CN211814102U - Wind-heat system for sludge drying - Google Patents
Wind-heat system for sludge drying Download PDFInfo
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- CN211814102U CN211814102U CN201921994722.8U CN201921994722U CN211814102U CN 211814102 U CN211814102 U CN 211814102U CN 201921994722 U CN201921994722 U CN 201921994722U CN 211814102 U CN211814102 U CN 211814102U
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- 238000001035 drying Methods 0.000 title claims abstract description 84
- 239000010802 sludge Substances 0.000 title claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000007791 dehumidification Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 206010010904 Convulsion Diseases 0.000 abstract 1
- 230000036461 convulsion Effects 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 10
- 238000011084 recovery Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model provides a wind-heat system for sludge drying, to the mud drying zone between wet feed bin and the drier storehouse, provides the mud and dries with hot-blast and establish the processing to the back return air of drying, forms closed wind-heat circulation system through the processing to the mud is dried with hot-blast providing and the back return air of drying, in be formed with hot-blast air supply end, return air convulsions end and return air processing end in the closed wind-heat circulation system. The utility model discloses a wind-heat system for sludge drying, which establishes a wind circulation structure for the upper air supply and the lower air return of the sludge in a drying area by arranging a hot air supply end matched with an air return exhaust end, and forms the establishment of a negative pressure area of the drying area by the established wind circulation structure; meanwhile, hot air for drying sludge is provided through the arranged heat pump unit, and the treatment of dried return air is established. A set of closed air-heat circulating system is established to replace the prior mechanical drying treatment means and improve the drying efficiency of the sludge.
Description
Technical Field
The utility model belongs to equipment field for the sludge drying, concretely relates to wind-heat system for sludge drying.
Background
At present, in the sludge treatment process, the water content of the sludge before drying is very high, and the water content of the residual sludge reaches 99.2 percent
99.5 percent, the water content of the sludge passing through the sludge concentration tank is still as high as 95 to 97 percent, and the water content after filter pressing is about 80 percent. In sludge treatment, the water content of sludge generally needs to be reduced and sludge drying needs to be performed, mainly because: the yield of the sludge in a sewage plant is large, and the volume of the sludge must be reduced for subsequent transportation and treatment; domestic sludge treatment is mostly carried to a refuse landfill in a landfill mode, the volume can be reduced, space can be saved for the landfill, and the sludge can be used as fertilizer and building materials after being treated and dried.
At present, the domestic sludge dewatering technology is mainly mechanical dewatering. The common mechanical sludge dewatering equipment includes centrifuge, belt filter press dewaterer, etc. the dewatering equipment is only free gap water in sludge and the dewatered sludge has water content of 75-85%. The plate-and-frame filter press has relatively high dehydration rate, but needs a matched dosing device when the plate-and-frame filter press is used, the dosing amount in the operation process is also large, the sludge drying efficiency is low, and finally the moisture content of the sludge can only reach about 60%.
The application numbers are: 201811550232.9, discloses a sludge drying system, comprising: the drying machine comprises a tank body; the tank body is externally connected with a steam pipeline and a waste gas recovery pipeline; the material conveying unit is used for conveying materials to the tank body, a drain pipe is arranged at the bottom end of the tank body, and the drain pipe is externally connected with a drain condenser; the tail gas unit comprises a vacuum pump, a cyclone dust collector and a condenser; the cyclone dust collector is arranged at the tail end of the waste gas recovery pipeline, and is provided with an air outlet pipe which is communicated with the condenser; the condenser is externally connected with a vacuum pump.
The application numbers are: 201320853330.6 discloses a "sludge drier", including mummification room and circulated air heating chamber, the mummification roof portion is equipped with hot air inlet, nearly bottom position department is equipped with circulated air export and supplementary wind entry, the bottom is equipped with the export of supplementary wind, be provided with a plurality of layers of stainless steel meshbelt formula conveying platform in the mummification room, circulated air heating chamber top is equipped with hot air exitus, the bottom is equipped with mixed wind entry, be provided with the heat exchanger of being connected with the heat source in the circulated air heating chamber, the hot air exitus of circulated air heating chamber and the hot air inlet of mummification room are through the wind channel intercommunication that is equipped with draught fan and waste discharge mouth, the circulated air export of mummification room and supplementary wind export are through the mixed wind entry intercommunication of wind channel and circulated air.
