CN213357296U - System for preparing sludge carbon-based adsorption material - Google Patents
System for preparing sludge carbon-based adsorption material Download PDFInfo
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- CN213357296U CN213357296U CN202021907688.9U CN202021907688U CN213357296U CN 213357296 U CN213357296 U CN 213357296U CN 202021907688 U CN202021907688 U CN 202021907688U CN 213357296 U CN213357296 U CN 213357296U
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Abstract
The utility model discloses a system for preparation mud charcoal base adsorbing material, this system includes: the sludge deep dehydration unit is used for dehydrating sludge to obtain a sludge cake; the layering and granulating unit is used for extruding and granulating the mud cakes obtained after the mud cakes are dehydrated by the deep dehydration unit to obtain mud particles; the drying unit is used for drying the sludge particles to obtain dried sludge; the low-temperature carbonization unit is used for carbonizing the dried sludge at low temperature; the activation unit is used for activating the sludge subjected to low-temperature carbonization to obtain the sludge carbon-based adsorption material; the first cooling device is used for cooling the obtained sludge carbon-based adsorbing material; the deep sludge dewatering unit, the layering granulation unit, the drying unit, the low-temperature carbonization unit, the activation unit and the first cooling device are sequentially connected.
Description
Technical Field
The utility model belongs to the adsorbing material preparation field, more specifically relates to a system for preparing mud charcoal base adsorbing material.
Background
In recent years, the carbonization of sludge is fully determined at home and abroad, and sludge carbonization projects are also applied to parts of cities at home, wherein in the project applications, the moisture content of the sludge is reduced from 80% to 30% in the sludge drying process, the carbonization temperature is 400-500 ℃, and the carbonized product is mainly used for fuel, soil improvement for greening nursery gardens and the like.
However, the product produced by the current industrial carbonization process parameters has the defects that the adsorption performance is difficult to guarantee, certain tar smell exists, the manual operation environment is not facilitated, and the application range is limited. Therefore, the sludge carbonization process and the activation process need to be reviewed again, the process parameter control is systematically adjusted, and the purposes of improving the adsorption performance of the sludge-based pyrolytic carbon and expanding the application range of the sludge-based pyrolytic carbon are achieved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve above-mentioned problem, provide a system for preparing mud charcoal base adsorbing material.
In order to achieve the above object, the present invention provides a system for preparing a sludge carbon-based adsorbing material, the system comprising:
the sludge deep dehydration unit is used for dehydrating sludge to obtain a sludge cake;
the layering and granulating unit is used for extruding and granulating the mud cakes obtained after the mud cakes are dehydrated by the deep dehydration unit to obtain mud particles;
the drying unit is used for drying the sludge particles to obtain dried sludge;
the low-temperature carbonization unit is used for carbonizing the dried sludge at low temperature;
the activation unit is used for activating the sludge subjected to low-temperature carbonization to obtain the sludge carbon-based adsorption material;
the first cooling device is used for cooling the obtained sludge carbon-based adsorbing material;
the deep sludge dewatering unit, the layering granulation unit, the drying unit, the low-temperature carbonization unit, the activation unit and the first cooling device are sequentially connected.
Preferably, the system still includes first feed bin, set up in the mummification unit with between the low temperature carbonization unit, and respectively with the mummification unit with the low temperature carbonization unit is connected for temporary storage to the mummification mud that obtains.
Preferably, the system further comprises a second storage bin, which is arranged between the low-temperature carbonization unit and the activation unit, is respectively connected with the low-temperature carbonization unit and the activation unit, and is used for temporarily storing the sludge subjected to low-temperature carbonization; the second storage bin is connected with a first nitrogen generator, and the first nitrogen generator is used for providing nitrogen atmosphere protection for the second storage bin.
Preferably, the system further comprises a fourth bin connected with the activation unit and used for storing the activated sludge carbon-based adsorption material; and the fourth bin is connected with a second nitrogen generator, and the second nitrogen generator is used for providing nitrogen atmosphere protection for the fourth bin.
Preferably, the system further comprises a third silo; the third feed bin is arranged between the second feed bin and the activation unit and is respectively connected with the second feed bin and the activation unit, and the third feed bin is used for temporarily storing the sludge output by the second feed bin.
Preferably, the system further comprises a second cooling device, which is arranged between the low-temperature carbonization unit and the activation unit and is respectively connected with the low-temperature carbonization unit and the activation unit, and the second cooling device is used for cooling the sludge after low-temperature carbonization.
Preferably, the system further comprises a screening unit adopting a screening machine; and the screening unit is used for screening the sludge carbon-based adsorption material to obtain the sludge carbon-based adsorption material required by the target.
