CN104058571A - Double-chamber fluidized bed sludge dryer - Google Patents
Double-chamber fluidized bed sludge dryer Download PDFInfo
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- CN104058571A CN104058571A CN201410311157.6A CN201410311157A CN104058571A CN 104058571 A CN104058571 A CN 104058571A CN 201410311157 A CN201410311157 A CN 201410311157A CN 104058571 A CN104058571 A CN 104058571A
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- kiln
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- sludge
- fluidized
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- 239000010802 sludge Substances 0.000 title claims abstract description 35
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 239000004744 fabric Substances 0.000 claims description 25
- 238000012546 transfer Methods 0.000 claims description 20
- 238000001035 drying Methods 0.000 abstract description 19
- 238000005265 energy consumption Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 3
- 239000008187 granular material Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010865 sewage Substances 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
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
Abstract
A double-chamber fluidized bed sludge dryer comprises a distribution chamber, an air chamber, a drying chamber, a cyclone separator and the like. The double-chamber fluidized bed sludge dryer is mainly characterized in that the side end surface of the distribution chamber is connected with a wet sludge feeding pipe, a plurality of ball valves are arranged on the upper end surface of the distribution chamber, a plurality of sludge spraying nozzles are arranged on the lower end surface of the distribution chamber, the centers of the ball valves coincide with the centers of the sludge spraying nozzles in the vertical direction, the air chamber and the drying chamber are respectively divided into two corresponding sub-chambers, the first air sub-chamber is filled with 67%-75% of total air, and 67%-75% of the total heat exchange surface of a heater is formed in the first drying sub-chamber. Under the condition that the work of the dryer is not influenced, the sludge spraying nozzles blocked by sundries like braided straps mixed in sludge can be quickly unblocked. In addition, the double-chamber fluidized bed sludge dryer has the advantages that feeding is uniform, dry sludge particulates are uniform in water content, the energy consumption is low, the drying efficiency is high, and operation is reliable.
Description
Technical field
The present invention relates to a kind of two chambers fluidized-bed sludge dryer, belong to drying sludge technical field.
Background technology
Mud is city or industrial sewage product after treatment, and in sewage, approximately 70% pollutent is transferred in mud, contains the hazardous and noxious substances such as bacterium and heavy metal, can cause serious secondary pollution to environment if deal with improperly.High, the difficult dehydration of wet moisture percentage in sewage sludge, palpus drying just can stable burning after processing.Common mechanical mummification mode energy consumption is high, dehydration rate is low, is difficult to meet industrial needs, and fluidised bed drying has the advantages such as dehydration rate is high, unit consumption of energy is low, is applied to gradually wet drying sludge.But mud contains the foreign material such as sandstone, woven bag, usually stops up mud nozzle, have a strong impact on moisture eliminator operation steady in a long-term.Fluidized bed dryer also exists the design of the key position such as air compartment, heat transfer tube unreasonable in addition, cause dewatered sludge in the end in an air compartment overstand, upper strata heat transfer tube do not immerse the medium problem of bed material, drying process efficiency of utilization is low, energy consumption unreasonable distribution.
Summary of the invention
Goal of the invention: for above-mentioned prior art, propose a kind of two chambers fluidized-bed sludge dryer, can solve due to the often blocked normal operation that affects fluidized bed dryer of mud nozzle.
Technical scheme: for addressing the above problem, the two chambers of the one fluidized-bed sludge dryer that the present invention takes, comprises feed-pipe, cloth chamber, kiln, air compartment, vapor pipe and inlet pipe; Described cloth chamber 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 chamber, and described kiln right side wall is provided with upflow tube, described air compartment be arranged on kiln under; Wherein, the upper surface of described cloth chamber is provided with several ball valves, one end of described each ball valve is all communicated with cloth chamber, and the lower surface of cloth chamber is provided with several mud nozzles, the through hole central axis correspondence of described each ball valve and the through hole central axes of a mud 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 chamber 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 of right side wall ratio; At described the first sub-kiln and the second sub-kiln, interchanger is evenly set; Described air compartment is connected with kiln by air distribution plate.
Further, also comprise the cyclonic separator that is arranged on described vapor pipe end.
Further, the through hole internal diameter of described mud nozzle is 8～15mm, and the through hole width between centers of adjacent mud 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 2～3 times of pipe external diameters, in interchanger, to be positioned at the vertical range at lower-most point place in kiln its right end face be 400～600mm for the axis of top layer heat transfer tube and the through hole of described upflow tube, and the axis of lowest layer heat transfer tube and the distance of described air distribution plate are 200～400mm.
Further, described mud nozzle cross-section is circular, every 3 between two adjacent nozzle be equilateral triangle and distribute.
