CN209292196U - Sludge joint disposal system - Google Patents
Sludge joint disposal system Download PDFInfo
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- CN209292196U CN209292196U CN201920831184.4U CN201920831184U CN209292196U CN 209292196 U CN209292196 U CN 209292196U CN 201920831184 U CN201920831184 U CN 201920831184U CN 209292196 U CN209292196 U CN 209292196U
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Abstract
The utility model discloses sludge joint disposal systems.The sludge joint disposal system includes: drying device；Gas-liquid separation device has dry cold flue gas entrance, the first mixed gas entrance, separated gas outlet, water out and offgas outlet；First destructive distillation device has the first sludge inlet, the first destructive distillation hot fume entrance, the first sludge outlet, the outlet of the first destructive distillation cold flue gas and the second mixed gas outlet；Second destructive distillation device has the second sludge inlet, the second destructive distillation hot fume entrance, the outlet of the second destructive distillation cold flue gas and pyrolytic carbon outlet；Mixed gas reclamation set has the second mixed gas entrance, steam outlet and pyrolysis gas outlet.The sludge joint disposal system can carry out two-stage destructive distillation processing after pending mud is dry, to obtain the retorted product of high-quality.Meanwhile the high-temperature medium generated in system can carry out reasonable distribution, to improve system thermal efficiency, reduce energy consumption.
Description
Technical field
The utility model relates to the harmless treatments of sludge and application technology as the second resource field, specifically, this is practical new
Type is related to sludge joint disposal system.
Background technique
Pyrolyzing sludge is to decompose the organic matter in sludge under anoxybiotic atmosphere and generate pyrolytic carbon, pyrolysis gas and micro coke
The process of oil has innoxious and thorough reduction, environmental-friendly, the advantages such as recycling degree height.The heat that pyrolyzing sludge obtains
Solving charcoal (or charcoal) has more micropore and specific surface area, simultaneously containing higher fixed carbon content and N, P abundant,
The nutrients such as K have effects that good water conservation, sustained release and increase soil fertility, and what soil resource utilized has a high potential.But
It is that the high water content in sludge causes the energy consumption of pyrolyzing sludge process excessively high, pyrolyzing sludge charcoal is used for the work of soil remediation
Skill process also needs to be further improved.
Meanwhile the tar and water separation difficulty of pyrolyzing sludge generation, cost recovery is high, can be right if being directly discharged into sewage conduct
Subsequent sewage treatment generates large effect, especially in embrane method sewage treatment process, is easy to damage film.Cause
This, existing Treatment of Sludge means still have much room for improvement.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality
It is the system for proposing sludge joint disposal with a novel purpose.The sludge joint disposal system can be dry in pending mud
Two-stage destructive distillation processing is carried out after dry, to obtain the retorted product of high-quality.Meanwhile the high-temperature medium generated in system can carry out
Reasonable distribution, to improve system thermal efficiency, reduce energy consumption.
In the one aspect of the utility model, the utility model proposes a kind of sludge joint disposal systems.According to this reality
With novel embodiment, which includes:
Drying device, the drying device have feed inlet, steam entry, dry hot fume entrance, discharge port, first
Mixed gas outlet and dry cold flue gas outlet, the drying device includes the heating chamber being isolated from each other and material chamber；
Gas-liquid separation device, the gas-liquid separation device have dry cold flue gas entrance, the first mixed gas entrance, separation
Gas vent, water out and offgas outlet, the dry cold flue gas entrance are connected with the dry cold flue gas outlet, and described first
Mixed gas entrance is connected with first mixed gas outlet, the separated gas outlet and the dry hot fume entrance phase
Even；
First destructive distillation device, first destructive distillation device have the first sludge inlet, the first destructive distillation hot fume entrance, first
Sludge outlet, the outlet of the first destructive distillation cold flue gas and the second mixed gas outlet, first sludge inlet and the discharge port phase
Even, the first destructive distillation cold flue gas outlet is connected with the dry hot fume entrance；
Second destructive distillation device, second destructive distillation device have the second sludge inlet, the second destructive distillation hot fume entrance, second
The outlet of destructive distillation cold flue gas and pyrolytic carbon outlet, second sludge inlet are connected with first sludge outlet, and described second is dry
Cold flue gas outlet is evaporated to be connected with the first destructive distillation hot fume entrance；
Mixed gas reclamation set, the mixed gas reclamation set have the second mixed gas entrance, steam outlet
And pyrolysis gas outlet, the second mixed gas entrance are connected with the second mixed gas outlet, the steam outlet with it is described
Steam entry is connected.
