CN108558166B - Totally-enclosed multifunctional complementary sludge drying system - Google Patents
Totally-enclosed multifunctional complementary sludge drying system Download PDFInfo
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- CN108558166B CN108558166B CN201810186110.XA CN201810186110A CN108558166B CN 108558166 B CN108558166 B CN 108558166B CN 201810186110 A CN201810186110 A CN 201810186110A CN 108558166 B CN108558166 B CN 108558166B
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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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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention discloses a totally-enclosed multi-energy complementary sludge drying system which is provided with a drying chamber, an air return chamber, an equipment chamber, a cooling tower and a solar hot water heat collector, wherein the drying chamber stores heat energy and solar energy recovered from the external environment, and the heat energy and the solar energy are utilized to dry sludge materials to be dried, so that the energy from different sources can be complemented under different working environments, the totally-enclosed multi-energy complementary sludge drying system can stably run in all weather, and the running cost is effectively reduced; in addition, the invention adopts a totally-enclosed structure of a feeding system, a drying system, a discharging system and a drainage system, the temperature of a heat source is not high, a low-temperature dehumidification process is adopted, and the recovered heat energy and solar energy are renewable energy sources, so that the drying process of the sludge material is more environment-friendly, safer, more efficient and more energy-saving. The invention has the advantages of high efficiency, stability, environmental protection, safety and flexibility.
Description
Technical Field
The invention relates to a totally-enclosed multifunctional complementary sludge drying system.
Background
The water content of the sludge in the urban sewage treatment plant is controlled to be below 60 percent, which is the lowest requirement for sludge landfill, compost and the like and is the starting point of sludge resource utilization. Although the prior technical method for drying sludge in domestic sewage treatment plants can achieve a certain drying effect, the problems of large equipment investment, high energy consumption, high operation cost or limited site and the like generally exist. Therefore, finding a high-efficiency and low-consumption sludge drying mode is a hot problem concerned by the current sewage treatment industry and a key problem which needs to be solved urgently in the sludge treatment process. Solar energy and heat pump technology are used as green clean energy and renewable energy efficient utilization technology, applied to the traditional drying industry, and can obviously reduce energy consumption, but the technology of sludge drying by combining solar energy and heat pump is still in the starting stage, and further research is needed to realize the scale application of the technology.
Among the traditional drying devices, convection drying is generally applied due to simple structure, convenient operation and strong adaptability, and is the most used drying device in the current production. The convection drying has the defects of low thermal efficiency, generally only 30-60%, and the main reason is that waste is caused by taking away waste heat by waste gas and the environment is polluted because of direct evacuation of the waste gas in the drying process. Although a part of waste heat can be recovered by adopting a part of waste gas circulation in a few convection drying processes, the waste heat is limited by the waste gas circulation amount and is generally only 20-30%. Although partial sensible heat in the exhaust gas can be recovered by using a conventional heat exchanger, 60 to 80 percent of the heat in the exhaust gas is still in the form of latent heat and is discharged. To recover the latent heat, the exhaust gas must be cooled below the dew point temperature, and the recovered latent heat must be of suitable temperature quality for reuse in the drying process. To accomplish this, a heat pump device is utilized.
The heat pump is a clean energy-saving device which utilizes low-temperature heat sources such as water, air and various residual heats. The heat pump can absorb heat from natural environment or waste heat resources to obtain more output heat energy than input energy, so that primary energy required by heating, air conditioning, hot water supply and industrial heating can be saved. The rate of application of heat pumps in industry is small compared to heat pumps for construction applications, and the application of industrial heat pumps to reduce carbon dioxide emissions would be very promising. The heat pump is the method for providing heat and cold by most effectively utilizing energy, and can well meet the drying requirement because the humidity and the temperature can be controlled to be randomly adjusted at the temperature of-20-100 ℃. Some sludge materials need to be dried at high temperature, but in the drying of many biological products, relatively low drying temperature is needed, and the heat pump can well meet the drying requirement, so the application of the heat pump has great potential. The heat pump itself does not generate heat as a boiler does, but it can raise heat from a low temperature level to a high temperature level, the temperature rise of the heat pump being the difference between its output temperature and the temperature of the heat source. Compared with the conventional convection drying, the heat pump device has the following advantages in the aspect of sludge drying: saving energy consumption, wide adjustable range of drying conditions, saving drying time, environmental protection and the like.
The solar heat pump and waste heat utilization sludge drying system can combine the advantages of low energy cost of solar heat drying operation and stable and reliable operation of the heat pump drying device. When the waste heat resources are rich and stable, external waste heat is preferentially utilized for preheating and early heating; when the solar radiation condition is good, the solar heating device can play a role as much as possible; when the weather conditions are poor, the sludge is dried by mainly utilizing electric energy through a heat pump system. Compared with the conventional air flow sludge drying, the solar energy heat pump combined waste heat utilization multi-energy complementary technology has obvious advantages in energy consumption and sludge drying cost, and becomes a novel energy-saving and environment-friendly technology.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a totally-enclosed multifunctional complementary sludge drying system.
The technical scheme adopted by the invention is as follows:
a totally-enclosed multifunctional complementary sludge drying system is characterized in that: the totally-enclosed multifunctional complementary sludge drying system is provided with a drying chamber, an air return chamber, an equipment chamber, a cooling tower and a solar hot water collector;
the system comprises a drying chamber, a normally closed gravity turning plate, a plurality of air-inducing electric valves, a centrifugal fan, a conveyor belt system, a plurality of lower air guide ports and a plurality of upper air guide ports, wherein the normally closed gravity turning plate and the plurality of air-inducing electric valves are installed at the bottom of the drying chamber, the centrifugal fan is installed at the top of the drying chamber, the conveyor belt system, the plurality of lower air guide ports and the plurality of upper air guide ports are installed in the drying chamber, the conveyor belt system can convey dried sludge materials to the normally closed gravity turning plate, and the air-inducing electric valves, the lower air guide ports: the air flowing into the upper part of the air inducing electric valve can sequentially pass through the lower air guide opening, the conveyor belt system and the upper air guide opening and then flows out of the centrifugal fan;
the top of the air return chamber is provided with an air exhaust electric valve, the bottom of the air return chamber is provided with a water outlet, and the indoor of the air return chamber is provided with an air return port, a finned tube cooler and a finned tube heater, so that: the air outlet of the centrifugal fan, the air inlet of the air exhaust electric valve and the air inlet of the air return inlet are communicated, the air outlet of the air return inlet is communicated with the air inlet of the finned tube cooler, the air outlet of the finned tube cooler is communicated with the air inlet of the finned tube heater and the condensed water outlet and is communicated with the water outlet, and the air outlet of the finned tube heater is communicated with the inside of the drying chamber at a position between the air induction electric valve and the lower air guide port;
a cold storage water tank, a chilled water circulating pump, a cooling water circulating pump, a heat storage water tank, a heating water circulating pump, a heat collecting water circulating pump and a heat pump unit are arranged in the equipment room; a water inlet and a water outlet of the cooling tower are respectively communicated with the cold accumulation water tank to form a cooling water circulation water path, and the cooling water circulation pump is arranged in the cooling water circulation water path; a cooling water inlet and a cooling water outlet of the finned tube cooler are respectively communicated with the cold accumulation water tank to form a chilled water circulation water path, and the chilled water circulation pump is arranged in the chilled water circulation water path; a water inlet and a water outlet of the solar hot water collector are respectively communicated with the heat storage water tank to form a heat collection water circulation water path, and the heat collection water circulation pump is arranged in the heat collection water circulation water path; a heating water inlet and a heating water outlet of the finned tube heater are respectively communicated with the heat storage water tank to form a heating water circulating water path, and the heating water circulating pump is installed in the heating water circulating water path; the heat pump unit can transfer the heat energy of the water contained in the cold storage water tank to the water contained in the heat storage water tank.
