CN101913750B - Sludge granulation and drying device and method - Google Patents
Sludge granulation and drying device and method Download PDFInfo
- Publication number
- CN101913750B CN101913750B CN 201010252412 CN201010252412A CN101913750B CN 101913750 B CN101913750 B CN 101913750B CN 201010252412 CN201010252412 CN 201010252412 CN 201010252412 A CN201010252412 A CN 201010252412A CN 101913750 B CN101913750 B CN 101913750B
- Authority
- CN
- China
- Prior art keywords
- bed
- fluidized
- spouted
- mud
- granule
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention relates to sludge granulation and drying device and method, which can safely and effectively treat wet sludge of a sewage treatment plant so as to facilitate the subsequent resource development and utilization of sludge. The device comprises a screw extrusion granule forming machine, a spout fluidized bed and a dried sludge granule stock bin, and the screw extrusion granule forming machine comprises a drive shaft, a screw feeder, a sludge extrusion forming pore plate and a rotating cutter. The method comprises the following steps of: dividing the spout fluidized bed into an upper spout bed area and a lower fluidized bed area, which are communicated, by using a middle partition board; loading the wet sludge granules from the screw extrusion granule forming machine downward into the spout bed from the bed surface of the spout bed; leading the primarily dried sludge granules to flow to the bottom of the fluidized bed from the bottom opening of the spout bed, and leading the other part of hot gas medium to enter the fluidized bed from a fluidized air inlet to deeply dry the sludge granules; enabling the dried sludge granules to move upward from the bottom of the fluidized bed to the bed surface of the fluidized bed; and finally, overflowing the dried sludge granules out from the fluidized bed to enter the dried sludge granule stock bin.
Description
Technical field
A kind of device and method of the present invention for wet mud is processed, especially a kind of sludge granulation dryer and method.
Background technology
Along with the raising of urbanization process quickening and living standards of the people, the city domestic sewage amount sharply increases.The auxiliary product of mud after as sewage work's sewage disposal is because being rich in the objectionable impuritiess such as organic detritus, bacterium thalline and heavy metal, very big to environmental influence.Sludge treatment has become the significant problem of puzzlement sewage work and the whole society, how to process safely and effectively municipal sludge, has become the focus of current research.
The primary sludge water ratio of sewage work is up to 95%, the mechanical dehydration method can only be down to 80% with its water ratio at present, subsequent disposal is disposed very difficult, and in the methods of disposal such as sludge incineration, compost, landfill, all requires the water ratio of mud is reduced to below 65%; On the other hand, the solid composition is to exist in the wet mud with molecule in the mud, and that the mud after the mummification presents is Powdered, waves easily in atmosphere contaminate environment.Therefore, the mud granulizing drying becomes the gordian technique of economy, efficient lignin-sludge.
In the fluidized bed dryer of routine, easily bonding is agglomerating in fluidized-bed for the wet mud behind the mechanical dehydration, causes fluidized bed dryer to work, and along with the rising of mud temperature, wet mud bonding agglomeration is even more serious; On the other hand, conventional fluidized bed dryer is unfavorable for the mud granulizing drying because the particle layers structure is inhomogeneous, bubble poly-and cause an interior channel, the undesired fluidisation phenomenon such as turbulent.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of device and method of mud granulizing drying, adopt the method to process the wet mud of Sewage Plant safely and effectively, be convenient to the follow-up resource utilization development and use of mud.
Technical scheme: sludge granulation dryer of the present invention comprises screw extrusion granule-forming machine, spouted fluidized bed and dewatered sludge particle feed bin; Wherein, the screw extrusion granule-forming machine comprises transmission shaft, screw feeder, mud extrusion molding orifice plate and rotating blade, mud extrusion molding orifice plate is fixed in the housing of screw feeder downstream, and transmission shaft passes mud extrusion molding orifice plate and rotating blade links; The outlet of screw extrusion granule-forming machine connects spouted fluidized bed, spouted fluidized bed is drawn spouted bed and two zones of fluidized-bed that are divided into up and down maintenance connection with central dividing plate, the bottom of spouted bed is spouted wind inlet mouth, the bottom of fluidized-bed is the fluidized wind inlet mouth, the middle part of fluidized-bed is overflow port, and overflow port and dewatered sludge particle feed bin link; The top of this spouted fluidized bed is for containing the humid gas venting port.The perforate of described mud extrusion molding orifice plate is circular, oval, square or Polygons, or difform combination.