SUMMERY OF THE UTILITY MODEL
For solving the above problem, the utility model provides a wind-heat system for sludge drying through its stoving that can provide suitable temperature and humidity with hot-blastly, improves mud drying efficiency according to this, and its technical scheme specifically as follows:
the utility model provides a wind-heat system for sludge drying, to the mud drying zone between wet feed bin and the dry material storehouse, provides mud and dries with hot-blast and establish the processing to the air return after drying, its characterized in that:
the closed air-heat circulating system is formed by providing hot air for drying sludge and processing return air after drying,
a hot air supply end, a return air exhaust end and a return air treatment end are formed in the closed air-heat circulating system;
the hot air supply end is arranged above the drying area, the return air exhaust end is arranged below the drying area,
the hot air supply end is matched with the return air exhaust end, an air circulation structure for feeding and returning the sludge in the drying area is established, and the negative pressure area of the drying area is established through the established air circulation structure.
According to the utility model discloses a wind-heat system for sludge drying, its characterized in that:
providing hot air for drying sludge by the arranged heat pump unit and establishing treatment on dried return air;
the heat pump unit comprises a compressor, a condenser, a heat utilization balance processor, an electronic expansion valve and an evaporator which are sequentially arranged.
According to the utility model discloses a wind-heat system for sludge drying, its characterized in that:
the hot air supply end is provided with a blower, a flow equalizing plate and a supply pipeline for connecting the flow equalizing plate and the blower;
the air return exhaust end is connected with the air return processing end through a pipeline;
the air return end is provided with an air return fan.
According to the utility model discloses a wind-heat system for sludge drying, its characterized in that:
an upper layer crawler belt and a lower layer crawler belt for carrying sludge are formed in the drying area,
the flow equalizing plate is arranged above the upper-layer crawler;
the hot air supply end comprises a first air supply pipeline and a corresponding first air feeder which are communicated with the flow equalizing plate, and a second air supply pipeline and a corresponding second air feeder which are communicated above the lower-layer crawler;
the air return machine comprises a first air return machine and a second air return machine;
the return air processing end comprises a first return air processing end and a second return air processing end;
the first air return fan, the first air return processing end and the first air feeder are sequentially connected through a pipeline to form a first air-heat circulation loop;
and the second air return machine, the second air return processing end and the second air feeder are sequentially connected through pipelines to form a second air-heating circulation loop.
According to the utility model discloses a wind-heat system for sludge drying, its characterized in that:
the first air return machine is connected with the first air return processing end and the second air return machine;
the return air extracted by the first return air machine is partially led to the first return air processing end; the other part of the air is led to a second return air processing end through a second return air blower.
According to the utility model discloses a wind-heat system for sludge drying, its characterized in that:
the heat pump unit comprises a compressor, a first condenser, a second condenser, a heat utilization balance processor, an electronic expansion valve and an evaporator which are arranged in sequence;
the first air return fan sends the extracted return air to the evaporator for cooling and dehumidification, and cold air after cooling and dehumidification is sent to the second condenser for heat exchange to prepare hot air sent to the first air feeder;
the second air return machine sends the extracted return air to the first condenser for heat exchange to prepare hot air sent to the second air feeder.
According to the utility model discloses a wind-heat system for sludge drying, its characterized in that:
the heat pump units are two sets which are independently arranged,
the first set of heat pump unit comprises a first compressor, a first condenser, a second condenser, a first heat utilization balance processor, a first electronic expansion valve and a first evaporator which are sequentially arranged;
the second set of heat pump unit comprises a second compressor, a third condenser, a second heat utilization balance processor, a second electronic expansion valve and a second evaporator which are sequentially arranged;
the first air return fan conveys the extracted return air to the first evaporator and the second evaporator for cooling and dehumidification, and the cooled and dehumidified cold air is conveyed to the second condenser and the third condenser for heat exchange to prepare hot air conveyed to the first air feeder;
the second air return machine sends the extracted return air to the first condenser for heat exchange to prepare hot air sent to the second air feeder.
According to the utility model discloses a wind-heat system for sludge drying, its characterized in that:
a water cooler and an air-air heat exchanger are also arranged in the heat pump unit;
the return air extracted by the first return air fan passes through the water cooler and the air-air heat exchanger in sequence before being sent to the evaporator or sent to the first evaporator and the second evaporator.
