CN203615342U - Sludge and garbage combined incineration thermoelectric treatment system - Google Patents
Sludge and garbage combined incineration thermoelectric treatment system Download PDFInfo
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- CN203615342U CN203615342U CN201320867072.7U CN201320867072U CN203615342U CN 203615342 U CN203615342 U CN 203615342U CN 201320867072 U CN201320867072 U CN 201320867072U CN 203615342 U CN203615342 U CN 203615342U
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Abstract
The utility model discloses a sludge and garbage combined incineration thermoelectric treatment system. The sludge and garbage combined incineration thermoelectric treatment system comprises a garbage incineration system, a sludge incineration system and a waste gas treatment system, wherein the garbage incineration system comprises a grate furnace, a hot gas exhaust passage of the grate furnace is communicated with a boiler, a steam outlet of the boiler is communicated with a steam header, steam output ports of the steam header are divided into a steam output port A, a steam output port B, a steam output port C and a steam output port D, and the steam output port D passes through a residual heat utilization device and then is connected to a deaerator; the sludge incineration system comprises a wet sludge chamber, a rotary sludge drying machine and a fluidized-bed sludge incinerator which are connected sequentially, a heat supplying end of the rotary sludge drying machine is connected with the residual heat utilization device, a sludge output port of the rotary sludge drying machine is connected with the fluidized-bed sludge incinerator and the wet sludge chamber, hot waste gas of the fluidized-bed sludge incinerator is separated and then forms hot fume and waste dusty gas, and the hot fume enters the boiler.
Description
Technical field
The utility model relates to mud and rubbish is combined burning thermoelectricity treatment system and processing method, belongs to environmental protection technical field of sludge treatment.
Background technology
At present, the discharge capacity of urban industry waste water and sanitary sewage is increasing, and sewage load is more and more, and the sludge yield of sewage treatment plant also sharply increases.In adopting materialization, biological method to dispose of sewage, can produce a large amount of excess sludges, the mud that wherein organic content is very high must obtain treatment and disposal in time, otherwise can cause secondary pollution, and the final settling mode of mud mainly adopts: landfill, agricultural, drying and incineration.Due to industrial development, the content of beary metal most cases in mud all exceeds standard, cannot directly carry out agriculturally, and simultaneously, due to constantly the dwindling of landfill yard area, mud transportation range is more and more remoter again.Though and mud is through processed, its moisture content is still higher, cause landfill yard to be difficult to accept, and then cause cannot landfill or landfill expense constantly rise.Traditional method for sludge treatment carries out simply mechanicalness and concentrates and processed in sewage treatment plant, can not meet processing requirements and the cleanup standard of present stage.
The composition of sewage sludge is very complicated, and except containing a large amount of moisture, also, containing a large amount of useful resources, the mud after mummification, can apply to the betterment of land, building materials utilization etc., but General Requirements moisture content is below 55%.Sludge drying mode has: natural air drying, directly heating and indirect.How to reduce the moisture content of mud, reduce energy consumption, reduce secondary pollution, this is the key technology of Treatment of Sludge.The mode that traditional sludge is burned is: after first moisture content being concentrated through dewatering up to more than 99% mud, the moisture content of mud is reached below 80%, now adopt the concentrated mode of dehydration can not further reduce the moisture content of mud, now need to be by desiccation machine, evaporate the moisture content in mud by the mode of electrical heating or heated by natural gas, the moisture content of mud is further reduced to below 60%, mud now can burn to the processing of burning of the material in mud by high-temperature heating, flue gas after pending is discharged after directly or indirectly processing, therefore in the technology of traditional burning sludge, also need independently to arrange fume treatment auxiliary, this increases equipment cost and maintenance cost undoubtedly, sometimes owner is in order to reduce costs, directly the flue gas of generation is directly discharged, cause secondary pollution, the equipment of this cover system is many simultaneously, power consumption is large, particularly the power consumption in dehydration thickened sludge step accounts for the over half of whole system power consumption, in whole system, increase undoubtedly network load, do not meet the needs of country to environmental protection, therefore we need to work out a set of system that how to reduce electric vitiable environmental protection burning sludge, reach the national requirements of energy-saving and emission-reduction.
