JP2005321131A - Sludge incinerating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sludge incinerating system self-sustaining on an energy basis. <P>SOLUTION: The sludge incinerating system for incinerating sewage sludge comprises a spin-dryer for mechanically dewatering the sewage sludge into dewatered cakes having a water content allowing self-heat combustion, an incinerator for incinerating the dewatered cakes dewatered by the spin-dryer without using auxiliary fuel, an exhaust heat boiler for generating steam with exhaust gas from the incinerator, and a generator for generating power with the steam generated by the exhaust heat boiler. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sludge incineration system for incinerating sewage sludge.

Incineration of sewage sludge generated in a sewage treatment plant is essential not only for reducing the volume of sewage sludge but also for making it a safe and harmless substance for sanitation.
Conventionally, for example, as disclosed in Japanese Patent Application Laid-Open No. 9-89232, heat recovery is performed at the time of incineration of sewage sludge. A typical example of this heat recovery is to provide a waste heat boiler in an exhaust gas system and drive a generator connected to a steam turbine by generated steam to generate power.
JP-A-9-89232

However, such a conventional sludge incineration system has a problem that it is difficult to obtain high power generation efficiency when viewed as a whole system.
That is, the conventional sludge incineration system is planned with priority on the processing capacity in order to reduce the construction cost of the sludge dewatering equipment, and the moisture content of the dewatered cake obtained in the sludge dewatering equipment is, for example, 75 to 85%. It is extremely high, can be barely incinerated using auxiliary fuel, and is not capable of actively supplying energy to the outside.

On the other hand, by dehydrating the dehydrated cake in advance with a dryer, the moisture content is lowered and supplied to the incinerator, so that a calorific value equivalent to lignite can be obtained, but a large amount of heat is required for drying, and the sludge incineration system It is not energy saving.
As a result of earnest research to solve such conventional problems, the present inventor sacrificed the treatment capacity of the sludge dewatering equipment, and the water content of the dewatered cake obtained in the sludge dewatering equipment can be self-heated, for example, It has been found that by making it lower than 65%, it is possible to obtain a high power generation efficiency as a whole sludge incineration system, and thereby it is possible to construct an energy independent sludge incineration system.

In other words, the moisture content of the dehydrated cake is self-heated in the sludge dewatering equipment compared to the heat energy when the dehydrated cake is dried in a dryer or incinerator to reduce the moisture content of the dehydrated cake to a moisture content that can be self-heated. We found that the mechanical energy to lower the combustible water content is several steps lower. This reason will be described in detail later.
This invention is made | formed based on this knowledge, and it aims at providing the sludge incineration system which became energetically independent.

  The sludge incineration system according to claim 1 is a dehydrator that mechanically dehydrates sewage sludge to form a dehydrated cake having a water content that can be self-heated, and the dehydrated cake dehydrated by the dehydrator without using auxiliary fuel. An incinerator for incineration, a waste heat boiler that generates steam from exhaust gas from the incinerator, and a power generation device that generates power using the steam generated in the waste heat boiler are provided.

The sludge incineration system according to claim 2 is characterized in that, in the sludge incineration system according to claim 1, the moisture content of the dehydrated cake is a moisture content below a self-combustion point of about 65% by weight.
The sludge incineration system according to claim 3 is the sludge incineration system according to claim 1 or claim 2, wherein the dehydrator is capable of obtaining a dehydrated cake having a moisture content of about 65% by weight or less and having a moisture content below the self-combustion point. It is a type dehydrator.

The sludge incineration system according to claim 4 is the sludge incineration system according to any one of claims 1 to 3, wherein the incinerator is a fluidized bed incinerator.
The sludge incineration system according to claim 5 is the sludge incineration system according to any one of claims 1 to 4, wherein the dehydrator is provided in the vicinity of the incinerator.

  The sludge incineration system according to claim 6 is the sludge incineration system according to claim 4 or claim 5, wherein the fluidized / white smoke is supplied to the fluidized bed incinerator and the white smoke prevention air to the chimney. A heat exchanger for exchanging heat between the prevention blower, the exhaust gas passing through the waste heat boiler and the air supplied from the flow / white smoke prevention blower, and removing dust contained in the exhaust gas passing through the heat exchanger A bag filter, a flue gas treatment tower that cools exhaust gas passing through the bag filter and removes harmful gas, and an induction fan that sucks the flue gas from the flue gas treatment tower and guides it to the chimney To do.

