CN104891769A - Sludge drying incineration system and method - Google Patents
Sludge drying incineration system and method Download PDFInfo
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- CN104891769A CN104891769A CN201510306826.5A CN201510306826A CN104891769A CN 104891769 A CN104891769 A CN 104891769A CN 201510306826 A CN201510306826 A CN 201510306826A CN 104891769 A CN104891769 A CN 104891769A
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Abstract
The invention discloses a sludge drying incineration system and method. The sludge drying incineration system comprises a wet sludge storage tank, a sludge high-pressure injection device, a drying box, an incinerator, a fume cleaning device and a gas feeder, wherein a sludge outlet end of a sludge feed pipeline of the wet sludge storage tank is communicated with a sludge inlet of the sludge high-pressure injection device; a sludge spraying port of a sprayer of the sludge high-pressure injection device is communicated with a sludge inlet of the drying box; a first fume outlet of the drying device is communicated with a gas inlet of the incinerator; a second fume outlet of the drying device is communicated with the fume cleaning device; and a fume outlet of the incinerator is communicated with the drying device. The sludge drying incineration system utilizes heat carried by high-temperature fume generated by sludge incineration to dry the wet sludge, and completely utilizes the heat generated by sludge incineration in the drying stage without any other energy.
Description
Technical field
The present invention relates to sludge disposal technology, be specifically related to a kind of sludge drying and incineration system and method.
Background technology
In recent years, under national energy-saving reduction of discharging and pro-active fiscal policy effect, urban wastewater treatment is developed rapidly, and Urban Water environmental improvement obtains remarkable effect.The disposal but a large amount of mud that urban wastewater treatment process produces also generally are not effectively addressed.These mud contain the hazardous and noxious substances such as pathogenic agent, heavy metal and persistent organism, without the words of effectively process, very easily secondary pollution is caused to underground water, soil etc., direct threatening environment safety and public health, the environmental benefit of sewage treatment facility is reduced greatly, affects the positively effect that national energy-saving reduces discharging strategy implementation simultaneously.Sludge incineration is a kind of minimizing, stabilization, innoxious treatment process, and moisture in mud and organic matter can be removed by this method completely, and kill pathogenic agent.
Such as Chinese patent literature CN 1270988 C(application number 200510038416.3) disclose a kind of sludge incineration processing method and Disposal System of Mud Burning, the method be by water ratio be 75% ~ 85% dewatered sludge be delivered in the combustion chamber of circulating fluidized bed, the dusty gas produced in storage by dewatered sludge is sent in the combustion chamber of circulating fluidized bed, dewatered sludge, dusty gas burn together with coal, burn the tail gas produced and discharge after treatment.This method needs a large amount of coal when burning sludge, and the weight ratio of dewatered sludge and coal is 20 ~ 30: 70 ~ 80, and namely burn the coal that one ton of mud needs to consume about 3.5 ~ 4 tons, coal, sludge incineration cost is very high, and economic feasibility is poor.
Chinese patent literature CN 100351188C(application number 200510111467.4) disclose a kind of sludge drying and burning process and system and device thereof, be applicable to the process of municipal sewage plant's active sludge, dewatered sludge technical process is passed through successively with lower device: wet sludge storage bin, weighing hopper, sludge mixer, sludge drier, granular separator, water cooler, mummification product bunker, incinerator, smoke eliminator, described incinerator adopts bubbling fluidized bed incinerator, incinerator afterbody is furnished with economizer, air preheater, burn the high-temperature flue gas produced to be used for respectively heating thermal oil and freezing air, not Jia Re after thermal oil deliver to sludge drier dry wet mud by recycle pump.It is the thermal oil of heat that this sludge drying system is used for the energy of dry wet mud, and namely high-temperature flue gas first transfers heat to thermal oil, and the thermal oil of heat carrys out sludge-drying again.
About the drying means of mud, Chinese patent literature CN 103043879 A(application number 201210559711.3) disclose a kind of Apparatus and method for utilizing flue gas drying mud, comprise drying tower, smoke inlet, sludge storage bin, screw feeder, atomization air flow entrance, airflow atomizing device, exhanst gas outlet, ash bucket and spiral discharge device, described drying tower is a cylindrical structure erect, the bottom of described drying tower is provided with smoke inlet, the top of drying tower is provided with airflow atomizing device, airflow atomizing device is connected with screw feeder and atomization air flow entrance simultaneously, screw feeder is provided with sludge storage bin, the top of described drying tower is provided with exhanst gas outlet, the bottom of drying tower is provided with ash bucket, ash bucket is connected with spiral discharge device.Time dry, first flue gas enters from the smoke inlet of drying tower bottom, flows from bottom to top in tower; Secondly, need dry wet mud from sludge storage bin by screw feeder, and be pooled to airflow atomizing device with atomization air flow, thus form very little mud drop; Next, sludge liquid after atomization drops in dry tower top and sprays downwards, fall in tower under gravity, mud drop and flue gas form adverse current, and heat and mass is carried out with smoke contacts in dropping process, make it to be able to drying, dried mud converges in the bottom ash bucket of tower, discharges outside tower by worm conveyor; Finally, complete dry flue gas drying top of tower exhanst gas outlet to discharge.
Summary of the invention
Technical problem to be solved by this invention is to provide the sludge drying and incineration system and method that a kind of energy utilization rate is high, processing cost is low.
The technical scheme realizing the object of the invention is a kind of sludge drying and incineration system, comprises wet mud storage tank, sludge high-pressure jet apparatus, drying unit, incinerator, smoke eliminator and air feeder.
Wet mud storage tank comprises tank body and mud charging line, and the mud outlet end of mud charging line is connected with the mud inlet of sludge high-pressure jet apparatus.
Sludge high-pressure jet apparatus is fixed on a framed side wallboard of the drying baker of drying unit, comprises nozzle boss assembly and shower nozzle, and nozzle boss assembly is provided with mud inlet and inlet mouth; The spray mud mouth of the shower nozzle of sludge high-pressure jet apparatus is connected with the mud import of drying baker, is provided with mud passage in shower nozzle.
Drying unit comprises drying baker, Drying Bed, drive unit, blower unit and heat exchanger, and Drying Bed is arranged on drying baker inside, and drive unit is connected with the driving roll of Drying Bed.
Drying baker is provided with the first inlet mouth, the first air outlet, the second inlet mouth, the second air outlet and the 3rd air outlet.
First inlet mouth of drying baker is connected with corresponding air inletting device by admission passage, the flue gas of the band heat produced after providing warm air or sludge incineration by air inletting device, first inlet mouth is communicated with the gas approach of Drying Bed is airtight by corresponding pipeline, and the first air outlet of drying baker is communicated with the exhanst gas outlet of Drying Bed is airtight by corresponding pipeline.
Second inlet mouth, the second air outlet and the 3rd air outlet and drying baker inner space, the first air outlet is communicated with the Exterior capsule of the second inlet mouth at drying baker by corresponding first pipeline, and the first induced draft fan is arranged on the first pipeline; Second air outlet is connected with the 3rd air outlet by corresponding second pipeline; Second induced draft fan is arranged on the right-hand member of the second pipeline, for being released by the flue gas in drying baker; The outlet of the second induced draft fan is communicated with the inlet mouth of smoke eliminator is airtight by pipeline; 3rd induced draft fan is arranged on the left end of the second pipeline, and the air outlet of the 3rd induced draft fan is connected with the gas approach of heat exchanger by corresponding pipeline.
Incinerator comprises defeated mud device, pay-off, incinerator and temperature sensor, the mud inlet end of defeated mud device seals with the discharge port of drying unit and is communicated with, the mud outlet end of defeated mud device seals with the opening for feed of pay-off and is communicated with, and the discharge port of pay-off seals with the opening for feed of incinerator and is communicated with.
The air outlet of air feeder is connected with the pay-off of incinerator with sludge high-pressure jet apparatus by each steam line.
The diameter being positioned at the mud passage of mud extraction section of the shower nozzle of described sludge high-pressure jet apparatus is 12 millimeters to 20 millimeters; First inlet mouth of drying baker is connected by the exhanst gas outlet of admission passage with the incinerator of incinerator.