Preferably, the sludge deep dehydration unit is a plate-and-frame filter press or a belt filter press.
Preferably, the layering and granulating unit is an extrusion granulator or a plodder.
Preferably, the drying unit is a low-temperature heat pump drying machine, a belt drying machine or a disc drying machine.
Preferably, the low-temperature carbonization unit is a continuous fixed bed pyrolysis reactor, a continuous multi-section solid pyrolysis reactor, a continuous moving bed pyrolysis reactor or a fluidized bed pyrolysis reactor.
Preferably, the activation unit is a continuous rotary kiln, a sequencing batch fixed bed or a shaft furnace.
The utility model has the advantages that: the sludge carbonization unit and the product activation unit are organically integrated together to produce the sludge carbon-based product with higher adsorption performance, thereby effectively widening the application range of the sludge carbonization product and being beneficial to the application and popularization of the sludge carbonization engineering.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows a schematic structural diagram of a system for preparing a sludge carbon-based adsorption material according to an embodiment of the present invention.
Description of reference numerals: the system comprises a sludge deep dehydration unit 1, a layering granulation unit 2, a drying unit 3, a low-temperature carbonization unit 4, an activation unit 5, a first bin 6, a second bin 7, a third bin 8, a fourth bin 9, a first nitrogen generator 10, a second nitrogen generator 11, a second cooling device 12, a first cooling device 13 and a screening unit 14.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The utility model provides a system for preparation mud charcoal base adsorbing material, this system includes:
the sludge deep dehydration unit is used for dehydrating sludge to obtain a sludge cake;
the layering and granulating unit is used for extruding and granulating the mud cakes obtained after the mud cakes are dehydrated by the deep dehydration unit to obtain mud particles;
the drying unit is used for drying the sludge particles to obtain dried sludge;
the low-temperature carbonization unit is used for carbonizing the dried sludge at low temperature;
the activation unit is used for activating the sludge subjected to low-temperature carbonization to obtain a sludge carbon-based adsorption material;
the first cooling device is used for cooling the obtained sludge carbon-based adsorbing material;
the deep sludge dewatering unit, the layering granulation unit, the drying unit, the low-temperature carbonization unit, the activation unit and the first cooling device are sequentially connected.
Preferably, the system further comprises a first bin which is arranged between the drying unit and the low-temperature carbonization unit, is respectively connected with the drying unit and the low-temperature carbonization unit, and is used for temporarily storing the obtained dried sludge.
As a preferred scheme, the system further comprises a second storage bin which is arranged between the low-temperature carbonization unit and the activation unit, is respectively connected with the low-temperature carbonization unit and the activation unit, and is used for temporarily storing the sludge subjected to low-temperature carbonization; the second bin is connected with a first nitrogen generator, and the first nitrogen generator is used for providing nitrogen atmosphere protection for the second bin.
As a preferable scheme, the system further comprises a fourth bin which is connected with the activation unit and used for storing the activated sludge carbon-based adsorption material; and the fourth bin is connected with a second nitrogen generator, and the second nitrogen generator is used for providing nitrogen atmosphere protection for the fourth bin.
As a preferred scheme, the system also comprises a third storage bin; the third feed bin sets up between second feed bin and activation unit to be connected with second feed bin and activation unit respectively, the third feed bin is used for temporarily storing the mud of second feed bin output.
When second feed bin and third feed bin set up simultaneously, the reserves of general third feed bin 1/3 ~ 1/2 third feed bin, the reason lies in: when the treatment capacity of the activation unit is small (such as only one shaft furnace), the second storage bin receives a large amount of materials conveyed by the low-temperature carbonization unit, conveys the materials to the third storage bin, and conveys the materials to the activation unit with the small treatment capacity, so that the single machine can be supplied independently.
Preferably, the system further comprises a second cooling device, which is arranged between the low-temperature carbonization unit and the activation unit and is respectively connected with the low-temperature carbonization unit and the activation unit, and the second cooling device is used for cooling the sludge after low-temperature carbonization.
The first cooling device and the second cooling device described above can both use cooling devices conventionally adopted by those skilled in the art to achieve the purpose of cooling.
Preferably, the system also comprises a screening unit which adopts a screening machine; and the screening unit is used for screening the sludge carbon-based adsorption material to obtain the sludge carbon-based adsorption material required by the target.
As a preferred scheme, in the practical application process of the system, the particle size of the obtained sludge carbon-based adsorption material required by the target is less than or equal to 10mm after screening.
