CN209989240U - Sludge drying system - Google Patents
Sludge drying system Download PDFInfo
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- CN209989240U CN209989240U CN201920485144.9U CN201920485144U CN209989240U CN 209989240 U CN209989240 U CN 209989240U CN 201920485144 U CN201920485144 U CN 201920485144U CN 209989240 U CN209989240 U CN 209989240U
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Abstract
The utility model provides a sludge drying system, sludge drying system includes for circulation drying system: the system comprises a dry and cold air heating device, a sludge rotary drying device, a spiral discharging device, a cyclone dust removal device, a dehumidification device and a condensation water receiving device; wherein a sludge rotary drying device is arranged at the downstream of the dry and cold air heating device; a spiral discharging device and a cyclone dust removal device are respectively arranged at the downstream of the sludge rotary drying device; a condensation water-receiving device is arranged at the downstream of the cyclone dust removal device; the condensation water-receiving device is connected with the dry and cold air heating device; the dehumidifying device is arranged between the sludge rotary drying device and the dry and cold air heating device. In the sludge drying system disclosed by the utility model, the heat medium is not directly contacted with the sludge, and the heat medium and the dry sludge are not required to be separated after being treated for multiple times, so that the operation and management processes are simplified; meanwhile, the hot waste gas separated from the sludge is partially converted into the heat medium, so that the overall utilization rate of the heat medium is increased, the energy is saved, and the drying process of the sludge is accelerated.
Description
Technical Field
The utility model relates to a sludge treatment equipment technical field among the chemical production particularly, relates to a sludge drying system.
Background
With the development of socioeconomic and increase of urban population in China, environmental pollution is increasingly serious, the awareness of people on protecting and improving the living environment is continuously strengthened, and the wastewater treatment capacity is increased day by day. According to relevant prediction, the sewage treatment capacity of China will be greatly increased in the future, and a large amount of sludge generated in the wastewater treatment process will become another pollution problem.
The sludge is dried and then enters a boiler to be incinerated for power generation, and the sludge is dried and granulated to be processed into compound organic matters and the like. Greatly improves the social and economic values of the sludge, and is an effective way and a development direction for sludge treatment.
The existing sludge drying technologies can be divided into two categories: direct drying and indirect drying. The heat transfer efficiency and evaporation rate of the direct drying technology are higher, and the solid content of the sludge can be improved from 25% to 85% -95%. However, since the sludge is directly contacted with the heat medium, the heat medium and the dry sludge need to be treated and separated for a plurality of times, which brings certain troubles to the operation and management. In the indirect drying technology, the heat medium (hot oil, hot water, etc.) does not directly contact with the sludge, but transfers heat to wet sludge through the heat exchanger, so that moisture in the sludge is evaporated, the subsequent process of separating the heat medium from dry sludge is omitted, but the overall utilization rate of the heat medium is low.
Therefore, how to increase the overall utilization rate of the heat medium and save energy when the heat medium is not in direct contact with the sludge is a problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a new sludge drying system based on at least one of the technical problems, in the sludge drying system disclosed by the utility model, the heat medium is not directly contacted with the sludge, and the heat medium and the dry sludge are not required to be separated after being processed for a plurality of times, thereby simplifying the operation and management flow; meanwhile, the hot waste gas separated from the sludge is partially converted into the heat medium, so that the overall utilization rate of the heat medium is increased, the energy is saved, and the drying process of the sludge is accelerated.
In view of this, the utility model provides a novel sludge drying system, include: the system comprises a dry and cold air heating device, a sludge rotary drying device, a spiral discharging device, a cyclone dust removal device, a dehumidification device and a condensation water receiving device; wherein a sludge rotary drying device is arranged at the downstream of the dry and cold air heating device; a spiral discharging device and a cyclone dust removal device are respectively arranged at the downstream of the sludge rotary drying device; a condensation water-receiving device is arranged at the downstream of the cyclone dust removal device; the condensation water-receiving device is connected with the dry and cold air heating device; the dehumidifying device is arranged between the sludge rotary drying device and the dry and cold air heating device.