Described air feeder comprises gas-holder, air compressor and steam line, the air outlet of gas-holder is connected with the cold air import of heat exchanger with the 4th steam line by the first steam line, the 3rd steam line, and the heat outlet of heat exchanger is connected by the inlet mouth of the 6th steam line with the nozzle boss assembly of sludge high-pressure jet apparatus.
The exhanst gas outlet of described heat exchanger is connected with the inlet mouth of the incinerator of sludge incineration device.
Described wet mud storage tank also comprises agitator motor, agitating vane and sludge return pipe, and agitator motor is arranged on the bottom outside of tank body, the bottom-up inner chamber stretching into tank body of the motor shaft of agitator motor, and motor shaft is connected with the agitating vane of tank interior; The mud inlet end mouth of sludge return pipe is connected with the mud return mouth of mud jet apparatus, and the mud extraction port of sludge return pipe is connected with the mud entrance that returns on the sidewall of tank body.
Described smoke eliminator comprises the first fly-ash separator, the second fly-ash separator, drying tower, corona-type dedusting odor removal and chimney; The upper end gas approach of the first fly-ash separator is connected with the exhanst gas outlet of heat exchanger, the lower end exhanst gas outlet of the first fly-ash separator is connected with the upper end gas approach of the second fly-ash separator, the lower end exhanst gas outlet of the second fly-ash separator is connected with the lower end inlet mouth of drying tower, the air outlet of drying tower upper end is connected with the inlet end of corona-type dedusting odor removal, and the outlet side of corona-type dedusting odor removal is connected with the lower end inlet mouth of chimney.
Described first fly-ash separator, the second fly-ash separator are tornado dust collector, for removing the particle in flue gas; In described drying tower, the some interlayers of bottom-up placement, every layer of interlayer places siccative, for removing the steam in flue gas; Described corona-type dedusting odor removal is for removing particle in flue gas and foul smell; The lower end of described chimney arranges water shower device.
A method for sludge drying and incineration system anhydration and incineration mud as above, comprises the following steps:
1. the wet mud being 75% ~ 85% by the water ratio that municipal sewage plant produces is conveyed in the tank body of wet mud storage tank, opens sludge pump by wet mud by sending in sludge high-pressure jet apparatus in tank body; Open air compressor and gas-holder, the inlet mouth to sludge high-pressure jet apparatus passes into high-pressure hot air, and the negative pressure now produced is taken wet mud out of shower nozzle and entered in the loft drier of drying unit, and the moment that wet mud enters loft drier is dispersed as vaporific.
Be filled with the flue gas that temperature is 100 DEG C ~ 120 DEG C in the loft drier of 2. drying unit, vaporific mud in decline process with flue gas heat exchange; Mud is finally scattered on Drying Bed under gravity, the temperature on Drying Bed surface is 300 DEG C ~ 310 DEG C, moisture content in mud evaporates rapidly and enters in loft drier, mud is attached to Drying Bed on the surface, mobile with Drying Bed surface, dry further in moving process, mud is finally peeled off on the surface from Drying Bed by scraper plate and falls into the discharge bucket of drying baker.
3. the dewatered sludge in discharge bucket is delivered in pay-off by the defeated mud device of sludge incineration device, dewatered sludge be broken into Powdered after enter the middle burning of incinerator; The flue gas produced after sludge incineration flows out from exhanst gas outlet, enters the Drying Bed inner chamber of drying unit through admission passage.
4. the high-temperature flue gas produced after burning is introduced into Drying Bed inner chamber, loft drier inner chamber is entered again after Drying Bed inner chamber flows out, the part of smoke flowed out from loft drier inner chamber enters smoke eliminator, flue gas is after the first fly-ash separator, the second fly-ash separator dedusting, enter in drying tower dry, then the foul smell in corona-type dedusting odor removal removal gas is flowed into, finally discharge from chimney after the bottom water of chimney drenches, another part flue gas flowed out from loft drier inner chamber through over-heat-exchanger laggard enter incinerator.
Above-mentioned steps high-pressure hot air 1. used be the high pressure freezing air that flows out from gas-holder through over-heat-exchanger, obtain after carrying out thermal exchange with the flue gas flowed out from loft drier.Flow velocity when mud sprays from sludge high-pressure jet apparatus is 1m/s to 3m/s.
In above-mentioned incinerator, control temperature is 800 DEG C ~ 850 DEG C.
After 2. above-mentioned steps is dried and terminated, in the discharge bucket of drying baker, the water ratio of mud is 5% ~ 10%.
The present invention has positive effect: (1) sludge drying and incineration system of the present invention utilizes the heat entrained by high-temperature flue gas produced during sludge incineration to carry out drying to wet mud, the heat that the drying sludge stage utilizes sludge incineration to produce completely, does not need to use other thermals source.
Drying and incineration system of the present invention is when wet mud water ratio being about to 80% carries out drying, first the mud that will wet is sent in jet apparatus, mud enters the loft drier of drying installation with vaporific after nozzle ejection, the mud of atomizing state contacts with the high-temperature flue gas be full of in loft drier in decline process, carry out the drying of first stage, because mud is vaporific, fully can contact with high-temperature flue gas.Vaporific mud is finally scattered in one end of the steel strip surface of the drying bed in drying installation under gravity, the temperature of steel strip surface is heated to about 300 DEG C by the high-temperature flue gas after burning, after mud granule contacts with steel band, moisture in mud evaporates rapidly, simultaneously mud moves toward discharge port direction along with steel band, through the drying of subordinate phase steel band, from loft drier discharge moisture percentage in sewage sludge drop to 5% ~ 10%, this water ratio be 5% ~ 10% mud be broken into Powdered after in the burner hearth of 800 DEG C ~ 850 DEG C can moment Thorough combustion.
(2) sludge drying and incineration system of the present invention have employed mud jet apparatus, mud jet apparatus uses air-flow to break up mud, the air-flow used is before entering jet apparatus, after flowing out from gas-holder, enter jet apparatus after waste-heat recovery device and the flue gas of discharging from loft drier carry out heat exchange, therefore the air-flow breaing up mud is hot gas flow, and hot gas flow serves the effect of preheating when breaing up mud.Gas-holder effluent air is heated the heat of employing equally from the heat that sludge incineration produces, and does not need to use extra heat.
(3) Drying Bed is provided with in the drying baker of sludge drying device that sludge drying and incineration system of the present invention adopts, the inside of Drying Bed is airtight cavity, the high-temperature flue gas produced after directly passing into sludge incineration in this inner chamber, the temperatures as high of the high-temperature flue gas entered 280 DEG C ~ 320 DEG C, high-temperature flue gas makes temperature of steel strips rise to about 300 DEG C to steel band heating, and steel band carries out drying to the mud be scattered thereon; Enter after the high-temperature flue gas of Drying Bed inner chamber and steel band complete heat exchange, flow out from Drying Bed, be delivered to the box house of drying baker by induced draft fan, now the temperature of flue gas still up to 100 DEG C ~ 120 DEG C, can the vaporific mud that enters from sludge inlet of heat drying; After flue gas in drying baker and vaporific mud complete heat exchange, the flue gas being entrained with water vapor is discharged from drying baker, part enters waste-heat recovery device, heat exchange is carried out with from gas-holder effluent air, gas-holder effluent air can be heated to 90 DEG C ~ 100 DEG C, gas after this heating enters mud jet apparatus, and in the process of breaing up mud, play the effect of preheating mud, another part enters smoke eliminator and does purifying treatment.Therefore drying and incineration system of the present invention is due to the setting of system architecture, greatly improves the utilization ratio of flue gas heat, the heat produced after making full use of sludge incineration, and drying stage does not need external energy, reduces the cost of sludge treatment.
(4) it is 800 DEG C ~ 850 DEG C that the sludge incinerator that sludge drying and incineration system of the present invention adopts maintains in-furnace temperature, and mud is sufficiently burned and sludge incineration can not produce dioxin at such a temperature.
