CN109626791A - Sludge drying device and sludge drying method - Google Patents
Sludge drying device and sludge drying method Download PDFInfo
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- CN109626791A CN109626791A CN201910091433.5A CN201910091433A CN109626791A CN 109626791 A CN109626791 A CN 109626791A CN 201910091433 A CN201910091433 A CN 201910091433A CN 109626791 A CN109626791 A CN 109626791A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a kind of sludge drying device and a kind of sludge drying method, the sludge drying device includes: heat pump, and the process water from sewage disposal system is admitted in the heat pump；Desiccation apparatus, sludge, which is admitted in the desiccation apparatus, carries out desiccation；Air regulating device, the air regulating device is connected to the desiccation apparatus and forms closed system, gas for dewatered sludge circulates in the closed system, the saturation generated in mud drying process evaporates moisture and enters the air regulating device from the desiccation apparatus, the air regulating device carries out removal moisture drying to saturation evaporation moisture, and the gas after removal moisture drying is heated into hot wind using the heat transferring medium that the air cooler side of the heat pump is discharged, then the hot wind is sent into the desiccation apparatus, sludge is dried.
Description
Technical field
The present invention relates to a kind of sludge drying device and a kind of sludge drying method, the technique for utilizing sewage disposal system
Water carries out desiccation to sludge.
Background technique
As the quickening of urbanization process produces a large amount of pair while urban wastewater treatment ability is substantially improved
Product --- municipal sludge, if sludge is dealt with improperly it will cause environmental pollution, for example, the percolate that sludge generates will cause
The pollution of soil and underground water, the foul gas and mud granule that sludge distributes will cause air pollution, and eventually to life
Object generates harm.Moreover, municipal sludge water content is high, volume is big, and property is unstable, is unfavorable for transport processing.
On the other hand, municipal sludge itself contains a large amount of organic matter and lignin, and calorific value is up to eight after dehydration
More than hundred kilojoules/kilogram.After sludge drying, sludge thoroughly can be effectively handled by burning mode, make sludge farthest
Minimizing, while using heat generated when burning, it converts heat into electric energy and generates electricity, realize the sharp again of resource
With.The sludge of desiccation can also be used for preparing building brick etc., or directly landfill etc..
In order to make municipal sludge effectively be handled and be realized, the resource utilization of municipal sludge, sludge drying link are
It is essential.But current drying technique needs to consume a large amount of energy, drying equipment is complicated, operation energy consumption is high, desiccation
A large amount of foul smell are generated in the process, and there are the security risks such as dust explosion.Therefore, develop more economical, more energy efficient drying technique at
For municipal sludge processing there is an urgent need to.
Summary of the invention
The object of the present invention is to provide a kind of improved sludge drying device and a kind of sludge drying methods, can pass through
Structure is simple, compact, integrated level is high sludge drying device economical and energy saving and environmentally friendly the desiccation for realizing sludge.
According to an aspect of the present invention, above-mentioned purpose is able to reality by a kind of sludge drying device according to the present invention
Existing, the sludge drying device includes:
Heat pump, the process water from sewage disposal system are admitted in the heat pump；
Desiccation apparatus, sludge, which is admitted in the desiccation apparatus, carries out desiccation；
Air regulating device, the air regulating device is connected to the desiccation apparatus and forms closed system, for doing
The gas for changing sludge circulates in the closed system, wherein realizes in the air regulating device to gas temperature
With the adjusting of humidity；
The saturation generated in mud drying process evaporates moisture and enters the air regulating device, institute from the desiccation apparatus
It states air regulating device and removal moisture drying, and changing using the discharge of the air cooler side of the heat pump is carried out to saturation evaporation moisture
Gas after removal moisture drying is heated into hot wind by thermal medium, and then the hot wind is sent into the desiccation apparatus and is carried out to sludge
It is dry.
" process water " refers to the water in sewage disposal system, each sewage treatment link of such as sewage plant, including intake,
Water in water outlet and each intermediate link.For example, containing a large amount of Lowlevel thermal energy in city domestic sewage itself, and city is dirty
Water water is stable, water temperature amplitude of variation is small, and winter, summer was highly stable heat at 30 degree or so about in or so ten several years
Source can further excavate the energy-saving potential of sewage plant using the latent heat in city domestic sewage (process water), realize sewage plant
Optimized utilizing energy.
