CN207987007U - A kind of sludge drying system with two-stage heat pump system - Google Patents
A kind of sludge drying system with two-stage heat pump system Download PDFInfo
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- CN207987007U CN207987007U CN201721460720.1U CN201721460720U CN207987007U CN 207987007 U CN207987007 U CN 207987007U CN 201721460720 U CN201721460720 U CN 201721460720U CN 207987007 U CN207987007 U CN 207987007U
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Abstract
The utility model provides a kind of sludge drying system with two-stage heat pump system, which is characterized in that sludge drying system includes a mesh dryer and a total heat recovery system.Mesh dryer is connected with total heat recovery system by main air return pipeline.There is total heat recovery system rotary enthalpy recovery equipment, the hot side of rotary enthalpy recovery equipment to be absorbed into the heat of the hot and humid gas of total heat recovery system, and cold side is to the gas heat temperature raising after cooling and drying.Total heat recovery system has level-one heat pump system and two level heat pump system, level-one heat pump system and two level heat pump system itself form recycle heat, it supplies total heat recovery system and cooling and drying is carried out to the hot and humid gas from mesh dryer, heat up into hot drying gas body again later.Hot drying gas body is recycled for sludge drying system.
Description
Technical field
The utility model is related to total heat recovery technology, more particularly to a kind of sludge drying system with two-stage heat pump system
System.
Background technology
For the dewatered sludge of sewage treatment plant to properly dispose, it is current all Treatment of Sludge works to carry out sludge drying dehydration
The necessary link of skill.Currently, domestic widespread practice is to carry out high warm to sludge by modes such as steam heating, fume afterheats
Desiccation.High temperature heat drying has high energy consumption, dry vent gas treatment difficult, asking there are dust and odor pollution in drying process
Topic.And steam heats and fume afterheat mode dewatered sludge, is required to obtain using coal-burning boiler or gas fired-boiler required
Thermal energy is influenced by the multiple of polluting weathers such as green low-carbon environment-friendly policy and domestic haze, and popularization and application are extremely restricted.
Low temperature sludge drying technology has been developed in recent years a kind of directly heating gas to carry out sludge using electric energy
The technology of desiccation, because its drying temperature at 90 DEG C hereinafter, commonly referred to as low temperature drying technique.Traditional low temperature desiccation machine uses
Single-stage or multilevel heat pump system carry out dehumidification by condensation, but since heat pump system is operated under worst hot case, cooling load is high, heat
Pumping system type selecting is big, and the waste heat of required cooling load about 30~50% is will produce in operational process, and waste heat, which generally requires, to be passed through
Outdoor wind cooling condenser or water condenser are excluded, and a large amount of energy waste is caused.And use the heat pump of plate-fin recuperator
Dehumidify unit, since the return air gas temperature difference and humidity limit, can only recycle the gas sensible heat less than 30% or so, heat recovery efficiency
It is low, cause the cooling load into heat pump system still very high, desiccation high energy consumption, efficiency is low.
Invention content
To solve the above-mentioned problems, the utility model proposes a kind of sludge drying systems with two-stage heat pump system.This
The total heat recovery system of utility model can be by the latent heat of the hot and humid gas after dewatered sludge in sludge drying system and sensible heat
Total heat recovery improves heat recovery efficiency, reduces heat pump system cooling load, realizes more efficient, energy-efficient sludge at low temperature desiccation.
The utility model provides a kind of sludge drying system, and sludge drying system includes mesh dryer and total heat recovery system
System.Mesh dryer is connected with total heat recovery system by main air return pipeline.There is total heat recovery system rotary-type full heat to return
Device is received, the hot side of rotary enthalpy recovery equipment is absorbed into the heat of the hot and humid gas of total heat recovery system, and rotary-type full heat is returned
The cold side of device is received to the gas heat temperature raising after cooling and drying.Total heat recovery system has level-one heat pump system and two level heat pump system
System, level-one heat pump system and two level heat pump system itself form recycle heat, supply total heat recovery system, with dry to coming from guipure
The hot and humid gas of dry machine carries out cooling and drying, heats up into hot drying gas body again later；Hot drying gas body makes for sludge drying system cycle
With.