The pay-off of sludge incinerator is provided with shredder assemblies, spray tube is sent into by feeding material component again after being smashed by mud after dehydration and heat drying process, spray tube will be broken into pulverous mud by high-pressure air and spray in incinerator, mud to enter in incinerator moment Thorough combustion, effectively can carry out minimizing and harmless treatment to mud, the residue rate after sludge incineration is 5% to 8% of wet mud total mass.
Incinerator is provided with inner core, and mud is Thorough combustion in inner core, and inner core can protect electrical heater silk, extension device work-ing life.
Incinerator is provided with base, be provided with in the middle part of base and run through its upper and lower sludge ash passage, drawing and pulling type first gear hawk and second gear hawk is provided with from top to bottom successively in sludge ash passage, just deashing operation can be carried out without blowing out, and inner flue gas of the stove does not leak while deashing, avoid contaminate environment and operator is damaged.
Temperature sensor is provided with in sludge incinerator, temperature sensor is for monitoring the temperature in inner core, and give corresponding automatic temp Controlling System by the data feedback of collection, automatic temp Controlling System adopts Industry Control PLC temperature control module to carry out PID minute adjustment, the frequency switching changing output terminal dutycycle is utilized to control the work of electrical heater silk, this controllable way can take into account other factors except electrical heater silk in stove the accurate control realizing temperature, its precision can reach ± and 1 degree Celsius, thus ensure sewage sludge powder under the furnace temperature of 800 degrees Celsius to 850 degrees Celsius moment Thorough combustion, avoid producing dioxin.
(5) when sludge drying and incineration system of the present invention processes the flue gas flowed out from loft drier, flue gas is successively by the first fly-ash separator, the second fly-ash separator, drying tower, corona-type cleaning apparatus and water shower device, last flue gas is discharged from chimney, detects the following: dioxin of expellant gas index, carbon monoxide, oxynitride, sulfurous gas, hydrogenchloride, mercury, cadmium thallium and compound thereof, the plumbous chromium-copper manganese nickel of antimony arsenic and the indices such as compound, particulate matter thereof the prescribed value well below GB18485-2014 " consumer waste incineration Environmental capacity standard ".
Accompanying drawing explanation
Fig. 1 is the perspective view of sludge drying and incineration system of the present invention;
Fig. 2 is the perspective view of sludge drying and incineration system when observing from Fig. 1 rear;
Fig. 3 is the perspective view of the sludge high-pressure jet apparatus of sludge drying and incineration system;
Fig. 4 is the front view of Fig. 3;
Fig. 5 is the A-A sectional view of Fig. 4;
Fig. 6 is the perspective view of the shower nozzle of sludge high-pressure jet apparatus;
Fig. 7 is the connection diagram of sludge high-pressure jet apparatus and each road pipeline;
Fig. 8 is the perspective view of the drying unit of sludge drying and incineration system;
Fig. 9 is the top view of Fig. 8;
Figure 10 is the B-B sectional view of Fig. 9;
Figure 11 is the perspective view of the Drying Bed of drying unit;
Figure 12 is the perspective view of the sludge incineration device of sludge drying and incineration system;
Figure 13 is the top view of Figure 12;
Figure 14 is the C-C sectional view of Figure 13;
Mark in above-mentioned accompanying drawing is as follows:
Wet mud storage tank 1, tank body 11, agitator motor 12, agitating vane, sludge pump 13, mud charging line 14, sludge return pipe 15;
Sludge high-pressure jet apparatus 2, nozzle boss 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, inlet mouth 21-1-5, gland 21-2, shower nozzle 22, mud passage 22-1, enter mud section 22a, enter mud hole 22a-1, sealed separation section 22b, compress conical surface 22b-1, air inlet section 22c, air inlet port 22c-1, seal face 22c-2, mud extraction section 22d, cleaning assemblies 23, double-acting cylinder 23-1, cylinder rod 23-1-1, first inlet mouth 23-1-2, second inlet mouth 23-1-3, cylinder cap 23-1-2, clean seal pad 23-2,
Drying unit 3, drying baker 31, mud import 31-1, discharge bucket 31-2, first inlet mouth 31-3, first air outlet 31-4, second inlet mouth 31-5, second air outlet 31-6, 3rd air outlet 31-7, Drying Bed 32, driving roll 32-1, driven roll 32-2, steel band 32-3, front side board 32-4, Drying Bed inlet mouth 32-4-1, Drying Bed air outlet 32-4-2, back side panel 32-5, scraper plate 32-6, shrouding 32-7, drive unit 33, blower unit 34, first induced draft fan 34-1, second induced draft fan 34-2, 3rd induced draft fan 34-3, first pipeline 34-4, 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, screen drum 41-2-1, sieve aperture 41-2-1-1, mixing component 41-2-2, drive-motor 41-2-3, feeding material component 41-3, screw-blade 41-3-1, second drive-motor 41-3-2, spray tube 41-4, gas fittings 41-4-1, incinerator 42, pedestal 42-1, ash shoot 42-1-1, base 42-2, sludge ash passage 42-2-1, annular steam pipe 42-2-2, air outlet 42-2-2-1, first gear hawk 42-2-a, second gear hawk 42-2-b, base inlet mouth 42-2-3, housing 42-3, thermal insulation layer 42-4, zone of heating 42-5, inner core 42-6, air inlet port 42-6-1, mud 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 fly-ash separator 51, second fly-ash separator 52, drying tower 53, corona-type dedusting odor removal 54, chimney 55;
Air feeder 6, gas-holder 61, air compressor 62, steam line 63, the first steam line 63-1, the second steam line 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;
Admission passage 100.
Embodiment
The description in orientation of the present invention is carried out according to the orientation shown in Fig. 1, and also namely the direction up and down shown in Fig. 1 is the direction up and down of description, and a side of court of Fig. 1 institute is front, and the side deviating from Fig. 1 is rear.
(embodiment 1, sludge drying and incineration system)
See Fig. 1, the sludge drying and incineration system of the present embodiment comprises wet mud storage tank 1, sludge high-pressure jet apparatus 2, drying unit 3, incinerator 4, smoke eliminator 5 and air feeder 6.
Wet mud storage tank 1 comprises tank body 11, agitator motor 12, agitating vane, sludge pump 13, mud charging line 14 and sludge return pipe 15.Agitator motor 12 is arranged on the bottom outside of tank body 11, the bottom-up inner chamber stretching into tank body 11 of the motor shaft of agitator motor 12, and motor shaft is connected with the agitating vane of tank body 11 inside, drives agitating vane to rotate.Sludge pump 13 is arranged on the bottom outside of tank body 11, and the mud inlet of sludge pump 13 is connected with the mud mouth bottom tank body 11, and the mud mouth of sludge pump 13 is connected with the mud inlet end of mud charging line 14.The mud outlet end of mud charging line 14 is connected with the mud inlet of sludge high-pressure jet apparatus 2.The mud inlet end mouth of sludge return pipe 15 is connected with the mud return mouth of mud jet apparatus 2, and the mud extraction port of sludge return pipe 15 is connected with the mud entrance that returns on the sidewall of tank body 11.
Sludge high-pressure jet apparatus 2 is fixed on (being left wallboard in Fig. 1) on a framed side wallboard of the drying baker 31 of drying unit 3, and the spray mud mouth of the shower nozzle 22 of sludge high-pressure jet apparatus 2 is connected with the mud import 31-1 of drying baker 31.
See Fig. 3 to Fig. 7, sludge high-pressure jet apparatus 2 comprises nozzle boss assembly 21, shower nozzle 22 and cleaning assemblies 23.
See Fig. 5, cleaning assemblies 23 comprises double-acting cylinder 23-1 and clean seal pad 23-2.In the right end of the airtight cylinder rod 23-1-1 being fixedly installed on double-acting cylinder 23-1 of clean seal pad 23-2.The right-hand member of double-acting cylinder 23-1 and left end are respectively equipped with the first inlet mouth 23-1-2 and the second inlet mouth 23-1-3, and the first inlet mouth 23-1-2 is arranged near clean seal pad 23-2, is positioned at the right side of cylinder 23-1; Second inlet mouth 23-1-3 is positioned at the left side (air outlet of cylinder not shown in FIG.) of cylinder 23-1.
