CN112607998A - Drying system and sludge drying equipment - Google Patents
Drying system and sludge drying equipment Download PDFInfo
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- CN112607998A CN112607998A CN202011368740.2A CN202011368740A CN112607998A CN 112607998 A CN112607998 A CN 112607998A CN 202011368740 A CN202011368740 A CN 202011368740A CN 112607998 A CN112607998 A CN 112607998A
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- heating
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- drying
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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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
Abstract
The invention is suitable for the technical field of machinery, and provides a drying system and sludge drying equipment, wherein the drying system comprises: a first housing provided with a first air inlet and a first air outlet; the dehumidifying and drying module comprises a fan, a cooling unit and a heating unit, wherein the cooling unit is used for dehumidifying gas entering the drying system, the heating unit is used for heating the dehumidified gas, and the cooling unit comprises an evaporator; and the heating and drying module comprises a condenser, the condenser is used for exchanging heat with a heating medium so as to dry the materials through the heating medium, and a refrigerant pipeline in the evaporator is communicated with a refrigerant pipeline in the condenser. This scheme is through setting up evaporimeter and condenser to make the refrigerant pipeline in the evaporimeter and the refrigerant pipeline intercommunication in the condenser, the refrigerant can be with the heat to heating medium heating in the condenser of absorbing gas in the evaporimeter, thereby makes the heat that gas took out from the drying-machine get back to the drying-machine through heating medium again, effectively avoids the energy extravagant.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to a drying system and sludge drying equipment.
Background
The sludge is the concentration of pollutants in the process of wastewater and sewage treatment, and has the characteristics of high water content, large volume, complex shape, difficult transportation and the like. Generally, sludge is dried and then is subjected to subsequent treatment, the drying of the sludge has two methods, namely a natural evaporation method and a mechanical dehydration method, and the mechanical dehydration method has the characteristic of high sludge drying efficiency and is a commonly used sludge drying means.
The traditional vertical disc sludge dryer has the structure that a plurality of layers of metal discs are arranged inside the vertical disc sludge dryer and used for bearing sludge, a cavity capable of flowing heat medium is arranged inside each metal disc, the heat medium can be steam, heat conduction oil or hot water, a heat medium pipeline is arranged beside each metal disc, and a branch pipe leads the heat medium into the cavity of each disc. The disc is heated to dry the sludge contacting the outer surface of the disc. The inside interface that is equipped with simultaneously of unit can let in outside air, and the air carries out the drainage through outside fan, gets into the inside back of disc, absorbs the steam that comes out from the mud evaporation, and the air after absorbing moisture is outside by draught fan discharge disc, so constantly circulate, can carry into the mud of vertical disc to carry in succession and carry out drying process.
However, in the existing sludge dryer, the air brings out the water vapor evaporated from the sludge and simultaneously brings out the heat emitted by the disc, thereby causing energy waste.
Disclosure of Invention
The embodiment of the invention aims to provide a drying system and sludge drying equipment, and aims to solve the technical problem that in the existing sludge dryer, air brings out water vapor evaporated from sludge and simultaneously brings out heat dissipated by a disc, so that energy is wasted.
The embodiment of the invention is realized in such a way that the drying system comprises a first shell, and a dehumidifying and drying module and a heating and drying module which are arranged in the first shell;
the first shell is provided with a first air inlet and a first air outlet, the first air outlet is used for discharging high-temperature gas, and the first air inlet is used for allowing gas acting on the materials to be dried to enter;
the dehumidifying and drying module comprises a fan, a cooling unit and a heating unit which are sequentially arranged from a first air inlet to a first air outlet, the cooling unit is used for dehumidifying gas entering the drying system, the heating unit is used for heating the dehumidified gas, and the cooling unit comprises an evaporator;
the heating and drying module comprises a condenser, the condenser is used for exchanging heat with a heating medium so as to dry materials by transferring heat through the heating medium, a refrigerant pipeline in the evaporator is communicated with a refrigerant pipeline in the condenser, and the refrigerant releases heat absorbed in the evaporator in the condenser by flowing between the evaporator and the condenser.
