The heat of gas makes steel band 32-3 be warmed up to 300 DEG C or so, and be less than 310 degrees Celsius, with the flue gas that steel band completes heat exchange by In air-introduced machine suction drying baker 31, now the flue-gas temperature in drying baker 31 is still up to 100 DEG C~120 DEG C.
Jing after in sludge import 31-1 penetrating drying bakers 1 of the wet mud by 2 drying case 31 of sludge high-pressure injection apparatus Cross two stage dry run, first sludge in into drying baker 31 when be dispersed as vaporific, moment increase contact area, with The flue gas being full of in drying baker 31 carries out heat exchange, now has part moisture content vaporization in flue gas, and then vaporific sludge is scattered On the steel band 32-3 of Drying Bed 32, as steel band 32-3 has 300 DEG C or so of temperature, therefore when sludge falls on steel band 32-3 Afterwards, the moisture content in sludge is rapidly evaporated in drying baker 31, and sludge is then attached on steel band 32-3, with steel band 32-3 up times Pin is rotated, and keeps relevant temperature to be further dried, when sludge is moved at scraper plate 32-6, by scraper plate in rotation process 32-6 peels off from steel band 32-3 and discharges after falling into the discharge bucket 31-2 of drying baker 31, and discharge is heated dried sludge It is collected and delivers to corresponding sludge incinerator to be burned.
After drying sludge, moisture content therein is entered in flue gas, is processed as the composition of flue gas, part of smoke Jing second Air-introduced machine 34-2 enters smoke eliminator 5 after discharging drying baker 31, another part flue gas is extracted out by the 3rd air-introduced machine 34-3 and sent Burned into incinerator, during entering to incinerator, the heat of the part of flue gas is inhaled again by heat exchanger 35 Receive and utilize.In the present embodiment, the first air inlet 31-3 of sludge drying device 3 is by air inlet pipeline 100 and the flue gas of incinerator 4 Export closed connection.
See Figure 12 to 14, sludge incineration device 4 includes defeated mud device 40, pay-off 41, incinerator 42 and temperature sensing Device 43.
See Fig. 1, the defeated mud device 40 is screw rod conveyer, the mud inlet end of defeated mud device 40 and the discharging of drying unit 3 The discharging opening sealing connection of bucket 31-2, the mud outlet end of defeated mud device 40 are connected with the charging aperture sealing of the hopper 41-1 of pay-off 41 It is logical.
See Figure 12 and Figure 14, pay-off 41 includes hopper 41-1, shredder assemblies 41-2, feeding material component 41-3 and playpipe 41-4.Hopper 41-1 tops are in cuboid, and bottom is in up big and down small truncated cone-shaped, and middle part connects round transition for side.Expect during use Struggling against, 41-1 upper ends are closed with the mud outlet end of defeated mud device 40 to be connected, and hopper 41-1 lower ends are set by the closed connections of cylindrical section 41-1-1 Put on the upside of the middle part of playpipe 41-4.Shredder assemblies 41-2 include screen drum 41-2-1, mixing component 41-2-2 and drive electricity Machine 41-2-3.In semicolumn hull shape, screen drum 41-2-1 opening upwards are arranged in hopper 41-1 tops screen drum 41-2-1, screen drum 41-2-1 is provided with some row sieve aperture 41-2-1-1 along its axis, and circumferences of each row sieve aperture 41-2-1-1 along screen drum 41-2-1 sets Put.Stirring bar constructions of the mixing component 41-2-2 by a rotary shaft and some settings on the rotating shaft, rotary shaft is along screen drum 41- The axial rotation of 2-1 is arranged on hopper 41-1 tops, coaxial with screen drum 41-2-1, and drives its turn by motor 41-2-3 It is dynamic, so as to the sludge for driving each stirring rod be dehydrated and after heat drying is processed smashes powdered and from the sieve of screen drum 41-2-1 Extrude in the 41-2-1-1 of hole.Feeding material component 41-3 includes helical blade 41-3-1 and the second motor 41-3-2.Helical blade The rotary shaft vertical of 41-3-1 is arranged, and drives helical blade 41-3-1 to rotate by the second motor 41-3-2.Helical blade 41- 3-1 is arranged in the bottom of hopper 41-1, and the lower end of helical blade 41-3-1 is with the cylindrical section 41-1-1's of hopper 41-1 lower ends Inwall contacts to form closed screw conveying structure, quantitatively can be conveyed;Feeding material component 41-3 is for by quilt in hopper The sewage sludge powder smashed is sent in playpipe 41-4.The left end of playpipe 41-4 is provided with gas-tpe fitting 41-4-1, gas-tpe fitting 41- 4-1 is used to connect high-pressure pump;The right-hand member of playpipe 41-4 is provided with adpting flange.Playpipe 41-4 will be beaten by pressure-air Broken sewage sludge powder is sprayed in incinerator 42.Pay-off 41 is supported and fixed on the drying of drying unit 3 by corresponding installing rack On the wall of case 31(It is not drawn in Figure of description).
