CN105417926A - Indirect sludge drying device adopting tubular rotary furnace - Google Patents
Indirect sludge drying device adopting tubular rotary furnace Download PDFInfo
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- CN105417926A CN105417926A CN201511029473.5A CN201511029473A CN105417926A CN 105417926 A CN105417926 A CN 105417926A CN 201511029473 A CN201511029473 A CN 201511029473A CN 105417926 A CN105417926 A CN 105417926A
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- China
- Prior art keywords
- rotating cylinder
- mud
- drying device
- rotary kiln
- steam
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
Abstract
The invention discloses an indirect sludge drying device adopting a tubular rotary furnace. The indirect sludge drying device comprises a charging device, a rotary cylinder, steam circulating pipes and a discharging device. A charging opening for charging is formed in one end of the charging device, and the other end of the charging device is connected with one end of the rotary cylinder. A plurality of steam circulating pipe groups are arranged in the rotary cylinder. The other end of the rotary cylinder is connected with the discharging device, a dry sludge discharging port for discharging is formed in the lower end of the discharging device, a drying water vapor outlet for discharging out water vapor is formed in the upper end of the discharging device and is connected with a fan, and micro negative pressure is formed in the rotary furnace through air exhausting of the fan so as to draw out water vapor. The indirect sludge drying device is low energy consumption in an outer drive mode and is firm in structure, convenient to maintain, not prone to damage, wider in sludge application range and high in tolerance to sundries contained in sludge.
Description
Technical field
The invention belongs to sludge drying technique field, relate to a kind of mud indirectly drying device adopting shell and tube rotary kiln.
Background technology
Sludge drying technique is divided into direct mummification and indirectly drying, and direct mummification is that thermal medium (normally high-temperature flue gas) is directly contacted with mud, makes the moisture vaporization contained in mud, thus reaches the object of dewatered sludge.Indirectly drying is then that thermal medium does not directly contact with mud, and existing mud indirectly drying technique adopts hollow blade drier and disk drying machine usually.Its principle in hollow blade or hollow disk, passes into thermal medium (be generally water vapor, also can be other thermal medium of heat conduction wet goods), heat is passed to outside mud, the water contained is heated up and gasifies, thus reach the object of dewatered sludge in mud.
The direct mummification that existing great majority adopt is the direct drying process of rotary kiln flue gas.Flue gas direct mummification rotary kiln main body is a rotary kiln having slight slope to settle, pass into temperature in stove simultaneously and be about the high-temperature flue gas of 1000 DEG C and wet mud, both directly contact, mud rotates and upset of rising with furnace wall, with smoke contacts, thus the moisture in mud is gasified by flue gas heating, thus realizes the object of dewatered sludge.The defect that this treatment process exists is that exhaust temperature is still higher, and heat waste is large, and thermo-efficiency is low, and a large amount of tail gas is containing foul smelling, is difficult to process.
The indirectly drying that existing great majority adopt is oar blade type/disc type drying process.Paddle-dryer is a kind of based on the Horizontal stirring type drying machine of conduction.Agent structure is the W shell body with chuck, built with paired hollow low speed revolution quill shaft, axle is welded with some agitating vanes.All pass to thermal barrier in chuck and hollow agitating vane, two kinds of hot faces are simultaneously to heating material.Blade opposite direction rotating, two inclined-planes of blade repeatedly stir, compress, relax and advance material, and make the page have unique self-cleaning ability, hot face constantly obtains renewal.Principle and the paddle-dryer of disk drying machine are similar, and difference instead of blade with hollow disk.Thermal barrier is passed in the hollow disk of each layer, the wet mud in thermo-conducting manner indirect heating card placed, rotate rake leaf scrape rake effect under, the moisture in the mud of mobile rolling is made constantly to evaporate at the operational, its steam is discharged with equipment tail gas, thus obtains qualified dry finished product continuously in device bottom.The defect of this treatment process is that equipment vibrations are large, noise is large, affects operating environment; Mud easily forms seize, bridge formation, blocking, can make motor overload time serious; Main shaft bearing load is large, and easy to wear, high-temperature heat-conductive working medium in most cases need be entered from the drive end of hollow spindle, brings out from passive, and cause the working temperature of bearing very high, work-ing life is short, changes frequent; Along with mud is by mummification, abrasiveness is strengthened, and add the silt contained in mud, equipment attrition is serious; As extensive damage can be produced to equipment containing hard impurities in mud.