The utility model discloses a wind-heat system for sludge drying, which establishes a wind circulation structure for the upper air supply and the lower air return of the sludge in a drying area by arranging a hot air supply end matched with an air return exhaust end, and forms the establishment of a negative pressure area of the drying area by the established wind circulation structure; meanwhile, hot air for drying sludge is provided through the arranged heat pump unit, and the treatment of dried return air is established. A set of closed air-heat circulating system is established to replace the prior mechanical drying treatment means and improve the drying efficiency of the sludge.
Drawings
FIG. 1 is a block diagram schematically illustrating the structure of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
The wind-heat system for sludge drying according to the present invention will be further specifically described with reference to the drawings and the embodiments.
As shown in figures 1 and 2, the wind-heat system for drying sludge provides hot air for drying sludge and establishes treatment on return air after drying aiming at a sludge drying area between a wet material bin and a dry material bin,
the closed air-heat circulating system is formed by providing hot air for drying sludge and processing return air after drying,
a hot air supply end, a return air exhaust end and a return air treatment end are formed in the closed air-heat circulating system;
the hot air supply end is arranged above the drying area, the return air exhaust end is arranged below the drying area,
the hot air supply end is matched with the return air exhaust end, an air circulation structure for feeding and returning the sludge in the drying area is established, and the negative pressure area of the drying area is established through the established air circulation structure.
Wherein,
providing hot air for drying sludge by the arranged heat pump unit and establishing treatment on dried return air;
the heat pump unit comprises a compressor, a condenser, a heat utilization balance processor, an electronic expansion valve and an evaporator which are sequentially arranged.
Wherein,
the hot air supply end is provided with a blower, a flow equalizing plate and a supply pipeline for connecting the flow equalizing plate and the blower;
the air return exhaust end is connected with the air return processing end through a pipeline;
the air return end is provided with an air return fan.
Wherein,
an upper layer crawler belt and a lower layer crawler belt for carrying sludge are formed in the drying area,
the flow equalizing plate is arranged above the upper-layer crawler;
the hot air supply end comprises a first air supply pipeline and a corresponding first air feeder which are communicated with the flow equalizing plate, and a second air supply pipeline and a corresponding second air feeder which are communicated above the lower-layer crawler;
the air return machine comprises a first air return machine and a second air return machine;
the return air processing end comprises a first return air processing end and a second return air processing end;
the first air return fan, the first air return processing end and the first air feeder are sequentially connected through a pipeline to form a first air-heat circulation loop;
and the second air return machine, the second air return processing end and the second air feeder are sequentially connected through pipelines to form a second air-heating circulation loop.
Wherein,
the first air return machine is connected with the first air return processing end and the second air return machine;
the return air extracted by the first return air machine is partially led to the first return air processing end; the other part of the air is led to a second return air processing end through a second return air blower.
Wherein,
the heat pump unit comprises a compressor, a first condenser, a second condenser, a heat utilization balance processor, an electronic expansion valve and an evaporator which are arranged in sequence;
the first air return fan sends the extracted return air to the evaporator for cooling and dehumidification, and cold air after cooling and dehumidification is sent to the second condenser for heat exchange to prepare hot air sent to the first air feeder;
the second air return machine sends the extracted return air to the first condenser for heat exchange to prepare hot air sent to the second air feeder.
Wherein,
the heat pump units are two sets which are independently arranged,
the first set of heat pump unit comprises a first compressor, a first condenser, a second condenser, a first heat utilization balance processor, a first electronic expansion valve and a first evaporator which are sequentially arranged;
the second set of heat pump unit comprises a second compressor, a third condenser, a second heat utilization balance processor, a second electronic expansion valve and a second evaporator which are sequentially arranged;
the first air return fan conveys the extracted return air to the first evaporator and the second evaporator for cooling and dehumidification, and the cooled and dehumidified cold air is conveyed to the second condenser and the third condenser for heat exchange to prepare hot air conveyed to the first air feeder;
the second air return machine sends the extracted return air to the first condenser for heat exchange to prepare hot air sent to the second air feeder.
Wherein,
a water cooler and an air-air heat exchanger are also arranged in the heat pump unit;
the return air extracted by the first return air fan passes through the water cooler and the air-air heat exchanger in sequence before being sent to the evaporator or sent to the first evaporator and the second evaporator.
