CN109081546A - Sludge air energy desiccation apparatus - Google Patents
Sludge air energy desiccation apparatus Download PDFInfo
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- CN109081546A CN109081546A CN201710442723.0A CN201710442723A CN109081546A CN 109081546 A CN109081546 A CN 109081546A CN 201710442723 A CN201710442723 A CN 201710442723A CN 109081546 A CN109081546 A CN 109081546A
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- sludge
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The present invention provides a kind of sludge air energy desiccation apparatus, including the mesh belt machine and air energy thermal pumping system to intercouple, at least three-layer network band are provided in the mesh belt machine, each mesh belt includes top net band and underlying network band；The outlet of first circulation wind, the outlet of first row wet wind and the outlet of second row wet wind are provided with above the top net band, first circulation wind exit is provided with first circulation blower, first row wet wind exit is provided with the first wet-emitting blower, and second row wet wind exit is provided with the second wet-emitting blower；It is provided with circulated air return air inlet above the underlying network band, first row wet wind return air inlet is provided with below the underlying network band；And the air energy thermal pumping system includes circulated air air duct, first row wet wind air duct and compressor set.Sludge air energy desiccation apparatus provided by the invention is high to sludge reduction degree, effect on moisture extraction is significant.
Description
Technical field
The invention belongs to sludge drying technique fields, are to be related to a kind of sludge air energy desiccation apparatus more specifically.
Background technique
Treatment of town sewage and sludge processing disposition includes sludge stabilizing, minimizing, innoxious and recycling requirement；Wherein
Sludge reduction is the core link of Treatment of Sludge, and main target reduces the moisture and current specific resistance to filtration in sludge
Key difficulties；The method of sludge reduction includes mechanical dehydration method, heat drying method etc.；During specific resistance to filtration,
There are the combinations of kinds of processes.Mechanical dehydration method includes chamber-type press filter, diaphragm filter press, belt filter press etc., wherein
Based on diaphragm filter press and belt filter press, since sewage sludge viscosity is higher after biochemical treatment, sludge contains after conventional filters pressing
Water rate about 80%；Heat drying method includes direct heat drying and indirect heat drying；Direct heat drying generallys use industrial furnace smoke
It directly contacts, thermal convection heat exchange；Indirectly drying passes through heating agent (steam or conduction oil) mediate contact；Oven drying method can be by sewage desiccation
To 10-40% moisture content, condition is provided for the innoxious and disposal of resources of sludge；The direct heat drying of sludge generally requires utilization
The flue gas of Industrial Stoves, exhaust gas volumn is larger, and the resource constraint by ambient conditions is larger, and the flue gas directly after heat exchange often contains
A certain amount of smelly property gas, deodorization difficulty are larger；The indirect heat drying heat consumption of sludge is higher, and 80% moisture content of sludge is reduced to 40%
Moisture content need to generally consume the saturated vapor (0.5Mpa, 153 DEG C) of 0.8-1t or so, and actual motion is costly.
With the raising of sewage treatment plant's treatment scale and processing depth, sludge yield constantly increases year by year；Original dirt
Mud processing disposal facility and method are not able to satisfy sludge treatment demand, and mainly show following aspect: (1) filter press technique is to mud decrement
Change degree is insufficient: moisture content is generally 80% or so after filter press technique dehydration, and sludge reduction degree is inadequate, dehydrated sludge volume
Still huge, it is not easy to final disposal；Middle pressure diaphragm filters pressing (operating pressure 15-18bar) filters pressing can reduce moisture percentage in sewage sludge
It to 60%, but needs to increase more conditioner (conditioning amount 30-50%/t DS), actually accomplishes mud decrement dehydration 40%；
(2) after by conventional conditioning, sludge calorific value is lower, generally below 600kcal/kg, is unfavorable for incineration disposal；Sludge after conditioning
It finally can only enter landfill yard disposition；(3) indirect drying method generally uses steam as heating agent, and one ton of sludge of desiccation usually requires
0.8-1.0t steam (0.6Mpa, 160 DEG C), processing cost is higher.In sewage treatment plants such as municipal administrations, often do not have steam money
Source, heat drying condition do not have.(3) traditional sludge drying machine generates high temperature with a large amount of energy, then sludge flood is done.And mistake
Cheng Dangzhong, many energy (heat) can be lost to neighbouring space, cause unnecessary waste.It is many unnecessary to take out of simultaneously
The problem of.Such as energy consumption is excessive, room temperature is excessively high.High-temperature process but will enable sludge generate unnecessary chemical action and generate a large amount of
Foul smell.
