CN105254148B - A kind of sludge superheated vapor dries the double utilization device and method of exhaust steam residual heat - Google Patents
A kind of sludge superheated vapor dries the double utilization device and method of exhaust steam residual heat Download PDFInfo
- Publication number
- CN105254148B CN105254148B CN201510681595.6A CN201510681595A CN105254148B CN 105254148 B CN105254148 B CN 105254148B CN 201510681595 A CN201510681595 A CN 201510681595A CN 105254148 B CN105254148 B CN 105254148B
- Authority
- CN
- China
- Prior art keywords
- sludge
- exhaust steam
- cyclone separator
- double
- shaftless screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The double utilization device and method of exhaust steam residual heat, including shaftless screw feeder, air valve, heater, Double shaft stirring drying machine, mud granule forming machine, mesh dryer, tail gas washing tower, cyclone separator are dried the present invention relates to a kind of sludge superheated vapor（A、B）, blower fan（A、B）And heat exchanger.Shaftless screw feeder, Double shaft stirring drying machine, mud granule forming machine, mesh dryer are sequentially connected, and form logistics corridor；Heater, Double shaft stirring drying machine, cyclone separator A, blower fan A, air valve B are in turn connected to form interior circulation gas channel；Shaftless screw feeder, cyclone separator B, heat exchanger, tail gas washing tower are in turn connected to form outer gas channel；Heat exchanger, blower fan, mesh dryer formation combination drying.The beneficial effect of the invention is to realize the double utilization of exhaust steam residual heat, energy-efficient, effectively prevents condensation；Waste water, the discharge of waste gas no pollution；It is used to make fertilizer after sludge shaping, realizes sludge recycling.
Description
Technical field
The present invention relates to a kind of sludge drying mechanism and method, more particularly, to one kind by dried medium of superheated steam,
The double utilization device and method of waste heat.
Background technology
As Re-search on Urbanization level is improved, urban wastewater treatment amount is increased, and needs the sludge quantity of safe handling increasingly to increase.
By in by the end of March, 2014, China cities and towns are accumulative builds up sewage treatment plant 3622, the m of sewage treatment capacity about 1.53 hundred million3/ d, 80%
The sludge yield of moisture content is more than 30,000,000 t；2015, China produced sludge (80% moisture content) total amount per year and is up to 33,590,000
t；Expect 2018, the sludge yield of 80% moisture content will further break through 40,000,000 t（Ruan Chen Min China specific resistance to filtration
Directionality thinking [J] water purification technologies of industry development, 2015,34（s1）：1—3.）.Sludge is a kind of pollution control technique
Byproduct, the features such as with moisture content height, complicated component, containing a large amount of fatal microorganism, and easily causes secondary pollution, to it
It is by after-treatment after the premise of realizing sewage sludge harmlessness, minimizing and recycling, drying sludge that processing, which is dried,
Its added value is improved, it is recycled.Traditional sludge processing includes the modes such as burning, landfill, compost, burns because sludge contains
The high economy of water rate is bad and the easy generation material such as bioxin, fills land occupation and easily causes in secondary pollution, sludge
Compost should not be directly used in containing heavy metal.
Drying is a kind of operation of high energy consumption, traditional drying generally using hot blast as dried medium, exist oxidation Decomposition,
Catch fire, explode and the shortcomings of high energy consumption.Superheat steam drying is as a kind of novel dried mode, and it refers to straight using superheated steam
Connect the operation for contacting and going moisture removal with material.It is excellent that superheated steam has that specific heat capacity is big, heat and mass transfer coefficient is big and latent heat is big etc.
Point, therefore using superheated steam, the mass flow as needed for being dried dried medium is small, speed is fast, the time is short, with significant energy-conservation
Effect.The all steam of superheat steam drying tail gas, with substantial amounts of latent heat, therefore can superheated steam realize the key of energy-conservation
It is how economically to utilize the unnecessary exhaust steam of drying process generation.According to documents and materials（The such as Zhang Xukun, Sun Ruichen, Wang Xuecheng are dirty
Mud superheated steam thin layer drying characteristic and drying model build [J] EIs, 2014,30（14）：258—266.）Can
Know, the superheat steam drying starting stage has condensing characteristic, the characteristic is negative for drying process, because steam condensation makes
The moisture content increase of material, extends the time of whole drying process.Fig. 5 is sludge superheated vapor initial stage of drying in document
Drying curve understands, sludge under the conditions of 160~280 DEG C of superheat steam dryings, the initial condensation time in 40~15s, this
Allow for whole drying process time increase, moisture percentage in sewage sludge increase, so as to add system energy consumption.