Summary of the invention
The object of the invention is for above-mentioned the deficiencies in the prior art, a kind of mud indirectly drying device adopting shell and tube rotary kiln is provided.
Mud tiny structure steam mummification rotary kiln of the present invention comprises feeding device, rotating cylinder, steam circulating pipe, drawing mechanism; One end of feeding device is provided with for reinforced reinforced opening, and the other end is connected with one end of rotating cylinder; Be provided with some steam circulating pipe groups in rotating cylinder, every steam circulating pipe group is provided with steam circulating pipe that is some and rotating cylinder axis being parallel, and steam circulating pipe is along the uniform setting of rotating cylinder inwall circumference, and rotates together with rotating cylinder; The other end of rotating cylinder is connected with drawing mechanism, and this drawing mechanism lower end is provided with the dewatered sludge discharge port for discharging, upper end is provided with the mummification steam outlet for discharging water vapor, this mummification steam outlet connecting fan, forms tiny structure to extract water vapor out by exhaust fan in rotary kiln;
The distance of described steam circulating pipe and rotating cylinder inwall is about 100mm ~ 150mm, and arbitrary neighborhood two steam cycle tube spacing is about 80mm ~ 150mm, must not be less than 80mm, in order to avoid sludge blockage.
Described drawing mechanism is also provided with drawing mechanism temperature control near the position of mummification steam outlet, for monitoring the temperature of mummification water vapor;
Mummification rotary kiln outside of the present invention is also provided with steam swivel joint, is convenient to safeguard;
The both ends of described rotating cylinder are also provided with Support bracket, and for supporting rotating cylinder rotatably, feeding side bracket, a little more than exit side bracket, makes rotating cylinder axis have the obliquity of about 1/100 relative to sea line;
Mummification rotary kiln outside of the present invention is also provided with transmission mechanism, and rotating cylinder is rotated relative to feeding device and drawing mechanism;
Described feeding device comprises feed-screw pump further, and this feed-screw pump is arranged in feeding device, and can extend into certain distance in rotating cylinder, and this feed-screw pump forms the sealing of mud self by the densification of running extruding mud;
Described drawing mechanism comprises discharging sealing screw further, and this discharging sealing screw is arranged in drawing mechanism, and can extend into certain distance in rotating cylinder, and this discharging sealing screw forms sealing by the densification of running extruding stem mud.
Beneficial effect of the present invention:
1) manipulation flexibly, under the prerequisite ensureing quality product, allows treatment capacity wide fluctuations.
2) mass dryness fraction of mud can control, and drying effect is good.
3) outer type of drive energy consumption is little, firm in structure, easy to maintenance, not fragile.
4) can continuous seepage, equipment yield is large, is applicable to the material of successive drying in enormous quantities.
5) drying process is in micro-vacuum state, efficiently avoid the effusion of the bad airs such as the foul smell in treating processes.
6) solid sundries contained in mud is little to apparatus of the present invention influence on system operation, and abrasion is few.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structural representation;
Fig. 2 is the sectional view of rotating cylinder of the present invention and steam circulating pipe;
Wherein 1 is feeding device, and 2 is reinforced opening, and 3 is feed-screw pump, 4 is rotating cylinder, and 5 is steam circulating pipe, and 5-1 is steam inlet pipe, 5-2 is steam outlet pipe, and 6 is mummification steam outlet, and 7 is drawing mechanism temperature control, 8 is drawing mechanism, 9 is steam swivel joint, and 10 is dewatered sludge discharge port, and 11 is discharging sealing screw, 12 is Support bracket, and 13 is transmission mechanism.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further analyzed.
As shown in Figure 1, 2, mud tiny structure steam mummification rotary kiln of the present invention comprises feeding device 1, rotating cylinder 4, steam circulating pipe 5, mummification steam outlet 6, drawing mechanism 8; One end of feeding device 1 is provided with for reinforced reinforced opening 2, and the other end is connected with one end of rotating cylinder 4; Be provided with some steam circulating pipe groups in rotating cylinder 4, every steam circulating pipe group is provided with steam circulating pipe 5 that is some and rotating cylinder 4 axis being parallel, and steam circulating pipe 5 is along the uniform setting of rotating cylinder 4 inwall circumference, and rotates together with rotating cylinder 4; The other end of rotating cylinder 4 is connected with drawing mechanism 8, and this drawing mechanism 8 lower end is provided with the dewatered sludge discharge port 10 for discharging, upper end is provided with the mummification steam outlet 6 for discharging water vapor, this mummification steam outlet 6 connecting fan, forms tiny structure to extract water vapor out by exhaust fan in rotary kiln;
Described steam circulating pipe 5 is divided into steam inlet pipe 5-1 and steam outlet pipe 5-2;
The distance of described steam circulating pipe and rotating cylinder inwall is about 100mm ~ 150mm, and arbitrary neighborhood two steam cycle tube spacing is about 80mm ~ 150mm, must not be less than 80mm, in order to avoid sludge blockage.