Incinerator 42 includes pedestal 42-1, base 42-2, housing 42-3, heat-insulation layer 42-4, zone of heating 42-5, inner core 42- 6th, sludge import 42-7 and smoke exhaust pipe 42-8.Opening upwards and ash chute 42-1-1 forward are provided with the middle part of pedestal 42-1.Base 42-2 is arranged on above pedestal 42-1.It is provided with the middle part of base 42-2 through its upper and lower sludge ash passage 42-2-1, along base 42- 2 are circumferentially with annular airflow pipe 42-2-2, if the inner part in the upside of annular airflow pipe 42-2-2 is circumferentially with along which doing QI KOU 42-2-2-1.It is sequentially provided with drawing and pulling type the first dust block board 42-2-a and second gear in sludge ash passage 42-2-1 from top to bottom Hawk 42-2-b.The base air inlet 42-2-3 being connected with annular airflow pipe 42-2-2 is provided with the right side of base 42-2.Housing 42- The upside of the 3 closed annular airflow pipe 42-2-2 for being arranged on base 42-2.Heat-insulation layer 42-4, zone of heating 42-5 and inner core 42-6 from It is outer to be successively set in housing 42-3 to interior.Zone of heating 42-5 is heated for electric furnace silk.Inner core 42-6 lower ends are led to sludge ash Road 42-2-1 is communicated.The gas outlet 42-2-2-1 of annular airflow pipe 42-2-2 is located between zone of heating 42-5 and inner core 42-6.It is interior Cylinder 42-6 is provided with some air inlet 42-6-1.Sludge import 42-7 airtight connections are arranged in the upper right of inner core 42-6, It is connected with the external world through after heat-insulation layer 42-4 and housing 42-3 from inside to outside.The right-hand member of sludge import 42-7 and playpipe 41-4 The closed connection of right-hand member.Smoke exhaust pipe 42-8 is closed to be arranged on housing 42-3 upper ends, is connected with inner core 42-6.Smoke exhaust pipe 42-8 Rear side be provided with exhanst gas outlet 42-8-1, be hinged at the top of smoke exhaust pipe 42-8 and be provided with Explosion-proof cap 42-8-2.Temperature sensor 43 For monitoring the temperature in inner core 42-6, and corresponding automatic temperature-adjusting control system, automatic temperature-adjusting are given by the data feedback of collection Control system carries out PID fine adjustment using Industry Control PLC temperature control module, using the frequency for changing outfan dutycycle On-off control electric furnace silk work, this controllable way can in stove except the other factors of electric furnace silk are taken into account Being precisely controlled for temperature is realized, its precision is reachable ± 1 degree Celsius, so as to ensure sewage sludge powder at 800 degrees Celsius to 850 degrees Celsius Furnace temperature lower moment fully burn, it is to avoid produce bioxin.