Another object of the embodiments of the present invention is to provide a sludge drying apparatus, which includes a sludge dryer and the above drying system;
the sludge dryer comprises a second shell and a sludge bearing structure arranged in the second shell;
the second shell is provided with a second air inlet and a second air outlet, the second air inlet is connected with the first air outlet in the drying system, and the second air outlet is connected with the first air inlet in the drying system;
the sludge bearing structure is provided with a heating medium storage structure, the heating medium storage structure is used for heating sludge, and the heating medium storage structure is connected with a condenser in the drying system.
According to the drying system provided by the embodiment of the invention, the dehumidifying and drying module and the heating and drying module are arranged, the evaporator is arranged in the dehumidifying and drying module, the condenser is arranged in the heating and drying module, and the refrigerant pipeline in the evaporator is communicated with the refrigerant pipeline in the condenser, so that the refrigerant can exchange heat with gas in the evaporator to absorb heat, then the refrigerant absorbing heat flows in the condenser to exchange heat with a heating medium to release heat, the heated heating medium is introduced into the sludge dryer to dry sludge, and the heat brought out from the sludge dryer by the gas can return to the sludge dryer through the heating medium, thereby effectively avoiding energy waste.
Drawings
Fig. 1 is a schematic structural diagram of a drying system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a drying system with a cooling coil according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a connection circuit of an evaporator and a condenser according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a connection loop of a heat absorber and a heat radiator according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a sludge dryer according to an embodiment of the present invention;
in the drawings: 1. a first housing; 11. a first air inlet; 12. a first air outlet; 13. a gas processing chamber; 14. a water collection tank; 2. a fan; 31. a heat sink; 32. a cooling coil; 321. a cooling tower; 33. an evaporator; 41. a heat emitter; 42. a heating coil; 51. a condenser; 511. a refrigerant line; 512. a heating medium line; 52. a compressor; 53. a throttling element; 6. a controller; 7. a second housing; 71. a second air inlet; 72. a second air outlet; 73. a sludge feeding port; 74. a sludge discharge port; 75. a disc; 76. a water inlet pipe; 77. and (5) discharging a water pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1, which is a schematic structural diagram of a drying system provided in an embodiment of the present invention, the drying system includes a first housing 1, and a dehumidifying drying module and a heating drying module disposed in the first housing 1;
the first shell 1 is provided with a first air inlet 11 and a first air outlet 12, the first air outlet 12 is used for discharging high-temperature gas, and the first air inlet 11 is used for allowing gas acting on the material to be dried to enter;
the dehumidifying and drying module comprises a fan 2, a cooling unit and a heating unit which are sequentially arranged from a first air inlet 11 to a first air outlet 12, wherein the cooling unit is used for dehumidifying gas entering a drying system, the heating unit is used for heating the dehumidified gas, and the cooling unit comprises an evaporator 33;
the heating and drying module comprises a condenser 51, the condenser 51 is used for exchanging heat with a heating medium to dry materials by transferring heat through the heating medium, a refrigerant pipeline in the evaporator 33 is communicated with a refrigerant pipeline in the condenser 51, and the refrigerant releases heat absorbed in the evaporator 33 in the condenser 51 by flowing between the evaporator 33 and the condenser 51.
In the embodiment of the present invention, the specific structure of the first housing 1 is not limited, for example, the first housing 1 may have a rectangular structure, a gas processing chamber 13 is disposed in the first housing 1, the gas processing chamber 13 is a closed structure except for the first gas inlet 11 and the first gas outlet 12, high-temperature gas discharged from the first gas outlet 12 may be introduced into a device for storing the material to be dried, and the high-temperature gas may be used to dry the material to be dried, because the gas is flowing, the high-temperature gas may carry away water vapor evaporated from sludge when being discharged from the device for storing the material to be dried, and then the gas acting on the material to be dried (i.e., the gas discharged from the device for storing the material to be dried) is introduced into the gas processing chamber 13 through the first gas inlet 11. The present embodiment takes the material to be dried as sludge as an example, but is not limited thereto.
