CN211170400U - Solid waste drying device - Google Patents
Solid waste drying device Download PDFInfo
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- CN211170400U CN211170400U CN201921552802.8U CN201921552802U CN211170400U CN 211170400 U CN211170400 U CN 211170400U CN 201921552802 U CN201921552802 U CN 201921552802U CN 211170400 U CN211170400 U CN 211170400U
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Abstract
The utility model discloses a drying device of solid waste, including solid waste conveyor, a drying section of thick bamboo and vapor compressor, solid waste conveyor is linked together with a drying section of thick bamboo. The drying cylinder is sequentially provided with an upper steam area, a heat exchange area, a lower steam area and a hot oil area which are communicated with each other from top to bottom, and a heat exchanger is arranged in the heat exchange area. The heat exchanger is provided with a steam inlet and a condensed water outlet, the inlet of the steam compressor is communicated with the upper steam area or the lower steam area, and the outlet is communicated with the steam inlet of the heat exchanger. The hot oil area is provided with a first liquid outlet and a second liquid outlet, the first liquid outlet is communicated with the upper steam area through an internal circulation pipeline, and the second liquid outlet is communicated with the upper steam area through an external circulation pipeline. The utility model provides a solid waste drying device can retrieve most water evaporation's energy, can obtain the moisture content and be less than 10% dry solid wastes material, more does benefit to the burning after the solid waste shaping and deals with.
Description
Technical Field
The utility model relates to a drying device technical field, in particular to solid waste drying device.
Background
The dehydration of wet solid waste, particularly municipal sludge, is usually performed by centrifugal dehydration, plate-and-frame filter-press dehydration, belt filter-press dehydration, or the like, and the moisture content of the wet solid waste obtained by centrifugal dehydration, plate-and-frame filter-press dehydration, or belt filter-press dehydration is high, usually 65% to 85%. In order to further reduce the weight and volume of the wet solid waste, the moisture content of the wet solid waste needs to be reduced significantly by adopting a drying mode.
The manner of drying wet solid waste is generally as follows: the hot flue gas directly dries the wet solid waste; or heating the wall to indirectly heat the air of the wet solid waste on the wall, thereby indirectly drying the wet solid waste on the wall. In either way, because the energy required by the direct evaporation of the water is about 2256 kj/kg, the energy consumption is large, most of the energy is not recovered, the unit decrement energy for treating the wet solid waste is about the same as the evaporation energy of unit water amount, and the tail gas with higher temperature is discharged to the atmosphere. The first mode also relates to the treatment of waste flue gas and the treatment of organic tail gas released by high-temperature evaporation of wet biological sludge; a second mode relates to the off-gas treatment of the heated air. The MVR principle can be used to recover most of the energy of water evaporation by making the wet solid waste in a more solid state have the property of a more liquid state.
SUMMERY OF THE UTILITY MODEL
To the above problem, an object of the utility model is to provide a show energy-conservation, waste water cyclic utilization's solid waste drying device, can retrieve most water evaporation's energy, can obtain the moisture content and be less than 10% dry solid wastes material, more do benefit to the burning after the solid waste shaping and deal with.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the solid waste drying device comprises a solid waste conveying device, a drying cylinder and a steam compressor, wherein the solid waste conveying device is communicated with the drying cylinder. The drying cylinder is sequentially provided with an upper steam area, a heat exchange area, a lower steam area and a hot oil area which are communicated with one another from top to bottom, and a vertical tube-in-tube heat exchanger is arranged in the heat exchange area. The heat exchanger is provided with a steam inlet and a condensed water outlet, the inlet of the steam compressor is communicated with the upper steam area or the lower steam area, and the outlet is communicated with the steam inlet of the heat exchanger. The hot oil area is provided with a first liquid outlet and a second liquid outlet, the first liquid outlet is communicated with the upper steam area through an internal circulation pipeline, and a first liquid delivery pump is arranged in the middle of the internal circulation pipeline. The second liquid outlet is communicated with the upper steam area through an external circulation pipeline, and a second liquid delivery pump is arranged in the middle of the external circulation pipeline.
Furthermore, the external circulation pipeline comprises a second liquid delivery pump, a pre-heat exchanger, a solid-liquid separation device, an oil container, a third liquid delivery pump and a plurality of pipelines. And the inlet of the second liquid delivery pump is communicated with a second liquid outlet pipeline, the outlet of the second liquid delivery pump is connected to the heat release side inlet of the pre-heat exchanger through a pipeline, and the heat release side outlet of the pre-heat exchanger is communicated with the solid waste separation device pipeline. The solid waste separation device is provided with a solid discharge port and a liquid discharge port, the liquid discharge port is communicated with an oil container pipeline, an outlet of the oil container is connected to an inlet of a third liquid delivery pump, an outlet of the third liquid delivery pump is connected to a heat absorption side inlet of the pre-heat exchanger, and a heat absorption side outlet of the pre-heat exchanger is communicated with the upper steam area through a pipeline.