The moisture content of usual dewatered sludge is up to 80% or so, if by 1 ton of aqueous 80% drying sludge to aqueous 20%,
0.75 ton of high temperature exhaust steam will be produced.If preheating and multiple utilization can be carried out to material using high temperature exhaust steam residual heat, on the one hand
Energy-conservation is realized, drying time is on the other hand shortened, drying efficiency is improved, energy-conservation is furthermore achieved that.In addition, when
Steam can discharge substantial amounts of latent heat when becoming liquid phase by gas phase, and liquid coolant-temperature gage is higher after steam is condensed into water, if energy
Energy consumption can be greatly lowered by enough reclaiming its sensible heat.
It is as follows using device and method that current sludge superheated vapor dries exhaust steam residual heat：
The U of Chinese patent CN 201530772 disclose a kind of sludge superheated vapor drying system of two-stage paddle dryer, should
System burns the steam produced as entirely dry thermal source, two grades of blade dryers are produced to being burned after drying sludge
Excess steam be dried for one-level blade dryer, by the way of indirect heat exchange to steam circulation utilize, efficiently section
Can, finally discarded object is handled, material zero-emission, no pollution is realized.However, the steam that one-level blade dryer is produced
Sludge incineration is simply used for after processing to fail to be used for other drying processes and sludge to fail to recycle.
The A of Chinese patent CN 1686876 disclose the superheat steam drying method and its drying device of a kind of sludge, pass through
The tail gas produced using drying sludge is exchanged heat with the liquid such as water or freon, methanol, and the water after heat exchange is heated
It is used for drying sludge afterwards, and the tail gas after exchanging heat becomes the saturation steam water interface that temperature is about 100 DEG C, by the saturated vapor of high temperature
Directly discharge wastes big energy after aqueous mixtures processing.
The A of Chinese patent CN 101823830 disclose sludge drying mechanism and the drying of a kind of superheated steam closed cycle
Method, the tail gas produced in drying process a part is used for into a predrying part is used for interior circulation, reduces energy consumption for drying.But
It is that the device is not recycled to the tail gas that pre-drying process is produced, and also the sensible heat of condensed water is not reclaimed.
The A of Chinese patent CN 102260033 and the A of CN 102276131 also disclose a kind of sludge indirect steam compression
Sludge is mixed in proportion with oil in drying means, drying process, its grade is improved by being compressed to indirect steam, due to two
There is incoagulable gas and compressed engine efficiency in secondary steam influences, and whole compression process energy loss is larger, cause energy consumption compared with
It is high；Drying process oil is mixed with sludge, although both are separated after drying, but is difficult to be completely separated both, Jin Erying
The recycling of sludge is rung.
The A of Chinese patent CN 101822933 disclose the repeatable superheat steam drying method and device utilized, utilize
The thought that energy multi-level is utilized, first order system uses pressure superheat steam drying, and its tail gas produced is dried for rear stage
System is used, the like.With the increase of series, drying system is become increasingly complex, equipment investment cost increase, and series is got over
It is poorer that the big temperature difference is gradually reduced drying effect, requires higher to security of system using pressure superheated steam.
Existing sludge superheated vapor exhaust steam residual heat Application way and device are difficult to fully recycle exhaust steam residual heat, pass through
Both vapor compression, which improves the extraneous factors such as the compressed engine efficiency of method, the exhaust steam purity of exhaust steam grade, influences larger, overall thermal efficiency
It is not high.In addition, dried sludge is handled using traditional sludge processing method mostly, it is difficult to sludge is carried out again sharp
With.
The content of the invention
In view of the above-mentioned problems of the prior art, a kind of sludge superheated vapor drying exhaust steam residual heat of present invention offer is double
Using device and method, the double utilization of exhaust steam residual heat progress that on the one hand it can be produced to sludge superheated vapor drying is prevented
Condensation is produced, drying efficiency is improved, it is energy-efficient；On the other hand dried sludge can be molded, the sludge after shaping exists
It can be used for preparing gardens, highway planting granulated fertilizer after drying, realize that recycling sludge is recycled.