" heat pump " is a kind of device for making thermal energy flow to high-order heat source from low level heat energy, it may include evaporator, compressor, gas
Cooler and pressure reducing valve etc..Process water is admitted in the evaporator of the heat pump, from heat after exchanging heat in evaporator with heat pump fluid
Pump outflow, after heat exchange, about 10-30 DEG C of the process water can be down to about 5-10 DEG C, and the process water of the low temperature is admitted to again
In air regulating device, removal moisture drying is carried out to the saturation evaporation moisture generated in drying process.Meanwhile it is latent to have drawn process water
The heat pump fluid of heat enters compressor, by compression pressurization at the heat pump fluid of high temperature and pressure, in air cooler with heat transferring medium, such as
Soft water heat exchange, heat transferring medium absorb the heat of the heat pump fluid of the high temperature and pressure, and temperature increases.The raised heat transferring medium of the temperature
(can be to 90 DEG C or so) can be admitted to air regulating device, be hot wind by cold air heating, be used for dewatered sludge.
The desiccation apparatus may be, for example, low temperature desiccation apparatus.
Compared with prior art, according to the present invention, the air regulating device is connected with the desiccation apparatus and is formed
Closed system, it is thus achieved that the closed Infinite Cyclic of process condensate gas, no foul smell leak in external environment, simultaneously
Recycling heat energy makes sludge water content multiple-effect evaporation；The air regulating device will using the thermal energy that heat pump is drawn from sewage
Gas is heated to be hot wind, realizes low consumption, environmental protection ground dewatered sludge.
Sludge drying device according to the present invention has the advantage that realize technique cold relative to existing drying technique
The Infinite Cyclic of solidifying gas, thermal energy recycle and the multiple-effect evaporation of sludge water content；Complete equipment using it is closed design,
Excessive without foul smell, low temperature drying is not necessarily to mud granulizing and returning charge without dust, without increasing the expensive deodorization system of secondary cost installation
System, dust pelletizing system, can be directly mounted at the plant area of sewage disposal system, centrally dispose to sludge, condensed water can be in line, nothing
Need secondary treatment；Complete equipment structure is simple and compact.
A preferred embodiment of the invention, the air regulating device can use the evaporation from the heat pump
The process water by heat exchange of device side discharge carries out removal moisture drying to saturation evaporation moisture.On the one hand pass through heat pump as a result,
The a large amount of waste heat sufficiently extracted in each stage process water of sewage disposal system carry out dewatered sludge, on the other hand also continue using in heat
Process water in pump evaporator by heat exchange carries out removal moisture drying, a whole set of sludge drying to the wet-hot steam generated in drying process
The integrated level of equipment is very high.
Preferably, the air regulating device may include condenser, be evaporated by the condenser to the saturation wet
Gas carries out removal moisture drying, and the process water of the vaporizer side discharge of the heat pump flows into the condenser, after the condenser
Discharge.
It is further preferred that the air regulating device may include multiple condensers, pass through the multiple condenser pair
The saturation evaporation moisture carries out multistage removal moisture drying, and the process water of the vaporizer side discharge of the heat pump is respectively fed to described
Multiple condensers are discharged after flowing through corresponding condenser, such as are sent back to the dry point of the process water again.Here, can basis
The demand of the items technical parameter such as sludge, water temperature calculates the quantity for the condenser that should be arranged in gas regulating system.By more
Grade dehumidifying, drying generate the sufficiently dry gas that can be used for dewatered sludge.
It is further preferred that after the air regulating device may include controller and afterbody condenser be arranged in
Sensor, the sensor are used to obtain the humidity of the gas after drying, and the controller is according to the gas after the drying
Humid control opens the valve of one or several condensers in the multiple condenser.It is further preferred that can be in afterbody
Humidity sensor is arranged in corresponding position after condenser, for detecting the gas humidity after drying.Alternatively, it may also set up temperature
Sensor, for calculating the gas humidity after drying.According to the signal of the sensor, each condensation is controlled for example, by PLC
The opening and closing of the valve of device, if the signal of the sensor shows that gas humidity is exceeded, PLC be would automatically turn on wherein
The valve of one or several condensers, the quantity and gas humidity of Open valve are closely related.