Furthermore, the lower part of the hot oil area is divided into an upper layer hot oil area and a lower layer hot oil area through a filter screen, the first liquid outlet is communicated with the upper layer hot oil area, and the second liquid outlet is communicated with the lower layer hot oil area. The mesh number of the filter screens is more than or equal to 10.
The upper layer hot oil area is internally provided with a stirring paddle which is beneficial to fully mixing solid waste and hot oil, and the stirring paddle is driven by a stirring motor fixedly arranged outside the drying cylinder.
Further, a sludge outlet of the solid waste conveying device is communicated with a lower steam area of the drying cylinder.
Further, the outlet of the steam compressor is communicated with the second liquid outlet of the drying cylinder through a branch pipeline and is used for stirring up wet and solid waste deposited at the bottom.
Furthermore, the heat exchanger is also provided with a tail gas discharge port for discharging non-condensable gas.
Further, the solid waste is sludge.
Further, the boiling point of the hot oil is 250-380 ℃, and preferably 300-330 ℃.
The utility model discloses following beneficial effect has: 1. the energy is obviously saved, the wet and solid wastes are dried, and the recovery utilization rate of energy is improved; 2. only a little tail gas is discharged, and the secondary pollution to the environment is small; 3. the dry solid waste separated by the solid and oil is more beneficial to combustion disposal due to the oil; 4. the dry solid waste with the water content of less than 10 percent can be obtained.
Drawings
Fig. 1 is a schematic structural diagram of the first embodiment.
Fig. 2 is a schematic structural diagram of the second embodiment.
Fig. 3 is a schematic structural diagram of the third embodiment.
Description of the main component symbols: 1. a sludge conveying device; 2. a drying cylinder; 21. an upper steam zone; 211. a liquid inlet; 212. an air extraction opening; 22. a heat exchange zone; 221. a heat exchanger; 2211. a steam inlet; 2212. a condensed water outlet; 23. a lower vapor zone; 231. an air extraction opening; 24. a hot oil zone; 241. an upper hot oil zone; 242. a lower hot oil zone; 243. a first liquid outlet; 244. a second liquid outlet; 3. a vapor compressor; 31. a branch line; 41. a first liquid delivery pump; 42. a second liquid delivery pump; 43. a third liquid delivery pump; 5. a pre-heat exchanger; 51. a heat release side inlet; 52. a heat release side outlet; 53. a heat absorption side inlet; 54. a heat absorption side outlet; 6. a sludge separation device; 61. a solids discharge port; 62. a liquid discharge port; 7. an oil container; 8. filtering with a screen; 9. and (4) a stirring paddle.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
The first embodiment is as follows:
as shown in fig. 1, a sludge drying device comprises a sludge conveying device 1, a drying cylinder 2 and a steam compressor 3, wherein the drying cylinder 2 is provided with an upper steam area 21, a heat exchange area 22, a lower steam area 23 and a hot oil area 24 which are communicated with each other from top to bottom, a heat exchanger 221 is arranged in the heat exchange area 22, and the sludge conveying device 1 is connected with the lower steam area 23. The heat exchanger 221 is provided with a steam inlet 2211 and a condensed water outlet 2212, the upper steam area 21 is provided with a pumping hole 212, an inlet of the steam compressor 3 is connected with the pumping hole 212, and an outlet is connected with the steam inlet 2211 of the heat exchanger 221.
The hot oil area 24 is provided with a first liquid outlet 243 and a second liquid outlet 244, the lower part of the hot oil area 24 is divided into an upper layer hot oil area 241 and a lower layer hot oil area 242 through the filter screen 8, the first liquid outlet 243 is communicated with the upper layer hot oil area 241, and the second liquid outlet 244 is communicated with the lower layer hot oil area 242. The upper layer hot oil area 241 is internally provided with a stirring paddle 9. The first liquid outlet 243 is connected by piping to the inlet of the first liquid delivery pump 41, and the outlet of the first liquid delivery pump 41 is connected by piping to the liquid inlet 211 of the upper vapor zone 21.
A second liquid outlet 244 is provided at the bottom of the lower hot oil zone 242, and the second liquid outlet 244 is connected to the inlet of the second liquid delivery pump 42 through a pipe. The outlet of the second liquid delivery pump 42 is connected to the heat release side inlet 51 of the pre-heat exchanger 5 through a pipeline, and the heat release side outlet 52 of the pre-heat exchanger 5 is in pipeline communication with the sludge separation device 6. The sludge separation device 6 is provided with a solid discharge port 61 and a liquid discharge port 62, the liquid discharge port 62 is communicated with the oil container 7 through a pipeline, the outlet of the oil container 7 is connected to the inlet of the third liquid delivery pump 43, the outlet of the third liquid delivery pump 43 is connected to the heat absorption side inlet 53 of the pre-heat exchanger 5, and the heat absorption side outlet 54 of the pre-heat exchanger 5 is communicated with the upper steam area 21 through a pipeline.