When sludge incineration device 4 is used, is first powered and in-furnace temperature is increased to 800 degrees centigrades.Sludge it is dehydrated and Sent in hopper 41-1 by corresponding feed arrangement 40 after heat drying process, the stirring rod of the crushed component 41-2 of sludge is smashed It is powdered and from the sieve aperture 41-2-1-1 of screen drum 41-2-1 extrude, then by feeding material component 41-3 send into playpipe 41-4 In.Air is sent into by playpipe 41-4 by high-pressure pump, the sewage sludge powder in playpipe 41-4 is passed through incinerator 42 by air-flow Sludge import 42-7 be injected in the inner core of incinerator 42, sewage sludge powder enter incinerator 42 inner core after formed moment it is abundant The poisonous and harmful substances such as Organic substance therein, so as to the pathogen in sludge is killed, are carried out harmless treatment by burning.
The exhanst gas outlet 42-8-1 of sludge incineration device 4 is by air inlet pipeline 100 and the first air inlet of drying unit 3 The closed connections of 31-3, Drying Bed air inlet 32-4-1 are connected by corresponding pipeline sealing with the first air inlet 31-3 of drying baker 31 It is logical, so as to the flue gas that the burning of sludge incineration device 4 is produced is initially entered in 32 inner chamber of Drying Bed.
In the present embodiment, the base air inlet 42-2-3 of the incinerator 42 of sludge incineration device 4 passes through pipeline and drying unit The exhanst gas outlet of 3 heat exchanger 35 is connected, so as to the partial fume for being mixed with air that drying unit 3 flows out enters incinerator Burn in 42, the Organic substance in combustion process in flue gas is removed.
See Fig. 2, smoke eliminator 5 includes the first cleaner unit 51, the second cleaner unit 52, drying tower 53, corona-type dedusting Odor removal 54 and chimney 55.The upper end gas approach of the first cleaner unit 51 is connected with the exhanst gas outlet of heat exchanger 35, the The lower end exhanst gas outlet of one cleaner unit 51 is connected with the upper end gas approach of the second cleaner unit 52, the lower end of the second cleaner unit 52 Exhanst gas outlet is connected with the lower end air inlet of drying tower 53, gas outlet and the corona-type dedusting odor removal of 53 upper end of drying tower 54 inlet end is connected, and the outlet side of corona-type dedusting odor removal 54 is connected with the lower end air inlet of chimney 55.
First cleaner unit 51, the second cleaner unit 52 are cyclone dust extractor, for removing the granule in flue gas.It is described dry It is bottom-up in dry tower 53 to place some interlayers, desiccant is placed on every layer of interlayer, for removing the steam in flue gas.The electricity Halo dedusting odor removal 54 is 202511399 U of Chinese patent literature CN(Application number 201220103060.2)It is disclosed High voltagehigh frequency dust cleaning and sterilizing apparatus, the ozone produced during the device real work can aoxidize the foul smell in flue gas so that foul smell drops Solution.The lower end of the chimney 55 arranges the lower end of water shower device, i.e. chimney 55 and arranges spray head, gas in chimney 55 from it is lower to Water pouring is first passed around during upper motion, after further removing the granule in gas, then from the outlet drain of chimney 55.
See Fig. 1, feeder 6 includes air accumulator 61, air compressor 62 and steam line 63.The air inlet of air accumulator 61 It is connected with the gas outlet of air compressor 62, the gas outlet of air accumulator 61 is by each steam line 63 and sludge high-pressure injection apparatus 2 are connected with the playpipe 41-4 of incinerator 4.
Spray of the gas outlet of air accumulator 61 by the first steam line 63-1 and the second steam line 63-2 and incinerator 4 The gas-tpe fitting 41-4-1 for penetrating pipe 41-4 is connected.
The gas outlet of air accumulator 61 passes through the first steam line 63-1, the 3rd steam line 63-3 and the 4th steam line 63-4 is connected with the cold air import of heat exchanger 35, and the heat outlet of heat exchanger 35 is by the 6th steam line 63-6 and dirt The air inlet 21-1-5 of the shower nozzle holder assembly 21 of mud high-pressure injection device 2 is connected.
The gas outlet of air accumulator 61 passes through the first steam line 63-1, the 3rd steam line 63-3 and the 5th steam line 63-5 is connected with the cylinder air inlet of the cleaning assemblies 23 of sludge high-pressure injection apparatus 2.