Beneficial effect: of the present invention pair of chamber fluidized-bed sludge dryer, the through hole central axis correspondence of the each ball valve arranging in the upper surface of cloth chamber and the through hole central axes of a mud nozzle, thereby make after mud nozzle stops up, corresponding nozzle is dredged after can opening in time ball valve.This structure is specially adapted to the wet drying sludge that contains 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 is further dried.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 of right side wall ratio, thereby 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 for depth drying, required heat is few than 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, cause the time that redrying spends to be strengthened, be dried the problems such as incomplete, if ratio is less than 2～3:1, cause being dried not exclusively, the second sub-kiln wasted heat, has improved the problems such as the second sub-kiln Outlet Gas Temperature.The interchanger of arranging in the first sub-kiln accounts for 67%～75% of total heat exchanger area equally.First wet mud pass through to be dried by secondary drying chamber after being dried of the first sub-kiln again, is dried the uniformity coefficient that can ensure the dewatered sludge particle water content of discharging from upflow tube higher than the dried mud granule moisture of single chamber fluidized bed dryer uniformity coefficient by double fragmentation.This moisture eliminator is by the Proportionality design to two sub-kiln sizes, the heat transfer tube of simultaneously evenly arranging in two sub-kilns, can make full use of heat transfer tube high heat transfer characteristic in bed material, the two chambers fluidized bed dryer send a letter here energy consumption measure-alike with respect to sub-air compartment is low, dry heat efficiency is high.
At vapor pipe end, cyclonic separator is set, can further isolates the sludge-drying small-particle being mixed in moisture eliminator combustion gas.
Adopt the mud nozzle that through hole internal diameter is 8～15mm, nozzle cross-section is circular, every 3 between two adjacent nozzle be equilateral triangle and distribute, and the through hole width between centers of adjacent mud nozzle is set to 50～150mm, can make the wet mud that enters moisture eliminator be evenly distributed on the heat transfer tube of the first sub-kiln, thereby make the mud uniform drying of being heated, improve drying efficiency.
The upper end of dividing plate is positioned at lower-most point place in kiln its right end face with the through hole of upflow tube and flushes, and is conducive to mud side overflow in drying process, and 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 2～3 times of pipe external diameters, be conducive to maintaining of dry fluidized state, wet mud can not 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, to be positioned at the vertical range at lower-most point place in kiln its right end face be 400～600mm for the axis of top layer heat transfer tube and the through hole of upflow tube, 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.
Brief description of the drawings
Fig. 1 is that two chamber fluidized-bed sludge dryer masters of the embodiment of the present invention 1 look schematic diagram;
Fig. 2 is two chambers fluidized-bed sludge dryer schematic side view of embodiment 1;
Fig. 3 is that two chamber fluidized-bed sludge dryer masters of the embodiment of the present invention 2 look schematic diagram;
In figure: feed-pipe 1, cloth chamber 2, ball valve 21, nozzle 22, the sub-kiln 31 of kiln 3, the first, interchanger 32, the sub-kiln 34 of dividing plate 33, the second, upflow tube 35, air compartment 4, air distribution plate 41, the sub-air compartment 43 of the first sub-air compartment 42, the second, vapor pipe 5, cyclonic separator 6, inlet pipe 7.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done further and explained.
Embodiment 1: as shown in Figure 1 and Figure 2, of the present invention pair of chamber fluidized-bed sludge dryer is made up of feed-pipe 1, cloth chamber 2, kiln 3, air compartment 4, vapor pipe 5, cyclonic separator 6, inlet pipe 7.Cloth chamber 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 chamber 2, and upflow tube 35 is arranged on kiln 3 right side walls.Air compartment 4 be arranged on kiln 3 under, air compartment 4 is connected with kiln 3 by air distribution plate 41.Cyclonic separator 6 is arranged on described vapor pipe 5 ends, and inlet pipe 7 connects air compartment 4.Wherein, the upper surface of cloth chamber 2 is provided with several ball valves 21, one end of each ball valve 21 is all communicated with cloth chamber 2, and the lower surface of cloth chamber 2 is provided with several mud nozzles 22, and the through hole central axis of each ball valve 21 is corresponding and the through hole central axes of a mud nozzle 22.The through hole internal diameter of each mud nozzle 22 is 8～15mm, and the through hole width between centers of adjacent mud nozzle is 50～150mm, and mud nozzle 22 is equilateral triangle distribution.
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 the upper end of dividing plate 33 is positioned at lower-most point place in kiln 3 its right end face with the through hole of upflow tube 35 and flushes.Cloth chamber 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 chamber 2 and the distance of right side wall ratio.At the first sub-kiln 31 and the second sub-kiln 34, interchanger 32 is evenly set, 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 pipes is 100～200mm, tube hub height distance d is 2～3 times of pipe external diameters.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 faces 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 chamber 2 by feed-pipe 1, in nozzle 22 blankings enter the first sub-kiln 31.Dry wind enters air compartment 4 through inlet pipe 7, enters in kiln 3 by air distribution plate 41.Steam, heat conduction wet goods heating agent offer the required heat of 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 is further dried.The overflow of the interior dewatered sludge particle of the second sub-kiln 34 enters the rear discharge of upflow tube 35.The first sub-kiln 31 passes into 67% total blast volume, total heat exchanger area of the interior layout 67% of the first sub-kiln 31.The dry gas producing enters cyclonic separator 6 by vapor pipe 5.Separator combustion gas and be mixed in the mud granule in waste gas.
