CN106517726A - Two-stage sludge drying device and method - Google Patents
Two-stage sludge drying device and method Download PDFInfo
- Publication number
- CN106517726A CN106517726A CN201611215546.4A CN201611215546A CN106517726A CN 106517726 A CN106517726 A CN 106517726A CN 201611215546 A CN201611215546 A CN 201611215546A CN 106517726 A CN106517726 A CN 106517726A
- Authority
- CN
- China
- Prior art keywords
- sludge
- fluid bed
- mesh
- pipeline
- air
- 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.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 81
- 238000001035 drying Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 13
- 230000004087 circulation Effects 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 62
- 239000008187 granular material Substances 0.000 claims description 31
- 238000007599 discharging Methods 0.000 claims description 29
- 230000008676 import Effects 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- 206010013786 Dry skin Diseases 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 33
- 230000000694 effects Effects 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a two-stage sludge drying device and method. The two-stage sludge drying device comprises an extruding forming machine, a fluidized bed, a cyclone separator, air valves (A and B), draught fans (A and B), a heater, a mesh-belt drier, a heat exchanger and a tail gas washing tower. The extruding forming machine, the fluidized bed and the mesh-belt drier are connected in sequence to form a sludge flowing passage. The cyclone separator, the air valve A, the draught fan A and the heater are connected in sequence to form a first-stage high-temperature drying air circulation passage. The air valve B, the heat exchanger, the draught fan B and the mesh-belt drier are connected in sequence for second-stage drying. The heat exchanger and an air outlet of the mesh-belt drier are connected with the tail gas washing tower. The two-stage sludge drying device has the beneficial effects that wet sludge is in contact with dried sludge powder and adsorbs the dried sludge powder after extrusion forming to eliminate the influence of sludge adhesion; evaporated moisture is heated into superheated steam to serve as a first-stage fluidizing drying medium, and the risks of burning and explosion in a hot-air environment are avoided; and excessive steam is subjected to heat exchange and is recycled for second-stage low-temperature drying, and energy conservation and environmental protection are realized.
Description
Technical field
The present invention relates to drying sludge field, and in particular to a kind of sludge two-stage drying device and method.
Background technology
As Re-search on Urbanization level is improved, urban wastewater treatment amount increasingly increases.By-product of the sludge as sewage disposal
Thing, with having a large capacity and a wide range, moisture content is high, the low feature of added value.Sludge components are complicated, contained heavy metal, microbial pathogens
Pollution is easily caused with Organic substance etc., in recent years, the maximum land-fill method of accounting can not be held by the restriction of the factors such as environmental protection
It is continuous.It is the effective means for realizing its innoxious, minimizing that sludge is dried.
During sludge is from high-moisture percentage drying to low-water-content, can gradually switch to viscous pasty state from initial fluid state,
Frangible brittle state is then changed to, dry powder is finally converted to.Numerous experimental shows exist during drying sludge
One stagnant zone（Moisture content 60% or so）, the interval sludge shows very strong bonding characteristic, and the sludge of adhesion is easily caused
Equipment blocking, corrosion, and bulk sludge bonding itself can cause heat transfer to be obstructed, and sludge internal moisture is difficult to evaporate
Come, affect drying effect.
Sludge superheated vapor drying is referred to and is directly contacted with sludge using overheated steam and go one kind of moisture removal to be dried
Mode, has the advantages that heat transfer coefficient is high, latent heat is big, for example, by 1 ton of moisture content, 80% sludge superheat steam drying to aqueous
Rate 50%, will produce 0.6 ton of high temperature exhaust steam, and exhaust steam phase transformation switchs to liquid and will release substantial amounts of heat, if this partial heat is entered
One step is recycled, and superheat steam drying will embody great energy-saving effect compared to traditional hot air drying.Additionally, overheated
Steam drying is carried out under oxygen-free environment, and non-oxidation burning, blast such as are caught fire at the danger.
The content of the invention
The problem that the present invention is present for prior art, there is provided a kind of sludge two-stage drying device and method, eliminates dirty
The negative effect that sticking problem in mud dry run brings, it is to avoid oxidation, burning under hot blast environment, explosion danger, while
Improve capacity usage ratio.