Nozzle boss assembly 21 comprises cylinder body 21-1 and gland 21-2.Gland 21-2 screws on the airtight right-hand member being fixed on cylinder body 21-1.Gland 21-2 central authorities are provided with the center through hole run through about it.On the left end of double-acting cylinder 23-1 by the airtight cylinder body 21-1 being fixed on nozzle boss assembly 21 of the cylinder cap 23-1-2 of the side at its cylinder rod 23-1-1 place.The right side central of the cylinder cap 23-1-2 of double-acting cylinder 23-1 is provided with the shower nozzle open holes coaxial with cylinder rod 23-1-1.Be provided with dividing plate 21-1-1 in the middle part of cylinder body 21-1, cylinder body 21-1 inner chamber is divided into the mud chamber 21-1a be positioned on the left of dividing plate 21-1-1 and the air chamber 21-1b be positioned on the right side of dividing plate 21-1-1 by dividing plate 21-1-1.Be provided with the through hole run through about it in the middle part of dividing plate 21-1-1, through hole is coaxially airtight is connected with nozzle set 21-1-2.The guiding conical surface is provided with inside the right-hand member of nozzle set 21-1-2.On rear side of cylinder body 21-1, left part is provided with the mud inlet 21-1-3 communicated with mud chamber 21-1a.Be provided with the mud return mouth 21-1-4 communicated with mud chamber 21-1a on rear side of cylinder body 21-1, mud return mouth 21-1-4 is positioned at the right side of mud inlet 21-1-3, and mud return mouth 21-1-4 is away from cleaning assemblies 23.Be provided with the inlet mouth 21-1-5 communicated with air chamber 21-1b on front side of cylinder body 21-1, inlet mouth 21-1-5 is 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 nozzle boss assembly 21 is connected with the mud outlet end of the mud charging line 14 of wet mud storage tank 1, 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.The first inlet mouth 23-1-2 of the double-acting cylinder 23-1 of cleaning assemblies 23 is connected with air feeder 6 with valve respectively by pipeline with the second inlet mouth 23-1-3.
See Fig. 5 and Fig. 6, shower nozzle 22 is steel integral piece.Shower nozzle 22 is divided into from left to right successively into mud section 22a, sealed separation section 22b, air inlet section 22c and mud extraction section 22d.Shower nozzle 22 is axially arranged with along it mud passage 22-1 run through about it.The left end entering mud section 22a of shower nozzle 22 inserts in the shower nozzle open holes of the cylinder cap 23-1-2 of double-acting cylinder 23-1 through after nozzle set 21-1-2 and dividing plate 21-1-1 from right to left, coaxial with cylinder rod 23-1-1.Clean seal pad 23-2 is arranged in the mud passage 22-1 of shower nozzle 22, for being released outside shower nozzle 22 by the mud in mud passage 22-1.Enter mud section 22a along its circumference at equal intervals angle be provided with 3 to 5 communicate with mud passage 22-1 enter mud hole 22a-1, the present embodiment is 4.4 are entered mud hole 22a-1 is along left and right to the kidney ellipsoid hole arranged.The compression conical surface 22b-1 corresponding with the guiding conical surface of nozzle set 21-1-2 is provided with on the left of the sealed separation section 22b of shower nozzle 22.The compression conical surface 22b-1 of shower nozzle 22 fits tightly with the guiding conical surface of nozzle set 21-1-2 and forms airtight connection.The air inlet section 22c left part of shower nozzle 22 along its circumference at equal intervals angle be provided with 4 to 8 air inlet port 22c-1, the present embodiment is 6.The angle α of the axis of the axis of each air inlet port 22c-1 and the mud passage 22-1 of shower nozzle 22 is 0 degree to 40 degree, and the present embodiment is 30 degree.The right side of the air inlet section 22c of shower nozzle 22 is provided with seal face 22c-2.The mud extraction section 22d of shower nozzle 22 stretches out to the right outside gland 21-2 from the center through hole of gland 21-2, is positioned at outside cylinder body 21-1.The diameter being positioned at the mud passage 22-1 of mud extraction section 22d is 12 millimeters to 20 millimeters, and the present embodiment is 18 millimeters.Shower nozzle 22 is fixedly installed in cylinder body 21-1 by gland 21-2.The part contacted with the seal face 22c-2 of the air inlet section 22c of shower nozzle 22 of gland 21-2 is airtight to be connected.Mud chamber 21-1-1 is connected by shower nozzle 22 with air chamber 21-1-2.
When sludge high-pressure jet apparatus 2 uses, by sludge pump 13, the pending mud in tank body 11 is squeezed into mud chamber 21-1a by the mud inlet 21-1-3 of nozzle boss assembly 21, mud enters mud passage 22-1 by the mud hole 22a-1 that enters of shower nozzle 22, and move right along mud passage 22-1, flow velocity when mud sprays from mud passage 22-1 is 1m/s to 3m/s, and the present embodiment is 2m/s.By air compressor, high-pressure hot air is sent into air chamber 21-1b by inlet mouth 21-1-5, mud passage 22-1 is entered through the air inlet port 22c-1 of the air inlet section 22c of shower nozzle 22, and spray to the right, the negative pressure now produced is taken the mud in mud passage 22-1 out of shower nozzle 22 and is entered in loft drier 31, mud is dispersed as rapidly vaporific, the surface-area of vaporific mud improves greatly, and the surface-area moment of mud can increase tens thousand of times, thus greatly can improve heat absorption efficiency.When the mud passage 22-1 of the shower nozzle 22 of sludge high-pressure jet apparatus 2 needs clean, ventilate in the second inlet mouth 23-1-3 of cleaning assemblies 23, under gas pressure, piston moves from left to right, the clean seal pad 23-2 be connected with piston rod is driven to have from left to right to move in mud passage 22-1, mud residual in mud passage 22-1 flows out from mud return mouth 21-1-4, is back in storage tank 11 through sludge return pipe 15.When sludge high-pressure jet apparatus 2 works, ventilate in the first inlet mouth 23-1-2, piston is subject to the pressure from right side, and clean seal pad 23-2 can not enter in mud passage 22-1 and move.
See Fig. 8 to Figure 11, drying unit 3 comprises drying baker 31, Drying Bed 32, drive unit 33, blower unit 34 and heat exchanger 35.
Blower unit 34 comprises the first induced draft fan 34-1, the second induced draft fan 34-2 and the 3rd induced draft fan 34-3.
The left side central portion top of drying baker 31 is provided with mud import 31-1, and mud import 31-1 is connected with the spray mud mouth of the shower nozzle 22 of sludge high-pressure jet apparatus 2.The downside left part of drying baker 31 is provided with discharge bucket 31-2; The first inlet mouth 31-3 is provided with on the downside of the front side right part of drying baker 31; First inlet mouth 31-3 is connected with corresponding air inletting device by admission passage 100, the flue gas of the band heat produced after providing warm air or sludge incineration by air inletting device.The first air outlet 31-4 is provided with on the downside of the front side left part of drying baker 31; The second inlet mouth 31-5 is provided with on the upside of the front side left part of drying baker 31; The upside right part of drying baker 31 is provided with the second air outlet 31-6, and upside left part is provided with the 3rd air outlet 31-7.The right tank wall of drying baker 31 is provided with access door (not drawing in Figure of description).First air outlet 31-4 is communicated with at the Exterior capsule of drying baker 31 with the second inlet mouth 31-5 by corresponding first pipeline 34-4; First induced draft fan 34-1 is arranged on the first pipeline 34-4, is sent in drying baker 31 by the first air outlet 31-4 flue gas out by the first induced draft fan 34-1 through the second inlet mouth 31-5.
See Fig. 1, the second air outlet 31-6 is connected with the 3rd air outlet 31-7 by corresponding second pipeline 34-5; Second induced draft fan 34-2 is arranged on the right-hand member of the second pipeline 34-5, and for being released by the flue gas in drying baker 31, the air outlet of the second induced draft fan 34-2 is communicated with the inlet mouth of smoke eliminator 5 is airtight by pipeline.3rd induced draft fan 34-3 is arranged on the left end of the second pipeline 34-5, and for flue gas is discharged drying baker 31, the air outlet of the 3rd induced draft fan 34-3 is connected by the gas approach of corresponding pipeline with heat exchanger 35, the heat collection of flue gas can be used.
