CN207130130U - Fluid bed drying device - Google Patents
Fluid bed drying device Download PDFInfo
- Publication number
- CN207130130U CN207130130U CN201720773557.8U CN201720773557U CN207130130U CN 207130130 U CN207130130 U CN 207130130U CN 201720773557 U CN201720773557 U CN 201720773557U CN 207130130 U CN207130130 U CN 207130130U
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- CN
- China
- Prior art keywords
- fluid bed
- passage
- drying device
- emulsion zone
- bed drying
- 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.)
- Withdrawn - After Issue
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- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The utility model provides a kind of fluid bed drying device, mainly solves the problems, such as that from high-temperature particle burning easily occurs for prior art so as to cause accident occurs；Meanwhile if using medium temperature particle under the technical scheme framework that prior art provides, the problem of sludge drying being caused not up to standard.The fluid bed drying device can use medium temperature solid particle heat carrier to carry out desiccation, job safety accident rate is reduced to 0, drastically increase the security of wet mud drying.Meanwhile the fluid bed drying device properly settled that medium temperature particle and dewatered sludge be inflammable and grain flux greatly with inlet and outlet material position difference can not excessive, the fluidized gas scale of construction should not be too big contradiction.
Description
Technical field
The utility model is a kind of fluid bed drying device, it is particularly a kind of using medium temperature particle carry out wet sludge anhydration and
Join multichannel medium temperature particle heat carrier sludge fluid bed drying device.
Background technology
Sludge fluid bed drying device using solid particle as heat carrier makees heat carrier than using conduction oil, steam
Sludge fluid bed drying device has a many advantages, but a good particle heat carrier sludge fluid bed drying device need to meet sludge,
The characteristic of particle and fluid bed.
Patent CN203007102U gives a kind of particle heat carrier sludge fluid bed drying device, except using fluid unit
General emulsion zone, settling section, outside air-distribution device, its essential characteristic has：600-1000 DEG C of high-temperature particle, single feeding point；Edge
The vertical section in Flow of Goods and Materials direction is trapezoidal and lateral surfaces length-width ratio 5-10.The defects of larger be present in features described above.
(1) 600-1000 DEG C of high-temperature particle, the defects of single feeding point；
The dry ash free basis volatile matter content of domestic sludge is up to 85% or so, far above most incendive coal-lignite
And jet coal, approached with oil shale, belong to explosive fuel, test shows that dewatered sludge catches fire at 400 DEG C, and can at 600 DEG C
After-flame.Heat source temperature is below 300 DEG C in the general fluid bed drying device run, even if temperature is not higher than ignition temperature,
But even detonation of having paid special attention to avoid catching fire.The particle of particle heat carrier sludge fluid bed drying device enters temperature and particle
Flow is relevant, and substantially grain flux and particle out temperature difference are in inverse ratio, and big temperature difference can reduce grain flux, but enter
Mouth temperature is higher, and the possibility for even detonation of catching fire is bigger.
The patent applicant proposes to be up to 600-1000 DEG C of particle as thermal source to wet by the use of take out from combustion furnace, temperature
Sludge carries out desiccation, firstly, since the particle temperature is high, causes feeding point limited amount, therefore the shape easily near feeding point
Into high-temperature region, so as to cause herein wet mud burning easily occurs or even explodes；Meanwhile wet mud enters from temperature end, due to water
Point rapid evaporation, particle can burst rapidly, and a large amount of fine particles can be rapidly completed drying, once dry out, then it is heated will
It is rapidly heated, further increase is dangerous.
(2) the defects of vertical section in Flow of Goods and Materials direction is trapezoidal and lateral surfaces length-width ratio 5-10；
The patent applicant requires that the vertical section in Flow of Goods and Materials direction is trapezoidal and lateral surfaces length-width ratio 5-10, carefully grows
Channel requirements particle average transverse translational speed be more than 0.05m/s, thus it requires fluidizing velocity is at a relatively high, power is quite big,
Standard state fluidizing velocity 0.1-0.4m/s is inadequate.
Utility model content
The utility model provides a kind of fluid bed drying device, mainly solves prior art and is easily fired from high-temperature particle
The problem of burning so as to cause accident occurs；Meanwhile if using medium temperature particle under the technical scheme framework that prior art provides,
The problem of sludge drying being caused not up to standard.
Particular technique solution of the present utility model is as follows：
The fluid bed drying device includes at least two passages in parallel, in each passage at the top of dilute-phase zone or above dilute-phase zone
At least one wet mud import is provided with, passage emulsion zone is provided with least one solid particle heat carrier and a material goes out
Mouthful, each interchannel carries out physical separation, each passage emulsion zone bottom in the middle part of emulsion zone to emulsion zone bottom along Flow of Goods and Materials direction
Portion's width is less than emulsion zone top width, and each passage emulsion zone face width sum is more than sludge and flowed with solid particle heat carrier
The length of flow in direction；Difference in height between the solid particle heat carrier import and air inlet below emulsion zone should be less than close phase
The 3/4 of height when area's material is static, it is no more than 10cm with side wall distance.