Utility model content
The purpose of this utility model is to provide mud and rubbish to combine and burns thermoelectricity treatment system and processing method, this system synthesis 1 is overlapped waste incineration processing system and 1 cover Disposal System of Mud Burning, the power consumption that solves Disposal System of Mud Burning is large, reduce moisture percentage in sewage sludge with the heat of first using incineration treatment of garbage generation, reduce the demand of outside energy supply, the heat that the heat supplement incineration treatment of garbage producing with sludge incineration again produces, reach with the object by combustion, the demand of accomplishing effectively to reduce external function with the heat of also heat supplement waste incineration, reduced the operation of Treatment of Sludge simultaneously, reduce the equipment of Treatment of Sludge, reach reduction equipment requirement, reduce the object of equipment cost.
The purpose of this utility model is achieved through the following technical solutions: mud and rubbish are combined burning thermoelectricity treatment system, comprise refuse burning system, sludge incinerating system, exhaust treatment system, wherein, refuse burning system comprises grate furnace, the hot gas passing away of grate furnace is communicated with boiler, the steam (vapor) outlet of boiler is communicated with steam header, the steam outlet of steam header is divided into steam outlet A, steam outlet B, steam outlet C, steam outlet D, steam outlet A refluxes after by oxygen-eliminating device and is connected to boiler, after steam outlet B is connected to oxygen-eliminating device by vapor condenser, backflow is connected to boiler, steam outlet C is connected to oxygen-eliminating device after steam turbine generator, steam outlet D is connected to oxygen-eliminating device after residual heat using device, sludge incinerating system comprises the wet sludge bin connecting successively, mud revolution desiccation machine, fluid bed sludge incinerator, the heat supply end of mud revolution desiccation machine is connected with residual heat using device, the mud output port of mud revolution desiccation machine is connected with fluid bed sludge incinerator and wet sludge bin, the hot waste gas of fluid bed sludge incinerator forms hot flue gas and useless dirt gas after separating, hot flue gas enters boiler, useless dirt gas enters exhaust treatment system, exhaust treatment system comprises the evaporation reaction tower connecting successively, cloth bag reactor, steam smoke heater, desulfuring and denitrifying apparatus, air-introduced machine, chimney, in the connecting pipe of evaporation reaction tower and cloth bag reactor, be communicated with administration device, steam smoke heater is connected with ammonifying device, the solidfied material outlet of evaporation reaction tower and the solidfied material outlet of cloth bag reactor are connected to flyash curing storehouse simultaneously, the useless dirt gas of fluid bed sludge incinerator enters cloth bag reactor, and the waste gas of boiler enters evaporation reaction tower.
The design principle of this device is: first utilize grate furnace combustion refuse, cause boiler to produce high-temperature steam, and high-temperature steam is introduced to steam header, by steam header, high-temperature steam is distributed, it is in fact the distribution to energy, wherein the steam of a part enters residual heat using device, residual heat using device is carried out heat exchange, transfer of heat is turned round in desiccation machine to mud, in sludge incinerating system, the heat that mud revolution desiccation machine is used incineration firing reaches the object of evaporating the moisture in mud, therefore compare traditional sludge treatment system, in native system, do not need sludge dewatering enrichment facility, therefore greatly reduce the demand of external function, in native system, need be only that more than 99% mud is directly put in mud revolution desiccation machine by moisture content in wet sludge bin, utilize the heat exchange of residual heat using device that mud is turned round to desiccation machine intensification, while causing the moisture percentage in sewage sludge entering in mud revolution desiccation machine to be reduced to below 60%, discharge the mud in mud revolution desiccation machine, the mud at this place can so that fire, it is 80% sludge dewatering enrichment facility that the middle mud that can to omit moisture content be 99% changes moisture content into, the infusion of financial resources of saving large number quipments, the heat that while enters fluid bed sludge incinerator after-combustion generation by mud reschedules back boiler, be able to the heat in supplement boiler, reach to borrow heat to cause sludge incineration, the heat producing with sludge incineration returns to boiler, reach the object that does not rely on outside ability and play lignin-sludge, simultaneously the ability of sludge creation again can supplement boiler, thereby the heat of boiler is not lost.Because the waste gas of sludge incineration and incineration firing generation shares same exhaust treatment system, therefore the Treatment of Sludge part in native system does not need to arrange separately in addition exhaust treatment system, the setup fee that therefore can also save an exhaust treatment system simultaneously.Comprehensive, native system can solve the problem of garbage disposal and Treatment of Sludge simultaneously, but does not affect the problem of incineration firing, and the heat that boiler obtains is not affected, and has reduced equipment cost simultaneously and has not needed the object of outside energy supply.
