KR101534197B1 - System for recycling sludge using waste resources and recovered heat of waste gas - Google Patents

Abstract

The present invention relates to a system for recycling sludge using waste resources and recovered heat of waste gas, which dries sludge to use the same as fuel with waste resources, dries the dehydrated sludge with heat energy generated by combustion of the waste resources and the sludge in order to stably treat the waste resources and the sludge in an indirect heating and drying method, uses the waste resources fuel generated in a process of recycling of residential wastes, and recovers all kinds of heat sources generated and wasted during a process in order to reuse the same. The system of the present invention comprises: a combustion unit for generating heat by combusting waste resources or the dried sludge, and transferring the generated heat to a lower level; a heating unit for generating steam through the heat of combustion discharged gas generated from the combustion unit, transferring the steam to a drying unit for drying sewage sludge, and removing dust and toxic gas included in the combustion discharged gas of the combustion unit in order to discharge the same; a drying unit for drying the dehydrated sludge introduced through the steam transferred from the heating unit; an inlet for supplying the dehydrated sludge to the drying unit, storing the dehydrated sludge supplied from the outside, mixing the dried sludge and the dehydrated sludge in order to supply the same to a dryer; and a storing unit for storing the dried sludge through the dryer and then transferring the same to the outside, and recirculating the partial dried sludge to the combustion unit in order to use the same as fuel.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a sludge recovery system using waste heat and waste gas recovery heat,

The present invention relates to a sludge resource recovery system using waste heat and waste gas recovering heat. The sludge is dried and used as fuel together with waste resources, and indirect heat drying is performed by drying dehydrated sludge with thermal energy burned with waste resources and sludge The present invention relates to a sludge resource recovery system using a waste resource and a waste gas recovery heat recovered from various waste heat sources generated during a process using waste fuel generated during recycling of household waste.

Generally, sludge generated from sewage sludge, food waste, livestock manure, landfill leachate, and other organic wastes contains a large amount of water and is buried or incinerated to treat such sludge.

These disposal and incineration treatment methods have caused serious environmental pollution and discarded resources that can be recycled.

In order to solve such a problem, Korean Patent Registration No. 10-0904064 discloses a sludge treatment method in which oil is mixed with sludge, the sludge is dried by heating, evaporating and drying to evaporate water, and then fired and sludge treated to de- This paper proposes an organic sludge deaeration method.

However, in this method, the sludge mixed with the oil is heated in the evaporator to evaporate the moisture contained in the sludge to less than 0.1%. Therefore, when the sludge introduced into the evaporator is completely treated, After adding new sludge mixed with oil, it was forced to heat again with evaporator dryer.

That is, in a state where the evaporator drier is cooled, a mixture of oil and sludge is supplied to the evaporator to remove moisture, and then the drier sludge is removed while the evaporator drier is cooled and the sludge mixed with the new oil is supplied and heated Not only can not the evaporator be used continuously, but also the heat source is wasted because it is necessary to reheat the evaporator which has lowered the temperature.

In addition, since the oil and sludge are heated with the oil and the sludge being heated by the evaporator, there is a problem in that an additional facility is required to form the steam because the steam must be heated indirectly using high temperature steam.

Related prior arts include Korean Patent Registration No. 10-1341018 and Korean Patent Registration No. 10-1157658.

The present invention can dry the dehydrated sludge with the thermal energy by drying the sludge together with the waste resources and using the thermal energy that burns the waste resources and the sludge, so that it can be stably treated by the indirect heating and drying method, The present invention is to provide a sludge resource recovery system using waste fuel and waste heat recovery heat for recovering and reusing various heat sources generated in the process and discarded.

The technical objects to be achieved by the present invention are not limited to the above-mentioned technical problems.

In order to achieve the above object, the present invention provides a sludge resource recovery system using waste resources and waste gas recovery heat, comprising: a combustion unit for generating heat by burning waste resources or dried sludge and transferring the generated heat downward; A heating unit for generating steam through the heat of the combustion exhaust gas generated in the burning unit, delivering steam to a drying unit for drying the sewage sludge, removing dust and noxious gas contained in the combustion exhaust gas of the combustion unit, A drying unit for drying the dehydrated sludge introduced through the steam delivered from the heating unit, and a drying unit for supplying dehydrated sludge to the drying unit, storing the dehydrated sludge supplied from the outside, mixing the dried sludge and dehydrated sludge, And a sludge drying unit for storing the sludge dried by the drying unit and then discharging the dried sludge to the outside, And a storage unit for recycling the fuel to the combustion unit and using the fuel as the fuel.

