CN216918988U - Serial-type high low temperature sludge drying device - Google Patents
Serial-type high low temperature sludge drying device Download PDFInfo
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- CN216918988U CN216918988U CN202123438747.XU CN202123438747U CN216918988U CN 216918988 U CN216918988 U CN 216918988U CN 202123438747 U CN202123438747 U CN 202123438747U CN 216918988 U CN216918988 U CN 216918988U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The utility model discloses a tandem type high-low temperature sludge drying device in the field of sludge treatment, which comprises a high-temperature sludge drying machine and a low-temperature sludge drying machine, wherein the discharge end of the high-temperature sludge drying machine is communicated with the feed end of the low-temperature sludge drying machine, the high-temperature sludge drying machine is communicated with a high-temperature steam pipeline and a high-temperature condensation water pipeline, the high-temperature condensation water pipeline is connected with a first heat exchange mechanism, the first heat exchange mechanism is connected with a hot dry air pipeline, and the hot dry air pipeline is communicated with the low-temperature sludge drying machine. The utility model can solve the problems that in the prior art, a large amount of cooling water is needed for cooling high-temperature steam, the energy waste is large, and the cost of sludge drying is high.
Description
Technical Field
The utility model relates to the field of sludge treatment, in particular to a serial high-low temperature sludge drying device.
Background
Sludge drying is a process of removing most of water content from sludge through the action of evaporation and the like, and generally refers to the adoption of self-evaporation facilities such as a sludge drying bed (bed). At present, the sludge drying is mainly carried out by adopting steam in the market, and the defects of the sludge drying method are as follows: high-temperature high-pressure steam condensate water that the mummification produced needs to cool off with a large amount of cooling water resources, has wasted the heat of high-temperature high-pressure steam condensate water on the one hand, and on the other hand has also wasted the cooling water resource, causes the sludge drying running cost high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a serial high-low temperature sludge drying device to solve the problems that in the prior art, a large amount of cooling water is needed for cooling high-temperature steam, the energy waste is large, and the cost for sludge drying is high.
In order to achieve the purpose, the basic technical scheme of the utility model is as follows: the utility model provides a serial-type high low temperature sludge drying device, includes high temperature sludge drying machine and low temperature sludge drying machine, the discharge end of high temperature sludge drying machine and the feed end intercommunication of low temperature sludge drying machine, and high temperature sludge drying machine intercommunication has high-temperature steam pipeline and high temperature condensate water pipeline, and first heat exchange mechanism is connected to high temperature condensate water pipeline, and first heat exchange mechanism connects hot dry air pipeline, hot dry air pipeline and low temperature sludge drying machine intercommunication.
The principle and the advantages of the scheme are as follows: when the high-temperature sludge drying machine is in practical use, high-temperature steam is sent into the high-temperature sludge drying machine through the high-temperature steam pipeline, wet sludge is heated and dried by the high-temperature steam in the high-temperature sludge drying machine, semi-dry sludge subjected to preliminary drying is sent into the low-temperature sludge drying machine, high-temperature condensate water generated in the high-temperature sludge drying machine is discharged from the high-temperature condensate water pipeline, the high-temperature condensate water pipeline exchanges heat with air in the first heat exchange mechanism, the heated air enters the low-temperature sludge drying machine through the hot dry air pipeline to be dried again for the semi-dry sludge, the waste heat of the high-temperature steam is fully utilized to thoroughly dry the wet sludge, the cooling water consumption for cooling the high-temperature condensate water is reduced, the waste of heat and cooling water is reduced, and the cost of sludge drying is effectively reduced.
Further, the bottom of the low-temperature sludge drying machine is provided with a discharge port and an air inlet, a hot dry air pipeline is communicated with the air inlet, the top of the low-temperature sludge drying machine is provided with an air outlet, the air outlet is connected with a wet hot air pipe, the wet hot air pipe is connected with a heat regenerator, the heat regenerator is connected with a cooler, and the heat regenerator is further connected with a first heat exchange mechanism. Preferably, the hot dry air heated by the heat of the high-temperature condensed water is used for drying the semi-dry sludge in the low-temperature sludge drying machine, the generated wet hot air is recycled in a centralized manner, a wet hot air channel and a dry cold air channel are arranged in the heat regenerator, the wet hot air enters the cooler through the wet hot air channel, the moisture is condensed and separated by cooling through the cooler to obtain dry cold air, the dry cold air is returned to the dry cold air channel in the heat regenerator, and the dry cold air in the heat regenerator enters the first heat exchange mechanism through the dry cold air channel. In the heat regenerator, the dry cold air and the wet hot air exchange heat to complete the precooling of the wet hot air and the preheating of the dry cold air, and the heat of the wet hot air is fully utilized. And then the first heat exchange mechanism is used for carrying out heat exchange heating on the preheated dry and cold air, the heat of the high-temperature condensed water is fully utilized, and the heated dry and hot air is circularly used for the low-temperature sludge drier, so that the waste heat in the residual air is fully utilized after moisture separation is carried out on the damp and hot air discharged from the low-temperature sludge drier, the heat energy loss is smaller in the process of carrying out heat exchange by the first heat exchange mechanism, and the heat in the system is fully utilized.