The dry and cold air heating device comprises a double-channel heat exchanger and a fan. Outdoor dry cold air or circulating cold air is sent into an air channel of the double-channel heat exchanger through the fan, industrial waste hot water enters the other channel of the double-channel heat exchanger through the fan, the industrial waste hot water is cooled and then discharged for other use, and the dry cold air is heated to become dry hot air and then sent into the sludge rotary drying device.
The condensation water-collecting device comprises a double-channel condenser, a refrigerant conveying system and a water drainage system. Air after dust removal of the cyclone dust removal device enters an air channel of the double-channel condenser, a cold medium enters the other channel of the condenser through the conveying device to cool the air, moisture is separated out from the air in the cooling process, and the separated water enters the water separation and drainage system and then is conveyed to a water pool outside the system through a pipeline to be reused.
In the technical scheme, the sludge drying system is adopted to dry the sludge, the sludge dewatering efficiency is high, the process structure is simple, the operation is convenient, and the investment and operation cost is low; but also avoids the secondary pollution caused by the emission of odor, dust and the like, and has higher social and economic benefits.
Further, the sludge rotary drying device comprises a sludge drying box body, a sludge rotary inner cylinder and a central heater; wherein the sludge rotary inner cylinder is fixed on the sludge drying box body through a rotary device; the central heater is fixed on the sludge drying box body and sleeved in the sludge rotary inner cylinder; one end of the dehumidifying device is connected with the sludge rotary inner cylinder, and the other end of the dehumidifying device is connected with the dry and cold air heating device.
Preferably, a drainage pipe is arranged in the central heater, and condensed liquid generated in the drainage pipe is discharged out of the sludge rotary drying device.
The dehumidification device pumps damp and hot air in the sludge rotary inner cylinder out of the sludge rotary inner cylinder through a damp and hot air outlet on the sludge drying box body, so that on one hand, the damp and hot air in the sludge rotary inner cylinder is prevented from being condensed to form water drops, and further the water drops are dropped on the dried sludge; on the other hand, the extracted damp and hot air enters the dry and cold air heating device, and enters the central heater together with the dry and hot air to heat the sludge in the sludge rotary inner cylinder.
In the technical scheme, the sludge drying box body is a closed box body and is provided with a dry hot air outlet, a dry hot air inlet, a drainage pipe orifice, a sludge outlet, a sludge inlet and a damp hot air outlet; wherein, the dry hot air in the dry cold air heating device is introduced into a central heater in the sludge rotary inner cylinder through a dry hot air inlet on the sludge drying box body to fully heat the sludge in the sludge rotary inner cylinder; wherein, the dry hot air in the central heater and the wet hot air pumped out from the sludge rotary inner cylinder enter the cyclone dust removal device through the dry hot air outlet; and simultaneously, condensed water generated by heating the sludge is discharged out of the sludge rotary drying device through the drainage tube. And the dried sludge is connected with the inlet of the spiral discharging device through a sludge outlet to discharge the dried sludge.
Wherein the rotating device is fixed on the sludge drying box body through a bracket; and the central heater is also fixed on the sludge drying box body through a bracket.
The utility model discloses in, in the hot-air lets in central heater, heat the mud and the air of mud gyration inner tube to keep the internal temperature of barrel, mud gyration inner tube rotates in succession inside the sludge drying box, after mud gets into mud gyration inner tube, under the rotation of mud gyration inner tube, mud can fully contact with the hot-air in the central heater, thereby reach dry purpose.
Further, the sludge drying system also comprises a feeding device; the feeding device is connected with the sludge rotary inner cylinder through the feeding hole.