Summary of the invention
The purpose of the present invention is to provide a kind of sludge air energy desiccation apparatus, to solve existing sludge drying technique to dirt
Mud minimizing degree is insufficient, effect on moisture extraction is not significant and drying process in heat losses cause unnecessary waste, make simultaneously
At the technical problem that room temperature is excessively high.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of sludge air energy desiccation apparatus is provided, including
The mesh belt machine and air energy thermal pumping system to intercouple is provided at least three-layer network band in the mesh belt machine, and each mesh belt is equal
Including top net band and underlying network band；The outlet of first circulation wind, the outlet of first row wet wind are provided with above the top net band
It is exported with second row wet wind, first circulation wind exit is provided with first circulation blower, first row wet wind exit
It is provided with the first wet-emitting blower, second row wet wind exit is provided with the second wet-emitting blower；The top of the underlying network band
It is provided with circulated air return air inlet, first row wet wind return air inlet is provided with below the underlying network band；
The air energy thermal pumping system includes circulated air air duct, first row wet wind air duct and compressor set, and described first follows
The outlet of ring wind is connected to by the circulated air air duct with the circulated air return air inlet, the first row wet wind outlet and described second
The outlet of hydrofuge wind is connected to by first row wet wind air duct with the first row wet wind return air inlet；The compressor set includes
It is steamed by sequentially connected first compressor of the first loop pipeline, the first condenser, first filter, the first expansion valve, first
Send out device and the first separator and by sequentially connected second compressor of the second loop pipeline, the second condenser, the second filtering
Device, the second expansion valve, the second evaporator and the second separator, first evaporator and second evaporator are disposed adjacent,
And heat exchanger is provided between first condenser and first evaporator.
Further, the outlet of second circulation wind, third hydrofuge wind outlet and the 4th are additionally provided with above the top net band
The outlet of hydrofuge wind, second circulation wind exit are provided with second circulation blower, and the third hydrofuge wind exit is provided with
Third wet-emitting blower, the 4th hydrofuge wind exit are provided with the 4th wet-emitting blower, are provided with below the underlying network band
Second row wet wind return air inlet；The air energy thermal pumping system further includes second row wet wind air duct, third hydrofuge wind outlet and
The 4th hydrofuge wind outlet is connected to by second row wet wind air duct with the second row wet wind return air inlet, and described first
Circulated air outlet and second circulation wind outlet are connected to by the circulated air air duct with the circulated air return air inlet.
Further, the compressor set further includes the cold doubtful device of third, second compressor and second condenser
Between the second loop pipeline on be provided with regulating valve, the regulating valve, the third condenser and second filtering
Device is connected by bypass line.
Further, third filter is provided in the circulated air air duct；First condenser is set to the circulation
In air duct, and be located at the third filter wind direction it is lower to；And/or
The 4th filter, the 5th filter and third evaporation are disposed with along wind direction in first row wet wind air duct
Device；The heat exchanger and the second condenser are set in first row wet wind air duct, and the heat exchanger and the second condensation
Device is respectively positioned between the 5th filter and the third evaporator.
Further, the third filter and the 4th filter are board-like cleanable filter, the 5th mistake
Filter is bag filter.
Further, shutter folding aerofoil and ventilating board are additionally provided in the mesh belt machine, and the shutter rolls over aerofoil
At circulated air return air inlet, and the ventilating board is tilting in shutter folding aerofoil bottom end.
Further, the bottom of the underlying network band is provided with the discharging for sludge after desiccation to be discharged to the mesh belt machine
Device.
Further, the first sludge storage that sludge slitting molding machine is connected with for storing to dewatered sludge is set
Standby, the device for discharging is connected with the second sludge for storing sludge after the desiccation and stores equipment.
Further, the first circulation blower and the second circulation blower are axial flow blower, first hydrofuge
Blower, second wet-emitting blower, the third wet-emitting blower and the 4th wet-emitting blower are centrifugal blower.