To achieve these goals, the technical solution adopted by the present invention is：A kind of sludge superheated vapor dries exhaust steam residual heat
Double utilization device, including shaftless screw feeder, air valve, heater, Double shaft stirring drying machine, mud granule forming machine, net
Band drying machine, tail gas washing tower, cyclone separator（A、B）, blower fan（A、B）And heat exchanger, it is characterised in that：The shaftless screw
Feeder outer layer has a chuck, and chuck is provided with chuck air intake, chuck venthole and condensation-water drain, shaftless screw feeder
It is provided with steam drain；Shaftless screw feeder discharging opening, cyclone separator B discharging openings dry machine inlet with Double shaft stirring simultaneously
It is connected, Double shaft stirring discharge hole of drying machine, cyclone separator A discharging openings are connected with mud granule shaping machine inlet simultaneously, dirty
Mud granule-forming machine discharging opening is connected with mesh belt dry machine inlet, shaftless screw feeder, Double shaft stirring drying machine, sludge
Grain forming machine, mesh dryer formation logistics corridor.
Further, the heater outlet is connected by pipeline with Double shaft stirring drying machine steam inlet, Double shaft stirring
Drying machine steam drain is connected with cyclone separator A imports, and cyclone separator A ventholes are connected by pipeline with blower fan A imports,
Blower fan A outlets are divided into two-way by pipeline, all the way by being connected after air valve A with shaftless screw feeder chuck air intake, separately
All the way by being connected after air valve B with heater inlet, heater, Double shaft stirring drying machine, cyclone separator A, blower fan A and air valve
B formation interior circulation gas channels.
Further, the shaftless screw feeder steam drain and chuck venthole by pipeline simultaneously and cyclone separator
B imports are connected, and cyclone separator B ventholes are connected by pipeline with exchanger heat flow medium import, exchanger heat flow medium
Outlet is connected by pipeline with tail gas washing tower inlet exhaust gas, and shaftless screw feeder, cyclone separator B, heat exchanger, tail gas are washed
Wash tower and form outer gas channel.
Further, the heat exchanger cold flow media outlet is connected with blower fan B imports, blower fan B outlets and mesh dryer
Air inlet is connected, heat exchanger, blower fan, mesh dryer formation combination drying.
Further, described mesh dryer air outlet is connected with tail gas washing tower inlet exhaust gas.
Further, described heater inlet pipeline front end is provided with air valve C, pipeline and process after air valve C
Pipeline after air valve B converges and is connected with heater inlet.
The sludge superheated vapor that a kind of sludge superheated vapor dries the double utilization device of exhaust steam residual heat dries exhaust steam residual heat two
Weight Application way, the exhaust steam residual heat that sludge superheated vapor drying process is produced realizes the secondary utilization of step, it is characterised in that：
（1）The high temperature exhaust steam that sludge Double shaft stirring drying machine is produced is passed through shaftless screw feeder and sludge is preheated
Processing, it is to avoid sludge enters Double shaft stirring drying machine and produces condensation phenomenon, realizes the utilization for the first time of high temperature exhaust steam residual heat；
（2）By the further heat exchange utilization in vapour-gas heat exchanger by the exhaust steam of shaftless screw feeder, heating air is made
The thermal source that aftershaping granule sludge is dried is dried for sludge Double shaft stirring drying machine, second of utilization of exhaust steam residual heat is realized；
（3）The tail gas that vapour-gas heat exchanger and granule sludge drying process are produced is passed through tail gas washing tower, realizes dried
Journey non-pollution discharge.
The beneficial effects of the invention are as follows：
1. drying sludge is using superheated steam as dried medium, it is to avoid heated-air drying occurs under the high temperature conditions oxidation,
The danger such as decomposition, burning and blast, superheated steam heat and mass transfer coefficient is big, specific heat capacity big, and required mass flow is small, drying efficiency
Height, it is energy-efficient.
2. Double shaft stirring drying machine is dried one after the exhaust steam produced is separated by cyclone separator A dedustings by blower fan A
Exhaust steam is divided to return to Double shaft stirring drying machine, the exhaust steam after heating is reused for drying, realizes recycling for steam；
Remainder exhaust steam is pumped in shaftless screw feeder chuck to sludge raw material preheating, be effectively prevent and is produced dry initial stage
Condensation.
3. through the dried sludge with low moisture content of Double shaft stirring drying machine mud granule forming machine is entered to be molded sludge,
The sludge of shaping can be used for preparing gardens, highway planting granulated fertilizer after drying, realize innoxious, the minimizing of sludge
And recycling, the added value of sludge is improved, the characteristics of with sustainable development.