It in vapor and is done according to the sludge joint disposal system of the utility model embodiment first with drying device
Pending mud is dried under the action of scorching flue gas, (including water steams for sludge after being dried, the first mixed gas
Gas, dry flue gas generated etc.) and dry cold flue gas；Wherein, the first mixed gas and dry cold flue gas enter gas-liquid separation dress
Carry out gas-liquid separation is set, water, separation gas and tail gas are obtained after heat exchange, separation gas can return in drying device for treating place
Reason sludge is dried.Sludge enters the first destructive distillation device progress pre-distillation after drying, at high temperature further dehydration, and occurs
Part destructive distillation obtains partial thermal decomposition oil gas and pre-distillation sludge, and in the first destructive distillation device, the pyrolysis oil gas that pre-distillation generates can
Inversely to be contacted with sludge, and cools down during transportation, tar is promoted to be precipitated and be adhered to Sludge Surface.It is subsequent, pre-distillation
Sludge enters the second destructive distillation device further progress destructive distillation, and the tar generation second pyrolysis of sludge and its surface adhesion obtains
Pyrolytic carbon and the extremely low pyrolysis gas of tar content.Meanwhile pyrolysis gas can via the second destructive distillation device the second sludge inlet and
The discharge port of first destructive distillation device is back in the first destructive distillation device, is inversely contacted with the sludge generation in the first destructive distillation device,
Promote the precipitation of tar in sludge.On the other hand, the first destructive distillation device discharge the second mixed gas (mainly include vapor,
It is back to the pyrolysis gas etc. of the first destructive distillation device) enter the isolated vapor of mixed gas reclamation set and pyrolysis gas, wherein
Vapor can return in drying device and pending mud is dried.The sludge joint disposal of the utility model as a result,
System efficiently solves the oil water mixture that energy consumption in existing sludge treatment technique is high, generates and is difficult to the problems such as handling, meanwhile, it is
The high-temperature medium generated in system can carry out reasonable distribution, and vapor latent heat losses are not present in whole system, to improve system heat
Efficiency reduces energy consumption.
Optional, the sludge joint disposal system further comprises: burner, and the burner has pyrolysis gas
Entrance, First air entrance, circulated air entrance, fuel inlet and high-temperature flue gas outlet, the pyrolysis gas entrance and the pyrolysis gas
Outlet is connected, and the outlet of the circulated air entrance and the first destructive distillation cold flue gas is connected, the high-temperature flue gas outlet and described the
Two destructive distillation hot fume entrances are connected.
Optional, the sludge joint disposal system further comprises: activated carbon adsorption device, the activated carbon adsorption dress
It is set between the second mixed gas entrance and second mixed gas outlet, and the feed inlet with the drying device
It is connected.
Optional, the sludge joint disposal system further comprises: vapor regulator, the vapor pressure regulation dress
It is set between the steam outlet and the steam entry.
Optional, the sludge joint disposal system further comprises: exhaust gas processing device, the exhaust gas processing device with
The offgas outlet is connected.
Optional, the sludge joint disposal system further comprises: pyrolytic carbon water cooling plant, the pyrolytic carbon water cooling dress
It sets and is connected with pyrolytic carbon outlet.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the structural schematic diagram according to the sludge joint disposal system of the utility model one embodiment；
Fig. 2 is the structural schematic diagram according to the sludge joint disposal system of the utility model further embodiment.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
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 at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the one aspect of the utility model, the utility model proposes a kind of sludge joint disposal systems.According to this reality
With novel embodiment, with reference to Fig. 1, which includes: drying device 100, gas-liquid separation device 200,
One destructive distillation device 310, the second destructive distillation device 320 and mixed gas reclamation set 400.The sludge joint disposal system can be wait locate
Two-stage destructive distillation processing is carried out after managing drying sludge, to obtain the retorted product of high-quality.Meanwhile the high temperature generated in system is situated between
Matter can carry out reasonable distribution, to improve system thermal efficiency, reduce energy consumption.
It is further detailed to being carried out according to the sludge joint disposal system of the utility model embodiment below with reference to Fig. 1~2
Description.
