CN102351396B - Sludge drying equipment using waste heat of landfill gas power generation - Google Patents
Sludge drying equipment using waste heat of landfill gas power generation Download PDFInfo
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- CN102351396B CN102351396B CN2011101631977A CN201110163197A CN102351396B CN 102351396 B CN102351396 B CN 102351396B CN 2011101631977 A CN2011101631977 A CN 2011101631977A CN 201110163197 A CN201110163197 A CN 201110163197A CN 102351396 B CN102351396 B CN 102351396B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention provides sludge drying equipment using waste heat of landfill gas power generation, which belongs to environmental protection equipment. The equipment employs waste heat of condensed water of a landfill gas power generator assembly, flue gas, waste water and the like to heat and dry sludge entering into the equipment with a hollow stirrer in the sludge drying equipment, and can recycle condensed water of the power generator assembly and reduce the temperature of flue gas and waste water to be discharged; the outer walls of a stirring drying cabin and a spindle are provided with vacuum heat pipes, and a conveying drying cabin is also provided with vacuum heat pipes, which enables a low grade heat source in the stirring drying cabin to be recycled again and to be used for redrying sludge in the conveying drying cabin, thereby realizing reutilization of the waste heat of landfill gas power generation. The sludge drying equipment provided in the invention has the advantages of a reasonable structure, a high waste heat utilization rate, a good sludge drying effect, strong capability of continuous working, etc.
Description
Affiliated field
A kind of sludge drying equipment using waste heat of landfill gas power generation that the present invention relates to belongs to the environmental protection equipment class.
Background technology
Along with progressively raising speed, the municipal sewage treatment Facilities Construction day by day improves the sludge creation amount sharp increase of sewage work with the sewage centralized treatment rate.According to relevant prediction, China's municipal effluent amount also has in next two decades and increases substantially, and quantity of wastewater effluent will reach 440 * 10 in 2010
8m
3/ d; The year two thousand twenty quantity of wastewater effluent reaches 536 * 10
8m
3/ d; Sludge quantity usually accounts for 0.3%～0.5% (volume) of sewage quantity or is about 1%～2% (quality) of sewage load.And if sewage is carried out advanced treatment again, sludge quantity also can increase by 0.5～1 times.At present wastewater treatment in China amount and processing rate not high (4.5%), and about 9,000,000 t of municipal sewage plant's annual discharging mud, but also with the speed increment in every year about 10%.
A large amount of undressed mud is stacked arbitrarily and discharging has caused new pollution to environment, and it is usually suitable with the sewage disposal expense that it processes disposal costs.Thereby how that output is huge, the mud of complicated component after the science processing, makes its innoxious, resource utilization, and having become China and even whole world environment circle is one of focus of paying close attention to deeply.The traditional ﹠ Mud initial cost of China is large, load is low, security requirement is high, the problems such as the operational management difficulty is large, service experience shortage, so cause the idleness of equipment, waste is very big.There is great quantity of small sewage work in China, and its mud overwhelming majority fails properly to be disposed, and sludge disposal has become Designing Sewage Treatment Plant, necessary top-priority important step in service.Sludge treatment and disposal are not only China and are the technological challenges that the world faces.
China methane production device occurred in about 20～thirties of last century, in recent decades, the biogas fermentation technology has been widely used in various organic wastes and the Biogas of processing among agricultural, industry and the human lives, for human being's production and life provide abundant renewable energy source.To the end of the year 2005, China builds all kinds of big-and-middle-sized biogas engineerings 3764 places, and total pond holds 1,720,000 m
3, year 1.2 hundred million tons of wastes of processing are produced biogas 3.4 hundred million m per year
3, utilize marsh gas power generation 4,000 ten thousand kwh, air feed 1,380,000 families.The biogas engineering operation quantity of wherein processing agricultural wastes is 3556 places, and total pond holds 1,000,000 m
3, 8710 tons of offal treatment amounts are produced biogas 2.3 hundred million m per year
3, nearly 1,320,000 families of air feed number of users.