(Function)
In the sludge incineration system according to the first aspect, the sewage sludge is mechanically dehydrated by a dehydrator to form a dehydrated cake having a water content capable of self-heat combustion. Then, the dehydrated cake dehydrated by the dehydrator is incinerated by self-heat combustion in the incinerator without using auxiliary fuel such as heavy oil or city gas. The exhaust gas generated in the incinerator is guided to a waste heat boiler, and power is generated by guiding steam generated in the waste heat boiler to a power generator.

In the sludge incineration system of claim 2, the moisture content of the dehydrated cake is set to a moisture content not higher than the self-combustion point of about 65% by weight.
In the sludge incineration system of claim 3, the dehydrator is a mechanical dehydrator capable of obtaining a dehydrated cake having a moisture content of about 65% by weight or less and having a moisture content below the self-combustion point, for example, a pressure filter.
In the sludge incineration system of claim 4, the incinerator is a fluidized bed type incinerator.

In the sludge incineration system of claim 5, the dehydrator is provided in the vicinity of the incinerator.
In the sludge incineration system according to the sixth aspect, the air sucked into the flow / white smoke prevention blower is heat-exchanged and heated with the exhaust gas passing through the waste heat boiler in the heat exchanger. The heated air is supplied to the fluidized bed incinerator as fluidizing air, and is also supplied to the chimney as white smoke prevention air. The exhaust gas that has passed through the heat exchanger is guided to the bag filter and the dust contained in the exhaust gas is removed. Then, the exhaust gas is cooled in the flue gas treatment tower to remove harmful gas, and is sucked by the induction fan and guided to the chimney. To be released.

  In the sludge incineration system of claim 1, the sewage sludge is mechanically dehydrated by a dehydrator to obtain a dehydrated cake having a water content that can be self-heated, and the dehydrated cake is incinerated in an incinerator without using auxiliary fuel. Since the exhaust gas from the furnace is guided to the waste heat boiler and power is generated by the power generator using the steam generated in the waste heat boiler, high power generation efficiency can be obtained in the sludge incineration system. In addition, auxiliary fuel is not required in the incinerator, and since the amount of exhaust gas is reduced, the electric capacity load of the exhaust gas treatment system is reduced, and the electricity obtained by the power generator is used as the operating power source of the sludge incineration system. An energy-independent sludge incineration system can be obtained.

In the sludge incineration system according to the second aspect, the moisture content of the dehydrated cake is set to a moisture content of about 65% by weight or less, so that the dehydrated cake can be surely self-heated. Moreover, since the water | moisture content generate | occur | produced by combustion of a dewatering cake reduces, the heat energy used for white smoke prevention can be reduced.
In the sludge incineration system according to the third aspect, by reducing the processing amount per one mechanical dehydrator, it is possible to make the dehydrated cake have a moisture content capable of self-heat combustion.

In the sludge incineration system according to the fourth aspect, since the incinerator is a fluidized bed type incinerator, the dehydrated cake can be reliably burned.
In the sludge incineration system according to the fifth aspect, since the dehydrator is provided in the vicinity of the incinerator, the transport energy of the dehydrated cake from the dehydrator to the incinerator can be reduced.
In the sludge incineration system of claim 6, the air sucked into the flow / white smoke prevention blower is heated in the heat exchanger by exchanging heat with the exhaust gas passing through the waste heat boiler, so that heat recovery is effective. Can be done. In addition, the exhaust gas that passed through the heat exchanger was guided to the bag filter to remove the dust contained in the exhaust gas, and then the harmful gas was removed in the flue gas treatment tower and released from the chimney to the atmosphere. Processing can be performed effectively.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Drawing 1 is an explanatory view showing one embodiment of the sludge incineration system of the present invention.
In this embodiment, a waste heat boiler 13, a heat exchanger 15, a bag filter 17, a smoke treatment tower 19, an induction fan 21, and a chimney 23 are sequentially provided on the downstream side of the incinerator 11. The incinerator 11 is directly supplied with the dehydrated cake dehydrated by the dehydrator 25. Steam generated in the waste heat boiler 13 is sent to the steam turbine 27, and power is generated by the generator 29. The air from the flow / white smoke prevention blower 31 is guided to the heat exchanger 15.