In the embodiment of the invention, the dehumidifying and drying module is arranged in the gas processing cavity 13, and the fan 2, the cooling unit and the heating unit are sequentially arranged from the first gas inlet 11 to the first gas outlet 12, so that gas acting on the material to be dried sequentially passes through the fan 2, the cooling unit and the heating unit. Wherein the fan 2 provides driving force for the circulation of gas between the drying system and the device for storing the materials to be dried; the cooling unit can cool the gas to condense the water vapor in the gas, so as to achieve the purpose of dehumidifying the gas; the heating unit can heat the gas after cooling and dehumidifying, for example, when the device for storing the materials to be dried is a sludge dryer, high-temperature gas is introduced into the sludge dryer, and not only can the water evaporated in the sludge be taken away through gas circulation, but also the drying efficiency of the sludge can be improved, and the evaporation of the water in the sludge is accelerated. The cooling unit comprises an evaporator 33, and the gas is cooled by heat exchange between the gas and a refrigerant in the evaporator 33 to realize dehumidification of the gas. Preferably, the evaporator 33 may be provided with a drain pipe, and condensed water generated by cooling water vapor in the gas may be discharged through the drain pipe for subsequent treatment. The present embodiment does not limit the specific structure of the heating unit.
In the embodiment of the invention, a device for storing materials to be dried is taken as a vertical disc sludge dryer for illustration, and the heating and drying module can flow into a disc of the sludge dryer through a heating medium to heat and dry sludge. The heating and drying module comprises a condenser 51, the heating medium can be steam, heat conduction oil or water, the embodiment takes the heating medium as water as an example, the water can exchange heat with the refrigerant in the condenser 51 to absorb heat, and then flows into the disc to heat the sludge. The refrigerant line in the evaporator 33 is communicated with the refrigerant line in the condenser 51 so that the refrigerant can exchange heat with gas in the evaporator 33 to absorb heat and then flow to the condenser 51 to exchange heat with water to release heat. As shown in fig. 3, a compressor 52 is further disposed between the evaporator 33 and the condenser 51, the compressor 52 can be used for driving the refrigerant to flow from the evaporator 33 to the condenser 51, and preferably, a throttling element 53 can be further disposed on a refrigerant line 511 between the evaporator 33 and the condenser 51, and the throttling element 53 is used for adjusting the flow rate of the refrigerant between the evaporator 33 and the condenser 51. In addition, a heating medium line 512 passes through the condenser 51, and the heating medium in the heating medium line exchanges heat with the refrigerant in the refrigerant line in the condenser.
According to the drying system provided by the embodiment of the invention, the dehumidifying and drying module and the heating and drying module are arranged, the evaporator 33 is arranged in the dehumidifying and drying module, the condenser 51 is arranged in the heating and drying module, and a refrigerant pipeline in the evaporator 33 is communicated with a refrigerant pipeline in the condenser 51, so that the refrigerant can exchange heat with gas in the evaporator 33 to absorb heat, then the refrigerant absorbing the heat flows in the condenser 51 to exchange heat with a heating medium to release heat, the heated heating medium is introduced into the sludge dryer to dry the sludge, and the heat brought out from the sludge dryer by the gas can return to the sludge dryer through the heating medium, thereby effectively avoiding energy waste.
In another embodiment of the present invention, a heating coil 42 is included in the heating unit, the heating coil 42 is connected to the condenser 51, and the condenser 51 is also used for heating the heating medium in the heating coil 42.
In the embodiment of the present invention, when the heating medium is water, the heating coil 42 is a hot water coil, and the water in the hot water coil exchanges heat with the refrigerant in the condenser 51 to absorb heat and then exchanges heat with the gas to release heat, a part of the heat absorbed from the gas by the evaporator 33 is also used to heat the dehumidified gas, so that the heat cycle is realized. In this case, a part of the heating medium corresponding to the heat exchange with the condenser 33 heats the air through the hot water coil, and a part of the heating medium enters the sludge in the disc of the sludge dryer.
According to the drying system provided by the embodiment of the invention, the heating coil 42 is arranged in the heating unit in the dehumidification drying module, and the heating coil 42 is connected with the condenser 51, so that the heating medium in the heating coil 42 can absorb heat in the refrigerant in the condenser 51 for gas heating, and the heat of the refrigerant in the condenser 51 is derived from gas, thereby realizing the circulation of partial heat and saving energy.