4. shaftless screw charger pre- thermogenetic steam and incoagulable gas separate laggard by cyclone separator B dedustings
Enter in heat exchanger, cold air after high-temperature gas heat exchange with being passed through mesh dryer, and mesh dryer is to the mud granule after shaping
Dried, effectively prevent the problem of sludge produces condensation in forming process and makes its moisture content increase.
5. whole drying device realizes the double utilization of exhaust steam residual heat, energy consumption is greatly reduced, it is energy-efficient.It is dried
" waste water " produced in journey enters sewage treatment plant and handled, and " waste gas " is discharged after tail gas washing tower is handled, and realizes zero dirty
Dye.
Brief description of the drawings
Fig. 1 is the drying device structural representation of the present invention.
Wherein, 1. shaftless screw feeder, 1-1,1-2,1-3,1-4,1-5,1-6 are respectively entering for shaftless screw feeder
Material mouth, chuck air intake, condensation-water drain, discharging opening, steam drain, chuck venthole, 2A, 2B, 2C be air valve, 3. heaters,
4. Double shaft stirring drying machine, 4-1,4-2,4-3,4-4 be respectively the charging aperture of Double shaft stirring drying machine, steam inlet, discharging opening,
Steam drain, 5. mud granule forming machines, 6. mesh dryers, 6-1,6-2,6-3,6-4 be respectively mesh dryer charging aperture,
Air inlet, discharging opening, air outlet, 7. tail gas washing towers, 8A, 8B are cyclone separator, and 9A, 9B are blower fan, 10. heat exchangers.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of sludge superheated vapor dries the double utilization device of exhaust steam residual heat, including shaftless screw feeder
1st, air valve（2A、2B、2C）, heater 3, Double shaft stirring drying machine 4, mud granule forming machine 5, mesh dryer 6, washing tail gas
Tower 7, cyclone separator (8A, 8B), blower fan (9A, 9B), heat exchanger 10.Shaftless screw feeder 1 is provided with charging aperture 1-1, gone out
Material mouth 1-4, steam drain 1-5, the outer layer of shaftless screw feeder 1 have a chuck, and chuck is provided with chuck air intake 1-2, condensed water
Export 1-3 and chuck venthole 1-6；The discharging opening 1-4 of shaftless screw feeder 1, cyclone separator 8B discharging openings are while and twin shaft
The charging aperture 4-1 of stirring drier 4 be connected, the discharging opening 4-3 of Double shaft stirring drying machine 4, cyclone separator 8A discharging openings simultaneously with dirt
The charging aperture of mud granule-forming machine 5 is connected, and the discharging opening of mud granule forming machine 5 is connected with the charging aperture 6-1 of mesh dryer 6, shaftless
Screw feeder 1, Double shaft stirring drying machine 4, mud granule forming machine 5, mesh dryer 6 are sequentially connected, and form logistics corridor；
The venthole 4-4 of Double shaft stirring drying machine 4 is connected with cyclone separator 8A imports, cyclone separator 8A ventholes by pipeline with
Blower fan 9A imports are connected, and blower fan 9A outlets are divided into two-way by pipeline, pass through air valve 2A and the chuck of shaftless screw feeder 1 all the way
Air intake 1-2 is connected, and another road is connected by air valve 2B with the import of heater 3, heater 3, Double shaft stirring drying machine 4, rotation
Wind separator 8A and blower fan 9A formation interior circulation gas channels；The steam drain 1-5 of shaftless screw feeder 1 and chuck venthole 1-6
It is connected simultaneously with cyclone separator 8B imports by pipeline, cyclone separator 8B ventholes pass through pipeline and the hot-fluid of heat exchanger 10
Medium entrance is connected, and the hot-fluid media outlet of heat exchanger 10 is connected by pipeline with the import of tail gas washing tower 7, forms outer gas circulation
Road；The cold flow media outlet of heat exchanger 10 is connected by pipeline with the air inlet 6-2 of mesh dryer 6, the air outlet of mesh dryer 6
6-4 is connected with the import of tail gas washing tower 7, heat exchanger 10, blower fan 9B, the formation combination drying of mesh dryer 6.