Two-way is divided into from the second air outlet 31-6 and the 3rd air outlet 31-7 effluent air, the first via enters smoke eliminator 5 by the second induced draft fan 34-2 extraction and purifies, in secondary route the 3rd induced draft fan 34-3 suction heat exchanger 35, the gas after heat exchange is entered in sludge incineration device 4 by pipeline and burns.
See Figure 10 and Figure 11, it is inner that Drying Bed 32 is arranged on drying baker 31, comprises driving roll 32-1, driven roll 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 is wedge shape.The right part of front side board 32-4 is provided with Drying Bed inlet mouth 32-4-1, and left part is provided with Drying Bed air outlet 32-4-2.Drying Bed inlet mouth 32-4-1 is communicated with by corresponding pipeline sealing to the first inlet mouth 31-3 of drying baker 31.Drying Bed air outlet 32-5-2 is communicated with by corresponding pipeline sealing to the first air outlet 31-4 of drying baker 31.Be symmetricly set in drying baker 1 before and after front side board 32-4 and back side panel 32-5, and arrange in left low right height.Driving roll 32-1 is arranged between the right-hand member of front side board 32-4 and back side panel 32-5 by corresponding bearing rotation.The roll shaft of driving roll 32-1 stretches out outside drying baker 31 backward, and driving roll 32-1 rotates airtight connection by corresponding bearing with the rear box wall of drying baker 31.Driven roll 32-2 rotation is arranged between the left end of front side board 32-4 and back side panel 32-5.Steel band 32-3 is arranged around driving roll 32-1 and driven roll 32-2, drives it to rotate clockwise by driving roll 32-1.Scraper plate 32-6 is arranged between the left end of front side board 32-4 and back side panel 32-5, for being peeled off attachment on steel band 32-3 by the mud after heat drying.Shrouding 32-7 has 5 pieces, is separately positioned on upper and lower both sides, front side board 32-4 rear portion, back side panel 32-5 is anterior up and down between both sides and the left end of front side board 32-4 and back side panel 32-5; Driving roll 32-1, steel band 32-3, front side board 32-4, between back side panel 32-5 and shrouding 32-7, form substantially airtight cavity.Shrouding 32-7 between front side board 32-4 and the left end of back side panel 32-5 is between the Drying Bed air outlet 32-4-2 of driven roll 32-2 and front side board 32-4.
Drive unit 33 comprises motor 33-1 and reduction box 33-2.The driving roll 32-1 of Drying Bed 32 is driven to rotate by motor 33-1 by reduction box 33-2.
When sludge drying device 3 uses, the flue gas preferably using sludge incineration to produce is dried.First flue gas is sent in the cavity of Drying Bed 32 by the first inlet mouth 31-3 of admission passage 100 drying case 31 by corresponding air inletting device, the heat of flue gas makes steel band 32-3 be warmed up to about 300 DEG C, and be no more than 310 degrees Celsius, complete the flue gas of heat exchange by induced draft fan suction loft drier 31 with steel band, the flue-gas temperature now in loft drier 31 still up to 100 DEG C ~ 120 DEG C.
Wet mud is sprayed into after in drying baker 1 through two stage drying process by the mud import 31-1 of sludge high-pressure jet apparatus 2 drying case 31, first mud is dispersed as vaporific when entering in drying baker 31, enlarge active surface instantaneously, heat exchange is carried out with the flue gas be full of in drying baker 31, now having part moisture content to vaporize enters in flue gas, then vaporific mud is scattered on the steel band 32-3 of Drying Bed 32, because steel band 32-3 has the temperature of about 300 DEG C, therefore when mud drops on after on steel band 32-3, moisture content in mud is rapidly evaporated and enters in loft drier 31, mud is then attached on steel band 32-3, rotate clockwise with steel band 32-3, in rotation process, keep relevant temperature to carry out further drying, when mud moves to scraper plate 32-6 place, peeled off from steel band 32-3 by scraper plate 32-6 and discharge after falling into the discharge bucket 31-2 of drying baker 31, being collected by the mud after heat drying and delivering to corresponding sludge incinerator of discharging is burned.
After drying sludge, moisture content wherein enters in flue gas, composition as flue gas is processed, part of smoke is discharged after drying baker 31 through the second induced draft fan 34-2 and is entered smoke eliminator 5, another part flue gas is extracted out to deliver in incinerator by the 3rd induced draft fan 34-3 and is burned, entering in the process of incinerator, the heat of the part of flue gas is absorbed again by heat exchanger 35.In the present embodiment, the first inlet mouth 31-3 of sludge drying device 3 is communicated with the exhanst gas outlet of incinerator 4 is airtight by admission passage 100.
See Figure 12 to 14, sludge incineration device 4 comprises defeated mud device 40, pay-off 41, incinerator 42 and temperature sensor 43.
See Fig. 1, described defeated mud device 40 is screw rod conveyer, and the mud inlet end of defeated mud device 40 seals with the discharge port of the discharge bucket 31-2 of drying unit 3 and is communicated with, and the mud outlet end of defeated mud device 40 seals with the opening for feed of the hopper 41-1 of pay-off 41 and is communicated with.
See Figure 12 and Figure 14, pay-off 41 comprises hopper 41-1, shredder assemblies 41-2, feeding material component 41-3 and spray tube 41-4.Hopper 41-1 top is cuboid, the truncated cone-shaped that bottom is big up and small down, and middle part connects round transition for square.During use, hopper 41-1 upper end is communicated with the mud outlet end of defeated mud device 40 is airtight, and hopper 41-1 lower end is arranged on on the upside of the middle part of spray tube 41-4 by the airtight connection of cylindrical section 41-1-1.Shredder assemblies 41-2 comprises screen drum 41-2-1, mixing component 41-2-2 and drive-motor 41-2-3.Screen drum 41-2-1 is semicolumn hull shape, and screen drum 41-2-1 opening upwards is arranged in hopper 41-1 top, and screen drum 41-2-1 is provided with some row sieve aperture 41-2-1-1 along its axis, and each row sieve aperture 41-2-1-1 is all arranged along the circumference of screen drum 41-2-1.Mixing component 41-2-2 is made up of a rotation axis and some settings stirring rod on the rotating shaft, rotation axis is arranged on hopper 41-1 top along the axial rotation of screen drum 41-2-1, coaxial with screen drum 41-2-1, and drive it to rotate by drive-motor 41-2-3, thus drive each stirring rod that the mud after dehydration and heat drying process is broken into Powdered and is extruded from the sieve aperture 41-2-1-1 of screen drum 41-2-1.Feeding material component 41-3 comprises screw-blade 41-3-1 and the second drive-motor 41-3-2.The rotation axis vertical of screw-blade 41-3-1 is arranged, and drives screw-blade 41-3-1 to rotate by the second drive-motor 41-3-2.Screw-blade 41-3-1 is arranged in the bottom of hopper 41-1, and the lower end of screw-blade 41-3-1 contacts with the inwall of the cylindrical section 41-1-1 of hopper 41-1 lower end and forms airtight screw conveying structure, can quantitatively carry; Feeding material component 41-3 is used for sewage sludge powder broken in hopper to send in spray tube 41-4.The left end of spray tube 41-4 is provided with gas fittings 41-4-1, and gas fittings 41-4-1 is for connecting high-pressure pump; The right-hand member of spray tube 41-4 is provided with joint flange.Broken sewage sludge powder is sprayed in incinerator 42 by high-pressure air by spray tube 41-4.On pay-off 41 is supported and fixed on the drying baker 31 of drying unit 3 wall by corresponding erecting frame (not drawing in Figure of description).
