CN109650695A - Sludge drying mechanism and drying method for sludge - Google Patents
Sludge drying mechanism and drying method for sludge Download PDFInfo
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- CN109650695A CN109650695A CN201811591589.1A CN201811591589A CN109650695A CN 109650695 A CN109650695 A CN 109650695A CN 201811591589 A CN201811591589 A CN 201811591589A CN 109650695 A CN109650695 A CN 109650695A
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- 239000010802 sludge Substances 0.000 title claims abstract description 120
- 238000001035 drying Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000012153 distilled water Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 23
- 238000000926 separation method Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 8
- 239000010865 sewage Substances 0.000 description 4
- 241001467578 Microbacterium Species 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses sludge drying mechanism and drying method for sludge.The sludge drying mechanism includes: pre-heater, has the first sludge inlet, the first sludge outlet, the first steam inlet and distilled water outlet, and pre-heater connects vacuum system；Intermediate heater, has the second sludge inlet, the second sludge outlet, the second steam inlet and the first steam (vapor) outlet, and the first steam (vapor) outlet is connected to the first steam inlet；Post-heater has third sludge inlet, third sludge outlet, third steam inlet and the second steam (vapor) outlet；Second steam (vapor) outlet is connected to the second steam inlet；Cyclone separator, bottom end are exported with dry mud, the dry dry mud pipeline of mud outlet；The top of cyclone separator has eddy flow steam (vapor) outlet；Steam jet device is connected to third steam inlet；Steam jet device is connected to the entrance of third sludge outlet and cyclone separator；Compressor, gas vent are connected to steam jet device.Sludge drying mechanism of the present invention, can rapid draing sludge, low energy consumption.
Description
Technical field
The present invention relates to sanitary sewage disposal technical fields, and in particular to sludge drying mechanism and drying method for sludge.
Background technique
Traditional sewage treatment plants can generate a large amount of sludge, these sludge mainly include anaerobism, aerobic, anoxic is micro-
Bacterium residue and other residues, this sludge are not easy drying, and energy consumption is high, send landfill yard to be unwilling to receive again, has perplexed all
Sewage treatment plants.
Summary of the invention
Based on this, the present invention it is necessary to provide it is a kind of can rapid draing sludge, the sludge drying mechanism that low energy consumption.
The present invention also provides a kind of drying method for sludge.
In order to achieve the object of the present invention, the invention adopts the following technical scheme:
A kind of sludge drying mechanism comprising:
Pre-heater, the pre-heater have the first sludge inlet, the first sludge outlet, the first steam inlet and distillation
Water out, first sludge inlet are equipped with the first screw pump, and the pre-heater connects vacuum system, to the preheating
Device vacuumizes；
Intermediate heater, the intermediate heater have the second sludge inlet, the second sludge outlet, the second steam inlet and
First steam (vapor) outlet, second sludge inlet are connected to first sludge outlet and are equipped with the second screw pump, and described first steams
Vapor outlet is connected to first steam inlet, to provide heat source for the pre-heater；
Post-heater, the post-heater have third sludge inlet, third sludge outlet, third steam inlet and second
Steam (vapor) outlet, the third sludge inlet are connected to second sludge outlet and are equipped with third screw pump；Second steam goes out
Mouth is connected to second steam inlet, to provide heat source for the intermediate heater；
The bottom end of cyclone separator, the cyclone separator is exported with dry mud, the dry dry mud pipeline of mud outlet,
The dry mud pipeline has dry mud mouth；The top of the cyclone separator has eddy flow steam (vapor) outlet；
Steam jet device, the steam jet device are connected to the third steam inlet to provide heat for the post-heater
Source；The steam jet device is connected to the entrance of the third sludge outlet and the cyclone separator；
Compressor, the compressor have gas access and gas vent, and the gas vent is connected to the steam jet
Device is to provide high-speed flow.
Above-mentioned sludge drying mechanism, pre-heater and intermediate heater and post-heater use temperature step to sludge
It is dried respectively, the moisture in piecemeal removal sludge, obtains being flashed to cyclone separator after dry mud particle and further remove water
Point, dry mud is finally obtained, this process can carry out broken wall to sludge, flow out its moisture sufficiently, carry out to the maximum extent to sludge
It is dry；The steam that steam jet device provides flows out after providing heating source for post-heater again to intermediate heater heating, and centre adds
Pre-heater is heated again after hot device heating, just heat source is provided in this way for each heater of step temperature, reduces drying
Energy consumption in the process.