The removal moisture drying effect of saturation evaporation moisture is one of major influence factors of sludge drying, and since season becomes
Change, moisture percentage in sewage sludge is unstable etc., and reasons directly affect effect on moisture extraction.The control system of air regulating device can lead to well
The unlatching quantity of increase and decrease condenser is crossed to achieve the purpose that adjusting air humidity, guarantees the stability of product (sludge mud extraction).
Preferably, the air regulating device can also include dehumidifying pump, the dehumidifying pump connect with the condenser or
Parallel arrangement.When dehumidifying pump is connected with the condenser, the dehumidifying pump can be set before the condenser or
Later, the saturation evaporation moisture is successively by dehumidifying pump and the condenser, it is possible thereby to fully to the saturation
It evaporates moisture and carries out removal moisture drying.When dehumidifying pump is in parallel with the condenser, at least part saturation evaporation moisture warp
The condenser is crossed, another part saturation evaporation moisture is pumped by the dehumidifying.In this way, dehumidifying pump can be used as institute
State the supplement of condenser, realize saturation evaporation moisture from dividing drying.
It is further preferred that the air regulating device can also include controller and sensor, the sensor setting
After by the dehumidifying pump and the dehumidification system that constitutes of the condenser, for obtaining the humidity of the gas after removal moisture drying,
The controller adjusts the condenser according to the humid control of the gas after the removal moisture drying and/or the dehumidifying pumps.
A preferred embodiment of the invention, the air regulating device may include dehumidifying pump, by described
Dehumidifying pump carries out removal moisture drying to saturation evaporation moisture.For example, can be carried out merely with dehumidifying pump to saturation evaporation moisture
Removal moisture drying.In this way, the simpler sludge drying device of structure may be implemented.
It is also preferable that the air regulating device can also include controller and sensor, the sensor setting exists
After dehumidifying pump, for obtaining the humidity of the gas after removal moisture drying, after the controller is according to the removal moisture drying
Dehumidify pump described in the humid control of gas.
A preferred embodiment of the invention, the air regulating device may include heat exchanger, the heat exchange
Gas after the drying is heated to be hot wind by device, wherein described in the heat transferring medium of the air cooler side discharge of the heat pump flows into
In heat exchanger, the air cooler that flows through the heat exchanger, flow back to the heat pump again.In this way, can make full use of heat pump from
The heat extracted in process water.
A preferred embodiment of the invention, the heat pump can be carbon dioxide heat-pump.Carbon dioxide heat-pump
Compared to other kinds of heat pump, have many advantages, such as that high-efficient, leaving water temperature high and low temperature performance is good, environmentally friendly.Carbon dioxide heat-pump
Coefficient of performance can reach 8, i.e., the heat that heat pump provides is 8 times of the heat that electric heating generates under same power.If being sent into two
The temperature of the process water of carbonoxide heat pump is about 10-30 DEG C, then leaving water temperature of the carbon dioxide heat-pump in air cooler side can reach
70-90℃.Moreover, will not influence water quality, the water of process water because heat pump uses carbon dioxide heat-pump as medium, it will not
Influence the normal operation of sewage plant.
A preferred embodiment of the invention, the process water can be the water outlet of sewage disposal system, water inlet
Or the water handled in pilot process.
According to another aspect of the present invention, it is also proposed that a kind of sludge drying method, by preferred according to any of the above-described kind
Sludge drying device described in embodiment carries out desiccation to sludge, and the sludge drying method includes the following steps:
Process water is sent into heat pump；
Sludge is sent into desiccation apparatus；
The saturation evaporation moisture generated in mud drying process enters air regulating device from the desiccation apparatus, described
It is dehumidified using the process water being discharged from the vaporizer side of the heat pump to saturation evaporation moisture in air regulating device
It is dry, and the gas after removal moisture drying is heated to be hot wind using the heat transferring medium of the air cooler side of the heat pump, then by institute
It states and the sludge is dried in the hot wind feeding desiccation apparatus.
According to a kind of preferred embodiment of sludge drying method, the air regulating device utilizes the steaming from the heat pump
The process water for sending out the discharge of device side carries out removal moisture drying to saturation evaporation moisture.Preferably, the air regulating device can be with
Including condenser, moisture is evaporated to the saturation by the condenser and carries out removal moisture drying, the vaporizer side row of the heat pump
Process water out flows into the condenser, is discharged after the condenser.