For achieving the above object, the technical solution used in the present invention is：A kind of sludge two-stage drying device, including extrusion into
Type machine, fluid bed, cyclone separator, air valve（A、B）, blower fan（A、B）, heater, heat exchanger, mesh-belt drier and tail gas washes
Wash tower, it is characterised in that：Be provided with sludge inlet at the top of the fluid bed, bottom is provided with discharging opening, the upper left corner of fluid bed with
The lower left corner is respectively equipped with gas outlet and air inlet, and side is provided with siccative import, and bottom is provided with porous taper web plate, in porous taper
The control valve of control discharging speed is provided between web plate and discharging opening.Band extrusion molding machine discharging opening is connected with fluid bed its top feed mouth
Connect, fluidized-bed bottom discharging opening is connected with mesh-belt drier charging aperture, band extrusion molding machine, fluid bed, mesh-belt drier according to
Secondary connection forms sludge flow passage；Fluid bed upper left corner gas outlet is connected with cyclone separator air inlet, and cyclone separator goes out
QI KOU is divided into two branch roads after pipeline, and branch road Jing air valves A therein is connected with blower fan A imports, and blower fan A outlets are by pipeline
It is connected with heater inlet, heater outlet is connected with fluid bed lower left corner air inlet by pipeline, fluid bed, cyclonic separation
Device, air valve A, blower fan A, heater are sequentially connected the circulation of air flow path for constituting one-level high temperature drying；Cyclone separator gas outlet
Another branch road Jing air valves B after pipeline is connected with exchanger heat flow medium import, and heat exchanger cold flow media outlet is by pipe
Road is connected with blower fan B imports, and blower fan B outlets are connected with mesh-belt drier air inlet by pipeline, air valve B, heat exchanger, blower fan
B, mesh-belt drier are sequentially connected two grade low-temp dry gas stream paths of composition.
Further, cyclone separator discharging opening is connected with the siccative import of fluid bed side by pipeline.
Further, mesh-belt drier discharging opening is divided into two branch roads by pipeline, wherein a branch road and fluid bed side
Siccative import connects.
Further, the pipeline for connecting the outlet of exchanger heat flow medium is converged with the pipeline for being connected mesh-belt drier air outlet
Merging is connected with tail gas washing tower air inlet.
A kind of sludge two-stage drying meanss of sludge two-stage drying device, eliminate the sticking problem band during drying sludge
The negative effect for coming, it is to avoid oxidation, burning under hot blast environment, explosion danger, improves capacity usage ratio, it is characterised in that：
（1）Wet mud falls from fluid bed its top feed mouth Jing after band extrusion molding machine makes little particle, with circulation in the fluid bed
The dewatered sludge powder contact absorption that air-flow is blown afloat upwards, powder dewatered sludge are wrapped in wet mud particle exterior surface and form cladding
Layer, obtains a kind of mud granule of wet inside and dry outside；
（2）To dewatered sludge diffusion into the surface, mud granule is promptly preliminary in fluid bed to flow the mud granule internal moisture for obtaining
Change drying, the moisture for evaporating in circulating current path through heater post-heating into high temperature super heated steam, as one-level high temperature
Dry fluidized drying medium；
（3）Mud granule in fluid bed after one-level fluidized drying is dry into net belt type from bottom discharge mouth via control valve
Superheated steam part accumulation in one-level dry gas stream peripheral passage more than needed is led to heat exchanger by a branch road by dry machine
Heat exchange, the hot blast of formation is passed through mesh-belt drier carries out two grade low-temp dryings to sludge；
（4）A part of sludge of the sludge and mesh-belt drier discharging opening of cyclone separator discharging opening is sent by pipeline respectively
Fluidized bed side siccative import, as dewatered sludge powder and wet mud granule Contact-sorption；
（5）Incoagulable gas after heat exchanger exchanges heat and two grade low-temp dry run of mesh-belt drier sludge are produced
Tail gas be simultaneously passed through tail gas washing tower, realize that emission is pollution-free.
The invention has the beneficial effects as follows：
1. the dewatered sludge powder contact absorption that wet mud falls from fluid bed its top feed mouth Jing after extruded moulding and kicks up, forms
Mud granule wet inside and dry outside, dry contact is between granule and between granule and equipment, effectively eliminate be dried in because
Equipment blocking that sludge adhesion is caused, etching problem, at the same time, mud granule internal moisture to dewatered sludge diffusion into the surface, by
In the Mass and heat transfer efficiency high of superheated steam contact drying, mud granule is big with the contact area of fluidized drying medium, heat exchange speed
Degree is fast, and granule top layer is dried rapidly in the microwave dryer, and the dry pellicle of porous of generation is due to the poor further expansion that can promote moisture of moist gradient
Dissipate and then be dried, it is to avoid particle aggregation, drying effect is good.