Embodiment according to the present utility model, drying device 100 have feed inlet 101, steam entry 102, dry heat
Smoke inlet 103, discharge port 104, the first mixed gas outlet 105 and dry cold flue gas outlet 106, drying device 100 include
The heating chamber (attached to be not shown in the figure) and material chamber (attached to be not shown in the figure) being isolated from each other, heating chamber is set in material cavity
On room.Drying device 100 is suitable for for pending mud being dried, and sludge after dry, the first mixed gas and does
Dry cold flue gas.The specific type of pending mud is not particularly restricted, such as can be municipal sludge etc..In drying process
Heating method can be using directly heating in such a way that indirect heating combines.Specifically, directly heat mode can pass through by
The obtained hot fume that generates or exchange heat in subsequent technique is passed through (i.e. material cavity in drying device furnace chamber via dry hot fume entrance
It is indoor) directly contact progress with pending mud, indirect heating manner can use vapor in ring system and axis is (such as subsequent
Through gas-liquid separation and the obtained vapor that exchanges heat) progress (i.e. in heating chamber) is passed through in drying device.It is dirty by being dried
Mud generation is partially dehydrated, and dry hot fume obtains the lower dry cold flue gas of temperature, includes dirt in the first obtained mixed gas
The vapor and be used for the other components such as above-mentioned direct-fired vapor that mud dehydration generates.
Some embodiments according to the present utility model, drying device 100 can be tray drier or paddle-dryer.
Some embodiments according to the present utility model, the moisture content of pending mud are about 80%, after being dried
To drying after moisture percentage in sewage sludge be about 40~50%.The temperature of above-mentioned vapor is 160~180 DEG C, above-mentioned dry hot fume
Temperature be 200~250 DEG C, the temperature of above-mentioned first mixed gas is 70~90 DEG C.As a result, in system high-temperature medium heat
It is available to make full use of, to significantly reduce process energy consumption, and achieve the effect that efficient drying sludge.
In addition, some embodiments according to the present utility model can also be into pending mud in above-mentioned drying process
It is incorporated suitable oil-containing active carbon, it should can be by the pyrolytic carbon heat of adsorption that is produced in the utility model technique containing active carbon
Middle tar of venting one's spleen obtains, and is also possible to sludge pre-distillation in the first destructive distillation device and obtains.By the way that pending mud and oil-containing is living
Property charcoal mixing be dried, on the one hand the tar in active carbon can be pyrolyzed, reduction product in tar content, it is another
Aspect can also play the role of skeleton using active carbon, to further increase the drying effect of sludge.
There is dry cold flue gas entrance 201, first to mix for embodiment according to the present utility model, gas-liquid separation device 200
Gas access 202, separated gas outlet 203, water out 204 and offgas outlet 205, dry cold flue gas entrance 201 and drying are cold
Exhanst gas outlet 106 is connected, and the first mixed gas entrance 202 is connected with the first mixed gas outlet 105, separated gas outlet 203
It is connected with dry hot fume entrance 103, gas-liquid separation device 200 is suitable for carrying out gas-liquid to dry cold flue gas and the first mixed gas
Separating treatment, to obtain separation gas, water and tail gas.Wherein, the temperature for separating gas is about 80 DEG C, can be with subsequent first
First destructive distillation cold flue gas air distribution of destructive distillation device output obtains the destructive distillation hot fume that temperature is about 200 DEG C, and via the hot cigarette of drying
Gas entrance enters drying device for pending mud to be dried.
Some embodiments according to the present utility model, gas-liquid separation device 200 can be knockout drum.
Embodiment according to the present utility model, the first destructive distillation device 310 have the first sludge inlet 311, the first destructive distillation heat
Smoke inlet 312, the first sludge outlet 313, the outlet 314 of the first destructive distillation cold flue gas and the second mixed gas outlet 315, first is dirty
Mud entrance 311 is connected with material mouth 104, and the first destructive distillation cold flue gas outlet 314 is connected with dry hot fume entrance 103, the first destructive distillation
Device 310 is suitable for carrying out the first destructive distillation processing to sludge after drying, to obtain pre-distillation sludge and the second mixed gas.It is dry
Sludge can be sent into the first destructive distillation device by discharge valve afterwards, and realized and sealed by material accumulation in conveyance conduit.Pass through
First destructive distillation processing, pre-distillation sludge can be further dehydrated, concurrent first portion destructive distillation, and production pyrolysis oil gas, which can
It inversely contacts in the first destructive distillation device with sludge with from the second destructive distillation device pyrolysis gas, and realizes during transportation jointly
Cooling promotes the precipitation of wherein tar.The tar of precipitation can be adsorbed on Sludge Surface and with sludge enter the second destructive distillation device into
Row second pyrolysis.In addition, the first destructive distillation cold flue gas of the first destructive distillation device 310 output can be used for in drying device 100 to
Processing sludge be dried, in the second mixed gas include pyrolysis gas and vapor, can be supplied into gas reclamation set 400 into
Row processing.