As a preferred embodiment of the present invention: the drying chamber, the air return chamber and the equipment chamber are preferably constructed by stainless steel plates, and the stainless steel plates are provided with heat-insulating material interlayers.
In order to prolong the retention time of the dried sludge material in the drying chamber and reduce the water content of the dried sludge material, the invention is taken as a preferred embodiment: the conveyor belt system is provided with at least two sets of conveyor belt mechanisms, each set of conveyor belt mechanism can convey the dried sludge material to the tail end of the conveyor belt mechanism from the head end of the conveyor belt mechanism, the conveyor belt mechanisms are arranged at intervals along the vertical direction, for two adjacent sets of conveyor belt mechanisms, the dried sludge material can fall to the head end of the conveyor belt mechanism below after being conveyed to the tail end of the conveyor belt mechanism by the conveyor belt mechanism above, and the dried sludge material can fall to the normally closed gravity turning plate after being conveyed to the tail end of the conveyor belt mechanism below by the conveyor belt mechanism below.
As a preferred embodiment of the present invention: the totally-enclosed multifunctional complementary sludge drying system is provided with a control chamber; a control system for controlling the fully-closed multi-energy complementary sludge drying system to work is arranged in the control chamber, and a cold storage water tank temperature sensor and a heat storage water tank temperature sensor are also arranged in the equipment chamber; the cold storage water tank temperature sensor can acquire water temperature data in the cold storage water tank, the heat storage water tank temperature sensor can acquire water temperature data in the heat storage water tank, and the control system can receive the data acquired by the cold storage water tank temperature sensor and the heat storage water tank temperature sensor in real time; and the control system is respectively and electrically connected with the control end of the induced air electric motor, the control end of the centrifugal fan, the control end of the exhaust electric motor, the control end of the air return port, the control end of the chilled water circulating pump, the control end of the cooling water circulating pump, the control end of the heating water circulating pump, the control end of the heat collecting water circulating pump, the control end of the heat pump unit, the control end of the cooling tower and the control end of the solar hot water collector.
As a preferred embodiment of the present invention: the control system can control the totally-enclosed multi-energy complementary sludge drying system to work in any one of a waste heat air drying mode, a solar energy drying mode, a heat pump heat storage mode, a mixed heat storage mode and a drying dehumidification mode:
under the waste heat air drying mode, the air inducing electric valve and the air exhausting electric valve are controlled to be opened, the air return opening is controlled to be closed, the heat pump unit, the solar hot water heat collector, the cooling tower, the cooling water circulating pump, the heat collecting water circulating pump, the heating water circulating pump and the chilled water circulating pump are controlled to be stopped, and the centrifugal fan is controlled to be started;
in the solar drying mode, closing an induced air electric valve and an exhaust electric valve, opening a return air inlet, stopping a heat pump unit, starting a centrifugal fan, and starting a solar hot water heat collector, a cooling tower, a cooling water circulating pump, a heat collecting water circulating pump, a heating water circulating pump and a chilled water circulating pump;
in the heat pump heat storage mode, the induced air electric valve and the exhaust electric valve are controlled to be closed, the air return port is controlled to be opened, the heat pump unit is controlled to be started, the centrifugal fan is controlled to be stopped, and the solar hot water heat collector, the cooling tower, the cooling water circulating pump, the heat collecting water circulating pump, the heating water circulating pump and the chilled water circulating pump are controlled to be stopped;
in the hybrid heat storage mode, the induced air electric valve and the exhaust electric valve are controlled to be closed, the air return opening is controlled to be opened, the heat pump unit, the solar hot water heat collector and the heat collecting water circulating pump are controlled to be started, the centrifugal fan is controlled to be stopped, and the cooling tower, the cooling water circulating pump, the heating water circulating pump and the chilled water circulating pump are controlled to be stopped;
and in the drying and dehumidifying mode, the air induction electric valve and the air exhaust electric valve are controlled to be closed, the air return opening is controlled to be opened, the heat pump unit, the solar hot water heat collector, the heat collecting water circulating pump, the cooling tower, the cooling water circulating pump, the heating water circulating pump and the chilled water circulating pump are controlled to be stopped, and the centrifugal fan is controlled to be started.