Example two:
as shown in fig. 2, the present embodiment is different from the first embodiment in that: the lower steam zone 23 is provided with a suction opening 231, and the inlet of the steam compressor 3 is connected to the suction opening 231. The rest of the structure is the same as the first embodiment.
Example three:
as shown in fig. 3, the present embodiment is different from the first embodiment in that: a branch pipeline 31 is arranged on the pipeline between the outlet of the steam compressor 3 and the steam inlet 2211 of the heat exchanger 221, and the branch pipeline 31 is communicated with the second liquid outlet 244 of the hot oil area 24. The rest of the structure is the same as the first embodiment.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a solid waste drying device which characterized in that: comprises a solid waste conveying device, a drying cylinder and a steam compressor, wherein the solid waste conveying device is communicated with the drying cylinder, the drying cylinder is sequentially provided with an upper steam area, a heat exchange area, a lower steam area and a hot oil area which are communicated with each other from top to bottom, a heat exchanger is arranged in the heat exchange area, the heat exchanger is provided with a steam inlet and a condensed water outlet, the inlet of the steam compressor is communicated with the upper steam area or the lower steam area, the outlet is communicated with the steam inlet of the heat exchanger, the hot oil area is provided with a first liquid outlet and a second liquid outlet, the first liquid outlet is communicated with the upper steam area through an internal circulation pipeline, the middle of the internal circulation pipeline is provided with a first liquid delivery pump, the second liquid outlet is communicated with the upper steam area through an external circulation pipeline, and the middle of the external circulation pipeline is provided with a second liquid delivery pump.
2. The solid waste drying apparatus of claim 1, wherein: the external circulation pipeline comprises a second liquid conveying pump, a pre-heat exchanger, a solid-liquid separation device, an oil container, a third liquid conveying pump and a plurality of pipelines, wherein an inlet of the second liquid conveying pump is communicated with a second liquid outlet pipeline, an outlet of the second liquid conveying pump is connected to a heat release side inlet of the pre-heat exchanger through a pipeline, a heat release side outlet of the pre-heat exchanger is communicated with a solid waste separation device pipeline, the solid waste separation device is provided with a solid discharge port and a liquid discharge port, the liquid discharge port is communicated with the oil container pipeline, an outlet of the oil container is connected to an inlet of the third liquid conveying pump, an outlet of the third liquid conveying pump is connected to a heat absorption side inlet of the pre-heat exchanger, and a heat absorption side outlet of the pre-heat exchanger is communicated with an.
3. The solid waste drying apparatus of claim 1, wherein: the lower part of the hot oil area is divided into an upper layer hot oil area and a lower layer hot oil area through a filter screen, the first liquid outlet is communicated with the upper layer hot oil area, and the second liquid outlet is communicated with the lower layer hot oil area.
4. The solid waste drying apparatus of claim 3, wherein: the upper layer hot oil area is internally provided with a stirring paddle, and the stirring paddle is driven by a stirring motor fixedly arranged outside the drying cylinder.
5. The solid waste drying apparatus of claim 1, wherein: and a sludge outlet of the solid waste conveying device is communicated with a lower steam area of the drying cylinder.
6. The solid waste drying apparatus of claim 1, wherein: the outlet of the steam compressor is communicated with the second liquid outlet of the drying cylinder through a branch pipeline.
7. The solid waste drying apparatus of claim 1, wherein: the heat exchanger is also provided with a tail gas outlet for discharging non-condensable gas.
8. The solid waste drying apparatus of claim 1, wherein: the solid waste is sludge.
9. The solid waste drying apparatus of claim 1, wherein: the boiling point of the hot oil is 250-380 ℃.
10. The solid waste drying apparatus of claim 9, wherein: the boiling point of the hot oil is 300-330 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921552802.8U CN211170400U (en) | 2019-09-18 | 2019-09-18 | Solid waste drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921552802.8U CN211170400U (en) | 2019-09-18 | 2019-09-18 | Solid waste drying device |
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| CN211170400U true CN211170400U (en) | 2020-08-04 |
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| CN201921552802.8U Active CN211170400U (en) | 2019-09-18 | 2019-09-18 | Solid waste drying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642497A (en) * | 2019-09-18 | 2020-01-03 | 厦门绿邦膜技术有限公司 | Solid waste drying device and process |
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2019
- 2019-09-18 CN CN201921552802.8U patent/CN211170400U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642497A (en) * | 2019-09-18 | 2020-01-03 | 厦门绿邦膜技术有限公司 | Solid waste drying device and process |
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