There is the waste heat of multiple grade in China's marsh gas power generation, and each recycling mode and equipment shortcoming very also.Three kinds of the UTILIZATION OF VESIDUAL HEAT IN of engine exhaust, the 1. waste heat of engine exhaust → produce steam → hot digestion device by waste heat boiler; 2. the waste heat of engine exhaust → produce hot water → hot digestion device by interchanger; 3. the waste heat of engine exhaust → by waste gas absorption formula cold and hot water water-heater → be used for air-conditioning system; UTILIZATION OF VESIDUAL HEAT IN in the engine cooling water, waste heat in the engine cooling water → produce hot water with the hot digestion device by interchanger.
Yet in the design of numerous UTILIZATION OF VESIDUAL HEAT IN, the recovery of thermal source mainly utilizes generates electricity with heating steam again or heats water source or gas heating, and UTILIZATION OF VESIDUAL HEAT IN efficient is not high, and Application Areas is extremely limited to, and its utilization at low-grade heat source is made slow progress.Severe situation in conjunction with the sewage sludge harmlessness processing, the thermal transition that development adapts to various grades utilizes equipment, with landfill methane power generation waste heat high efficiente callback dewatered sludge, promote the quick drying and other treatment of mud, the waste heat recovery dewatered sludge is one of important channel of sewage sludge harmlessness processing.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of sludge drying equipment using waste heat of landfill gas power generation, adopt vacuum heat-pipe to realize the low-grade heat source recycling, and mud is implemented the secondary mummification, improve UTILIZATION OF VESIDUAL HEAT IN efficient.To achieve these goals, its technical solution is:
A kind of sludge drying equipment using waste heat of landfill gas power generation.Described apparatus for drying sludge is by generator system, stir mummification storehouse 2, carry mummification storehouse 7, electric motor 1, hollow agitator 4 and conveying unit 8 form, carry 7 sealings of mummification storehouse to be connected to the below of stirring mummification storehouse 2, and the outlet of stirring mummification storehouse 2 is positioned at carries 7 inside, mummification storehouse, carry unit 8 to be arranged on and carry 7 inside, mummification storehouse, carry unit 8 to be formed by upper conveyor belt and lower conveyor belt, lower conveyor belt is positioned between the outlet below of stirring mummification storehouse (2) and the outlet top of the carrying mummification storehouse (7), upper conveyor belt is positioned at the lower conveyor belt top, hollow agitator 4 is comprised of quill shaft and hollow screw blade sheet and runs through to be arranged on and stirs 2 inside, mummification storehouse, offer spiral slot on the quill shaft, the propeller blade correspondence of hollow is fixedly connected on the spiral slot, one end of hollow agitator 4 is connected with the axle of electric motor 1 on being fixed on support 6 by shaft coupling, the inwall that stirs mummification storehouse 2 is provided with the spindle 3 that the propeller blade profile with hollow is complementary, be fixedly installed equally distributed vacuum heat-pipe on the outer wall of spindle 3, be fixedly installed equally distributed vacuum heat-pipe on the outer wall in stirring mummification storehouse, upper conveyor belt and lower conveyor belt inside all are fixedly installed equally distributed vacuum heat-pipe, the water outlet of the condensing coil of described generator system, exhanst gas outlet and wastewater outlet are connected to respectively the import of hollow agitator 4 through pipeline through valve, the outlet of hollow agitator 4 connects respectively the condensate water discharging valve by pipeline, flue gas exhaust valve and waste water water discharge valve, the top of stirring mummification storehouse 2 is provided with pneumatic outlet and carries on the sidewall in mummification storehouse 7 and is provided with pneumatic outlet, pneumatic outlet on stirring mummification storehouse 2 and being connected mummification storehouse 7 connects the gas feed of vacuum fan 9 by pipeline, the pneumatic outlet of vacuum fan 9 connects condenser 10 by pipeline, the liquid exit of condenser 10 connects the condensation water collection container, and the pneumatic outlet of condenser 10 connects gas-cleaning installation.Generator system is the landfill methane power generation unit.
