CN108224430A - House refuse cooperates with burning sludge device - Google Patents
House refuse cooperates with burning sludge device Download PDFInfo
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- CN108224430A CN108224430A CN201810079501.1A CN201810079501A CN108224430A CN 108224430 A CN108224430 A CN 108224430A CN 201810079501 A CN201810079501 A CN 201810079501A CN 108224430 A CN108224430 A CN 108224430A
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- Prior art keywords
- sludge
- burner
- roller
- house refuse
- burning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
Abstract
The invention belongs to field of garbage disposal, provide a kind of house refuse collaboration burning sludge device.The device includes：Incinerator, the incinerator have burner hearth, and fire grate is located in the burner hearth, and house refuse is burned on the fire grate；Burner, the burner is located in the burner hearth, the top of the fire grate, and the burner causes dewatered sludge particle to be sufficiently mixed with air for being distributed to dewatered sludge particle in the burner hearth of the incinerator.House refuse collaboration burning sludge device provided by the invention can make full use of the thermal energy of house refuse burning release to handle municipal sludge on a large scale, improve the mixed-fuel burning proportion of sludge, can sludge addition content be adjusted according to combustion position in incinerator in real time, provide the utilization rate and efficiency of sludge treatment of energy.
Description
Technical field
The invention belongs to field of garbage disposal, more particularly to a kind of house refuse collaboration burning sludge device.
Background technology
By the end of the end of the year 2015, municipal sludge harmlessness disposing rate 53%, county town sewage sludge harmlessness disposing rate 24.3%.
《" 13 " whole nation urban wastewater treatment and the planning of regeneration Facilities Construction》It is required that the year two thousand twenty bottom, municipal sludge is harmless
Change disposition rate and reach 75%, county town sewage sludge harmlessness disposing rate reaches 60%.Sewage sludge harmlessness disposing facility scale was by 2015
3.74 ten thousand ton per days at bottom are increased to 9.75 ten thousand ton per days at the year two thousand twenty bottom.Form is severeer, and pressure development is bigger.
At present the country municipal sewage plant generate excess sludge after mechanical dehydration moisture percentage in sewage sludge generally 75%
~80%, 75% is almost the attainable limit of mechanical dehydration institute.
The current disposal options of sludge mainly have landfill, burning, land use, microbiological treatment etc..It wherein fills, burn
It is similar with the processing disposal options and advantage and disadvantage of the modes such as microbiological treatment and house refuse.Sludge after mechanical dehydration is direct
Landfill, takes up a large area；A large amount of percolates and landfill gas can be generated after the higher Sludge landfill of content of organics；Dewatered sludge is not
Meet the shear strength requirement of refuse landfill, landfill can influence the water-permeable and air permeable performance of landfill yard reluctantly and earthing, shortening are filled out
Bury service life.Current each state is all in the landfill ratio for gradually reducing municipal sludge.Directly burn need put into fuel combustion supporting,
High energy consumption.Direct mixed burning causes fire box temperature to decline, boiler efficiency reduces, and to put into auxiliary fuel could maintain normally to transport
Row；Water vapour content in the flue gas that boiler system discharged is caused to sharply increase, accelerates and boiler and follow-up fume treatment is set
Standby corrosion；The flue gas of discharge contains a large amount of high-temperature steams, increases the load of flue gas post processing, influences the operation effect of cleaner
Fruit.The advantages of sludge landfill characteristics is not need to landfill volume, and the recycling substance in sludge can be utilized effectively, and shortcoming is
There are certain environmental risk, the harmful substance in sludge may adversely affect underground water, surrounding body and crop.
Microbiological treatment needs take up a large area, efficiency is low, the period is long, and there are the risks that stink scatters and disappears.
The requirement of specific resistance to filtration is：Stabilisation, innoxious, minimizing, recycling.
By burning, by after-flames such as organic matter and bacteriums, solid residue landfill realizes stabilisation and innoxious；80%
The sludge volume of moisture content can reduce by 90%, realize minimizing；The sludge calorific value and MSW heating value of 40% moisture content
Quite, therefore by moisture percentage in sewage sludge reduction recycling can be realized to a certain extent.
By the direct cooperated with consumer waste incineration of the sludge of moisture content after mechanical dehydration 75%~80%, at most mix burning and cannot surpass
20% ratio is crossed, this cannot meet current technological development and social progress and Treatment of Sludge pressure is increasingly increased
It is required that.The moisture percentage in sewage sludge of 80% moisture content is reduced to 50% or so, the moisture in the sludge of 80% moisture content can be taken off
Remove 75%, it is contemplated that mixed-fuel burning proportion can be increased to more than 50%.