Specifically, the combustion unit includes a waste resource storage tank for storing waste resources to be supplied from the outside, a discharge conveyor for discharging waste resources stored in the waste resource storage tank, waste resources transferred to the waste resource combustion furnace, A waste material combustion furnace for burning waste materials or dried sludge conveyed through the conveying body and for burning the odor generated in the drying section; And a heating furnace for burning offensive odors generated in the drying part by burning fuel outside when the burning furnace is not operated or if necessary, and for producing steam by using heat generated in the burning.

The heating unit includes a steam boiler for generating steam through the heat of the combustion exhaust gas discharged from the combustion unit and supplying the steam to the drying unit, an air preheater for recovering waste heat of the combustion exhaust gas passing through the steam boiler and delivering the waste heat to the drying unit, A dust collector for neutralizing the harmful substances contained in the combustion exhaust gas passing through the dust collector and lowering the temperature of the combustion exhaust gas to a predetermined temperature or lower; A filtration and dust collector for collecting and discharging fine dust contained in the exhaust gas discharged from the harmful material reactors after the removal of harmful substances, and a heat recovery unit for recovering the heat of the steam condensed water produced in the steam boiler, A waste heat recovering unit for re-transferring the waste to the drying unit, And a dust transfer conveyor for transferring and discharging dust generated in the steam boiler, the air preheater, the harmful material reactor, the dust collector, and the filter dust collector.

The waste heat recoverer includes a waste heat recoverer for delivering steam supplied from the steam boiler to the drying unit and recovering the heat of the steam condensed water condensed by the steam used in the drying unit, And a condensate reservoir for flowing the waste heat recoverer and the condensate recovery tank and the boiler.

The drying unit includes a hot air preheater dryer for preheating and partially drying the dehydrating sludge introduced from the input unit through the heat recovered from the high temperature combustion exhaust gas supplied from the heating unit, An indirect heating dryer for indirectly heating and drying the sludge passing through the circulation jacket and the inner disk by circulating steam supplied from the indirect heating dryer to the storage unit, A transfer conveyor and a scrubber for mixing the dry gas and the cleansing water generated at the time of drying the sludge in the indirect heat drier to discharge foreign matter and dust contained in the dry gas to the outside and transferring the cleaned dry gas to the burning unit, . ≪ / RTI >

A sludge discharge conveyor for conveying the dewatered sludge of the sludge storage tank to a transfer pump and a sludge discharge conveyor for transferring the dewatered sludge discharged from the sludge storage tank to a lower portion of the sludge discharge conveyor, And a mixed conveying device for conveying the dewatered sludge conveyed through the sludge conveying pump and the dried sludge conveyed by the drying unit to the drying unit.

According to the present invention as described above, the sludge is dried and used as fuel together with waste resources, steam is produced by thermal energy generated by burning waste resources or dried sludge, and the sludge is dried, There is an advantage of using energy of waste resources generated in recycling process of waste to reduce energy cost.

In addition, since various heat sources that are generated and discarded during the process are recovered and reused, there is an advantage that the energy recovery rate can be maximized and economical efficiency can be secured.

1 is a view showing the construction of a sludge resource recovery system using waste resources and waste gas recovery heat according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a view showing a sludge resource recovery system using a waste resource and a waste gas recovery column according to an embodiment of the present invention. FIG. 1 is a schematic view of a sludge recovery system using burned resources or dried sludge to generate heat, And the heat of the combustion unit 100 is transferred to the heating unit 200. Steam is generated through the heat of the combustion exhaust gas generated in the combustion unit 100 and the dust and noxious gas contained in the combustion exhaust gas And a drying unit 500 for drying the dehydrated sludge supplied from the loading unit 400 through the steam and the recovered heat transferred from the heating unit 200 A drying unit 300, a charging unit 400 for supplying dehydrated sludge to the drying unit 300 and a storage unit 500 for storing and discharging dried sludge dried in the drying unit 300.