2. the moisture that mud granule is evaporated is heated into superheated steam as doing that one-level is dried by circulation of air flow path
Dry medium, with specific heat capacity it is big, heat transfer efficiency is high, latent heat is big the features such as, when being dried, required mass flow is little, without the need for extra steaming
There is equipment in vapour, while being avoided that dewatered sludge dust occurs in hot blast environment in fluid bed oxidizing fire, blast fire hazard.
3. the superheated steam part accumulation in one-level dry gas stream peripheral passage more than needed is led to by a branch road
Heat exchanger, superheated steam are mutually changed into liquid and release substantial amounts of heat, and cold air is heated into hot blast and is passed through by the heat for reclaiming that exchanges heat
Mesh-belt drier carries out two grade low-temp dryings to sludge, realizes energy recycling, and two grade low-temps are dried and prevent sludge
Condensation problem of the grain from after fluid bed discharging, meanwhile, low temperature environment avoids the problem that sludge incineration produces two English.
4. the incoagulable gas after heat exchanger heat exchange, and the tail gas of mesh-belt drier is each led at tail gas washing tower
Discharged after reason again, it is free from environmental pollution.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure, 1- band extrusion molding machines, 2- fluid beds, 3- cyclone separator, 4A, 4B- air valve, 5A, 5B- blower fan, 6- heating
Device, 7- heat exchangers, 8- mesh-belt driers, 9- tail gas washing towers.
Wherein, 2-1,2-2,2-3,2-4,2-5,2-6,2-7 respectively fluid bed its top feed mouth, fluid bed upper left corner goes out
QI KOU, the siccative import of fluid bed side, fluid bed lower left corner air inlet, fluidized-bed bottom discharging opening, control valve, porous conic net
Plate.8-1,8-2,8-3,8-4 are respectively mesh-belt drier charging aperture, mesh-belt drier discharging opening, mesh-belt drier and enter
Air port, mesh-belt drier air outlet.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of sludge two-stage drying device, including band extrusion molding machine 1, fluid bed 2, cyclone separator 3, gas
Valve（4A、4B）, blower fan（5A、5B）, heater 6, heat exchanger 7, mesh-belt drier 8, tail gas washing tower 9.Set at the top of fluid bed
There is sludge inlet 2-1, bottom is provided with discharging opening 2-5, and the upper left corner and the lower left corner of fluid bed are respectively equipped with gas outlet 2-2 and enter
QI KOU 2-4, side are provided with siccative import 2-3, and bottom is provided with porous taper web plate 2-7, in porous taper web plate 2-7 and discharging opening
The control valve 2-6 of control discharging speed is provided between 2-5.Band extrusion molding machine discharging opening is connected with fluid bed its top feed mouth 2-1,
Fluidized-bed bottom discharging opening 2-5 is connected with mesh-belt drier charging aperture 8-1, and band extrusion molding machine 1, fluid bed 2, net belt type are dried
Machine 8 is in turn connected to form sludge flow passage；Fluid bed upper left corner gas outlet 2-2 is connected with the air inlet of cyclone separator 3, rotation
The gas outlet of wind separator 3 is divided into two branch roads after pipeline, and branch road Jing air valves 4A therein is connected with blower fan 5A imports, wind
Machine 5A outlets are connected with the import of heater 6 by pipeline, and the outlet of heater 6 is by pipeline and fluid bed lower left corner air inlet
2-4 connects, and fluid bed 2, cyclone separator 3, air valve 4A, blower fan 5A, heater 6 are sequentially connected the gas for constituting one-level high temperature drying
Stream peripheral passage；Another branch road Jing air valve 4B of 3 gas outlet of cyclone separator after pipeline and 7 hot-fluid medium entrance of heat exchanger
Connection, heat exchanger cold flow media outlet are connected with blower fan 5B imports by pipeline, and blower fan 5B outlets are done with net belt type by pipeline
Dry machine air inlet 8-3 connections, air valve 4B, heat exchanger 7, blower fan 5B, mesh-belt drier 8 are sequentially connected two grade low-temps of composition and are dried
Current path.3 discharging opening of cyclone separator is connected with fluid bed side siccative import 2-3 by pipeline.Mesh-belt drier goes out
Material mouth 8-2 is divided into two branch roads by pipeline, wherein a branch road is connected with fluid bed side siccative import 2-3.Connection heat exchanger 7 is warm
The pipeline of flow medium outlet is converged with the pipeline for being connected mesh-belt drier air outlet 8-4 and is connected with tail gas washing tower import 9.