Further, arch breaking apparatus for preventing sludge from building bridge is provided on sludge slitting molding machine and for examining
Survey the level-sensing device of mud height variation.
Sludge air energy desiccation apparatus provided by the invention has the advantages that 1) present invention is one kind compared with the prior art
Novel air energy mud decrement drying equipment, it is aqueous after desiccation suitable for the depth desiccation of dewatered sludge, deep dehydration sludge
Rate can reduce to 10~40%, and final moisture content is adjustable.2) present invention is not required to compared to the mud decrement desiccation of other forms
The secondary conditioning for carrying out dewatered sludge is quenched, does not also depend on external heat source condition, but relies on the desiccation of electric energy realization sludge,
It is highly suitable for cities and towns and Industrial Waste Water Treatments brand-name computer tool dewatered sludge minimizing processing.3) present invention is integrated sludge air
The dry makeup of energy is standby, which is mainly made of mesh belt machine and heat pump system, is a kind of new type low temperature desiccation equipment, desiccation temperature is about
65~70 DEG C, heated dry air is converted by low-quality humid air by heat pump cycle acting, heated dry air is recyclable to enter mesh belt
In machine, recycle；Energy consumption index reaches 3.5kg/kwh or more.4) present invention is different from present using more thermal method and medicine
Agent improves hardening and tempering method, and after the equipment is to mud decrement, sludge calorific value is higher.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of mesh belt machine in sludge air energy desiccation apparatus provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of compressor set in sludge air energy desiccation apparatus provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram in circulated air air duct in sludge air energy desiccation apparatus provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram in hydrofuge wind air duct in sludge air energy desiccation apparatus provided in an embodiment of the present invention；
Fig. 5 is mesh belt machine transverse cross-sectional view in sludge air energy desiccation apparatus provided in an embodiment of the present invention；
Fig. 6 is the overall structure of mesh belt machine and outer attached device in sludge air energy desiccation apparatus provided in an embodiment of the present invention
Schematic diagram；
Wherein, each appended drawing reference in figure:
1: the first compressor；2: the first condensers；3: first filter；4: the first expansion valves；5: the first evaporators；6: the
One separator；7: the second compressors；8: the second condensers；9: the second filters；10: the second expansion valves；11: the second evaporators；
12: the second separators；13: the first loop pipelines；14: the second loop pipelines；15: heat exchanger；16: heat conducting pipe；17: third is cold
Doubt device；18: regulating valve；19: bypass line；20: sludge cuts molding machine；21: top net band；22: underlying network band；23: the first
Circulated air outlet；24: the outlet of first row wet wind；25: the outlet of second row wet wind；26: first circulation blower；27: first row wet wind
Machine；28: the second wet-emitting blowers；29: circulated air return air inlet；30: first row wet wind return air inlet；31: the outlet of second circulation wind；32:
The outlet of third hydrofuge wind；The outlet of 33: the four hydrofuge wind；34: second circulation blower；35: third wet-emitting blower；36: the four hydrofuges
Blower；37: second row wet wind return air inlet；38: third filter；39: the four filters；40: the five filters；41: third is steamed
Send out device；42: shutter rolls over aerofoil；43: ventilating board；44: device for discharging；45: the first sludge store equipment；46: the second sludge are deposited
Store up equipment.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that it can directly on the other element when element is referred to as " being provided with " another element
Or indirectly on another element.When an element is known as " connected " another element, it, which can be, is directly connected to
To another element or it is indirectly connected on another element.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.