Described drawing mechanism 8 is also provided with drawing mechanism temperature control 7 near the position of mummification steam outlet 6, for monitoring the temperature of mummification water vapor;
Mummification rotary kiln outside of the present invention is also provided with steam swivel joint 9, is convenient to safeguard; A1 is high temperature and high pressure steam import, and A2 is high temperature and high pressure steam outlet;
The both ends of described rotating cylinder 4 are also provided with Support bracket 12, and for supporting rotating cylinder 4 rotatably, feeding side bracket, a little more than exit side bracket, makes rotating cylinder axis have the obliquity of about 1/100 relative to sea line;
Mummification rotary kiln outside of the present invention is also provided with transmission mechanism 13, and rotating cylinder 4 is rotated relative to feeding device 1 and drawing mechanism 8;
Described feeding device 1 comprises feed-screw pump 3 further, and this feed-screw pump 3 is arranged in feeding device 1, and can extend into certain distance in rotating cylinder 4, and this feed-screw pump 3 forms the sealing of mud self by the densification of running extruding mud;
Described drawing mechanism 8 comprises discharging sealing screw 11 further, and this discharging sealing screw 11 is arranged in drawing mechanism 8, and can extend into certain distance in rotating cylinder 4, and this discharging sealing screw 11 forms sealing by the densification of running extruding stem mud.
Turning labyrinth is adopted to be tightly connected between described feeding device 1 and rotating cylinder 4; For turning labyrinth is tightly connected between drawing mechanism 8 and rotating cylinder 4;
Utilize the mud indirectly drying technique of said apparatus, this technique comprises the following steps:
Step (1), when mud enters feeding device from reinforced opening 2, inputted rotating cylinder 4 by feed-screw pump 3;
Step (2), because rotating cylinder 4 is with steam circulating pipe 5, in its turning course, mud rolls and beats on revolving drum body wall and between steam circulating pipe, and do not stop and steam circulating pipe contact heat-exchanging, the moisture contained in mud evaporates gradually;
Step (3), have obliquity slightly due to rotating cylinder 4, feed end is a little more than discharge end, and mud gradually near discharge end, finally enters drawing mechanism 8 with cylindrical shell revolution;
Step (4), the mud falling into drawing mechanism 8 are exported by discharging sealing screw 11, and form windrow in dewatered sludge discharge port 10 place, reach sealing effectiveness.
As can be seen from above-mentioned technique:
1) mud free to tumble in rotating cylinder 4, do not extrude by external force, therefore the sandstone contained in mud and metal sundries are to the damage of equipment and denude minimum, correspondingly, mummification rotary furnace equipment of the present invention is high to the foreign material tolerance contained by feed sludge, and treatment effect and normal operation do not affect by it substantially;
2) rotating cylinder 4 and steam circulating pipe 5 structure simple, firm, easy to maintenance, not fragile;
3) outer type of drive energy consumption is little;
4) drying process is in micro-vacuum state, efficiently avoid the effusion of the bad airs such as the foul smell in treating processes.
Above-described embodiment is not that the present invention is not limited only to above-described embodiment for restriction of the present invention, as long as meet application claims, all belongs to protection scope of the present invention.
Claims (9)
1. adopt a mud indirectly drying device for shell and tube rotary kiln, it is characterized in that comprising feeding device, rotating cylinder, steam circulating pipe, drawing mechanism; One end of feeding device is provided with for reinforced reinforced opening, and the other end is connected with one end of rotating cylinder; Some steam circulating pipe groups are provided with in rotating cylinder; The other end of rotating cylinder is connected with drawing mechanism, and this drawing mechanism lower end is provided with the dewatered sludge discharge port for discharging, upper end is provided with the mummification steam outlet for discharging water vapor, this mummification steam outlet connecting fan, forms tiny structure to extract water vapor out by exhaust fan in rotary kiln.
2. a kind of mud indirectly drying device adopting shell and tube rotary kiln as claimed in claim 1, is characterized in that described drawing mechanism is also provided with drawing mechanism temperature control near the position of mummification steam outlet.