Incinerator 42 comprises pedestal 42-1, base 42-2, housing 42-3, thermal insulation layer 42-4, zone of heating 42-5, inner core 42-6, mud import 42-7 and smoke exhaust pipe 42-8.Opening upwards and ash shoot 42-1-1 is forward provided with in the middle part of pedestal 42-1.Base 42-2 is arranged on above pedestal 42-1.Be provided with in the middle part of base 42-2 and run through its upper and lower sludge ash passage 42-2-1, be circumferentially with annular steam pipe 42-2-2 along base 42-2, the part that the upside of annular steam pipe 42-2-2 is inner is circumferentially with some air outlet 42-2-2-1 along it.Drawing and pulling type first gear hawk 42-2-a and second gear hawk 42-2-b is provided with from top to bottom successively in sludge ash passage 42-2-1.The base inlet mouth 42-2-3 be connected with annular steam pipe 42-2-2 is provided with on the right side of base 42-2.The airtight upside being arranged on the annular steam pipe 42-2-2 of base 42-2 of housing 42-3.Thermal insulation layer 42-4, zone of heating 42-5 and inner core 42-6 are successively set in housing 42-3 from outside to inside.Zone of heating 42-5 is the heating of electrical heater silk.Inner core 42-6 lower end communicates with sludge ash passage 42-2-1.The air outlet 42-2-2-1 of annular steam pipe 42-2-2 is between zone of heating 42-5 and inner core 42-6.Inner core 42-6 is provided with some air inlet port 42-6-1.The airtight connection of mud import 42-7 is arranged in the upper right of inner core 42-6, is connected from inside to outside through thermal insulation layer 42-4 with after housing 42-3 with the external world.The right-hand member of mud import 42-7 is communicated with the right-hand member of spray tube 41-4 is airtight.Smoke exhaust pipe 42-8 is airtight to be arranged on housing 42-3 upper end, is connected with inner core 42-6.The rear side of smoke exhaust pipe 42-8 is provided with exhanst gas outlet 42-8-1, and the top of smoke exhaust pipe 42-8 is hinged is provided with Explosion-proof cap 42-8-2.Temperature sensor 43 is for monitoring the temperature in inner core 42-6, and give corresponding automatic temp Controlling System by the data feedback of collection, automatic temp Controlling System adopts Industry Control PLC temperature control module to carry out PID minute adjustment, the frequency switching changing output terminal dutycycle is utilized to control the work of electrical heater silk, this controllable way can take into account other factors except electrical heater silk in stove the accurate control realizing temperature, its precision can reach ± and 1 degree Celsius, thus ensure sewage sludge powder under the furnace temperature of 800 degrees Celsius to 850 degrees Celsius moment Thorough combustion, avoid producing dioxin.
When sludge incineration device 4 uses, being first energized is increased to 800 degrees centigrade by in-furnace temperature.Send in hopper 41-1 by corresponding feeding unit 40 after the dehydrated and heat drying process of mud, mud is broken into Powdered by the stirring rod of shredder assemblies 41-2 and extrudes from the sieve aperture 41-2-1-1 of screen drum 41-2-1, is then sent in spray tube 41-4 by feeding material component 41-3.By high-pressure pump, air is sent into spray tube 41-4, sewage sludge powder in spray tube 41-4 sprays in the inner core of incinerator 42 by the mud import 42-7 of incinerator 42 by air-flow, sewage sludge powder forms moment Thorough combustion after entering the inner core of incinerator 42, thus the pathogenic agent in mud is killed, the hazardous and noxious substances such as organism are wherein carried out harmless treatment.
The exhanst gas outlet 42-8-1 of sludge incineration device 4 is communicated with the first inlet mouth 31-3 of drying unit 3 is airtight by admission passage 100, Drying Bed inlet mouth 32-4-1 is communicated with by corresponding pipeline sealing to the first inlet mouth 31-3 of drying baker 31, thus first the flue gas that the burning of sludge incineration device 4 produces enters in Drying Bed 32 inner chamber.
In the present embodiment, the base inlet mouth 42-2-3 of the incinerator 42 of sludge incineration device 4 is connected by the exhanst gas outlet of pipeline with the heat exchanger 35 of drying unit 3, thus the partial fume being mixed with air that drying unit 3 flows out enters burning in incinerator 42, the organism in combustion processes in flue gas is removed.
See Fig. 2, smoke eliminator 5 comprises the first fly-ash separator 51, second fly-ash separator 52, drying tower 53, corona-type dedusting odor removal 54 and chimney 55.The upper end gas approach of the first fly-ash separator 51 is connected with the exhanst gas outlet of heat exchanger 35, the lower end exhanst gas outlet of the first fly-ash separator 51 is connected with the upper end gas approach of the second fly-ash separator 52, the lower end exhanst gas outlet of the second fly-ash separator 52 is connected with the lower end inlet mouth of drying tower 53, the air outlet of drying tower 53 upper end is connected with the inlet end of corona-type dedusting odor removal 54, and the outlet side of corona-type dedusting odor removal 54 is connected with the lower end inlet mouth of chimney 55.
Described first fly-ash separator 51, second fly-ash separator 52 is tornado dust collector, for removing the particle in flue gas.In described drying tower 53, the some interlayers of bottom-up placement, every layer of interlayer places siccative, for removing the steam in flue gas.Described corona-type dedusting odor removal 54 is the high voltagehigh frequency dust cleaning and sterilizing apparatus disclosed in Chinese patent literature CN 202511399 U (application number 201220103060.2), and the ozone foul smell that can be oxidized in flue gas produced during this device real work makes foul smell degrade.The lower end of described chimney 55 arranges water shower device, and namely the lower end of chimney 55 arranges spray header, and first gas drench through water during bottom-up motion in chimney 55, after the particle further in removing gas, then from the outlet drain of chimney 55.
See Fig. 1, air feeder 6 comprises gas-holder 61, air compressor 62 and steam line 63.The inlet mouth of gas-holder 61 is connected with the air outlet of air compressor 62, and the air outlet of gas-holder 61 is connected with the spray tube 41-4 of incinerator 4 with sludge high-pressure jet apparatus 2 by each steam line 63.
The air outlet of gas-holder 61 is connected with the gas fittings 41-4-1 of the spray tube 41-4 of incinerator 4 with the second steam line 63-2 by the first steam line 63-1.
The air outlet of gas-holder 61 is connected with the cold air import of heat exchanger 35 with the 4th steam line 63-4 by the first steam line 63-1, the 3rd steam line 63-3, and the heat outlet of heat exchanger 35 is connected with the inlet mouth 21-1-5 of the nozzle boss assembly 21 of sludge high-pressure jet apparatus 2 by the 6th steam line 63-6.
The air outlet of gas-holder 61 is connected with the cylinder air inlet of the cleaning assemblies 23 of sludge high-pressure jet apparatus 2 with the 5th steam line 63-5 by the first steam line 63-1, the 3rd steam line 63-3.
(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, comprises the following steps:
1. the mud being 75% ~ 85% by the water ratio that municipal sewage plant produces is conveyed in the tank body 11 of wet mud storage tank 1, opening agitator motor 12 makes wet sludge agitation even, then opens sludge pump 13 and is sent in sludge high-pressure jet apparatus 2 by tank body 11 by wet mud.
Wet mud enters mud chamber 21-1a from the mud inlet 21-1-3 of the cylinder body 21-1 of nozzle boss assembly 21, then the mud passage 22-1 of shower nozzle 22 is entered, open air compressor, inlet mouth 21-1-5 to cylinder body 21-1 passes into high-pressure hot air, the negative pressure now produced is taken the wet mud in mud passage 22-1 out of shower nozzle 22 and is entered in the loft drier 31 of drying unit 3, the moment that wet mud enters loft drier 31 is dispersed as vaporific, and the particle diameter of wet mud granule is 80 order ~ 120 orders.
Described high-pressure hot air be from gas-holder flow out high pressure freezing air through over-heat-exchanger 35, obtain after carrying out thermal exchange with the flue gas flowed out from loft drier 31.
Be filled with the flue gas that temperature is 100 DEG C ~ 120 DEG C in the loft drier 31 of 2. drying unit 3, vaporific mud moisture content wherein in decline process becomes water vapor rapidly, and water vapor is blended in flue gas, waits for subsequent disposal.The flue gas of described 100 DEG C ~ 120 DEG C is after the high-temperature flue gas drying bed flowed out from incinerator utilizes, then flows into the flue gas in drying baker.
