CN203653407U - Energy-saving sludge drying device using solar energy and afterheat - Google Patents

Energy-saving sludge drying device using solar energy and afterheat Download PDF

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Publication number
CN203653407U
CN203653407U CN201420005941.XU CN201420005941U CN203653407U CN 203653407 U CN203653407 U CN 203653407U CN 201420005941 U CN201420005941 U CN 201420005941U CN 203653407 U CN203653407 U CN 203653407U
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sludge
energy
mud
sludge drying
saving
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Expired - Fee Related
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CN201420005941.XU
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Chinese (zh)
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冯普
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冯普
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

The utility model discloses an energy-saving sludge drying device using solar energy and afterheat. The energy-saving sludge drying device comprises a wet sludge bin, a sludge evaporator, a water feeding tank, a hot water tank, a solar heat collector, an electric heater, a waste gas spraying tower, an adsorber, a cyclone separator, a driving device, a rotary sludge drier, a dry sludge bin, an afterheat boiler and a waste gas burner, wherein a feeding conveyor is arranged between the wet sludge bin and the sludge evaporator, the feeding conveyor is arranged between the sludge evaporator and the rotary sludge drier, and an upender is arranged inside the sludge evaporator. According to the energy-saving sludge drying device, solar energy and afterheat are used for indirectly heating and evaporating sludge; as an evaporated waste gas closed-circuit circulation system is used, the water content of the sludge can be further reduced. The energy-saving sludge drying device has the characteristics of being efficient, energy-saving and high in automation degree, and effectively avoiding secondary pollution.