The granulating and drying method of sludge granulation dryer of the present invention is: the mud that will wet is delivered to mud extrusion molding orifice plate by screw feeder, be squeezed into strip through mud extrusion molding orifice plate, then cut into particulate state through rotating blade, enter spouted bed, the hot gas medium enters spouted bed from spouted wind inlet mouth, form a stable jeting area in spouted bed bottom, the hot gas medium is upward through spouted zone and forms counter current contact with the mud granule that moves downward, mud granule forms regular cyclic motion in spouted bed, wet mud granule is strengthened moulding and preliminarily dried, mud shaped granule behind the preliminarily dried flows into the fluidized-bed bottom from spouted bed lower openings, another part hot gas medium enters fluidized-bed from the fluidized wind inlet mouth, mud granule is under the effect of hot gas medium, present fluidized state, mud granule is carried out the deep dehydration drying, finishing the moisture that the hot gas medium after the heat exchange carries in the mud discharges from the humid gas venting port that contains at spouted fluidized bed top, the dewatered sludge particle that evaporates behind the moisture is discharged fluidized-bed through the overflow port of spouted fluidized bed, enter dewatered sludge particle feed bin, in whole mud granulizing drying process, the temperature of spouted bed and fluidized-bed is in 105 ℃～350 ℃.Described hot gas medium is air, flue gas, water vapour or other gas.
In the described mud granulizing drying means, in spouted fluidized bed, adopt central dividing plate, spouted fluidized bed is drawn spouted bed and two zones of fluidized-bed that are divided into up and down maintenance connection, prevention directly flows into dewatered sludge particle feed bin from the spouted fluidized bed bed face from screw extrusion granule-forming machine wet mud granule out, namely utilize central dividing plate, to enter spouted bed downwards from spouted bed bed face from screw extrusion granule-forming machine wet mud granule out, mud granule behind the preliminarily dried flows into the fluidized-bed bottom from spouted bed lower openings, then move upward to fluidized-bed bed surface, overflow at last fluidized-bed, enter dewatered sludge particle storehouse, the method significant prolongation the residence time of mud granule in spouted bed and fluidized-bed, especially mud granule contacts with the hot gas medium counter flow in spouted bed, impels the abundant granulating and drying of mud.
Beneficial effect: in the fluidized bed dryer of routine, the wet mud behind the mechanical dehydration easily bonding is agglomerating, causes fluidized bed dryer to work, and along with the rising of mud temperature, wet mud bonding agglomeration is even more serious; On the other hand, conventional fluidized bed dryer is unfavorable for the mud granulizing drying because the particle layers structure is inhomogeneous, bubble poly-and cause an interior channel, the undesired fluidisation phenomenon such as turbulent.
The present invention is a kind of method of mud granulizing drying, be specially the mud that to wet and be delivered to mud extrusion molding orifice plate by screw feeder, be squeezed into strip through mud extrusion molding orifice plate, then cut into particulate state through rotating blade, enter spouted bed downwards from spouted bed bed face, the hot gas medium enters spouted bed from spouted wind inlet mouth, form a stable jeting area in spouted bed bottom, jet flow stream is upward through spouted zone and forms counter current contact with the mud granule that moves downward, mud granule forms regular cyclic motion in spouted bed, be conducive to process the strong mud material of stickiness, be convenient to mud granule and further strengthen moulding, simultaneously, enter wet mud granule and hot gas medium in the spouted bed, the bed material is violent to be mixed, strong heat and mass exchange occur, so that the wet mud granule instantaneously heating that has just entered bed is to the interior temperature of bed, to wet, moisture is evaporated in the mud granule, mud shaped granule behind the preliminarily dried flows into the fluidized-bed bottom from spouted bed lower openings, another part hot gas medium enters fluidized-bed from the fluidized wind inlet mouth, mud granule is under the effect of hot gas medium, present fluidized state, mud granule is carried out the deep dehydration drying, dried mud granule moves upward to fluidized-bed bed surface from the fluidized-bed bottom, then discharge fluidized-bed through the overflow port of spouted fluidized bed, enter dewatered sludge particle feed bin, finish the moisture that the hot gas medium after the heat exchange carries in the mud and discharge from the humid gas venting port that contains at spouted fluidized bed top.This technology not only makes mud obtain minimizing and processes, and is convenient to the follow-up resource utilization development and use of mud.