The feeding device comprises a stirring crushing hopper and a spiral conveying device. After the sludge enters the stirring and crushing hopper, a stirrer in the stirring and crushing hopper stirs the sludge at a high speed to crush the sludge, and the crushed sludge enters the sludge rotary inner cylinder through the spiral conveying device, wherein the sludge after stirring and crushing can be better dried in the sludge rotary inner cylinder.
The utility model discloses in, can utilize damp and hot air in the mud gyration inner tube, heat the mud of mud gyration inner tube, practiced thrift heat energy to a certain extent, be favorable to the drying of mud.
Further, the central heater is a heat exchange tube; one end of the heat exchange tube is connected with the dry and cold air heating device, and the other end of the heat exchange tube is connected with the cyclone dust removal device.
Furthermore, the cyclone dust removal device is a cyclone dust collector.
Air exhausted from the sludge drying box is dedusted by a cyclone separation deduster, fine sludge in the air is sieved out, and the fine sludge enters a feeding device; and other air enters the condensation water-collecting device.
Through the technical scheme, the utility model provides a novel sludge drying system, in the sludge drying system, the heat medium is not directly contacted with the sludge, and the heat medium and the dry sludge are not required to be separated after being treated for a plurality of times, so that the operation and management flow is simplified; meanwhile, the hot waste gas separated from the sludge is partially converted into the heat medium, so that the overall utilization rate of the heat medium is increased, the energy is saved, and the drying process of the sludge is accelerated.
Drawings
FIG. 1 is a schematic view showing the structure of a sludge drying system according to the present invention;
wherein, 1 is a dry and cold air heating device, 2 is a sludge rotary drying device, 3 is a spiral discharging device, 4 is a cyclone dust removing device, 5 is a dehumidifying device, 6 is a condensation water-collecting device, and 7 is a feeding device.
FIG. 2 is a schematic structural view of a rotary sludge drying device according to the present invention;
in the figure, 8 is a sludge drying box body, 9 is a sludge rotary inner cylinder, 10 is a central heater, 11 is a sludge inlet, 12 is a sludge outlet, 13 is a dry hot air inlet, 14 is a drainage pipe orifice, 15 is a wet hot air outlet, and 16 is a dry hot air outlet.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The utility model provides a novel sludge drying system, in the sludge drying system, a heat medium is not directly contacted with sludge, and the heat medium and dry sludge are not required to be separated after being processed for a plurality of times, thereby simplifying the operation and management flow; meanwhile, the hot waste gas separated from the sludge is partially converted into the heat medium, so that the overall utilization rate of the heat medium is increased, the energy is saved, and the drying process of the sludge is accelerated. The specific structure is shown in fig. 1-2.
As shown in fig. 1-2, the utility model provides a new sludge drying system, which comprises: the system comprises a dry and cold air heating device 1, a sludge rotary drying device 2, a spiral discharging device 3, a cyclone dust removing device 4, a dehumidifying device 5 and a condensation water-receiving device 6; wherein, a sludge rotary drying device 2 is arranged at the downstream of the dry and cold air heating device 1; a spiral discharging device 3 and a cyclone dust removal device 4 are respectively arranged at the downstream of the sludge rotary drying device 2; a condensation water-receiving device 6 is arranged at the downstream of the cyclone dust-removing device 4; the condensation water-receiving device 6 is connected with the dry and cold air heating device 1; the dehumidifying device 5 is arranged between the sludge rotary drying device 2 and the dry and cold air heating device 1.
The dry and cold air heating device 1 comprises a double-channel heat exchanger and a fan, outdoor dry and cold air or circulating cold air passes through the fan and is sent into an air channel of the double-channel heat exchanger, industrial waste hot water enters the other channel of the double-channel heat exchanger through the fan, the industrial waste hot water is cooled and then discharged for other use, and the dry and cold air is heated and then changed into dry and hot air and sent into the sludge rotary drying device 2.