Embodiment 2: as shown in Figure 3, be only with the difference of embodiment 1: 1, kiln 3 is divided into the first sub-kiln 31 that ratio is 3:1 and total heat exchanger area of the interior layout 75% of the sub-kiln 31 of the second sub-kiln 34, the first 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 independently source of the gas of wrist by inlet pipe respectively, the air output ratio that further control passes into two sub-kilns is set like this, control the first sub-kiln 31 and pass into 75% total blast volume, improve drying efficiency; Other parts are identical with the two chambers 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 (7)
1. two chambers fluidized-bed sludge dryer, is characterized in that: comprise feed-pipe (1), cloth chamber (2), kiln (3), air compartment (4), vapor pipe (5) and inlet pipe (7); Described cloth chamber (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 chamber (2), described kiln (3) right side wall is provided with upflow tube (35), described air compartment (4) be arranged on kiln (3) under; Wherein, the upper surface of described cloth chamber (2) is provided with several ball valves (21), one end of described each ball valve (21) is all communicated with cloth chamber (2), the lower surface of cloth chamber (2) is provided with several mud nozzles (22), the through hole central axis correspondence of described each ball valve (21) and the through hole central axes of a mud nozzle (22).
2. the two chambers of one according to claim 1 fluidized-bed sludge dryer, it is characterized in that: 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 chamber (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 the 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).
3. the two chambers of one according to claim 1 and 2 fluidized-bed sludge dryer, is characterized in that: also comprise the cyclonic separator (6) that is arranged on described vapor pipe (5) end.
4. the two chambers of one according to claim 1 and 2 fluidized-bed sludge dryer, is characterized in that: the through hole internal diameter of described mud nozzle (22) is 8～15mm, and the through hole width between centers of adjacent mud nozzle is 50～150mm.
5. the two chambers of one according to claim 2 fluidized-bed sludge dryer, is characterized in that: the upper end of described dividing plate (33) is positioned at lower-most point place in described kiln (3) its right end face with the through hole of upflow tube (35) and flushes.
6. the two chambers of one according to claim 2 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 2～3 times of pipe external diameters, in interchanger (32), to be positioned at the vertical range at lower-most point place in kiln (3) its right end face be 400～600mm for the axis of top layer heat transfer tube and the through hole of described upflow tube (35), the distance of the axis of lowest layer heat transfer tube and described air distribution plate (41) is 200～400mm.
7. the two chambers of one according to claim 4 fluidized-bed sludge dryer, is characterized in that: described mud nozzle (22) cross section is for circular, every 3 between two adjacent nozzle be equilateral triangle and distribute.
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 |
|---|---|---|---|
| CN201410311157.6A CN104058571B (en) | 2014-07-01 | 2014-07-01 | A kind of two rooms fluidized-bed sludge dryer |
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| CN104058571A true CN104058571A (en) | 2014-09-24 |
| CN104058571B CN104058571B (en) | 2016-01-13 |
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| CN201410311157.6A Expired - Fee Related CN104058571B (en) | 2014-07-01 | 2014-07-01 | A kind of two rooms fluidized-bed sludge dryer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105819654A (en) * | 2015-01-07 | 2016-08-03 | 广州新致晟环保科技机械设备有限公司 | Bottom drying-type sludge drying device and bottom drying-type sludge drying method |
| CN112374722A (en) * | 2020-10-30 | 2021-02-19 | 上海市政工程设计研究总院（集团）有限公司 | Sludge fluidized bed drier |
| CN117387328A (en) * | 2023-12-12 | 2024-01-12 | 山东河清化工科技有限公司 | Green and efficient sea mud drying equipment and drying method |
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| CN101781078A (en) * | 2010-03-10 | 2010-07-21 | 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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2014
- 2014-07-01 CN CN201410311157.6A patent/CN104058571B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781078A (en) * | 2010-03-10 | 2010-07-21 | 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 |
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| 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 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105819654A (en) * | 2015-01-07 | 2016-08-03 | 广州新致晟环保科技机械设备有限公司 | Bottom drying-type sludge drying device and bottom drying-type sludge drying method |
| 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 |
| CN112374722A (en) * | 2020-10-30 | 2021-02-19 | 上海市政工程设计研究总院（集团）有限公司 | Sludge fluidized bed drier |
| 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 |
| CN117387328A (en) * | 2023-12-12 | 2024-01-12 | 山东河清化工科技有限公司 | Green and efficient sea mud drying equipment and drying method |
| 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 |
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| CN104058571B (en) | 2016-01-13 |
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