Description

A kind of energy-saving sludge drying device that utilizes sun power and waste heat
Technical field
The utility model relates to a kind of energy-saving sludge drying device that utilizes sun power and waste heat, belongs to environmental protection technical field of sludge treatment.
Background technology
Along with the quantity discharged of urban industry waste water and sanitary sewage is increasing, treatment rate of domestic sewage also improves year by year, and the sludge yield of municipal sewage plant also sharply increases.A large amount of excess sludges will discharge in sewage work, and the mud of enormous amount need to do further processing, if mud can not get reasonable processing, will cause secondary pollution.General city domestic sewage factory or waste plant all produce a large amount of mud, common method for sludge treatment is: by mud after press filtration, its water ratio is conventionally in 80% left and right, and the mud of high-moisture percentage is used for greatly landfill, During High-Temperature Composting etc., and this just easily causes new environmental pollution.And the burning disposal of mud is mud solution the most thoroughly, but the high mud of water ratio can not directly burn, and must first dewater, mummification or add burning auxiliary material, before general sludge incineration, all will first carry out mummification.The processing disposal costs of sewage sludge is higher, in whole construction costs of sewage work, for the treatment of accounting for more than 1/5th of mud, the composition of sewage sludge is very complicated, except containing a large amount of moisture, also containing a large amount of useful resources, have at present multiplely for urban sludge treating method, generally there are landfill, burning and comprehensive utilization, but before recycling, need carry out pre-treatment to mud, nurse one's health, comprise concentrated, dehydration, dry.Mud after mummification, can apply to land reclamation, building materials utilization etc.But more existing technology mummification adopt direct heating, compare indirect heating and can produce more waste gas.How to reduce the water ratio of mud, be reduced in the energy consumption of dehydration, also should avoid problem of secondary pollution in drying process, this is the vital task of sludge treatment.
Utility model content
The purpose of this utility model is to provide a kind of energy-saving sludge drying device that utilizes sun power and waste heat, utilize sun power and waste heat to carry out indirect heating evaporation to mud, adopt evaporation waste gas closed circuit circulatory system, can further reduce moisture percentage in sewage sludge, have energy-efficient, level of automation is high, effectively avoids the feature of problem of secondary pollution.
The purpose of this utility model is achieved through the following technical solutions: a kind of energy-saving sludge drying device that utilizes sun power and waste heat, comprising: wet sludge bin, mud vaporizer, water supply tank, hot well tank, solar energy collector, electric heater, spray tower for waste gas, adsorber, cyclonic separator, drive unit, rotary type sludge drying device, dewatered sludge storehouse, waste heat boiler and gas flare; It is characterized in that: between described wet sludge bin and mud vaporizer, be provided with feeding conveyor, between mud vaporizer and rotary type sludge drying device, be provided with feeding conveyor; In described mud vaporizer, be provided with tripper; The bottom of described mud vaporizer is provided with heat exchange water pipe, and heat exchange water pipe is connected with hot well tank by pipeline, and hot well tank is connected with solar energy collector by pipeline, and hot well tank is provided with electric heater.
Described water supply tank is connected with hot well tank with pipeline by pump.
Described mud vaporizer is all connected with cyclonic separator by pipeline with rotary type sludge drying device venting port.
The outlet of described cyclonic separator by pipeline successively with spray tower for waste gas, adsorber, gas flare and chimney.
Further, described adsorber is provided with adsorption stuffing.
In sum, the beneficial effects of the utility model are: utilize solar source to carry out an indirect heating evaporation to mud, then by waste heat boiler, mud is carried out to the evaporation of secondary indirect heating, can further reduce moisture percentage in sewage sludge, rotary type sludge drying device can make general moisture percentage in sewage sludge be about 80% and be reduced to very soon 40% left and right, has obviously reduced the water content of mud; And be furnished with evaporation waste gas closed circuit circulatory system, and take away rapidly the moisture of mud evaporation, reduce heat-energy losses, there is high efficient heat recovery; The utility model adopts totally-enclosed system, is provided with waste gas cleaning system, has reduced the secondary pollution of mud, and after mummification, mud can arrive the requirement of recycling.
Brief description of the drawings
Fig. 1 process system schematic diagram of the present utility model.
The title of mark in accompanying drawing: 1-wet sludge bin; 2-feeding conveyor; 3-mud vaporizer; 4-heat exchange water pipe; 5-tripper; 6-water supply tank; 7-hot well tank; 8-solar energy collector; 9-electric heater; 10-embedded heat exchanger; 11-spray tower for waste gas; 12-adsorber; 13-adsorption stuffing; 14-cyclonic separator; 15-intermediate conveyor belt; 16-drive unit; 17-rotary type sludge drying device; 18-inner core; 19-drier enclosure; 20-outfeed belt conveyor; 21-dewatered sludge storehouse; 22-waste heat boiler; 23-gas flare; 24-chimney; 25-recycle pump.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited only to this.
Embodiment: as shown in Figure 1, the utility model comprises: wet sludge bin 1, mud vaporizer 3, water supply tank 6, hot well tank 7, solar energy collector 8, electric heater 9, spray tower for waste gas 11, adsorber 12, cyclonic separator 14, drive unit 16, rotary type sludge drying device 17, dewatered sludge storehouse 21, waste heat boiler 22 and gas flare 23; It is characterized in that: between described wet sludge bin 1 and mud vaporizer 3, be provided with feeding conveyor 2, between mud vaporizer 3 and rotary type sludge drying device 17, be provided with feeding conveyor 2; In described mud vaporizer 3, be provided with tripper 5; The bottom of described mud vaporizer 3 is provided with heat exchange water pipe 4, and heat exchange water pipe 4 is connected with hot well tank 7 by pipeline, and hot well tank 7 is connected with solar energy collector 8 by pipeline, and hot well tank 7 is provided with electric heater 9.
Described water supply tank 6 is connected with hot well tank 7 with pipeline by pump.
Described mud vaporizer 3 is all connected with cyclonic separator 14 by pipeline with rotary type sludge drying device 17 venting ports.
The outlet of described cyclonic separator 14 by pipeline successively with spray tower for waste gas 11, adsorber 12, gas flare 23 and chimney 24.
Further, described adsorber 10 is provided with adsorption stuffing 11.
Principle of work of the present utility model: the mud of sewage work carries out after thickening, water ratio is that 80~85% mud enters wet sludge bin 1, feeding conveyor 2 is by sludge lifting mud vaporizer 3, solar energy collector 8 utilizes the water in solar absorption heat heat hot water tank 7, by the heat exchange water pipe 4 of recycle pump 25 suction mud vaporizer 3 bottoms, heat exchange water pipe 4 carries out indirect heat exchange with mud, mud vaporizer 3 seals, mud vaporizer 3 internal temperatures raise, moisture evaporation in mud, tripper 5 promotes and turns over paving mud back and forth, accelerate mud evaporation.In hot well tank 7, water temperature remains on more than 50 DEG C, starts electric heater 9 in the time of cloudy day or rainy day, to keep water temperature in hot well tank 7.After operation for some time, hot well tank 7 loses a part of water, and water supply tank 6 carries out moisturizing to hot well tank 7.
Mud evaporates after portion of water through mud vaporizer 3, be transported to rotary type sludge drying device 3 inside by intermediate conveyor belt 15, drive unit 16 drives inner core 18 to rotate, and rotary type sludge drying device 3 inside have certain angle of inclination, and sludge stream is to dumping device; Waste heat boiler 6 provides steam, and steam enters into conducting tube inside by steam-in, and conducting tube is heated to mud heating, is heated and is carried out transpiring moisture by mud conducting tube, and mud is discharged from discharge port by dumping device.The recirculated air of gas flare 23 enters inner core 18 from the gas inlet of rotary type sludge drying device 3, takes away rapidly the moisture of mud evaporation.
The closed cycle process of recirculated air: mud vaporizer 3 venting ports are connected with cyclonic separator 14 by pipeline, hot air circulation air purifies by connecting wind separator 7, spray tower for waste gas 8, adsorber 10 and gas flare 12 successively, wherein a part of dry recirculated air discharges after processing, and a part enters rotary type sludge drying device 3 and carries out air cycle.
As mentioned above, just can realize preferably the utility model.