Preferably, the sludge deep dehydration unit is a plate-and-frame filter press or a belt filter press.
Preferably, the layering and granulating unit is an extrusion granulator or a plodder.
Preferably, the drying unit is a low-temperature heat pump drying machine, a belt drying machine or a disc drying machine.
Preferably, the low-temperature carbonization unit is a continuous fixed bed pyrolysis reactor, a continuous multi-section solid pyrolysis reactor, a continuous moving bed pyrolysis reactor or a fluidized bed pyrolysis reactor.
Preferably, the activation unit is a continuous rotary kiln, a sequencing batch fixed bed or a shaft furnace.
Example 1
The present embodiment provides a system for preparing a sludge carbon-based adsorbing material, and fig. 1 shows a schematic structural diagram of a system for preparing a sludge carbon-based adsorbing material according to an embodiment of the present invention.
As shown in fig. 1, the system includes:
the sludge deep dehydration unit 1 is used for dehydrating sludge to obtain a sludge cake;
the layering granulation unit 2 is used for extruding and granulating the mud cakes obtained after the sludge is dehydrated by the sludge deep dehydration unit 1 to obtain sludge particles;
the drying unit 3 is used for drying the sludge particles to obtain dried sludge;
a first bunker 6 for temporarily storing the obtained dried sludge;
the low-temperature carbonization unit 4 is used for carbonizing the dried sludge at low temperature;
a second cooling device 12 for cooling the sludge carbonized at the low temperature;
the second storage bin 7 is used for temporarily storing the sludge subjected to low-temperature carbonization; the second storage bin 7 is connected with a first nitrogen generator 10, and the first nitrogen generator 10 is used for providing nitrogen atmosphere protection for the second storage bin 7;
a third storage bin 8 for temporarily storing the sludge output from the second storage bin 7;
the storage capacity of the third bin 8 is 1/3-1/2 of the storage capacity of the second bin 7;
the activation unit 5 is used for activating the sludge carbonized at the low temperature to obtain a sludge carbon-based adsorption material;
a first cooling device 13 for cooling the obtained sludge carbon-based adsorbing material;
the fourth bin 9 is used for storing the activated and cooled sludge carbon-based adsorbing material; the fourth bin 9 is connected with a second nitrogen generator 11, and the second nitrogen generator 11 is used for providing nitrogen atmosphere protection for the fourth bin 9;
and the screening unit 14 is used for screening to obtain the sludge carbon-based adsorbing material with the particle size of less than or equal to 10 mm.
The device comprises a sludge deep dehydration unit 1, a layering granulation unit 2, a drying unit 3, a first bin 6, a low-temperature carbonization unit 4, a second cooling device 12, a second bin 7, a third bin 8, an activation unit 5, a first cooling device 13, a fourth bin 9 and a screening unit 14 which are connected in sequence.
Sludge deep dehydration unit 1, layering granulation unit 2, mummification unit 3, first feed bin 6, low temperature carbonization unit 4 passes through belt conveyor and connects, low temperature carbonization unit 4, second feed bin 7 passes through second cooling device 12 and connects, second feed bin 7, third feed bin 8, activation unit 5 passes through screw conveyor and connects, activation unit 5, fourth feed bin 9 passes through first cooling device 13 and screw conveyor and connects, fourth feed bin 9, 14 buckets of screening unit pass through belt conveyor and connect.
Wherein the sludge deep dehydration unit 1 is a plate-and-frame filter press; the layering and granulating unit 2 is a plodder; the drying unit 3 is a belt type drying machine; the low-temperature carbonization unit 4 is a continuous fixed bed pyrolysis reaction furnace; the activation unit 5 is a shaft furnace; the screening unit 14 is a screening machine; the second cooling device 12 and the first cooling device 13 are cooling water circulation devices.
The system is adopted to prepare the sludge carbon-based adsorption material for the sludge generated by a certain municipal sewage treatment plant, the water content of the sludge is 97 percent, and the content of organic components is 50 percent; after the sludge is dehydrated by the sludge deep dehydration unit 1, the water content of the sludge cake is reduced to 70%, the dehydrated sludge cake is layered to the particle size of 5mm by the layering granulation unit 2, the dehydrated sludge cake is dried by the drying unit 3 until the water content of sludge particles is reduced to 10%, the dried sludge particles are conveyed to the first storage bin 6 for temporary storage, then the dried sludge particles are subjected to pyrolysis reaction in the low-temperature carbonization unit 4, the pyrolysis temperature is controlled at 500 ℃, and the reaction time is 30 min. After being cooled by a second cooling device 12, the carbonized material is conveyed to an activation unit 5 for activation through a second bin 7 and a third bin 8, the activation temperature is 800 ℃, and the activation reaction time is 30 min; and then the sludge carbon-based adsorbing material is obtained after the sludge carbon-based adsorbing material is cooled by the first cooling device 13, temporarily stored in the fourth storage bin 9 and screened by the screening unit 14. The iodine value of the obtained sludge carbon-based adsorbing material is as follows: 281mg/g, methylene blue adsorption value: 101mg/g, and the phenol adsorption rate is 180 mg/g.
