CN117023940A - Sludge drying system and sludge drying method - Google Patents
Sludge drying system and sludge drying method Download PDFInfo
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- CN117023940A CN117023940A CN202311291461.4A CN202311291461A CN117023940A CN 117023940 A CN117023940 A CN 117023940A CN 202311291461 A CN202311291461 A CN 202311291461A CN 117023940 A CN117023940 A CN 117023940A
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- drying treatment
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- 239000010802 sludge Substances 0.000 title claims abstract description 174
- 238000001035 drying Methods 0.000 title claims abstract description 122
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000000034 method Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 9
- 238000007791 dehumidification Methods 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 8
- 239000002918 waste heat Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 5
- 239000002910 solid waste Substances 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000004065 wastewater treatment Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The application relates to the technical field of solid waste disposal, in particular to a sludge drying system and a sludge drying method. The sludge drying system comprises: the first subsystem is used for treating the first sludge in a first drying treatment mode; the second subsystem is used for treating second sludge in a second drying treatment mode; the drying treatment heat source of the second subsystem is from supersaturated steam provided by a thermal power plant; wherein the water content of the second sludge is higher than the water content of the first sludge. According to the application, two drying processes are coupled and combined with the sludge drying temperature steps of the two drying processes, heat in the high-temperature drying process is recovered and used as a heat source of the low-temperature drying process, so that the heat utilization rate of steam is improved, and the steam consumption and wet sludge drying treatment cost are reduced.
Description
Technical Field
The application relates to the technical field of solid waste disposal, in particular to a sludge drying system and a sludge drying method.
Background
At present, two types of solid waste sludge are mainly mixed and burned after being treated by a sewage treatment plant, namely, the sludge discharged by a centrifugal dehydrator with the water content of 80 percent and the sludge discharged by a plate-and-frame filter press with the water content of 60 percent.
At present, the means for disposing the sludge comprise a plurality of paths such as landfill, composting, building material utilization, incineration and the like, and the sludge incineration generally realizes the reduction, harmless and recycling disposal of the sludge through a cement rotary kiln or a coal-fired boiler according to a certain mixing ratio. When the coal-fired boiler of the thermal power plant is in blending combustion, wet sludge with the water content of 60-80% needs to be dried to dry sludge with the water content of less than 40% before blending combustion. The sludge needs to consume a certain energy heat source during drying, the drying heat source provided by the thermal power plant is mainly low-grade supersaturated steam, the steam parameters are 0.8-1.2 MPa and 200 ℃, in the direct cost of sludge drying, the steam accounts for about 79 percent, the steam consumption influences the economic benefits of a drying project, and the technology point of great concern is realized in the aspects of selecting a drying system for drying the sludge to reduce the steam consumption and the sludge disposal cost.
Disclosure of Invention
The embodiment of the application aims to provide a sludge drying system and a sludge drying method, so as to improve the heat utilization rate of steam and reduce the steam consumption and wet sludge drying treatment cost.
In order to achieve the above object, a first aspect of the present application provides a sludge drying system, comprising: the first subsystem is used for treating the first sludge in a first drying treatment mode; the second subsystem is used for treating second sludge in a second drying treatment mode; wherein, the drying treatment heat source of the second subsystem is from supersaturated steam provided by a thermal power plant; wherein, the second drying treatment comprises: heating air near the second sludge by using supersaturated steam, evaporating water vapor after the second sludge absorbs heat in the heated air to obtain dry sludge, and forming exhaust steam by the evaporated water vapor and the heated air; the drying treatment heat source of the first subsystem is from the waste heat after the sludge is dried and treated by the second subsystem; the second sludge has a higher water content than the first sludge.
Based on the first aspect, in some embodiments of the application, the first subsystem includes: the belt dryer is used for treating the first sludge in a first drying treatment mode to obtain dry sludge; the hot water circulation pipeline is used for providing a heat source for the belt drier; the second subsystem includes: the disc dryer is used for treating the second sludge in a second drying treatment mode to obtain dry sludge; the primary heat exchanger is used for heating the medium in the hot water circulation pipeline by utilizing the heat in the exhaust steam.