According to another preferred embodiment of sludge drying method, the air regulating device may include dehumidifying pump, lead to
It crosses the dehumidifying pump and removal moisture drying is carried out to saturation evaporation moisture.
Above-mentioned sludge drying method uses closed sludge drying device, in the sludge drying device, the gas
Regulating device is connected with the desiccation apparatus and forms closed system, it is thus achieved that process condensate gas is closed unlimited
Circulation, no foul smell leaks in external environment, while recycling heat energy, makes sludge water content multiple-effect evaporation；Moreover, the gas
Gas is heated to be hot wind using the thermal energy that heat pump is drawn from sewage by body regulating device, realizes low consumption, the desiccation dirt of environmental protection ground
Mud.
By sludge drying method according to the present invention, process condensate gas Infinite Cyclic is realized, heat energy recycling,
Sludge water content multiple-effect evaporation；Excessive without foul smell in drying process, low temperature drying is not necessarily to mud granulizing and returning charge, is not necessarily to without dust
Increase the expensive deodoration system of secondary cost installation, dust pelletizing system, can be directly mounted at the plant area of sewage disposal system, to sludge
It is centrally disposed, condensed water can be in line, is not necessarily to secondary treatment.
Detailed description of the invention
In the following, sludge drying device according to the preferred embodiment of the present invention and sludge drying side are described in detail with reference to the accompanying drawings
Method.
Fig. 1 shows a kind of sludge drying device of preferred embodiment according to the present invention；
Fig. 2 shows the sludge drying devices of another preferred embodiment according to the present invention；
Fig. 3 shows the sludge drying device of another preferred embodiment according to the present invention；
Fig. 4 shows the sludge drying device of another preferred embodiment according to the present invention.
Specific embodiment
Fig. 1 shows a kind of a kind of preferred embodiment of sludge drying device 1 according to the present invention.The sludge drying
Equipment 1 includes heat pump 2, air regulating device 3 and desiccation apparatus 4.
In preferred embodiment described in Fig. 1, the heat pump 2 is carbon dioxide heat-pump, and carbon dioxide exists as refrigerant
It is recycled in heat pump 2.The working method of heat pump is illustratively described as follows.The carbon dioxide heat-pump 2 includes evaporator 21, compression
Machine 22, air cooler 23 and pressure reducing valve 24.About 10-30 DEG C of process water is admitted in the evaporator 21 of the heat pump 2.In evaporator
In 21, heat in the two-phase carbon dioxide working medium absorption technique water of low-temp low-pressure becomes the gas phase carbon dioxide of low-temp low-pressure
Working medium, while the technique coolant-temperature gage in evaporator 21 is reduced to 5-10 DEG C of discharge.The gas phase carbon dioxide working medium of low-temp low-pressure passes through
Overcompression machine 22 becomes the gas of high temperature and pressure after compressing, into heat transferring medium, such as soft water in air cooler 23 and air cooler 23
It exchanges heat, the heat of soft water absorption carbon dioxide working medium, its temperature can rise to 70-90 DEG C, while high temperature from 30-50 DEG C herein
The carbon dioxide working medium of high pressure is cooled down.The carbon dioxide working medium of cooling is depressured after pressure reducing valve 24 becomes the two of low-temp low-pressure
Phase carbon dioxide working medium goes successively to evaporator 21 and process water exchanges heat, and carries out subsequent cycle.
The desiccation apparatus 4 includes hothouse 41, air inlet 42, in exhaust outlet 43, the sludge of 42 opposite side of air inlet
Entrance 44 and sludge outlet 45.
The gas outlet 35 of the air regulating device 3 is connected with the air inlet 42 of the desiccation apparatus, and described dry
Makeup sets 4 exhaust outlet 43 and is connected with the air intake 36 of the air regulating device, as a result, the air regulating device 3
It is connected to the desiccation apparatus 4 and forms closed system, the saturation generated in mud drying process evaporates moisture from the desiccation
Device 4 enters the air regulating device 3, and removal moisture drying and heating are passed through in the air regulating device 3, is sent back to again
Sludge is dried into the desiccation apparatus 4.