Preferably, the lime-ash floss hole of grate furnace is communicated with lime-ash tapping equipment, and lime-ash tapping equipment is connected with magnetic separator, belt conveyor, ashcan in turn, and flyash curing storehouse is also communicated to ashcan.Magnetic separator separates the metal ingredient in lime-ash, reaches recycling and avoids the problem in heavy metal pollution soil.
Preferably, the charging aperture of grate furnace is provided with dispenser, and the input port of dispenser is communicated with dump pit, and dump pit top is provided with garbage crane.
Preferably, the air inlet of grate furnace is provided with fire grate air blast.
Processing method, comprises the steps:
A, incineration firing producing steam step: enter the rubbish in grate furnace and produce hot air discharge in boiler by grate furnace burning, the water in boiler is become high-temperature steam by steam generator in boiler, high-temperature steam enters steam header, distributed by steam header, it is 4 tunnels that steam header is distributed high-temperature steam, be respectively and mend temperature time recycle circuit, water inlet heat cycles circuit, steam-electric power recycle circuit, mud heat cycles circuit, wherein mending temperature returns recycle circuit and is refluxed after by oxygen-eliminating device and be connected to boiler and form by steam outlet A, water inlet heat cycles circuit is connected to reflux after oxygen-eliminating device by vapor condenser by steam outlet B and is connected to boiler and forms, vapor condenser is provided with waterworks, steam-electric power recycle circuit is connected to oxygen-eliminating device by steam outlet C and forms after steam turbine generator, mud heat cycles circuit is connected to oxygen-eliminating device by steam outlet D and forms after residual heat using device,
In this step, mend temperature time recycle circuit the transmission of part heat is returned to steam generator, cause steam generator can produce fast steam, avoid steam to produce middle interruption, water inlet heat cycles circuit heats supplementing the cold water entering in steam generator, also can avoid steam to be interrupted in the middle of producing, steam-electric power recycle circuit completes waste heat and is converted to the object of electric energy.Mud heat cycles circuit completes heat exchange, transfers heat to the device of mud heating.Oxygen-eliminating device is removed oxygen, prevents oxidation furnaces.
B, sludge incineration step: be that more than 99% mud is directly inputted to mud revolution desiccation machine by moisture content in wet sludge bin, mud revolution desiccation machine is connected to residual heat using device also and residual heat using device generation heat exchange, mud revolution desiccation machine is heated up and is heated the mud of mud revolution desiccation machine inside, after the circulation of mud revolution desiccation machine, discharge the mud of moisture content below 60% until mud, the mud of moisture content below 60% is sent in fluid bed sludge incinerator and burns, the hot waste gas that the burning of fluid bed sludge incinerator produces forms hot flue gas and useless dirt gas after separating, hot flue gas enters heating boiler in boiler, useless dirt gas is processed and is discharged through exhaust treatment system,
In this step, mud revolution desiccation machine utilizes the heat that residual heat using device generation heat exchange gets directly wet mud to be heated, when the moisture content of mud reaches below 60% until wet, be discharged to ignition combustion in fluid bed sludge incinerator, the heat supplement back boiler that sludge incineration in fluid bed sludge incinerator produces, useless dirt gas is through exhaust treatment system processing, and this step completes the processing to mud.
C, exhaust-gas treatment step: the waste gas that is received boiler by evaporation reaction tower, evaporation reaction tower is processed the waste gas of boiler, the waste gas of boiler is separated, isolate flyash curing thing and low dirt waste gas, the flyash curing thing that evaporation reaction tower separates enters flyash curing storehouse, the low dirt waste gas that evaporation reaction tower separates enters cloth bag reactor after by administration device administration, cloth bag reactor receives useless dirt gas simultaneously, cloth bag reactor is isolated flyash curing thing and low dirt waste gas again, the flyash curing thing that cloth bag reactor separates enters flyash curing storehouse, the low dirt waste gas that cloth bag reactor separates is through steam smoke heater, desulfuring and denitrifying apparatus carries out desulphurization denitration processing, finally discharged by chimney.
In this step, evaporation reaction tower carries out pretreatment, separate flyash curing thing and low dirt waste gas, cloth bag reactor is isolated flyash curing thing and low dirt waste gas again, the solidfied material producing during due to sludge incineration is less, in order to alleviate the burden of evaporation reaction tower, the special useless dirt gas that fluid bed sludge incinerator is produced is received by cloth bag reactor.Carry out the processing of tail gas desulphurization denitration by desulfuring and denitrifying apparatus.