Based on the first aspect, in some embodiments of the application, the belt dryer includes: the drying chamber is used for providing a treatment place for drying the first sludge; the first subsystem further comprises: the first dehumidification device is used for keeping the humidity in the drying chamber within a preset range in the process of drying the first sludge.
Based on the first aspect, in some embodiments of the application, the first dehumidifying apparatus includes: the air extracting device is used for regularly extracting air in the drying chamber; and the condensing device is used for condensing the air extracted by the air extracting device, so that the water vapor in the air is liquefied to achieve the aim of maintaining the humidity in the drying chamber within a preset range.
Based on the first aspect, in some embodiments of the application, the second subsystem further comprises: and the dust remover is used for removing dust in the exhaust steam.
Based on the first aspect, in some embodiments of the application, the second subsystem further comprises: and the second dehumidification equipment is used for removing redundant moisture in the exhaust steam.
Based on the first aspect, in some embodiments of the application, the sludge drying system further comprises: and the dry sludge bin is used for storing dry sludge.
In a second aspect, the present application provides a sludge drying method, the method comprising: treating the first sludge by adopting a first drying treatment mode; treating the second sludge by adopting a second drying treatment mode; the drying treatment heat source of the second drying treatment mode is from supersaturated steam provided by a thermal power plant; the second drying treatment comprises: heating air near the second sludge by using supersaturated steam, evaporating water vapor after the second sludge absorbs heat in the air to obtain dry sludge, wherein the water vapor and the heated air form exhaust steam together; the drying treatment heat source of the first drying treatment mode is from the waste heat in the exhaust steam; the second water content is higher than the first water content.
Based on the second aspect, in some embodiments of the present application, the value range of the water content of the first sludge is 55-83%.
Based on the second aspect, in some embodiments of the present application, the value range of the water content of the second sludge is 60-85%;
based on the second aspect, in some embodiments of the application, the first drying process includes: heating air near the first sludge by using exhaust steam, and evaporating water vapor after the first sludge absorbs heat in the heated air to obtain dry sludge; wherein the exhaust steam is not in direct contact with the first sludge.
Based on the second aspect, in some embodiments of the application, the moisture content of the dry sludge is less than 40%.
The sludge drying system and the method provided by the application have at least the following beneficial effects:
according to the scheme, two drying processes (such as a high-temperature steam disc drying process and a low-temperature belt drying process) are coupled, a sludge drying temperature step of the two drying processes is combined, heat of high-temperature wet exhaust steam in the high-temperature steam disc drying process is recovered and used as a heat source of a low-temperature belt drying process hot water circulation system, heat recovery and utilization are carried out, the heat utilization rate is improved, the steam consumption is saved finally, and the sludge drying treatment cost is reduced.
Additional features and advantages of embodiments of the application will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the embodiments of the application. In the drawings:
fig. 1 schematically shows a schematic structure of a sludge drying system according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it should be understood that the detailed description described herein is merely for illustrating and explaining the embodiments of the present application, and is not intended to limit the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, if directional indications (such as up, down, left, right, front, rear, etc.) are involved in the embodiment of the present application, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Example 1
The embodiment provides a sludge drying system, the sludge drying system includes: the first subsystem is used for treating the first sludge in a first drying treatment mode; the second subsystem is used for treating second sludge in a second drying treatment mode; wherein, the drying treatment heat source of the second subsystem is from supersaturated steam provided by a thermal power plant; the second drying treatment comprises: heating air near the second sludge by using supersaturated steam, evaporating water vapor after the second sludge absorbs heat in the air to obtain dry sludge, wherein the water vapor and the heated air form exhaust steam together; the drying treatment heat source of the first subsystem is from waste heat in exhaust steam; the second water content is higher than the first water content.
Specifically, the sludge drying system provided in this embodiment may adopt the structure shown in fig. 1. The sources of sludge mainly include sewage treatment plants (about 80% moisture), municipal and industrial sludge (about 60% moisture), and in this embodiment sludge with higher moisture is mainly treated by the second subsystem, while in this embodiment sludge with lower moisture is mainly treated by the first subsystem.
