CN214360958U - Low-temperature sludge drying and burning combined device - Google Patents
Low-temperature sludge drying and burning combined device Download PDFInfo
- Publication number
- CN214360958U CN214360958U CN202022991521.1U CN202022991521U CN214360958U CN 214360958 U CN214360958 U CN 214360958U CN 202022991521 U CN202022991521 U CN 202022991521U CN 214360958 U CN214360958 U CN 214360958U
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- sludge
- air pipe
- air
- heat exchanger
- circulation
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- Expired - Fee Related
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- 239000010802 sludge Substances 0.000 title claims abstract description 94
- 238000001035 drying Methods 0.000 title claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000009826 distribution Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The utility model relates to a low-temperature sludge drying and burning device, which comprises a sludge feeding device (1), a material distribution device (2), a sludge drier (3) and an air circulation pipeline connected with the sludge drier (3), wherein the air circulation pipeline comprises a circulation air pipe (7), a circulation fan (6), a return air pipe (9), a heat exchanger (10) and a hot air pipe (11) which are connected in sequence; air enters the sludge drier (3) from the hot air pipe (11) and is discharged out of the sludge drier (3) through the circulating air pipe (7); a moisture exhaust air pipe and a fresh air supply air pipe (15) are also arranged on a pipeline from the circulating fan (6) to the heat exchanger (10); the heat exchanger (10) is connected with an incinerator (13), and the incinerator (13) is connected with a sludge discharge hopper (12) through a pipeline. The utility model has the advantages of low energy consumption, high thermal efficiency, simple structure, fast drying speed, closed circulation and no peculiar smell.
Description
Technical Field
The invention relates to the technical field of sludge drying equipment, in particular to a low-temperature sludge drying and incinerating device.
Background
The existing sludge treatment device is a single drying and burning device, the two devices are not combined together, the occupied area of the arrangement between the two devices is large, the space can not be effectively saved, and in addition, the two devices are separated, the heat energy utilization efficiency is reduced, the heat loss is serious and the like.
The mesh belt drying device is a commonly used sludge drying device, can be widely used for sludge reduction drying projects of municipal sludge, industrial general solid waste sludge and the like, and is particularly suitable for drying granular, flaky and strip-shaped sludge with better air permeability.
The sludge drying needs to consume a large amount of heat energy, the sludge drying and the incinerator can be combined, the waste heat generated by the sludge incinerator is recycled through the air heat exchanger, the waste heat is exchanged into hot air to dry the sludge, and the drying temperature is lower than 150 ℃.
The mesh belt drying device is continuous production equipment commonly used for sludge drying, has the advantage that the operation condition can be kept constant in the whole drying process, and can ensure that the sludge is heated uniformly by additionally arranging the material distribution device.
Disclosure of Invention
The invention relates to sludge belt type drying equipment, in particular to a sludge drying and incinerating device, and aims to provide a composite mesh belt drying device which is green and closed in loop, high in heat efficiency, simple in structure, high in drying speed, high in production efficiency and free of drying peculiar smell.
In order to realize the purpose, the invention adopts the following technical scheme:
a low-temperature sludge drying and burning combined device comprises a sludge feeding device 1, a material distribution device 2, a sludge drying machine 3 and an air circulation pipeline connected with the sludge drying machine 3, wherein one end of the sludge drying machine 3 is connected with the sludge feeding device 1 through the material distribution device 2, the other end of the sludge drying machine is provided with a sludge discharge hopper 12, a multilayer mesh belt transmission device 4 is arranged between the material distribution device 2 and the sludge discharge hopper 12 in the sludge drying machine 3, and a multilayer mesh belt 5 is arranged on the multilayer mesh belt transmission device 4; the air circulation pipeline comprises a circulation air pipe 7, a circulation fan 6, an air return pipe 9, a heat exchanger 10 and a hot air pipe 11 which are connected in sequence; air enters the sludge drier 3 from the hot air pipe 11 and is discharged out of the sludge drier 3 by the circulating air pipe 7; a moisture exhaust air pipe 8 and a fresh air replenishing air pipe 15 are also arranged on a pipeline from the circulating fan 6 to the heat exchanger 10; the moisture exhaust air pipe 8 is connected with a moisture exhaust fan 14; the heat exchanger 10 is connected with an incinerator 13, and the incinerator 13 is connected with a sludge discharge hopper 12 through a pipeline.
In the utility model, wet sludge is uniformly paved on a middle layer of mesh belt through a material distribution device, and a mesh belt transmission device generally comprises 2-5 layers and continuously transmits the wet sludge from top to bottom until the wet sludge is discharged from a drier; the hot air conducts heat to the surface of wet sludge through a circulating fan and a heat exchanger, so that the sludge is quickly dried and discharged to an incinerator through a dry sludge discharge device; recycling heat generated by sludge incineration, and converting the heat into hot air required by sludge drying through an air heat exchanger; the moisture-containing air generated in the sludge drying process is treated by a dehumidifying device.
The circulating air pipe is arranged on the drier, waste heat generated by sludge incineration is converted into hot air through an air heat exchanger (a heat exchanger) additionally arranged at a secondary combustion pool of the incinerator, and the hot air directly conducts heat to wet sludge to be dried under the action of the fan, so that each layer of sludge is uniformly heated and is dried more quickly.