The two-stage drying meanss of sludge two-stage drying device, it is negative that the sticking problem during elimination drying sludge brings
Affect, it is to avoid oxidation, burning under hot blast environment, explosion danger, improve capacity usage ratio.First, after wet mud extruded moulding
Fall from fluid bed its top feed mouth 2-1, adsorb to the dewatered sludge powder contact that mountain is kicked up with circulating current, form wet inside and dry outside
Mud granule；Secondly, the mud granule of wet inside and dry outside fluidizes rapid fluidized drying, the water for evaporating in bed 2 in superheated steam
Point in circulation of air flow path after heater 6, the dried medium that high temperature super heated steam is dried as one-level is heated to form；The
Three steps, during one-level is dried, part accumulation superheated steam more than needed causes heat exchanger 7 and exchanges heat, and cold air is heated into hot blast and is led to
Enter mesh-belt drier 8 carries out two grade low-temp dryings to sludge；4th step, the sludge and net belt type of the outlet of cyclone separator 3
A part of sludge of discharge hole of drying machine 8-2 sends into fluid bed side siccative import by pipeline respectively, used as dewatered sludge powder
With wet mud granule Contact-sorption；Finally, by the incoagulable gas after heat exchanger 7 exchanges heat and mesh-belt drier air-out
The tail gas of mouth 8-4 is passed through tail gas washing tower process.
In practical operation, wet mud is entered from 1 charging aperture of band extrusion molding machine, is elongate in shape by extrusion molding, then Jing
Become fine granularity after crossing truncation, fine granularity sludge falls into fluid bed 2 from fluid bed its top feed mouth 2-1.Hop to it
When dry, air valve 4B and control valve 2-6 be first shut off, air valve 4A is opened, blower fan 5A opened and heater 6 is entered working condition, to
Some dewatered sludge powder are previously added in 2 side siccative import 2-3 of fluid bed.By fluid bed 2, cyclone separator 3, air valve 4A,
Inside the closed system that blower fan 5A and heater 6 are connected to form by pipeline, initial medium is air, is made in blower fan 5A circulations
The hot blast of high temperature is heated to form with lower air, the dewatered sludge powder in 2 side siccative import 2-3 of fluid bed is driven in circulating current
Under kick up upwards, meet with the wet mud granule fallen into from 2 its top feed mouth 2-1 of fluid bed, dewatered sludge powder and wet mud
Grain Contact-sorption, powder dewatered sludge are wrapped in wet mud particle exterior surface and form clad, obtain a kind of dirt of wet inside and dry outside
Mud granule, is dry contact between granule and between granule and equipment.Effectively eliminate in being dried because sludge adhesion is caused
Equipment blocking, etching problem.
After being dried a period of time, the oxygen in the one-level dry gas stream peripheral passage of closing is consumed with sludge incineration at high temperature
To the greatest extent, system becomes oxygen-free environment.At the same time, under high temperature drying medium, the mud granule of wet inside and dry outside is fast in fluid bed 2
Fast ground tentatively fluidized drying, mud granule internal moisture is to dewatered sludge diffusion into the surface and is evaporated, and the moisture for steaming is in one-level
Dry gas stream peripheral passage is heated to form the fluidized drying medium that high temperature super heated steam is dried as one-level after heater 6,
Due to the Mass and heat transfer efficiency high of superheated steam contact drying, mud granule is big with the contact area of fluidized drying medium, heat exchange
Speed is fast, and granule top layer is dried rapidly in the microwave dryer, and the dry pellicle of porous of generation can promote the further of moisture as moist gradient is poor
Diffusion is further dried.The sludge isolated from 3 discharging opening of cyclone separator enters into 2 side siccative import 2-3 of fluid bed.