Also referring to Fig. 1-Fig. 4, now sludge air energy desiccation apparatus provided in an embodiment of the present invention is illustrated.It should
Sludge air energy desiccation apparatus includes the mesh belt machine and air energy thermal pumping system to intercouple, and mesh belt machine top is provided with sludge and cuts
Molding machine 20 is provided at least three-layer network band in mesh belt machine, which includes top net band 21 and underlying network band 22, top layer
The top of mesh belt 21 is provided with first circulation wind outlet 23, first row wet wind outlet 24 and second row wet wind outlet 25, and first follows
First circulation blower 26 is provided at ring wind outlet 23, first row wet wind exports and is provided with the first wet-emitting blower 27 at 24, and second
The second wet-emitting blower 28 is provided at hydrofuge wind outlet 25；The top of underlying network band 22 is provided with circulated air return air inlet 29, bottom
The lower section of mesh belt 22 is provided with first row wet wind return air inlet 30；Air energy thermal pumping system includes circulated air air duct (Fig. 3), first row
Wet wind air duct (Fig. 4) and compressor set (Fig. 5), first circulation wind outlet 23 will be with circulated air return air inlet 29 by circulated air air duct
Connection, first row wet wind outlet 24 and second row wet wind outlet 25 will be with first row wet wind return air by first row wet wind air duct
Mouth 30 is connected to；The compressor set include: by sequentially connected first compressor 1 of the first loop pipeline 13, the first condenser 2,
First filter 3, the first expansion valve 4, the first evaporator 5 and the first separator 6 and sequentially connected by the second loop pipeline 14
The second compressor 7, the second condenser 8, the second filter 9, the second expansion valve 10, the second evaporator 11 and the second separator connect
12；First evaporator 5 and the second evaporator 11 are disposed adjacent, and are provided with hot friendship between the first condenser 2 and the first evaporator 5
Parallel operation 15.
Sludge air energy desiccation apparatus provided by the invention has the advantages that 1) present invention is one kind compared with the prior art
Novel air energy mud decrement drying equipment, it is aqueous after desiccation suitable for the depth desiccation of dewatered sludge, deep dehydration sludge
Rate can reduce to 10~40%, and final moisture content is adjustable.2) present invention is not required to compared to the mud decrement desiccation of other forms
The secondary conditioning for carrying out dewatered sludge is quenched, does not also depend on external heat source condition, but relies on the desiccation of electric energy realization sludge,
It is highly suitable for cities and towns and Industrial Waste Water Treatments brand-name computer tool dewatered sludge minimizing processing.3) present invention is integrated sludge air
The dry makeup of energy is standby, which is mainly made of mesh belt machine and heat pump system, is a kind of new type low temperature desiccation equipment, desiccation temperature is about
65~70 DEG C, heated dry air is converted by low-quality humid air by heat pump cycle acting, heated dry air is recyclable to enter mesh belt
In machine, recycle；Energy consumption index reaches 3.5kg/kwh or more.4) present invention is different from present using more thermal method and medicine
Agent improves hardening and tempering method, and after this law mud decrement, sludge calorific value is higher.
Further, a kind of specific embodiment as sludge air energy desiccation apparatus provided by the invention, top net
Top with 21 is additionally provided with second circulation wind outlet 31, the outlet 32 of third hydrofuge wind and the 4th hydrofuge wind outlet 33, and second follows
Second circulation blower 34 is provided at ring wind outlet 31, third hydrofuge wind goes out at 32 mouthfuls to be provided with third wet-emitting blower 35, and the 4th
It is provided with the 4th wet-emitting blower 36 at hydrofuge wind outlet 33, the lower section of underlying network band 22 is provided with second row wet wind return air inlet 37；
Air energy thermal pumping system further includes second row wet wind air duct, and the outlet 32 of third hydrofuge wind and the 4th hydrofuge wind outlet 34 are by the
Two hydrofuge wind air ducts are connected to second row wet wind return air inlet 37, and first circulation wind outlet 23 and second circulation wind outlet 31 pass through
Circulated air air duct will be connected to circulated air return air inlet 29.In this way, two hydrofuge wind air ducts and a circulated air Duct design, more have
It is adjusted conducive to hot wind in mesh belt machine, can further improve the desiccation effect of sludge.
First circulation blower 26 and second circulation blower 34 are axial flow blower, the first wet-emitting blower 27, second row wet wind
Machine 28, third wet-emitting blower 25 and the 4th wet-emitting blower 26 are centrifugal blower.Centrifugal blower passes through humid air in mesh belt machine
Air duct is sent into heat pump unit；Centrifugal blower is stainless steel material, and frequency conversion drive can adjust wind according to thermal equilibrium state in system
Amount.Circulating fan is axial flow blower, and the big wind pressure of air quantity is small, can further improve the humidity of air in mesh belt machine, increases air pair
Stream, axial flow blower are high temperature resistant type blower, all-aluminium construction.