3. a kind of mud indirectly drying device adopting shell and tube rotary kiln as claimed in claim 1, is characterized in that mud indirectly drying device is also provided with steam swivel joint, is convenient to safeguard.
4. a kind of mud indirectly drying device adopting shell and tube rotary kiln as claimed in claim 1, is characterized in that the both ends of described rotating cylinder are also provided with Support bracket, for supporting rotating cylinder rotatably.
5. a kind of mud indirectly drying device adopting shell and tube rotary kiln as claimed in claim 1, is characterized in that rotating cylinder outside is also provided with transmission mechanism, rotating cylinder is rotated relative to feeding device and drawing mechanism.
6. a kind of mud indirectly drying device adopting shell and tube rotary kiln as claimed in claim 1, it is characterized in that being provided with feed-screw pump in described feeding device, and this feed-screw pump extend into certain distance in rotating cylinder, formed the sealing of mud self by this feed-screw pump extruding mud densification that operates.
7. a kind of mud indirectly drying device adopting shell and tube rotary kiln as claimed in claim 1, it is characterized in that being provided with discharging sealing screw in described drawing mechanism, and this discharging sealing screw extend into certain distance in rotating cylinder, by operating, this discharging sealing screw extruding stem mud densification forms sealing.
8. a kind of mud indirectly drying device adopting shell and tube rotary kiln as claimed in claim 1, it is characterized in that every steam circulating pipe group is provided with steam circulating pipe that is some and rotating cylinder axis being parallel, and steam circulating pipe is along the uniform setting of rotating cylinder inwall circumference, and rotate together with rotating cylinder.
9. a kind of mud indirectly drying device adopting shell and tube rotary kiln as claimed in claim 8, it is characterized in that the distance of described steam circulating pipe and rotating cylinder inwall is 100mm ~ 150mm, arbitrary neighborhood two steam cycle tube spacing is 80mm ~ 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029473.5A CN105417926B (en) | 2015-12-31 | 2015-12-31 | A kind of mud indirectly drying device using shell and tube rotary furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029473.5A CN105417926B (en) | 2015-12-31 | 2015-12-31 | A kind of mud indirectly drying device using shell and tube rotary furnace |
Publications (2)
| Publication Number | Publication Date |
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| CN105417926A true CN105417926A (en) | 2016-03-23 |
| CN105417926B CN105417926B (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511029473.5A Expired - Fee Related CN105417926B (en) | 2015-12-31 | 2015-12-31 | A kind of mud indirectly drying device using shell and tube rotary furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117241A (en) * | 2018-02-02 | 2018-06-05 | 厦门大学 | A kind of mud drying device |
| CN110406913A (en) * | 2019-08-27 | 2019-11-05 | 湖北天宜机械股份有限公司 | A kind of conveying of semicoke and drying equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006341168A (en) * | 2005-06-08 | 2006-12-21 | Shinzo Ishikawa | Surplus activated sludge reduction method |
| CN202643515U (en) * | 2012-06-15 | 2013-01-02 | 江苏金山环保科技股份有限公司 | Sludge indirect drying and incinerating subsystem |
| CN202968346U (en) * | 2012-12-19 | 2013-06-05 | 成都源创环保工程有限公司 | Conducting tube type sludge drying machine |
| JP5317283B2 (en) * | 2009-09-29 | 2013-10-16 | 第一高周波工業株式会社 | Treatment method of organic sludge |
-
2015
- 2015-12-31 CN CN201511029473.5A patent/CN105417926B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006341168A (en) * | 2005-06-08 | 2006-12-21 | Shinzo Ishikawa | Surplus activated sludge reduction method |
| JP5317283B2 (en) * | 2009-09-29 | 2013-10-16 | 第一高周波工業株式会社 | Treatment method of organic sludge |
| CN202643515U (en) * | 2012-06-15 | 2013-01-02 | 江苏金山环保科技股份有限公司 | Sludge indirect drying and incinerating subsystem |
| CN202968346U (en) * | 2012-12-19 | 2013-06-05 | 成都源创环保工程有限公司 | Conducting tube type sludge drying machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117241A (en) * | 2018-02-02 | 2018-06-05 | 厦门大学 | A kind of mud drying device |
| CN110406913A (en) * | 2019-08-27 | 2019-11-05 | 湖北天宜机械股份有限公司 | A kind of conveying of semicoke and drying equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105417926B (en) | 2016-11-30 |
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Granted publication date: 20161130 Termination date: 20201231 |