As drying is carried out, the superheated steam in one-level dry gas stream peripheral passage is cumulative, as superheated steam is done
Dry to have the advantages that specific heat capacity is big, heat transfer efficiency is high, latent heat is big, when being dried, required mass flow is little, and high temperature super heated steam occurs
Accumulate, have more than needed.Now, control valve 2-6 is opened, the mud granule in fluid bed 2 after vapourss one-level fluidized drying passes through
Control valve 2-6 enters mesh-belt drier 8 from bottom discharge mouth 2-5, opens air valve 4B, in one-level dry gas stream peripheral passage
Part accumulation superheated steam more than needed flow to heat exchanger 7 and exchanges heat, and cold air is heated into hot blast and is passed through mesh-belt drier 8 pairs
Mud granule carries out two grade low-temp dryings, realizes energy recycling, and two grade low-temps are dried and prevent mud granule from fluid bed 2
Condensation problem after discharging, meanwhile, low temperature environment avoids the problem that sludge incineration produces two English.Mesh-belt drier 8
A part of sludge of discharging opening 8-2 sends into 2 side siccative import 2-3 of fluid bed by pipeline.
The incoagulable gas and 8 two grade low-temp of mesh-belt drier produced after heat exchanger 7 exchanges heat is dried what is produced
Tail gas is passed through after tail gas washing tower 9 is processed simultaneously and discharges again, realizes that emission is pollution-free.
Claims (3)
1. a kind of sludge two-stage drying device, including band extrusion molding machine, fluid bed, cyclone separator, air valve A, air valve B, blower fan
A, blower fan B, heater, heat exchanger, mesh-belt drier and tail gas washing tower, it is characterised in that：It is provided with the top of the fluid bed
Sludge inlet, bottom are provided with discharging opening, and the upper left corner and the lower left corner of fluid bed are respectively equipped with gas outlet and air inlet, and side sets
There is siccative import, bottom is provided with porous taper web plate, control discharging speed is provided between porous taper web plate and discharging opening
Control valve；Band extrusion molding machine discharging opening is connected with fluid bed its top feed mouth, fluidized-bed bottom discharging opening and mesh-belt drier
Charging aperture connects, and band extrusion molding machine, fluid bed, mesh-belt drier are in turn connected to form sludge flow passage；Fluid bed upper left
Angle gas outlet is connected with cyclone separator air inlet, and cyclone separator gas outlet is divided into two branch roads after pipeline, and therein one
Branch road Jing air valves A is connected with blower fan A imports, and blower fan A outlets are connected with heater inlet by pipeline, and heater outlet is by pipe
Road is connected with fluid bed lower left corner air inlet, and fluid bed, cyclone separator, air valve A, blower fan A, heater are sequentially connected composition one
The circulation of air flow path of level high temperature drying；Another branch road Jing air valve B and heat exchanger of the cyclone separator gas outlet after pipeline
Hot-fluid medium entrance connects, and heat exchanger cold flow media outlet is connected with blower fan B imports by pipeline, and blower fan B outlets are by pipeline
It is connected with mesh-belt drier air inlet, air valve B, heat exchanger, blower fan B, mesh-belt drier are sequentially connected two grade low-temps of composition
Dry gas stream path.
2. a kind of sludge two-stage drying device according to claim 1, it is characterised in that：（1）The mesh-belt drier
Discharging opening is divided into two branch roads by pipeline, wherein a branch road is connected with the siccative import of fluid bed side, the cyclone separator goes out
Material mouth is connected with the siccative import of fluid bed side by pipeline；（2）Connect the pipeline of exchanger heat flow medium outlet and be connected net
The pipeline of band drier air outlet is converged and is connected with tail gas washing tower air inlet.