(Embodiment 2, sludge anhydration burning method)
The sludge anhydration burning method of the present embodiment uses the sludge drying and incineration system described in embodiment 1, including following Step:
1. the sludge that the moisture content that municipal sewage plant produces is 75%~85% be conveyed into the tank body of wet mud storage tank 1 In 11, open stirring motor 12 and wet mud is stirred, then open sludge pump 13 and wet mud is sent into by tank body 11 In sludge high-pressure injection apparatus 2.
Wet mud enters mud chamber 21-1a from the mud inlet 21-1-3 of the cylinder body 21-1 of shower nozzle holder assembly 21, subsequently into The sludge passage 22-1 of shower nozzle 22, opens air compressor, is passed through high-pressure hot air to the air inlet 21-1-5 of cylinder body 21-1, this When the negative pressure that produces take the wet mud in sludge passage 22-1 out of shower nozzle 22 in the drying baker 31 of drying unit 3, wet dirt Mud is dispersed as vaporific into the moment of drying baker 31, and the particle diameter of wet mud granule is 80 mesh~120 mesh.
The high-pressure hot air be the high pressure cold air flowed out from air accumulator through heat exchanger 35, and from drying baker 31 What the flue gas of outflow was obtained after carrying out heat exchange.
2. the flue gas that temperature is 100 DEG C~120 DEG C is filled with the drying baker 31 of drying unit 3, vaporific sludge is declining During moisture content therein quickly become water vapour, water vapour is blended in flue gas, wait subsequent treatment.Described 100 DEG C~120 DEG C flue gas be then to flow into the flue gas in drying baker after the high-temperature flue gas drying bed that flows out from incinerator is utilized.
Sludge is finally scattered on the steel band 32-3 of Drying Bed 32 under gravity, and the temperature of steel band is 300 DEG C~310 DEG C, the moisture content in sludge is rapidly evaporated, and sludge is then attached on steel band 32-3, rotates clockwise with steel band 32-3, is rotating During keep relevant temperature to be further dried, when sludge is moved at scraper plate 32-6, by scraper plate 32-6 from steel band 32- Peel off on 3 and fall in the discharge bucket 31-2 of drying baker 31, the moisture percentage in sewage sludge in discharge bucket 31-2 is 4.5%~8%.
The steel band is by the flue gas flowed out in incinerator.
3. the defeated mud device 40 of sludge incineration device 4 is delivered to the dewatered sludge in discharge bucket 31-2 in pay-off 41, Dewatered sludge is sprayed from playpipe 41-4 after being broken into powder, is burnt in the inner core 42-6 of incinerator 42.Inner core 42-6 Initially heated by the electric furnace silk of zone of heating 42-5, and the temperature for inner core 42-6 being controlled by automatic temperature-adjusting control system is 800 DEG C~850 DEG C, sludge rear moment burning in inner core 42-6 of powder produces amount of heat, now during sludge incineration The power of electric furnace silk is reduced by automatic control system, the temperature for maintaining inner core 42-6 is 800 DEG C~850 DEG C.
From having sludge to start burning in incinerator 42, due to the amount of heat that sludge incineration is produced, it is gradually lowered electricity and adds The power of hot stove silk is maintaining the temperature in incinerator 42.If temperature rises always and is close to 850 DEG C in incinerator, there is breakthrough 850 DEG C trend, then reduce sludge inlet or increase air inflow decline in-furnace temperature;If temperature declines always in incinerator 800 DEG C are close to, have the trend for breaking through 800 DEG C, then the power for increasing sludge inlet or increasing electric furnace silk carries out electric power Compensation.
