CN104058571B - A kind of two rooms fluidized-bed sludge dryer - Google Patents
A kind of two rooms fluidized-bed sludge dryer Download PDFInfo
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- CN104058571B CN104058571B CN201410311157.6A CN201410311157A CN104058571B CN 104058571 B CN104058571 B CN 104058571B CN 201410311157 A CN201410311157 A CN 201410311157A CN 104058571 B CN104058571 B CN 104058571B
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- 239000010802 sludge Substances 0.000 title claims abstract description 50
- 239000004744 fabric Substances 0.000 claims abstract description 27
- 238000012546 transfer Methods 0.000 claims description 20
- 238000009826 distribution Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 abstract description 21
- 239000002245 particle Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000010801 sewage sludge Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000008187 granular material Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
A kind of two rooms fluidized-bed sludge dryer, comprises cloth room, air compartment, kiln, cyclonic separator etc.Be primarily characterized in that: side end face, cloth room connects wet sewage sludge feed pipe, and several ball valves are arranged in upper surface, and several sludge nozzle are arranged in lower surface, ball valve center overlaps with in nozzle center vertical direction.Air compartment and kiln are respectively divided into corresponding Liang Ge seed cell, and the first sub-air compartment passes into the total blast volume of 67% ~ 75%, arrange the total heat interchanging area of interchanger of 67% ~ 75% in the first sub-kiln.The present invention can not affect under moisture eliminator working condition, Quick dredging due to the sludge nozzle of the foreign material blockings such as the braid that is mixed with in mud, advantages such as there is uniform blanking, dewatered sludge particle water content is even, energy consumption is low, drying efficiency is high, be reliable.
Description
Technical field
The present invention relates to a kind of two rooms fluidized-bed sludge dryer, belong to drying sludge technical field.
Background technology
Mud is the product after city or Industrial Waste Water Treatments, and in sewage, about 70% pollutent is transferred in mud, containing the hazardous and noxious substances such as bacterium and heavy metal, can cause serious secondary pollution if deal with improperly to environment.Wet moisture percentage in sewage sludge is high, not easily dewater, must just can stable burning after drying process.Common mechanical mummification mode energy consumption is high, dehydration rate is low, be difficult to satisfied industrial needs, and fluidised bed drying has the advantages such as dehydration rate is high, unit consumption of energy is low, is applied to wet drying sludge gradually.But mud contains the foreign material such as sandstone, woven bag, usually blocks sludge nozzle, have a strong impact on moisture eliminator long-term stability and run.In addition fluidized bed dryer also exist the key position such as air compartment, heat transfer tube design unreasonable, cause dewatered sludge in the end overstand in an air compartment, upper strata heat transfer tube do not immerse bed and expect medium problem, drying process efficiency of utilization is low, Energy dissipation is unreasonable.
Summary of the invention
Goal of the invention: for above-mentioned prior art, proposes a kind of two rooms fluidized-bed sludge dryer, can solve because sludge nozzle is often blocked and affect the normal operation of fluidized bed dryer.
Technical scheme: for solving the problem, the one that the present invention takes two rooms fluidized-bed sludge dryer, comprises feed-pipe, cloth room, kiln, air compartment, vapor pipe and inlet pipe; Described cloth room is arranged on the upper left side of kiln, and described vapor pipe is arranged on the upper right side of kiln, and described feed-pipe is arranged on the left end face of cloth room, and described kiln right side wall is provided with upflow tube, and described air compartment is arranged on immediately below kiln; Wherein, the upper surface of described cloth room is provided with several ball valves, one end of described each ball valve is all communicated with cloth room, and the lower surface of cloth room is provided with several sludge nozzle, the through hole central axis correspondence of described each ball valve and the through hole central axes of a sludge nozzle.
Further, described kiln is divided into the first sub-kiln in left side and the second sub-kiln on right side by dividing plate, and described cloth room is arranged on the top of the first sub-kiln, and the inlet mouth of described vapor pipe is arranged on the top of the second sub-kiln; Wherein, described dividing plate is 2 ~ 3:1 with the left side wall of kiln and the distance ratio of right side wall; At described first sub-kiln and the second sub-kiln, evenly interchanger is set; Described air compartment is connected with kiln by air distribution plate.
Further, the cyclonic separator being arranged on described vapor pipe end is also comprised.
Further, the through hole internal diameter of described sludge nozzle is 8 ~ 15mm, and the through hole width between centers of adjacent sludge nozzle is 50 ~ 150mm.
Further, the upper end of described dividing plate and the through hole of upflow tube are positioned at lower-most point place in described kiln its right end face and flush.