In some of embodiments, the dry mud pipeline is connected to first sludge inlet and is equipped with the 4th screw pump.
In some of embodiments, the eddy flow steam (vapor) outlet be connected to the intermediate heater the second steam inlet and/
Or the first steam inlet of the pre-heater, to provide heat source for the intermediate heater and/or the pre-heater.
In some of embodiments, the eddy flow steam (vapor) outlet is connected to the gas access of the compressor.
In some of embodiments, the eddy flow steam (vapor) outlet is connected to a filter, and the filter is connected to a condenser.
In some of embodiments, the filter is also connected to the second steam inlet of the intermediate heater, for institute
It states intermediate heater and heat source is provided.
In some of embodiments, the filter is connected to the gas access of the compressor.
In some of embodiments, the sludge drying mechanism further includes being connected to the gas vent of the compressor and described
The auxiliary heater of steam jet device.
The present invention also provides a kind of drying method for sludge comprising following steps:
Wet mud high pressure is sent into pre-heater, the pre-heater vacuumizes and is heated up to 50 DEG C -70 DEG C, carries out first
Broken wall is dry；
Sludge high-pressure after first broken wall is sent into intermediate heater, the intermediate heater is heated up to 70 DEG C -90 DEG C, into
The secondary broken wall of row is dry；
Sludge high-pressure after secondary broken wall is sent into post-heater, the post-heater is heated up to 90 DEG C -120 DEG C, carries out
Broken wall is dry again, obtains dry mud particle；
The dry mud particle is flashed to high speed steam stream, and the dry mud particle is sent into cyclonic separation by the high velocity vapor stream
Device goes out the moisture in the dry mud particle with centrifugal force cyclonic separation, obtains dry mud.
Above-mentioned drying method for sludge is dried sludge using temperature step, the water in piecemeal removal sludge respectively
Point, flash separation further removes moisture after obtaining dry mud particle, finally obtains dry mud, this process can carry out broken wall to sludge,
It flows out its moisture sufficiently, sludge is dried to the maximum extent；Steam provided for post-heater flow out again after heating source it is right
Intermediate heater heating again heats pre-heater after intermediate heater heating, is so just each heating of step temperature
Device provides heat source, reduces the energy consumption in drying process.
In some of embodiments, the heat source being discharged after the post-heater heating supplies the intermediate heater for adding
Heat, the heat source being discharged after the intermediate heater heating supply the pre-heater for heating.
In some of embodiments, the steam of the cyclone separator discharge provides heat source for the intermediate heater.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of sludge drying mechanism described in the embodiment of the present invention one.
Specific embodiment
It to facilitate the understanding of the present invention, below will be to invention is more fully described.But the present invention can be to be permitted
Mostly different form is realized, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes
It is more thorough and comprehensive to the understanding of the disclosure.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Fig. 1 is please referred to, the present invention provides a kind of sludge drying mechanism 100, for drying sewage treatment plants discharge
Sludge carries out landfill or other processing after dry.The sludge drying mechanism 100 include pre-heater 10, intermediate heater 20, after
Heater 30, cyclone separator 40, steam jet device 50 and compressor 60, pre-heater 10 be used for untreated sludge into
The first heating broken wall treatment of row, intermediate heater 20 are used to carry out at reheating broken wall the processed sludge of pre-heater 10
Reason, post-heater 30 are used to be heated broken wall treatment again to the processed sludge of intermediate heater 20, post-heater 30
Temperature is greater than the temperature of intermediate heater 20, and the temperature of intermediate heater 20 is greater than the temperature of pre-heater 10, to form rank
Terraced temperature carries out broken wall to sludge；The dry mud particle that cyclone separator 40 obtains the processing of post-heater 30 is centrifuged,
It is again separate out moisture therein, obtains dry mud.Steam jet device 50 is pre-heater 10, intermediate for blowing out high-temperature steam
Heater 20 and post-heater 30 provide heating source, and compressor 60 is blown to eddy flow point for providing high-speed flow, by dry mud particle
From device 40.
Please continue to refer to Fig. 1, there is pre-heater 10 first sludge inlet 11, the first sludge outlet 12, the first steam to enter
Mouth 13 and distilled water outlet 14, the first sludge inlet 11 are equipped with the first screw pump 15, preheat for wet mud high pressure to be sent into
Device 10 is heated.High temperature is passed to sludge in pre-heater 10 by heating source, and sludge is carried out broken wall treatment, thus
Moisture inside exudation, achievees the purpose that dry.The drying principles phase of pre-heater 10, intermediate heater 20 and post-heater 30
Together, only temperature is different, and broken wall degree is different.