Further, a kind of specific embodiment as sludge air energy desiccation apparatus provided by the invention, compressor
Group further includes third condenser 17, is provided with adjusting on the second loop pipeline 14 between the second compressor 7 and the second condenser 8
Valve 18, regulating valve 18, third condenser 17 and the second filter 9 are connected by bypass line 19.Waste heat passes through regulating valve
18 control, into third condenser 17,17 in condenser in lead to cooling water, by the portion, water waste heat is taken away.
Compressor unit system passes through modular arrangements, compressor, condenser, filter, expansion valve, the evaporator of two modules
And separator, and act synergistically with heat exchanger, hot wind is provided for air energy drying equipment.The compressor set pipeline is copper
Refrigerant is walked in pipe, inside, and refrigerant is preferably high temperature refrigerant, including but not limited to R134a, R410A, xp140 etc..
Further, a kind of specific embodiment as sludge air energy desiccation apparatus provided by the invention, circulated air
Third filter 38 (shown in Fig. 3) in air duct；First condenser 2 is set in circulation air path, and is located at the wind of third filter 38
To it is lower to.Circulated air is sent into air energy thermal pump assembly by axial flow blower, is first passed around third filter 38, is then passed through
First condenser 2.First condenser 2 selects first-stage condenser, is microchannel form condenser, can heat the circulated air of Wind Volume.
The 4th filter 39, the 5th filter 40 and third evaporation are disposed with along wind direction (shown in Fig. 4) in first row wet wind air duct
Device 41；Heat exchanger 15 and the second condenser 8 are set in first row wet wind air duct, and heat exchanger 15 and the second condenser
8 are respectively positioned between the 5th filter 40 and third evaporator 41.Preferably, third filter 38 and the 4th filter 40 are board-like
Cleanable filter, the 5th filter 41 are bag filter.
Board-like cleanable filter frame is aluminum alloy frame, and polyethylene terephthalate is fire-retardant, the powder in primary filtration air
Dirt.Bag filter is used for the double purification of air, reduces the influence to subsequent heat exchanger, aluminum alloy frame, synthetic fibers or glass
Fiber material.Heat exchanger 15 is economic benefits and social benefits aluminium foil heat exchanger, is made of distributary plate heat exchanger, can increase gas-contact area,
Heat transfer effect is improved, main material is hydrophilic aluminium foil, and heat exchanger fin appearance has done the stamping disposition of helical corrugation of augmentation of heat transfer,
Heat transfer area is greatly increased, the heat transmission of heat exchanging core is promoted.Third evaporator 41 be pipe finned heat exchanger, ambrose alloy tubing and
Jinsui River film aluminum fin-stock structure is condensed for humid air to cool down, and the moisture in humid air forms liquid water and is discharged from device bottom,
Then the humid air come out from third evaporator 41 passes through economic benefits and social benefits aluminium foil heat exchanger, eventually pass through the heating of the second condenser 8, lead to
Hydrofuge air return air inlet is crossed to send to mesh belt motor spindle.Second condenser 8 is secondary condenser, is the heat exchanger of microchannel, full aluminium
Structure.By being designed in this way, combine heat pump unit, circulation air return air in mesh belt machine and hydrofuge air return air temperature can be made about
It is 65~70 DEG C, circulation air exhaust temperature and about 55 DEG C of hydrofuge air exhaust temperature.
Further, a kind of specific embodiment as sludge air energy desiccation apparatus provided by the invention, such as Fig. 5 institute
Show, shutter folding aerofoil 42 and ventilating board 43 is additionally provided in mesh belt machine, and shutter folding aerofoil 42 is located at circulated air return air inlet
At 29, ventilating board 43 is tilting to roll over 42 bottom end of aerofoil in shutter.Shutter folding aerofoil 42 prevent issuable gas turbulence with
And the problem of fugitive dust, the orifice plate of aerofoil 42 and 2 is rolled over by multilayer shutter, for wind field in tissue mesh belt machine.Shutter rolls over aerofoil
42 and 2 orifice plates are stainless steel material.
Further, a kind of specific embodiment as sludge air energy desiccation apparatus provided by the invention, underlying network
Bottom with 22 is provided with the device for discharging 44 of sludge discharge mesh belt machine after desiccation.Device for discharging 44 is variable-frequency motor driving,
For material after desiccation to be discharged, the sealing of system is effectively realized, gas and heat loss are prevented.Preferably, device for discharging
44 can be star-like device for discharging, further increase unloading efficiency.