A secondary air return pipeline, secondary backwind tube are also connected in one embodiment of the utility model, on main air return pipeline
Road is provided at least one refrigerant condenser, is sent back to after so that the portion gas in main air return pipeline is directly over heat temperature raising
Mesh dryer.
In one embodiment of the utility model, it is disposed with filter device on main air return pipeline, cooling device, does
Dry device and heat riser.
In one embodiment of the utility model, filter device is set to the rotary-type total heat recovery of total heat recovery system
Before the hot side of device；Filter device includes primary filter and high efficiency particulate air filter, and the gas to entering total heat recovery system carries out
Dedusting cleans.
In one embodiment of the utility model, cooling device is arranged after the hot side of rotary enthalpy recovery equipment,
Drying device is arranged between cooling device and the cold side of rotary enthalpy recovery equipment；Drying device includes that at least one refrigerant steams
Send out device；Drying device to by gas carry out condensation drying.
In one embodiment of the utility model, heat riser is arranged after rotary enthalpy recovery equipment；Heating dress
It sets including at least one refrigerant condenser；Heat riser to by gas heat up, make the gas for sending mesh dryer back to
Temperature increases.
In one embodiment of the utility model, the quantity of at least one refrigerant evaporator is two, respectively level-one
Refrigerant evaporator and two level refrigerant evaporator are successively arranged between cooling device and the cold side of rotary enthalpy recovery equipment, with
To by gas carry out condensed in two stages drying.
In one embodiment of the utility model, the refrigerant condenser arrangement in secondary air return pipeline is set in level-one heat pump
System.
In one embodiment of the utility model, at least one refrigerant condenser in secondary air return pipeline is set as one
Grade refrigerant condenser, is connected between level-one refrigerant evaporator and level-one refrigerant condenser by level-one medium circulation pipeline, level-one
It is provided with level-one cold medium compressor and level-one refrigerant expansion valve in medium circulation pipeline, forms level-one heat pump system.
In one embodiment of the utility model, between the cold side and mesh dryer of rotary enthalpy recovery equipment
Two level refrigerant condenser is provided on main air return pipeline, it is cold by two level between two level refrigerant evaporator and two level refrigerant condenser
Matchmaker's circulation line is connected, and two level cold medium compressor and two level refrigerant expansion valve are provided in two level medium circulation pipeline, forms two
Grade heat pump system.
The beneficial effects of the utility model are, by the setting of total heat recovery system by the desiccation in sludge drying system
The sensible heat of gas is all recycled with latent heat, considers that the energy consumption of total heat recovery system, the comprehensive energy efficiency ratio needed for sludge drying still compare
The prior art improves 30% or more.
Description of the drawings
Fig. 1 is the schematic diagram of one embodiment of the sludge drying system of the utility model；
Fig. 2 is the equipment main perspective structural schematic diagram of one embodiment of the sludge drying system of the utility model.
Wherein, the reference numerals are as follows：
B mesh dryers
1 air return pipeline
11 main air return pipelines
12 secondary air return pipelines
21 primary filters
22 high efficiency particulate air filters
3 rotary enthalpy recovery equipments
4 chilled water coil surface coolers
51 level-one refrigerant evaporators
52 level-one cold medium compressors
53 level-one refrigerant condensers
54 level-one refrigerant expansion valves
55 level-one medium circulation pipelines
61 two level refrigerant evaporators
62 two level cold medium compressors
63 two level refrigerant condensers
64 two level refrigerant expansion valves
65 two level medium circulation pipelines
71 main air return pipeline wind turbines
72 secondary air return pipeline wind turbines
B01 sludge conveyers
B02 sewage sludge feed buckets
B03 mesh belt dry box bodies
B04 upper wire bands
B05 lower net bands
Specific implementation mode
Below with reference to attached drawing, specific embodiment through the invention carries out in detail technical solution provided by the present invention
Illustrate, so that those skilled in the art carry out more specific understanding to the present invention.It should be noted that following embodiment is provided
Technical solution and Figure of description only for the present invention will be described use, be not intended to limit the present invention.Below
In embodiment and attached drawing, has been omitted from and be not shown with the indirect relevant element of the present invention, step；And each interelement in attached drawing
Size relationship be only to ask and be readily understood by, it is non-limiting actual ratio.