  In this embodiment, the dehydrator 25 is a mechanical dehydrator made up of a rotary pressure type pressure filter. The dehydrator 25 mechanically dehydrates the sewage sludge into a dehydrated cake having a water content that can be self-heated. In this embodiment, the dehydrator 25 can obtain a dehydrated cake having a moisture content not higher than the self-combustion point and having a moisture content of about 65% by weight. Then, the sewage sludge is dehydrated by the dehydrator 25 until the moisture content of the dehydrated cake becomes a moisture content not higher than the self-combustion point of about 65% by weight.

In this embodiment, the dehydrator 25 is provided in the vicinity of the incinerator 11, that is, attached to the incinerator facility. Then, the dehydrated cake dehydrated by the dehydrator 25 is directly fed into the incinerator 11 via the conveyor 33 disposed in the incinerator 11.
In this embodiment, the incinerator 11 is a fluidized bed incinerator. In the incinerator 11, the dehydrated dehydrated cake is incinerated by self-heat combustion without using auxiliary fuel such as heavy oil or city gas.

The waste heat boiler 13 generates steam by the exhaust gas from the incinerator 11. The waste heat boiler 13 is provided with a water supply unit 35. The steam generated in the waste heat boiler 13 is sent to the steam turbine 27 through the high-pressure steam sump 37 and is generated by the generator 29.
The air from the flow / white smoke prevention blower 31 is guided to the heat exchanger 15. The fluid / white smoke prevention blower 31 supplies air for flow to the fluidized bed type incinerator 11 and air for white smoke prevention to the chimney 23. In the heat exchanger 15, the exhaust gas that has passed through the waste heat boiler 13 and the air supplied from the flow / white smoke prevention blower 31 are heat-exchanged, and the air is heated.

The bag filter 17 removes dust contained in the exhaust gas that has passed through the heat exchanger 15. Pulse air is supplied to the bag filter 17.
The flue gas treatment tower 19 cools the exhaust gas that has passed through the bag filter 17 and removes harmful gas. The flue gas treatment tower 19 includes a cooling water supply unit 39 and a drainage unit 41. The induction fan 21 sucks exhaust gas from the smoke treatment tower 19 and guides it to the chimney 23.

  In the sludge incineration system described above, the sewage sludge is mechanically dehydrated by the dehydrator 25 to obtain a dehydrated cake having a water content capable of self-heat combustion. Then, the dewatered cake dehydrated by the dehydrator 25 is incinerated by self-heat combustion in the incinerator 11 without using auxiliary fuel such as heavy oil or city gas. The exhaust gas generated in the incinerator 11 is guided to the waste heat boiler 13, and the steam generated in the waste heat boiler 13 is guided to the steam turbine 27 to rotate the generator 29 to generate power.

  The air sucked into the flow / white smoke prevention blower 31 is heat-exchanged and heated with the exhaust gas that has passed through the waste heat boiler 13 in the heat exchanger 15. The heated air is supplied as fluidized air to the fluidized bed incinerator 11 and is also supplied to the chimney 23 as white smoke preventing air. The exhaust gas that has passed through the heat exchanger 15 is guided to the bag filter 17, and dust contained in the exhaust gas is removed. Then, the exhaust gas is cooled in the flue gas treatment tower 19 to remove harmful gas, and is sucked by the induction fan 21 to be disposed in the chimney 23. To be released into the atmosphere.

  In the sludge incineration system described above, the sewage sludge is mechanically dehydrated by the dehydrator 25 to obtain a dehydrated cake having a water content that can be self-heated, and the dehydrated cake is incinerated in the incinerator 11 without using auxiliary fuel. Since the exhaust gas from the furnace 11 is guided to the waste heat boiler 13 and power is generated by the power generator using the steam generated in the waste heat boiler 13, high power generation efficiency can be obtained in the sludge incineration system. . Then, no auxiliary fuel is required in the incinerator 11, and the amount of exhaust gas is reduced, so that the electric capacity load of the exhaust gas treatment system is reduced, and the electricity obtained by the power generator is used as the operating power source of the sludge incineration system. This makes it possible to obtain a sludge incineration system that is energy independent.