Some embodiments according to the present utility model, the first destructive distillation device 310 can be dry for the horizontal cylinder of inner shaft rotation
Evaporate machine.
Some embodiments according to the present utility model, it is dry in the first destructive distillation device 310 after sludge heating method be between
Formula heating is connect, the second destructive distillation cold flue gas of the second destructive distillation device 310 output can be used in heat source.Some realities according to the present utility model
Example is applied, the temperature of the second destructive distillation cold flue gas is 500~600 DEG C, and the temperature of the first destructive distillation cold flue gas is 350~450 DEG C, as a result,
It can satisfy the heat needs of sludge pre-distillation after drying.
Embodiment according to the present utility model, the second destructive distillation device 320 have the second sludge inlet 321, the second destructive distillation heat
Smoke inlet 322, the second destructive distillation cold flue gas outlet 323 and pyrolytic carbon outlet 324, the second sludge inlet 321 goes out with the first sludge
Mouth 313 is connected, and the second destructive distillation cold flue gas outlet 323 is connected with the first destructive distillation hot fume entrance 312, and the second destructive distillation device 320 is suitable
In carrying out further destructive distillation processing to pre-distillation sludge, makes sludge and its tar of surface adhesion that second pyrolysis occur, obtain
Pyrolytic carbon and the extremely low pyrolysis gas of tar content.Wherein, pyrolysis gas can return to the first destructive distillation device 310 and sludge after drying is inverse
To contact.
Some embodiments according to the present utility model, the first destructive distillation device 320 can be dry for the horizontal cylinder of inner shaft rotation
Evaporate machine.
Some embodiments according to the present utility model, the second destructive distillation processing are heated using indirect type, and heat source is the second destructive distillation
Hot fume, temperature are 750~950 DEG C；The time that second destructive distillation processing carries out can be 30~90min.Thus, it is possible into one
Step is conducive to the abundant destructive distillation of the abundant cracking and sludge of tar in material.
Embodiment according to the present utility model, mixed gas reclamation set 400 have the second mixed gas entrance 401, water
Vapor outlet port 402 and pyrolysis gas outlet 403, the second mixed gas entrance 401 are connected with the second mixed gas outlet 315, and water steams
Gas outlet 402 is connected with steam entry 102, and mixed gas reclamation set 400 is suitable for carrying out at separation the second mixed gas
Reason, to obtain vapor and pyrolysis gas.Wherein, vapor can be used as high-temperature medium and return to drying device 100 for treating place
Reason sludge is dried.
Some embodiments according to the present utility model, the temperature of above-mentioned second mixed gas are 150~200 DEG C.
With reference to Fig. 2, the sludge joint disposal system of the utility model may further comprise: burner 500.According to this reality
With novel embodiment, burner 500 has pyrolysis gas entrance 501, First air entrance 502, circulated air entrance 503, fuel
Entrance 504 and high-temperature flue gas outlet 505, pyrolysis gas entrance 505 are connected with the outlet of pyrolysis gas 403, circulated air entrance 503 and first
Destructive distillation cold flue gas outlet 314 is connected, and high-temperature flue gas outlet 505 is connected with the second destructive distillation hot fume entrance 322.Burner 500
Suitable for operating by the burning and air distribution of pyrolysis gas in supplement fuel, system and providing heat for system, obtained high-temperature flue gas can
It returns in the second destructive distillation device as the second destructive distillation hot fume and is handled for the second destructive distillation.
Some embodiments according to the present utility model, burner 500 are hot-blast stove.
Some embodiments according to the present utility model, the temperature of high-temperature flue gas are 750~950 DEG C, thus, it is possible to meet each
Step process and needs with other media for heat exchange.