The burning unit 100 includes a waste resource storage tank 110 storing waste resources input from the outside, an extraction conveyor 120 extracting waste resources stored in the waste resource storage tank 110, And a feed conveyor which feeds the dry sludge conveyed from the storage unit 500 and feeds the waste sludge to the drying unit 500. The dry sludge conveyed through the conveying unit is burnt, And a burner 130 for burning outside fuel when the waste burning furnace 140 is not operated to generate odor removing steam and steam, .

When waste resources transported from the outside are stored in the waste resource storage tank 110, waste resources required for the combustion are taken out through the transfer conveyor 120 of the transfer material and charged into the waste resource combustion furnace 140, The dry sludge conveyed from the storage part 500 is also introduced into the waste burning furnace 140 through the input conveyor.

The waste resources or the dry sludge introduced into the waste burning furnace 140 are burnt in the waste burning furnace 140.

At this time, when the fuel supplied from the external fuel tank is burned through the ignition burner 150, the waste resource or the drying sludge is burned together with the burned waste burning furnace, and when the waste resource and the dry sludge are burned, Is supplied to the steam boiler (210) of the heating unit (200) through the heating burner (160) operated by receiving the fuel of the fuel tank.

When the combustion exhaust gas is re-burned and heated, the odor and sludge dust generated in the drying unit 300 are burned together with the exhaust gas.

When the waste resource combustion furnace 140 is in an emergency state and the operation is stopped and if necessary, the external fuel is combusted to transfer the heat generated during the combustion to the steam generator 132 of the heating furnace 130.

The deodorization furnace 131 and the steam generator 130 are installed in the heating furnace 130 to prevent the entire system from being stopped due to the odor generated in the drying unit 300 even if the waste burning furnace 140 is stopped. 132 are connected.

The fuel supplied to the heating furnace 130 is supplied with LNG or LPG. When installed in a sewage treatment plant having an anaerobic digestion tank, biogas is supplied.

The combustion exhaust gas generated by burning waste resources or drying sludge in the combustion unit 100 heats the heating unit 200 and supplies it to the drying unit 300.

The heating unit 200 includes a steam boiler 210 for generating steam through the heat of the combustion exhaust gas discharged from the combustion unit 100 and supplying the generated steam to the drying unit 300, An air preheater for collecting the waste heat of the combustion exhaust gas and delivering the waste heat to the drying unit 300, a dust collector 230 for collecting dust of a predetermined size or less contained in the combustion exhaust gas passing through the air preheater, A harmful material reactor 240 for neutralizing the harmful substances contained in the combustion exhaust gas and lowering the temperature of the combustion exhaust gas to a predetermined temperature or lower; and a micro-reactor 240 for removing harmful substances from the harmful- A filtering and dust collecting unit 230 for collecting and discharging dust and a waste heat recovering unit for recovering the heat of the steam condensed water condensed by the steam used in the steam boiler 210 and the drying unit 300 and delivering the heat to the drying unit 300 260), pests The dust generated from the remover feeder 270 for supplying a harmful substance remover to the reactor 240 and the filter and the steam boiler 210, the air preheater 220, the dust collector 230, And a dust transfer conveyor 243 for discharging the dust.

The combustion exhaust gas generated in the waste resource combustion furnace 140 of the combustion unit 100 is supplied to the steam boiler 210 of the heating unit 200 and the steam exhaust gas is heated by the combustion exhaust gas The steam is supplied to the indirect heating and drying unit 320 of the drying unit 300.

When steam is generated in the steam boiler 210 through the heat of the combustion exhaust gas, the dust contained in the combustion exhaust gas is partially filtered and discharged to the outside of the steam boiler 210, and the dust thus discharged passes through the dust transfer conveyor 243 .

The combustion exhaust gas passing through the steam boiler 210 passes through the air preheater 220, preheats the air, and is supplied to the preheating dryer of the drying unit 300.

Part of the dust is filtered by the air preheater 220 when the air discharge gas is passed through the air preheater 220, and the dust is discharged to the outside through the dust transfer conveyor 243.

The combustion exhaust gas passing through the air preheater 220 is collected in the dust collector 230 and discharged to the outside through the dust transfer conveyor 243 in the process of passing dust of a predetermined size or less through the dust collector 230.

The combustion exhaust gas that has passed through the dust collector 230 passes through a toxic material reactor 240 for injecting a harmful substance remover supplied from a remover supply unit 270 to remove toxic substances contained in the combusted exhaust gas and reacting with the combustion exhaust gas So that some harmful substances are adsorbed on the harmful substance remover and are discharged to the outside.

