CN102674655A - Sludge harrow type drying method and device - Google Patents
Sludge harrow type drying method and device Download PDFInfo
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- CN102674655A CN102674655A CN2012101751583A CN201210175158A CN102674655A CN 102674655 A CN102674655 A CN 102674655A CN 2012101751583 A CN2012101751583 A CN 2012101751583A CN 201210175158 A CN201210175158 A CN 201210175158A CN 102674655 A CN102674655 A CN 102674655A
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Abstract
The invention relates to a method for drying sludge and a drying device. A heat medium ( generally hot gas fume or hot air) for drying the sludge enters a sludge harrow type dryer from the tangential direction; wet sludge is added from one end of the harrow type dryer and is directly contacted with the heat medium in the drier to realize the drying process; the harrow type device can crush the block-shaped sludge and push the sludge from an inlet to an outlet; dry sludge is moved to the other end of the harrow type drier under the functions of the drying medium and the harrow type device and is separated from the drying medium through a function of an internal gas-solid separator and discharged out of the drier. The method has the characteristics that the drier can be securely and continuously operated, so that the obvious effects of high heat efficiency, low energy consumption and high yield are achieved.
Description
Technical field
The present invention relates to a kind of sludge drying mechanism and drying means thereof, belong to the technical field that environmental protection equipment is made.
Background technology
Mud is the product after the WWT; Mud organic substance content is high, perishable; The intensive stink is arranged, and contain the hazardous and noxious substances of difficult degradations such as heavy metals such as parasitic ovum, pathogenic micro-organism and copper, zinc, chromium, mercury and salt, polychlorobiphenyl 、 dioxin, radionuclide, as not dealing carefully with; Discharging will cause secondary pollution arbitrarily.
At present, the method for disposal of mud mainly is landfill and compost.The landfill disposal options can take a large amount of land resourcess, causes secondary pollution easily.Compost is according to the method for sterilization and slaking; Its fertilizer efficiency and security are different, and this disposal options can reach the purpose of resource utilization, but treating processes is longer; And take a large amount of soils; Disposal costs is also higher, and for the mud that contains objectionable constituent such as heavy metal, then should not adopt this mode to dispose.
Drying can make greatly minimizing of mud, innoxious.Because the special property of mud, many common drying machines also are not suitable for drying sludge.Traditional rake type drier adopt the mode of operation of interrupted input and output material and cause that productivity is lower, the drying mode that adopts indirect heating and cause thermo-efficiency lower more.For this reason, the present invention has studied a kind of mud rake formula drying means and device of novelty, has solved the singularity in the drying sludge process well, especially makes drying sludge to move efficiently by continous-stable.
Summary of the invention
Technical problem:The technical problem that the present invention will solve provides a kind of method and apparatus that is applicable to drying sludge, and this method makes that operational safety is continuous, labour intensity is low, energy consumption is low, dissipation is low.
Technical scheme:Mud rake formula drying installation of the present invention, its result is: be respectively equipped with left shaft holder, right bearing seat at the two ends of drying machine housing, rotating shaft is arranged in the drying machine housing, and its two ends are arranged at respectively in left shaft holder, the right bearing seat; The part that rotating shaft is positioned at right bearing seat one end connects the output terminal of step-down gear, and the input terminus of step-down gear connects motor through shaft coupling; On the perisporium of drying machine housing one end, be provided with drying medium inlet, mud inlet, on the perisporium of drying machine housing one end, be provided with the drying medium outlet, be provided with built-in gas-solid separator, on the wall of rotating shaft, be provided with rake teeth in drying medium outlet bottom.
The drying method for sludge of mud rake formula drying installation of the present invention is: thermal medium (being generally hot flue gas or warm air) gets into mud rake formula drying installation from drying medium inlet tangential; Wet mud adds from the mud inlet of mud rake formula drying installation one end; In drying installation, directly contact the realization drying process with thermal medium; Rake formula device both carried out fragmentation to block mud; Again mud is advanced to outlet by inlet, dewatered sludge moves to the drying medium outlet of the other end of rake formula drying installation under the effect of drying medium and rake teeth, separates through the effect of built-in gas-solid separator and with drying medium and discharges drying installation.
Wet mud gets into from an end of rake type drier continuously, and thermal medium directly contacts with mud, and the other end from drying machine after super-dry is discharged continuously, is a kind of method of direct, successive drying.
The thermal medium tangential gets into the mud rake type drier, and the thermal medium entry design of drying machine becomes the spiral case form, makes air-flow in drying machine, present swirling motion to a certain degree, has strengthened heat, matter transmittance process in the drying machine.