Claims (5)

1. an energy-saving sludge drying device that utilizes sun power and waste heat, comprising: wet sludge bin (1), mud vaporizer (3), water supply tank (6), hot well tank (7), solar energy collector (8), electric heater (9), spray tower for waste gas (11), adsorber (12), cyclonic separator (14), drive unit (16), rotary type sludge drying device (17), dewatered sludge storehouse (21), waste heat boiler (22) and gas flare (23); It is characterized in that: between described wet sludge bin (1) and mud vaporizer (3), be provided with feeding conveyor (2), between mud vaporizer (3) and rotary type sludge drying device (17), be provided with feeding conveyor (2); In described mud vaporizer (3), be provided with tripper (5); The bottom of described mud vaporizer (3) is provided with heat exchange water pipe (4), heat exchange water pipe (4) is connected with hot well tank (7) by pipeline, and hot well tank (7) is connected with solar energy collector (8) by pipeline, and hot well tank (7) is provided with electric heater (9).
2. a kind of energy-saving sludge drying device that utilizes sun power and waste heat according to claim 1, is characterized in that: described water supply tank (6) is connected with hot well tank (7) with pipeline by pump.
3. a kind of energy-saving sludge drying device that utilizes sun power and waste heat according to claim 1, is characterized in that: described mud vaporizer (3) is all connected with cyclonic separator (14) by pipeline with rotary type sludge drying device (17) venting port.
4. a kind of energy-saving sludge drying device that utilizes sun power and waste heat according to claim 1, is characterized in that: the outlet of described cyclonic separator (14) by pipeline successively with spray tower for waste gas (11), adsorber (12), gas flare (23) and chimney (24).
5. a kind of energy-saving sludge drying device that utilizes sun power and waste heat according to claim 1, is characterized in that: described adsorber (10) is provided with adsorption stuffing (11).
CN201420005941.XU 2014-01-06 2014-01-06 Energy-saving sludge drying device using solar energy and afterheat Expired - Fee Related CN203653407U (en)

Priority Applications (1)

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CN201420005941.XU CN203653407U (en) 2014-01-06 2014-01-06 Energy-saving sludge drying device using solar energy and afterheat

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104129898A (en) * 2014-06-28 2014-11-05 浙江绿治污泥处理技术有限公司 Solar constant-temperature-drying harmless sludge treatment device and method
CN104236284A (en) * 2014-10-16 2014-12-24 广西玉林宏江能源科技有限公司 All-thing energy-saving drying machine combined by hot blast heater, solar energy and waste heat recoverer
CN105330119A (en) * 2015-10-30 2016-02-17 中国科学院广州能源研究所 Method and system for drying sludge by means of solar energy and flue gas waste heat

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104129898A (en) * 2014-06-28 2014-11-05 浙江绿治污泥处理技术有限公司 Solar constant-temperature-drying harmless sludge treatment device and method
CN104129898B (en) * 2014-06-28 2016-06-08 浙江绿治污泥处理技术有限公司 Solar energy mud constant temperature mummification harmless treatment device and method
CN104236284A (en) * 2014-10-16 2014-12-24 广西玉林宏江能源科技有限公司 All-thing energy-saving drying machine combined by hot blast heater, solar energy and waste heat recoverer
CN105330119A (en) * 2015-10-30 2016-02-17 中国科学院广州能源研究所 Method and system for drying sludge by means of solar energy and flue gas waste heat

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Granted publication date: 20140618

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