In another embodiment of the present invention, as shown in fig. 1 and 4, the cooling unit further includes a heat absorber 31, the heating unit includes a heat radiator 41 therein, a refrigerant line in the heat absorber 31 communicates with a refrigerant line in the heat radiator 41, and the refrigerant line releases heat absorbed in the heat absorber 31 in the heat radiator 41 by flowing between the heat absorber 31 and the heat radiator 41.
In the embodiment of the present invention, the specific configurations of the heat absorber 31 and the heat radiator 41 are not limited, and the refrigerant in the heat absorber 31 absorbs the heat of the gas to cool the gas, and the refrigerant in the heat radiator 41 exchanges heat with the gas to heat the gas, and when the refrigerant pipe line in the heat absorber 31 is communicated with the refrigerant pipe line in the heat radiator 41 and the refrigerant flows between the heat absorber 31 and the heat radiator 41, the heat absorbed by the refrigerant in the gas can be reused for heating the gas.
In the embodiment of the present invention, preferably, as shown in fig. 2, the cooling unit may further include a cooling coil 32, the cooling coil 32 is communicated with the cooling tower 321, and the cooling unit heat absorber 31, the cooling coil 32 and the evaporator 33 may be preferably arranged in sequence along the gas flow direction. To facilitate the collection of the condensed water and the subsequent treatment of the condensed water, a water collection sump 14 may be provided below the cooling unit.
According to the drying system provided by the embodiment of the invention, the heat absorber 31, the cooling coil 32 and the evaporator 33 are arranged in the cooling unit, the gas is cooled in multiple layers, so that water vapor in the gas can be fully condensed, the condensation effect is improved, meanwhile, the heat radiator 41 is arranged in the heating unit, so that the refrigerant pipelines of the heat absorber 31 and the heat radiator 41 are communicated, the heat absorbed by the refrigerant in the gas can be used for heating the gas, the heat can be fully utilized, and the energy is saved.
In another embodiment of the present invention, the drying system further comprises a controller 6, the controller 6 is connected to a temperature sensor, the temperature sensor is disposed on the air inlet side of the cooling coil 32, the temperature sensor is used for measuring the return air temperature, and the controller 6 is used for controlling the medium flow in the cooling coil 32 according to the return air temperature.
In the embodiment of the present invention, the type of the controller 6 and the arrangement of the temperature sensor (not shown in the figure) on the air inlet side of the cooling coil 32 are not limited, and the temperature of the air entering the drying system from the sludge dryer will also change due to the change of the sludge drying load, so as to ensure the stable operation of the evaporator 33 and the condenser 51, the temperature of the air entering the evaporator 33 needs to be controlled, so that the temperature of the air at the air inlet side of the cooling coil 32 can be identified, the flow rate of the water entering the cooling coil 32 from the cooling tower 321 can be adjusted according to the temperature of the air passing through the cooling coil 32, a throttle valve (not shown in the figure) can be arranged on a pipeline connecting the cooling coil 32 and the cooling tower 321, the throttle valve is connected with the controller 6, the controller 6 can compare the data sent by the temperature sensor with a preset value, then determine the corresponding flow rate value of the water, the throttle valve regulates the flow of water to the cooling coil 32 in accordance with the control command.
According to the drying system provided by the embodiment of the invention, the controller 6 is arranged in the drying system, and the controller 6 is connected with the temperature sensor at the air inlet side of the cooling coil 32, so that the controller 6 can control the water flow of the cooling coil according to the temperature at the air inlet side of the cooling coil 32, the gas temperature passing through the evaporator 33 can be controlled, and the evaporator 33 and the condenser 51 are ensured to be operated under a stable working condition.