Also comprise incineration firing solidfied material drain steps: the solidfied material that grate furnace burning produces enters ashcan through lime-ash tapping equipment, magnetic separator, belt conveyor successively, and magnetic separator adsorbing metal material carries out metal separation processing.
Also comprise grate furnace burning feed step: garbage transporting device is dumped rubbish and entered dump pit from refuse-unloading platform, by garbage crane lifting rubbish, rubbish is hung in to the charging aperture of dispenser, dispenser carries out pretreatment.
Mud revolution desiccation machine comprises desiccation apparatus shell, is provided with the central drum that runs through desiccation apparatus shell in desiccation apparatus shell, and central drum external diameter surface cover is provided with some basins.Desiccation apparatus outer casing inner wall is provided with fixed head, and fixed head is between adjacent basin.Desiccation apparatus shell upper end is provided with upper cover, and desiccation apparatus shell lower end is provided with low head, and central drum two ends are clamped on upper cover and low head.The outer diametric plane of central drum is also arranged with driving wheel, and driving wheel is connected with drive motors.Described upper cover is provided with steam inlet, and steam inlet is communicated with central drum.Low head is provided with steam (vapor) outlet, and steam (vapor) outlet is communicated with central drum.Desiccation apparatus shell is also provided with mud import, ventilates to, ventilation import, mud mouth.Fixed head is away from having gap between one end of desiccation apparatus shell and central drum, and angle between fixed head upper surface and central drum axis is less than 90 degree and is greater than 0 degree.Angle between fixed head upper surface and central drum axis is 80 degree.
After sewage treatment plant's sedimentation basin mud tentatively concentrates, after mechanism filter-pressing, moisture content drops to 80%～85%, mud further reduces moisture content in desiccation apparatus, mud is transported to mud import, drive motors drives driving wheel to rotate, central drum is under the drive of driving wheel, under the support of upper cover and low head, rotate, the high-temperature steam that central drum utilizes steam inlet to pass into, reject heat to basin, after basin heating, because mud flow on basin, and flow on basin, from top to bottom, mud some basins that flowed successively, being dried slowly, finally arrive desiccation apparatus intracavity bottom, arriving sludge outlet place discharges.In mobile process, under the guide effect of fixed head, there is reversal of direction of flow in mud, finally flows on the basin of next stage, so repeated multiple times, to reach the object of multilevel drying.
Mud and steam carry out heat exchange, entering air from ventilation import takes water vapour out of, after mummification, moisture percentage in sewage sludge drops to 45%～55%, mud is collected and is discharged from mud mouth at dewatered sludge feeder, the hot blast that contains moisture is collected in collecting hood, with air blast, waste gas is extracted out from hot-blast outlet, part waste gas is circulated back to circulation machine from backwind tube, contain moisture waste gas through exhaust gas washing tower and waste gas absorption bed process up to standard after discharge.
In sum, the beneficial effects of the utility model are: this system synthesis 1 is overlapped waste incineration processing system and 1 cover Disposal System of Mud Burning, the power consumption that solves Disposal System of Mud Burning is large, reduce moisture percentage in sewage sludge with the heat of first using incineration treatment of garbage generation, reduce the demand of outside energy supply, the heat that the heat supplement incineration treatment of garbage producing with sludge incineration again produces, reach with the object by combustion, the demand of accomplishing effectively to reduce external function with the heat of also heat supplement waste incineration, reduced the operation of Treatment of Sludge simultaneously, reduce the equipment of Treatment of Sludge, reach reduction equipment requirement, reduce the object of equipment cost, adopt indirect, the heat transfer area of basin is large, can make general moisture percentage in sewage sludge be about 98%～99% and be reduced to 30%～45% left and right, obviously reduce the water content of mud, and be furnished with ventilation circulation system, take away rapidly the moisture of mud evaporation, native system can automatic operating, easy to operate, the utility model adopts totally-enclosed system, has reduced the secondary pollution of mud, can arrive the requirement of recycling.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In accompanying drawing, the corresponding name of Reference numeral is called 1, refuse-unloading platform, 2, dump pit, 3, operating room, 4, garbage crane, 5, fire grate air blast, 6, grate furnace, 7, dispenser, 8, boiler, 9, evaporation reaction tower, 10, administration device, 11, flyash curing storehouse, 12, cloth bag reactor, 13, steam smoke heater, 14, ammonifying device, 15, desulfuring and denitrifying apparatus, 16, air-introduced machine, 17, chimney, 101, lime-ash tapping equipment, 102, magnetic separator, 103, belt conveyor, 104, ashcan, 201, steam header, 202, oxygen-eliminating device, 203, circulating pump, 204, vapor condenser, 205, steam turbine generator, 206, residual heat using device, 207, waterworks, 301, wet sludge bin, 302, mud revolution desiccation machine, 303, fluid bed sludge incinerator, 304, dewatered sludge conveyer belt.