3. a kind of sludge two-stage drying meanss of a kind of sludge two-stage drying device for claim 1 and 2, its feature exist
In：
（1）Wet mud falls from fluid bed its top feed mouth Jing after band extrusion molding machine makes little particle, with circulation in the fluid bed
The dewatered sludge powder contact absorption that air-flow is blown afloat upwards, powder dewatered sludge are wrapped in wet mud particle exterior surface and form cladding
Layer, obtains a kind of mud granule of wet inside and dry outside；
（2）To dewatered sludge diffusion into the surface, mud granule is promptly preliminary in fluid bed to flow the mud granule internal moisture for obtaining
Change drying, the moisture for evaporating in circulating current path through heater post-heating into high temperature super heated steam, as one-level high temperature
Dry fluidized drying medium；
（3）Mud granule in fluid bed after one-level fluidized drying is dry into net belt type from bottom discharge mouth via control valve
Superheated steam part accumulation in one-level dry gas stream peripheral passage more than needed is led to heat exchanger by a branch road by dry machine
Heat exchange, the hot blast of formation is passed through mesh-belt drier carries out two grade low-temp dryings to sludge；
（4）A part of sludge of the sludge and mesh-belt drier discharging opening of cyclone separator discharging opening is sent by pipeline respectively
Fluidized bed side siccative import, as dewatered sludge powder and wet mud granule Contact-sorption；
（5）Incoagulable gas after heat exchanger exchanges heat and two grade low-temp dry run of mesh-belt drier sludge are produced
Tail gas be simultaneously passed through tail gas washing tower, realize that emission is pollution-free.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611215546.4A CN106517726A (en) | 2016-12-26 | 2016-12-26 | Two-stage sludge drying device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611215546.4A CN106517726A (en) | 2016-12-26 | 2016-12-26 | Two-stage sludge drying device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106517726A true CN106517726A (en) | 2017-03-22 |
Family
ID=58338798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611215546.4A Pending CN106517726A (en) | 2016-12-26 | 2016-12-26 | Two-stage sludge drying device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106517726A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970311A (en) * | 2019-04-22 | 2019-07-05 | 华能国际电力股份有限公司 | High-temperature steam fluidized bed sludge drying and blending combustion system and method suitable for coal-fired boiler |
| CN110526539A (en) * | 2019-09-03 | 2019-12-03 | 马鞍山中创环保科技有限公司 | A kind of sludge desiccation processing equipment and drying method for treating |
| CN111153584A (en) * | 2020-03-03 | 2020-05-15 | 江苏釜鼎干燥工程有限公司 | Two-stage method heat recycling sludge drying system and drying method thereof |
| CN113045169A (en) * | 2021-04-06 | 2021-06-29 | 河南城建学院 | Modularized sludge drying system based on solar heat utilization |
| CN118307174A (en) * | 2024-06-06 | 2024-07-09 | 南通爱可普环保设备有限公司 | Ekoduplex multi-effect energy-saving belt type sludge drying system and drying process |
Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1166740A (en) * | 1966-12-08 | 1969-10-08 | Dorr Oliver Inc | Fluidized Bed Combustion System for Organic Waste |
| GB1475036A (en) * | 1975-02-05 | 1977-06-01 | Ahlstroem Oy | Disposal of wet waste material by combustion in a fluidized bed |
| JPS62284118A (en) * | 1986-05-31 | 1987-12-10 | Mitsubishi Heavy Ind Ltd | Supply of sludge for fluidized bed type sludge combustion furnace |
| US5283959A (en) * | 1991-10-14 | 1994-02-08 | Tsukishima Kikai Kabushiki Kaisha | System for drying moist sludge |
| DE4401623A1 (en) * | 1994-01-20 | 1995-07-27 | Waldner Gmbh & Co Hermann | Sewage sludge or slurry dryer |
| AT1602U1 (en) * | 1996-09-11 | 1997-08-25 | Binder Co Ag | METHOD AND DEVICE FOR DRYING SLUDGE |
| DE10005165A1 (en) * | 2000-02-08 | 2001-08-16 | Netzsch Erich Holding | Method and device for drying pre-dewatered liquid to moist substances |
| JP2001294856A (en) * | 2000-04-13 | 2001-10-23 | Kawasaki Heavy Ind Ltd | Method for manufacturing ground improving material and equipment for the same |