The dual function of rake formula device can broken mud, can promote mud again and moved to outlet by inlet, has reduced the resistance of air-flow.
The exit end of drying machine is provided with built-in gas-solid separator, makes dewatered sludge separate with drying medium, directly discharges from the exit end of drying machine, has simplified the setting of system.
Beneficial effect:Compare with traditional rake type drier, the present invention has following advantage:
1, traditional rake type drier can not continuous feeding and discharging and is caused productivity lower; The advantage of present method is that at first wet mud gets into from an end of rake type drier continuously; The other end from drying machine after super-dry is discharged continuously, is a kind of method of successive drying, has significantly improved throughput.
2, traditional rake type drier adopts the drying mode of indirect heating more and causes thermo-efficiency lower; The advantage of present method is that drying medium directly contacts with mud; Be a kind of heat transfer by forced convection mass transfer process, mud can obtain heat very soon and heat up from drying medium, shortened the evaporation time of moisture in the mud; Thereby improved the working efficiency of mud rake type drier, significantly improved thermo-efficiency and throughput.
3, dried heat medium tangential gets into the mud rake type drier; Make drying medium advance, prolonged the residence time of drying medium in drying machine, under same drying conditions at the drying machine internal screw; The drying medium temperature of drying machine outlet decreases, and has improved the heat utilization efficiency of drying medium.
4, the dual function of rake formula device; Can broken mud, it is agglomerating to have avoided mud in drying machine, to bond, and has strengthened heat, the matter transmittance process of mud and drying medium; Can promote mud again and move to outlet, reduce the resistance of drying medium through sludge drier by inlet.
5, the exit end of drying machine is provided with built-in gas-solid separator, makes dewatered sludge directly discharge from the exit end of drying machine.The setting of system has been simplified in the effect of rake formula device and built-in gas-solid separator, greatly reduces the installed capacity of drying medium e Foerderanlage, thereby has reduced the drying cost of unit sludge.
Description of drawings
Fig. 1 is a mud rake formula drying installation synoptic diagram, and Fig. 2 is positioned at drying medium inlet 6 to go out among Fig. 1
The sectional structure synoptic diagram.Wherein have:
Left shaft holder 1, right bearing seat 8, drying medium outlet 2, drying machine housing 3, axle 4, rake teeth 5, drying medium inlet 6, mud inlet 7, step-down gear 9, built-in splitter 10, shaft coupling 11, motor 12.
Embodiment
The structure of mud rake formula drying installation does, is respectively equipped with left shaft holder 1, right bearing seat 8 at the two ends of drying machine housing 3, and rotating shaft 4 is arranged in drying machine housing 3, and its two ends are arranged at respectively in left shaft holder 1, the right bearing seat 8; The part that rotating shaft 4 is positioned at right bearing seat 8 one ends connects the output terminal of step-down gear 9, and the input terminus of step-down gear 9 connects motor 12 through shaft coupling 11; On the perisporium of drying machine housing 3 one ends, be provided with drying medium inlet 6, mud inlet 7; On the perisporium of drying machine housing 3 one ends, be provided with drying medium outlet 2; Export 2 bottoms at drying medium and be provided with built-in gas-solid separator 10, on the wall of rotating shaft 4, be provided with rake teeth 5.
The dried heat medium gets into the mud rake type drier by inlet 6 tangentials; Wet mud adds from an end 7 of mud rake type drier; In drying machine, directly contact the realization drying process with thermal medium; Rake formula device 5 had both carried out fragmentation to block mud, again mud was advanced to outlet by inlet, and dewatered sludge is moved to the other end of rake type drier in the effect of drying medium and rake formula device; Separate with drying medium through the effect of built-in gas-solid separator and discharge drying machine, the drying medium after the gas solid separation is discharged drying machines by outlet 2.
Wet mud gets into from an end of rake type drier continuously, and thermal medium directly contacts with mud, and the other end from drying machine after super-dry is discharged continuously, is a kind of method of direct, successive drying.
The thermal medium tangential gets into the mud rake type drier, and the thermal medium entry design of drying machine becomes the spiral case form, makes air-flow in drying machine, present swirling motion to a certain degree, has strengthened heat, matter transmittance process in the drying machine.
The dual function of rake formula device can broken mud, can promote mud again and moved to outlet by inlet, has reduced the resistance of air-flow.