Mud is finally scattered on the steel band 32-3 of Drying Bed 32 under gravity, the temperature of steel band is 300 DEG C ~ 310 DEG C, moisture content in mud is rapidly evaporated, mud is then attached on steel band 32-3, rotate clockwise with steel band 32-3, in rotation process, keep relevant temperature to carry out further drying, when mud moves to scraper plate 32-6 place, peeled off from steel band 32-3 by scraper plate 32-6 and fall into the discharge bucket 31-2 of drying baker 31, the moisture percentage in sewage sludge in discharge bucket 31-2 is 4.5% ~ 8%.
Described steel band is by the flue gas heating flowed out in incinerator.
3. the dewatered sludge in discharge bucket 31-2 is delivered in pay-off 41 by the defeated mud device 40 of sludge incineration device 4, dewatered sludge be broken into Powdered after spray from spray tube 41-4, enter in the inner core 42-6 of incinerator 42 and burn.Inner core 42-6 is heated by the electrical heater silk of zone of heating 42-5 at first, and the temperature being controlled inner core 42-6 by automatic temp Controlling System is 800 DEG C ~ 850 DEG C, pulverous mud enters after in inner core 42-6 and burns instantaneously, amount of heat is produced during sludge incineration, now reduced the power of electrical heater silk by automatic control system, the temperature maintaining inner core 42-6 is 800 DEG C ~ 850 DEG C.
From having mud takes fire in incinerator 42, due to the amount of heat that sludge incineration produces, reduce the power of electrical heater silk gradually to maintain the temperature in incinerator 42.If temperature rises close to 850 DEG C in incinerator always, there is the trend of breakthrough 850 DEG C, then reduce mud inlet or strengthen air input that in-furnace temperature is declined; If temperature declines close to 800 DEG C in incinerator always, have the trend of breakthrough 800 DEG C, then the power increasing mud inlet or increase electrical heater silk carries out electric power compensation.
The flue gas produced after sludge incineration flows out from exhanst gas outlet 42-8-1, Drying Bed 32 inner chamber of drying unit 3 is entered through admission passage 100, the heat of flue gas makes steel band 32-3 be warmed up to about 300 DEG C, and be no more than 310 degrees Celsius, after heat drying bed 32 utilization of flue gas, flue gas is introduced by the first induced draft fan 34-1 and is full of in drying baker 31 from Drying Bed 32, and flue gas contacts with vaporific mud, and part moisture content is wherein made it spin off from mud by flue gas vaporization.After flue gas in drying baker and vaporific sludge hot exchange, open the second induced draft fan 34-2 and the 3rd induced draft fan 34-3, flue gas flows out from the second air outlet 31-6 and the 3rd air outlet 31-7, the first via enters smoke eliminator 5 from the right-hand member exhanst gas outlet outflow of the second pipeline 34-5 and purifies, in secondary route the 3rd induced draft fan 34-3 suction heat exchanger 35, the gas after heat exchange is entered in sludge incineration device 4 by pipeline and burns.
Sludge ash after burning is from dropping on first gear hawk 42-2-a or second gear hawk 42-2-b, and owing to being provided with two pieces of ash dampers, therefore take wherein one piece away, sludge ash still can drop on another block ash damper, and deashing process need not interrupt combustion processes.
4. the flue gas of smoke eliminator 5 is entered after the first fly-ash separator 51, second fly-ash separator 52 dedusting, enter in drying tower 53 dry, then inflow corona-type dedusting odor removal 54 removes the foul smell in gas, finally discharges from chimney after the bottom water of chimney 55 drenches.
The apparatus design of embodiment 1 becomes the treatment capacity of 50 tons to 100 tons, and detect from chimney expellant gas according to GB/T24602-2009 and GB18485-2014 standard, detected result is as following table 1 and table 2:
Table 1 exhaust emission control criterion and the present embodiment detected result
Table 2 dioxin Environmental capacity standard and the present embodiment detected result
Detect the sludge ash on ash damper after burning according to GB5085.3-2007 and GB18485-2001 " consumer waste incineration Environmental capacity standard ", detected result is as following table 3:
Table 3 residue Environmental capacity standard and the present embodiment detected result
Claims (10)
1. a sludge drying and incineration system, is characterized in that: comprise wet mud storage tank (1), sludge high-pressure jet apparatus (2), drying unit (3), incinerator (4), smoke eliminator (5) and air feeder (6);
Wet mud storage tank (1) comprises tank body (11) and mud charging line (14), and the mud outlet end of mud charging line (14) is connected with the mud inlet of sludge high-pressure jet apparatus (2);
Sludge high-pressure jet apparatus (2) is fixed on a framed side wallboard of drying baker (31) of drying unit (3), comprise nozzle boss assembly (21) and shower nozzle (22), nozzle boss assembly (21) is provided with mud inlet (21-1-3) and inlet mouth (21-1-5); The spray mud mouth of the shower nozzle (22) of sludge high-pressure jet apparatus (2) is connected with the mud import of drying baker (31), is provided with mud passage (22-1) in shower nozzle (22);
Drying unit (3) comprises drying baker (31), Drying Bed (32), drive unit (33), blower unit (34) and heat exchanger (35), it is inner that Drying Bed (32) is arranged on drying baker (31), and drive unit (33) is connected with the driving roll of Drying Bed (32);
Drying baker (31) is provided with the first inlet mouth (31-3), the first air outlet (31-4), the second inlet mouth (31-5), the second air outlet (31-6) and the 3rd air outlet (31-7);
First inlet mouth (31-3) of drying baker (31) is connected with corresponding air inletting device by admission passage (100), the flue gas of the band heat produced after providing warm air or sludge incineration by air inletting device, first inlet mouth (31-3) is communicated with the gas approach of Drying Bed (32) is airtight by corresponding pipeline, and first air outlet (31-4) of drying baker (31) is communicated with the exhanst gas outlet of Drying Bed (32) is airtight by corresponding pipeline;
Second inlet mouth (31-5), the second air outlet (31-6) and the 3rd air outlet (31-7) and drying baker (31) inner space, first air outlet (31-4) is communicated with the Exterior capsule of the second inlet mouth (31-5) at drying baker (31) by corresponding first pipeline (34-4), and the first induced draft fan (34-1) is arranged on the first pipeline (34-4); Second air outlet (31-6) is connected with the 3rd air outlet (31-7) by corresponding second pipeline (34-5); Second induced draft fan (34-2) is arranged on the right-hand member of the second pipeline (34-5), for being released by the flue gas in drying baker (31); The outlet of the second induced draft fan (34-2) is communicated with the inlet mouth of smoke eliminator (5) is airtight by pipeline; 3rd induced draft fan (34-3) is arranged on the left end of the second pipeline (34-5), and the air outlet of the 3rd induced draft fan (34-3) is connected by the gas approach of corresponding pipeline with heat exchanger (35);
Incinerator (4) comprises defeated mud device (40), pay-off (41), incinerator (42) and temperature sensor (43), the mud inlet end of defeated mud device (40) seals with the discharge port of drying unit (3) and is communicated with, the mud outlet end of defeated mud device (40) seals with the opening for feed of pay-off (41) and is communicated with, and the discharge port of pay-off (41) seals with the opening for feed of incinerator (42) and is communicated with;
The air outlet of air feeder (6) is connected with the pay-off (41) of incinerator (4) with sludge high-pressure jet apparatus (2) by each steam line (63).
2. sludge drying and incineration system according to claim 1, is characterized in that: the diameter being positioned at the mud passage (22-1) of mud extraction section of the shower nozzle (22) of sludge high-pressure jet apparatus (2) is 12 millimeters to 20 millimeters;
First inlet mouth (31-3) of drying baker (31) is connected by the exhanst gas outlet of admission passage (100) with the incinerator (42) of incinerator (4).