Pre-heater 10 is connected to a vacuum system 16 and is heated under vacuum conditions with vacuumizing to pre-heater 10, heats
Shell-broken effect is more preferable.
The temperature of pre-heater 10 is less than the temperature of intermediate heater 20, and pre-heater 10 can be heated by intermediate heater 20
Low Temperature Steam afterwards enters pre-heater 10 by the first steam inlet 13, is 10 heat supply of pre-heater, reduces the energy of whole system
Consumption；The distilled water that pre-heater 10 is thermally formed is flowed out from distilled water outlet 14.The temperature of pre-heater 10 is 50 DEG C -70 DEG C.
There is intermediate heater 20 second sludge inlet 21, the second sludge outlet 22, the second steam inlet 23 and first to steam
Vapor outlet 24, the second sludge inlet 21 are equipped with the second screw pump 25, and treated the sludge of pre-heater 10 is from the second sludge inlet
21, which are sent into intermediate heater 20 by 25 high pressure of the second screw pump, is heated.Intermediate heater 20 can be added by post-heater 30
Relatively Low Temperature Steam after heat enters intermediate heater 20 by the second steam inlet 23, is 20 heat supply of intermediate heater, reduces entire
The energy consumption of system；The Low Temperature Steam that intermediate heater 20 is thermally formed is flowed out from the first steam (vapor) outlet 24, is mentioned for pre-heater 10
Supplying heat source.The temperature of pre-heater 10 is 70 DEG C -90 DEG C.
Intermediate heater 20 also sets up exhaust outlet 26, for gas extra in intermediate heater 20 to be discharged, prevents centre
Gas pressure in heater 20 is excessive, guarantees that equipment operates normally.
Post-heater 30 has third sludge inlet 31, third sludge outlet 32, third steam inlet 33 and the second steam
Outlet 34, third sludge inlet 31 are equipped with third screw pump 35, and treated the sludge of intermediate heater 20 is from third sludge inlet
31, which are sent into post-heater 30 by 35 high pressure of third screw pump, is heated.Post-heater 30 provides height by steam jet device 50
Warm steam, high-temperature steam enter post-heater 30 by third steam inlet 33, are 30 heat supply of post-heater, reduce whole system
Energy consumption.The relatively Low Temperature Steam that post-heater 30 is thermally formed is flowed out from the second steam (vapor) outlet 34, provides heat for intermediate heater 20
Source.The temperature of post-heater 30 is 90 DEG C -120 DEG C.Dry mud particle is obtained after the processing of post-heater 30.
Steam jet device 50 is connected to steam boiler, can eject high-temperature steam.Steam jet device 50 is connected to third steam
Entrance 33 is to provide high-temperature steam heat source for post-heater 30.
The moisture in sludge is separated by centrifugal force inside cyclone separator 40, further to post-heater 30
Obtained dry mud particle is dried, and finally obtains dry mud.The side of cyclone separator 40 has centrifugation entrance 41, for entering
Dry mud particle to be processed, the bottom of cyclone separator 40 have dry mud outlet 42, the dry mud completed for processing to be discharged, eddy flow
The top of separator 40 has eddy flow steam (vapor) outlet 43, the high-temperature water for the steam of the dry mud particle of wrapped folder to be discharged and isolates
Point.
The 42 one dry mud pipeline 44 of connection of dry mud outlet of cyclone separator 40, dry mud pipeline 44 are used to store dry completion
Dry mud.Dry mud pipeline 44 has dry mud mouth 45 to prevent dry mud to be deposited in dry mud pipeline 44 for constantly taking out dry mud.
Further, dry mud pipeline 44 is connected to the first sludge inlet 11 of pre-heater 10 and is equipped with the 4th screw pump 46,
By the dry mud after the completion of processing, sub-high pressure is sent to pre-heater 10 to 4th screw pump 46 again, and the sludge of pre-heater 10 is added in mixing
It handles together, sludge can be carried out following harm reason in this way, finally obtain the lower dry mud of moisture content.
The eddy flow steam (vapor) outlet 43 of cyclone separator 40 is connected to a condenser 70, and the steam in cyclone separator 40 is by eddy flow
Steam (vapor) outlet 43 is discharged, and carries out condensation process into condenser 70.Condenser 70 has exhaust outlet 71.