Example 2
The difference from example 1 is that, unlike the sewage treatment plant from which sludge is derived, the water content of the sludge is 97% and the organic component content is 50%.
The iodine value of the obtained sludge carbon-based adsorbing material is as follows: 177mg/g, methylene blue adsorption value: 82mg/g, phenol adsorption rate 150 mg/g.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A system for preparing a sludge carbon-based adsorption material, the system comprising:
the sludge deep dehydration unit is used for dehydrating sludge to obtain a sludge cake;
the layering and granulating unit is used for extruding and granulating the mud cakes obtained after the mud cakes are dehydrated by the deep dehydration unit to obtain mud particles;
the drying unit is used for drying the sludge particles to obtain dried sludge;
the low-temperature carbonization unit is used for carbonizing the dried sludge at low temperature;
the activation unit is used for activating the sludge subjected to low-temperature carbonization to obtain the sludge carbon-based adsorption material;
the first cooling device is used for cooling the obtained sludge carbon-based adsorbing material;
the deep sludge dewatering unit, the layering granulation unit, the drying unit, the low-temperature carbonization unit, the activation unit and the first cooling device are sequentially connected.
2. The system of claim 1,
the system also comprises a first storage bin which is arranged between the drying unit and the low-temperature carbonization unit, is respectively connected with the drying unit and the low-temperature carbonization unit, and is used for temporarily storing the obtained dried sludge;
the system also comprises a second storage bin which is arranged between the low-temperature carbonization unit and the activation unit, is respectively connected with the low-temperature carbonization unit and the activation unit, and is used for temporarily storing the sludge subjected to low-temperature carbonization; the second storage bin is connected with a first nitrogen generator, and the first nitrogen generator is used for providing nitrogen atmosphere protection for the second storage bin;
the system also comprises a fourth bin which is connected with the activation unit and used for storing the activated sludge carbon-based adsorption material; and the fourth bin is connected with a second nitrogen generator, and the second nitrogen generator is used for providing nitrogen atmosphere protection for the fourth bin.
3. The system of claim 2, further comprising a third silo; the third feed bin is arranged between the second feed bin and the activation unit and is respectively connected with the second feed bin and the activation unit, and the third feed bin is used for temporarily storing the sludge output by the second feed bin.
4. The system of claim 1, further comprising a second cooling device disposed between the low-temperature carbonization unit and the activation unit and respectively connected to the low-temperature carbonization unit and the activation unit, wherein the second cooling device is configured to cool the sludge after low-temperature carbonization.
5. The system of claim 1, further comprising a screening unit employing a screening machine;
and the screening unit is used for screening the sludge carbon-based adsorption material to obtain the sludge carbon-based adsorption material required by the target.
6. The system of claim 1, wherein the deep sludge dewatering unit is a plate and frame filter press or a belt filter press.
7. The system of claim 1, wherein the bead pelletizing unit is an extrusion pelletizer or a plodder.
8. The system of claim 1, wherein the drying unit is a low temperature heat pump dryer, a belt dryer, or a disc dryer.
9. The system of claim 1, wherein the low temperature carbonization unit is a continuous fixed bed pyrolysis reactor, a continuous multi-stage solid pyrolysis reactor, a continuous moving bed pyrolysis reactor, or a fluidized bed pyrolysis reactor.
10. The system of claim 1, wherein the activation unit is a continuous rotary kiln, a sequencing batch fixed bed, or a shaft furnace.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115532230A (en) * | 2022-10-19 | 2022-12-30 | 北京城市排水集团有限责任公司 | Method for preparing sludge-based functional material by acid pickling deliming-high temperature activation, sludge-based functional material and application |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115532230A (en) * | 2022-10-19 | 2022-12-30 | 北京城市排水集团有限责任公司 | Method for preparing sludge-based functional material by acid pickling deliming-high temperature activation, sludge-based functional material and application |
| CN115532230B (en) * | 2022-10-19 | 2024-03-12 | 北京城市排水集团有限责任公司 | Method for preparing sludge-based functional material by acid pickling and deashing-high-temperature activation, sludge-based functional material and application |
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