In order to reduce the energy consumption of sludge drying to the maximum extent, the invention adopts the following preferred embodiments:
a dry bulb temperature sensor and a relative humidity sensor are further mounted in the air return chamber and can respectively acquire dry bulb temperature data and relative humidity data at an air inlet of the finned tube cooler; the totally-enclosed multi-energy complementary sludge drying system is also provided with an external temperature sensor and a solar radiation sensor, wherein the external temperature sensor can acquire temperature data of the environment where the totally-enclosed multi-energy complementary sludge drying system is located, and the solar radiation sensor can acquire solar radiation data of the environment where the totally-enclosed multi-energy complementary sludge drying system is located; the control system can receive data collected by the dry bulb temperature sensor, the relative humidity sensor, the external temperature sensor and the solar radiation sensor in real time;
the control system is preset with a cold water temperature set value, a hot water temperature set value, an exhaust temperature set value, a relative humidity set value, an external temperature set value and a solar radiation set value; and the control system controls the totally-enclosed multifunctional complementary sludge drying system to work according to the following procedures:
step S1, judging whether the real-time temperature of the environment where the totally-enclosed multi-energy complementary sludge drying system is located is above the external temperature set value, if so, turning to step S2, and if not, turning to step S3;
s2, controlling the totally-enclosed multi-energy complementary sludge drying system to enter a waste heat air drying mode, and continuously judging whether the real-time temperature acquired by the dry bulb temperature sensor is above the set value of the exhaust temperature and the real-time relative humidity acquired by the relative humidity sensor is below the set value of the relative humidity, if so, turning to S3, otherwise, keeping at S2;
step S3, judging whether the solar radiation of the environment where the totally-enclosed multi-energy complementary sludge drying system is located is above the set value of the solar radiation, if so, turning to step S4, and if not, turning to step S6;
step S4, control totally closed complementary sludge drying system of multipotency gets into solar energy is done the mode to continuously judge whether satisfy simultaneously water real-time temperature in the cold-storage water tank is in below the cold water temperature set value just water real-time temperature in the heat storage water tank is in above the hot water temperature set value, if, then control totally closed complementary sludge drying system of multipotency gets into mummification dehumidification mode and transfer to step S1, if not, then: keeping the step S4 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is above the set value of the solar radiation, and turning to the step S5 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is less than the set value of the solar radiation;
step S5, control totally closed complementary sludge drying system of multipotency gets into mix the heat accumulation mode to whether continuously judge simultaneously and satisfy water real-time temperature in the cold-storage water tank is in below the cold water temperature set value just water real-time temperature in the heat accumulation water tank is in above the hot water temperature set value, if, then control totally closed complementary sludge drying system of multipotency gets into mummification dehumidification mode and transfer to step S1, if not, then: keeping the step S5 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is above the set value of the solar radiation, and turning to the step S6 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is less than the set value of the solar radiation;
step S6, controlling the totally-enclosed multi-energy complementary sludge drying system to enter the heat pump heat storage mode, continuously judging whether the real-time temperature of the water body in the cold storage water tank is below the cold water temperature set value and the real-time temperature of the water body in the heat storage water tank is above the hot water temperature set value, if so, controlling the totally-enclosed multi-energy complementary sludge drying system to enter the drying dehumidification mode and transfer to step S1, and if not, keeping the step S6.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the invention is provided with a drying chamber, an air return chamber, an equipment chamber, a cooling tower and a solar hot water collector, which are used for storing heat energy and solar energy recovered from the external environment and drying the dried sludge material by utilizing the heat energy and the solar energy and a heat pump, so that the energy of different sources can be complemented under different working environments, a fully-closed multi-energy complementary sludge drying system can stably run in all weather, and the running cost is effectively reduced;
in addition, the invention adopts a totally-enclosed structure of a feeding system, a drying system, a discharging system and a drainage system, the temperature of a heat source is not high, a low-temperature dehumidification process is adopted, and the recovered heat energy and solar energy are renewable energy sources, so that the drying process of the sludge material is more environment-friendly, safer, more efficient and more energy-saving.
Secondly, the control chamber, the drying chamber, the air return chamber and the equipment chamber are built by adopting the stainless steel plate with the heat-insulating material interlayer, so that the sealing, heat insulation, corrosion prevention, deodorization and safety performances of the system in the operation process can be ensured, the totally-closed multifunctional complementary sludge drying system is more complete in function, more compact in structure, more flexible in processing, production and expansion investment, and meets the requirements of matching of supply and demand sides.
Thirdly, the invention adopts at least two sets of conveyor belt mechanisms to form a conveyor belt system, which can prolong the retention time of the dried sludge material in the drying chamber so as to reduce the water content of the dried sludge material.
Fourthly, the control system is arranged in the control room, the control system can be used for controlling the fully-closed multi-energy complementary sludge drying system to work, and a hardware basis is provided for realizing the automatic control of the fully-closed multi-energy complementary sludge drying system.
Fifthly, the invention can work in any one of a waste heat air drying mode, a solar drying mode, a heat pump heat storage mode, a mixed heat storage mode and a drying and dehumidifying mode, and has the advantage of strong environmental adaptability.
Sixthly, through the process from the step S1 to the step S6, the invention can monitor the real-time temperature and the real-time relative humidity at the air inlet of the finned tube cooler, the real-time temperature of the water body in the cold storage water tank, the real-time temperature of the water body in the heat storage water tank, the real-time temperature of the environment where the totally-closed multi-energy complementary sludge drying system is located and the real-time solar radiation in real time, according to the actual conditions of the totally-enclosed multi-energy complementary sludge drying system and the environment thereof, the totally-enclosed multi-energy complementary sludge drying system is controlled to automatically switch among a waste heat air drying mode, a solar energy drying mode, a heat pump heat storage mode, a mixed heat storage mode and a drying dehumidification mode, on the premise of considering the drying efficiency of the dried sludge material, the energy consumption of sludge drying is reduced to the maximum extent, and the working process does not need manual operation or monitoring, so that the manual labor output is reduced.
Seventhly, the invention calculates the real-time return air dew point temperature, judges whether the real-time temperature of the water body in the cold accumulation water tank is lower than the real-time return air dew point temperature, and if so, stops cooling the water body in the cold accumulation water tank, can realize accurate dew point dehumidification control, and solves the problem of safe and stable operation in the sludge material drying process.
In conclusion, the invention has the advantages of high efficiency, stability, environmental protection, safety and flexibility.
Drawings
The invention is described in further detail below with reference to the following figures and specific examples:
FIG. 1 is a schematic view of a fully enclosed multi-energy complementary sludge drying system of the present invention;
FIG. 2 is a block diagram of the working process of the totally-enclosed multi-energy complementary sludge drying system of the present invention.
Detailed Description
As shown in figure 1, the invention discloses a totally-enclosed multifunctional complementary sludge drying system, which has the following inventive concept: the totally-enclosed multifunctional complementary sludge drying system is provided with a drying chamber 2, an air return chamber 3, an equipment chamber 4, a cooling tower 5 and a solar hot water heat collector 6.
The bottom of the drying chamber 2 is provided with a normally closed gravity turning plate 12 and a plurality of air-inducing electric valves 14, the top of the drying chamber 2 is provided with a centrifugal fan 17, the chamber of the drying chamber 2 is provided with a conveyor belt system, a plurality of lower air guide ports 15 and a plurality of upper air guide ports 16, the conveyor belt system can convey dried sludge materials to the normally closed gravity turning plate 12, and the air-inducing electric valves 14, the lower air guide ports 15, the conveyor belt system and the upper air guide ports 16 are sequentially arranged from bottom to top, so that: the air flowing into the upper part of the air inducing electric valve 14 can sequentially pass through the lower air guide port 15, the conveyor belt system and the upper air guide port 16 and then flows out of the centrifugal fan 17, and the normally closed gravity turnover plate 12 is automatically opened when the weight of the dried sludge falling on the normally closed gravity turnover plate reaches a set value, so that the dried sludge is output out of the drying chamber 2.