Further, in order to reduce energy consumption, condenser 70 is connected to the second steam inlet 23 of intermediate heater 20 and/or pre-
First steam inlet 13 of heater 10, to provide heat source for intermediate heater 20 and/or pre-heater 10.In the present embodiment,
Vapor (steam) temperature into condenser 70 can improve steam source for intermediate heater 20.
The eddy flow steam (vapor) outlet 43 of cyclone separator 40 is also connected to the second steam inlet 23 of intermediate heater 20, in
Between heater 20 provide steam source.
Compressor 60 has gas access 61 and gas vent 62, and gas vent 62 is connected to steam jet device 50 or connection
Jet chimney between steam jet device 50 and third steam inlet 33, to provide high velocity vapor stream, by the dry of post-heater 30
Mud particle is sent to cyclone separator 40.
The eddy flow steam (vapor) outlet 43 of cyclone separator 40 is also connected to the gas access 61 of compressor 60, and steam is supplied and is compressed
Machine 60 is mixed into steam jet device 50 after generating high-speed flow.Cyclone separator 40 is also connected to the second steam of intermediate heater 20
Entrance 23, to provide steam source for intermediate heater 20.
In order to keep the steam-purity value into condenser 70 higher, condenser 70 is not blocked, the eddy flow of cyclone separator 40 steams
Vapor outlet 43 is connected to a filter 80, and filter 80 is connected to condenser 70.Filter 80 is filtered steam, removes therein
Impurity.
Filter 80 is also connected to the gas access 61 of compressor 60, and steam is supplied compressor 60, after generating high-speed flow,
It is mixed into steam jet device 50.Filter 80 is also connected to the second steam inlet 23 of intermediate heater 20, for intermediate heater 20
Steam source is provided.
Further, above-mentioned sludge drying mechanism 100 further includes that the gas vent 62 for being connected to compressor 60 and steam are penetrated
The auxiliary heater 90 of device 50 is flowed, to provide auxiliary thermal source for steam jet device 50.The auxiliary heater 90 can be burning tail
Gas or waste heat boiler steam achieve the purpose that recycle heat, reduce energy consumption.
Above-mentioned steam stream passes to and gas circulation is all made of jet chimney and is connected to.
Above-mentioned sludge drying mechanism, pre-heater and intermediate heater and post-heater use temperature step to sludge
It is dried respectively, the moisture in piecemeal removal sludge, obtains being flashed to cyclone separator after dry mud particle and further remove water
Point, dry mud is finally obtained, this process can carry out broken wall to sludge, flow out its moisture sufficiently, carry out to the maximum extent to sludge
It is dry；The steam that steam jet device provides flows out after providing heating source for post-heater again to intermediate heater heating, and centre adds
Pre-heater is heated again after hot device heating, just heat source is provided in this way for each heater of step temperature, reduces drying
Energy consumption in the process.
The present invention also provides a kind of drying method for sludge, include the following steps:
Sludge high-pressure is sent into pre-heater 10, pre-heater 10 vacuumizes and is heated up to 50 DEG C -70 DEG C, broken for the first time
Wall is dry；Sludge high-pressure after first broken wall is sent into intermediate heater 20, intermediate heater 20 is heated up to 70 DEG C -90 DEG C, into
The secondary broken wall of row is dry；Sludge high-pressure after secondary broken wall is sent into post-heater 30, post-heater 30 is heated up to 90 DEG C -120
DEG C, broken wall drying three times is carried out, dry mud particle is obtained；Dry mud particle is flashed to high speed steam stream, and high velocity vapor stream is by dry mud
Grain feeding cyclone separator 40, goes out the moisture in dry mud particle with centrifugal force cyclonic separation, obtains dry mud.
The heat source supply intermediate heater 20 that post-heater 30 is discharged after heating is for heating, after intermediate heater 20 heats
The heat source supply pre-heater 10 of discharge is for heating.Achieve the purpose that recycle heat.
The steam that cyclone separator 40 is discharged is that intermediate heater 20 provides heat source.The steam that cyclone separator 40 is discharged is also
Compressor 60 can be added, compressed high-speed flow is mixed into the steam for transporting dry mud particle, and row is at high velocity vapor stream.
Steam jet device 50 is used to provide heating steam for post-heater 30.The compressed high-speed flow of compressor 60 is mixed into
In the steam that steam jet device 50 sprays, row is at high velocity vapor stream.