Some embodiments according to the present utility model, above-mentioned supplement fuel use clean energy resource, such as natural gas, synthesis
Coal gas etc. after gas, purification.The pyrolysis gas main component that pyrolyzing sludge generates includes other hydro carbons such as hydrogen, carbon monoxide, methane
Compound.
As described above, including at least following heat utilization mode in the sludge joint disposal system of the utility model:
(1) (gas-liquid separation device is defeated with the tail gas of drying device after pyrolysis gas burns in burner with supplement fuel
Separation gas out) air distribution is carried out, obtain 750~950 DEG C of high-temperature flue gas (the second destructive distillation hot fume)；
(2) high-temperature flue gas provides the second destructive distillation cold flue gas (the after heat as 500~600 DEG C for the second destructive distillation device
One destructive distillation hot fume)；
(3) second destructive distillation cold flue gas provide for the first destructive distillation device becomes 350~450 DEG C of the first destructive distillation cold smoke after heat
Gas；
200~250 DEG C of the hot cigarette of drying is obtained after (4) first destructive distillation cold flue gas and dryer cycle wind (about 80 DEG C) air distribution
Gas；
(5) destructive distillation hot fume is directly entered and obtains about 80 DEG C of destructive distillation after drying device burner hearth and sludge direct contact heat transfer
Cold flue gas and vapor mixed tail gas, into gas-liquid separation device.
With reference to Fig. 2, the sludge joint disposal system of the utility model may further comprise: activated carbon adsorption device 600.It is living
Property charcoal adsorbent equipment 600 is located between the second mixed gas entrance 401 and the second mixed gas outlet 315, and and drying device
100 feed inlet 101 is connected (attached that the associated relation is not shown in the figure), and activated carbon adsorption device 600 is suitable for inhaling using active carbon
Tar in attached second mixed gas.Active carbon used in activated carbon adsorption device is dirty in the utility model technique
The resulting pyrolytic carbon of mud destructive distillation, after activated carbon adsorption tar, obtain containing active carbon can transport into drying device with to
Processing sludge mixing is dried, and on the one hand can be pyrolyzed the tar in active carbon as a result, the tar reduced in product contains
On the other hand amount can also play the role of skeleton using active carbon, to further increase the drying effect of sludge.
With reference to Fig. 2, the sludge joint disposal system of the utility model may further comprise: vapor regulator 700.Root
According to the embodiments of the present invention, vapor regulator 600 is located between steam outlet 402 and steam entry 102.By
This, before the vapor for exporting mixed gas reclamation set 400 returns to drying device 100, using in vapor pressure regulation
Device 600 carries out pressure regulation to vapor, carries out so as to further increase vapor as high-temperature medium to pending mud
Dry effect.Some embodiments according to the present utility model, mixed gas reclamation set output water vapour pressure be 1.5~
2.5MPa, after pressure regulation, pressure is 0.5~1.0MPa.
With reference to Fig. 2, the sludge joint disposal system of the utility model may further comprise: exhaust gas processing device 800.According to
The embodiments of the present invention, exhaust gas processing device 800 are connected with offgas outlet 205, and exhaust gas processing device 800 is suitable for gas-liquid
The tail gas that separator 200 is discharged is post-processed.Specifically, exhaust gas processing device 800 may include the common washing in this field
Tower, caustic wash tower, UV photodissociation unit and activated carbon adsorption unit etc. setting, and using this field mature technology to tail gas at
Reason, details are not described herein.
With reference to Fig. 2, the sludge joint disposal system of the utility model may further comprise: pyrolytic carbon water cooling plant 900.Root
According to the embodiments of the present invention, pyrolytic carbon water cooling plant 900 is connected with pyrolytic carbon outlet 324, and pyrolytic carbon water cooling plant 900 is suitable
Water cooling is carried out in the pyrolytic carbon exported to the second destructive distillation device 320.