The flue gas produced after sludge incineration is flowed out from exhanst gas outlet 42-8-1, enters drying unit 3 through air inlet pipeline 100 32 inner chamber of Drying Bed, the heat of flue gas makes steel band 32-3 be warmed up to 300 DEG C or so, and is less than 310 degrees Celsius, the heat of flue gas After amount drying bed 32 is utilized, flue gas is introduced into from Drying Bed 32 and is full of in drying baker 31, flue gas by the first air-introduced machine 34-1 Contact with vaporific sludge, part moisture content therein is made which spin off from sludge by flue gas vaporization.Flue gas in drying baker with After vaporific sludge heat exchange, the second air-introduced machine 34-2 and the 3rd air-introduced machine 34-3 is opened, flue gas is from the second gas outlet 31-6 and the Three gas outlet 31-7 flow out, and the first via exits into smoke eliminator 5 from the right-hand member exhanst gas outlet of the second pipeline 34-5 and carries out Purification, in the 3rd air-introduced machine 34-3 suction heat exchanger 35 of secondary route, the gas after heat exchange enters dirty by pipeline Burned in mud incinerator 4.
Sludge ash after burning is from falling on the first dust block board 42-2-a or the second dust block board 42-2-b, due to being provided with two Block dust block board, therefore take away one of, sludge ash can still fall on another piece of dust block board, and deashing process is without interrupting burning Process.
4. the flue gas of smoke eliminator 5 is entered after the first cleaner unit 51,52 dedusting of the second cleaner unit, into drying It is dried in tower 53, then flows into the foul smell that corona-type dedusting odor removal 54 is removed in gas, finally in the bottom water of chimney 55 Discharge from chimney after pouring.
The device of embodiment 1 is designed to 50 tons to 100 tons for the treatment of capacity, according to GB/T24602-2009 and GB18485- 2014 standards to detecting from chimney expellant gas, the following Tables 1 and 2 of testing result:
1 exhaust emission of table controls standard and the present embodiment testing result
2 bioxin Environmental capacity standard of table and the present embodiment testing result
According to GB5085.3-2007 and GB18485-2001《Consumer waste incineration Environmental capacity standard》To keeping off after burning Sludge ash on hawk detected, testing result such as table 3 below:
3 residue Environmental capacity standard of table and the present embodiment testing result

Claims (10)

1. a kind of sludge drying and incineration system, it is characterised in that:Including wet mud storage tank(1), sludge high-pressure injection apparatus(2)、 Drying unit(3), incinerator(4), smoke eliminator(5)And feeder(6);
Wet mud storage tank(1)Including tank body(11)With sludge charging line(14), sludge charging line(14)Mud outlet end with it is dirty Mud high-pressure injection device(2)Mud inlet be connected;
Sludge high-pressure injection apparatus(2)It is fixed on drying unit(3)Drying baker(31)A framed side wallboard on, including shower nozzle Holder assembly(21)And shower nozzle(22), shower nozzle holder assembly(21)It is provided with mud inlet(21-1-3)And air inlet(21-1-5);Sludge is high Pressure injection apparatus(2)Shower nozzle(22)Spray mud mouth and drying baker(31)Sludge import be connected, shower nozzle(22)Dirt is provided with inside Mud passage(22-1);
Drying unit(3)Including drying baker(31), Drying Bed(32), driving means(33), blower unit(34)And heat exchanger (35), Drying Bed(32)It is arranged on drying baker(31)Inside, driving means(33)With Drying Bed(32)Driven roller connection;
Drying baker(31)It is provided with the first air inlet(31-3), the first gas outlet(31-4), the second air inlet(31-5), the second outlet Mouthful(31-6)With the 3rd gas outlet(31-7);
Drying baker(31)The first air inlet(31-3)By air inlet pipeline(100)It is connected with corresponding air intake apparatus, by air inlet The flue gas with heat that equipment is produced after providing hot-air or sludge incineration, the first air inlet(31-3)By corresponding pipeline with Drying Bed(32)The closed connection of gas approach, drying baker(31)The first gas outlet(31-4)By corresponding pipeline and drying Bed(32)The closed connection of exhanst gas outlet;
Second air inlet(31-5), the second gas outlet(31-6)With the 3rd gas outlet(31-7)With drying baker(31)Inner space, First gas outlet(31-4)By corresponding first pipeline(34-4)With the second air inlet(31-5)In drying baker(31)Outside Closed connection, the first air-introduced machine(34-1)It is arranged on the first pipeline(34-4)On;Second gas outlet(31-6)By corresponding Two pipelines(34-5)With the 3rd gas outlet(31-7)It is connected;Second air-introduced machine(34-2)It is arranged on the second pipeline(34-5)The right side End, for by drying baker(31)In flue gas release;Second air-introduced machine(34-2)Outlet filled by pipeline and gas cleaning Put(5)The closed connection of air inlet;3rd air-introduced machine(34-3)It is arranged on the left end of the second pipeline (34-5), the 3rd air-introduced machine (34-3)Gas outlet pass through corresponding pipeline and heat exchanger(35)Gas approach be connected;
Incinerator(4)Including defeated mud device(40), pay-off(41), incinerator(42)And temperature sensor(43), defeated mud Device(40)Mud inlet end and drying unit(3)Discharging opening sealing connection, defeated mud device(40)Mud outlet end and pay-off (41)Charging aperture sealing connection, pay-off(41)Discharging opening and incinerator(42)Charging aperture sealing connection;
Feeder(6)Gas outlet pass through each steam line(63)With sludge high-pressure injection apparatus(2)And incinerator(4)'s Pay-off(41)It is connected.