Further, described interchanger is some layers of heat transfer tube, heat exchange tube external diameter 32 ~ 57mm, spacing between adjacent two pipes is 100 ~ 200mm, tube hub height distance is pipe external diameter 2 ~ 3 times, in interchanger, the most axis of top layer heat transfer tube and the through hole of described upflow tube are positioned at the vertical range at lower-most point place in kiln its right end face is 400 ~ 600mm, and the axis of lowest layer heat transfer tube and the distance of described air distribution plate are 200 ~ 400mm.
Further, described sludge nozzle cross section is circular, and every 3 adjacent between two nozzles be that equilateral triangle distributes.
Beneficial effect: of the present invention pair of room fluidized-bed sludge dryer, the through hole central axis correspondence of each ball valve arranged in the upper surface of cloth room and the through hole central axes of a sludge nozzle, thus make after sludge nozzle blocks, after ball valve can being opened in time, corresponding nozzle is dredged.This structure is specially adapted to the wet drying sludge containing the foreign matter such as sandstone and woven bag, ensures the normal operation of fluidized bed dryer.
Fluidized-bed sludge dryer of the present invention adopts double-chamber structure, and after wet mud carries out preliminarily dried in the first sub-kiln, overflow enters the second sub-kiln and carries out further drying.Kiln is divided into the first sub-kiln in left side and the second sub-kiln on right side by dividing plate, and dividing plate is 2 ~ 3:1 with the left side wall of kiln and the distance ratio of right side wall, thus make to pass into air quantity in the first sub-kiln and can account for 67% ~ 75% of whole kiln total blast volume, and the second sub-kiln is in order to depth drying, required heat is few compared to the first sub-kiln, so Air Quantity Required is few, reduce the second sub-kiln Outlet Gas Temperature; If ratio is greater than 2 ~ 3:1, the problems such as the time causing redrying to spend strengthens, and drying is incomplete, if ratio is less than 2 ~ 3:1, cause not exclusively dry, the second sub-kiln wasted heat, improves the problems such as the second sub-kiln Outlet Gas Temperature.The interchanger arranged in first sub-kiln accounts for 67% ~ 75% of total heat exchanger area equally.By double fragmentation drying, wet mud, first by dry by secondary drying chamber again after the drying of the first sub-kiln, can ensure that the uniformity coefficient of the dewatered sludge particle water content of discharging from upflow tube is higher than single chamber fluidized bed dryer dried mud granule uniform moisture degree.This moisture eliminator is by the Proportionality design to two sub-kiln sizes, evenly to arrange in two sub-kilns heat transfer tube simultaneously, can make full use of heat transfer tube high heat transfer characteristic in bed material, the two rooms fluidized bed dryer send a letter here energy consumption measure-alike relative to sub-air compartment is low, dry heat efficiency is high.
Cyclonic separator is set at vapor pipe end, the sludge-drying small-particle be mixed in moisture eliminator combustion gas can be isolated further.
Through hole internal diameter is adopted to be the sludge nozzle of 8 ~ 15mm, nozzle cross-section is circular, every 3 adjacent between two nozzles are equilateral triangle distribution, and the through hole width between centers of adjacent sludge nozzle is set to 50 ~ 150mm, the wet mud entering moisture eliminator can be made to be evenly distributed on the heat transfer tube of the first sub-kiln, thus mud is heated uniform drying, improve drying efficiency.
The upper end of dividing plate and the through hole of upflow tube are positioned at lower-most point place in kiln its right end face and flush, and be conducive to mud side overflow in drying process, dewatered sludge load is large.
Interchanger is 6 ~ 10 layers of heat transfer tube, heat exchange tube external diameter 32 ~ 57mm, spacing between adjacent two heat transfer tubes is 100 ~ 200mm, tube hub height distance is pipe external diameter 2 ~ 3 times, be conducive to the maintenance of dry fluidized state, wet mud can not be piled up on the pipe of upper strata, and in unit interfacial surface, heat interchanging area is large, is beneficial to raising production capacity; In interchanger, the most axis of top layer heat transfer tube and the through hole of upflow tube are positioned at the vertical range at lower-most point place in kiln its right end face is 400 ~ 600mm, ensures mud granule energy submergence interchanger the superiors pipe in kiln, is conducive to mud granule overflow; The axis of lowest layer heat transfer tube and the distance of described air distribution plate are 200 ~ 400mm, ensure that mud granule is good in this region fluidisation.
Accompanying drawing explanation
Fig. 1 is two rooms fluidized-bed sludge dryer schematic front view of the embodiment of the present invention 1;
Fig. 2 is two rooms fluidized-bed sludge dryer schematic side view of embodiment 1;
Fig. 3 is two rooms fluidized-bed sludge dryer schematic front view of the embodiment of the present invention 2;
In figure: feed-pipe 1, cloth room 2, ball valve 21, nozzle 22, kiln 3, the first sub-kiln 31, interchanger 32, dividing plate 33, the second sub-kiln 34, upflow tube 35, air compartment 4, air distribution plate 41, the sub-air compartment 43 of first sub-air compartment 42, second, vapor pipe 5, cyclonic separator 6, inlet pipe 7.