Description of drawings
Fig. 1 is apparatus structure synoptic diagram of the present invention, wherein has: screw extrusion granule-forming machine 1, transmission shaft 11, screw feeder 12, mud extrusion molding orifice plate 13, rotating blade 14, spouted fluidized bed 2, the central dividing plate 21 of spouted fluidized bed, the spouted bed 22 of spouted fluidized bed, the fluidized-bed 23 of spouted fluidized bed, the overflow port 24 of spouted fluidized bed, dewatered sludge particle feed bin 3, spouted wind inlet mouth A, fluidized wind inlet mouth B contains humid gas venting port C.
Embodiment
Sludge granulation dryer of the present invention, by screw extrusion granule-forming machine 1, spouted fluidized bed 2 and dewatered sludge particle feed bin 3 form, wherein screw extrusion granule-forming machine 1 is by transmission shaft 11, screw feeder 12, mud extrusion molding orifice plate 13 and rotating blade 14 form, mud extrusion molding orifice plate 13 is fixed in the screw feeder 12 downstream housings, transmission shaft 11 passes through mud extrusion molding orifice plate 13 and rotating blade 14 links, with central dividing plate 21 with 2 strokes of spouted fluidized beds be divided into up and down keep being communicated with about two zones, correspond to respectively spouted bed 22 and fluidized-bed 23, the bottom of spouted bed is spouted wind inlet mouth A, the bottom of fluidized-bed is fluidized wind inlet mouth B, the middle part of spouted fluidized bed 2 is overflow port 24, and the top of spouted fluidized bed 2 is for containing humid gas venting port C.
The mud that will wet is delivered to mud extrusion molding orifice plate 13 by screw feeder 12, be squeezed into strip through mud extrusion molding orifice plate 13, then cut into particulate state through rotating blade 14, enter spouted bed 22 downwards from spouted bed 22 bed faces, the hot gas medium enters spouted bed 22 from spouted wind inlet mouth A, form a stable jeting area in spouted bed 22 bottoms, jet flow stream is upward through spouted zone and forms counter current contact with the mud granule that moves downward, mud granule is at the regular cyclic motion of spouted bed 22 interior formation, the Rapid Circulation stirring of particle is conducive to the mud material and further strengthens moulding, simultaneously, enter spouted bed 22 interior wet mud granule and hot gas media, bed material particle acutely mixes, strong heat and mass exchange occur, so that just entered the 22 interior wet mud granule instantaneously heatings of spouted bed to the interior temperature of bed, to wet, moisture is evaporated in the mud granule, mud shaped granule behind the preliminarily dried flows into fluidized-bed 23 bottoms from spouted bed 22 lower openings, another part hot gas medium enters fluidized-bed 23 from fluidized wind inlet mouth B, mud granule is under the effect of hot gas medium, present fluidized state, mud granule is carried out the deep dehydration drying, dried mud granule moves upward to fluidized-bed 23 bed faces from fluidized-bed 23 bottoms, then discharge fluidized-bed 23 through the overflow port 24 of spouted fluidized bed 2, enter dewatered sludge particle feed bin 3, finish the moisture that hot gas medium after the heat exchange carries in the mud and discharge from the humid gas venting port C that contains at spouted fluidized bed 2 tops.
The central dividing plate 21 of spouted fluidized bed is divided into 2 strokes of spouted fluidized beds in spouted bed 22 and 23 two zones of fluidized-bed that keep up and down connection, prevention directly flows into dewatered sludge particle feed bin 3 from spouted fluidized bed 2 bed faces from screw extrusion granule-forming machine 1 wet mud granule out, namely utilize central dividing plate 21, to enter spouted bed 22 downwards from spouted bed 22 bed faces from screw extrusion granule-forming machine 1 wet mud granule out, the hot gas medium enters spouted bed 22 from spouted wind inlet mouth A, form counter current contact with the mud granule that moves downward, mud granule is at the regular cyclic motion of spouted bed 22 interior formation, mud shaped granule behind the preliminarily dried flows into fluidized-bed 23 bottoms from spouted bed 22 lower openings, then move upward to fluidized-bed 23 bed faces from fluidized-bed 23 bottoms, overflow port 24 through spouted fluidized bed overflows fluidized-bed 23.The method significant prolongation the residence time of mud in spouted bed 22 and fluidized-bed 23, especially contact with the hot gas medium counter flow at spouted 22 interior mud granules, impel the abundant granulating and drying of mud.