The air regulating device 3 may include multiple concatenated condensers 31, and the quantity of condenser can be according to sludge, water
The demand of the items technical parameter such as temperature calculates.About 10-30 DEG C of process water is in the evaporator 21 of the heat pump 2 by heat exchange
Afterwards, temperature is down to about 5-10 DEG C, and the process water which reduces is admitted in the multiple condenser 31, for evaporating to saturation
Moisture carries out removal moisture drying.
The air regulating device 3 further includes humidity sensor 34 and PLC controller 33.Humidity sensor 34 is arranged most
Corresponding position after rear stage condenser.PLC controller 33 controls each condenser 31 according to the signal of humidity sensor 34
The opening and closing of valve 37.If humidity sensor 34 shows that gas humidity is exceeded, PLC controller 33 would automatically turn on it
In one or several or whole condensers valves, the quantity of Open valve can change according to the humidity of gas.
The air regulating device 3 includes that heat exchanger 32 after condenser 31 is arranged in, for will be after removal moisture drying
Cold air heating is hot wind.It is filled from about 70-90 DEG C of the soft water that 23 side of air cooler of the heat pump 2 is discharged into the gas regulation
It sets in 3 heat exchanger 32, after exchanging heat at the heat exchanger 32 with the cold wind for flowing through heat exchanger 32, and flows back to the heat pump 2
Air cooler 23.Here, cold wind is heated as hot wind.
The working method of sewage dehydration equipment shown in FIG. 1 is described as follows:
In mud drying process, sewage plant process water is admitted in heat pump 2, and the sludge of moisture content 80%-85% is sent
Enter the top of desiccation apparatus 4.
Air regulating device 3 will be located at the gas in air regulating device 3 from the latent heat extracted in process water using heat pump 2
It is heated to be hot wind.
Hot wind enters the bottom of desiccation apparatus 4, and the moisture in sludge is taken away, and becomes saturation evaporation moisture from desiccation apparatus
4 top discharge, into the gas regulating system 3, the sludge of moisture content 80%-85% moisture content after heated-air drying is near
30% hereinafter, condensed water caused by dewatered sludge is discharged from the bottom of the desiccation apparatus 4.
The saturation that 31 pairs of multiple condensers of the air regulating device 3 enter the air regulating device 3 evaporates moisture
Carry out multistage removal moisture drying, PLC controller 34 controls the valve 37 of each condenser 31 according to the signal of humidity sensor 33
It opens and closes, to provide sufficiently dry gas.Gas after removal moisture drying continues through changing for the air regulating device 3
Hot device 32, becomes 55-70 DEG C of hot wind after heat exchange here, and hot wind passes through the closed conduct of the air regulating device 3
Into sludge is dried in the desiccation apparatus 4.
In above process, it is generated in the drying of the condensed water and saturation evaporation moisture that are generated in the desiccation apparatus 4
Condensed water can uniformly be discharged into sewage treatment plant inflow mouth 6, or directly drain.Process water after heat pump 2 exchanges heat is sent back to process water
Dry point 5.
Fig. 2 shows the sludge drying devices of another preferred embodiment according to the present invention.With sludge drying shown in FIG. 1
The difference of equipment 1 is that the air regulating device 3 ' also has dehumidifying pump 38 ' in addition to condenser.For the sake of clarity, herein
Save the appended drawing reference of each component identical with Fig. 1.
The dehumidifying pump 38 ' is arranged before the multiple condenser 31 ', with the multiple 31 ' arranged in series of condenser.
The setting of sensor 34 ' is after the dehumidification system being made of the dehumidifying pump 38 ' and the multiple condenser 31 ', for obtaining
The humidity of gas after removal moisture drying.PLC controller 33 ' is according to after dehumidifying pump 38 ' and multiple 31 ' removal moisture drying of condenser
The humid control of gas opens the valve of one or several condensers and/or control in the multiple condenser and opens the dehumidifying
Pump.
Fig. 3 shows the sludge drying device of another preferred embodiment according to the present invention.With sludge drying shown in FIG. 1
The difference of equipment 1 is that the air regulating device 3 " also has dehumidifying pump 38 " in addition to condenser.For the sake of clarity, herein
Save the appended drawing reference of each component identical with Fig. 1.