As described above, the sludge joint disposal system according to the utility model embodiment can have selected from following advantage
At least one:
(1) pyrolysis oil gas first passes around the first destructive distillation device, so that heat makes full use of, and is conveying tar therein
It sufficiently precipitates in the process, avoids the generation of waste oil water；
(2) oil-containing active carbon can further be delivered to dry thermal cracking in drying device, the tar pyrolysis adsorbed, living
Property charcoal can play skeleton function；
(3) after pyrolysis gas is separated with vapor, pyrolysis gas is back to use system, resource consolidation in realization system；Vapor warp
Heat is provided for drying device after pressure adjusting, so that the heat of the moisture evaporated is fully used, avoids the damage of water latent heat
It loses, improves the thermal efficiency；
(4) destructive distillation hot fume enters drying device burner hearth and directly heats pending mud, and the water of drying machine is accelerated to remove, can
Moisture in drying device is taken out of lower than boiling temperature, reduces latent heat losses；
(5) low temperature wind is recycled, and recycle heat utilizes.So the only drying device removing of whole system discharge system
Sensible heat and First air, system thermal efficiency is high.
In order to facilitate understanding, below to the sludge joint disposal system embodiment using the utility model above-described embodiment
Sludge joint disposal method is described.Embodiment according to the present utility model, which includes: will be wait locate
Reason sludge is supplied to be dried into drying device, sludge, the first mixed gas and dry cold flue gas after being dried；It will
First mixed gas and dry cold flue gas supply into gas-liquid separation device and carry out gas-liquid separation processing, obtain separation gas, water
And tail gas, and separation gas is returned in drying device and is used to be dried；Sludge after drying is supplied to the first destructive distillation device
The first destructive distillation processing of middle progress, obtains pre-distillation sludge and the second mixed gas；Pre-distillation sludge is supplied to the second destructive distillation and is filled
The second destructive distillation processing of middle progress is set, obtains pyrolytic carbon and pyrolysis oil gas, and pyrolysis oil gas is returned in the first destructive distillation device and is used for
First destructive distillation processing；Second mixed gas is supplied and carries out separating treatment into mixed gas reclamation set, obtain vapor and
Pyrolysis gas, and vapor is returned in the drying device and is used to be dried.
Some embodiments according to the present utility model, the temperature of above-mentioned vapor are 160~180 DEG C.The above-mentioned hot cigarette of destructive distillation
The temperature of gas is 200~250 DEG C.The temperature of above-mentioned first mixed gas is 70~90 DEG C.As a result, in system high-temperature medium heat
Measure it is available make full use of, to significantly reduce process energy consumption, and achieve the effect that efficient drying sludge.
Some embodiments according to the present utility model, the temperature of above-mentioned second mixed gas are 150~200 DEG C.
Some embodiments according to the present utility model, above-mentioned sludge joint disposal method further comprises: pyrolysis gas is supplied
To burning and air distribution processing is carried out into burner, high-temperature flue gas is obtained；High-temperature flue gas is supplied to second destructive distillation and is filled
It is handled in setting for the second destructive distillation, obtains the second destructive distillation cold flue gas.Burner is suitable for through pyrolysis gas in supplement fuel, system
Burning and air distribution operate and for system provide heat, obtained high-temperature flue gas can be used as the second destructive distillation of return of the second destructive distillation hot fume
It is handled in device for the second destructive distillation.
Some embodiments according to the present utility model, above-mentioned supplement fuel use clean energy resource, such as natural gas, synthesis
Coal gas etc. after gas, purification.The pyrolysis gas main component that pyrolyzing sludge generates includes other hydro carbons such as hydrogen, carbon monoxide, methane
Compound.
Some embodiments according to the present utility model, the temperature of high-temperature flue gas are 750~950 DEG C, the second destructive distillation handle into
The capable time is 30~90min.It is done thus, it is possible to further be conducive to the abundant cracking of tar and the abundant of sludge in material
It evaporates.
Some embodiments according to the present utility model, the temperature of above-mentioned first destructive distillation cold flue gas is 350~450 DEG C, above-mentioned
The temperature of second destructive distillation cold flue gas is 500~600 DEG C.Thus, it is possible to meet the heat needs of sludge pre-distillation after drying.
The sludge joint disposal method of some embodiments according to the present utility model, the utility model may further comprise:
Second destructive distillation cold flue gas is supplied into the first destructive distillation device and is used for the first destructive distillation processing, obtains the first destructive distillation cold flue gas；By
One destructive distillation cold flue gas carries out air distribution with the gas that separates, and obtains dry hot fume, and dry hot fume is supplied to dry and is filled
For being dried in setting.