The top of the air return chamber 3 is provided with an air exhaust electric valve 19, the bottom is provided with a water outlet 23, and the chamber of the air return chamber 3 is internally provided with an air return port 18, a finned tube cooler 21 and a finned tube heater 22, so that: an air outlet of the centrifugal fan 17, an air inlet of the air exhaust electric valve 19 and an air inlet of the air return inlet 18 are communicated, an air outlet of the air return inlet 18 is communicated with an air inlet of the finned tube cooler 21, an air outlet of the finned tube cooler 21 is communicated with an air inlet of the finned tube heater 22, a condensed water outlet of the finned tube cooler 21 is communicated with a water outlet 23, and the air outlet of the finned tube heater 22 is communicated with the inside of the drying chamber 2 at a position between the air induction electric valve 14 and the lower air guide port 15.
A cold storage water tank 24, a chilled water circulating pump 27, a cooling water circulating pump 28, a heat storage water tank 25, a heating water circulating pump 29, a heat collecting water circulating pump 30 and a heat pump unit 26 are arranged in the equipment room 4; a water inlet and a water outlet of the cooling tower 5 are respectively communicated with the cold storage water tank 24 to form a cooling water circulation water path, and a cooling water circulation pump 28 is installed in the cooling water circulation water path; a cooling water inlet and a cooling water outlet of the finned tube cooler 21 are respectively communicated with the cold storage water tank 24 to form a chilled water circulation water path, and a chilled water circulation pump 27 is installed in the chilled water circulation water path; a water inlet and a water outlet of the solar hot water collector 6 are respectively communicated with the heat storage water tank 25 to form a heat collecting water circulation water path, and a heat collecting water circulation pump 30 is installed in the heat collecting water circulation water path; the heated water inlet and the heated water outlet of the finned tube heater 22 are respectively communicated with the hot water storage tank 25 to form a heated water circulation water path in which a heated water circulation pump 29 is installed; the heat pump unit 26 can transfer the heat energy of the water held in the cold storage water tank 24 to the water held in the hot storage water tank 25.
On the basis of the above inventive concept, the present invention may adopt the following preferred embodiments:
in order to prolong the retention time of the dried sludge material in the drying chamber 2 and reduce the water content of the dried sludge material, the preferred embodiment of the invention is as follows: the conveyor belt system is provided with at least two sets of conveyor belt mechanisms, each set of conveyor belt mechanism can convey the dried sludge material to the tail end of the conveyor belt mechanism from the head end of the conveyor belt mechanism, the conveyor belt mechanisms are arranged at intervals along the vertical direction, for the two adjacent sets of conveyor belt mechanisms, the dried sludge material can fall to the head end of the conveyor belt mechanism below after being conveyed to the tail end of the conveyor belt mechanism by the conveyor belt mechanism above, and the dried sludge material can fall to the normally-closed gravity turnover plate 12 after being conveyed to the tail end of the conveyor belt mechanism below by the conveyor belt mechanism below.
As a preferred embodiment of the present invention: each set of conveyor belt mechanism consists of a driving wheel, a driven wheel, a stainless steel conveyor belt 10 connected between the driving wheel and the driven wheel and a speed reduction motor 11 driving the driving wheel to rotate.
As a preferred embodiment of the present invention: the totally-enclosed multifunctional complementary sludge drying system is also provided with a discharge bin 13; the feed inlet of the discharge bin 13 is arranged below the normally closed gravity turnover plate 12.
In order to further improve the environmental protection and energy saving performance of the totally-enclosed multi-energy complementary sludge drying system, the invention is taken as a preferred embodiment: a total heat exchanger 20 is also arranged in the air return chamber 3; the air outlet of the air return port 18 is communicated with the air inlet of the finned tube cooler 21 through the total heat exchanger 20.
As a preferred embodiment of the present invention: the totally-enclosed multifunctional complementary sludge drying system is also provided with a control chamber 1; the chamber of the control chamber 1 is internally provided with a storage bin 8 and an extrusion granulator 9, and the extrusion granulator 9 can extrude the dried sludge material stored in the storage bin 8 to a conveyor belt system.
As a preferred embodiment of the present invention: the totally-enclosed multifunctional complementary sludge drying system is also provided with a spiral elevator 7; the discharge port of the spiral elevator 7 is communicated with the storage bin 8, so that the dried sludge material is conveyed to the storage bin 8 through the spiral elevator 7 to be stored.
In addition, the control chamber 1, the drying chamber 2, the air return chamber 3 and the equipment chamber 4 are preferably constructed by stainless steel plates, and the stainless steel plates are provided with heat-insulating material interlayers so as to ensure the sealing, heat insulation, corrosion prevention, deodorization and safety performances in the operation process of the system, so that the totally-closed multifunctional complementary sludge drying system has more complete functions, more compact structure and more flexible processing, production and expansion investment, and meets the requirement of matching of two sides of supply and demand.
In order to realize the automatic control of the totally-enclosed multi-energy complementary sludge drying system, the invention is taken as the preferred embodiment: a control system 31 for controlling the work of the totally-enclosed multifunctional complementary sludge drying system is arranged in the control chamber 1, and a cold storage water tank temperature sensor and a heat storage water tank temperature sensor are also arranged in the equipment chamber 4; the cold storage water tank temperature sensor can acquire water temperature data in the cold storage water tank 24, the heat storage water tank temperature sensor can acquire water temperature data in the heat storage water tank 25, and the control system 31 can receive data acquired by the cold storage water tank temperature sensor and the heat storage water tank temperature sensor in real time; the control system 31 is electrically connected to the control end of the induced air electric valve 14, the control end of the centrifugal fan 17, the control end of the exhaust electric valve 19, the control end of the air return opening 18, the control end of the chilled water circulating pump 27, the control end of the cooling water circulating pump 28, the control end of the heating water circulating pump 29, the control end of the heat collecting water circulating pump 30, the control end of the heat pump unit 26, the control end of the cooling tower 5, and the control end of the solar hot water collector 6.