One embodiment of the invention is described in detailed below, to be carried out specifically to technical solution provided by the present invention
It is bright, so that those skilled in the art carry out more specific understanding to the present invention.
The utility model proposes a kind of sludge drying systems using total heat recovery system.Referring to Fig. 1 and Fig. 2, Fig. 1 is
The schematic diagram of one embodiment of the sludge drying system of the utility model；Fig. 2 is the sludge drying system of the utility model
The main perspective structural schematic diagram of one embodiment.
Sludge drying system includes total heat recovery system and mesh dryer B, air return pipeline 1, main air return pipeline wind turbine 71
With secondary air return pipeline wind turbine 72.Air return pipeline 1 includes main air return pipeline 11 and secondary air return pipeline 12.Mesh dryer B and full heat
It is connected by main air return pipeline 11 between recovery system.It is also connected to a secondary air return pipeline on main air return pipeline, is filled by a heating
Postpone the mesh dryer B that directly blows back.
Main air return pipeline 11 goes out from mesh dryer B, connects primary filter 21, high efficiency particulate air filter 22, process is rotary-type
By cold water surface cooler 4 (cooling device) after the hot side of total heat recovery device 3, using two refrigerant evaporators, level-one refrigerant steams
Device 51 and two level refrigerant evaporator 61 are sent out, by the cold side of rotary enthalpy recovery equipment 3, using two level refrigerant condenser 63,
It is most followed by main air return pipeline wind turbine and sends mesh dryer B back to.In addition, two level refrigerant evaporator 61 and two level refrigerant condenser 63 it
Between by two level medium circulation pipeline 65 be connected, 65 phase of two level medium circulation pipeline, which connects, is provided with two level cold medium compressor 62
With two level refrigerant expansion valve 64, a heat pump system (two level heat pump system) is formed.
In the present embodiment, there are two refrigerant evaporator tools (level-one refrigerant evaporator 51 and two level refrigerant evaporator 61),
The two may be contained between chilled water coil surface cooler 4 and the cold side of rotary enthalpy recovery equipment 3.Wherein level-one refrigerant evaporator 51
Preceding, two level refrigerant evaporator 61 is rear.Level-one refrigerant evaporator 51 is identical as two level refrigerant evaporator 61, also belong to one by
The heat pump system (level-one heat pump system) of medium circulation pipeline connection.In this heat pump system, with level-one refrigerant evaporator 51
Corresponding level-one refrigerant condenser 53 is set on aforementioned auxiliary air return pipeline 12 (heating device i.e. above-mentioned), likewise, the two
Between be connected by level-one medium circulation pipeline 55, level-one cold medium compressor 52 is provided in level-one medium circulation pipeline 55 and level-one is cold
Matchmaker's expansion valve 54.The level-one refrigerant condenser 53 being arranged on secondary air return pipeline 12 corresponding with level-one refrigerant evaporator 51 can be with
It it is one, or multiple, the present embodiment uses one scheme.
The structure of mesh dryer B can refer to Fig. 2 in the present embodiment.As shown in the figure, mesh dryer B includes sludge
Conveying device B01, sewage sludge feed bucket 202, mesh belt dry box body B03, upper wire band B04, lower net band B05, dewatered sludge go out
Hopper (not shown), and drive the electric reducer of guipure.In the present embodiment, guipure is set as two up and down, preferably
For 1-3 items, however those skilled in the art can select fewer or more guipure item numbers, this practicality new according to actual demand
Type is not limited thereto.