The condensation water-collecting device 6 comprises a double-channel condenser, a refrigerant conveying system and a water drainage system. The wet and hot air after dust removal by the cyclone dust removal device 4 enters an air channel of the double-channel condenser, the cold medium enters the other channel of the condenser through the conveying device to cool the wet and hot air, moisture is separated out from the wet and hot air in the cooling process, and the separated water enters the water separation and drainage system and then is conveyed to a water pool outside the system through a pipeline for reuse.
In the technical scheme, the sludge drying system is adopted to dry the sludge, the sludge dewatering efficiency is high, the process structure is simple, the operation is convenient, and the investment and operation cost is low; but also avoids the secondary pollution caused by the emission of odor, dust and the like, and has higher social and economic benefits.
In order to further optimize the technical scheme, the rotary sludge drying device 2 comprises a sludge drying box body 8, a rotary sludge inner cylinder 9 and a central heater 10; wherein the sludge rotary inner cylinder 9 is fixed on the sludge drying box body 8 through a rotary device; the central heater 10 is fixed on the sludge drying box body 8 and sleeved in the sludge rotary inner cylinder 9; one end of the dehumidifying device 5 is connected with the sludge rotary inner cylinder 9, and the other end is connected with the dry and cold air heating device 1.
In the technical scheme, the sludge drying box body 8 is a closed box body and is provided with a dry hot air outlet 16, a dry hot air inlet 13, a drainage pipe orifice 14, a sludge outlet 12, a sludge inlet 11 and a damp hot air outlet 15; wherein, the dry hot air in the dry cold air heating device 1 is introduced into a central heater 10 in the sludge rotary inner cylinder 9 through a dry hot air inlet 13 on the sludge drying box body 8, and fully heats the sludge in the sludge rotary inner cylinder 9; wherein the hot dry air in the central heater 10 enters the cyclone dust removing device 4 through the hot dry air outlet 16; meanwhile, condensed water generated by heating sludge in the central heater 10 is discharged out of the sludge rotary drying device 2 through a drainage pipe. And the dried sludge is connected with the inlet of the spiral discharging device 3 through a sludge outlet 12 and is discharged.
Wherein the rotating device is fixed on the sludge drying box body 8 through a bracket; and the central heater 10 is also fixed on the sludge drying box 8 through a bracket.
In order to further optimize the technical scheme, the sludge drying system also comprises a feeding device 7; the feeding device 7 is connected with the sludge rotary inner cylinder 9 through a feeding hole.
The feeding device 7 comprises a stirring crushing hopper and a screw conveying device. After the sludge enters the stirring and crushing hopper, a stirrer in the stirring and crushing hopper stirs the sludge at a high speed to crush the sludge, and the crushed sludge enters the sludge rotary inner cylinder 9 through the spiral conveying device, wherein the sludge after stirring and crushing can be better dried in the sludge rotary inner cylinder 9.
In order to further optimize the technical scheme, the central heater 10 is provided as a heat exchange tube; one end of the heat exchange tube is connected with the dry and cold air heating device 1, and the other end is connected with the cyclone dust removal device 4.
In order to further optimize the technical scheme, the cyclone dust removal device 4 is provided as a cyclone dust collector.
The wet and hot air discharged from the sludge drying box passes through a cyclone dust collector to screen out sludge fine slag in the wet and hot air, the sludge fine slag enters a feeding device 7, and the air after dust removal enters a condensation water-collecting device 6.