Sludge superheated vapor dry the double Application way of exhaust steam residual heat be by sludge superheated vapor drying process produce it is weary
Vapour waste heat realizes the secondary utilization of step.First, high temperature exhaust steam sludge Double shaft stirring drying machine 4 produced is passed through shaftless screw and added
Glassware 1 carries out the pre-heat treatment to sludge, it is to avoid sludge enters Double shaft stirring drying machine 4 and produces condensation phenomenon, realizes high temperature exhaust steam
Waste heat is utilized for the first time；Secondly, by by the exhaust steam of shaftless screw feeder 1, further heat exchange is sharp in vapour-gas heat exchanger 10
With heating air dries the thermal source that aftershaping granule sludge is dried as sludge Double shaft stirring drying machine 4, realizes exhaust steam residual heat
Second of utilization；Finally, tail gas vapour-gas heat exchanger 10 and granule sludge drying process produced is passed through tail gas washing tower 7, real
Existing drying process non-pollution discharge.
During work, air valve 2A, 2C are opened, steam is passed through to system, system is preheated.After system warm-up, open and add
Hot device 3 is heated to superheated steam, and steam becomes superheated steam after heating, by sludge after temperature reaches design temperature
Raw material is added from the charging aperture 1-1 of shaftless screw charger 1, and the steam in the chuck of shaftless screw feeder 1 is preheated to sludge,
Prevent that sludge from occurring condensation at the initial stage of drying and causes moisture content increase, cause drying time to extend, the sludge after preheating is from nothing
The discharging opening 1-4 of axle self-conveyor feed 1 enters Double shaft stirring drying machine 4 by the charging aperture 4-1 of Double shaft stirring drying machine 4.
Sludge moisture gradually evaporative removal under the stirring of Double shaft stirring drying machine 4 and superheated steam high-temperature heating, is produced
A large amount of steam, dried sludge enters in mud granule forming machine 5 from the discharging opening 4-3 of Double shaft stirring drying machine 4.Steam is from double
The steam drain 4-4 of axle stirring drier 4 enters in cyclone separator 8A, and after dedusting is separated, steam is after blower fan 9A guiding
It is divided into two-way, now opens air valve 2B, closes air valve 2C, it is dry that a part of steam enters progress circulation in Double shaft stirring drying machine 4
Dry, the later stage need not be passed through new superheated steam, and unnecessary steam is passed through in shaftless screw charger 1 by air valve 2A, to sludge
Raw material is preheated, and the first time for realizing exhaust steam residual heat utilizes.The solid now isolated from cyclone separator 8A enters
Into mud granule forming machine 5.
After steam in shaftless screw charger 1 is preheated to sludge, condensable gas are condensed into water, and incoagulable gas is from folder
Set venthole 1-6 is discharged into cyclone separator 8B.Now, the sludge part moisture evaporation after preheating, steam is from shaftless spiral shell
Revolve the steam drain 1-5 of charger 1 to enter in cyclone separator 8B, the gas separated by dedusting enters in heat exchanger 10, from whirlwind
The solid isolated in separator 8B is entered in Double shaft stirring drying machine 4, and the condensed water that warm is produced goes out from condensed water
Mouth 1-3 is discharged into sewage treatment plant.
Preheat excess steam and incoagulable gas temperature reduction, coercibility gas after the heat exchange of heat exchanger 10 that sludge is produced
Body is condensed into water, and incoagulable gas is passed through tail gas washing tower 9, emptied after treatment；Meanwhile, the tail that mesh dryer 6 is produced
Gas enters tail gas washing tower 9, empties after treatment.Whole process realizes " tail gas " non-pollution discharge.
The mud granule temperature reduction being molded by mud granule forming machine 5, easily condensation is produced when running into cold air.Profit
The excess steam produced with 10 pairs of preheating sludge of heat exchanger carries out heat exchange with air, the air temperature rise after heat exchange, heat
Air is passed through the mud granule drying of 6 pairs of shapings of mesh dryer under blower fan 9B guiding, prevents that condensation causes it to contain
The increase of water rate.Mud granule by drying can be used for preparing gardens, highway planting fertilizer, not only realize sludge harmless
Change, minimizing, the recycling for also achieving sludge are recycled, and walk sustainable development path.
Whole device and method realize the double utilization that sludge superheated vapor dries exhaust steam residual heat.It is right that drying process passes through
Exhaust steam residual heat is double using preventing from producing condensation in drying process, shortens drying time；Only need to be in initial rank in drying process
Section is passed through superheated steam, and later stage steam circulation is used, and is reduced the input of thermal source, is reduced energy consumption；With traditional sludge processing side
Method is different, and the sludge after being handled through the device can realize recycling sludge as preparation gardens, the raw material of highway planting fertilizer
Recycle；The waste water and waste gas produced in drying is discharged after treatment, realizes no pollution.