As a preferred embodiment of the present invention: the control system 31 can control the totally-enclosed multi-energy complementary sludge drying system to work in any one of a waste heat air drying mode, a solar drying mode, a heat pump heat storage mode, a mixed heat storage mode and a drying and dehumidifying mode:
in the waste heat air drying mode, firstly, the air induction electric valve 14 and the air exhaust electric valve 19 are controlled to be opened, then the air return opening 18 is controlled to be closed, then the heat pump unit 26, the solar hot water heat collector 6, the cooling tower 5, the cooling water circulating pump 28, the heat collecting water circulating pump 30, the heating water circulating pump 29 and the chilled water circulating pump 27 are controlled to be stopped, and finally the centrifugal fan 17 is controlled to be started; therefore, hot dry air in the environment of the totally-enclosed multi-energy complementary sludge drying system enters the chamber of the drying chamber 2 through the air induction electric valve 14, and is guided by the lower air guide port 15 and the upper air guide port 16 to pass through the conveyor belt system and then be discharged by the air exhaust electric valve 19, so that the dried sludge material conveyed by the conveyor belt system is preheated by the heat of the hot dry air and part of moisture of the dried sludge material is evaporated away, and the evaporated moisture is discharged from the air exhaust electric valve 19, and the dried sludge material is dried by using the waste heat in the environment of the totally-enclosed multi-energy complementary sludge drying system.
In the solar drying mode, firstly, the air induction electric valve 14 and the air exhaust electric valve 19 are controlled to be closed, then the air return port 18 is controlled to be opened, secondly, the heat pump unit 26 is controlled to be stopped, secondly, the centrifugal fan 17 is controlled to be started, and finally, the solar hot water heat collector 6, the cooling tower 5, the cooling water circulating pump 28, the heat collecting water circulating pump 30, the heating water circulating pump 29 and the chilled water circulating pump 27 are controlled to be started; therefore, the drying chamber 2 is in a dehumidification state, that is, the cooling tower 5 is used for cooling the water in the cold storage water tank 24 to provide cooling water for the finned tube cooler 21, the solar hot water collector 6 is used for heating the water in the hot storage water tank 25 to provide heating water for the finned tube heater 22, so that air circulates along the paths of the lower air guide opening 15, the conveyor belt system, the upper air guide opening 16, the centrifugal fan 17, the air return opening 18, the total heat exchanger 20, the finned tube cooler 21 and the finned tube heater 22 under the action of the centrifugal fan 17, the air heated by the finned tube heater 22 evaporates moisture of dried sludge materials, the air is dehumidified by the condensation action of the finned tube cooler 21, the evaporated moisture becomes condensed water and is discharged from the water discharge opening 23, and the dehumidified air is heated by the finned tube heater 22 again, the drying of the dried sludge material by utilizing solar energy is realized.
In the heat pump heat storage mode, firstly, the air induction electric valve 14 and the air exhaust electric valve 19 are controlled to be closed, then the air return opening 18 is controlled to be opened, secondly, the heat pump unit 26 is controlled to be started, secondly, the centrifugal fan 17 is controlled to be stopped, and finally, the solar hot water heat collector 6, the cooling tower 5, the cooling water circulating pump 28, the heat collecting water circulating pump 30, the heating water circulating pump 29 and the chilled water circulating pump 27 are controlled to be stopped; therefore, the drying chamber 2 is in a heat storage state, that is, the air in the drying chamber 2 does not flow, and the heat pump unit 26 continuously reduces the temperature of the water in the cold storage water tank 24 and increases the temperature of the water in the heat storage water tank 25.
In the hybrid heat storage mode, firstly, the air induction electric valve 14 and the air exhaust electric valve 19 are controlled to be closed, then the air return opening 18 is controlled to be opened, secondly, the heat pump unit 26, the solar hot water heat collector 6 and the heat collecting water circulating pump 30 are controlled to be started, secondly, the centrifugal fan 17 is controlled to be stopped, and finally, the cooling tower 5, the cooling water circulating pump 28, the heating water circulating pump 29 and the chilled water circulating pump 27 are controlled to be stopped; therefore, the drying chamber 2 is in a heat storage state, that is, the air in the drying chamber 2 does not flow, the heat pump unit 26 continuously reduces the temperature of the water in the cold storage water tank 24 and increases the temperature of the water in the heat storage water tank 25, and the solar hot water collector 6 also continuously increases the temperature of the water in the heat storage water tank 25.
In the drying and dehumidifying mode, the air induction electric valve 14 and the air exhaust electric valve 19 are controlled to be closed, the air return opening 18 is controlled to be opened, then the heat pump unit 26, the solar hot water heat collector 6, the heat collecting water circulating pump 30, the cooling tower 5, the cooling water circulating pump 28, the heating water circulating pump 29 and the freezing water circulating pump 27 are controlled to be stopped, and finally the centrifugal fan 17 is controlled to be started; therefore, the drying chamber 2 is in a dehumidification state, that is, the low-temperature water in the cold storage water tank 24 is used for providing cooling water for the finned tube cooler 21, and the high-temperature water in the hot storage water tank 25 is used for providing heating water for the finned tube heater 22, so that air circulates along the paths of the lower air guide port 15, the conveyor belt system, the upper air guide port 16, the centrifugal fan 17, the air return port 18, the total heat exchanger 20, the finned tube cooler 21 and the finned tube heater 22 under the action of the centrifugal fan 17, the air heated by the finned tube heater 22 evaporates moisture of dried sludge materials, and the air is dehumidified by the condensation action of the finned tube cooler 21, so that the evaporated moisture becomes condensed water and is discharged from the water discharge port 23, and the dehumidified air is heated by the finned tube heater 22 again; if the water tank water body is cooled and heated by the heat pump heat storage mode before the drying dehumidification mode is started, the dried sludge material is dried by the heat pump unit 26, and if the water tank water body is cooled and heated by the mixed heat storage mode before the drying dehumidification mode is started, the dried sludge material is dried by the solar energy and the heat pump unit 26 at the same time.