Main air return pipeline wind turbine 71 is set to the position after two level refrigerant condenser 63 in total heat recovery system.Secondary return air
Pipeline wind turbine 72 is set to the top of total heat recovery system, and the setting of level-one refrigerant condenser 53 is in its lower (not shown).
In mesh dryer B, the sludge of moisture content 60~85% is sent into sewage sludge feed bucket by sludge conveyer B01
B02, subsequently into and sludge building mortion.Sludge conveyer B01 can be screw pump, plunger pump, screw conveyor or scrape
Plate conveyer, those skilled in the art can select according to actual needs.Sludge molding machine is set to the lower section of feed hopper (in figure
It is not shown).Sludge molding machine can be sludge pelletizer, shearing shaping device or pressure extrusion device etc..Sludge shapes
Device is mounted at the top of sludge mesh dryer B, and the sludge after forming is fallen by gravity on upper wire band B04.Wet mud from
One end of top layer guipure B04 starts to feed, and lower net band B05 is delivered to by electric reducer driving.Finally dry
Sludge falls into dewatered sludge discharge bucket B06 from the ends lowest level guipure B05.The end with B05 in lower net is arranged in dewatered sludge discharge bucket
End, hopper is broach hopper, can store the dewatered sludge amount of 1h or more.Sludge arch breaking apparatus and helical feed is arranged in hopper lower pyramid mouth
Device or drag conveyor.By auger conveyor or dewatered sludge is delivered to dewatered sludge feed bin with drag conveyor or sludge is packaged
Machine.The motor reducer of guipure is driven, variable-frequency governor is configured, mesh-belt operation speed and start-stop time control can be set as needed
Fixed and adjustment realizes that discharging dewatered sludge moisture content 10%~40% is continuously adjustable.Pass through main air return pipeline wind turbine 71 and secondary return air
The hot drying gas body that pipeline wind turbine 72 is sent is contacted with wet mud cross-flow, the energy evaporation in the moisture absorption hot drying gas body in sludge
It is diffused into hot drying gas body, hot drying gas body is made to become hot and humid gas.The sludge of each position of guipure with high temperature, low relative humidity
Hot drying gas body be in contact, dry surface wind speed is controllable, and dry motive force is big, and rate of drying is higher.The temperature of hot drying gas body is suitable
At 60 DEG C~75 DEG C, the temperature of hot and humid gas controls between 45 DEG C~60 DEG C for control.The flow velocity that gas is contacted with Sludge Surface
Control is in 1m/s~4m/s.Absorb sludge moisture content after hot and humid gas from mesh dryer B exit into total heat recovery system into
Row cooling dehumidification by condensation, and reheat and become hot drying gas body mesh dryer B is returned again to by circulating fan.Main air return pipeline
In portion gas enter secondary air return pipeline and be directly over after heat temperature raising and flow back to mesh dryer B, as dry gas
Supplement.
The beneficial effects of the utility model are that the sludge drying system of the utility model, total heat recovery system, exchange heat effect
Rate is high, can reach 60% or more.So that the hot and humid gas that drying sludge generates is first passed through rotary enthalpy recovery equipment 3 reduces by 60%
Heat content.Then by the cooling device of setting (chilled water coil surface cooler 4), above-mentioned heat content is further decreased 20%, offsets heat
The waste heat generated in pumping system operation process makes the air heat enthalpy drop into heat pump system as low as all dry institute calorific requirements
32%.Then it is recycled by the cooling and warming of heat pump system, the heat pump of consumption is actually needed in general heat pump refrigerating COP3.2 or more
Power is only the 10% of dry institute calorific requirement.Consider the loss of rotary enthalpy recovery equipment 3 and wind turbine, dry required synthesis energy
Effect ratio can reach 5~8, and 30% or more is improved than the prior art.