The gas outlet that stirs mummification storehouse 2 is provided with sensor group 5, and sensor group 5 is comprised of temperature sensor, humidity sensor, pressure transmitter and flow sensor.
Owing to adopted above technical scheme, a kind of sludge drying equipment using waste heat of landfill gas power generation of the present invention can heat drying and other treatment by the hollow agitator to the mud that enters this equipment with waste heats such as landfill methane power generation machine unit water of condensation, flue gas and waste water respectively as required, also the water of condensation of generator system recycle be can be carried out, flue gas and discharge of wastewater temperature reduced; Vacuum heat-pipe is set on the outer wall of stirring mummification storehouse outer wall and spindle and in carrying the mummification storehouse, vacuum heat-pipe is set, with stir that low-grade heat source in the mummification storehouse is recycled again and in carrying the mummification storehouse dewatered sludge again, realized the second stage employ to the landfill methane power generation waste heat.Simultaneously, adopt hollow screw blade sheet and in stirring the mummification storehouse, arrange be fixedly installed on the hollow stir shaft on the spindle that matches of hollow screw blade sheet profile, increased the sludge drying evaporation area.Be compressed into thin layer by being arranged on the mud that the conveying unit of carrying inside, mummification storehouse will stir after the mummification in mummification storehouse, increased the evaporation drying area in conveying inside, mummification storehouse of mud, shortened the whole drying time of mud, the mud after the mummification carries out again mummification to vacuum heat-pipe by being arranged on upper conveyor belt and lower conveyor belt inside in the mummification storehouse to stirring again, has accelerated the mummification speed of mud.That sludge drying equipment using waste heat of landfill gas power generation of the present invention has is rational in infrastructure, UTILIZATION OF VESIDUAL HEAT IN efficient high, effective, the advantages such as ability is strong of working continuously of sludge drying.
Description of drawings
Accompanying drawing is the structural representation of sludge drying equipment using waste heat of landfill gas power generation of the present invention.
Embodiment
A kind of sludge drying equipment using waste heat of landfill gas power generation.Described apparatus for drying sludge is by generator system, stir mummification storehouse 2, carry mummification storehouse 7, electric motor 1, hollow agitator 4 and conveying unit 8 form, carry 7 sealings of mummification storehouse to be connected to the below of stirring mummification storehouse 2, and the outlet of stirring mummification storehouse 2 is positioned at carries 7 inside, mummification storehouse, carry unit 8 to be arranged on and carry 7 inside, mummification storehouse, carry unit 8 to be formed by upper conveyor belt and lower conveyor belt, lower conveyor belt is positioned between the outlet below of stirring mummification storehouse (2) and the outlet top of the carrying mummification storehouse (7), upper conveyor belt is positioned at the lower conveyor belt top, and the mud discharging after the mummification is gone out device external.The mud import is arranged on the top of stirring mummification storehouse 2, near hollow agitator 4 imports one end.
Hollow agitator 4 is comprised of quill shaft and hollow screw blade sheet and runs through to be arranged on and stirs 2 inside, mummification storehouse, offers spiral slot on the quill shaft, and the propeller blade correspondence of hollow is fixedly connected on the spiral slot.Hollow agitator 4 and the propeller blade that is fixedly installed on the hollow on the stir shaft for increasing thermal medium unit water of condensation, flue gas and waste water and mud between heat exchange area.
One end of hollow agitator 4 is connected with the axle of electric motor 1 on being fixed on support 6 by shaft coupling, the inwall that stirs mummification storehouse 2 is provided with the spindle 3 that the propeller blade profile with hollow is complementary, spindle 3 is transmission spaces of compression mud, reduce the thickness of sludge blanket, shorten the heat conduction distance of residual heat to dry sludge, and then relatively increased heating-surface area and the evaporation area of dewatered sludge.The heat conduction medium be used for to absorb landfill methane power generation waste heat energy, and with this Energy Transfer and be converted into the energy of sludge drying.