Burn that take mostly mixed sludge and house refuse in garbage pool or by sludge since current sludge is mixed
It is sprayed directly on in feed hopper, all there are sludge and the non-uniform situation of domestic garbage mixing for both modes.House refuse and dirt
Mud is pushed to combustion zone burning and takes around time of 1~1.5h Zi being arrived into feed hopper, once generation MSW heating value
Too low or subregion sludge mixed-fuel burning proportion is excessive, it will fire box temperature is caused to decline, then adjusting sludge mixed-fuel burning proportion again will
There are serious lag.
The sludge of moisture content 75%~80%, which directly burns, after mechanical dehydration needs to consume a large amount of fuel；Directly with life
Rubbish mixes burning and is affected to fire box temperature, and processing sludge proportion is too small, can not meet and currently Treatment of Sludge is advised
The requirement that mould urgently increases sharply does not meet the requirement of technology development and social progress yet.
Therefore, currently there is an urgent need for one kind can handle on a large scale municipal sludge but also according to combustion position in incinerator it is real-time
Adjust the technology of the house refuse collaboration burning disposal municipal sludge of sludge addition content.
Invention content
In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of house refuses to cooperate with burning sludge
Device.
The present invention provides a kind of house refuses to cooperate with burning sludge device, including：
Incinerator, the incinerator have burner hearth, and fire grate is located in the burner hearth, and house refuse is burnt on the fire grate
It burns；
Burner, the burner is located in the burner hearth, the top of the fire grate, and the burner is used for dewatered sludge
Particle is distributed in the burner hearth of the incinerator, and dewatered sludge particle is sufficiently mixed with air.
Preferably, house refuse collaboration burning sludge device further includes：
Drying machine, the drying machine are to dry the rotary roller dryer of sludge using heat smoke or utilize steam drying dirt
The rotary roller dryer of mud.
Preferably, the rotary roller dryer using heat smoke drying sludge includes roller, and the drum-inclined is set
It puts, is rotatable；The low side of the roller is provided with smoke inlet and sludge outlet, and high end side is provided with exhanst gas outlet and sludge
Entrance；Multiple dog-ear plates with gradient are provided on the inner wall of the roller；
Preferably, blow-off valve is provided at the sludge outlet, to control the row of the dewatered sludge formed after drying
Go out；
Preferably, multiple dog-ear plates are uniformly distributed on the inner wall of the roller along the axial direction of the roller；Into
Preferably, multiple dog-ear plates still uniformly divide one step on the inner wall of the roller along the circumferential direction of the roller simultaneously
Cloth；
Preferably, the gradient of multiple dog-ear plates is 30~60 °.
Preferably, the rotary roller dryer using steam drying sludge includes roller, drum-inclined setting,
It is rotatable；The roller be double-layer structure, the sludge pipe of steam sleeve and internal layer including outer layer；The steam sleeve and described
Sludge pipe is mutually isolated；The low side of the roller is provided with steam inlet, and the steam inlet is communicated with the steam sleeve,
Steam is sent into the steam sleeve；The high end side of the roller is provided with steam (vapor) outlet, the steam (vapor) outlet with it is described
Steam sleeve communicates, and steam is discharged out of described steam sleeve；The high end side of the roller is additionally provided with sludge inlet, institute
It states sludge inlet to communicate with the sludge pipe, wet mud is sent into the sludge pipe；The low side of the roller is additionally provided with
Sludge outlet, the sludge outlet are communicated with the sludge pipe, by the dewatered sludge formed after drying from the sludge pipe
Interior discharge；Multiple dog-ear plates with gradient are provided on the inner wall of the sludge pipe；
Preferably, blow-off valve is additionally provided at the sludge outlet, to control the dewatered sludge formed after drying
Discharge；
Preferably, multiple dog-ear plates uniformly divide on the inner wall of the sludge pipe along the axial of the sludge pipe
Cloth；It is further preferred that multiple dog-ear plates are also simultaneously on the inner wall of the sludge pipe along the circumferential direction of the sludge pipe
Also it is uniformly distributed；
Preferably, the gradient of multiple dog-ear plates is 30~60 °.
Preferably, house refuse collaboration burning sludge device further includes：
Grinder, the grinder are used to be ground processing to the sludge after drying machine drying process, make
It obtains dewatered sludge and is ground into dewatered sludge particle of the grain size between 1mm~10mm.