Claims (10)
1. a kind of sludge drying system with two-stage heat pump system, which is characterized in that the sludge drying system includes guipure
Drying machine and total heat recovery system；
The mesh dryer is connected with the total heat recovery system by main air return pipeline；
There is the total heat recovery system rotary enthalpy recovery equipment, the hot side of the rotary enthalpy recovery equipment to be absorbed into institute
The heat of the hot and humid gas of total heat recovery system is stated, the cold side of the rotary enthalpy recovery equipment adds the gas after cooling and drying
Heat heating；
The total heat recovery system has level-one heat pump system and two level heat pump system, the level-one heat pump system and the two level
Heat pump system itself forms recycle heat, the total heat recovery system is supplied, with to the damp-heat from the mesh dryer
Body carries out cooling and drying, heats up into hot drying gas body again later；The hot drying gas body is recycled for the sludge drying system.
2. the sludge drying system with two-stage heat pump system as described in claim 1, which is characterized in that the main backwind tube
Road is also connected to a secondary air return pipeline, is provided at least one refrigerant condenser on the pair air return pipeline, the master is made to return
Portion gas in air pipe line sends the mesh dryer back to after being directly over heat temperature raising.
3. the sludge drying system with two-stage heat pump system as claimed in claim 2, which is characterized in that the main backwind tube
Road is disposed with filter device, cooling device, drying device and heat riser.
4. the sludge drying system with two-stage heat pump system as claimed in claim 3, which is characterized in that the filter device
It is set to before the hot side of the rotary enthalpy recovery equipment of the total heat recovery system；The filter device includes just imitating
Filter and high efficiency particulate air filter, the gas to entering the total heat recovery system are dusted removal of impurities.
5. the sludge drying system with two-stage heat pump system as claimed in claim 3, which is characterized in that the cooling device
It is arranged after the hot side of the rotary enthalpy recovery equipment, the drying device is arranged in the cooling device and the runner
Between the cold side of formula total heat recovery device；The drying device includes at least one refrigerant evaporator；The drying device is to passing through
Gas carry out condensation drying.
6. the sludge drying system with two-stage heat pump system as claimed in claim 5, which is characterized in that the heat riser
It is arranged after the rotary enthalpy recovery equipment；The heat riser includes at least one refrigerant condenser；The heating dress
Set to by gas heat up, the gas temperature for making to send back to the mesh dryer increases.
7. the sludge drying system with two-stage heat pump system as claimed in claim 6, which is characterized in that described at least one
The quantity of refrigerant evaporator is two, respectively level-one refrigerant evaporator and two level refrigerant evaporator, is successively arranged described cold
But between device and the cold side of the rotary enthalpy recovery equipment, with to by gas carry out condensed in two stages drying.
8. the sludge drying system with two-stage heat pump system as claimed in claim 7, which is characterized in that be arranged in the pair
The refrigerant condenser arrangement of air return pipeline is in the level-one heat pump system.
9. the sludge drying system with two-stage heat pump system as claimed in claim 8, which is characterized in that be arranged in the pair
At least one refrigerant condenser of air return pipeline is as level-one refrigerant condenser, the level-one refrigerant evaporator and described one
It is connected by level-one medium circulation pipeline between grade refrigerant condenser, level-one refrigerant is provided in the level-one medium circulation pipeline
Compressor and level-one refrigerant expansion valve, form the level-one heat pump system.