Embodiment
Below in conjunction with accompanying drawing the present invention done and further explain.
Embodiment 1: as shown in Figure 1 and Figure 2, of the present invention pair of room fluidized-bed sludge dryer is made up of feed-pipe 1, cloth room 2, kiln 3, air compartment 4, vapor pipe 5, cyclonic separator 6, inlet pipe 7.Cloth room 2 is arranged on the upper left side of kiln 3, and vapor pipe 5 is arranged on the upper right side of kiln 3; Feed-pipe 1 is arranged on the left end face of cloth room 2, and upflow tube 35 is arranged on kiln 3 right side wall.Air compartment 4 is arranged on immediately below kiln 3, and air compartment 4 is connected with kiln 3 by air distribution plate 41.Cyclonic separator 6 is arranged on described vapor pipe 5 end, and inlet pipe 7 connects air compartment 4.Wherein, the upper surface of cloth room 2 is provided with several ball valves 21, one end of each ball valve 21 is all communicated with cloth room 2, and the lower surface of cloth room 2 is provided with several sludge nozzle 22, and the through hole central axis of each ball valve 21 is corresponding and the through hole central axes of a sludge nozzle 22.The through hole internal diameter of each sludge nozzle 22 is 8 ~ 15mm, and the through hole width between centers of adjacent sludge nozzle is 50 ~ 150mm, and sludge nozzle 22 distribution in equilateral triangle.
Kiln 3 is divided into the first sub-kiln 31 in left side and the second sub-kiln 34 on right side by dividing plate 33, and the lower end of dividing plate 33 connects the bottom of kiln 31, and upper end and the through hole of upflow tube 35 of dividing plate 33 are positioned at lower-most point place in kiln 3 its right end face and flush.Cloth room 2 is arranged on the top of the first sub-kiln 31, and the inlet mouth of vapor pipe 5 is arranged on the top of the second sub-kiln 34.Wherein, dividing plate 33 is 2:1 with the left side wall of cloth room 2 and the distance ratio of right side wall.Evenly arrange interchanger 32 at the first sub-kiln 31 and the second sub-kiln 34, interchanger 32 is 6 ~ 10 layers of heat transfer tube.The heat exchange tube external diameter 32 ~ 57mm of interchanger 32, the spacing b between heat transfer tube two pipe is 100 ~ 200mm, and tube hub height distance d is pipe external diameter 2 ~ 3 times.The distance a of top layer heat transfer tube center and upflow tube 35 lower-most point on the second sub-kiln 34 side end face is 400 ~ 600mm, and the distance c of lowest layer heat transfer tube center and air distribution plate 41 is 200 ~ 400mm.
Wet mud utilizes spiral pump to be delivered to cloth room 2 by feed-pipe 1, enters in the first sub-kiln 31 through nozzle 22 blanking.Dry wind enters air compartment 4 through inlet pipe 7, is entered in kiln 3 by air distribution plate 41.Steam, heat conduction wet goods heating agent are supplied to the heat needed for drying sludge by interchanger 32.After wet mud carries out preliminarily dried in the first sub-kiln 31, overflow enters the second sub-kiln 34 and carries out further drying.In second sub-kiln 34, the overflow of dewatered sludge particle is discharged after entering upflow tube 35.First sub-kiln 31 passes into the total blast volume of 67%, arranges total heat exchanger area of 67% in the first sub-kiln 31.The dry gas produced enters cyclonic separator 6 by vapor pipe 5.Separator combustion gas and the mud granule be mingled with in the offgas.