The utility model discloses a theory of operation and application method do: outdoor dry cold air or circulating cold air is sent into an air channel of the double-channel heat exchanger through a fan in the dry cold air heating device 1, industrial waste hot water enters the other channel of the double-channel heat exchanger through the fan, the industrial waste hot water is cooled and then discharged for other use, and the dry cold air is heated to become dry hot air and then sent into the sludge rotary drying device 2. Dry hot air is introduced into a central heater 10 in the sludge rotary inner cylinder 9 through a dry hot air inlet 13 on the sludge drying box body 8; meanwhile, sludge to be dried enters a stirring crushing hopper of the feeding device 7, a stirrer in the stirring crushing hopper stirs the sludge at a high speed to crush the sludge, and the crushed sludge enters the sludge rotary inner cylinder 9 through a sludge inlet 11 on the sludge drying box body 8 through a spiral conveying device. The dehumidifying device 5 is started, the dehumidifying device 5 pumps the damp and hot air in the sludge rotary inner cylinder 9 out of the sludge rotary inner cylinder 9 through a damp and hot air outlet 15 on the sludge drying box body 8, the damp and hot air is conveyed into the dry and cold air heating device 1 to be mixed with the dry and hot air to enter the central heater 10, and the sludge in the sludge rotary inner cylinder 9 is heated and then enters the cyclone dust collector through a dry and hot air outlet 16 on the sludge drying box body 8. Wherein the condensed water generated by heating the sludge in the central heater 10 is discharged out of the sludge rotary drying device 2 through the drainage tube. The wet and hot air discharged from the sludge drying box passes through a cyclone dust collector to screen out sludge fine slag in the wet and hot air, the sludge fine slag enters a feeding device 7, and the air after dust removal enters a condensation water-collecting device 6.
The damp and hot air enters an air channel of a double-channel condenser in the condensation water-receiving device 6, the cold medium enters another channel of the condenser through the conveying device to cool the damp and hot air, the damp and hot air separates out moisture in the cooling process, and the separated water enters the water separation and drainage system and then is conveyed to a water pool outside the system through a pipeline to be reused. And the dried sludge is conveyed into the spiral discharging device 3 through a sludge outlet 12 on the sludge drying box body 8 and is discharged, so that the drying of the sludge is realized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A sludge drying system, characterized in that, the sludge drying system is a circulation drying system and includes: the system comprises a dry and cold air heating device, a sludge rotary drying device, a spiral discharging device, a cyclone dust removal device, a dehumidification device and a condensation water receiving device; wherein the sludge rotary drying device is arranged at the downstream of the dry and cold air heating device; the spiral discharging device and the cyclone dust removal device are respectively arranged at the downstream of the sludge rotary drying device; the condensation water-receiving device is arranged at the downstream of the cyclone dust removal device; the condensation water-receiving device is connected with the dry and cold air heating device; the dehumidifying device is arranged between the sludge rotary drying device and the dry and cold air heating device.
2. The sludge drying system of claim 1, wherein the sludge rotary drying device comprises a sludge drying box body, a sludge rotary inner cylinder and a central heater; the sludge rotary inner cylinder is fixed on the sludge drying box body through a rotary device; the central heater is fixed on the sludge drying box body and sleeved in the sludge rotary inner cylinder; one end of the dehumidifying device is connected with the sludge rotary inner cylinder, and the other end of the dehumidifying device is connected with the dry and cold air heating device.
3. The sludge drying system of claim 2, further comprising a feed device; the feeding device is connected with the sludge rotary inner cylinder through a feeding hole.
4. The sludge drying system as claimed in claim 2, wherein the central heater is a heat exchange tube; one end of the heat exchange tube is connected with the dry and cold air heating device, and the other end of the heat exchange tube is connected with the cyclone dust removal device.
5. The sludge drying system of claim 1 or 2, wherein the cyclone device is a cyclone separator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920485144.9U CN209989240U (en) | 2019-04-11 | 2019-04-11 | Sludge drying system |
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| CN201920485144.9U CN209989240U (en) | 2019-04-11 | 2019-04-11 | Sludge drying system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228933A (en) * | 2019-04-11 | 2019-09-13 | 华辰天诚科技有限公司 | A kind of sludge dry system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228933A (en) * | 2019-04-11 | 2019-09-13 | 华辰天诚科技有限公司 | A kind of sludge dry system |
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