Wherein the second subsystem comprises: the device comprises a second wet sludge bin, a second wet sludge conveyor, a disc drier, a second closed conveyor, a dust remover, a primary heat exchanger, second dehumidification equipment, a blower, a second cooling water tower, a second wastewater treatment device and a condensate tank. The sludge treatment process of the second subsystem comprises the following steps: firstly, the sludge with higher water content is conveyed to a second wet sludge bin by a transport vehicle, and a proper amount of sludge is conveyed into the disc drying machine by a second wet sludge conveyor according to the single treatable capacity of the disc drying machine (a plurality of disc drying machines can work simultaneously). The steam pipeline is arranged to penetrate through the disc drier, supersaturated steam (about 160 ℃) provided by the thermal power plant circulates in the steam pipeline, air in the disc drier is heated, the air temperature is increased to heat sludge, and moisture and partial organic matters in the sludge evaporate after the sludge is heated and are scattered in the disc drier. In order to ensure the drying effect of the sludge, the air humidity in the disc dryer needs to be kept in a relatively low range, so that the evaporated water vapor needs to be timely discharged, and in order to discharge the excessive water vapor, the air in the disc dryer needs to be extracted together (the air comprises the evaporated water vapor, a small amount of organic volatile matters, ammonia gas and the like and forms exhaust steam together with the air). The exhaust steam is heated by the high-temperature supersaturated steam, and has a higher temperature (100-105 ℃) at the moment, so that the heat utilization rate is improved, and in the embodiment, part of heat is used as a heat source to be provided for the first subsystem (heat exchange is realized through the primary heat exchanger). Since the sludge is initially divided into the first sludge (for example, municipal and industrial sludge having a water content of about 60%) and the second sludge (sludge produced by a sewage treatment plant having a water content of about 80%) according to the water content of the sludge, the water content of the first sludge is lower than that of the second sludge, and thus, even if the temperature of exhaust steam is not as high as that of supersaturated steam, a high drying efficiency can be ensured.
After the exhaust steam is exchanged heat to the first subsystem, the temperature is reduced (about 77 ℃), and because the main component in the exhaust steam is air, a large amount of air (oxygen) is needed in the combustion process of the boiler, the part of air is sent into the boiler to support combustion in the embodiment, but water vapor is still present in the exhaust steam, which is not beneficial to the combustion of raw coal in the boiler, and the second dehumidification equipment is utilized to dehumidify the exhaust steam in the embodiment. The second dehumidification equipment comprises a second heat exchanger, a condensation pipeline and a second cooling water tower for cooling the condensation pipeline, waste steam exchanges heat with the condensation pipeline to cool through the second heat exchanger, and after the waste steam cools, water vapor in the waste steam is condensed into water drops, and after the water content is reduced to a preset range, the waste steam is sent to the coal-fired boiler through a blower.
The exhaust steam has the condition of temperature reduction in the process of passing through the primary heat exchanger and the secondary heat exchanger, and in the two stages, part of water vapor is liquefied and condensed into water, and the generated condensed wastewater is sent to a second wastewater treatment device for further treatment.
In addition, when the water content of the sludge is reduced to below 40%, the sludge can be regarded as dry sludge, the dry sludge flows out of the disc drier and is then sent to a dry sludge bin for storage by a second closed conveyor, and the dry sludge can be used as fuel to be mixed with raw coal for combustion. And after the second sludge is heated, the supersaturated steam is liquefied and condensed into water by heat release, and the water is relatively clean due to the fact that the water is not directly contacted with the sludge, and the water can be introduced into a condensation water tank for temporary storage for factory recycling.