2. sludge drying and incineration system according to claim 1, it is characterised in that:Sludge high-pressure injection apparatus(2)Spray Head(22)The sludge passage positioned at mud extraction section(22-1)A diameter of 12 millimeters to 20 millimeters;
Drying baker(31)The first air inlet(31-3)By air inlet pipeline(100)With incinerator(4)Incinerator(42)'s Exhanst gas outlet is connected.
3. sludge drying and incineration system according to claim 2, it is characterised in that:Feeder(6)Including air accumulator (61), air compressor(62)And steam line(63), air accumulator(61)Gas outlet pass through the first steam line(63-1), Three steam lines(63-3)With the 4th steam line(63-4)With heat exchanger(35)Cold air import be connected, heat exchanger (35)Heat outlet pass through the 6th steam line(63-6)With sludge high-pressure injection apparatus(2)Shower nozzle holder assembly(21)Enter QI KOU(21-1-5)It is connected.
4. sludge drying and incineration system according to claim 2, it is characterised in that:Heat exchanger(35)Exhanst gas outlet with Sludge incineration device(4)Incinerator(42)Air inlet be connected.
5. sludge drying and incineration system according to claim 1, it is characterised in that:Wet mud storage tank(1)Also include stirring Motor(12), stirrer paddle and sludge return pipe(15), stirring motor(12)It is arranged on tank body(11)Bottom outside, stirring Motor(12)Motor shaft bottom-up stretch into tank body(11)Inner chamber, motor shaft and tank body(11)Internal stirrer paddle connects Connect;Sludge return pipe(15)Mud inlet end mouth and sludge injection apparatus(2)Mud return mouth be connected, sludge return pipe(15) Mud extraction port and tank body(11)Side wall on return mud entrance be connected.
6. sludge drying and incineration system according to claim 1, it is characterised in that:Smoke eliminator(5)Including first Cleaner unit(51), the second cleaner unit(52), drying tower(53), corona-type dedusting odor removal(54)And chimney(55);First removes Dirt device(51)Upper end gas approach and heat exchanger(35)Exhanst gas outlet be connected, the first cleaner unit(51)Lower end flue gas Outlet and the second cleaner unit(52)Upper end gas approach be connected, the second cleaner unit(52)Lower end exhanst gas outlet and drying tower (53)Lower end air inlet be connected, drying tower(53)The gas outlet of upper end and corona-type dedusting odor removal(54)Inlet end It is connected, corona-type dedusting odor removal(54)Outlet side and chimney(55)Lower end air inlet be connected;
First cleaner unit(51), the second cleaner unit(52)For cyclone dust extractor, for removing the granule in flue gas;It is described dry Dry tower(53)In it is bottom-up place some interlayers, place desiccant on every layer of interlayer, for removing the steam in flue gas;It is described Corona-type dedusting odor removal(54)For removing the granule in flue gas and foul smell;The chimney(55)Lower end arrange water drench dress Put.