Preferably, house refuse collaboration burning sludge device, further includes：
Dewatered sludge storehouse, the dewatered sludge that the dewatered sludge storehouse is formed for storage after the grinder milled processed
Grain.
Preferably, house refuse collaboration burning sludge device, further includes：
Charging gear, the charging gear include screw(-type) feeder and feed screw；The dewatered sludge storehouse is arranged on institute
State the top of the feed inlet of screw(-type) feeder, the feed inlet phase of the discharge port of the screw(-type) feeder and the feed screw
Even.
Preferably, the discharge port of the feed screw is connected with the feed inlet of the burner, and the burner
Compressed air inlet is provided at feed inlet.
Preferably, the stepped distribution of the fire grate is divided into 3-5 sections and inclined arrangement, and every section has multiple stove pieces；
Multiple stove pieces along the incinerator feed inlet to the direction of slag notch by successively reduce height in the way of set
It puts, it is stepped so as to be formed.
Preferably, the burner is provided with two rows, respectively first row burner and second row burner；
The first row burner and the second row burner are set side by side with multiple burners；Wherein, described
One row's burner is located at the upstream of the fire grate, and the second row burner is located at the downstream of the fire grate；
House refuse collaboration burning sludge device further includes screening installation, and the screening installation after grinding to forming
Dewatered sludge particle is screened, and the larger dewatered sludge particle of grain size is sent to the first row burner, and grain size is smaller
Dewatered sludge particle is sent to the second row burner；
Preferably, the burner is arranged on the lower section of secondary air nozzle, and the overfire air port is arranged on the burning
The top of interior, the described fire grate of the burner hearth of stove.
House refuse collaboration burning sludge device provided by the invention can make full use of the heat of house refuse burning release
Municipal sludge can be handled on a large scale, improves the mixed-fuel burning proportion of sludge, can dirt be adjusted according to combustion position in incinerator in real time
Mud addition content provides the utilization rate and efficiency of sludge treatment of energy.
Other features and advantages of the present invention will be in following specific embodiment part detailed description.
Description of the drawings
Fig. 1 is the structural representation that the house refuse that the specific embodiment of the present invention provides cooperates with burning sludge device
Figure.
Fig. 2 shows a kind of preferred structure schematic diagrames of the rotary roller dryer using heat smoke drying sludge.
Fig. 3 shows a kind of preferred structure schematic diagram of the rotary roller dryer using steam drying sludge.
Fig. 4 shows the preferred structure schematic diagram of a kind of dewatered sludge storehouse and charging gear, shows screw(-type) feeder and spiral shell
Revolve feeder.
Wherein, the reference numerals are as follows in figure：
1- drying machines, 2- grinders, 3- burners, 4- incinerators, 5- fire grates, bis- air nozzles of 6-, 7- dewatered sludges storehouse,
31- first row burners, 32- second row burners, 33- compressed air inlets, 81- screw(-type) feeders, 82- feed screws,
111- rollers, 112- smoke inlets, 113- exhanst gas outlets, 114- sludge inlets, 115- sludge outlets, 116- dog-ear plates, 121-
Roller, 122- steam sleeves, 123- sludge pipes, 124- steam inlets, 125- steam (vapor) outlets, 126- sludge inlets, 127- sludge
Outlet, 128- dog-ear plates.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with implementation of the attached drawing to the present invention
Mode is described in further detail.It should be understood that the specific embodiments described herein are only used for describing and explaining
The present invention is not intended to restrict the invention.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.Can be wired connection or wireless connection for electricity and the communications field.For
For those of ordinary skill in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As shown in Figure 1, the present invention provides a kind of house refuses to cooperate with burning sludge device, including drying machine 1, grinder
2nd, burner 3 and incinerator 4.
Drying machine 1 to the sludge after mechanical dehydration for being dried processing, to reduce the moisture content of sludge.By
The moisture content of sludge after mechanical dehydration is generally 75%~80%, and 40% can be reduced to after the drying process of drying machine 1
~60%.Drying machine 1 can utilize the heat of heat smoke or steam that processing is dried to the sludge after mechanical dehydration,
The water in sludge is further sloughed, reduces the moisture content of sludge.
As shown in Fig. 2, drying machine 1 can be the rotary roller dryer that sludge is dried using heat smoke.The revolving cylinder
Drying machine includes a roller 111 being obliquely installed.Roller 111 can rotate under the drive of power-equipment (such as motor).
In order to describe conveniently, the higher one end of roller 111 can be known as to high end side (left side in Fig. 2), relatively low one end is referred to as low
End side (right side in Fig. 2).The low side of roller 111 is provided with smoke inlet 112.The high end side of roller 111 is provided with flue gas
Outlet 113.The higher heat smoke of temperature enters from smoke inlet 112 in roller 111, and laterally high from low side in roller 111
End side moves, and is finally discharged from exhanst gas outlet 113.The high end side of roller 111 is additionally provided with sludge inlet 114.Roller 111 it is low
End side is additionally provided with sludge outlet 115.Blow-off valve (not shown) can also be set at sludge outlet 115, to control through overdrying
The discharge of the dewatered sludge formed after dry.The higher wet mud of moisture content enters from sludge inlet 114 in roller 111, and in roller
It moves from high-end lateral low side in 111, is finally discharged from sludge outlet 115.Multiple tools are provided on the inner wall of roller 111
There is the dog-ear plate 116 of gradient.In a kind of preferred embodiment, multiple dog-ear plates 116 are on the inner wall of roller 111
Be uniformly distributed along the axial direction of roller 111 (that is, the central shaft of roller 111 projection be separated by between any two identical distance or
Person joins end to end distribution)；It is further preferred that multiple dog-ear plates 116 are also simultaneously on the inner wall of roller 111 along roller 111
Circumferential direction be also uniformly distributed (that is, in projection of the rip cutting disc of roller 111 between any two be in identical angle).For example, work as
There are three dog-ear plate 116 when, the projection two of central shaft of three dog-ear plates 116 on the inner wall of roller 111 and in roller 111
It is separated by identical spacing between two or the distribution that joins end to end, and in the projection of the rip cutting disc of roller 111 between any two
It is in 120 ° of angle.The gradient of dog-ear plate 116 can be 30~60 °.The gradient of dog-ear plate 116 refer to dog-ear plate 116 with
The angle of horizontal plane (horizontal plane when dog-ear plate 116 is horizontal positioned).Set dog-ear plate that can make on the inner wall of roller 111
It obtains and carries sludge during roller 111 rotates, again throw down sludge after being raised to certain angle/height, so as to
Sludge is come into full contact with heat smoke, to obtain sufficient heat from heat smoke by drying sludge, while can also be in dog-ear
So that sludge is moved from the high-end lateral low side of roller 111 under the drive of plate.
In actual use, wet mud is from the high-end lateral low side movement of roller 111, and heat smoke is from roller 111
Low side laterally high-end side movement that is, wet mud and heat smoke counter current contacting, can improve the utilization ratio of heat in this way.Tool
Body, wet mud enters from the sludge inlet 114 positioned at the high end side of roller 111 in roller 111, and roller 111 is in power-equipment
Drive under rotate so that wet mud falls as the rotation of roller 111 is raised to after certain altitude, stirs, and with from roller 111
The heat smoke of adverse current that enters of smoke inlet 112 of low side come into full contact with, accelerate dry heat transfer.In the drying of wet mud
In the process, due to being provided with multiple dog-ear plates 116 on the inner wall of roller 111, sludge can be in the dog-ear with gradient
It is dehydrated while moving to the low side of roller 111 under the action of plate 116 and heat smoke air-flow.By adjusting rotating cylinder
111 rotary speed, drying time that can be with conditioning of mud in roller 111, the rotary speed of roller 111 is faster, and sludge exists
Drying time in roller 111 is shorter, it is dry after moisture content it is higher, it is on the contrary then moisture percentage in sewage sludge is lower.It therefore, can be according to wet
The moisture content of moisture content and purpose the outlet sludge of sludge is (that is, the dewatered sludge discharged from the sludge outlet 115 of roller 111 contains
Water rate), the rotary speed of setting heat smoke flow and roller 111.In practical application, heat smoke can be from waste incinerator
The flue gas of discharge.
As shown in figure 3, drying machine 1 can be the rotary roller dryer using steam drying sludge.The revolving cylinder is done
Dry machine includes a roller 121 being obliquely installed.Roller 121 can rotate under the drive of power-equipment (such as motor).Rolling
Cylinder 121 be double-layer structure, the sludge pipe 123 of steam sleeve 122 and internal layer including outer layer.Steam sleeve 122 and sludge pipe 123
It is mutually isolated.Steam sleeve 122 is used to pass through for steam.Sludge pipe 123 is used to pass through for sludge.It, can be in order to describe conveniently
The higher one end of roller 121 is known as high end side (left side in Fig. 3), relatively low one end is known as low side (right side in Fig. 3).
The low side of roller 121 is provided with steam inlet 124.Steam inlet 124 is communicated with steam sleeve 122, and steam is sent into and is steamed
In steam casing cylinder 122.The high end side of roller 121 is provided with steam (vapor) outlet 125.Steam (vapor) outlet 125 is communicated with steam sleeve 122, with
Steam is discharged out of steam sleeve 122.The higher hot steam of temperature enters from steam inlet 124 in roller 121, and in roller
From low side laterally high-end side movement in 121, finally discharged from steam (vapor) outlet 125, be located at sludge pipe 123 so as to transfer heat to
Interior wet mud so that wet mud dehydrates.The high end side of roller 121 is additionally provided with sludge inlet 126.Sludge inlet 126
It is communicated with sludge pipe 123, wet mud is sent into sludge pipe 123.The low side of roller 121 is additionally provided with sludge outlet 127.
Sludge outlet 127 is communicated with sludge pipe 123, and the dewatered sludge formed after drying is discharged out of sludge pipe 123.Sludge goes out
Blow-off valve (not shown) can also be set at mouth 127, to control the discharge of the dewatered sludge formed after drying.Moisture content compared with
High wet mud enters from sludge inlet 126 in the sludge pipe 123 of roller 121, and from high-end lateral low side in sludge pipe 123
Side moves, and is finally discharged from sludge outlet 127.Multiple dog-ear plates with gradient are provided on the inner wall of sludge pipe 123
128.In a kind of preferred embodiment, multiple dog-ear plates 128 are on the inner wall of sludge pipe 123 along sludge pipe 123
Axial direction be uniformly distributed (that is, the projection in the central shaft of sludge pipe 123 is separated by identical distance or joins end to end between any two
Distribution)；It is further preferred that multiple dog-ear plates 128 are also simultaneously on the inner wall of sludge pipe 123 along the circumferential direction of sludge pipe 123
Also it is uniformly distributed (that is, being in identical angle between any two in the projection of the rip cutting disc of sludge pipe 123).For example, when having three
During a dog-ear plate 128, the projection two of central shaft of three dog-ear plates 128 on the inner wall of sludge pipe 123 and in sludge pipe 123
Be separated by identical spacing between two or the distribution that joins end to end, and in the projection of the rip cutting disc of sludge pipe 123 two-by-two it
Between be in 120 ° of angle.The gradient of dog-ear plate 128 can be 30~60 °.The gradient of dog-ear plate 128 refers to dog-ear plate 128
With the angle of horizontal plane.Setting dog-ear plate that can cause on the inner wall of sludge pipe 123 will be dirty during roller 121 rotates
Mud carries, and again throws down sludge after being raised to certain angle/height, so that sludge can obtain fully from steam
Heat by drying sludge, while can also be under the drive of dog-ear plate so that high-end lateral low side of the sludge from roller 121
Movement.
In actual use, wet mud is moved from high-end lateral low side in the sludge pipe 123, and hot steam is from vapour jacket
The low side of pipe 122 laterally high-end side movement, that is, the direction of motion of wet mud and hot steam on the contrary, can improve heat in this way
Utilization ratio.Specifically, wet mud enters from the sludge inlet 126 positioned at the high end side of roller 121 in sludge pipe 123, dirty
Mud pipe 123 rotates under the drive of power-equipment so that wet mud is fallen after being raised to certain altitude with the rotation of sludge pipe 123
It falls, stir, and receive to enter steam jacket 122 and wet mud movement from the steam inlet 124 of the low side of roller 121
The heat of the opposite hot steam in direction, so as to accelerate dry heat transfer.In the drying process of wet mud, due to sludge pipe 123
Inner wall on be provided with multiple dog-ear plates 128, therefore sludge can be in the warm provided with angled dog-ear plate 128 and hot steam
It is dehydrated while moving to the low side of roller 121 under the action of amount.By adjusting rotating cylinder 121 rotary speed (i.e.
The rotary speed of sludge pipe 123), drying time that can be with conditioning of mud in roller 121, the rotary speed of roller 121 is faster,
Drying time of the sludge in roller 121 is shorter, it is dry after moisture content it is higher, it is on the contrary then moisture percentage in sewage sludge is lower.It therefore, can be with
According to the moisture content of the moisture content of wet mud and purpose outlet sludge (that is, the dry dirt discharged from the sludge outlet 127 of roller 121
The moisture content of mud), the rotary speed of setting hot steam flow and roller 121.In practical application, steam can be from steam turbine
Steam extraction, with two take out steam extractions it is more economical suitable.
Grinder 2 is used to be ground processing to the sludge after the drying process of drying machine 1 so that dewatered sludge is ground
Into graininess, so that subsequent burning is handled.It can rely on the dead weight of sludge will by using conveyer belt or by pipeline
Dried sludge is transported to grinder 2, and the present invention does not do this specific restriction, as long as can dewatered sludge be transported to grinder
2.After 2 milled processed of grinder, dewatered sludge can form dewatered sludge particle of the grain size between 1mm~10mm.
In a preferred embodiment, as shown in figure 4, the dewatered sludge formed after 2 milled processed of grinder
Grain is introduced into dewatered sludge storehouse 7 and stores, and be transported to burner 3 by charging gear when needed and burn.
Referring to Fig. 4, charging gear includes screw(-type) feeder 81 and feed screw 82.Dewatered sludge storehouse 7 can be arranged on spiral shell
Revolve the top of the feed inlet of batcher 81.The discharge port of screw(-type) feeder 81 is connected with the feed inlet of feed screw 82.
Burner 3 is used to provide burning condition for dewatered sludge particle so that dewatered sludge particle fully burns.Burner 3 can
Dewatered sludge particle is evenly dispersed into as possible in the burner hearth of incinerator 4, and so that dewatered sludge particle and air are sufficient
Mixing.Burner 3 is located in the burner hearth of incinerator 4, the top of fire grate 5.
In a kind of preferred embodiment, as shown in figure 4, the discharge port of feed screw 82 and burner 3
Feed inlet is connected, and compressed air inlet 33 is provided at the feed inlet of burner 3.When feed screw 82 is by dewatered sludge particle
When being transported to the feed inlet of burner 3, compressed air sprays into burner 3 from compressed air inlet 33, by dewatered sludge particle and sky
It burns gas is sent to burner 3 outlet after being sufficiently mixed.
Incinerator 4 has burner hearth, and burner hearth provides the burning place of house refuse and dewatered sludge.Incinerator 4 can be rubbish
Rubbish incinerator, for example, for the waste incinerator of burning domestic garbage.There is fire grate 5 in the burner hearth of incinerator 4.Fire grate 5 is in
Stepped distribution is segmented into 3-5 sections and inclined arrangement, and every section has multiple stove pieces；On the whole, multiple stove pieces along
The feed inlet of incinerator 4 is set to the direction of slag notch in the way of height is reduced successively, stepped so as to be formed.
In actual use, house refuse is burnt on fire grate 5, just position after dewatered sludge particle is sprayed by burner 3
Above house refuse burned flame, so as to be heated rapidly by heat smoke so that the smaller lighter dewatered sludge particle of particle hangs
Floating burning, the larger heavier dewatered sludge particle of particle is heated during decline, is crushed, discharging gas fuel burning, unburned
Most dewatered sludge particle drops on fire grate 5 to burn together with house refuse.Since dewatered sludge grain diameter is small, and containing fixed carbon
Ratio is small, therefore being capable of rapid after-flame.
In a kind of preferred embodiment, burner 3 can set two rows, respectively 31 He of first row burner
Second row burner 32.First row burner 31 and second row burner 32 are set side by side with multiple burners.Wherein, first
Row's burner 31 is located at the upstream (on fire grate 5 at higher position) of fire grate 5, and second row burner 32 is located at the downstream of fire grate 5
(on fire grate 5 at relatively low position).It is further preferred that screening installation (not shown) can also be set, with to being formed after grinding
Dewatered sludge particle screened, and the larger dewatered sludge particle of grain size is sent to first row burner 31, grain size is smaller
Dewatered sludge particle is sent to second row burner 32.It is fired since the larger dewatered sludge particle of grain size is sprayed from first row burner 31
It burns, and first row burner 31 is located at the upstream of fire grate 5, therefore has more fully that the time burns, so as to improve
The burning degree of dewatered sludge particle, the smaller dewatered sludge particle of grain size from second row burner 32 spray burn, due to grain size compared with
Small dewatered sludge particle easily burns, and does not need to the too long of time and burns, therefore from the second row positioned at the downstream of fire grate 5
Burner 32 sprays burning, it is also ensured that the abundant burning of dewatered sludge particle；In short, this setup can greatly improve
The burning degree of dewatered sludge particle improves efficiency of combustion.With multiple burners is set to be adapted, multiple screw feeders can be set
Machine and multiple feed screws, each burner both correspond to a screw(-type) feeder and a feed screw, are come with receiving
Dewatered sludge particle from dewatered sludge storehouse.
In a kind of preferred embodiment, burner 3 is arranged on the lower section of secondary air nozzle 6.Overfire air port 6
It being arranged in the burner hearth of incinerator 4, the top of fire grate 5, overfire air port 6 can spray into air into the burner hearth of incinerator 4, with
Help the abundant after-flame of fuel gas evaporated during house refuse burning.Since burner 3 is arranged under secondary air nozzle 6
Side, the sky that the uncombusted fuel gas that house refuse is evaporated when burning on fire grate 5 can be provided in secondary air nozzle 6
It burns with the help of gas, and just the sludge that burner 3 sprays can be further dried as early as possible for the heat generated that burns,
Sufficient oxygen can also be provided for the fuel gas being precipitated in sludge simultaneously, the after-flame as early as possible of the combustible component in help sludge.
In actual use, the penetrating speed of dewatered sludge particle and quantity can be true according to the combustion case in incinerator 4
It is fixed, to adjust in real time.For example, multiple temperature measuring points can be set in the burner hearth of incinerator 4 (for example, there is 3*3 in main monitoring point
Thermometric arrangement), to detect fire box temperature, so as to judge (the ginseng of combustion position in incinerator of the combustion case in incinerator
It is mainly fire box temperature according to index), furnace temperature caused by mixing the excessive possibility of burning amount to avoid dewatered sludge particle is relatively low, it is impossible to meet life
The furnace temperature requirement of waste incineration living.
In practical applications, due to the improvement lived with our people, the calorific value of house refuse steps up, country's fortune
Row 10 years and above burning line Actual combustion refuse thermal value already exceed design value, that is to say, that if it is relatively low to spray into calorific value
Sludge carry out burning and absorb heat, the burning amount of house refuse can also be increased to a certain extent.
In the prior art, by the direct cooperated with consumer waste incineration of the sludge of moisture content after mechanical dehydration 75%~80%,
The ratio burnt no more than 20% is at most mixed, therefore, has been unable to meet current technological development and social progress and Treatment of Sludge
The increasingly increased requirement of pressure.The present invention by the way that the moisture content of the sludge of 80% moisture content is reduced to 50% or so, fall by removing
The 75% of moisture in the sludge of 80% moisture content is filled in combination with house refuse collaboration burning sludge provided by the invention is used
It puts, the mixed-fuel burning proportion of sludge and house refuse can be caused to be increased to more than 50%.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, all things considered are all merely illustrative, not the only.Institute
Have within the scope of the present invention or be included in the invention in the change being equal in the scope of the present invention.
Claims (10)
1. a kind of house refuse cooperates with burning sludge device, including：
Incinerator, the incinerator have burner hearth, and fire grate is located in the burner hearth, and house refuse is burned on the fire grate；
Burner, the burner is located in the burner hearth, the top of the fire grate, and the burner is used for dewatered sludge particle
It is distributed in the burner hearth of the incinerator, and dewatered sludge particle is sufficiently mixed with air.
2. house refuse according to claim 1 cooperates with burning sludge device, further include：
Drying machine, the drying machine are to dry the rotary roller dryer of sludge using heat smoke or utilize steam drying sludge
Rotary roller dryer.
3. house refuse according to claim 2 cooperates with burning sludge device, it is characterised in that：
The rotary roller dryer using heat smoke drying sludge includes roller, and the drum-inclined sets, is rotatable；Institute
The low side for stating roller is provided with smoke inlet and sludge outlet, and high end side is provided with exhanst gas outlet and sludge inlet；Described
Multiple dog-ear plates with gradient are provided on the inner wall of roller；
Preferably, blow-off valve is provided at the sludge outlet, to control the discharge of the dewatered sludge formed after drying；
Preferably, multiple dog-ear plates are uniformly distributed on the inner wall of the roller along the axial direction of the roller；Further
Preferably, multiple dog-ear plates are still uniformly distributed on the inner wall of the roller along the circumferential direction of the roller simultaneously；
Preferably, the gradient of multiple dog-ear plates is 30~60 °.