The exit end of drying machine is provided with built-in gas-solid separator, makes dewatered sludge separate with drying medium, directly discharges from the exit end of drying machine, has simplified the setting of system.
Claims (2)
1. a mud is harrowed the formula drying installation; It is characterized in that being respectively equipped with left shaft holder (1), right bearing seat (8) at the two ends of drying machine housing (3); Rotating shaft (4) is arranged in drying machine housing (3), and its two ends are arranged at respectively in left shaft holder (1), the right bearing seat (8); The part that rotating shaft (4) is positioned at right bearing seat (8) one ends connects the output terminal of step-down gear (9), and the input terminus of step-down gear (9) connects motor (12) through shaft coupling (11); On the perisporium of drying machine housing (3) one ends, be provided with drying medium inlet (6), mud inlet (7); On the perisporium of drying machine housing (3) one ends, be provided with drying medium outlet (2); Be provided with built-in gas-solid separator (10) in drying medium outlet (2) bottom, on the wall of rotating shaft (4), be provided with rake teeth (5).
2. the drying method for sludge of an a kind of mud rake formula drying installation as claimed in claim 1; It is characterized in that thermal medium gets into mud rake formula drying installation from drying medium inlet (6) tangential; Wet mud adds from the mud inlet (7) of mud rake formula drying installation one end; In drying installation, directly contact the realization drying process with thermal medium; Rake formula device both carried out fragmentation to block mud; Again mud is advanced to outlet by inlet, dewatered sludge moves to the drying medium outlet (2) of the other end of rake formula drying installation under the effect of drying medium and rake teeth (5), separates through the effect of built-in gas-solid separator (10) and with drying medium and discharges drying installation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101751583A CN102674655A (en) | 2012-05-31 | 2012-05-31 | Sludge harrow type drying method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101751583A CN102674655A (en) | 2012-05-31 | 2012-05-31 | Sludge harrow type drying method and device |
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| CN102674655A true CN102674655A (en) | 2012-09-19 |
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| CN2012101751583A Pending CN102674655A (en) | 2012-05-31 | 2012-05-31 | Sludge harrow type drying method and device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755120A (en) * | 2014-01-02 | 2014-04-30 | 东南大学 | Airflow harrow type sludge dryer |
| CN103964664A (en) * | 2014-05-23 | 2014-08-06 | 东南大学 | Sludge drying/incineration integrated machine and method thereof |
| CN104529125A (en) * | 2014-12-17 | 2015-04-22 | 北京水泥厂有限责任公司 | Sludge drying tower and method for drying sludge by use of drying tower |
| CN104909534A (en) * | 2015-04-03 | 2015-09-16 | 浙江三联环保机械设备有限公司 | Rotor drying device capable of preventing sludge hardening |
| CN105000771A (en) * | 2014-11-11 | 2015-10-28 | 浙江三联环保机械设备有限公司 | Device for sludge anhydration |
| CN105000772A (en) * | 2014-11-11 | 2015-10-28 | 浙江三联环保机械设备有限公司 | Sludge anhydration device |
| CN105000773A (en) * | 2014-11-11 | 2015-10-28 | 浙江三联环保机械设备有限公司 | Dehydration anhydration device |
| CN105016599A (en) * | 2014-11-11 | 2015-11-04 | 浙江三联环保机械设备有限公司 | Sludge dehydration treatment device |
| CN105016596A (en) * | 2014-11-11 | 2015-11-04 | 浙江三联环保机械设备有限公司 | Rotor drying device |
| CN105016598A (en) * | 2014-11-11 | 2015-11-04 | 浙江三联环保机械设备有限公司 | Sludge heating and drying device |
| CN105016597A (en) * | 2014-11-11 | 2015-11-04 | 浙江三联环保机械设备有限公司 | Sludge heat-drying machine |
| CN105084707A (en) * | 2014-11-11 | 2015-11-25 | 浙江三联环保机械设备有限公司 | Sludge fragmentation-type drying device |