In whole mud granulizing drying process, the temperature of spouted bed 22 and fluidized-bed 23 is in 105 ℃～350 ℃ temperature.
Claims (2)
1. a sludge granulation dryer is characterized in that this device comprises screw extrusion granule-forming machine (1), spouted fluidized bed (2) and dewatered sludge particle feed bin (3); Wherein, screw extrusion granule-forming machine (1) comprises transmission shaft (11), screw feeder (12), mud extrusion molding orifice plate (13) and rotating blade (14), mud extrusion molding orifice plate (13) is fixed in the housing of screw feeder (12) downstream, and transmission shaft (11) passes mud extrusion molding orifice plate (13) and links with rotating blade (14); The outlet of screw extrusion granule-forming machine (1) connects spouted fluidized bed (2), spouted fluidized bed (2) is drawn spouted (22) and (23) two zones of fluidized-bed that are divided into up and down maintenance connection with central dividing plate (21), the bottom of spouted bed (22) is spouted wind inlet mouth (A), the bottom of fluidized-bed (23) is fluidized wind inlet mouth (B), the middle part of fluidized-bed (23) is overflow port (24), and overflow port (24) links with dewatered sludge particle feed bin (3); The top of this spouted fluidized bed (2) is for containing humid gas venting port (C); The perforate of described mud extrusion molding orifice plate (13) is circle, ellipse or Polygons, or difform combination.
2. the granulating and drying method of a sludge granulation dryer as claimed in claim 1, it is characterized in that: the mud that will wet is delivered to mud extrusion molding orifice plate (13) by screw feeder (12), be squeezed into strip through mud extrusion molding orifice plate (13), then pass through rotating blade (14) and cut into particulate state, enter spouted bed (22), the hot gas medium enters spouted bed (22) from spouted wind inlet mouth (A), form a stable jeting area in spouted bed (22) bottom, the hot gas medium is upward through spouted zone and forms counter current contact with the mud granule that moves downward, mud granule forms regular cyclic motion in spouted bed (22), wet mud granule is strengthened moulding and preliminarily dried, mud shaped granule behind the preliminarily dried flows into fluidized-bed (23) bottom from spouted bed (22) lower openings, another part hot gas medium enters fluidized-bed (23) from fluidized wind inlet mouth (B), mud granule is under the effect of hot gas medium, present fluidized state, mud granule is carried out the deep dehydration drying, finishing the moisture that the hot gas medium after the heat exchange carries in the mud discharges from the humid gas venting port (C) that contains at spouted fluidized bed (2) top, the dewatered sludge particle that evaporates behind the moisture is discharged fluidized-bed (23) through the overflow port (24) of spouted fluidized bed, enter dewatered sludge particle feed bin (3), in whole mud granulizing drying process, the temperature of spouted bed (22) and fluidized-bed (23) is in 105 ℃～350 ℃; Described hot gas medium is air, flue gas, water vapour or other gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010252412 CN101913750B (en) | 2010-08-11 | 2010-08-11 | Sludge granulation and drying device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010252412 CN101913750B (en) | 2010-08-11 | 2010-08-11 | Sludge granulation and drying device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101913750A CN101913750A (en) | 2010-12-15 |
| CN101913750B true CN101913750B (en) | 2013-01-30 |
Family
ID=43321433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010252412 Expired - Fee Related CN101913750B (en) | 2010-08-11 | 2010-08-11 | Sludge granulation and drying device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101913750B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152514A (en) * | 2015-09-23 | 2015-12-16 | 华南理工大学 | Municipal sludge three-section process drying method |
| CN107500504A (en) * | 2017-10-20 | 2017-12-22 | 河南红东方化工股份有限公司 | A kind of high-efficiency and continuous dries sludge technology |
| CN107954585A (en) * | 2017-11-27 | 2018-04-24 | 江苏理工学院 | A kind of domestic sludge assists coal desiccation molding machine |