Preferably, each passage dilute phase sector width sum is sludge and length of flow of the solid particle heat carrier in passage
1.5~3 times.
Preferably, number of channels in parallel is 2-6.
Preferably, the import of solid particle heat carrier is 1-3 in each passage.
Preferably, each passage is that height is 100-400 millis perpendicular to the vertical section bottom of solid particulate matter direction of flow
The rectangle of rice, thereon to be trapezoidal, then common emulsion zone and dilute-phase zone are merged into by each passage upwards.
The utility model has the advantage of：
The fluid bed drying device can use medium temperature solid particle heat carrier to carry out desiccation, make job safety accident rate
0 is reduced to, drastically increases the security of wet mud drying.
Meanwhile the fluid bed drying device properly settled that medium temperature particle and dewatered sludge be inflammable and grain flux greatly with disengaging
Mouthful material position difference can not excessive, the fluidized gas scale of construction should not be too big contradiction.
Brief description of the drawings
Fig. 1 is the utility model structural front view；
Fig. 2 positions the utility model structural side view.
Embodiment
The principle of the utility model institute foundation is：It is required that solid particle heat carrier inlet point wants multiple spot, scattered, undercurrent to become a mandarin
Change the region that back-mixing is most strong in bed.
Multiple spot, disperse specifically to realize by the way of subchannel processing and solid particle heat carrier branch enter.And
Undercurrent is sent into the region that back-mixing is most strong in fluid bed and specifically referred to：Inlet point is descending below the middle part of fluid bed emulsion zone
Area, solid particle heat carrier flow downward after entering, and are then raised bubble and emulsion packet drives, reach emulsion zone surface
When, with neighboring particles temperature difference less than 100 DEG C.
Wet mud feeds to form the region that back-mixing is most strong in fluid bed with solid particle heat carrier in the same area, here
It is fluid bed endoparticle temperature highest and sludge moisture content highest region, under fluid bed granulate effect, wet mud particle is quick-fried
Multiple smaller particles are cleaved into, moisture evaporates rapidly, and produced steam significantly strengthens fluid mapper process, and it is most strong to form back-mixing in fluid bed
Strong region.The fluid bed granulate longitudinal diffusion coefficient of active fluidization is big, but horizontal proliferation is slow, to realize that an endoparticle flowing must
Must be poor by controlling level, fluidized bed height difference senior general causes cloth wind uneven, so particle heat carrier sludge fluid bed is done
It should be wide and short to change device, it is impossible to grown using thin.But emulsion zone bottom area is excessive, the fluidized gas scale of construction is big, and power consumption is big,
For this using multiple passages with trapezoid cross section.
Based on above-mentioned principle, solid particle heat carrier is absorbed heat out of combustion furnace used by the utility model, but
The flue gas heat for leaving burner hearth is absorbed, therefore the temperature of solid particle heat carrier is 200-500 DEG C.
Specifically, method of the present utility model is specifically：
First, the solid particle heat carrier that temperature is 200 DEG C -500 DEG C is fed for wet dirt by multiple feed points
The emulsion zone entrance point that mud is dried；While solid particle heat carrier is fed, wet mud to be dried, wet mud are fed
By self gravitation successively by entering emulsion zone entrance point above dilute-phase zone, after dilute-phase zone；Wet mud below dilute-phase zone, it is close
Phase region or emulsion zone carry out heat exchange with solid particle heat carrier, and complete drying, then pass through the discharging of the emulsion zone port of export
Mouth outflow.
Feed point should be less than emulsion zone material into the difference in height between air inlet below the import of emulsion zone and emulsion zone
The 3/4 of height when static, it is no more than 10cm with side wall distance, i.e. undercurrent feeds descender.
The wet mud fluid bed drying device includes at least two passages in parallel, in each passage at the top of dilute-phase zone or dilute-phase zone
Top is provided with least one wet mud import, and passage emulsion zone is provided with least one particle heat carrier and a material
Outlet, each interchannel carry out physical separation, each passage emulsion zone in the middle part of emulsion zone to emulsion zone bottom along Flow of Goods and Materials direction
Bottom width is less than emulsion zone top width, and each passage emulsion zone face width sum is more than sludge and particle heat carrier flowing side
To length of flow；Difference in height below the solid particle heat carrier import and emulsion zone between air inlet should be less than emulsion zone
The 3/4 of height when material is static, it is no more than 10cm with side wall distance.
Wet mud falls to forming passage, and number of channels is 1 with step 1 feed point ratio of number:1~5；Number of channels is main
The Cost Problems that the factor of consideration is the uniformity of heat exchange and multiple spot is set, i.e., on the premise of guarantee is relatively uniform rationally
Selection feed point quantity.
Passage overall width is more than wet mud length of flow, and the requirement of this length and width is in principal portion it is stated that and considering
To operation field space and the reasonability being entirely laid out, each passage dilute phase sector width sum is sludge and solid particle heat carrier
1.5~3 times of length of flow in passage.