Specifically, the first subsystem includes: the device comprises a first wet sludge bin, a first wet sludge conveyor, a belt drier, a first closed conveyor, a first cooling water tower and a first wastewater treatment device. The core of the first subsystem is mainly to utilize a belt dryer to dry the first sludge. The sludge treatment process of the second subsystem comprises the following steps: firstly, the sludge with lower water content is conveyed to a first wet sludge bin by a transport vehicle, and a proper amount of sludge is conveyed into a belt drier by a first wet sludge conveyor according to the single treatable capacity of the belt drier (a plurality of belt driers can work simultaneously). And a hot water circulation pipeline is arranged to heat the air in the drying chamber, so as to indirectly heat the sludge. Wherein the drying chamber is a place for heating (first) sludge in the belt dryer. Similarly, the sludge absorbs heat to evaporate water vapor, which drifts inside the drying chamber. In order to ensure the drying effect of the sludge, the air humidity in the drying chamber needs to be maintained in a relatively low range, so that the evaporated water vapor needs to be timely discharged. Specifically, the first dehumidification device comprises an air extracting device and a condensing device, wherein the air extracting device is used for regularly extracting air in the drying chamber; the condensing device (for example, a circulating condensing tube) is used for condensing the air extracted by the air extracting device, so that the water vapor in the air is liquefied to achieve the purpose of maintaining the humidity in the drying chamber within a preset range, and the condensed wastewater generated in the process can be directly sent to the first wastewater treatment device (the first wastewater treatment device and the second wastewater treatment device in the second subsystem can be the same wastewater treatment device, which is not distinguished in fig. 1). Further, for continuous cooling, a condensing device (e.g., a circulating condensing pipe) may be connected to the first cooling tower (the same cooling tower as the second cooling tower may be the same cooling tower, which is not distinguished in fig. 1). The hot water circulation pipeline can exchange heat from the exhaust steam of the second subsystem through the primary heat exchanger so as to improve the temperature of a heating medium in the hot water circulation pipeline.
In addition, when the water content of the sludge is reduced to below 40%, the sludge can be regarded as dry sludge, the dry sludge flows out of the belt drier, and then the dry sludge is sent to a dry sludge bin for storage by a first closed conveyor and can be used as fuel to be mixed with raw coal for combustion.
Example 2
The embodiment provides a sludge drying method, which comprises the following steps: treating the first sludge by adopting a first drying treatment mode; treating the second sludge by adopting a second drying treatment mode; the drying treatment heat source of the second drying treatment mode is from supersaturated steam provided by a thermal power plant; the second drying treatment comprises: heating air near the second sludge by using supersaturated steam, evaporating water vapor after the second sludge absorbs heat in the air to obtain dry sludge, wherein the water vapor and the heated air form exhaust steam together; the drying treatment heat source of the first drying treatment mode is from the waste heat in the exhaust steam; the second water content is higher than the first water content.
The steps of the method can be implemented by using the sludge drying system provided in embodiment 1, and specific reference is made to embodiment 1, which is not described herein.
Further, the water content of the first sludge is in a range of 55-83%.
Further, the water content of the second sludge is in a range of 60-85%.
It should be noted that, although the value range of the water content of the first sludge overlaps with the value range of the water content of the second sludge, it is necessary to preferably ensure that the water content of the second sludge is higher than that of the first sludge before the value range is satisfied, because the heat source of the second subsystem is derived from supersaturated steam provided by the thermal power plant, the heat amount is higher, and it is possible to ensure that the sludge with higher water content can be dried as soon as possible.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (10)
1. A sludge drying system, the sludge drying system comprising:
the first subsystem is used for treating the first sludge in a first drying treatment mode;
the second subsystem is used for treating second sludge in a second drying treatment mode; the drying treatment heat source of the second subsystem is from supersaturated steam provided by a thermal power plant;
wherein, the second drying treatment comprises: heating air near the second sludge by using supersaturated steam, evaporating water vapor after the second sludge absorbs heat in the heated air to obtain dry sludge, and forming exhaust steam by the evaporated water vapor and the heated air;
the drying treatment heat source of the first subsystem is from waste heat in exhaust steam;
the second sludge has a higher water content than the first sludge.
2. A sludge drying system as claimed in claim 1, wherein,
the first subsystem includes:
the belt dryer is used for treating the first sludge in a first drying treatment mode to obtain dry sludge;
the hot water circulation pipeline is used for providing a heat source for the belt drier;
the second subsystem includes:
the disc dryer is used for treating the second sludge in a second drying treatment mode to obtain dry sludge;
the primary heat exchanger is used for heating the medium in the hot water circulation pipeline by utilizing the heat in the exhaust steam.
3. The sludge drying system of claim 2 wherein the belt dryer comprises:
the drying chamber is used for providing a treatment place for drying the first sludge;
the first subsystem further comprises:
the first dehumidification device is used for keeping the humidity in the drying chamber within a preset range in the process of drying the first sludge.