The specific 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 to this.
Embodiment:
As shown in Figure 1,
Mud and rubbish are combined burning thermoelectricity treatment system, comprise refuse burning system, sludge incinerating system, exhaust treatment system, wherein, refuse burning system comprises grate furnace 6, the hot gas passing away of grate furnace is communicated with boiler 8, the steam (vapor) outlet of boiler 8 is communicated with steam header 201, the steam outlet of steam header 201 is divided into steam outlet A, steam outlet B, steam outlet C, steam outlet D, steam outlet A is connected to boiler 8 by the rear backflow of oxygen-eliminating device 202, steam outlet B is connected to the rear backflow of oxygen-eliminating device 202 by vapor condenser 204 and is connected to boiler 8, steam outlet C is connected to oxygen-eliminating device 202 after steam turbine generator 205, steam outlet D is connected to oxygen-eliminating device 202 after residual heat using device 206, sludge incinerating system comprises the wet sludge bin 301 connecting successively, mud revolution desiccation machine 302, fluid bed sludge incinerator 303, the heat supply end of mud revolution desiccation machine 302 is connected with residual heat using device 206, the mud output port of mud revolution desiccation machine 302 is connected with fluid bed sludge incinerator 303 and wet sludge bin 301, the hot waste gas of fluid bed sludge incinerator 303 forms hot flue gas and useless dirt gas after separating, hot flue gas enters boiler 8, useless dirt gas enters exhaust treatment system, exhaust treatment system comprises the evaporation reaction tower 9 connecting successively, cloth bag reactor 12, steam smoke heater 13, desulfuring and denitrifying apparatus 15, air-introduced machine 16, chimney 17, in the connecting pipe of evaporation reaction tower 9 and cloth bag reactor 12, be communicated with administration device 10, steam smoke heater 13 is connected with ammonifying device 14, the solidfied material outlet of evaporation reaction tower 9 and the solidfied material outlet of cloth bag reactor 12 are connected to flyash curing storehouse 11 simultaneously, the useless dirt gas of fluid bed sludge incinerator 303 enters cloth bag reactor 12, and the waste gas of boiler 8 enters evaporation reaction tower 9.
The design principle of this device is: first utilize grate furnace 6 combustion refuses, cause boiler 8 to produce high-temperature steam, and high-temperature steam is introduced to steam header 201, by steam header 201, high-temperature steam is distributed, it is in fact the distribution to energy, wherein the steam of a part enters residual heat using device 206, residual heat using device 206 is carried out heat exchange, transfer of heat is turned round in desiccation machine 302 to mud, in sludge incinerating system, the heat that mud revolution desiccation machine 302 is used incineration firing reaches the object of evaporating the moisture in mud, therefore compare traditional sludge treatment system, in native system, do not need sludge dewatering enrichment facility, therefore greatly reduce the demand of external function, in native system, need be only that more than 99% mud is directly put in mud revolution desiccation machine 302 by the wet interior moisture content of sludge bin 301, utilizing the heat exchange of residual heat using device 206 that mud is turned round to desiccation machine 302 heats up, while causing the moisture percentage in sewage sludge entering in mud revolution desiccation machine 302 to be reduced to below 60%, discharge the mud in mud revolution desiccation machine 302, the mud at this place can so that fire, it is 80% sludge dewatering enrichment facility that the middle mud that can to omit moisture content be 99% changes moisture content into, the infusion of financial resources of saving large number quipments, the heat that while enters the 303 after-combustions generations of fluid bed sludge incinerator by mud reschedules back boiler 8, be able to the heat in supplement boiler 8, reach to borrow heat to cause sludge incineration, the heat producing with sludge incineration returns to boiler 8, reach the object that does not rely on outside ability and play lignin-sludge, simultaneously the ability of sludge creation again can supplement boiler 8, thereby the heat of boiler 8 is not lost.Because the waste gas of sludge incineration and incineration firing generation shares same exhaust treatment system, therefore the Treatment of Sludge part in native system does not need to arrange separately in addition exhaust treatment system, the setup fee that therefore can also save an exhaust treatment system simultaneously.Comprehensive, native system can solve the problem of garbage disposal and Treatment of Sludge simultaneously, but does not affect the problem of incineration firing, and the heat that boiler obtains is not affected, and has reduced equipment cost simultaneously and has not needed the object of outside energy supply.