3. sludge drying and incineration system according to claim 2, it is characterized in that: air feeder (6) comprises gas-holder (61), air compressor (62) and steam line (63), the air outlet of gas-holder (61) is by the first steam line (63-1), 3rd steam line (63-3) is connected with the cold air import of heat exchanger (35) with the 4th steam line (63-4), the heat outlet of heat exchanger (35) is connected with the inlet mouth (21-1-5) of the nozzle boss assembly (21) of sludge high-pressure jet apparatus (2) by the 6th steam line (63-6).
4. sludge drying and incineration system according to claim 2, is characterized in that: the exhanst gas outlet of heat exchanger (35) is connected with the inlet mouth of the incinerator (42) of sludge incineration device (4).
5. sludge drying and incineration system according to claim 1, it is characterized in that: wet mud storage tank (1) also comprises agitator motor (12), agitating vane and sludge return pipe (15), agitator motor (12) is arranged on the bottom outside of tank body (11), the bottom-up inner chamber stretching into tank body (11) of motor shaft of agitator motor (12), motor shaft is connected with the agitating vane of tank body (11) inside; The mud inlet end mouth of sludge return pipe (15) is connected with the mud return mouth of mud jet apparatus (2), and the mud extraction port of sludge return pipe (15) is connected with the mud entrance that returns on the sidewall of tank body (11).
6. sludge drying and incineration system according to claim 1, is characterized in that: smoke eliminator (5) comprises the first fly-ash separator (51), the second fly-ash separator (52), drying tower (53), corona-type dedusting odor removal (54) and chimney (55); The upper end gas approach of the first fly-ash separator (51) is connected with the exhanst gas outlet of heat exchanger (35), the lower end exhanst gas outlet of the first fly-ash separator (51) is connected with the upper end gas approach of the second fly-ash separator (52), the lower end exhanst gas outlet of the second fly-ash separator (52) is connected with the lower end inlet mouth of drying tower (53), the air outlet of drying tower (53) upper end is connected with the inlet end of corona-type dedusting odor removal (54), and the outlet side of corona-type dedusting odor removal (54) is connected with the lower end inlet mouth of chimney (55);
Described first fly-ash separator (51), the second fly-ash separator (52) are tornado dust collector, for removing the particle in flue gas; In described drying tower (53), the some interlayers of bottom-up placement, every layer of interlayer places siccative, for removing the steam in flue gas; Described corona-type dedusting odor removal (54) is for removing particle in flue gas and foul smell; The lower end of described chimney (55) arranges water shower device.
7. a method for sludge drying and incineration system anhydration and incineration mud as claimed in claim 1, is characterized in that comprising the following steps:
1. the wet mud being 75% ~ 85% by the water ratio that municipal sewage plant produces is conveyed in the tank body (11) of wet mud storage tank (1), opens sludge pump (13) and will wet mud by sending in sludge high-pressure jet apparatus (2) in tank body (11); Open air compressor and gas-holder, inlet mouth (21-1-5) to sludge high-pressure jet apparatus (2) passes into high-pressure hot air, wet mud is taken out of shower nozzle (22) and is entered in the loft drier (31) of drying unit (3) by the negative pressure now produced, and the moment that wet mud enters loft drier (31) is dispersed as vaporific;
Be filled with the flue gas that temperature is 100 DEG C ~ 120 DEG C in the loft drier (31) of 2. drying unit (3), vaporific mud in decline process with flue gas heat exchange; Mud is finally scattered on Drying Bed (32) under gravity, the temperature on Drying Bed (32) surface is 300 DEG C ~ 310 DEG C, moisture content in mud evaporates rapidly, mud is attached to Drying Bed (32) on the surface, mobile with Drying Bed (32) surface, dry further in moving process, mud is finally peeled off on the surface from Drying Bed (32) by scraper plate and falls into the discharge bucket of drying baker (31);
3. the dewatered sludge in discharge bucket is delivered in pay-off (41) by the defeated mud device (40) of sludge incineration device (4), dewatered sludge be broken into Powdered after enter the middle burning of incinerator (42); The flue gas produced after sludge incineration flows out from exhanst gas outlet, enters Drying Bed (32) inner chamber of drying unit (3) through admission passage (100);
4. the high-temperature flue gas produced after burning is introduced into Drying Bed (32) inner chamber, loft drier (31) inner chamber is entered again after Drying Bed (32) inner chamber flows out, flow out from loft drier (31) inner chamber after flue gas and wet mud complete heat exchange, part of smoke enters smoke eliminator (5), flue gas is through the first fly-ash separator (51), after second fly-ash separator (52) dedusting, enter in drying tower (53) dry, then the foul smell in corona-type dedusting odor removal (54) removal gas is flowed into, finally discharge from chimney after the bottom water of chimney (55) drenches, another part flue gas flowed out from loft drier (31) inner chamber enters burning incinerator (42) after over-heat-exchanger (35).
8. the method for anhydration and incineration mud according to claim 7, it is characterized in that: step high-pressure hot air 1. used be the high pressure freezing air that flows out from gas-holder through over-heat-exchanger (35), obtain after carrying out thermal exchange with the flue gas flowed out from loft drier (31); Flow velocity when mud sprays from sludge high-pressure jet apparatus (2) is 1m/s to 3m/s.
9. the method for anhydration and incineration mud according to claim 7, is characterized in that: incinerator (42) interior control temperature is 800 DEG C ~ 850 DEG C.
10. the method for anhydration and incineration mud according to claim 7, is characterized in that: after 2. step is dried and terminated, and in the discharge bucket of drying baker (31), the water ratio of mud is 5% ~ 10%.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090994A (en) * | 2015-09-16 | 2015-11-25 | 张家港市合力能源发展有限公司 | Sludge incineration disposal method and incineration system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08121735A (en) * | 1994-10-26 | 1996-05-17 | Mitsubishi Nagasaki Mach Co Ltd | Sludge drying, incinerating and melting treatment system and combustion and melting treatment method thereof and differential pressure control system |
| CN102211845A (en) * | 2010-04-08 | 2011-10-12 | 北京朗新明环保科技有限公司 | Sludge treatment and disposal system and method |
| CN102276130A (en) * | 2011-05-31 | 2011-12-14 | 陈海渊 | Sludge resource treatment apparatus and sludge treatment method using the same |
| CN204752503U (en) * | 2015-05-29 | 2015-11-11 | 常州振业机械设备有限公司 | Sludge drying system of burning |
-
2015
- 2015-06-05 CN CN201510306826.5A patent/CN104891769B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08121735A (en) * | 1994-10-26 | 1996-05-17 | Mitsubishi Nagasaki Mach Co Ltd | Sludge drying, incinerating and melting treatment system and combustion and melting treatment method thereof and differential pressure control system |
| CN102211845A (en) * | 2010-04-08 | 2011-10-12 | 北京朗新明环保科技有限公司 | Sludge treatment and disposal system and method |
| CN102276130A (en) * | 2011-05-31 | 2011-12-14 | 陈海渊 | Sludge resource treatment apparatus and sludge treatment method using the same |
| CN204752503U (en) * | 2015-05-29 | 2015-11-11 | 常州振业机械设备有限公司 | Sludge drying system of burning |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090994B (en) * | 2015-09-16 | 2017-05-17 | 张家港市合力能源发展有限公司 | Sludge incineration disposal method and incineration system |
| CN105090994A (en) * | 2015-09-16 | 2015-11-25 | 张家港市合力能源发展有限公司 | Sludge incineration disposal method and incineration system |
| 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 |
| 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 |
| CN108019764A (en) * | 2016-11-02 | 2018-05-11 | 天津天控科技有限公司 | A kind of sludge incineration device |
| CN107473564B (en) * | 2017-09-26 | 2023-08-29 | 重庆盎瑞悦科技有限公司 | Harmless treatment method and system for domestic sludge |
| CN107473564A (en) * | 2017-09-26 | 2017-12-15 | 重庆盎瑞悦科技有限公司 | The method for innocent treatment and system of a kind of domestic sludge |
| CN108167834A (en) * | 2017-11-23 | 2018-06-15 | 湖南望隆企业管理咨询有限公司 | Drying type burning facility in a kind of environment-friendly type |
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