Be fixedly installed equally distributed vacuum heat-pipe on the outer wall of spindle 3, be fixedly installed equally distributed vacuum heat-pipe on the outer wall in stirring mummification storehouse, upper conveyor belt and lower conveyor belt inside all are fixedly installed equally distributed vacuum heat-pipe.Filling has superpower heat active and the multiple inorganic active metal of heat sensitivity and the heat conduction medium that compound forms thereof in the vacuum heat-pipe.Carry unit 8 to be used for mud is compressed into thin layer, heat conduction distance when shortening dewatered sludge, and the mud after the mummification is transferred out to carrying 7 outlets of mummification storehouse, vacuum heat-pipe be used for to absorb stirs the waste heat energy of mummification storehouse 2 mud granules and evaporation steam, hot gas, so in carrying mummification storehouse 7 dewatered sludge again.
The water outlet of the condensing coil of described generator system, exhanst gas outlet and wastewater outlet are connected to respectively the import of hollow agitator 4 through pipeline through valve, the outlet of hollow agitator 4 connects respectively condensate water discharging valve, flue gas exhaust valve and waste water water discharge valve by pipeline, when the hot water in the condensing coil that adopts generator system, directly open correspondence and be arranged on water of condensation water intaking valve and water discharge valve on the apparatus for drying sludge, the generator system external heat source is used for sludge drying, and the temperature of fast reducing water of condensation, realize the condensate water circulatory application; When the thermal source that adopts flue gas as dewatered sludge is, then correspondence is opened flue gas intake valve and the vent valve that is arranged on the apparatus for drying sludge, the thermal source that flue gas is carried is used for dewatered sludge, reduces flue-gas temperature and heat, again flue gas is released into smoke eliminator through vent valve; And when adopting generator system waste water, corresponding influent waste water valve and the water discharge valve that is arranged on the apparatus for drying sludge of opening then specified the discharge of wastewater place with being disposed to behind the UTILIZATION OF VESIDUAL HEAT IN of waste water and the lowering device exhaust temperature.Generator system can adopt landfill methane power generation unit or thermal power generator.
The top of stirring mummification storehouse 2 is provided with pneumatic outlet and carries on the sidewall in mummification storehouse 7 and is provided with pneumatic outlet, pneumatic outlet on stirring mummification storehouse 2 and being connected mummification storehouse 7 is by the gas feed of pipeline connection vacuum fan 9, and vacuum fan 9 is used for stirring mummification storehouse 2 and carries steam and the gas in mummification storehouse 7 in time to extract out.
The pneumatic outlet of vacuum fan 9 connects condenser 10 by pipeline, and the liquid exit of condenser 10 connects the condensation water collection container, and the pneumatic outlet of condenser 10 connects gas-cleaning installation.Condenser 10 is used for realizing gas-liquid separation, and gas-cleaning installation is used for removing hazardous and noxious substances and the foul smell of gas, and the liquid that condenser 10 is separated enters the condensation water collection containers store, can use according to the resource that water quality suits.
The gas outlet that stirs mummification storehouse 2 is provided with sensor group 5, and sensor group 5 is comprised of temperature sensor, humidity sensor, pressure transmitter and flow sensor.The flow of temperature, humidity, pressure and the evaporation steam of the inside, stirring mummification storehouse when sensor group 5 is used for surveying work.