And since the moisture content of the dewatering cake was made into the moisture content below the self-flammability point of about 65 weight%, the dewatering cake can be reliably self-heated. Moreover, since the water | moisture content generate | occur | produced by combustion of a dewatering cake reduces, the heat energy used for white smoke prevention can be reduced.
And in the sludge incineration system mentioned above, the moisture content which can carry out a self-heat combustion of a dehydrated cake can be carried out by reducing the processing amount per unit | set of the mechanical dehydrator 25. FIG.

In addition, since the incinerator 11 is a fluidized bed incinerator, the dehydrated cake can be reliably burned.
And in the sludge incineration system mentioned above, since the dehydrator 25 was provided in the vicinity of the incinerator 11, the transport energy of the dehydrated cake from the dehydrator 25 to the incinerator 11 can be reduced.

  Further, since the air sucked into the flow / white smoke prevention blower 31 is heated by exchanging heat with the exhaust gas that has passed through the waste heat boiler 13 in the heat exchanger 15, heat recovery can be performed effectively. it can. Further, after exhaust gas that has passed through the heat exchanger 15 is guided to the bag filter 17 and dust contained in the exhaust gas is removed, harmful gas is removed in the smoke treatment tower 19 and discharged from the chimney 23 to the atmosphere. Therefore, the exhaust gas can be treated effectively.

(Concrete example)
FIG. 2 shows various state quantities when the sludge incineration system of the above-described embodiment is operated.
First, the exhaust gas inlet temperature and the outlet temperature in the incinerator 11, the waste heat boiler 13, the heat exchanger 15, the bag filter 17, the flue gas treatment tower 19 and the chimney 23 are shown together with the wet and dry states. Further, the heat exchange air of the heat exchanger 15, the flow / white smoke prevention air of the flow / white smoke prevention blower 31, the pulse air of the bag filter 17, the inlet temperature and the outlet temperature of the cooling air to the incinerator 11 are in a wet state. Together with In addition, the inlet and outlet temperatures of the water supply / drainage of the smoke treatment tower 19 are shown together with the amount of the water supply / drainage. Moreover, the steam generation amount of the waste heat boiler 13 is shown with the pressure and temperature.

Hereinafter, the specific example of the sludge incineration system mentioned above is demonstrated compared with a conventional system.
FIG. 3 shows the installation capacity of the rotary pressure dehydrator 25. In the conventional method, the processing amount of the dehydrator 25 is prioritized, and the dehydrator 25 is operated so that the moisture content of the dehydrated cake is about 78%. On the other hand, in the present invention, priority is given to the moisture content of the dehydrated cake, and the dehydrator 25 is operated so that the moisture content of the dehydrated cake is about 65%. The amount of inflow sludge flowing into the dehydrator 25, that is, the amount of sewage sludge to be treated, is the same in the conventional method and the present invention at 200000 m <3> / day.

FIG. 4 shows the installed capacity of the incinerator 11. In the conventional method, the incineration amount of the dehydrated cake is 150 t / day, and in the present invention, the incineration amount of the dehydrated cake is 100 t / day. In the conventional method, 88.0 L / h heavy oil is used as auxiliary fuel for incineration of the dehydrated cake, but in the present invention, auxiliary fuel is not used.
FIG. 5 shows the power balance of the sludge incineration system described above. In the conventional method, the generated power is 0 kW and the power consumption is 547 kW, so the power balance is minus 547 kW. On the other hand, in the present invention, since the power generated by the generator 29 is 600 kW and the power consumption is 519 kW, the power balance is 81 kW plus. Therefore, a sludge incineration system that is energy independent can be obtained.

Hereinafter, the present invention will be described in more detail using calculation formulas.
First, the reason why mechanical dehydration is more energy-efficient than dehydration by drying will be specifically described.
Now, there is 100 tons of dehydrated cake with a moisture content of 78%, which is roughly examined when it is dried in the incinerator 11 to a moisture content of 65%. In this case, it is assumed that the water that evaporates becomes water vapor at a normal incineration temperature of 800 ° C.

100ton × 0.78 = 78ton (water content)
100 ton-78 ton = 22 ton (solid amount)
22 ton / (1−0.65) ≒ 62.86 ton (dehydrated cake amount when water content is 65%)
62.86 ton-22ton = 42.86 ton (water content in 65% dehydrated cake)
78 ton-42.86 ton = 35.14 ton (amount of water to be evaporated)
Here, an increase in the amount of heat for 35.14 tons of water to become 800 ° C. water vapor is considered.