Working procedure and examples
The heat pump refrigeration system has the following circulation flow:
the heat pump unit in this embodiment is composed of two sets of heat pump units, as shown in fig. 2;
the first set of heat pump units consists of a first compressor, a first condenser, a second condenser, a first heat utilization balance processor, a first electronic expansion valve and a first evaporator which are connected in sequence;
the second set of heat pump unit consists of a second compressor, a third condenser, a second heat utilization balance processor, a second electronic expansion valve and a second evaporator which are connected in sequence;
in order to better form the effect of each link, a related mechanism of a water cooler and an air-wind heat exchanger are respectively arranged at the front end of the evaporator and are used for forming sequential three-stage dehumidification with the evaporator.
The high-temperature high-pressure gas refrigerant discharged by the first compressor flows into the first condenser for primary condensation, after partial heat is released, the high-temperature high-pressure gas refrigerant flows into the second condenser for heat exchange, after the heat is released, the high-temperature high-pressure gas refrigerant flows into the first heat utilization balance processor for energy recovery, the first electronic expansion valve performs primary throttling, the liquid refrigerant after throttling flows into the first evaporator for evaporation, the air returning after sludge heating is subjected to condensation and dehumidification, the low-temperature gas refrigerant becomes the low-temperature gas refrigerant after heat absorption, and the low-temperature gas refrigerant enters the first heat utilization balance processor again for heat absorption and is sucked by the air suction port of the first compressor.
The high-temperature high-pressure gas refrigerant discharged by the second compressor flows into the third condenser for latent heat exchange, after heat is released, the high-temperature high-pressure gas refrigerant flows into the second heat utilization balance processor for energy recovery, the high-temperature high-pressure gas refrigerant flows into the second electronic expansion valve for primary throttling, the throttled liquid refrigerant flows into the second evaporator for evaporation, air returned after sludge is heated is condensed and dehumidified, the air becomes low-temperature gaseous refrigerant after heat is absorbed, and the low-temperature gaseous refrigerant enters the second heat utilization balance processor again for heat absorption and is sucked by a suction port of the second compressor.
Description of the wind circulation system:
the first air returning machine sends the moist hot air coming out of the lower-layer crawler belt to the water meter cooler for primary cooling and dehumidification, then flows into the air-air heat exchanger for secondary dehumidification, enters the first evaporator and the second evaporator for tertiary dehumidification, and then flows into the air-air heat recoverer for cold and heat recovery treatment; then send into second condenser, third condenser, the even chamber above the upper track is sent to the first forced draught blower of rethread to the wind of guaranteeing to send upper track evenly passes through upper track, and wind is through upper track stoving back, flows into lower floor's track again, is inhaled by first air return machine, so forms main loop closed circulation air system.
The second air return machine partially extracts the return air drawn into the first air return exhaust fan, then sends the return air to the first condenser, and then sends the return air to the upper part of the lower-layer crawler drying line by the second air feeder, and the return air is sucked by the second air return machine after passing through the lower-layer crawler drying line to form a closed auxiliary circulating air system.
Description of sludge operation flow:
the sludge is conveyed into a forming machine through a wet material bin by a conveying belt, the sludge is firstly broken into arches and then enters a slitting forming machine, the sludge falls onto a lower-layer track line after being cut into strips of 5mm, the lower-layer track line is conveyed to an upper-layer track line by a lifting conveying belt after being transmitted by a lower-layer variable frequency speed reducer, and the upper-layer track line is conveyed to a discharge port by an upper-layer variable frequency speed reducer and then conveyed to a dry material bin by a discharge conveying belt.
The utility model discloses a wind-heat system for sludge drying, which establishes a wind circulation structure for the upper air supply and the lower air return of the sludge in a drying area by arranging a hot air supply end matched with an air return exhaust end, and forms the establishment of a negative pressure area of the drying area by the established wind circulation structure; meanwhile, hot air for drying sludge is provided through the arranged heat pump unit, and the treatment of dried return air is established. A set of closed air-heat circulating system is established to replace the prior mechanical drying treatment means and improve the drying efficiency of the sludge.