The fully-closed multifunctional complementary sludge drying system can enter any one of the modes according to actual working conditions, and is taken as a preferred embodiment of the invention in order to reduce the sludge drying energy consumption to the maximum extent: a dry bulb temperature sensor Tdb and a relative humidity sensor phi are also arranged in the air return chamber 3, and the dry bulb temperature sensor Tdb and the relative humidity sensor phi can respectively acquire dry bulb temperature data and relative humidity data at an air inlet of the finned tube cooler 21; the totally-enclosed multi-energy complementary sludge drying system is also provided with an external temperature sensor and a solar radiation sensor, wherein the external temperature sensor can acquire temperature data of the environment where the totally-enclosed multi-energy complementary sludge drying system is located, and the solar radiation sensor can acquire solar radiation data of the environment where the totally-enclosed multi-energy complementary sludge drying system is located; the control system 31 can receive data collected by the dry bulb temperature sensor Tdb, the relative humidity sensor phi, the external temperature sensor and the solar radiation sensor in real time;
the control system 31 is preset with a cold water temperature set value, a hot water temperature set value, an exhaust temperature set value, a relative humidity set value, an external temperature set value and a solar radiation set value; moreover, the control system 31 controls the totally-enclosed multifunctional complementary sludge drying system to work according to the following procedures:
step S1, judging whether the real-time temperature of the environment of the totally-enclosed multi-energy complementary sludge drying system is above an external temperature set value, if so, turning to step S2, and if not, turning to step S3;
step S2, controlling the totally-enclosed multi-energy complementary sludge drying system to enter a waste heat air drying mode, and continuously judging whether the real-time temperature acquired by a dry bulb temperature sensor Tdb is above an exhaust temperature set value and the real-time relative humidity acquired by a relative humidity sensor phi is below a relative humidity set value, if so, turning to step S3, otherwise, keeping at step S2;
step S3, judging whether the solar radiation of the environment where the totally-enclosed multi-energy complementary sludge drying system is located is above a set value of the solar radiation, if so, turning to step S4, and if not, turning to step S6;
step S4, the totally-enclosed multi-energy complementary sludge drying system is controlled to enter a solar drying mode, whether the real-time temperature of the water body in the cold storage water tank 24 is below a cold water temperature set value and the real-time temperature of the water body in the heat storage water tank 25 is above a hot water temperature set value are continuously judged, if yes, the totally-enclosed multi-energy complementary sludge drying system is controlled to enter a drying dehumidification mode, and the step S1 is carried out, if not, the steps: keeping the step S4 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is above the set value of the solar radiation, and turning to the step S5 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is less than the set value of the solar radiation;
step S5, the totally-enclosed multi-energy complementary sludge drying system is controlled to enter a mixed heat storage mode, whether the real-time temperature of the water body in the cold storage water tank 24 is below the set value of the cold water temperature and the real-time temperature of the water body in the heat storage water tank 25 is above the set value of the hot water temperature are simultaneously judged, if yes, the totally-enclosed multi-energy complementary sludge drying system is controlled to enter a drying dehumidification mode, and the step S1 is carried out, if not, the steps: keeping the step S5 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is above the set value of the solar radiation, and turning to the step S6 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is less than the set value of the solar radiation;
and S6, controlling the totally-enclosed multi-energy complementary sludge drying system to enter a heat pump heat storage mode, continuously judging whether the real-time temperature of the water body in the cold storage water tank 24 is below a cold water temperature set value and the real-time temperature of the water body in the heat storage water tank 25 is above a hot water temperature set value, if so, controlling the totally-enclosed multi-energy complementary sludge drying system to enter a drying dehumidification mode, and transferring to S1, otherwise, keeping at S6.
Therefore, the invention controls the fully-closed multi-energy complementary sludge drying system to automatically switch among a waste heat air drying mode, a solar energy drying mode, a heat pump heat storage mode, a mixed heat storage mode and a drying dehumidification mode according to the actual conditions of the fully-closed multi-energy complementary sludge drying system and the environment thereof by monitoring the real-time temperature and the real-time relative humidity at the air inlet of the finned tube cooler 21, the real-time temperature of the water body in the cold storage water tank 24, the real-time temperature of the water body in the heat storage water tank 25, the real-time temperature of the environment where the fully-closed multi-energy complementary sludge drying system is located and the real-time solar radiation in real time, and reduces the energy consumption of sludge drying to the maximum extent on the premise of considering the drying efficiency of the dried.
In addition, the control system 31 can also calculate the real-time return air dew point temperature through the real-time temperature acquired by the dry bulb temperature sensor Tdb and the real-time relative humidity acquired by the relative humidity sensor phi so as to judge whether the real-time temperature of the water body in the cold storage water tank 24 is lower than the real-time return air dew point temperature, if so, the water body in the cold storage water tank 24 can be stopped being cooled, so that the dew point dehumidification can be accurately controlled, and the safe and stable operation problem of the sludge material drying process is solved.
The present invention is not limited to the above embodiments, and various other equivalent modifications, substitutions and alterations can be made without departing from the basic technical concept of the invention as described above, according to the common technical knowledge and conventional means in the field.
Claims (3)
1. A totally-enclosed multifunctional complementary sludge drying system is characterized in that: the totally-enclosed multifunctional complementary sludge drying system is provided with a drying chamber (2), an air return chamber (3), an equipment chamber (4), a cooling tower (5) and a solar hot water heat collector (6);
the drying device is characterized in that a normally closed gravity turning plate (12) and a plurality of air induction electric valves (14) are installed at the bottom of the drying chamber (2), a centrifugal fan (17) is installed at the top of the drying chamber (2), a conveyor belt system, a plurality of lower air guide ports (15) and a plurality of upper air guide ports (16) are installed in the drying chamber (2), the conveyor belt system can convey dried sludge materials to the normally closed gravity turning plate (12), and the air induction electric valves (14), the lower air guide ports (15), the conveyor belt system and the upper air guide ports (16) are sequentially arranged from bottom to top, so that: the air flowing into the upper part of the air inducing electric valve (14) can sequentially pass through the lower air guide opening (15), the conveyor belt system and the upper air guide opening (16) and then flows out of the centrifugal fan (17);
an exhaust electric valve (19) is installed at the top of the air return chamber (3), a water outlet (23) is installed at the bottom of the air return chamber, and an air return opening (18), a finned tube cooler (21) and a finned tube heater (22) are installed in the air return chamber (3), so that: an air outlet of the centrifugal fan (17), an air inlet of the air exhaust electric valve (19) and an air inlet of the air return port (18) are communicated, an air outlet of the air return port (18) is communicated with an air inlet of the finned tube cooler (21), an air outlet of the finned tube cooler (21) is communicated with an air inlet of the finned tube heater (22), a condensed water outlet of the finned tube cooler (21) is communicated with the water outlet (23), and an air outlet of the finned tube heater (22) is communicated with the inside of the drying chamber (2) at a position between the air induction electric valve (14) and the lower air guide port (15);
a cold storage water tank (24), a chilled water circulating pump (27), a cooling water circulating pump (28), a heat storage water tank (25), a heating water circulating pump (29), a heat collection water circulating pump (30) and a heat pump unit (26) are arranged in the equipment room (4); a water inlet and a water outlet of the cooling tower (5) are respectively communicated with the cold accumulation water tank (24) to form a cooling water circulation water path, and the cooling water circulation pump (28) is arranged in the cooling water circulation water path; a cooling water inlet and a cooling water outlet of the finned tube cooler (21) are respectively communicated with the cold accumulation water tank (24) to form a chilled water circulation water path, and the chilled water circulation pump (27) is arranged in the chilled water circulation water path; a water inlet and a water outlet of the solar hot water collector (6) are respectively communicated with the heat storage water tank (25) to form a heat collecting water circulation water path, and the heat collecting water circulation pump (30) is arranged in the heat collecting water circulation water path; a heating water inlet and a heating water outlet of the finned tube heater (22) are respectively communicated with the heat storage water tank (25) to form a heating water circulating water path, and the heating water circulating pump (29) is installed in the heating water circulating water path; the heat pump unit (26) can transfer the heat energy of the water contained in the cold storage water tank (24) to the water contained in the heat storage water tank (25);