In the embodiment shown in fig. 3, dehumidifying pump 38 " is arranged in parallel with the multiple condenser 31 ", from described
A part of saturation come out in desiccation apparatus evaporates moisture and enters dehumidifying pump 38 ", and another part is saturated described in evaporation moisture entrance
Multiple condensers 31 ".The setting of sensor 34 " is in the dehumidification system being made of the dehumidifying pump 38 " and the multiple condenser 31 "
Later, for obtaining the humidity of the gas after removal moisture drying.PLC controller 33 " dehumidifies according to through dehumidifying pump and multiple condensers
The humid control of gas after drying is opened the valve of one or several condensers and/or control in the multiple condenser and is opened
The dehumidifying pump 38 ".
Fig. 4 shows the sludge drying device 101 of another preferred embodiment according to the present invention.The sludge drying device
101 include heat pump 102, air regulating device 103 and desiccation apparatus 104.
The gas outlet 135 of the air regulating device 103 is connected with the air inlet 142 of the desiccation apparatus 104, and
The exhaust outlet 143 of the desiccation apparatus 104 is connected with the air intake 136 of the air regulating device again, as a result, the gas
Regulating device 103 and the desiccation apparatus 104 form closed system, and the saturation generated in mud drying process evaporates moisture from institute
It states desiccation apparatus 104 and enters the air regulating device 103, removal moisture drying is passed through in the air regulating device 103 and add
Heat is sent back in the desiccation apparatus 104 again and sludge is dried.
Different to embodiment shown in Fig. 3 from Fig. 1, the air regulating device does not recycle going out for evaporator with heat pump side
Water.The air regulating device 103 includes dehumidifying pump 138, and pumps in 138 pairs of mud drying process and generate merely with dehumidifying at this
Saturation evaporation moisture carry out removal moisture drying.Humidity sensor 134,133 basis of PLC controller are equipped with after dehumidifying pump 138
The signal control dehumidifying pump 138 of humidity sensor 134.
The working method of sewage dehydration equipment shown in Fig. 4 is described as follows:
Process water is sent into heat pump 102；
Sludge is sent into desiccation apparatus 104；
The saturation generated in mud drying process evaporates moisture and enters gas regulation dress from the desiccation apparatus 104
103 are set, 138 pairs of saturations are pumped by the dehumidifying of the air regulating device 103 in the air regulating device 103 and are evaporated
Moisture carries out removal moisture drying, and then the gas after removal moisture drying is heated at the heat exchanger 132 of the air regulating device 103
For hot wind, finally the hot wind is sent into the desiccation apparatus 104, the sludge is dried.
Above-described embodiment according to the present invention is merely exemplary, and the present invention is not limited thereto.Obviously, originally
Various changes and modifications can be made to the invention by the technical staff in field without departing from the spirit and scope of the present invention, the present invention
Also it is intended to for these modification and variations being included within the scope of the present invention.
Claims (16)
1. a kind of sludge drying device, the sludge drying device include:
Heat pump, the process water from sewage disposal system are admitted in the heat pump；
Desiccation apparatus, sludge, which is admitted in the desiccation apparatus, carries out desiccation；
Air regulating device, the air regulating device are connected to the desiccation apparatus and form closed system, dirty for desiccation
The gas of mud circulates in the closed system, wherein realizes in the air regulating device to gas temperature and wet
The adjusting of degree,
The saturation generated in mud drying process evaporates moisture and enters the air regulating device, the gas from the desiccation apparatus
Body regulating device carries out removal moisture drying to saturation evaporation moisture, and is situated between using the heat exchange that the air cooler side of the heat pump is discharged
Gas after removal moisture drying is heated into hot wind by matter, and then the hot wind is sent into the desiccation apparatus and is done to sludge
It is dry.
2. sludge drying device according to claim 1, which is characterized in that the air regulating device is utilized from the heat
The process water by heat exchange of the vaporizer side discharge of pump carries out removal moisture drying to saturation evaporation moisture.
3. sludge drying device according to claim 2, which is characterized in that the air regulating device includes condenser,
Moisture is evaporated to the saturation by the condenser and carries out removal moisture drying, the technique water flow of the vaporizer side discharge of the heat pump
Enter the condenser, be discharged after the condenser.
4. sludge drying device according to claim 3, which is characterized in that the air regulating device includes multiple condensations
Device evaporates moisture to the saturation by the multiple condenser and carries out multistage removal moisture drying, the vaporizer side row of the heat pump
Process water out is respectively fed to the multiple condenser, flow through corresponding condenser after be discharged.