Claims (5)
1. a kind of sludge superheated vapor dries the double utilization device of exhaust steam residual heat, including shaftless screw feeder, air valve, heating
Device, Double shaft stirring drying machine, mud granule forming machine, mesh dryer, tail gas washing tower, cyclone separator A, cyclone separator
B, blower fan A, blower fan B and heat exchanger, it is characterised in that：Described shaftless screw feeder outer layer has a chuck, and chuck is provided with
Chuck air intake, chuck venthole and condensation-water drain, shaftless screw feeder are provided with steam drain；Described shaftless screw adds
Glassware discharging opening, cyclone separator B discharging openings are dried machine inlet with Double shaft stirring simultaneously and are connected, the discharging of Double shaft stirring drying machine
Mouth, cyclone separator A discharging openings are connected with mud granule shaping machine inlet simultaneously, mud granule forming machine discharging opening and guipure
Dry machine inlet to be connected, shaftless screw feeder, Double shaft stirring drying machine, mud granule forming machine, mesh dryer are formed
Logistics corridor；Described heater outlet is connected by pipeline with Double shaft stirring drying machine steam inlet, Double shaft stirring drying machine
Steam drain is connected with cyclone separator A imports, and cyclone separator A ventholes are connected by pipeline with blower fan A imports, blower fan A
Outlet is divided into two-way by pipeline, all the way by being connected after air valve A with shaftless screw feeder chuck air intake, another a-road-through
It is connected after crossing air valve B with heater inlet, heater, Double shaft stirring drying machine, cyclone separator A, blower fan A and air valve B are formed
Interior circulation gas channel；Described shaftless screw feeder steam drain and chuck venthole are by pipeline while and cyclone separator
B imports are connected, and cyclone separator B ventholes are connected by pipeline with exchanger heat flow medium import, exchanger heat flow medium
Outlet is connected with tail gas washing tower import, shaftless screw feeder, cyclone separator B, heat exchanger, tail gas washing tower formation outer gas
Circulation road.
2. a kind of sludge superheated vapor according to claim 1 dries the double utilization device of exhaust steam residual heat, it is characterised in that：
Described heat exchanger cold flow media outlet is connected with blower fan B imports, and blower fan B outlets pass through pipeline and mesh dryer air inlet phase
Connection, heat exchanger, blower fan, mesh dryer formation combination drying.
3. a kind of sludge superheated vapor according to claim 1 dries the double utilization device of exhaust steam residual heat, it is characterised in that：
Described mesh dryer air outlet is connected with tail gas washing tower import.
4. a kind of sludge superheated vapor according to claim 1 dries the double utilization device of exhaust steam residual heat, it is characterised in that：
Described heater inlet pipeline front end is provided with air valve C, and the pipeline after air valve C converges with the pipeline after air valve B
And be connected with heater inlet.
5. a kind of a kind of sludge superheated vapor for claim 1,2,3 or 4 dries the dirt of the double utilization device of exhaust steam residual heat
The double Application way of mud superheat steam drying exhaust steam residual heat, the exhaust steam residual heat that sludge superheated vapor drying process is produced realizes ladder
Level is secondary to be utilized, it is characterised in that：
（1）The high temperature exhaust steam that sludge Double shaft stirring drying machine is produced is passed through shaftless screw feeder and sludge is carried out at preheating
Reason, it is to avoid sludge enters Double shaft stirring drying machine and produces condensation phenomenon, realizes the utilization for the first time of high temperature exhaust steam residual heat；
（2）By the further heat exchange utilization in vapour-gas heat exchanger by the exhaust steam of shaftless screw feeder, heating air is used as dirt
Mud Double shaft stirring drying machine dries the thermal source that aftershaping granule sludge is dried, and realizes second of utilization of exhaust steam residual heat；
（3）The tail gas that vapour-gas heat exchanger and granule sludge drying process are produced is passed through tail gas washing tower, realize drying process without
