CN203007102U - Fluidized-bed dryer for drying sludge by using narrow-sieved high-temperature-particle heat carriers - Google Patents
Fluidized-bed dryer for drying sludge by using narrow-sieved high-temperature-particle heat carriers Download PDFInfo
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- CN203007102U CN203007102U CN 201320002513 CN201320002513U CN203007102U CN 203007102 U CN203007102 U CN 203007102U CN 201320002513 CN201320002513 CN 201320002513 CN 201320002513 U CN201320002513 U CN 201320002513U CN 203007102 U CN203007102 U CN 203007102U
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- bed dryer
- fluidized
- narrow
- fluidized bed
- dryer body
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- 239000002245 particle Substances 0.000 title claims abstract description 38
- 238000001035 drying Methods 0.000 title claims abstract description 21
- 239000010802 sludge Substances 0.000 title abstract description 10
- 239000000969 carrier Substances 0.000 title abstract 3
- 230000004888 barrier function Effects 0.000 claims description 29
- 239000000839 emulsion Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004062 sedimentation Methods 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005243 fluidization Methods 0.000 description 8
- 239000008187 granular material Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a fluidized-bed dryer for drying sludge by using narrow-sieved high-temperature-particle heat carriers. The fluidized-bed dryer comprises a fluidized-bed dryer body (2), wherein the upper part of the fluidized-bed dryer body (2) serves as a sedimentation section, and the lower part of the fluidized-bed dryer body (2) serves as a fluidized bed dense-phase region; a cyclone separator (14) is arranged in the upper-part sedimentation section of the fluidized-bed dryer body (2); the two ends of the lower part of the fluidized-bed dryer body (2) are respectively provided with an inlet end (4) and an outlet end, and an overflow port (9) is formed in the surface of the outlet end; and a discharging port (11) and a gas distribution device (6) which is used for feeding fluidizing gas are arranged at the bottom of the fluidized-bed dryer body (2). According to the fluidized-bed dryer, the high-temperature-particle heat carriers are adopted as heat sources and directly heat, so that the mass and heat transfer effect is better, the equipment is more reliable, and the management is easy.
Description
Technical field
The utility model relates to a kind of sludge dryer, especially relates to a kind of fluidized bed dryer with narrow-size distribution high-temperature particle thermal barrier sludge-drying.
Background technology
Life and Industrial Wastewater Treatment engineering can produce mud to be had pending.Generally moisture percentage in sewage sludge still more than 80%, then can be reduced to 50～60% through press filtration moisture after thick dehydration, as burning with incinerator, need be dried to moisture below 5%.Select thermal source most important in the drying sludge technology.At present thermal source commonly used has two kinds of hot flue gas and thermal oils.Take hot flue gas as thermal source, not only mass transfer, heat-transfer effect are poor, and thermo-efficiency is low, and the dry a large amount of foul gass that produce mix with flue gas, and are extremely difficult; Take thermal oil as the thermal source indirect heating, mass transfer, heat-transfer effect are good, and thermo-efficiency is high, the dry a large amount of foul gass that produce mix with a small amount of fluidizing agent, be easy to process, but heat-conducting oil heating and heat dissipation equipment are complicated, easy to wear, operational management requires high, and running cost is high.
The utility model content
The utility model is in order to solve in the current drying technology, the bad problem of thermal source of using, a kind of fluidized bed dryer with narrow-size distribution high-temperature particle thermal barrier sludge-drying is provided for this reason, comprise fluidized bed dryer body 2, the top of described fluidized bed dryer body 2 is settling section, and the bottom is the fluidized-bed emulsion zone; Be provided with cyclonic separator 14 in the top settling section of described fluidized bed dryer body 2; The two ends of the bottom of fluidized bed dryer body 2 are respectively equipped with entrance end 4 and exit end, and the exit end surface is provided with overflow port 9; The bottom of fluidized bed dryer body 2 is provided with discharge gate 11 and feeds the air-distributing device 6 of fluidizing agent.
The utility model fluidized bed dryer of narrow-size distribution high-temperature particle thermal barrier sludge-drying, the lower end of described cyclonic separator 14 is connected with material blanking tube 17 and flutter valve 18.
The utility model is with the fluidized bed dryer of narrow-size distribution high-temperature particle thermal barrier sludge-drying, and the vertical section of described fluidized-bed emulsion zone is wide at the top and narrow at the bottom trapezoidal, is highly 0.8～1.5m, and cross section is rectangle, and the long-width ratio of upper surface is 5～10.
The utility model fluidized bed dryer of narrow-size distribution high-temperature particle thermal barrier sludge-drying, described discharge gate 11 also is connected with crusher 12.
The utility model is achieved in that the drying of water-containing sludge is to complete in a fluidized bed dryer, its thermal source is narrow-size distribution high-temperature particle thermal barrier, and the thermal barrier granularity is 100～1000 m, and temperature is 600～1000 ℃.Moisture mud more than 80% is sent into by pipeline, and moisture mud below 60% is sent into by screw feeder, is heated to the thermal barrier particle of 600～1000 ℃ and mud the same end of moisture eliminator---entrance end 4 is sent in process furnace.
The fluidized-bed emulsion zone that the moisture eliminator bottom is comprised of thermal barrier particle and mud granule, particle is by the fluidizing agent fluidisation that feeds from bottom air-distributing device 6, can produce a large amount of water vapour when contacting with the high-temperature heat carrier particle due to high humidity mud, they make fluidisation stronger, and strong fluidisation has been strengthened mixing and the mass-and heat-transfer effect between mud and thermal barrier, and most of mud can complete drying within 3～5 minutes.Fluidized-bed emulsion zone vertical section is wide at the top and narrow at the bottom trapezoidal, will form the narrow-size distribution particle after drying sludge, and the different-grain diameter particle all can active fluidization in trapezoidal bed; Be highly 0.8～1.5m, cross section is rectangle, and the long-width ratio of upper surface is 5～10, and large long-width ratio has reduced back-mixing, has improved dry mass; Bottom mark attitude fluidizing gas velocity is 0.1～0.4m/s, and static bed thickness is 0.5～1.2m, and the material mean residence time is 5～15 minutes.
Moisture eliminator top is settling section, built-in cyclonic separator 14 is set, from bottom fluidized-bed emulsion zone effluent air---comprise the water vapour that fluidizing agent and evaporation produce, enter separator and complete and separate with small particle size thermal barrier particle together with the dewatered sludge dust of carrying secretly, separated particle returns to emulsion zone by material blanking tube 17 and flutter valve 18, and the gas after separation condenses through sack cleaner dedusting and spray and enters the compression fan pressurized circulation after removing moisture and smell substance and use.
In dried mud granule, diameter accounts for the overwhelming majority less than 8mm person, the mixture of the thermal barrier particle of completing dry minor diameter mud granule and having lowered the temperature flows out from the overflow port 9 that is positioned at dryer export end bed face, the major diameter mud granule is from being positioned at discharge gate 11 discharges of bed bottom, be sent to incinerator together with thin material after crusher 12 fragmentations, mud is burned, and thermal barrier is reheated and recycles.
The beneficial effects of the utility model are:
It is thermal source that the utility model adopts the high-temperature particle thermal barrier, direct heating, and mass transfer, heat-transfer effect are better, and equipment is more reliable, is easy to management.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Disclosed all features in this specification sheets, or the step in disclosed all methods or process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification sheets (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or similar characteristics.
The fluidized bed dryer with narrow-size distribution high-temperature particle thermal barrier sludge-drying as shown in Figure 1, comprise fluidized bed dryer body 2, the top of described fluidized bed dryer body 2 is settling section, the bottom is the fluidized-bed emulsion zone, the vertical section of described fluidized-bed emulsion zone is wide at the top and narrow at the bottom trapezoidal, be highly 0.8～1.5m, cross section is rectangle, and the long-width ratio of upper surface is 5～10.Be provided with cyclonic separator 14 in the top settling section of described fluidized bed dryer body 2, the lower end of described cyclonic separator 14 is connected with material blanking tube 17 and flutter valve 18.The two ends of the bottom of fluidized bed dryer body 2 are respectively equipped with entrance end 4 and exit end, and the exit end surface is provided with overflow port 9; The bottom of fluidized bed dryer body 2 is provided with discharge gate 11 and feeds the air-distributing device 6 of fluidizing agent, and described discharge gate 11 is connected with crusher 12.
The utility model is achieved in that the drying of water-containing sludge is to complete in a fluidized bed dryer, its thermal source is narrow-size distribution high-temperature particle thermal barrier, and the thermal barrier granularity is 100～1000 m, and temperature is 600～1000 ℃.Moisture mud more than 80% is sent into by pipeline, and moisture mud below 60% is sent into by screw feeder, is heated to the thermal barrier particle of 600～1000 ℃ and mud the same end of moisture eliminator---entrance end 4 is sent in process furnace.
The fluidized-bed emulsion zone that the moisture eliminator bottom is comprised of thermal barrier particle and mud granule, particle is by the fluidizing agent fluidisation that feeds from bottom air-distributing device 6, can produce a large amount of water vapour when contacting with the high-temperature heat carrier particle due to high humidity mud, they make fluidisation stronger, and strong fluidisation has been strengthened mixing and the mass-and heat-transfer effect between mud and thermal barrier, and most of mud can complete drying within 3～5 minutes.Fluidized-bed emulsion zone vertical section is wide at the top and narrow at the bottom trapezoidal, will form the narrow-size distribution particle after drying sludge, and the different-grain diameter particle all can active fluidization in trapezoidal bed; Be highly 0.8～1.5m, cross section is rectangle, and the long-width ratio of upper surface is 5～10, and large long-width ratio has reduced back-mixing, has improved dry mass; Bottom mark attitude fluidizing gas velocity is 0.1～0.4m/s, and static bed thickness is 0.5～1.2m, and the material mean residence time is 5～15 minutes.
Moisture eliminator top is settling section, built-in cyclonic separator 14 is set, from bottom fluidized-bed emulsion zone effluent air---comprise the water vapour that fluidizing agent and evaporation produce, enter separator and complete and separate with small particle size thermal barrier particle together with the dewatered sludge dust of carrying secretly, separated particle returns to emulsion zone by material blanking tube 17 and flutter valve 18, and the gas after separation condenses through sack cleaner dedusting and spray and enters the compression fan pressurized circulation after removing moisture and smell substance and use.
In dried mud granule, diameter accounts for the overwhelming majority less than 8mm person, the mixture of the thermal barrier particle of completing dry minor diameter mud granule and having lowered the temperature flows out from the overflow port 9 that is positioned at dryer export end bed face, the major diameter mud granule is from being positioned at discharge gate 11 discharges of bed bottom, be sent to incinerator together with thin material after crusher 12 fragmentations, mud is burned, and thermal barrier is reheated and recycles.
It is thermal source that the utility model adopts the high-temperature particle thermal barrier, direct heating, and mass transfer, heat-transfer effect are better, and equipment is more reliable, is easy to management.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (4)
1. the fluidized bed dryer with narrow-size distribution high-temperature particle thermal barrier sludge-drying, comprise fluidized bed dryer body (2), it is characterized in that: the top of described fluidized bed dryer body (2) is settling section, and the bottom is the fluidized-bed emulsion zone; Be provided with cyclonic separator (14) in the top settling section of described fluidized bed dryer body (2); The two ends of the bottom of fluidized bed dryer body (2) are respectively equipped with entrance end (4) and exit end, and the exit end surface is provided with overflow port (9); The bottom of fluidized bed dryer body (2) is provided with discharge gate (11) and feeds the air-distributing device (6) of fluidizing agent.
2. the fluidized bed dryer with narrow-size distribution high-temperature particle thermal barrier sludge-drying according to claim 1, it is characterized in that: the lower end of described cyclonic separator (14) is connected with material blanking tube (17) and flutter valve (18).
3. the fluidized bed dryer with narrow-size distribution high-temperature particle thermal barrier sludge-drying according to claim 1, it is characterized in that: the vertical section of described fluidized-bed emulsion zone is wide at the top and narrow at the bottom trapezoidal, be highly 0.8～1.5m, cross section is rectangle, and the long-width ratio of upper surface is 5～10.
4. the fluidized bed dryer with narrow-size distribution high-temperature particle thermal barrier sludge-drying according to claim 1, it is characterized in that: described discharge gate (11) also is connected with crusher (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320002513 CN203007102U (en) | 2013-01-04 | 2013-01-04 | Fluidized-bed dryer for drying sludge by using narrow-sieved high-temperature-particle heat carriers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320002513 CN203007102U (en) | 2013-01-04 | 2013-01-04 | Fluidized-bed dryer for drying sludge by using narrow-sieved high-temperature-particle heat carriers |
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| CN203007102U true CN203007102U (en) | 2013-06-19 |
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| CN 201320002513 Expired - Fee Related CN203007102U (en) | 2013-01-04 | 2013-01-04 | Fluidized-bed dryer for drying sludge by using narrow-sieved high-temperature-particle heat carriers |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058488A (en) * | 2013-01-04 | 2013-04-24 | 无锡亿恩科技股份有限公司 | Fluidized bed dryer for drying sludge by narrow screened high-temperature particle heat carrier |
| CN104949135A (en) * | 2015-06-30 | 2015-09-30 | 霍奇志 | Multi-temperature particle heat source drying device and method |
| CN107311424A (en) * | 2017-06-29 | 2017-11-03 | 俞国豪 | Wet sludge anhydration method and fluid bed drying device |
-
2013
- 2013-01-04 CN CN 201320002513 patent/CN203007102U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058488A (en) * | 2013-01-04 | 2013-04-24 | 无锡亿恩科技股份有限公司 | Fluidized bed dryer for drying sludge by narrow screened high-temperature particle heat carrier |
| CN104949135A (en) * | 2015-06-30 | 2015-09-30 | 霍奇志 | Multi-temperature particle heat source drying device and method |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: UNIVERSITY OF SHANGHAI FOR SCIENCE AND TECHNOLOGY Effective date: 20130620 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130620 Address after: 214400 No. 3 Chaoyang Road, Gushan Town, Wuxi City, Jiangsu, Jiangyin Patentee after: Wuxi Yien Technology Co., Ltd. Address before: 214400 No. 3 Chaoyang Road, Gushan Town, Wuxi City, Jiangsu, Jiangyin Patentee before: Wuxi Yien Technology Co., Ltd. Patentee before: University of Shanghai for Science and Technology |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20200104 |