the totally-enclosed multifunctional complementary sludge drying system is also provided with a control chamber (1); a control system (31) for controlling the fully-closed multi-energy complementary sludge drying system to work is arranged in the control chamber (1), and a cold storage water tank temperature sensor and a heat storage water tank temperature sensor are also arranged in the equipment chamber (4); the cold storage water tank temperature sensor can acquire water temperature data in the cold storage water tank (24), the heat storage water tank temperature sensor can acquire water temperature data in the heat storage water tank (25), and the control system (31) can receive the data acquired by the cold storage water tank temperature sensor and the heat storage water tank temperature sensor in real time; the control system (31) is respectively electrically connected with the control end of the air induction electric valve (14), the control end of the centrifugal fan (17), the control end of the air exhaust electric valve (19), the control end of the air return opening (18), the control end of the chilled water circulating pump (27), the control end of the cooling water circulating pump (28), the control end of the heating water circulating pump (29), the control end of the heat collecting water circulating pump (30), the control end of the heat pump unit (26), the control end of the cooling tower (5) and the control end of the solar hot water heat collector (6);
the control system (31) can control the totally-enclosed multi-energy complementary sludge drying system to work in any one of a waste heat air drying mode, a solar energy drying mode, a heat pump heat storage mode, a mixed heat storage mode and a drying and dehumidifying mode:
in the waste heat air drying mode, the air induction electric valve (14) and the air exhaust electric valve (19) are controlled to be opened, the air return opening (18) is controlled to be closed, the heat pump unit (26), the solar hot water heat collector (6), the cooling tower (5), the cooling water circulating pump (28), the heat collecting water circulating pump (30), the heating water circulating pump (29) and the chilled water circulating pump (27) are controlled to be stopped, and the centrifugal fan (17) is controlled to be started;
in the solar drying mode, an induced air electric valve (14) and an exhaust electric valve (19) are controlled to be closed, the air return opening (18) is controlled to be opened, the heat pump unit (26) is controlled to be stopped, the centrifugal fan (17) is controlled to be started, and the solar hot water heat collector (6), the cooling tower (5), the cooling water circulating pump (28), the heat collecting water circulating pump (30), the heating water circulating pump (29) and the chilled water circulating pump (27) are controlled to be started;
in the heat pump heat storage mode, the air induction electric valve (14) and the air exhaust electric valve (19) are controlled to be closed, the air return opening (18) is controlled to be opened, the heat pump unit (26) is controlled to be started, the centrifugal fan (17) is controlled to be stopped, and the solar hot water heat collector (6), the cooling tower (5), the cooling water circulating pump (28), the heat collecting water circulating pump (30), the heating water circulating pump (29) and the chilled water circulating pump (27) are controlled to be stopped;
in the hybrid heat storage mode, the air induction electric valve (14) and the air exhaust electric valve (19) are controlled to be closed, the air return opening (18) is controlled to be opened, the heat pump unit (26), the solar hot water heat collector (6) and the heat collecting water circulating pump (30) are controlled to be started, the centrifugal fan (17) is controlled to be stopped, and the cooling tower (5), the cooling water circulating pump (28), the heating water circulating pump (29) and the chilled water circulating pump (27) are controlled to be stopped;
in the drying and dehumidifying mode, the air induction electric valve (14) and the air exhaust electric valve (19) are controlled to be closed, the air return opening (18) is controlled to be opened, the heat pump unit (26), the solar hot water collector (6), the heat collecting water circulating pump (30), the cooling tower (5), the cooling water circulating pump (28), the heating water circulating pump (29) and the chilled water circulating pump (27) are controlled to be stopped, and the centrifugal fan (17) is controlled to be started;
a dry bulb temperature sensor (Tdb) and a relative humidity sensor (phi) are further mounted in the air return chamber (3) and can respectively acquire dry bulb temperature data and relative humidity data at an air inlet of the finned tube cooler (21); the totally-enclosed multi-energy complementary sludge drying system is also provided with an external temperature sensor and a solar radiation sensor, wherein the external temperature sensor can acquire temperature data of the environment where the totally-enclosed multi-energy complementary sludge drying system is located, and the solar radiation sensor can acquire solar radiation data of the environment where the totally-enclosed multi-energy complementary sludge drying system is located; the control system (31) can receive data collected by the dry bulb temperature sensor (Tdb), the relative humidity sensor (phi), the external temperature sensor and the solar radiation sensor in real time;
a cold water temperature set value, a hot water temperature set value, an exhaust temperature set value, a relative humidity set value, an external temperature set value and a solar radiation set value are preset in the control system (31); and the control system (31) controls the totally-enclosed multi-energy complementary sludge drying system to work according to the following procedures:
step S1, judging whether the real-time temperature of the environment where the totally-enclosed multi-energy complementary sludge drying system is located is above the external temperature set value, if so, turning to step S2, and if not, turning to step S3;
step S2, controlling the totally-enclosed multi-energy complementary sludge drying system to enter a waste heat air drying mode, and continuously judging whether the real-time temperature acquired by the dry bulb temperature sensor (Tdb) is above the set value of the exhaust temperature and the real-time relative humidity acquired by the relative humidity sensor (phi) is below the set value of the relative humidity at the same time, if so, turning to step S3, otherwise, keeping at step S2;
step S3, judging whether the solar radiation of the environment where the totally-enclosed multi-energy complementary sludge drying system is located is above the set value of the solar radiation, if so, turning to step S4, and if not, turning to step S6;
step S4, control totally closed complementary sludge drying system of multipotency gets into the solar energy mode of drying to whether continuously judge satisfies simultaneously water real-time temperature in cold-storage water tank (24) is in below the cold water temperature set value just water real-time temperature in heat-storage water tank (25) is in above the hot water temperature set value, if, then control totally closed complementary sludge drying system of multipotency gets into the mummification dehumidification mode and transfer to step S1, if not, then: keeping the step S4 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is above the set value of the solar radiation, and turning to the step S5 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is less than the set value of the solar radiation;
step S5, control totally closed multipotency complementary sludge drying system gets into mix the heat accumulation mode to whether continuously judge simultaneously and satisfy water real-time temperature in cold-storage water tank (24) is in below the cold water temperature set value just water real-time temperature in heat-storage water tank (25) is in above the hot water temperature set value, if, then control totally closed multipotency complementary sludge drying system gets into the mummification dehumidification mode and go to step S1, if not, then: keeping the step S5 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is above the set value of the solar radiation, and turning to the step S6 under the condition that the solar radiation of the environment of the totally-enclosed multi-energy complementary sludge drying system is less than the set value of the solar radiation;
step S6, controlling the totally-enclosed multi-energy complementary sludge drying system to enter a heat pump heat storage mode, and continuously judging whether the real-time temperature of the water body in the cold storage water tank (24) is below the set value of the cold water temperature and the real-time temperature of the water body in the heat storage water tank (25) is above the set value of the hot water temperature, if so, controlling the totally-enclosed multi-energy complementary sludge drying system to enter the drying dehumidification mode and transferring to step S1, and if not, keeping in step S6;
the drying chamber (2), the air return chamber (3) and the equipment chamber (4) are all constructed by stainless steel plates, and the stainless steel plates are provided with heat-insulating material interlayers.