Embodiment 2: as shown in Figure 3, is only with the difference of embodiment 1: 1, kiln 3 is divided into ratio to be the first sub-kiln 31 of 3:1 and total heat exchanger area of the interior layout 75% of the sub-kiln of the second sub-kiln 34, first 31 by dividing plate 33; 2, air compartment 4 is divided into by dividing plate the first sub-air compartment 41 and the second sub-air compartment 42 that left and right ratio is 3:1 equally, two sub-air compartments connect wrist independently source of the gas respectively by inlet pipe, the air output ratio controlling to pass into two sub-kilns is further set like this, control the total blast volume that the first sub-kiln 31 passes into 75%, improve drying efficiency; Other parts are identical with the two rooms fluidised bed drying cell structure in embodiment 1.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. two rooms fluidized-bed sludge dryer, is characterized in that: comprise feed-pipe (1), cloth room (2), kiln (3), air compartment (4), vapor pipe (5) and inlet pipe (7); Described cloth room (2) is arranged on the upper left side of kiln (3), described vapor pipe (5) is arranged on the upper right side of kiln (3), described feed-pipe (1) is arranged on the left end face of cloth room (2), described kiln (3) right side wall is provided with upflow tube (35), and described air compartment (4) is arranged on immediately below kiln (3); Wherein, the upper surface of described cloth room (2) is provided with several ball valves (21), one end of described each ball valve (21) is all communicated with cloth room (2), the lower surface of cloth room (2) is provided with several sludge nozzle (22), the through hole central axis correspondence of described each ball valve (21) and the through hole central axes of a sludge nozzle (22); Described kiln (3) is divided into the first sub-kiln (31) in left side and the second sub-kiln (34) on right side by dividing plate (33), described cloth room (2) is arranged on the top of the first sub-kiln (31), and the inlet mouth of described vapor pipe (5) is arranged on the top of the second sub-kiln (34); Wherein, described dividing plate (33) is 2 ~ 3:1 with the left side wall of kiln (3) and the distance ratio of right side wall; At described first sub-kiln (31) and the second sub-kiln (34), interchanger (32) is evenly set; Described air compartment (4) is connected with kiln (3) by air distribution plate (41).
2. one according to claim 1 two rooms fluidized-bed sludge dryer, is characterized in that: also comprise the cyclonic separator (6) being arranged on described vapor pipe (5) end.
3. one according to claim 1 and 2 two rooms fluidized-bed sludge dryer, it is characterized in that: the through hole internal diameter of described sludge nozzle (22) is 8 ~ 15mm, the through hole width between centers of adjacent sludge nozzle is 50 ~ 150mm.
4. one according to claim 2 two rooms fluidized-bed sludge dryer, is characterized in that: upper end and the through hole of upflow tube (35) of described dividing plate (33) are positioned at lower-most point place in described kiln (3) its right end face and flush.
5. one according to claim 2 two rooms fluidized-bed sludge dryer, it is characterized in that: described interchanger is some layers of heat transfer tube, heat exchange tube external diameter 32 ~ 57mm, spacing between adjacent two heat exchange tubes is 100 ~ 200mm, tube hub height distance is pipe external diameter 2 ~ 3 times, in interchanger (32), the most axis of top layer heat transfer tube and the through hole of described upflow tube (35) are positioned at the vertical range at lower-most point place in kiln (3) its right end face is 400 ~ 600mm, the axis of lowest layer heat transfer tube and the distance of described air distribution plate (41) are 200 ~ 400mm.
6. one according to claim 4 two rooms fluidized-bed sludge dryer, is characterized in that: described sludge nozzle (22) cross section is for circular, and every 3 adjacent between two nozzles be that equilateral triangle distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410311157.6A CN104058571B (en) | 2014-07-01 | 2014-07-01 | A kind of two rooms fluidized-bed sludge dryer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410311157.6A CN104058571B (en) | 2014-07-01 | 2014-07-01 | A kind of two rooms fluidized-bed sludge dryer |
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| Publication Number | Publication Date |
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| CN104058571A CN104058571A (en) | 2014-09-24 |
| CN104058571B true CN104058571B (en) | 2016-01-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105819654B (en) * | 2015-01-07 | 2023-03-24 | 广州正晟科技有限公司 | Bottom drying type sludge drying device and method |
| CN105000782A (en) * | 2015-07-24 | 2015-10-28 | 中山沃尔威多水处理设备有限公司 | Plate-type vaporizing drying system and technology for treating oily sludge |
| CN105618466A (en) * | 2016-03-18 | 2016-06-01 | 安徽国孚润滑油工业有限公司 | Dry distillation tower based on heat tube |
| CN112374722B (en) * | 2020-10-30 | 2021-11-02 | 上海市政工程设计研究总院（集团）有限公司 | Sludge fluidized bed drier |
| CN117387328B (en) * | 2023-12-12 | 2024-02-06 | 山东河清化工科技有限公司 | Green and efficient sea mud drying equipment and drying method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781078B (en) * | 2010-03-10 | 2011-06-29 | 天津市美好生活科技有限公司 | System device for directly and effectively spray-drying high-solid-content sludge and method thereof |
| CN102643006A (en) * | 2012-05-09 | 2012-08-22 | 江苏中容环保有限公司 | Method for drying sewage sludge in fluidized bed reactor |
| CN102643007A (en) * | 2012-05-09 | 2012-08-22 | 江苏中容环保有限公司 | Drying device for sewage sludge |
| CN203382631U (en) * | 2013-06-24 | 2014-01-08 | 成都源创环保工程有限公司 | Fluidized bed sludge dryer |
| CN203513458U (en) * | 2013-11-05 | 2014-04-02 | 四川四通欧美环境工程有限公司 | Fluidized bed sludge drier |
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