The toxic material reactor 240 includes a reaction tower 241 for reacting a harmful substance removing agent to be firstly injected with a combustion exhaust gas, and an injector 242 for reacting a harmful substance removing agent to be injected secondarily with a combustion exhaust gas .

When the reaction tower 241 is injected with a toxic substance remover made of a liquid in a state of being sprayed therein, the combustion exhaust gas passes through the reaction tower 241 and reacts with the toxic substance remover and is adsorbed on the toxic substance remover. Is formed in the form of dust that is dried by the heat of the combustion exhaust gas and is discharged to an external dust transfer conveyor 243.

The injector 242 receives the harmful substance removing agent made of powder and the activated carbon and reacts with the combustion exhaust gas, which is the first harmful substance removed from the reaction tower 241, to remove the harmful substances.

The harmful substances contained in the combustion exhaust gas reacted with the hazardous substance removing agent and the activated carbon introduced into the injector 242 are collected through the filter and dust collector 230 and discharged to the outside through the dust conveyance conveyor 243.

The harmful substance remover supplied from the remover feeder 270 is made of slaked lime and the liquid harmful substance remover supplied to the reaction tower 241 is reacted with the liquefied lime through the liquid feeder 271 of the remover feeder 270 And is supplied to the tower 241.

The powdery harmful substance remover supplied to the injector 242 is supplied to the injector 242 via the powder feeder 272 of the remover feeder 270 and the activated carbon is supplied to the injector 242 through the activated carbon feeder 273. [ ).

The combustion exhaust gas collected through the filter and dust collector 230 is discharged to the guide chimney through the fan 280.

The waste heat recovering unit 260 connected to the rear end of the steam boiler 210 of the heating unit 200 transfers the steam supplied from the steam boiler 210 to the drying unit 300, A waste heat recoverer 260 for recovering the heat of the steam condensed water in which the steam is condensed and a condensate water reservoir 261 for storing the steam condensate and flowing the stored steam condensate to the waste heat recoverer 260 and the condensate recovery tank and the boiler do.

The waste heat recoverer 260 recovers the heat of the steam condensate flowing through the condensate storage 261 to heat the steam flowing in the steam boiler 210 to flow to the drying unit 300.

The condensed water storage vessel 261 stores steam condensed water and flows the steam condensed water remaining in the heat to the waste heat recovered body. When the amount of the steam condensed water is increased, the condensed water storage vessel 261 flows to an external recovery tank for storage and discharge. Of the boiler.

The drying unit 300 for drying the dewatered sludge through the steam of the heating unit 200 supplies the dewatered sludge from the input unit 400.

The input unit 400 includes a sludge storage tank 410 for transferring and storing sludge dewatered from the outside, a sludge discharge conveyor 430 for transferring the dewatered sludge of the sludge storage tank 410 to the transfer pump, a sludge discharge conveyor A sludge transfer pump 440 for transferring the dewatered sludge discharged from the sludge storage tank 410 downward through the sludge transfer pump 440 and a dewatering sludge conveyed through the sludge transfer pump 440, And a mixed conveying device 450 for conveying the sludge mixed to the drying unit 300.

The dehydrated sludge stored in the sludge storage tank 410 is discharged to the sludge discharge conveyor 430 through the sludge discharger 420 formed at the lower side of the sludge storage tank 410 and discharged from the sludge discharge conveyor 430 440 is transferred to the mixed conveying device 450 through the sludge conveying pump 440. [

The dewatered sludge introduced into the mixed conveying unit 450 is mixed with the dry sludge conveyed in the drying unit 300 in the mixed conveying unit 450 and transferred to the drying unit 300.

The reason why the dewatered sludge and the dried sludge are mixed and conveyed to the drying unit 300 through the mixed conveying unit 450 is to mix the dewatered sludge (water content 80 to 85%) and the dried sludge (moisture content 8 to 15% The dewatering sludge is supplied to and mixed with the dewatering sludge 450 at the same time so that the increase in the torque due to the adhesion of the dewatered sludge and the bending of the sludge to the heat transfer surface of the disk of the indirect heat dryer 320, Thereby preventing the failure of the equipment and preventing the drying efficiency from lowering due to the adhesion of the sludge to the heat transfer surface, thereby reducing the fuel cost.