In the drying system provided by the above embodiment of the present invention, when in operation, the air acting on the material to be dried enters the first casing 1 through the first air inlet 11, and then passes through the cooling unit and the heating unit in sequence and is discharged from the first air outlet 12, and meanwhile, the heating and drying module transfers heat to dry the material through the heating medium. Wherein the evaporator 33 in the cooling unit is connected with the condenser 51 in the heating and drying module, and the refrigerant in the evaporator 33 releases heat absorbed by exchanging heat with the gas in the condenser 51 for heating the heating medium. When the cooling unit is further provided with a heat absorber 31, the heating unit is further provided with a heat radiator 41 and a heating coil 42, wherein the heat absorber 31 is connected with the heat radiator 41, the heating coil 42 is connected with a condenser 51, refrigerant in the heat absorber 31 absorbs heat in gas and then exchanges heat with the gas in the heat radiator 41 to release the heat, and meanwhile, a part of heating medium exchanging heat with the refrigerant in the condenser 51 enters the sludge dryer to dry sludge, and the other part of heating medium enters the heating coil 42 to exchange heat with the gas to heat gas.
In another embodiment of the present invention, as shown in fig. 5, there is provided a sludge drying apparatus including a sludge dryer and a drying system as described above;
the sludge dryer comprises a second shell 7 and a sludge bearing structure arranged in the second shell 7;
a second air inlet 71 and a second air outlet 72 are arranged on the second shell 7, the second air inlet 71 is connected with a first air outlet 12 in the drying system, and the second air outlet 12 is connected with a first air inlet 11 in the drying system;
the sludge bearing structure is provided with a heating medium storage structure, the heating medium storage structure is used for heating sludge, and the heating medium storage structure is connected with a condenser 51 in the drying system.
In the embodiment of the present invention, the specific structure of the sludge dryer and the specific connection manner between the second air inlet 71 and the first air outlet 12 and between the second air outlet 72 and the first air inlet 11 are not limited, for example, the connection therebetween may be through an air pipe, and the connection between the two ends of the air pipe and the second air inlet 71 and the first air outlet 11 may be through a threaded connection, but is not limited thereto. Of course, the second housing 7 is further provided with a sludge inlet 73 and a sludge outlet 74, the sludge inlet 73 may be disposed at the upper end of the second housing 7, and the sludge outlet 74 may be disposed at the bottom end of the second housing 7.
In the embodiment of the present invention, the sludge bearing structure may be a multi-layer disc 75 disposed in the second housing 7, and the medium storage structure disposed on the disc 75 may be a cavity disposed inside the disc 75, but is not limited thereto, the cavity inside the disc 75 is connected to the water inlet pipe 76 and the water outlet pipe 77, and the water inlet pipe 76 and the water outlet pipe 77 are connected to both ends of the condenser 51. The water flows in the condenser 51 in heat exchange relationship with the refrigerant through the inlet pipe 76 to the cavity inside the disc 75 in heat exchange relationship with the sludge on the disc 75 and then flows through the outlet pipe 77 into the condenser 51.
According to the sludge drying device provided by the embodiment of the invention, by arranging the drying system, the sludge can be dried by dehumidification drying and heating drying at the same time, the sludge drying efficiency is improved, and the drying system can heat the heating medium in the heating and drying module by using the heat absorbed from the gas and heat the sludge in the sludge dryer, so that the heat is fully utilized, and the energy is saved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The drying system is characterized by comprising a first shell, a dehumidifying drying module and a heating drying module, wherein the dehumidifying drying module and the heating drying module are arranged in the first shell;
the first shell is provided with a first air inlet and a first air outlet, the first air outlet is used for discharging high-temperature gas, and the first air inlet is used for allowing gas acting on the materials to be dried to enter;
the dehumidifying and drying module comprises a fan, a cooling unit and a heating unit which are sequentially arranged from a first air inlet to a first air outlet, the cooling unit is used for dehumidifying gas entering the drying system, the heating unit is used for heating the dehumidified gas, and the cooling unit comprises an evaporator;
the heating and drying module comprises a condenser, the condenser is used for exchanging heat with a heating medium to dry materials through heat transfer of the heating medium, a refrigerant pipeline in the evaporator is communicated with a refrigerant pipeline in the condenser, and the refrigerant releases heat absorbed in the evaporator in the condenser through flowing between the evaporator and the condenser.