Claims (8)
1. The utility model provides a wind-heat system for sludge drying, to the mud drying zone between wet feed bin and the dry material storehouse, provides mud and dries with hot-blast and establish the processing to the air return after drying, its characterized in that:
the closed air-heat circulating system is formed by providing hot air for drying sludge and processing return air after drying,
a hot air supply end, a return air exhaust end and a return air treatment end are formed in the closed air-heat circulating system;
the hot air supply end is arranged above the drying area, the return air exhaust end is arranged below the drying area,
the hot air supply end is matched with the return air exhaust end, an air circulation structure for feeding and returning the sludge in the drying area is established, and the negative pressure area of the drying area is established through the established air circulation structure.
2. The air heating system for sludge drying according to claim 1, characterized in that:
providing hot air for drying sludge by the arranged heat pump unit and establishing treatment on dried return air;
the heat pump unit comprises a compressor, a condenser, a heat utilization balance processor, an electronic expansion valve and an evaporator which are sequentially arranged.
3. The air heating system for sludge drying according to claim 2, characterized in that:
the hot air supply end is provided with a blower, a flow equalizing plate and a supply pipeline for connecting the flow equalizing plate and the blower;
the air return exhaust end is connected with the air return processing end through a pipeline;
the air return end is provided with an air return fan.
4. A wind-heat system for sludge drying according to claim 3, characterized in that:
an upper layer crawler belt and a lower layer crawler belt for carrying sludge are formed in the drying area,
the flow equalizing plate is arranged above the upper-layer crawler;
the hot air supply end comprises a first air supply pipeline and a corresponding first air feeder which are communicated with the flow equalizing plate, and a second air supply pipeline and a corresponding second air feeder which are communicated above the lower-layer crawler;
the air return machine comprises a first air return machine and a second air return machine;
the return air processing end comprises a first return air processing end and a second return air processing end;
the first air return fan, the first air return processing end and the first air feeder are sequentially connected through a pipeline to form a first air-heat circulation loop;
and the second air return machine, the second air return processing end and the second air feeder are sequentially connected through pipelines to form a second air-heating circulation loop.
5. The air heating system for sludge drying according to claim 4, characterized in that:
the first air return machine is connected with the first air return processing end and the second air return machine;
the return air extracted by the first return air machine is partially led to the first return air processing end; the other part of the air is led to a second return air processing end through a second return air blower.
6. The air heating system for sludge drying according to claim 4, characterized in that:
the heat pump unit comprises a compressor, a first condenser, a second condenser, a heat utilization balance processor, an electronic expansion valve and an evaporator which are arranged in sequence;
the first air return fan sends the extracted return air to the evaporator for cooling and dehumidification, and cold air after cooling and dehumidification is sent to the second condenser for heat exchange to prepare hot air sent to the first air feeder;
the second air return machine sends the extracted return air to the first condenser for heat exchange to prepare hot air sent to the second air feeder.
7. The air heating system for sludge drying according to claim 4, characterized in that:
the heat pump units are two sets which are independently arranged,
the first set of heat pump unit comprises a first compressor, a first condenser, a second condenser, a first heat utilization balance processor, a first electronic expansion valve and a first evaporator which are sequentially arranged;
the second set of heat pump unit comprises a second compressor, a third condenser, a second heat utilization balance processor, a second electronic expansion valve and a second evaporator which are sequentially arranged;
the first air return fan conveys the extracted return air to the first evaporator and the second evaporator for cooling and dehumidification, and the cooled and dehumidified cold air is conveyed to the second condenser and the third condenser for heat exchange to prepare hot air conveyed to the first air feeder;
the second air return machine sends the extracted return air to the first condenser for heat exchange to prepare hot air sent to the second air feeder.
8. A wind-heat system for sludge drying according to claim 6 or 7, characterized in that:
a water cooler and an air-air heat exchanger are also arranged in the heat pump unit;
the return air extracted by the first return air fan passes through the water cooler and the air-air heat exchanger in sequence before being sent to the evaporator or sent to the first evaporator and the second evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921994722.8U CN211814102U (en) | 2019-11-18 | 2019-11-18 | Wind-heat system for sludge drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921994722.8U CN211814102U (en) | 2019-11-18 | 2019-11-18 | Wind-heat system for sludge drying |
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| Publication Number | Publication Date |
|---|---|
| CN211814102U true CN211814102U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921994722.8U Active CN211814102U (en) | 2019-11-18 | 2019-11-18 | Wind-heat system for sludge drying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211814102U (en) |
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2019
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