The drying unit 300 includes a hot wind preheater 310 for preheating and partially drying the dewatered sludge introduced from the input unit 400 through the heat recovered from the high temperature combustion exhaust gas f supplied from the heating unit 200, The sludge passed through the hot air preheating dryer 310 is circulated through the circulation jacket formed in the outside and the inner disk formed by the heating unit 200 to indirectly heat and dry the sludge passing through the inside A feed conveyor 520 for conveying the sludge dried in the indirect heat dryer 320 to the storage 500 and a drying gas and cleansing water generated in drying the sludge in the indirect heat dryer 320 And a scrubber 330 for discharging the foreign substances and dust contained in the dry gas to the outside and delivering the cleaned dry gas to the combustion unit 100.

The hot air preheating dryer 310 recovers and supplies the waste heat of the high temperature combustion exhaust gas through the air preheater 220 of the heating unit 200 to the dehydrating sludge mixed and transported in the mixed conveying unit 450 to preheat the dehydrated sludge To the indirect heating dryer (320).

If the dewatered sludge is heated in advance in the hot air preheater dryer 310, the water content of the dewatered sludge is lowered in advance, so that the fuel cost required for drying can be reduced.

The dewatered sludge that has been preheated in the hot air preheating dryer 310 is supplied to the indirect heat dryer 320 and the steam supplied from the steam boiler 210 of the heating unit 200 is circulated through the circulation jacket And the preheated dehydrated sludge passing through the interior is heated and dried by heating the main body.

At this time, a disk for feeding the dewatered sludge from the inside of the body is formed inside the body of the indirect heat dryer 320, and the dewatered sludge in contact with the disk is dried by heating the disk together with the body.

The circulating jacket of the indirect heating dryer 320 and the steam circulating inside the disk are passed through the indirect heat dryer 320 and the heat is transferred to the indirect heat dryer 320 and condensed.

The steam condensate thus condensed flows into the condensate storage body 261 of the heating section 200 and is stored.

When the dewatering sludge is dried in the indirect heat dryer 320, dry gas may be generated. The dry gas removes dust through a dust collector 321 that removes dust, And the foreign substances and dust contained in the dry gas are discharged to the outside, and the cleaned dry gas is transferred to the combustion unit 100 to be burned.

The cleaner 330 is connected to a cleansing water tank 332 through which cleansing water is supplied and stored from the outside and a cleansing water supply pump 331 for supplying cleansing water from the cleansing water tank 332 to the cleaner 330 The washing water is supplied.

The washing machine 330 injects the washing water supplied through the washing water supply pump 331 from the upper side to clean the drying gas passing through the inside thereof.

The dried sludge that has been dried in the indirect heat dryer 320 is partially conveyed to the mixed conveying device 450 through the conveying conveyor 340 and the other dried sludge is conveyed to the storage part 500 through the feed conveyor 520 Lt; / RTI >

The storage unit 500 stores the dried sludge through a dryer and then takes it out to the outside and recycles a part of the dried sludge to the combustion unit 100 through the supply conveyor 510 to use it as fuel.

As described above, according to the present invention, the sludge is dried and used as fuel together with waste resources, and the dehydrated sludge is dried by the thermal energy that burns the waste resources and the sludge, so that it can be stably treated by the indirect heating and drying method. There is an advantage of using energy of waste resources generated in the process to reduce the energy cost.

In addition, since various heat sources that are generated and discarded during the process are recovered and reused, there is an advantage that the energy recovery rate can be maximized and economical efficiency can be secured.

The sludge resource recovery system using the waste resources and the waste gas recovery heat is not limited to the construction and operation of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100: Combustion part 110: Waste resource reservoir
120: Drawing conveyor
130: Heating furnace 131: Deodorization furnace
132: Steamer
140: waste burning furnace 150: ignition burner
160: Heating burner
200: heating section 210: steam boiler
220: air preheater 230: dust collector
240: Hazardous substance reactor 241: Reaction tower
242: Feeder 243: Dust transfer conveyor
250: Filter and dust collector
260: waste heat recovery device 261: condensate storage device
270: remover feeder 271: liquid feeder
272: Powder feeder 273; Activated carbon feeder
280: Fan
300: Drying unit 310: Hot air preheating dryer
320: indirect heating dryer 321: dust collector
330: washer 331: rinse water supply pump
332: Cleaning water tank
340: conveying conveyor
400: input portion 410: sludge storage tank
420: sludge discharger 430: sludge discharge conveyor
440: Sludge transport pump 450: Mix transport device
500: storage part 510: combustion furnace conveyor
520: Feed conveyor