Preferably, the lime-ash floss hole of grate furnace is communicated with lime-ash tapping equipment 101, and lime-ash tapping equipment 101 is connected with magnetic separator 102, belt conveyor 103, ashcan 104 in turn, and flyash curing storehouse 11 is also communicated to ashcan 104.Magnetic separator 102 separates the metal ingredient in lime-ash, reaches recycling and avoids the problem in heavy metal pollution soil.
Preferably, the charging aperture of grate furnace is provided with dispenser 7, and the input port of dispenser 7 is communicated with dump pit 2, and dump pit 2 tops are provided with garbage crane 4.
Preferably, the air inlet of grate furnace is provided with fire grate air blast 5.
Processing method, comprises the steps:
A, incineration firing producing steam step: enter the rubbish in grate furnace and produce hot air discharge in boiler by grate furnace burning, the water in boiler is become high-temperature steam by steam generator in boiler, high-temperature steam enters steam header, distributed by steam header, it is 4 tunnels that steam header is distributed high-temperature steam, be respectively and mend temperature time recycle circuit, water inlet heat cycles circuit, steam-electric power recycle circuit, mud heat cycles circuit, wherein mending temperature returns recycle circuit and is connected to boiler 8 by steam outlet A by the rear backflow of oxygen-eliminating device 202 and forms, water inlet heat cycles circuit is connected to the rear backflow of oxygen-eliminating device 202 by steam outlet B by vapor condenser 204 and is connected to boiler 8 and forms, vapor condenser 204 is provided with waterworks 207, steam-electric power recycle circuit is connected to oxygen-eliminating device 202 and forms after steam turbine generator 205 by steam outlet C, mud heat cycles circuit is connected to oxygen-eliminating device 202 and forms after residual heat using device 206 by steam outlet D,
In this step, mend temperature time recycle circuit the transmission of part heat is returned to steam generator, cause steam generator can produce fast steam, avoid steam to produce middle interruption, water inlet heat cycles circuit heats supplementing the cold water entering in steam generator, also can avoid steam to be interrupted in the middle of producing, steam-electric power recycle circuit completes waste heat and is converted to the object of electric energy.Mud heat cycles circuit completes heat exchange, transfers heat to the device of mud heating.Oxygen-eliminating device is removed oxygen, prevents oxidation furnaces.
B, sludge incineration step: be that more than 99% mud is directly inputted to mud revolution desiccation machine 302 by moisture content in wet sludge bin, mud revolution desiccation machine 302 is connected to residual heat using device 206 also and heat exchange occurs residual heat using device 206, mud revolution desiccation machine 302 is heated up and is heated the mud of mud revolution desiccation machine 302 inside, after 302 circulations of mud revolution desiccation machine, discharge the mud of moisture content below 60% until mud, the mud of moisture content below 60% is sent in fluid bed sludge incinerator and burns, the hot waste gas that the burning of fluid bed sludge incinerator produces forms hot flue gas and useless dirt gas after separating, hot flue gas enters the interior heating boiler 8 of boiler 8, useless dirt gas is processed and is discharged through exhaust treatment system,
In this step, mud revolution desiccation machine 302 utilizes residual heat using device 206 that the heat that heat exchange gets occurs directly wet mud to be heated, when the moisture content of mud reaches below 60% until wet, be discharged to ignition combustion in fluid bed sludge incinerator, the heat supplement back boiler 8 that sludge incineration in fluid bed sludge incinerator produces, useless dirt gas is through exhaust treatment system processing, and this step completes the processing to mud.