Furthermore, the cooler is connected with a cooling tower through a circulating pipeline, and the circulating pipeline is connected with a cooling water circulating pump. Preferably, the cooling water in the cooler is recycled, and is mainly used for condensing moisture in the hot humid air, but not for completely cooling the hot humid air, so that the waste of the cooling water is reduced by recycling, and the loss of heat is reduced.
Further, a circulating fan is arranged on the hot dry air pipeline. As the optimal selection, hot dry air can be ensured to efficiently and quickly enter the low-temperature sludge drier through the circulating fan, the heat loss in the conveying process is reduced, and the drying efficiency of the semi-dry sludge is ensured.
Further, the first heat exchange mechanism is a heater which is communicated with a hot water discharge pipe, and a hot water circulating pump is connected to the high-temperature condensate pipeline. As an optimal hot water circulating pump, the efficient flowing of high-temperature condensed water in the system is guaranteed, the heater is used for transferring the heat of the high-temperature condensed water to air in the heat regenerator to complete the generation of hot dry air, and the hot water discharge pipe is convenient for transferring and discharging hot water after heat exchange.
Furthermore, the feed end of the low-temperature sludge drying machine is positioned at the top, the feed end is provided with a granulator, and the low-temperature sludge drying machine is internally provided with a conveyor belt. Preferably, the semi-dry sludge enters the low-temperature sludge drying machine and then is crushed into particles, the particles are paved and conveyed on the conveyor belt, the contact surface area is larger, the particles are in contact with hot dry air, the hot dry air from bottom to top can more fully take away the moisture in the semi-dry sludge, and the efficient drying treatment is more facilitated.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the system comprises a high-temperature sludge drier 1, a low-temperature sludge drier 2, a high-temperature condensate water pipeline 3, a hot water circulating pump 4, a heater 5, a circulating fan 6, a hot dry air pipeline 7, an air inlet 8, a wet hot air pipeline 9, a heat regenerator 10, a cooler 11, a circulating pipeline 13, a cooling water circulating pump 14, a cooling tower 15 and a hot water discharge pipe 16.
The embodiment is basically as shown in the attached figure 1: the utility model provides a serial-type high low temperature sludge drying device, includes high temperature sludge drying machine 1 and low temperature sludge drying machine 2, the pipeline intercommunication is used with the feed end of low temperature sludge drying machine 2 to the discharge end of high temperature sludge drying machine 1, and high temperature sludge drying machine 1 intercommunication has high temperature steam pipeline and high temperature condensate water pipeline 3, is connected with hot water circulating pump 4 on the high temperature condensate water pipeline 3, and high temperature condensate water pipeline 3 connects heater 5, and heater 5 intercommunication has hot water delivery pipe 16. The feeding end of the low-temperature sludge drier 2 is positioned at the top, the feeding end is provided with a granulator, and a conveyor belt is arranged in the low-temperature sludge drier 2. The bottom of the low-temperature sludge drying machine 2 is provided with a discharge port and an air inlet 8, the air inlet 8 is communicated with a hot dry air pipeline 7, the top of the low-temperature sludge drying machine 2 is provided with an exhaust port, the exhaust port is connected with a wet hot air pipeline 9, the wet hot air pipeline 9 is sequentially connected with a heat regenerator 10 in series, the heat regenerator 10 is connected with a cooler 11, the cooler 11 is connected with a cooling tower 15 through a circulating pipeline 13, and the circulating pipeline 13 is connected with a cooling water circulating pump 14. The heater 5 is connected with the heat regenerator 10 and the hot dry air pipeline 7, and the circulating fan 6 is arranged on the hot dry air pipeline 7.