Claims (2)
1. sludge drying equipment using waste heat of landfill gas power generation, it is characterized in that: described apparatus for drying sludge is by generator system, stir mummification storehouse (2), carry mummification storehouse (7), electric motor (1), hollow agitator (4) and conveying unit (8) form, carry mummification storehouse (7) sealing to be connected to the below of stirring mummification storehouse (2), and the outlet of stirring mummification storehouse (2) is positioned at carries inside, mummification storehouse (7), carry unit (8) to be arranged on and carry inside, mummification storehouse (7), carry unit (8) to be formed by upper conveyor belt and lower conveyor belt, lower conveyor belt is positioned between the outlet below of stirring mummification storehouse (2) and the outlet top of the carrying mummification storehouse (7), upper conveyor belt is positioned at the lower conveyor belt top, hollow agitator (4) is comprised of quill shaft and hollow screw blade sheet and runs through to be arranged on and stirs inside, mummification storehouse (2), offer spiral slot on the quill shaft, the propeller blade correspondence of hollow is fixedly connected on the spiral slot, one end of hollow agitator (4) is connected with the axle of electric motor (1) on being fixed on support (6) by shaft coupling, the inwall that stirs mummification storehouse (2) is provided with the spindle (3) that the propeller blade profile with hollow is complementary, be fixedly installed equally distributed vacuum heat-pipe on the outer wall of spindle (3), be fixedly installed equally distributed vacuum heat-pipe on the outer wall in stirring mummification storehouse, upper conveyor belt and lower conveyor belt inside all are fixedly installed equally distributed vacuum heat-pipe, the water outlet of the condensing coil of described generator system, exhanst gas outlet and wastewater outlet are connected to respectively the import of hollow agitator (4) through pipeline through valve, the outlet of hollow agitator (4) connects respectively the condensate water discharging valve by pipeline, flue gas exhaust valve and waste water water discharge valve, the top of stirring mummification storehouse (2) is provided with pneumatic outlet and carries on the sidewall in mummification storehouse (7) and is provided with pneumatic outlet, stir mummification storehouse (2) and the pneumatic outlet on being connected mummification storehouse (7) and connect the gas feed of vacuum fan (9) by pipeline, the pneumatic outlet of vacuum fan (9) connects condenser (10) by pipeline, the liquid exit of condenser (10) connects the condensation water collection container, and the pneumatic outlet of condenser (10) connects gas-cleaning installation.
2. a kind of sludge drying equipment using waste heat of landfill gas power generation as claimed in claim 1, it is characterized in that: the gas outlet that stirs mummification storehouse (2) is provided with sensor group (5), and sensor group (5) is comprised of temperature sensor, humidity sensor, pressure transmitter and flow sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101631977A CN102351396B (en) | 2011-06-17 | 2011-06-17 | Sludge drying equipment using waste heat of landfill gas power generation |
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| CN2011101631977A CN102351396B (en) | 2011-06-17 | 2011-06-17 | Sludge drying equipment using waste heat of landfill gas power generation |
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| CN102351396A CN102351396A (en) | 2012-02-15 |
| CN102351396B true CN102351396B (en) | 2013-10-16 |
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| CN106378002A (en) * | 2016-10-31 | 2017-02-08 | 南开大学 | Deodorizing conveying device for conveying municipal solid waste and application |
| CN108585995A (en) * | 2017-12-13 | 2018-09-28 | 中山市和智电子科技有限公司 | A kind of agitating type composting reactor |
| CN109592876A (en) * | 2018-12-26 | 2019-04-09 | 徐州工程学院 | A kind of sludge drying system and method using wind drive flywheel energy storage |
| CN109775957A (en) * | 2019-02-15 | 2019-05-21 | 广州市香港科大***研究院 | A kind of sludge drying system and its implementation of combination Temperature Humidity Sensor |
| CN110423677A (en) * | 2019-08-19 | 2019-11-08 | 鹏鹞环保股份有限公司 | A kind of full mixing biological fermentation device of various dimensions |
| CN112661380A (en) * | 2019-10-15 | 2021-04-16 | 湖南省益能环保科技有限公司 | Briquetting forming device is carried to mud |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003211198A (en) * | 2002-01-18 | 2003-07-29 | Maruyama Kogyo Kk | Sludge treatment apparatus |
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| DE3429055C2 (en) * | 1984-08-07 | 1987-12-03 | Heiner Dipl.-Ing. 4030 Ratingen De Kreyenberg | |
| CN1843985A (en) * | 2005-04-08 | 2006-10-11 | 兰州瑞德干燥技术有限公司 | Method for drying sludge by blade drier |
| CN101723569A (en) * | 2008-10-27 | 2010-06-09 | 陈晓军 | Solar sludge vacuum drying device |
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