The sludge joint disposal method of some embodiments according to the present utility model, the utility model may further comprise:
It supplies by the second mixed gas to before mixed gas reclamation set, advances with activated carbon adsorption device to the second gaseous mixture
Body carries out adsorption treatment.The sludge destructive distillation institute in the utility model technique of active carbon used in activated carbon adsorption device
Pyrolytic carbon, after activated carbon adsorption tar, what is obtained can transport into drying device and pending mud containing active carbon
Mixing is dried, and on the one hand can be pyrolyzed the tar in active carbon as a result, reduces the tar content in product, another party
Face can also play the role of skeleton using active carbon, to further increase the drying effect of sludge.
The sludge joint disposal method of some embodiments according to the present utility model, the utility model may further comprise:
Before vapor is back to drying device, advances with vapor regulator and pressure regulation is carried out to vapor, so as to
Further increase the effect that vapor is dried pending mud as high-temperature medium.Some realities according to the present utility model
Apply example, the water vapour pressure of mixed gas reclamation set output is 1.5~2.5MPa, after pressure regulation, pressure is 0.5~
1.0MPa。
The sludge joint disposal method of some embodiments according to the present utility model, the utility model may further comprise:
Tail gas is supplied and is post-processed into exhaust gas processing device.Specifically, exhaust gas processing device may include the common water in this field
Wash tower, caustic wash tower, UV photodissociation unit and activated carbon adsorption unit etc. setting, and using this field mature technology to tail gas at
Reason, details are not described herein.
The sludge joint disposal method of some embodiments according to the present utility model, the utility model may further comprise:
Pyrolytic carbon is supplied to pyrolytic carbon water cooling plant and carries out cooling treatment.
In summary, according to the sludge joint disposal method of the utility model embodiment, first with drying device, in water
Pending mud is dried under the action of steam and dry hot fume, sludge, the first mixed gas after being dried
(including vapor, dry flue gas generated etc.) and dry cold flue gas；Wherein, the first mixed gas and dry cold flue gas enter gas
Liquid separating apparatus carries out gas-liquid separation, and water, separation gas and tail gas are obtained after heat exchange, and separation gas, which can return in drying device, to be used
It is dried in pending mud.Sludge enters the first destructive distillation device progress pre-distillation after drying, further takes off at high temperature
Water, concurrent first portion destructive distillation, obtains partial thermal decomposition oil gas and pre-distillation sludge, in the first destructive distillation device, what pre-distillation generated
Pyrolysis oil gas can inversely be contacted with sludge, and cool down during transportation, tar is promoted to be precipitated and be adhered to Sludge Surface.Afterwards
Continuous, pre-distillation sludge enters the second destructive distillation device further progress destructive distillation, tar two secondary fissures of generation of sludge and its surface adhesion
Solution, the extremely low pyrolysis gas of obtained pyrolytic carbon and tar content.Meanwhile pyrolysis gas can be via the second dirt of the second destructive distillation device
The discharge port of mud entrance and the first destructive distillation device is back in the first destructive distillation device, is occurred with the sludge in the first destructive distillation device inverse
To contact, promote the precipitation of tar in sludge.On the other hand, the second mixed gas of the first destructive distillation device discharge (mainly includes
Vapor, the pyrolysis gas for being back to the first destructive distillation device etc.) enter the isolated vapor of mixed gas reclamation set and pyrolysis
Gas, wherein vapor can return in drying device and pending mud is dried.The sludge of the utility model as a result,
Joint disposal method, which efficiently solves the oil water mixture that energy consumption in existing sludge treatment technique is high, generates and is difficult to handle etc., asks
Topic, meanwhile, the high-temperature medium generated in technique can carry out reasonable distribution, and vapor latent heat losses are not present in entire technique, thus
It improves the technique thermal efficiency, reduce energy consumption.
Below with reference to specific embodiment, the utility model is described, it should be noted that these embodiments are only
Descriptive, without limiting the utility model in any way.