2. The fully-closed multi-energy complementary sludge drying system according to claim 1, wherein: the conveyor belt system is provided with at least two sets of conveyor belt mechanisms, each set of conveyor belt mechanism can convey the dried sludge material to the tail end of the conveyor belt mechanism from the head end of the conveyor belt mechanism, the conveyor belt mechanisms are arranged at intervals along the vertical direction, for two adjacent sets of conveyor belt mechanisms, the dried sludge material can be conveyed to the tail end of the conveyor belt mechanism by the conveyor belt mechanism positioned above and then fall to the head end of the conveyor belt mechanism positioned below, and the dried sludge material can be conveyed to the tail end of the conveyor belt mechanism positioned at the lowest position by the conveyor belt mechanism positioned at the lowest position and then fall to the normally closed gravity turnover plate (12).
3. The fully-closed multi-energy complementary sludge drying system according to claim 1, wherein: the control system (31) also calculates the real-time return air dew point temperature through the real-time temperature acquired by the dry bulb temperature sensor (Tdb) and the real-time relative humidity acquired by the relative humidity sensor (phi) so as to judge whether the real-time temperature of the water body in the cold storage water tank (24) is lower than the real-time return air dew point temperature, and if so, the cooling of the water body in the cold storage water tank (24) is stopped.
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| CN2017104837803 | 2017-06-23 | ||
| CN201710483780.3A CN107216013A (en) | 2017-06-23 | 2017-06-23 | A kind of totally-enclosed sludge drying system of providing multiple forms of energy to complement each other |
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| CN108558166A CN108558166A (en) | 2018-09-21 |
| CN108558166B true CN108558166B (en) | 2020-08-14 |
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| CN201710483780.3A Pending CN107216013A (en) | 2017-06-23 | 2017-06-23 | A kind of totally-enclosed sludge drying system of providing multiple forms of energy to complement each other |
| CN201810186096.3A Active CN108558165B (en) | 2017-06-23 | 2018-03-07 | Automatic totally-enclosed multifunctional complementary sludge drying equipment |
| CN201820313697.1U Active CN208087458U (en) | 2017-06-23 | 2018-03-07 | Totally-enclosed sludge drying system of providing multiple forms of energy to complement each other with high-environmental energy saving |
| CN201820311554.7U Active CN208087456U (en) | 2017-06-23 | 2018-03-07 | The totally-enclosed sludge drying system of providing multiple forms of energy to complement each other of dewatered sludge water content can be reduced |
| CN201820313695.2U Active CN208362156U (en) | 2017-06-23 | 2018-03-07 | Based on the totally enclosed type mud drying device provided multiple forms of energy to complement each other |
| CN201810186110.XA Active CN108558166B (en) | 2017-06-23 | 2018-03-07 | Totally-enclosed multifunctional complementary sludge drying system |
| CN201820312042.2U Active CN208087457U (en) | 2017-06-23 | 2018-03-07 | It is a kind of to be easily manipulated the totally-enclosed sludge drying system of providing multiple forms of energy to complement each other used |
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| CN201810186096.3A Active CN108558165B (en) | 2017-06-23 | 2018-03-07 | Automatic totally-enclosed multifunctional complementary sludge drying equipment |
| CN201820313697.1U Active CN208087458U (en) | 2017-06-23 | 2018-03-07 | Totally-enclosed sludge drying system of providing multiple forms of energy to complement each other with high-environmental energy saving |
| CN201820311554.7U Active CN208087456U (en) | 2017-06-23 | 2018-03-07 | The totally-enclosed sludge drying system of providing multiple forms of energy to complement each other of dewatered sludge water content can be reduced |
| CN201820313695.2U Active CN208362156U (en) | 2017-06-23 | 2018-03-07 | Based on the totally enclosed type mud drying device provided multiple forms of energy to complement each other |
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| CN108689579A (en) * | 2018-07-04 | 2018-10-23 | 上海历飞实业有限公司 | A kind of continuous compound catenary mud drying device |
| 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 |
| CN109399891B (en) * | 2018-12-28 | 2024-03-12 | 浙江天行健水务有限公司 | Energy-saving belt type sludge low-temperature drying device |
| CN110395875A (en) * | 2019-08-21 | 2019-11-01 | 东北大学 | A kind of novel sludge dry system and method |
| CN110981150A (en) * | 2019-10-29 | 2020-04-10 | 广东申菱环境系统股份有限公司 | Cold and heat source system for sludge drying |
| CN112430133A (en) * | 2020-12-13 | 2021-03-02 | 西安国祯环保工程有限公司 | Simple and easy sludge treatment tower gravity turns over board aggregate unit |
| CN116425398A (en) * | 2023-06-15 | 2023-07-14 | 水发合众清源(北京)环境科技有限公司 | Solar heat pump electroosmosis multifunctional complementary sludge drying system |
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| KR20110133098A (en) * | 2010-06-04 | 2011-12-12 | 김미순 | Solar energy and high temperature hybrid system sludge drying system |
| CN101891363B (en) * | 2010-07-08 | 2013-01-23 | 上海凡清环境工程有限公司 | Sludge air drying method and system |
| CN103482838B (en) * | 2012-06-13 | 2014-12-31 | 中国科学院理化技术研究所 | Solar heat pump combined sludge drying system and drying method |
| CN204356212U (en) * | 2014-12-26 | 2015-05-27 | 杨志成 | A kind of belt drying plant and sludge drying system |
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| CN108558166A (en) | 2018-09-21 |
| CN108558165B (en) | 2020-08-14 |
| CN107216013A (en) | 2017-09-29 |
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