Further, a kind of specific embodiment as sludge air energy desiccation apparatus provided by the invention, such as Fig. 6 institute
Show, sludge slitting molding machine 20 is connected with for storing the first sludge storage equipment 45 to dewatered sludge, and device for discharging 44 connects
It is connected to the second sludge for storing sludge after desiccation and stores equipment 46.Town sewage plant or Industrial Waste Water Treatments factory mechanism filter-pressing
Or centrifuge exports sludge, is delivered to the first sludge by conveying device and stores equipment 45, which is adjusted for caching sludge
Flow.First sludge stores the mating level-sensing device of sludge storage bin of equipment 45 and prevents the facilities such as sludge bridge formation.The storage of first sludge
Sludge in equipment 45 is delivered in the mesh belt machine of integrated air energy desiccation apparatus by screw pump (cuts molding machine from sludge
20 enter), it can also be conveyed by shaftless screw.Dewatered sludge is conveyed by tilting screw, can be fed directly to packaging bag bag
Dress.
Meanwhile mesh belt settable 3 layers or Multilayer Network band in mesh belt machine, mesh belt main structure be metal bracelet mesh belt, every layer
Mesh belt is by a motor driven, and motor frequency conversion is adjustable, and mesh belt form preferably uses herringbone spiral hinge form, according to mesh belt
The settable carrying roller of length.Pave PTFE mesh belt above metal mesh belt, and pore size prevents sludge blanking, at the same ensure sludge with
Hot wind has more heat transfer area.
Further, a kind of specific embodiment as sludge air energy desiccation apparatus provided by the invention, sludge are cut
The arch breaking apparatus for preventing sludge from building bridge and the level-sensing device (figure for detecting mud height variation are provided on molding machine 20
It does not mark).Slitting molding machine is roller pair structure, by motor driven, by the molding of sludge slitting, is spread in uniform on mesh belt.
In short, mesh belt machine and air energy thermal pumping system are the integration apparatus being highly coupled.Low temperature caused by mesh belt machine
High humidity vapor provides energy for heat pump system, after being exchanged heat by heat pump against Carnot cycle and multistage echelon, is converted into relatively high
The dry air of warm low humidity is again introduced into mesh belt machine.Sludge can do makeup by Integral air and postpone, residence time about 2h,
The moisture content of sludge is further reduced to 30% or less.Meanwhile also settable PLC full automatic working, central monitoring can be made, operated
It is convenient.Make some modifications by the operating parameter to PLC, so that it may be directed to sludge quality and drying condition, conditioning of mud is in net
Residence time in band machine, to improve efficiency.Due to using low temperature desiccation, system dust is few, and the condensation waste water COD that desiccation generates is low
In 50mg/L.The matching used process flow of the present apparatus is short, and system failure rate is low；Steam desiccation is not utilized, convenient in sewage plant
Deng application.In the present apparatus, about 65~70 DEG C of sludge drying temperature in mesh belt machine, after moisture is evaporated in sludge, temperature
It reduces, humid air water capacity improves, and height is risen again after heat pump system containing humid air to 65~70 DEG C again, and air gas
It recycles, does not discharge foul smell.
Embodiment
By taking certain urban wastewater treatment firm as an example (10,000 ton/days of sewage quantity), pass through the moisture percentage in sewage sludge of centrifugal dehydrator outlet
In 80% or so (sludge yield about 6t/d), sludge is sent to sludge by conveyor screw and is cached in feed bin, sludge storage bin volume
12m3, keep 2d dischargeable capacity.Mating shaftless screw prevents sludge in storehouse bridging in feed bin, is delivered to air by sludge pump
In energy drying equipment.