Above-mentioned drying method for sludge is dried sludge using temperature step, the water in piecemeal removal sludge respectively
Point, flash separation further removes moisture after obtaining dry mud particle, finally obtains dry mud, this process can carry out broken wall to sludge,
It flows out its moisture sufficiently, sludge is dried to the maximum extent；Steam provided for post-heater flow out again after heating source it is right
Intermediate heater heating again heats pre-heater after intermediate heater heating, is so just each heating of step temperature
Device provides heat source, reduces the energy consumption in drying process.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of sludge drying mechanism characterized by comprising
There is the first sludge inlet, the first sludge outlet, the first steam inlet and distilled water to go out for pre-heater, the pre-heater
Mouthful, first sludge inlet is equipped with the first screw pump, and the pre-heater connects vacuum system, to take out to the pre-heater
Vacuum；
Intermediate heater, the intermediate heater have the second sludge inlet, the second sludge outlet, the second steam inlet and first
Steam (vapor) outlet, second sludge inlet are connected to first sludge outlet and are equipped with the second screw pump, and first steam goes out
Mouth is connected to first steam inlet, to provide heat source for the pre-heater；
Post-heater, the post-heater have third sludge inlet, third sludge outlet, third steam inlet and the second steam
Outlet, the third sludge inlet are connected to second sludge outlet and are equipped with third screw pump；Second steam (vapor) outlet connects
Lead to second steam inlet, to provide heat source for the intermediate heater；
The bottom end of cyclone separator, the cyclone separator is exported with dry mud, and the dry dry mud pipeline of mud outlet is described
Dry mud pipeline has dry mud mouth；The top of the cyclone separator has eddy flow steam (vapor) outlet；
Steam jet device, the steam jet device are connected to the third steam inlet to provide heat source for the post-heater；Institute
State the entrance that steam jet device is connected to the third sludge outlet and the cyclone separator；
Compressor, the compressor have gas access and a gas vent, the gas vent be connected to the steam jet device with
High-speed flow is provided.
2. sludge drying mechanism according to claim 1, which is characterized in that the dry mud pipeline is connected to first sludge
Entrance is simultaneously equipped with the 4th screw pump.
3. sludge drying mechanism according to claim 1, which is characterized in that the eddy flow steam (vapor) outlet is connected to the centre
Second steam inlet of heater and/or the first steam inlet of the pre-heater, for the intermediate heater and/or institute
It states pre-heater and heat source is provided.
4. sludge drying mechanism according to claim 1, which is characterized in that the eddy flow steam (vapor) outlet is connected to the compression
The gas access of machine.
5. sludge drying mechanism according to claim 1-3, which is characterized in that the eddy flow steam (vapor) outlet connection
One filter, the filter are connected to a condenser.
6. sludge drying mechanism according to claim 5, which is characterized in that the filter is also connected to the intermediate heating
Second steam inlet of device, to provide heat source for the intermediate heater.
7. sludge drying mechanism according to claim 5, which is characterized in that the filter is connected to the gas of the compressor
Body entrance.
8. sludge drying mechanism according to claim 1, which is characterized in that the sludge drying mechanism further includes connection institute
State the gas vent of compressor and the auxiliary heater of the steam jet device.
9. a kind of drying method for sludge, which comprises the steps of:
Wet mud high pressure is sent into pre-heater, the pre-heater vacuumizes and is heated up to 50 DEG C -70 DEG C, carries out first broken wall
It is dry；
Sludge high-pressure after first broken wall is sent into intermediate heater, the intermediate heater is heated up to 70 DEG C -90 DEG C, carries out two
Secondary broken wall is dry；
Sludge high-pressure after secondary broken wall is sent into post-heater, the post-heater is heated up to 90 DEG C -120 DEG C, carries out again
Broken wall is dry, obtains dry mud particle；
The dry mud particle is flashed to high speed steam stream, and the dry mud particle is sent into cyclone separator by the high velocity vapor stream,
Go out the moisture in the dry mud particle with centrifugal force cyclonic separation, obtains dry mud.
10. drying method for sludge according to claim 9, which is characterized in that the heat being discharged after the post-heater heating
Source supplies the intermediate heater for heating, and the heat source being discharged after the intermediate heater heating supplies the pre-heater and uses
In heating.
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| CN201811591589.1A CN109650695B (en) | 2018-12-25 | 2018-12-25 | Sludge drying device and sludge drying method |
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| CN110642544A (en) * | 2019-10-28 | 2020-01-03 | 湖北大学 | Method for rapidly preparing lightweight aggregate by using dredged sludge |
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| CN110642544B (en) * | 2019-10-28 | 2022-01-28 | 湖北大学 | Method for rapidly preparing lightweight aggregate by using dredged sludge |
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| CN109650695B (en) | 2024-08-09 |
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