10. the sludge drying system with two-stage heat pump system as claimed in claim 9, which is characterized in that in the runner
Two level refrigerant condenser is provided on main air return pipeline between the cold side and the mesh dryer of formula total heat recovery device, it is described
It is connected by two level medium circulation pipeline between two level refrigerant evaporator and the two level refrigerant condenser, the two level refrigerant follows
Endless tube road is provided with two level cold medium compressor and two level refrigerant expansion valve, forms the two level heat pump system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721460720.1U CN207987007U (en) | 2017-11-06 | 2017-11-06 | A kind of sludge drying system with two-stage heat pump system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721460720.1U CN207987007U (en) | 2017-11-06 | 2017-11-06 | A kind of sludge drying system with two-stage heat pump system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553270A (en) * | 2018-12-06 | 2019-04-02 | 江苏天舒电器有限公司 | A kind of pump type heat enclosed sludge drying system and its control method |
| CN110028219A (en) * | 2018-12-06 | 2019-07-19 | 江苏天舒电器有限公司 | A kind of pump type heat enclosed sludge drying system |
| CN111186979A (en) * | 2018-11-14 | 2020-05-22 | 光大水务科技发展（南京）有限公司 | Sludge drying system and sludge treatment equipment |
| CN111333304A (en) * | 2020-03-09 | 2020-06-26 | 中国环境保护集团有限公司 | Integrated treatment method and system for sludge |
| CN112747582A (en) * | 2020-12-31 | 2021-05-04 | 北京中矿博能节能科技有限公司 | Single-stage coal slime drying method |
| CN112762691A (en) * | 2020-12-31 | 2021-05-07 | 北京中矿博能节能科技有限公司 | Multistage coal slime drying method |
| CN112762663A (en) * | 2020-12-31 | 2021-05-07 | 北京中矿博能节能科技有限公司 | Single-stage multi-effect net chain closed type coal slime drying system |
| CN114230132A (en) * | 2022-02-23 | 2022-03-25 | 北京清源华建环境科技有限公司 | Energy-saving drying method of sludge drying machine |
| CN116573833A (en) * | 2023-07-10 | 2023-08-11 | 顿汉布什(中国)工业有限公司 | Sludge low-temperature drying system and method based on gradient heating of water source heat pump |
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2017
- 2017-11-06 CN CN201721460720.1U patent/CN207987007U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186979A (en) * | 2018-11-14 | 2020-05-22 | 光大水务科技发展（南京）有限公司 | Sludge drying system and sludge treatment equipment |
| CN109553270A (en) * | 2018-12-06 | 2019-04-02 | 江苏天舒电器有限公司 | A kind of pump type heat enclosed sludge drying system and its control method |
| CN110028219A (en) * | 2018-12-06 | 2019-07-19 | 江苏天舒电器有限公司 | A kind of pump type heat enclosed sludge drying system |
| CN109553270B (en) * | 2018-12-06 | 2021-11-26 | 江苏天舒电器有限公司 | Heat pump type closed sludge drying system and control method thereof |
| CN111333304A (en) * | 2020-03-09 | 2020-06-26 | 中国环境保护集团有限公司 | Integrated treatment method and system for sludge |
| CN112747582A (en) * | 2020-12-31 | 2021-05-04 | 北京中矿博能节能科技有限公司 | Single-stage coal slime drying method |
| CN112762691A (en) * | 2020-12-31 | 2021-05-07 | 北京中矿博能节能科技有限公司 | Multistage coal slime drying method |
| CN112762663A (en) * | 2020-12-31 | 2021-05-07 | 北京中矿博能节能科技有限公司 | Single-stage multi-effect net chain closed type coal slime drying system |
| CN114230132A (en) * | 2022-02-23 | 2022-03-25 | 北京清源华建环境科技有限公司 | Energy-saving drying method of sludge drying machine |
| CN116573833A (en) * | 2023-07-10 | 2023-08-11 | 顿汉布什(中国)工业有限公司 | Sludge low-temperature drying system and method based on gradient heating of water source heat pump |
| CN116573833B (en) * | 2023-07-10 | 2023-10-03 | 顿汉布什(中国)工业有限公司 | Sludge low-temperature drying system and method based on gradient heating of water source heat pump |
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Address after: 264006 No. 88, Jinsha River Road, Yantai Development Zone, Shandong Patentee after: Cecep Runda (Yantai) environmental protection Co., Ltd Address before: 264006 No. 88, Jinsha River Road, Yantai Development Zone, Shandong Patentee before: Yantai Runda Environmental Refuse Treatment Co., Ltd. |