| CN110395874B (en) * | 2019-07-24 | 2022-01-25 | 华北水利水电大学 | Multi-stage high-speed spiral line type extrusion drying device for urban sludge |
| CN110395830B (en) * | 2019-07-25 | 2022-03-01 | 华北水利水电大学 | Efficient treatment process and system for community domestic sewage |
| CN111365729A (en) * | 2020-03-16 | 2020-07-03 | 杭州航民江东热电有限公司 | Fuel conveying system with drying device |
| CN115925215B (en) * | 2022-11-18 | 2023-09-12 | 盐城市泉通环保设备有限公司 | Sludge treatment device and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0857930A1 (en) * | 1997-02-11 | 1998-08-12 | Allgaier-Werke GmbH & Co. KG | Apparatus and process for drying wet solid particles in fluidized beds |
| NL1025770C1 (en) * | 2004-03-19 | 2005-09-20 | Joannes Hupkens | Processing sludge to form granular material for e.g. road construction, comprises mixing sludge with mortar in granulator |
| CN200963582Y (en) * | 2006-11-02 | 2007-10-24 | 赵增发 | Granulating machine |
| CN101186422A (en) * | 2007-12-14 | 2008-05-28 | 东南大学 | Enclosed multi-chamber fluidized bed drying method for sludge |
| CN201729747U (en) * | 2010-08-11 | 2011-02-02 | 东南大学 | Sludge granulation dryer |
-
2010
- 2010-08-11 CN CN 201010252412 patent/CN101913750B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0857930A1 (en) * | 1997-02-11 | 1998-08-12 | Allgaier-Werke GmbH & Co. KG | Apparatus and process for drying wet solid particles in fluidized beds |
| NL1025770C1 (en) * | 2004-03-19 | 2005-09-20 | Joannes Hupkens | Processing sludge to form granular material for e.g. road construction, comprises mixing sludge with mortar in granulator |
| CN200963582Y (en) * | 2006-11-02 | 2007-10-24 | 赵增发 | Granulating machine |
| CN101186422A (en) * | 2007-12-14 | 2008-05-28 | 东南大学 | Enclosed multi-chamber fluidized bed drying method for sludge |
| CN201729747U (en) * | 2010-08-11 | 2011-02-02 | 东南大学 | Sludge granulation dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101913750A (en) | 2010-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101913750B (en) | Sludge granulation and drying device and method | |
| US8808419B2 (en) | Method of integration of concentration-dehydration and aerobic air-drying of sewage sludge | |
| CN104556157B (en) | The apparatus and method of magnesium sulfate are produced in flue gas desulfurization | |
| US20120246965A1 (en) | Method and Apparatus for Aerobically Air-drying Sludge Filter Cakes | |
| US9944531B2 (en) | Sludge recycling treatment system of urban sewage plant | |
| CN104445725B (en) | Waste gas and high-concentration ammonia nitrogenous wastewater process integrated apparatus | |
| CN108295815B (en) | Method and device for preparing porous foam adsorption material | |
| CN111362342A (en) | Wastewater zero discharge system and method for multi-stage treatment | |
| CN201729747U (en) | Sludge granulation dryer | |
| CN201842753U (en) | Drying deice for utilization of urban sludge as resources | |
| CN103524008B (en) | Automatic processing handling process for zero discharge of sludge for urban sewage plant | |
| CN103130393B (en) | Sludge drying processing method and system | |
| CN110550843B (en) | Domestic sewage treatment system | |
| CN110550844B (en) | Domestic sewage's processing system | |
| CN203653402U (en) | Loop coil type sludge dryer | |
| CN210885768U (en) | Sludge low-temperature high-efficiency drying device | |
| CN210374747U (en) | Integrated waste heat recovery device for condensing, cooling and separating waste steam and waste water | |
| CN207828090U (en) | A kind of two-stage type mud drying device and system | |
| CN105152514A (en) | Municipal sludge three-section process drying method | |
| CN202988946U (en) | Vertical multi-disk sludge drying system | |
| CN110183083B (en) | Leather sludge drying and reducing method and device | |
| CN208732665U (en) | High-salt wastewater inspissator | |
| CN202193626U (en) | Device for producing ammonium sulfate fertilizer by ammonia flue desulfurization | |
| CN216062045U (en) | Spray fluidized bed drying device | |
| CN105540813A (en) | Nano calcium carbonate filter pressing wastewater treatment method and equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20150811 |
|
| EXPY | Termination of patent right or utility model |