4. A sludge drying system as claimed in claim 3 wherein the first dehumidifying apparatus comprises:
the air extracting device is used for regularly extracting air in the drying chamber;
and the condensing device is used for condensing the air extracted by the air extracting device, so that the water vapor in the air is liquefied to achieve the aim of maintaining the humidity in the drying chamber within a preset range.
5. The sludge drying system of claim 2 wherein the second subsystem further comprises:
and the dust remover is used for removing dust in the exhaust steam.
6. The sludge drying system of claim 2 wherein the second subsystem further comprises:
and the second dehumidification equipment is used for removing redundant moisture in the exhaust steam.
7. The sludge drying system of claim 2 further comprising:
and the dry sludge bin is used for storing dry sludge.
8. A method of drying sludge, the method comprising:
treating the first sludge by adopting a first drying treatment mode;
treating the second sludge by adopting a second drying treatment mode;
the drying treatment heat source of the second drying treatment mode is from supersaturated steam provided by a thermal power plant; the second drying treatment comprises: heating air near the second sludge by using supersaturated steam, evaporating water vapor after the second sludge absorbs heat in the heated air to obtain dry sludge, and forming exhaust steam by the evaporated water vapor and the heated air;
the drying treatment heat source of the first drying treatment mode is from waste heat in exhaust steam;
the second sludge has a higher water content than the first sludge.
9. The sludge drying method as claimed in claim 8, wherein the first drying process includes: heating air near the first sludge by using exhaust steam, and evaporating water vapor after the first sludge absorbs heat in the heated air to obtain dry sludge; wherein the exhaust steam is not in direct contact with the first sludge.
10. The sludge drying method as claimed in claim 8, wherein the water content of the dry sludge is less than 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311291461.4A CN117023940A (en) | 2023-10-08 | 2023-10-08 | Sludge drying system and sludge drying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311291461.4A CN117023940A (en) | 2023-10-08 | 2023-10-08 | Sludge drying system and sludge drying method |
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| CN117023940A true CN117023940A (en) | 2023-11-10 |
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| CN202311291461.4A Pending CN117023940A (en) | 2023-10-08 | 2023-10-08 | Sludge drying system and sludge drying method |
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| JP2005074328A (en) * | 2003-09-01 | 2005-03-24 | Kurimoto Ltd | Method for treating organic sludge |
| KR20080108393A (en) * | 2008-11-25 | 2008-12-15 | 장승권 | The manufacturing method light-weight carbonization energy resources conversion using water and wastewater sludge |
| CN104310746A (en) * | 2014-10-29 | 2015-01-28 | 天津市美好生活科技有限公司 | Method for drying and incinerating treatment of dewatered sludge |
| KR101872428B1 (en) * | 2017-12-18 | 2018-07-31 | (주)에코이노베이션 | Sewagee sludge treatment system |
| CN110304804A (en) * | 2019-02-18 | 2019-10-08 | 联合瑞升（北京）科技有限公司 | A kind of sludge hot is quenched and desiccation is carbonized energy conserving system |
| CN217103532U (en) * | 2021-05-06 | 2022-08-02 | 北京艺高人和工程设备有限公司 | Energy-saving secondary sludge drying system |
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-
2023
- 2023-10-08 CN CN202311291461.4A patent/CN117023940A/en active Pending
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| JP2005074328A (en) * | 2003-09-01 | 2005-03-24 | Kurimoto Ltd | Method for treating organic sludge |
| KR20080108393A (en) * | 2008-11-25 | 2008-12-15 | 장승권 | The manufacturing method light-weight carbonization energy resources conversion using water and wastewater sludge |
| CN104310746A (en) * | 2014-10-29 | 2015-01-28 | 天津市美好生活科技有限公司 | Method for drying and incinerating treatment of dewatered sludge |
| KR101872428B1 (en) * | 2017-12-18 | 2018-07-31 | (주)에코이노베이션 | Sewagee sludge treatment system |
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| CN217103532U (en) * | 2021-05-06 | 2022-08-02 | 北京艺高人和工程设备有限公司 | Energy-saving secondary sludge drying system |
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Application publication date: 20231110 |