Structure of the present utility model is described in detail below in conjunction with accompanying drawing：
As shown in Figure 1 and Figure 2, the fluid bed drying device (shows including at least two passages 1 in parallel in view of actual job
Field space, and the rationality that is involutory of structure, passage are generally 2-6), each passage specific 1 refers to from wet mud import
Hold the space that the port of export is formed, the top of dilute-phase zone 5 or the top of dilute-phase zone 5 are provided with least one wet mud in each passage
Import 3, each passage 1 divide since the top of emulsion zone 4 or at least from the middle part of emulsion zone 4 away from physics is started on emulsion zone bottom side
Every each bottom of passage emulsion zone 4 is less than the top width of dilute-phase zone 5 with width, and each width sum of passage dilute-phase zone 5 is more than wet mud
Length of flow in passage 1；Emulsion zone 4 in each passage 1 is additionally provided with least one solid particle heat carrier import 6；Gu
Difference in height below body particle heat carrier import 6 and emulsion zone between air inlet 7 should be less than the material of emulsion zone 4 it is static when height
3/4, it is no more than 10cm with side wall distance.
The import of solid particle heat carrier is vertical with discharge port end side wall, the vertical section perpendicular to granule materials flow direction
Bottom is the rectangle that height is 100-400 millimeters, and thereon to be trapezoidal, then upwards, each passage merges into common emulsion zone 4 and dilute
Phase region 5.
When emulsion zone material static height is more than 1 meter, particle average transverse translational speed is less than 0.01m/s, inlet and outlet
Material position difference is no more than the 10% of average material position.
As described above, a good particle heat carrier sludge fluid bed drying device key be to properly settle high-temperature particle with
Dewatered sludge is inflammable and grain flux greatly with inlet and outlet material position difference can not excessive, the fluidized gas scale of construction should not be too big contradiction.
Claims (5)
- A kind of 1. fluid bed drying device, it is characterised in that：Include at least two passages in parallel, in each passage at the top of dilute-phase zone or It is provided with least one wet mud import above dilute-phase zone, passage emulsion zone is provided with least one solid particle heat carrier With a material outlet, each interchannel carries out physical separation in the middle part of emulsion zone to emulsion zone bottom along Flow of Goods and Materials direction, respectively Passage emulsion zone bottom width is less than emulsion zone top width, and each passage emulsion zone face width sum is more than sludge and solid The length of flow of grain heat carrier flow direction；Height below the solid particle heat carrier import and emulsion zone between air inlet Difference should be less than emulsion zone material it is static when height 3/4, with side wall distance be no more than 10cm.
- 2. fluid bed drying device according to claim 1, it is characterised in that：Each passage emulsion zone face width sum For sludge and 1.5~3 times of the length of flow of solid particle heat carrier flow direction.
- 3. fluid bed drying device according to claim 1, it is characterised in that：The number of channels in parallel is 2-6.
- 4. fluid bed drying device according to claim 1, it is characterised in that：Solid particle heat carrier enters in each passage Mouth is 1-3.
- 5. fluid bed drying device according to claim 1, it is characterised in that：Each passage is perpendicular to solid particle material The vertical section bottom of flow direction is the rectangle that height is 100-400 millimeters, thereon to be trapezoidal, then is merged into upwards by each passage Common emulsion zone and dilute-phase zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720773557.8U CN207130130U (en) | 2017-06-29 | 2017-06-29 | Fluid bed drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720773557.8U CN207130130U (en) | 2017-06-29 | 2017-06-29 | Fluid bed drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207130130U true CN207130130U (en) | 2018-03-23 |
Family
ID=61632261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720773557.8U Withdrawn - After Issue CN207130130U (en) | 2017-06-29 | 2017-06-29 | Fluid bed drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207130130U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311424A (en) * | 2017-06-29 | 2017-11-03 | 俞国豪 | Wet sludge anhydration method and fluid bed drying device |
| CN115232649A (en) * | 2022-09-19 | 2022-10-25 | 浙江百能科技有限公司 | Furnace body system based on double fluidized bed pyrolysis process and manufacturing method thereof |
-
2017
- 2017-06-29 CN CN201720773557.8U patent/CN207130130U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311424A (en) * | 2017-06-29 | 2017-11-03 | 俞国豪 | Wet sludge anhydration method and fluid bed drying device |
| WO2019001512A1 (en) * | 2017-06-29 | 2019-01-03 | 俞国豪 | Wet sludge drying method and fluidized bed dryer |
| CN107311424B (en) * | 2017-06-29 | 2020-01-14 | 俞国豪 | Wet sludge drying method and fluidized bed dryer |
| CN115232649A (en) * | 2022-09-19 | 2022-10-25 | 浙江百能科技有限公司 | Furnace body system based on double fluidized bed pyrolysis process and manufacturing method thereof |
| CN115232649B (en) * | 2022-09-19 | 2022-12-13 | 浙江百能科技有限公司 | Furnace body system based on double fluidized bed pyrolysis process and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180323 Effective date of abandoning: 20200114 |