Claims (6)

A combustion unit for generating heat by burning waste resources or dried sludge and transferring the generated heat downward;
A heating unit which generates steam through heat of the combustion exhaust gas generated in the combustion unit, transfers steam to a drying unit for drying the sewage sludge, removes dust and noxious gas contained in the combustion exhaust gas of the combustion unit, and discharges the steam;
A drying unit for drying the dewatered sludge introduced through the steam delivered from the heating unit;
An input unit for supplying dehydrated sludge to the drying unit, storing the dehydrated sludge supplied from the outside, mixing the dried sludge and dehydrated sludge, and supplying the dehydrated sludge to the drier; And
And a storage unit for storing the dried sludge through the dryer and then transporting the dried sludge to the outside and recycling a portion of the dried sludge to the combustion unit to use the fuel as fuel,
The heating unit may include: a steam boiler for generating steam through the heat of the combustion exhaust gas discharged from the combustion unit and supplying the generated steam to the drying unit;
An air preheater for recovering waste heat of the combustion exhaust gas passing through the steam boiler and delivering the waste heat to the drying unit;
A dust collector for collecting dust of a predetermined size or less contained in the combustion exhaust gas passing through the air preheater;
A harmful material reactor for neutralizing the harmful substances contained in the combustion exhaust gas passing through the dust collector and lowering the temperature of the combustion exhaust gas to a predetermined temperature or less;
A dust collector for collecting and discharging the fine dust contained in the combustion exhaust gas discharged from the harmful material reactor after the harmful substances are removed;
A waste heat recovering unit that recovers the heat of the steam condensed water produced in the steam boiler and used in the drying unit, and transfers the collected heat to the drying unit;
A remover feeder for supplying a harmful substance remover to the harmful substance reactors and the filter dust collector; And
And a dust transfer conveyor for transferring and discharging dust generated in the steam boiler, the air preheater, the hazardous material reactor, the dust collector, and the filter dust collector,
The waste heat recoverer includes a waste heat recoverer for delivering the steam supplied from the steam boiler to the drying unit and recovering the heat of the steam condensed water used in the drying unit. And
And a condensate reservoir for storing the steam condensate and flowing the stored steam condensate to the waste heat recoverer, the condensate recovery tank and the boiler,
The drying unit may include a hot wind preheater for preheating the partially dried dehydrating sludge through the heat recovered from the hot discharge gas supplied from the heating unit to partially dry the dehydrated sludge;
An indirect heating dryer for indirectly heating and drying the sludge that has passed through the hot air preheating dryer by circulating steam supplied from the heating unit to a circulating jacket formed in the outside and a disk inside,
A transfer conveyor for transferring the sludge dried in the indirect heat dryer to the storage unit; And
And a scrubber for mixing the drying gas generated in drying the sludge in the indirect heat dryer with the washing water to discharge the foreign substances and dust contained in the drying gas to the outside and transferring the washed drying gas to the combustion unit to be burnt, Sludge reuse system using waste resources and waste gas recovery heat.
The method according to claim 1,
Wherein the combustion unit comprises: a waste resource reservoir storing waste resources input from the outside;
A transfer conveyor comprising a discharge conveyor for discharging waste resources stored in the waste resource storage tank, an input conveyor for transferring the waste sludge transferred from waste resources and a storage unit transferred to the waste resource combustion furnace;
A waste burning furnace for burning waste resources or dry sludge conveyed through the conveying body and burning odors generated in the drying section; And
And a heating furnace for burning offensive odors generated in the drying unit when the waste burning furnace is not operated, or if necessary, for burning outside fuel, and producing steam by using heat generated during combustion, And sludge resource recovery system using waste gas recovery heat.
The method according to claim 1,
A sludge storage tank in which the dehydrated dehydrated sludge is stored;
A sludge discharge conveyor for transferring the dewatered sludge of the sludge storage tank to the transfer pump;
A sludge transfer pump for transferring the dewatered sludge discharged from the sludge storage tank through the sludge discharge conveyor downward; And
And a mixed conveying device for mixing the dewatered sludge conveyed through the sludge conveying pump and the dried sludge conveyed by the drying part to the drying unit. delete delete delete

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