| CN105084706A (en) * | 2014-11-11 | 2015-11-25 | 浙江三联环保机械设备有限公司 | Rotor-type sludge drying device |
| CN109608002A (en) * | 2019-01-31 | 2019-04-12 | 韩慧桥 | A kind of sludge drier |
| CN109928598A (en) * | 2019-03-28 | 2019-06-25 | 北京科技大学 | Sludge deep drying method and system based on air dielectric circulation |
| CN111547983A (en) * | 2020-05-06 | 2020-08-18 | 东南大学 | Horizontal air chamber flash evaporation dryer for sludge drying |
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| CN102390672A (en) * | 2011-06-28 | 2012-03-28 | 苏州市自力化工设备有限公司 | Feeding and pushing device of sludge drying machine |
| CN102464442A (en) * | 2010-11-18 | 2012-05-23 | 江都苏能电气设备有限公司 | Hot waste gas and sludge cooperative treatment system |
| CN202671370U (en) * | 2012-05-31 | 2013-01-16 | 东南大学 | Sludge rake-type drying device |
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| CN1389697A (en) * | 2002-06-20 | 2003-01-08 | 周立秋 | Airflow jetting equipment for drying slurry and paste |
| CN201240983Y (en) * | 2008-08-15 | 2009-05-20 | 广西长润环保科技有限公司 | Causticizing white slime harmlessness cyclic utilization system |
| KR100927824B1 (en) * | 2009-06-04 | 2009-11-23 | 주식회사 세트이엔지 | Apparatus for low temperature drying of sludge using heat of sewage |
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| CN102390672A (en) * | 2011-06-28 | 2012-03-28 | 苏州市自力化工设备有限公司 | Feeding and pushing device of sludge drying machine |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755120A (en) * | 2014-01-02 | 2014-04-30 | 东南大学 | Airflow harrow type sludge dryer |
| CN103964664A (en) * | 2014-05-23 | 2014-08-06 | 东南大学 | Sludge drying/incineration integrated machine and method thereof |
| CN105016597A (en) * | 2014-11-11 | 2015-11-04 | 浙江三联环保机械设备有限公司 | Sludge heat-drying machine |
| CN105084707A (en) * | 2014-11-11 | 2015-11-25 | 浙江三联环保机械设备有限公司 | Sludge fragmentation-type drying device |
| CN105000771A (en) * | 2014-11-11 | 2015-10-28 | 浙江三联环保机械设备有限公司 | Device for sludge anhydration |
| CN105000772A (en) * | 2014-11-11 | 2015-10-28 | 浙江三联环保机械设备有限公司 | Sludge anhydration device |
| CN105000773A (en) * | 2014-11-11 | 2015-10-28 | 浙江三联环保机械设备有限公司 | Dehydration anhydration device |
| CN105016599A (en) * | 2014-11-11 | 2015-11-04 | 浙江三联环保机械设备有限公司 | Sludge dehydration treatment device |
| CN105016596A (en) * | 2014-11-11 | 2015-11-04 | 浙江三联环保机械设备有限公司 | Rotor drying device |
| CN105016598A (en) * | 2014-11-11 | 2015-11-04 | 浙江三联环保机械设备有限公司 | Sludge heating and drying device |
| CN105016599B (en) * | 2014-11-11 | 2017-04-26 | 浙江三联环保科技股份有限公司 | Sludge dehydration treatment device |
| CN105084706B (en) * | 2014-11-11 | 2017-04-26 | 浙江三联环保科技股份有限公司 | Rotor-type sludge drying device |
| CN105084706A (en) * | 2014-11-11 | 2015-11-25 | 浙江三联环保机械设备有限公司 | Rotor-type sludge drying device |
| CN105000773B (en) * | 2014-11-11 | 2017-01-18 | 浙江三联环保科技股份有限公司 | Dehydration anhydration device |
| CN105000771B (en) * | 2014-11-11 | 2017-03-29 | 浙江三联环保科技股份有限公司 | A kind of device for sludge drying |
| CN104529125A (en) * | 2014-12-17 | 2015-04-22 | 北京水泥厂有限责任公司 | Sludge drying tower and method for drying sludge by use of drying tower |
| CN104909534A (en) * | 2015-04-03 | 2015-09-16 | 浙江三联环保机械设备有限公司 | Rotor drying device capable of preventing sludge hardening |
| CN109608002A (en) * | 2019-01-31 | 2019-04-12 | 韩慧桥 | A kind of sludge drier |
| CN109608002B (en) * | 2019-01-31 | 2021-10-22 | 南京大建环境科技产业发展有限公司 | Sludge drying machine |
| CN109928598A (en) * | 2019-03-28 | 2019-06-25 | 北京科技大学 | Sludge deep drying method and system based on air dielectric circulation |
| CN109928598B (en) * | 2019-03-28 | 2020-12-18 | 北京科技大学 | Sludge deep drying method and system based on air medium circulation |
| CN111547983A (en) * | 2020-05-06 | 2020-08-18 | 东南大学 | Horizontal air chamber flash evaporation dryer for sludge drying |
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Application publication date: 20120919 |