Compared with the prior art, the invention has the beneficial effects that:
1. the reusable waste heat of sludge incineration is changed into hot air for sludge drying, the multilayer mesh belt transmission device increases the sludge drying time, and the sludge is uniformly dried and the heat efficiency is improved by multilayer transmission and overturning in the drying process.
2. The air heat exchanger arranged on the incinerator can reuse the waste heat of sludge incineration, thereby further reducing the energy consumption of equipment operation.
3. The heat value of the sludge dried at low temperature is not lost, and the stability is reliable.
4. The automation degree is high.
5. The integrated design, the floor area is small, and the failure rate is low.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
The structure and the advantages of the present invention will be further explained with reference to the drawings.
Example one
Referring to fig. 1, a low-temperature sludge drying and incinerating device comprises a sludge feeding device 1, a material distribution device 2, a sludge drying machine 3 and an air circulation pipeline connected with the sludge drying machine 3, wherein one end of the sludge drying machine 3 is connected with the sludge feeding device 1 through the material distribution device 2, the other end of the sludge drying machine is provided with a sludge discharge hopper 12, a multilayer mesh belt transmission device 4 is arranged between the material distribution device 2 and the sludge discharge hopper 12 in the sludge drying machine 3, and a multilayer mesh belt 5 is arranged on the multilayer mesh belt transmission device 4; the air circulation pipeline comprises a circulation air pipe 7, a circulation fan 6, an air return pipe 9, a heat exchanger 10 and a hot air pipe 11 which are connected in sequence; air enters the sludge drier 3 from the hot air pipe 11 and is discharged out of the sludge drier 3 by the circulating air pipe 7; a moisture exhaust air pipe 8 and a fresh air replenishing air pipe 15 are also arranged on a pipeline from the circulating fan 6 to the heat exchanger 10; the moisture exhaust air pipe 8 is connected with a moisture exhaust fan 14; the heat exchanger 10 is connected with an incinerator 13, and the incinerator 13 is connected with a sludge discharge hopper 12 through a pipeline.
One example is: extruding wet sludge with the water content of 60-85% into particles (strips or particles) by a material distributor 2, uniformly spreading the particles on a mesh belt and a transmission device in a sludge drier 3, controlling the thickness to be 30-50 mm, conducting heat to the surface of the wet sludge by a circulating fan 6 and a heat exchanger 10, rapidly evaporating and drying the moisture of the wet sludge on the mesh belt, and discharging the dried sludge by a dry sludge discharge device 12; and the moisture generated in the sludge drying process is discharged through the moisture discharging air pipe 8.
The waste heat generated by sludge incineration can be made into hot air through heat exchange by a heat exchanger 10 arranged in the incinerator, and the hot air is directly transmitted to the sludge to be dried, so that each layer of sludge is uniformly heated and drying is accelerated.
The mesh belt and the transmission device are designed into 2-5 layers, and the multilayer design increases the drying time, so that the water content of the discharged sludge is reduced to below 10%.
Claims (2)
1. A low-temperature sludge drying and incineration combined device comprises a sludge feeding device (1), a material distribution device (2), a sludge drier (3) and an air circulation pipeline connected with the sludge drier (3), and is characterized in that one end of the sludge drier (3) is connected with the sludge feeding device (1) through the material distribution device (2), the other end of the sludge drier is provided with a sludge discharge hopper (12), a multilayer mesh belt transmission device (4) is arranged between the material distribution device (2) and the sludge discharge hopper (12) in the sludge drier (3), and a multilayer mesh belt (5) is arranged on the multilayer mesh belt transmission device (4); the air circulation pipeline comprises a circulation air pipe (7), a circulation fan (6), a return air pipe (9), a heat exchanger (10) and a hot air pipe (11) which are connected in sequence; air enters the sludge drier (3) from the hot air pipe (11) and is discharged out of the sludge drier (3) through the circulating air pipe (7); a moisture exhaust air pipe (8) and a fresh air replenishing air pipe (15) are also arranged on a pipeline from the circulating fan (6) to the heat exchanger (10); the moisture removing air pipe (8) is connected with a moisture removing fan (14); the heat exchanger (10) is connected with an incinerator (13), and the incinerator (13) is connected with a sludge discharge hopper (12) through a pipeline.
2. The low-temperature sludge drying and incinerating device according to claim 1, wherein the mesh belt transmission device is 2-5 layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022991521.1U CN214360958U (en) | 2020-12-14 | 2020-12-14 | Low-temperature sludge drying and burning combined device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022991521.1U CN214360958U (en) | 2020-12-14 | 2020-12-14 | Low-temperature sludge drying and burning combined device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214360958U true CN214360958U (en) | 2021-10-08 |
Family
ID=77985178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022991521.1U Expired - Fee Related CN214360958U (en) | 2020-12-14 | 2020-12-14 | Low-temperature sludge drying and burning combined device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214360958U (en) |
-
2020
- 2020-12-14 CN CN202022991521.1U patent/CN214360958U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211008 |