| JP2005118778A (en) * | 2004-10-26 | 2005-05-12 | Kobelco Eco-Solutions Co Ltd | Apparatus and method for treating halogenated organic compound |
| WO2006136105A1 (en) * | 2005-06-21 | 2006-12-28 | Institute Of Engineering Thermophysics, Chinese Academy Of Sciences | A combined dryer and a method and an equipment for incinerating the wet sludge with the combined dryer |
| CN1931753A (en) * | 2006-09-27 | 2007-03-21 | 北京中科通用能源环保有限责任公司 | Sludge drying and incinerating treatment process |
| JP2009248038A (en) * | 2008-04-09 | 2009-10-29 | Mhi Environment Engineering Co Ltd | Method and system for treating sludge |
| CN102161561A (en) * | 2011-05-07 | 2011-08-24 | 南昌航空大学 | High-efficiency pollution-free municipal sludge superheated steam combined drying device |
| CN102643006A (en) * | 2012-05-09 | 2012-08-22 | 江苏中容环保有限公司 | Method for drying sewage sludge in fluidized bed reactor |
| CN202610084U (en) * | 2012-06-13 | 2012-12-19 | 山东天力干燥股份有限公司 | Pulse combustion inner heated fluidized bed sludge-drying system |
| CN103058490A (en) * | 2013-01-18 | 2013-04-24 | 哈尔滨工业大学 | Multi-stage inner circulating fluidized bed sludge drying and fluidized bed incinerating device and method |
| FI20135160A (en) * | 2013-02-22 | 2014-08-23 | Endev Oy | Circulation mass dryer and wet sludge drying method |
| CN104176902A (en) * | 2014-08-31 | 2014-12-03 | 华北电力大学（保定） | Fluidized bed sludge drying system |
| CN204174056U (en) * | 2014-08-29 | 2015-02-25 | 凤阳海泰科能源环境管理服务有限公司 | A kind of mud two-stage anhydration system |
| CN105152514A (en) * | 2015-09-23 | 2015-12-16 | 华南理工大学 | Municipal sludge three-section process drying method |
| CN105254147A (en) * | 2015-10-21 | 2016-01-20 | 南昌航空大学 | Triple utilization device and method for exhaust steam waste heat produced during superheat steam drying of sludge |
| 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 |
| CN206385008U (en) * | 2016-12-26 | 2017-08-08 | 南昌航空大学 | A kind of sludge two-stage drying device |
-
2016
- 2016-12-26 CN CN201611215546.4A patent/CN106517726A/en active Pending
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1166740A (en) * | 1966-12-08 | 1969-10-08 | Dorr Oliver Inc | Fluidized Bed Combustion System for Organic Waste |
| GB1475036A (en) * | 1975-02-05 | 1977-06-01 | Ahlstroem Oy | Disposal of wet waste material by combustion in a fluidized bed |
| JPS62284118A (en) * | 1986-05-31 | 1987-12-10 | Mitsubishi Heavy Ind Ltd | Supply of sludge for fluidized bed type sludge combustion furnace |
| US5283959A (en) * | 1991-10-14 | 1994-02-08 | Tsukishima Kikai Kabushiki Kaisha | System for drying moist sludge |
| DE4401623A1 (en) * | 1994-01-20 | 1995-07-27 | Waldner Gmbh & Co Hermann | Sewage sludge or slurry dryer |
| AT1602U1 (en) * | 1996-09-11 | 1997-08-25 | Binder Co Ag | METHOD AND DEVICE FOR DRYING SLUDGE |
| DE10005165A1 (en) * | 2000-02-08 | 2001-08-16 | Netzsch Erich Holding | Method and device for drying pre-dewatered liquid to moist substances |
| JP2001294856A (en) * | 2000-04-13 | 2001-10-23 | Kawasaki Heavy Ind Ltd | Method for manufacturing ground improving material and equipment for the same |
| JP2005118778A (en) * | 2004-10-26 | 2005-05-12 | Kobelco Eco-Solutions Co Ltd | Apparatus and method for treating halogenated organic compound |
| WO2006136105A1 (en) * | 2005-06-21 | 2006-12-28 | Institute Of Engineering Thermophysics, Chinese Academy Of Sciences | A combined dryer and a method and an equipment for incinerating the wet sludge with the combined dryer |
| CN1931753A (en) * | 2006-09-27 | 2007-03-21 | 北京中科通用能源环保有限责任公司 | Sludge drying and incinerating treatment process |
| JP2009248038A (en) * | 2008-04-09 | 2009-10-29 | Mhi Environment Engineering Co Ltd | Method and system for treating sludge |
| CN102161561A (en) * | 2011-05-07 | 2011-08-24 | 南昌航空大学 | High-efficiency pollution-free municipal sludge superheated steam combined drying device |
| CN102643006A (en) * | 2012-05-09 | 2012-08-22 | 江苏中容环保有限公司 | Method for drying sewage sludge in fluidized bed reactor |
| CN202610084U (en) * | 2012-06-13 | 2012-12-19 | 山东天力干燥股份有限公司 | Pulse combustion inner heated fluidized bed sludge-drying system |
| CN103058490A (en) * | 2013-01-18 | 2013-04-24 | 哈尔滨工业大学 | Multi-stage inner circulating fluidized bed sludge drying and fluidized bed incinerating device and method |
| FI20135160A (en) * | 2013-02-22 | 2014-08-23 | Endev Oy | Circulation mass dryer and wet sludge drying method |