Air energy drying equipment is continuous operation mode, mainly includes mesh belt machine part and heat pump set system.In mesh belt
Setting sludge cuts molding machine at the top of machine, and slitting molding machine is twin shaft to roll form, sludge is cut to 6~8mm, in cutting machine
Top arranges that arch breaking apparatus and level-sensing device, level-sensing device are connected with sludge caching feed bin PCL system.Mesh belt machine part is mainly framed
The compositions, thermal insulating material such as frame, three-layer network band, circulating fan, wet-emitting blower, circulated air entrance, circulated air outlet, hydrofuge wind return air inlet
The composition such as material.Frame structure material is stainless steel square tube composition, is erected on the basis of galvanizing bath steel, equipment size about LBH=6m
×1.2m×3m.Three-layer network band is metal herringbone mesh belt, is bonded PTFE film on mesh belt, with fixation with steel wire, mesh belt passes through electricity
Machine frequency conversion drive, sludge successively fall two layers and three-layer network band from upper wire band, and it is stainless to lay blanking in third layer mesh belt bottom
Steel inclined plate is exported sludge by star-shaped discharge valve.Centrifugal blower is laid at the top of mesh belt machine, quantity 4, humid air is carried
To hydrofuge wind air duct, centrifugal blower fan blade wheel is stainless steel material, and frequency conversion is adjustable；In mesh belt machine side top, circulating fan is laid,
Air is sent to circulated air air duct, circulating fan is abundant for axis stream, all-aluminium construction, high temperature resistant.Hydrofuge wind and circulated air ratio are about
1:6~1:10 can pass through fan frequency conversion and operation quantity control.In circulated air air duct, air is added again by first-stage condenser
Heat, first-stage condenser are microchannel structure, are then recycled between underlying network band and two layers of mesh belt, maintain the height of system containing wet
Amount.In hydrofuge wind air duct, humid air is successively by board-like cleanable filter, belt filter, economic benefits and social benefits cross-flow heat exchanger, steaming
Device is sent out, then after distributary device backheat, then result secondary condenser is back to underlying network band lower air, for drying bottom
Sludge on mesh belt.Make isothermal holding outside mesh belt machine, thermal insulation material is cold storage plate, thickness 8mm, at mesh belt motor spindle and top
Same processing.
Heat pump unit is coupled with circulated air air duct and hydrofuge wind air duct, is connected each other closely.Heat pump unit modular arrangements,
The heat pump unit of mating 2 modules in present case.Compressor successively with condenser, filter, throttle valve, evaporator, separate
Device is connected, and refrigerant uses R134a or XP140 refrigerant, and evaporating temperature sets 5bar, and condensation temperature sets 20bar.Refrigerant
The heat release within the condenser after compressor compresses, heats most circulation and hydrofuge wind, and extra heat passes through external water
Cooling system is drained, and selected condenser is microchannel structure, and the year-on-year pipe fin of efficiency improves 30%；In evaporator section, refrigeration
Device absorbs heat in air and evaporates, while aerial condensate moisture is got off, and forms liquid water, is discharged by pipeline, by two groups
Evaporator series improve air setting effect, and selected evaporator is that pipe is finned, and Jinsui River plated film, hydrophobicity is good, draining
Fastly.Selected compressor is scroll compressor 7HP.The installed power of system is 50kw.Coefficient of energy dissipation SMER reaches
3.5kg/kwh.Heat pump unit accesses PCL control system, according to the unlatching of mesh belt machine return air temperature and humidity regulation compressor, outside
Set water-cooled condenser and mesh belt machine operating parameter.Mesh belt machine and heat pump system integral heat insulation, heat preserving mode polyurethane cold-storage board,
Insulation thickness 8mm, protective layer are wire drawing stainless steel material, appearance looks elegant.Sludge is handled by slitting, and mud extraction is strip sludge,
It is filled in packaging bag by conveyor screw.Due to using low temperature desiccation mode, auxiliary conditioning medicament is not added, calorific value and shale are protected
It deposits preferably, can be used as the final disposals such as RDF fuel.