Embodiment
The sludge of moisture content 80% is mixed with the oil-containing active carbon that the first destructive distillation device exports and is sent into paddle-dryer,
And in steam temperature be 160 DEG C, lower dehydration and drying 60min under conditions of entering 200 DEG C of kiln gas, obtaining moisture content is 50%
Sludge；Sludge enters the first destructive distillation device by vertical chute, and carrying out dehydration pre-distillation at 600 DEG C of flue-gas temperature, (first is dry
Evaporate processing), enter the second destructive distillation device later；The heat that vapor, the second destructive distillation device generated in first destructive distillation device imports
It vents one's spleen and the fixed gas of partial sludge pyrolysis generation is mixed into the second mixed gas in the first destructive distillation device, promote to be pyrolyzed
Gas cooling is precipitated tar and is adhered to Sludge Surface, and is fed again into the pyrolysis of the second destructive distillation device, the vapor of acquisition with sludge
And pyrolysis gas (150 DEG C) sequentially enters pyrolytic carbon adsorbent equipment, vapor and pyrolysis air separation (1.5MPa) and water
Steam regulator obtains 180 DEG C of saturated steams (0.5MPa) and pyrolysis gas；Saturated steam is back to use dry as heat source
Dry device, pyrolysis gas are back to use burner as fuel；Sludge into the second destructive distillation device heats under anoxic condition
60min occurs pyrolysis (the high-temperature flue gas indirect heating that temperature is 800 DEG C), generates pyrolysis oil gas and pyrolytic carbon；It is logical to be pyrolyzed oil gas
Sewage sludge feed chute and sludge reverse flow are crossed, the first destructive distillation device is returned；The water cooled screw conveyor cooling of pyrolytic carbon is laggard
Enter canister, does further resource utilization.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (6)
1. a kind of sludge joint disposal system characterized by comprising
Drying device, the drying device have feed inlet, steam entry, dry hot fume entrance, discharge port, the first mixing
Gas vent and dry cold flue gas outlet, the drying device includes the heating chamber being isolated from each other and material chamber；
Gas-liquid separation device, the gas-liquid separation device have dry cold flue gas entrance, the first mixed gas entrance, separation gas
Outlet, water out and offgas outlet, the dry cold flue gas entrance are connected with the dry cold flue gas outlet, first mixing
Gas access is connected with first mixed gas outlet, and the separated gas outlet is connected with the dry hot fume entrance；
First destructive distillation device, first destructive distillation device have the first sludge inlet, the first destructive distillation hot fume entrance, the first sludge
Outlet, the outlet of the first destructive distillation cold flue gas and the second mixed gas outlet, first sludge inlet are connected with the discharge port, institute
The outlet of the first destructive distillation cold flue gas is stated to be connected with the dry hot fume entrance；
Second destructive distillation device, second destructive distillation device have the second sludge inlet, the second destructive distillation hot fume entrance, the second destructive distillation
Cold flue gas outlet and pyrolytic carbon outlet, second sludge inlet are connected with first sludge outlet, and second destructive distillation is cold
Exhanst gas outlet is connected with the first destructive distillation hot fume entrance；
Mixed gas reclamation set, the mixed gas reclamation set have the second mixed gas entrance, steam outlet and heat
It vents one's spleen outlet, the second mixed gas entrance is connected with the second mixed gas outlet, and the steam outlet and the water steam
Gas entrance is connected.
2. sludge joint disposal system according to claim 1, which is characterized in that further comprise:
Burner, the burner have pyrolysis gas entrance, First air entrance, circulated air entrance, fuel inlet and high temperature
Exhanst gas outlet, the pyrolysis gas entrance are connected with the pyrolysis gas outlet, the circulated air entrance and the first destructive distillation cold smoke
Gas outlet is connected, and the high-temperature flue gas outlet is connected with the second destructive distillation hot fume entrance.
3. sludge joint disposal system according to claim 1, which is characterized in that further comprise:
Activated carbon adsorption device, the activated carbon adsorption device are located at the second mixed gas entrance and second gaseous mixture
Between body outlet, and it is connected with the feed inlet of the drying device.
4. sludge joint disposal system according to claim 1, which is characterized in that further comprise:
Vapor regulator, the vapor regulator are located between the steam outlet and the steam entry.
5. sludge joint disposal system according to claim 1, which is characterized in that further comprise:
Exhaust gas processing device, the exhaust gas processing device are connected with the offgas outlet.
6. sludge joint disposal system according to claim 1, which is characterized in that further comprise:
Pyrolytic carbon water cooling plant, the pyrolytic carbon water cooling plant are connected with pyrolytic carbon outlet.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110078350B (en) * | 2019-06-03 | 2022-01-11 | 北京云水浩瑞环境科技有限公司 | Sludge comprehensive treatment system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078350B (en) * | 2019-06-03 | 2022-01-11 | 北京云水浩瑞环境科技有限公司 | Sludge comprehensive treatment system and method |
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