Disposal of pollutants.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510681595.6A CN105254148B (en) | 2015-10-21 | 2015-10-21 | A kind of sludge superheated vapor dries the double utilization device and method of exhaust steam residual heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510681595.6A CN105254148B (en) | 2015-10-21 | 2015-10-21 | A kind of sludge superheated vapor dries the double utilization device and method of exhaust steam residual heat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105254148A CN105254148A (en) | 2016-01-20 |
| CN105254148B true CN105254148B (en) | 2017-08-08 |
Family
ID=55094154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510681595.6A Active CN105254148B (en) | 2015-10-21 | 2015-10-21 | A kind of sludge superheated vapor dries the double utilization device and method of exhaust steam residual heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105254148B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007316A (en) * | 2016-05-10 | 2016-10-12 | 吴万益 | Sludge drying treatment device |
| CN106517727A (en) * | 2016-12-26 | 2017-03-22 | 南昌航空大学 | Sludge two-grade united energy-saving drying device and method |
| CN109293212A (en) * | 2018-10-18 | 2019-02-01 | 南京龙源环保有限公司 | The joint processing system and processing method of municipal sludge and desulfurization wastewater |
| CN111397400B (en) * | 2020-03-26 | 2021-06-25 | 南昌航空大学 | Heat exchange and flash evaporation recycling device and method for waste steam waste heat generated in sludge superheated steam drying |
| CN112876016A (en) * | 2021-01-27 | 2021-06-01 | 东华工程科技股份有限公司 | Drying treatment system and method for high-viscosity sludge |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570388B (en) * | 2009-05-26 | 2010-11-03 | 华电滕州新源热电有限公司 | Harmless recycling treatment process for urban sludge |
| CN101774743B (en) * | 2010-01-26 | 2012-10-03 | 沈阳航空工业学院 | Latent heat recoverable multi-phase change sludge drying method and device |
| KR101189177B1 (en) * | 2011-02-16 | 2012-10-10 | 주식회사 디스텍 | Apparatus and method of a waste heat recovering for solid-liquid slurry from organic sludges |
| CN205133369U (en) * | 2015-10-21 | 2016-04-06 | 南昌航空大学 | Device is utilized to mud superheated steam drying exhaust steam waste heat two -fold |
-
2015
- 2015-10-21 CN CN201510681595.6A patent/CN105254148B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105254148A (en) | 2016-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105254147B (en) | A kind of sludge superheated vapor dries the triple utilization device and methods of exhaust steam residual heat | |
| CN105254148B (en) | A kind of sludge superheated vapor dries the double utilization device and method of exhaust steam residual heat | |
| CN103408213B (en) | Energy-saving off-gas self-lazy circular sludge drying system and application method thereof | |
| CN205133369U (en) | Device is utilized to mud superheated steam drying exhaust steam waste heat two -fold | |
| CN107473562A (en) | Utilize the sludge drying system and sludge drying method of used heat flue gas | |
| WO2011094904A1 (en) | Air-drying device for sludge | |
| CN101708942A (en) | Sludge drying system and using method thereof | |
| CN205133368U (en) | Triple devices that utilize of mud superheated steam drying exhaust steam waste heat | |
| CN208500724U (en) | Sludge dehumidifying heat pump drying equipment | |
| CN206385008U (en) | A kind of sludge two-stage drying device | |
| CN206476878U (en) | A kind of tray drier disk contact drying system | |
| CN106517726A (en) | Two-stage sludge drying device and method | |
| CN101585653B (en) | Method and device for reutilizing waste heat in sludge drying system | |
| CN207294571U (en) | Utilize the sludge drying system of waste heat flue gas | |
| CN110040937A (en) | A kind of heat pump low temperature sludge drying system | |
| CN206915976U (en) | A kind of sewage source heat pump and equipment associated with sludge drying | |
| CN201530772U (en) | System utilizing double-stage paddle dryers and drying sludge with superheated steam | |
| CN111153584A (en) | Two-stage method heat recycling sludge drying system and drying method thereof | |
| CN107673577B (en) | Double-spiral channel type heat exchange tube and sludge temperature rising and viscosity reducing device | |
| CN214383754U (en) | Device for recycling waste gas waste heat of superheated steam dryer | |
| CN104341084B (en) | For the energy-saving printing and dyeing sludge dehumidification system of cogeneration | |
| CN216347662U (en) | Material drying device with high circulating heat efficiency | |
| CN206276399U (en) | A kind of preparation system of giantreed biomass carbon adsorbent | |
| CN212741112U (en) | Two-stage method heat retrieval and utilization sludge drying device | |
| CN205974207U (en) | Energy recuperation type sludge drying system of burning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |