CN2878374Y - Device for drying sludge by flue gas residual heat - Google Patents
Device for drying sludge by flue gas residual heat Download PDFInfo
- Publication number
- CN2878374Y CN2878374Y CN 200520139689 CN200520139689U CN2878374Y CN 2878374 Y CN2878374 Y CN 2878374Y CN 200520139689 CN200520139689 CN 200520139689 CN 200520139689 U CN200520139689 U CN 200520139689U CN 2878374 Y CN2878374 Y CN 2878374Y
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- China
- Prior art keywords
- gas
- outlet
- drying
- fan
- drier
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- Expired - Fee Related
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Abstract
The utility model discloses a device which dries sewage sludge by making use of remaining heat from flue, which comprises a fan, a drier, and a constant weight feeder, a gas-solid separator, as well as a regulating valve. Taking flue gas with a certain temperature as drying medium, the utility model is connected with the inlet of the fan, while the outlet of the fan is connected with the air inlet of drier. At the middle of the drier, an intake for adding wet sewage sludge is arranged to connect with the constant weight outlet of feeder. The outlet of the drier is connected with the gas-solid inlet of the separator, while the gas-solid outlet of separator is connected with a chimney. Three regulating valves are positioned respectively at the boiler induced-draft outlet of the fan, at the chimney shaft and inlets of fan, as well as at the gas-solid outlet of separator. With the function of quick closure, a drying and mixing apparatus is arranged at the bottom of drier. In order to adapt to the speeds of flue gas required by sewage sludge with different water contents and different diameters of particles, a gas distributor in the shape of W and a drying cylinder in the shape of upset cone are provided. It is characterized in that low cost for drying, simple and high efficient devices, as well as safe and reliable operation, the utility model decreases thermal pollutions in environment.
Description
Technical field
The utility model relates to a kind of drying installation of mud, relates in particular to a kind of device that utilizes stack gas waste heat sludge-drying.
Background technology
The essence of sewage disposal is that the pollutent in the water is become insoluble solid (mud) or harmless gas, thereby reaches the purpose of purifying waste water.Sludge treatment is improper, still can cause secondary pollution to environment.Mud is behind mechanical dehydration, and water content still very high (about 80%), as carry out drying treatment and need a large amount of heat energy promptly consumes a large amount of fuel, adopts the ordinary method drying cost higher.At present, about 140 ℃～200 ℃ of the discharging flue-gas temperature of industry and station boiler contains a large amount of heat energy, and the direct discharging of these flue gases also can cause thermal pollution to atmospheric environment.
Summary of the invention
The utility model provides a kind of and utilizes the stack gas waste heat that mud is carried out drying and drying cost is low, the sludge drying mechanism of operational safety, and the utility model can reduce the pollution of stack gas to environment.
The utility model adopts following technical scheme:
A kind of device that utilizes stack gas waste heat sludge-drying that is used for drying sludge, by boiler induced-draft fan, blower fan, drying machine, gas-solid separator, chimney and regulated valve are formed, the outlet of boiler induced-draft fan links to each other with the import of blower fan and be provided with regulated valve between the import of the outlet of boiler induced-draft fan and blower fan, the outlet of blower fan links to each other with the blast inlet of drying machine, on drying machine, be provided with mud and add inlet, the air outlet of drying machine links to each other with the import of gas-solid separator, be provided with the dewatered sludge discharge port in the gas-solid separator bottom, the outlet of gas-solid separator is connected with the chimney import by regulated valve, and the boiler induced-draft fan outlet also is connected with the chimney import and is provided with regulated valve between boiler induced-draft fan outlet and chimney import.
Compared with prior art, the utlity model has following advantage:
The utility model has made full use of a large amount of waste heats in the stack gas, adopt low-temperature heat source that mud is carried out drying treatment, so not only thoroughly solve the pollution of industry or municipal effluent to environment, reduced of the thermal pollution of hot flue gas to atmospheric environment, the sulphur content and the dust content of fume emission have also been reduced, dewatered sludge after handling simultaneously still has certain calorific value and can be used as fuel use, the raw material that also can be used as building materials and chemical industry that has.And oxygen level is lower in the flue gas, is generally less than 10%, even be similar to and volatility is higher than the mud of brown coal for combustionproperty, utilizes flue gas to carry out drying, as long as adopt airtight drying means, the possibility of detonation does not take place almost.For drying sludge, the discharged flue gas temperature of industry and station boiler is lower, as utilizes flue gas drying, must adopt quickly drying method.And the utility model is the fast drying installation of good leak tightness, rate of drying, its bottom is provided with dry whipping appts, divide scatter mass structure mud rapidly, increase drying area, to improve its rate of drying, gas distributor is the W shape, prevent that the higher mud of moisture content from blocking blast inlet, on dry cylindrical shell vertical height, mud moisture content, particle diameter are by reducing greatly gradually, and dry cylindrical shell is inverted cone shape, and big top, velocity of flue gas bottom is little, dry normal continuously, dried dewatered sludge can reach certain particle diameter so that collect.Concrete advantage of the present utility model is as follows:
1, in the drying installation of good leak tightness, drying medium adopts stack gas, and drying is carried out under the condition of hypoxemia, has eliminated the possibility of mud detonation in drying process.2, adopt the waste heat sludge-drying of stack gas, drying cost is lower.3, reduced the temperature of stack gas, reduced the thermal pollution of boiler environment to airborne release.4, in the drying process, the fine dust in the flue gas fully contacts with wet mud, and the mud that wet captures, and adopts the utility model, and the dewatered sludge granularity is bigger, is easy to dedusting, has reduced the dust content of fume emission.5, in the drying process, wet mud and flue gas thorough mixing have adsorbed SO wherein
X, having reduced the sulphur content of fume emission, actual measurement shows dust content and takes off content and all descends about 40%.6, device is simple efficient, and floor space is little, and installation and maintenance are convenient.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model drying machine example structure synoptic diagram.
Embodiment
A kind of device that utilizes stack gas waste heat sludge-drying that is used for drying sludge, by boiler induced-draft fan 1, blower fan 10, drying machine 8, gas-solid separator 7, chimney and regulated valve 4 are formed, the outlet of boiler induced-draft fan 1 links to each other with the import of blower fan 10 and be provided with regulated valve 11 between the import of the outlet of boiler induced-draft fan 1 and blower fan 10, the outlet of blower fan 10 links to each other with the blast inlet 83 of drying machine 8, on drying machine 8, be provided with mud and add inlet 82, the air outlet 87 of drying machine 8 links to each other with the import of gas-solid separator 7, be provided with dewatered sludge discharge port 6 in gas-solid separator 7 bottoms, the outlet of gas-solid separator 7 is connected with chimney import 5 by regulated valve 4, boiler induced-draft fan outlet 1 also is connected with chimney import 5 and is provided with regulated valve 3 between boiler induced-draft fan outlet 1 and chimney import 5, in the present embodiment, be provided with dry whipping appts 86 in drying machine 8 bottoms, the rotating shaft of this drying whipping appts 86 links to each other with motor 84, drying machine 8 is made up of the drying simplified 81 and the gas distributor 85 of W type, the gas distributor 85 of W type is located at the below, bottom of dry cylindrical shell 81, being provided with blast inlet 83 and blast inlet 83 on the gas distributor 85 of W type tangentially is connected with the gas distributor 85 that is the W type, dry simplified 81 are inverted cone shape, the middle part is provided with wet mud and adds inlet 82, and top-side is provided with air outlet 87.
Claims (2)
1, a kind of device that utilizes stack gas waste heat sludge-drying that is used for drying sludge, it is characterized in that by boiler induced-draft fan (1), blower fan (10), drying machine (8), gas-solid separator (7), chimney and regulated valve (4) are formed, the outlet of boiler induced-draft fan (1) links to each other with the import of blower fan (10) and be provided with regulated valve (11) between the import of the outlet of boiler induced-draft fan (1) and blower fan (10), the outlet of blower fan (10) links to each other with the blast inlet (83) of drying machine (8), on drying machine (8), be provided with mud and add inlet (82), the air outlet (87) of drying machine (8) links to each other with the import of gas-solid separator (7), be provided with dewatered sludge discharge port (6) in gas-solid separator (7) bottom, the outlet of gas-solid separator (7) is connected with chimney import (5) by regulated valve (4), and boiler induced-draft fan outlet (1) also is connected with chimney import (5) and is provided with regulated valve (3) between boiler induced-draft fan outlet (1) and chimney import (5).
2, the device that utilizes stack gas waste heat sludge-drying according to claim 1, it is characterized in that being provided with dry whipping appts (86) in drying machine (8) bottom, the rotating shaft of this drying whipping appts (86) links to each other with motor (84), drying machine (8) is made up of the dry cylindrical shell (81) and the gas distributor (85) of W type, the gas distributor of W type (85) is located at the below, bottom of dry cylindrical shell (81), being provided with blast inlet (83) and blast inlet (83) on the gas distributor (85) of W type tangentially is connected with the gas distributor that is the W type (85), dry cylindrical shell (81) is inverted cone shape, the middle part is provided with wet mud and adds inlet (82), and top-side is provided with air outlet (87).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520139689 CN2878374Y (en) | 2005-12-14 | 2005-12-14 | Device for drying sludge by flue gas residual heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520139689 CN2878374Y (en) | 2005-12-14 | 2005-12-14 | Device for drying sludge by flue gas residual heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2878374Y true CN2878374Y (en) | 2007-03-14 |
Family
ID=37860790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520139689 Expired - Fee Related CN2878374Y (en) | 2005-12-14 | 2005-12-14 | Device for drying sludge by flue gas residual heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2878374Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885573B (en) * | 2009-05-11 | 2012-05-30 | 沈阳禹华环保有限公司 | Sludge treatment device using waste heat of boiler and treatment process thereof |
| CN103011536A (en) * | 2012-12-11 | 2013-04-03 | 张家港市华源染织有限公司 | Printing and dyeing sludge treatment method |
| CN105276603A (en) * | 2015-10-20 | 2016-01-27 | 上海理工大学 | Coal-sludge co-combustion system based on high-temperature smoke drying and pneumatic conveying |
-
2005
- 2005-12-14 CN CN 200520139689 patent/CN2878374Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885573B (en) * | 2009-05-11 | 2012-05-30 | 沈阳禹华环保有限公司 | Sludge treatment device using waste heat of boiler and treatment process thereof |
| CN103011536A (en) * | 2012-12-11 | 2013-04-03 | 张家港市华源染织有限公司 | Printing and dyeing sludge treatment method |
| CN105276603A (en) * | 2015-10-20 | 2016-01-27 | 上海理工大学 | Coal-sludge co-combustion system based on high-temperature smoke drying and pneumatic conveying |
| CN105276603B (en) * | 2015-10-20 | 2017-09-29 | 上海理工大学 | Coal sludge mixture burning control system based on high temperature flue gas drying and Geldart-D particle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070314 Termination date: 20101214 |