C, exhaust-gas treatment step: the waste gas that is received boiler by evaporation reaction tower, evaporation reaction tower is processed the waste gas of boiler, the waste gas of boiler is separated, isolate flyash curing thing and low dirt waste gas, the flyash curing thing that evaporation reaction tower separates enters flyash curing storehouse, the low dirt waste gas that evaporation reaction tower separates enters cloth bag reactor after by administration device administration, cloth bag reactor receives useless dirt gas simultaneously, cloth bag reactor is isolated flyash curing thing and low dirt waste gas again, the flyash curing thing that cloth bag reactor separates enters flyash curing storehouse, the low dirt waste gas that cloth bag reactor separates is through steam smoke heater, desulfuring and denitrifying apparatus carries out desulphurization denitration processing, finally discharged by chimney.
In this step, evaporation reaction tower carries out pretreatment, separate flyash curing thing and low dirt waste gas, cloth bag reactor is isolated flyash curing thing and low dirt waste gas again, the solidfied material producing during due to sludge incineration is less, in order to alleviate the burden of evaporation reaction tower, the special useless dirt gas that fluid bed sludge incinerator is produced is received by cloth bag reactor.Carry out the processing of tail gas desulphurization denitration by desulfuring and denitrifying apparatus.
Also comprise incineration firing solidfied material drain steps: the solidfied material that grate furnace burning produces enters ashcan through lime-ash tapping equipment, magnetic separator, belt conveyor successively, and magnetic separator adsorbing metal material carries out metal separation processing.
Also comprise grate furnace burning feed step: garbage transporting device is dumped rubbish and entered dump pit from refuse-unloading platform 1, by garbage crane lifting rubbish, rubbish is hung in to the charging aperture of dispenser, dispenser carries out pretreatment.
Mud revolution desiccation machine 302 comprises desiccation apparatus shell, is provided with the central drum that runs through desiccation apparatus shell in desiccation apparatus shell, and central drum external diameter surface cover is provided with some basins.Desiccation apparatus outer casing inner wall is provided with fixed head, and fixed head is between adjacent basin.Desiccation apparatus shell upper end is provided with upper cover, and desiccation apparatus shell lower end is provided with low head, and central drum two ends are clamped on upper cover and low head.The outer diametric plane of central drum is also arranged with driving wheel, and driving wheel is connected with drive motors.Described upper cover is provided with steam inlet, and steam inlet is communicated with central drum.Low head is provided with steam (vapor) outlet, and steam (vapor) outlet is communicated with central drum.Desiccation apparatus shell is also provided with mud import, ventilates to, ventilation import, mud mouth.Fixed head is away from having gap between one end of desiccation apparatus shell and central drum, and angle between fixed head upper surface and central drum axis is less than 90 degree and is greater than 0 degree.Angle between fixed head upper surface and central drum axis is 80 degree.
After sewage treatment plant's sedimentation basin mud tentatively concentrates, after mechanism filter-pressing, moisture content drops to 80%～85%, mud further reduces moisture content in desiccation apparatus, mud is transported to mud import, drive motors drives driving wheel to rotate, central drum is under the drive of driving wheel, under the support of upper cover and low head, rotate, the high-temperature steam that central drum utilizes steam inlet to pass into, reject heat to basin, after basin heating, because mud flow on basin, and flow on basin, from top to bottom, mud some basins that flowed successively, being dried slowly, finally arrive desiccation apparatus intracavity bottom, arriving sludge outlet place discharges.In mobile process, under the guide effect of fixed head, there is reversal of direction of flow in mud, finally flows on the basin of next stage, so repeated multiple times, to reach the object of multilevel drying.
Mud and steam carry out heat exchange, entering air from ventilation import takes water vapour out of, after mummification, moisture percentage in sewage sludge drops to 45%～55%, mud is collected and is discharged from mud mouth at dewatered sludge feeder, the hot blast that contains moisture is collected in collecting hood, with air blast, waste gas is extracted out from hot-blast outlet, part waste gas is circulated back to circulation machine from backwind tube, contain moisture waste gas through exhaust gas washing tower and waste gas absorption bed process up to standard after discharge.
As mentioned above, can well realize the utility model.