2. A drying system according to claim 1, wherein said cooling unit further includes a heat absorber therein, said heating unit includes a heat radiator therein, and a refrigerant line in said heat absorber communicates with a refrigerant line in said heat radiator, and the refrigerant line releases heat absorbed in said heat absorber in said heat radiator by flowing between said heat absorber and said heat radiator.
3. The drying system of claim 2, wherein the cooling unit further comprises a cooling coil, the cooling coil being in communication with a cooling tower.
4. A drying system according to claim 3, wherein the heat absorber, the cooling coil and the evaporator are arranged in sequence along the air flow direction.
5. The drying system of claim 3, further comprising a controller, wherein the controller is connected to a temperature sensor, the temperature sensor is disposed on an air inlet side of the cooling coil, the temperature sensor is configured to measure a return air temperature, and the controller is configured to control the flow of the medium in the cooling coil according to the return air temperature.
6. A drying system according to claim 1, wherein the heating unit comprises a heating coil, the heating coil is connected to the condenser, and the condenser is further used for heating the heating medium in the heating coil.
7. The drying system of claim 1, wherein said evaporator further comprises a drain for draining condensed water generated by the air passing through said evaporator.
8. A drying system according to claim 1, wherein a compressor is further provided between the evaporator and the condenser, the compressor being adapted to drive refrigerant from the evaporator to the condenser;
and a throttling element is further arranged on a refrigerant pipeline between the evaporator and the condenser and used for adjusting the flow of the refrigerant between the evaporator and the condenser.
9. A sludge drying apparatus, characterized in that the sludge drying apparatus comprises a sludge dryer and a drying system according to any one of claims 1 to 8;
the sludge dryer comprises a second shell and a sludge bearing structure arranged in the second shell;
the second shell is provided with a second air inlet and a second air outlet, the second air inlet is connected with the first air outlet in the drying system, and the second air outlet is connected with the first air inlet in the drying system;
the sludge bearing structure is provided with a heating medium storage structure, the heating medium storage structure is used for heating sludge, and the heating medium storage structure is connected with a condenser in the drying system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011368740.2A CN112607998A (en) | 2020-11-30 | 2020-11-30 | Drying system and sludge drying equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011368740.2A CN112607998A (en) | 2020-11-30 | 2020-11-30 | Drying system and sludge drying equipment |
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| CN112607998A true CN112607998A (en) | 2021-04-06 |
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| CN202011368740.2A Pending CN112607998A (en) | 2020-11-30 | 2020-11-30 | Drying system and sludge drying equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045275A (en) * | 2016-07-21 | 2016-10-26 | 黄志荣 | Sludge drying system |
| CN208454788U (en) * | 2018-04-27 | 2019-02-01 | 深圳市万信达生态环境股份有限公司 | A kind of low temperature drying equipment handling sludge |
| CN110360833A (en) * | 2019-07-31 | 2019-10-22 | 苏州海派特热能设备有限公司 | A kind of varying duty dehumidifying heat pump drying system |
| CN110487058A (en) * | 2019-08-30 | 2019-11-22 | 圣春新能源科技有限公司 | A kind of sludge heat pump drying system |
| CN213865892U (en) * | 2020-11-30 | 2021-08-03 | 广东申菱环境系统股份有限公司 | Drying system and sludge drying equipment |
-
2020
- 2020-11-30 CN CN202011368740.2A patent/CN112607998A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045275A (en) * | 2016-07-21 | 2016-10-26 | 黄志荣 | Sludge drying system |
| CN208454788U (en) * | 2018-04-27 | 2019-02-01 | 深圳市万信达生态环境股份有限公司 | A kind of low temperature drying equipment handling sludge |
| CN110360833A (en) * | 2019-07-31 | 2019-10-22 | 苏州海派特热能设备有限公司 | A kind of varying duty dehumidifying heat pump drying system |
| CN110487058A (en) * | 2019-08-30 | 2019-11-22 | 圣春新能源科技有限公司 | A kind of sludge heat pump drying system |
| CN213865892U (en) * | 2020-11-30 | 2021-08-03 | 广东申菱环境系统股份有限公司 | Drying system and sludge drying equipment |
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Application publication date: 20210406 |