The specific implementation process is as follows: wet sludge enters the high-temperature sludge drier 1 firstly, high-temperature steam is conveyed into the high-temperature sludge drier 1 through the high-temperature steam pipeline to carry out primary drying on the wet sludge in the high-temperature sludge drier 1, 60% of drying treatment can be carried out on the moisture in the wet sludge, and semi-dry sludge after the primary drying treatment in the high-temperature sludge drier 1 enters the low-temperature sludge drier 2. High-temperature condensate water formed by condensing high-temperature steam in the high-temperature sludge drier 1 is led out through a high-temperature condensate water pipeline 3, the high-temperature condensate water is conveyed to a heater 5 by a hot water circulating pump 4, and the heater 5 heats air to form hot dry air which is then conveyed into the low-temperature sludge drier 2 by a circulating fan 6. The half-dry sludge enters a low-temperature sludge drier 2, is smashed into relatively uniform particles by a granulator, and then is spread on a conveyor belt for conveying. And hot dry air enters from the bottom of the low-temperature sludge drier 2, flows from bottom to top to dry sludge particles on the conveyor belt, wraps and clamps 40% of moisture contained in the sludge particles, and then discharges the sludge particles in a damp and hot air state. The wet and hot air is conveyed to the heat regenerator 10 through a wet and hot air pipe 9, a wet and hot air channel and a dry and cold air channel are arranged in the heat regenerator 10, the wet and hot air enters the cooler 11 through the wet and hot air channel, and the cooler 11 performs heat exchange on the wet and hot air in the heat regenerator 10, so that the moisture is condensed and separated and then is discharged. The cooler 11 is kept efficiently cooled by the cooling water circulation pump 14, and the cooling water is recycled. The dry and cold air enters a dry and cold air channel of the heat regenerator 10 in the heat regenerator 10, and the dry and cold air exchanges heat with the damp and hot air to pre-cool the damp and hot air and preheat the dry and cold air, so that the heat of the damp and hot air is fully utilized. The preheated dry and cold air in the heater 5 exchanges heat with the high-temperature condensed water to be heated into hot dry air for convenient operation of the low-temperature sludge drier 2. Thus, the high-temperature sludge drier 1 and the low-temperature sludge drier 2 are connected in series, the heat contained in the high-temperature condensate water in the high-temperature sludge drier 1 is fully utilized, the heat of the high-temperature condensate water and the heat of the damp and hot air are fully utilized by adopting circulating cooling water and air, and the waste of the cooling water and the loss of the heat are reduced.
The foregoing is merely an example of the present invention and common general knowledge in the art of specific structures and/or features of the utility model has not been set forth herein in any way. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. The utility model provides a serial-type high low temperature sludge drying device which characterized in that: the high-temperature sludge drying machine comprises a high-temperature sludge drying machine and a low-temperature sludge drying machine, wherein the discharge end of the high-temperature sludge drying machine is communicated with the feed end of the low-temperature sludge drying machine, the high-temperature sludge drying machine is communicated with a high-temperature steam pipeline and a high-temperature condensation water pipeline, the high-temperature condensation water pipeline is connected with a first heat exchange mechanism, the first heat exchange mechanism is connected with a hot dry air pipeline, and the hot dry air pipeline is communicated with the low-temperature sludge drying machine.
2. The serial high-low temperature sludge drying device of claim 1, wherein: the low temperature sludge drying machine bottom is equipped with discharge gate and air inlet, hot dry air pipeline and air inlet intercommunication, the top of low temperature sludge drying machine are equipped with the gas vent, and the gas vent is connected with damp and hot air pipe, and damp and hot air pipe is connected with the regenerator, and the regenerator is connected with the cooler, the regenerator still with first heat exchange mechanism connects.
3. The serial high-low temperature sludge drying device of claim 2, wherein: the cooler is connected with a cooling tower through a circulating pipeline, and the circulating pipeline is connected with a cooling water circulating pump.
4. The serial high-low temperature sludge drying device of claim 3, wherein: and a circulating fan is arranged on the hot dry air pipeline.
5. The serial high-low temperature sludge drying device of claim 4, wherein: the first heat exchange mechanism is a heater which is communicated with a hot water discharge pipe, and a hot water circulating pump is connected to the high-temperature condensed water pipeline.
6. The serial high-low temperature sludge drying device of claim 5, wherein: the feeding end of the low-temperature sludge drying machine is positioned at the top, the feeding end is provided with a granulator, and a conveying belt is arranged in the low-temperature sludge drying machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123438747.XU CN216918988U (en) | 2021-12-31 | 2021-12-31 | Serial-type high low temperature sludge drying device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123438747.XU CN216918988U (en) | 2021-12-31 | 2021-12-31 | Serial-type high low temperature sludge drying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231799A (en) * | 2022-07-20 | 2022-10-25 | 嘉戎技术(北京)有限公司 | Sludge drying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231799A (en) * | 2022-07-20 | 2022-10-25 | 嘉戎技术(北京)有限公司 | Sludge drying device |
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