5. sludge drying device according to claim 3, which is characterized in that the air regulating device include controller and
Sensor, for after obtaining removal moisture drying after the afterbody condenser that the sensor is arranged in the multiple condenser
Gas humidity, the controller opens in the multiple condenser according to the humid control of the gas after the removal moisture drying
One or several condensers valve.
6. sludge drying device according to claim 3, which is characterized in that the air regulating device further includes dehumidifying
Pump, the dehumidifying pump are arranged with the condenser serial or parallel connection.
7. sludge drying device according to claim 6, which is characterized in that the air regulating device further includes controller
And sensor, the sensor is arranged in after the dehumidification system being made of the dehumidifying pump and the condenser to be removed for obtaining
The humidity of gas after wet drying, controller condenser according to the humid control of the gas after the removal moisture drying
And/or the dehumidifying pump.
8. sludge drying device according to claim 1, which is characterized in that the air regulating device includes dehumidifying pump,
Moisture is evaporated to the saturation by dehumidifying pump and carries out removal moisture drying.
9. sludge drying device according to claim 8, which is characterized in that the air regulating device further includes controller
And sensor, sensor setting is after the dehumidifying pumps, for obtaining the humidity of the gas after removal moisture drying, the control
Device processed dehumidifies pump according to the humid control of the gas after the removal moisture drying.
10. sludge drying device according to any one of claim 1 to 9, which is characterized in that the air regulating device
Including heat exchanger, the gas after the removal moisture drying is heated to be by hot wind, the air cooler side of the heat pump by the heat exchanger
The air cooler that the heat transferring medium of discharge flows into the heat exchanger, flows through the heat exchanger, flowing back to the heat pump again.
11. sludge drying device according to any one of claim 1 to 9, which is characterized in that the heat pump is titanium dioxide
Carbon heat pump.
12. sludge drying device according to any one of claim 1 to 9, which is characterized in that the process water is sewage
The water handled in the water outlet for the treatment of plant, water inlet or pilot process.
13. a kind of sludge drying method, by the sludge drying device as described in above-mentioned any one of claims 1 to 12 to dirt
Mud carries out desiccation, and the sludge drying method includes the following steps:
Process water from sewage disposal system is sent into heat pump；
Sludge is sent into desiccation apparatus；
The saturation evaporation moisture generated in mud drying process enters air regulating device, the gas tune from the desiccation apparatus
Regulating device carries out removal moisture drying to saturation evaporation moisture, and will be dehumidified using the heat transferring medium of the air cooler side of the heat pump
Gas after drying is heated to be hot wind, then the hot wind is sent into the desiccation apparatus, the sludge is dried.
14. sludge drying method according to claim 13, which is characterized in that the air regulating device is utilized from described
The process water of the vaporizer side discharge of heat pump carries out removal moisture drying to saturation evaporation moisture.
15. sludge drying method according to claim 14, which is characterized in that the air regulating device includes condensation
Device evaporates moisture to the saturation by the condenser and carries out removal moisture drying, the technique of the vaporizer side discharge of the heat pump
Water flows into the condenser, is discharged after the condenser.
16. sludge drying method according to claim 13, which is characterized in that the air regulating device includes dehumidifying
Pump evaporates moisture to the saturation by dehumidifying pump and carries out removal moisture drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910091433.5A CN109626791B (en) | 2019-01-30 | 2019-01-30 | Sludge drying equipment and sludge drying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910091433.5A CN109626791B (en) | 2019-01-30 | 2019-01-30 | Sludge drying equipment and sludge drying method |
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| Publication Number | Publication Date |
|---|---|
| CN109626791A true CN109626791A (en) | 2019-04-16 |
| CN109626791B CN109626791B (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910091433.5A Active CN109626791B (en) | 2019-01-30 | 2019-01-30 | Sludge drying equipment and sludge drying method |
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| CN113636737A (en) * | 2021-09-06 | 2021-11-12 | 华东理工大学 | Residual sludge dewatering and drying method and device |
| CN115432903A (en) * | 2022-07-29 | 2022-12-06 | 广州赛唯热工设备有限公司 | Low-temperature sludge drying thermodynamic system |
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