Through the invention after equipment processing, moisture percentage in sewage sludge can be reduced to 20% hereinafter, mud decrement degree reaches 75%
Left and right；Integrated air energy desiccation occupation area of equipment is small, ton mud occupied area about 4m2。
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of sludge air energy desiccation apparatus, including the mesh belt machine and air energy thermal pumping system to intercouple, the mesh belt machine
Top is provided with sludge slitting molding machine, is provided at least three-layer network band in the mesh belt machine, each mesh belt includes top layer
Mesh belt and underlying network band；It is characterized in that, being provided with the outlet of first circulation wind above the top net band, first row wet wind goes out
Mouth and the outlet of second row wet wind, first circulation wind exit are provided with first circulation blower, the first row wet wind outlet
Place is provided with the first wet-emitting blower, and second row wet wind exit is provided with the second wet-emitting blower；The underlying network band it is upper
Side is provided with circulated air return air inlet, and first row wet wind return air inlet is provided with below the underlying network band；
The air energy thermal pumping system includes circulated air air duct, first row wet wind air duct and compressor set, the first circulation wind
Outlet is connected to by the circulated air air duct with the circulated air return air inlet, the first row wet wind outlet and second hydrofuge
Wind outlet is connected to by first row wet wind air duct with the first row wet wind return air inlet；The compressor set includes passing through
Sequentially connected first compressor of first loop pipeline, the first condenser, first filter, the first expansion valve, the first evaporator
With the first separator and pass through sequentially connected second compressor of the second loop pipeline, the second condenser, the second filter, the
Two expansion valves, the second evaporator and the second separator, first evaporator and second evaporator are disposed adjacent, and described
Heat exchanger is provided between first condenser and first evaporator.
2. sludge air energy desiccation apparatus as described in claim 1, which is characterized in that also set up above the top net band
There are the outlet of second circulation wind, the outlet of third hydrofuge wind and the outlet of the 4th hydrofuge wind, second circulation wind exit to be provided with the
Two circulating fans, the third hydrofuge wind exit are provided with third wet-emitting blower, and the 4th hydrofuge wind exit is provided with
4th wet-emitting blower is provided with second row wet wind return air inlet below the underlying network band；The air energy thermal pumping system also wraps
Second row wet wind air duct is included, the third hydrofuge wind outlet and the 4th hydrofuge wind outlet pass through the second row wet wind wind
Road is connected to the second row wet wind return air inlet, and the first circulation wind outlet and second circulation wind outlet are by described
Circulated air air duct is connected to the circulated air return air inlet.
3. sludge air energy desiccation apparatus as described in claim 1, which is characterized in that the compressor set further includes that third is cold
Device is doubted, is provided with regulating valve, and institute on the second loop pipeline between second compressor and second condenser
Regulating valve, the third condenser is stated to be connected with second filter by bypass line.
4. sludge air energy desiccation apparatus as described in claim 1, which is characterized in that be provided in the circulated air air duct
Three filters；First condenser be set to the circulation air path in and be located at the third filter wind direction it is lower to；With/
Or
The 4th filter, the 5th filter and third evaporator are disposed with along wind direction in first row wet wind air duct；Institute
It states heat exchanger and the second condenser is set in first row wet wind air duct, and the heat exchanger and the equal position of the second condenser
Between the 5th filter and the third evaporator.
5. sludge air energy desiccation apparatus as claimed in claim 4, which is characterized in that the third filter and the described 4th
Filter is board-like cleanable filter, and the 5th filter is bag filter.
6. sludge air energy desiccation apparatus as described in claim 1, which is characterized in that be additionally provided with blinds in the mesh belt machine
Window rolls over aerofoil and ventilating board, and shutter folding aerofoil is located at circulated air return air inlet, and the ventilating board is tilting described
Shutter rolls over aerofoil bottom end.
7. sludge air energy desiccation apparatus as claimed in any one of claims 1 to 6, which is characterized in that the bottom of the underlying network band
Portion is provided with the device for discharging for sludge after desiccation to be discharged to the mesh belt machine.
8. sludge air energy desiccation apparatus as claimed in claim 7, which is characterized in that the sludge slitting molding machine is connected with
The first sludge for storing to dewatered sludge stores equipment, and the device for discharging is connected with for storing sludge after the desiccation
The second sludge store equipment.
9. sludge air energy desiccation apparatus as claimed in claim 2, which is characterized in that the first circulation blower and described
Two circulating fans are axial flow blower, first wet-emitting blower, second wet-emitting blower, the third wet-emitting blower and institute
Stating the 4th wet-emitting blower is centrifugal blower.
10. sludge air energy desiccation apparatus as claimed in any one of claims 1 to 6, which is characterized in that sludge slitting at
The arch breaking apparatus for preventing sludge from building bridge and the level-sensing device for detecting mud height variation are provided on type machine.
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| CN201710442723.0A CN109081546A (en) | 2017-06-13 | 2017-06-13 | Sludge air energy desiccation apparatus |
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| CN201710442723.0A CN109081546A (en) | 2017-06-13 | 2017-06-13 | Sludge air energy desiccation apparatus |
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