4. house refuse according to claim 2 cooperates with burning sludge device, it is characterised in that：
The rotary roller dryer using steam drying sludge includes roller, and the drum-inclined sets, is rotatable；It is described
Roller is double-layer structure, the sludge pipe of steam sleeve and internal layer including outer layer；The steam sleeve and the sludge pipe are mutual
Isolation；The low side of the roller is provided with steam inlet, and the steam inlet communicates with the steam sleeve, steam is sent
Enter in the steam sleeve；The high end side of the roller is provided with steam (vapor) outlet, the steam (vapor) outlet and the steam sleeve phase
It is logical, steam is discharged out of described steam sleeve；The high end side of the roller is additionally provided with sludge inlet, the sludge inlet
It is communicated with the sludge pipe, wet mud is sent into the sludge pipe；The low side of the roller is additionally provided with sludge outlet, institute
It states sludge outlet to communicate with the sludge pipe, the dewatered sludge formed after drying is discharged out of described sludge pipe；Institute
It states and multiple dog-ear plates with gradient is provided on the inner wall of sludge pipe；
Preferably, blow-off valve is additionally provided at the sludge outlet, to control the discharge of the dewatered sludge formed after drying；
Preferably, multiple dog-ear plates are uniformly distributed on the inner wall of the sludge pipe along the axial direction of the sludge pipe；Into
Preferably, multiple dog-ear plates are still uniform along the circumferential direction of the sludge pipe on the inner wall of the sludge pipe simultaneously for one step
Distribution；
Preferably, the gradient of multiple dog-ear plates is 30~60 °.
5. the house refuse collaboration burning sludge device according to any one of claim 2-4, further includes：
Grinder, the grinder are used to be ground processing to the sludge after drying machine drying process so that dry
Sludge is ground into dewatered sludge particle of the grain size between 1mm~10mm.
6. house refuse according to claim 5 cooperates with burning sludge device, further include：
Dewatered sludge storehouse, the dewatered sludge particle that the dewatered sludge storehouse is formed for storage after the grinder milled processed.
7. house refuse according to claim 6 cooperates with burning sludge device, further include：
Charging gear, the charging gear include screw(-type) feeder and feed screw；The dewatered sludge storehouse is arranged on the spiral shell
The top of the feed inlet of batcher is revolved, the discharge port of the screw(-type) feeder is connected with the feed inlet of the feed screw.
8. house refuse according to claim 7 cooperates with burning sludge device, it is characterised in that：
The discharge port of the feed screw is connected with the feed inlet of the burner, and is set at the feed inlet of the burner
There is compressed air inlet.
9. house refuse according to claim 1 cooperates with burning sludge device, it is characterised in that：
The stepped distribution of fire grate is divided into 3-5 sections and inclined arrangement, and every section has multiple stove pieces；
Multiple stove pieces along the incinerator feed inlet to the direction of slag notch by successively reduce height in the way of set
It puts, it is stepped so as to be formed.
10. house refuse according to claim 9 cooperates with burning sludge device, it is characterised in that：
The burner is provided with two rows, respectively first row burner and second row burner；
The first row burner and the second row burner are set side by side with multiple burners；Wherein, the first row
Burner is located at the upstream of the fire grate, and the second row burner is located at the downstream of the fire grate；
The house refuse collaboration burning sludge device further includes screening installation, dry dirt of the screening installation to being formed after grinding
Mud particle is screened, and the larger dewatered sludge particle of grain size is sent to the first row burner, by the smaller dry dirt of grain size
Mud particle is sent to the second row burner；
Preferably, the burner is arranged on the lower section of secondary air nozzle, and the overfire air port is arranged on the incinerator
The top of interior, the described fire grate of burner hearth.
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| CN201810079501.1A CN108224430B (en) | 2018-01-26 | 2018-01-26 | Household garbage collaborative sludge incineration device |
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| CN201810079501.1A CN108224430B (en) | 2018-01-26 | 2018-01-26 | Household garbage collaborative sludge incineration device |
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Cited By (2)
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| CN110925763A (en) * | 2019-12-13 | 2020-03-27 | 重庆科技学院 | Household garbage and sludge co-processing system and method |
| CN116753866A (en) * | 2023-08-22 | 2023-09-15 | 武汉科技大学 | Non-contact size measuring device and method for soil incineration repairing device |
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| CN116753866A (en) * | 2023-08-22 | 2023-09-15 | 武汉科技大学 | Non-contact size measuring device and method for soil incineration repairing device |
| CN116753866B (en) * | 2023-08-22 | 2023-11-14 | 武汉科技大学 | Non-contact size measuring device and method for soil incineration repairing device |
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| CN108224430B (en) | 2023-07-25 |
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