7. a kind of method of sludge drying and incineration system anhydration and incineration sludge as claimed in claim 1, it is characterised in that include Following steps:
1. the wet mud that the moisture content that municipal sewage plant produces is 75%~85% is conveyed into into wet mud storage tank(1)Tank body (11)In, open sludge pump(13)By wet mud by tank body(11)Middle feeding sludge high-pressure injection apparatus(2)In;Open air pressure Contracting machine and air accumulator, to sludge high-pressure injection apparatus(2)Air inlet(21-1-5)High-pressure hot air is passed through, what is now produced is negative Pressure takes wet mud out of shower nozzle(22)Into drying unit(3)Drying baker(31)In, wet mud enters drying baker(31)Wink Between be dispersed as it is vaporific;
2. drying unit(3)Drying baker(31)In be filled with the flue gas that temperature is 100 DEG C~120 DEG C, vaporific sludge is declining During with flue gas heat exchange;Sludge is finally scattered in Drying Bed under gravity(32)On, Drying Bed(32)The temperature on surface Spend for 300 DEG C~310 DEG C, the moisture content in sludge evaporates rapidly, and sludge is attached to Drying Bed(32)On surface, with Drying Bed(32) Surface is moved, and is further dried in moving process, and sludge is finally by scraper plate from Drying Bed(32)Peel off on surface and fall into baking Dry case(31)Discharge bucket in;
3. sludge incineration device(4)Defeated mud device(40)Dewatered sludge in discharge bucket is delivered to into pay-off(41)In, do Sludge enters incinerator after being broken into powder(42)Middle burning;The flue gas produced after sludge incineration is from exhanst gas outlet stream Go out, through air inlet pipeline(100)Into drying unit(3)Drying Bed(32)Inner chamber;
4. the high-temperature flue gas produced after burning are introduced into Drying Bed(32)Inner chamber, from Drying Bed(32)Inner chamber enters back into baking after flowing out Dry case(31)Inner chamber, flue gas are completed after heat exchange from drying baker with wet mud(31)Inner chamber flows out, and part of smoke enters flue gas Purifier(5), flue gas is through the first cleaner unit(51), the second cleaner unit(52)After dedusting, into drying tower(53)Middle drying, Then flow into corona-type dedusting odor removal(54)The foul smell in gas is removed, finally in chimney(55)Bottom water drench after from cigarette Chimney is discharged, from drying baker(31)Another part flue gas that inner chamber flows out is through heat exchanger(35)Incinerator is entered afterwards(42)Middle combustion Burn.
8. the method for anhydration and incineration sludge according to claim 7, it is characterised in that:Step high-pressure hot air 1. used Be from air accumulator flow out high pressure cold air through heat exchanger(35), and from drying baker(31)The flue gas of middle outflow carries out heat Obtain after exchange;Sludge is from sludge high-pressure injection apparatus(2)Flow velocity during middle ejection is 1m/s to 3m/s.
9. the method for anhydration and incineration sludge according to claim 7, it is characterised in that:Incinerator(42)The interior temperature that controls is 800 DEG C~850 DEG C.
10. the method for anhydration and incineration sludge according to claim 7, it is characterised in that:2. step is dried after terminating, drying Case(31)Discharge bucket in sludge moisture content be 5%~10%.
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CN105180176A (en) * 2015-09-30 2015-12-23 上海市城市建设设计研究总院 Dried sludge conveying system with wind distribution branch and treatment method
CN105114963A (en) * 2015-09-30 2015-12-02 上海市城市建设设计研究总院 Conveying system for dried sludge
CN105157042A (en) * 2015-09-30 2015-12-16 上海市城市建设设计研究总院 Conveying system and processing method for powder granule sludge
CN108167834B (en) * 2017-11-23 2019-05-31 江苏海建股份有限公司 Drying type burning facility in a kind of environment-friendly type
CN109458620A (en) * 2018-11-16 2019-03-12 沈阳航空航天大学 Reduce the compound additive and its application method of sludge incineration fine particle production quantity

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