Claims (4)
1. mud and rubbish are combined burning thermoelectricity treatment system, it is characterized in that: comprise refuse burning system, sludge incinerating system, exhaust treatment system, wherein, refuse burning system comprises grate furnace (6), the hot gas passing away of grate furnace is communicated with boiler (8), the steam (vapor) outlet of boiler (8) is communicated with steam header (201), the steam outlet of steam header (201) is divided into steam outlet A, steam outlet B, steam outlet C, steam outlet D, steam outlet A is by refluxing and be connected to boiler (8) after oxygen-eliminating device (202), after steam outlet B is connected to oxygen-eliminating device (202) by vapor condenser (204), backflow is connected to boiler (8), steam outlet C is connected to oxygen-eliminating device (202) after steam turbine generator (205), steam outlet D is connected to oxygen-eliminating device (202) after residual heat using device (206), sludge incinerating system comprises the wet sludge bin (301) connecting successively, mud revolution desiccation machine (302), fluid bed sludge incinerator (303), the heat supply end of mud revolution desiccation machine (302) is connected with residual heat using device (206), the mud output port of mud revolution desiccation machine (302) is connected with fluid bed sludge incinerator (303) and wet sludge bin (301), the hot waste gas of fluid bed sludge incinerator (303) forms hot flue gas and useless dirt gas after separating, hot flue gas enters boiler (8), useless dirt gas enters exhaust treatment system, exhaust treatment system comprises the evaporation reaction tower (9) connecting successively, cloth bag reactor (12), steam smoke heater (13), desulfuring and denitrifying apparatus (15), air-introduced machine (16), chimney (17), in the connecting pipe of evaporation reaction tower (9) and cloth bag reactor (12), be communicated with administration device (10), steam smoke heater (13) is connected with ammonifying device (14), the solidfied material outlet of evaporation reaction tower (9) and the solidfied material outlet of cloth bag reactor (12) are connected to flyash curing storehouse (11) simultaneously, the useless dirt gas of fluid bed sludge incinerator (303) enters cloth bag reactor (12), and the waste gas of boiler (8) enters evaporation reaction tower (9).
2. mud according to claim 1 and rubbish are combined burning thermoelectricity treatment system, it is characterized in that: the lime-ash floss hole of grate furnace is communicated with lime-ash tapping equipment (101), lime-ash tapping equipment (101) is connected with magnetic separator (102), belt conveyor (103), ashcan (104) in turn, and flyash curing storehouse (11) are also communicated to ashcan (104).
3. mud according to claim 1 and rubbish are combined burning thermoelectricity treatment system, it is characterized in that: the charging aperture of grate furnace is provided with dispenser (7), the input port of dispenser (7) is communicated with dump pit (2), and dump pit (2) top is provided with garbage crane (4).
4. mud according to claim 1 and rubbish are combined burning thermoelectricity treatment system, it is characterized in that: the air inlet of grate furnace is provided with fire grate air blast (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320867072.7U CN203615342U (en) | 2013-12-26 | 2013-12-26 | Sludge and garbage combined incineration thermoelectric treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320867072.7U CN203615342U (en) | 2013-12-26 | 2013-12-26 | Sludge and garbage combined incineration thermoelectric treatment system |
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| CN203615342U true CN203615342U (en) | 2014-05-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712216A (en) * | 2013-12-26 | 2014-04-09 | 四川四通欧美环境工程有限公司 | Sludge and waste united incineration thermoelectric processing system and method |
| CN106871125A (en) * | 2017-02-07 | 2017-06-20 | 北京高安屯垃圾焚烧有限公司 | A kind of incinerator sludge directly mixes co-combustion method and system |
| CN107830525A (en) * | 2017-11-17 | 2018-03-23 | 华南理工大学 | A kind of rubbish cooperates with incineration treatment method and device with semi-dry sludge |
-
2013
- 2013-12-26 CN CN201320867072.7U patent/CN203615342U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712216A (en) * | 2013-12-26 | 2014-04-09 | 四川四通欧美环境工程有限公司 | Sludge and waste united incineration thermoelectric processing system and method |
| CN103712216B (en) * | 2013-12-26 | 2016-04-06 | 四川四通欧美环境工程有限公司 | Mud and rubbish combine incineration thermoelectric treatment system and processing method |
| CN106871125A (en) * | 2017-02-07 | 2017-06-20 | 北京高安屯垃圾焚烧有限公司 | A kind of incinerator sludge directly mixes co-combustion method and system |
| CN107830525A (en) * | 2017-11-17 | 2018-03-23 | 华南理工大学 | A kind of rubbish cooperates with incineration treatment method and device with semi-dry sludge |
| WO2019095964A1 (en) * | 2017-11-17 | 2019-05-23 | 华南理工大学 | Treatment method and device for cooperatively burning garbage and semi-dry sludge |
| RU2741936C1 (en) * | 2017-11-17 | 2021-01-29 | Саус Чайна Юниверсити Оф Текнолоджи | Method and device for co-combustion of wastes and semi-dry waste sludge |
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