| CN204174056U (en) * | 2014-08-29 | 2015-02-25 | 凤阳海泰科能源环境管理服务有限公司 | A kind of mud two-stage anhydration system |
| CN104176902A (en) * | 2014-08-31 | 2014-12-03 | 华北电力大学（保定） | Fluidized bed sludge drying system |
| CN105152514A (en) * | 2015-09-23 | 2015-12-16 | 华南理工大学 | Municipal sludge three-section process drying method |
| CN105254147A (en) * | 2015-10-21 | 2016-01-20 | 南昌航空大学 | Triple utilization device and method for exhaust steam waste heat produced during superheat steam drying of sludge |
| 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 |
| CN206385008U (en) * | 2016-12-26 | 2017-08-08 | 南昌航空大学 | A kind of sludge two-stage drying device |
Non-Patent Citations (2)
| Title |
|---|
| 盛洪产等: "循环流化床燃煤锅炉掺烧造纸污泥的运行特性分析", 《动力工程学报》 * |
| 马楠: "城市污水处理厂污泥热干化工程工艺技术及关键设备介绍", 《资源节约与环保》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970311A (en) * | 2019-04-22 | 2019-07-05 | 华能国际电力股份有限公司 | High-temperature steam fluidized bed sludge drying and blending combustion system and method suitable for coal-fired boiler |
| CN109970311B (en) * | 2019-04-22 | 2023-12-08 | 华能国际电力股份有限公司 | High-temperature steam fluidized bed sludge drying and blending combustion system and method suitable for coal-fired boiler |
| CN110526539A (en) * | 2019-09-03 | 2019-12-03 | 马鞍山中创环保科技有限公司 | A kind of sludge desiccation processing equipment and drying method for treating |
| CN111153584A (en) * | 2020-03-03 | 2020-05-15 | 江苏釜鼎干燥工程有限公司 | Two-stage method heat recycling sludge drying system and drying method thereof |
| CN113045169A (en) * | 2021-04-06 | 2021-06-29 | 河南城建学院 | Modularized sludge drying system based on solar heat utilization |
| CN113045169B (en) * | 2021-04-06 | 2022-06-07 | 河南城建学院 | Modularized sludge drying system based on solar heat utilization |
| CN118307174A (en) * | 2024-06-06 | 2024-07-09 | 南通爱可普环保设备有限公司 | Ekoduplex multi-effect energy-saving belt type sludge drying system and drying process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206385008U (en) | A kind of sludge two-stage drying device | |
| CN106517726A (en) | Two-stage sludge drying device and method | |
| CN105254147B (en) | A kind of sludge superheated vapor dries the triple utilization device and methods of exhaust steam residual heat | |
| CN104132525B (en) | Powder material is dried cooling integration equipment | |
| CN206204129U (en) | Rotary wheel dehumidifying heat pump whirlwind sludge dry system | |
| CN107473562A (en) | Utilize the sludge drying system and sludge drying method of used heat flue gas | |
| CN108585411A (en) | A kind of sludge drying system based on heat pump techniques | |
| CN205874188U (en) | Heat pump dehumidification circulation system | |
| CN106957139A (en) | A kind of low-temperature sludge drying treatment system | |
| CN101565263A (en) | Sludge superheated vapor drying system of two-stage paddle dryer and drying process thereof | |
| CN105254148B (en) | A kind of sludge superheated vapor dries the double utilization device and method of exhaust steam residual heat | |
| CN103575081B (en) | Fermented feed drying method | |
| WO2017036280A1 (en) | Vented heat pump dryer | |
| CN106766818B (en) | Energy-saving efficient airflow dryer for Yi medicine extracts and drying method thereof | |
| CN208545289U (en) | A kind of sludge drying system based on heat pump techniques | |
| CN103575082B (en) | Fermented feed drying system | |
| CN205133368U (en) | Triple devices that utilize of mud superheated steam drying exhaust steam waste heat | |
| CN205133369U (en) | Device is utilized to mud superheated steam drying exhaust steam waste heat two -fold | |
| CN207294571U (en) | Utilize the sludge drying system of waste heat flue gas | |
| CN207751300U (en) | Heat pump spray dryer | |
| CN206033537U (en) | Heat pump drying system | |
| CN107673577B (en) | Double-spiral channel type heat exchange tube and sludge temperature rising and viscosity reducing device | |
| CN206783513U (en) | The thermal energy step reutilization system of sludge drying | |
| CN216918988U (en) | Serial-type high low temperature sludge drying device | |
| CN207035756U (en) | A kind of heat-pump dehumidification drying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |
|
| WD01 | Invention patent application deemed withdrawn after publication |