35140 kg × (600 kcal / kg (water latent heat of evaporation) +0.496 kcal / kg ° C. (average specific heat of water vapor up to 800 ° C.) × 800 ° C.−1 kcal / kg ° C. (specific heat in water state) × 20 ° C.) ≈343255000 kcal
Of heat is required. In actual incineration facilities, there are some fluctuations depending on how heat is recovered and how heat is applied.

When this is converted into electrical energy,
This corresponds to 34325000 kcal / 860 kcal / kW (1 kW = 860 kcal) ≈39900 kW.
That is, if the power required to separate (dehydrate) 35.14 tons of water in the dehydration facility is less than 39900 kW, it can be said that the dehydrator 25 is more advantageous. However, actual electrical energy is not equivalent to thermal energy, and power generation efficiency is about 40%.
39900kW × 0.4 = 15940kW
And less than 15,940 kW can be advantageous.

In an actual incineration facility feasibility study, as shown in FIG. 4, in the conventional method, 150 ton / day, moisture content 78%, solid content 33 ton / day, and in the present invention, 100 ton / day, moisture content 65%. The amount of solid matter is 35 tons / day. When this is compared, the present invention has a larger processing amount, but the amount of heavy oil used is 88 L / Hr in the conventional system and 0 L / Hr in the present invention.
On the other hand, as shown in FIG.
1347 kWH / day-971 kWH / day = 376 kWH / day.

Electric energy that can be extracted from heavy oil 88L / Hr is
88L / Hr × 24Hr / day × 0.85 kg / l (heavy oil specific gravity) × 10800 kcal / kg (heavy oil calorific value) × 1/860 kcal / kW × 0.4 (power generation efficiency) = 9018 kWH / day.
Therefore, the mechanical dehydration equipment is 9018 kWH / day ÷ 376 kWH / day≈24, which is 24 times more advantageous, and the amount of carbon dioxide generation is reduced by that amount.

Next, in the dehydration facility, for example, the amount of power used when a pressure filtration type dehydrator 25 is used will be specifically described.
As shown in FIG. 3, in the conventional method, a water content of 78% is obtained at a processing capacity (filtration rate) of 100 kg-DS / m ² · h. In the present invention, a processing capacity (filtration speed) of 70 kg-DS / m is obtained. If it is reduced to ² · h, a moisture content of 65% is obtained.

Assuming a sewage treatment plant with an inflowing water amount of about 200,000 m ³ / day, solids with a processing solid amount of about 35.6 tons / day will be processed.
Here, when the sludge concentration before charging into the dehydrator 25 is 2.5% (water content 97.5%), the amount of treated sludge is:
35.6 tons / day ÷ 0.025 = 1424 m ³ / day.

In order to handle this, in the case of the conventional method,
35.6ton / day × 1000kg / ton × (1 / 24h / day) × (1 / 100kg-DS / m ² · h)
= 14.83 m ²
Filtration area is required.

On the other hand, in the case of the present invention,
35.6 tons / day × 1000 kg / ton × (1/24 h / day) × (1/70 kg-DS / m ² · h)
= 21.2m ²
It becomes. Here, the capacity of the dehydrator 25 is required to be 21.2 m ² ÷ 14.83 m ² = 1.43 times the capacity.

Conventionally, the power consumption in the dehydration facility on this scale is approximately 970.6 kWH / day as shown in FIG.
970.6 kWH / day × 1.43 = 1388 kWH / day. In addition, since there are shared devices such as conveyors in the entire dehydration facility, as shown in FIG. 5, the calculation is 1346.9 kWH / day.

Next, the power and energy balance in the sludge incineration system will be specifically described.
When the sludge moisture content of the conventional method is about 78%,
In an incineration facility with a solid substance amount of 150 ton / day × (1−0.78) = 33 ton / day, as shown in FIG.
Heavy oil of about 88 L / Hr × 24 Hr = 2112 L / day was used, and the amount of power used was about 13130 kWH / day as shown in FIG.

On the other hand, in the case of the water content of about 65% of the present invention, as shown in FIG.
When the waste heat boiler 13 is added in an incineration facility with a solid material amount of 100 t / day × (1−0.65) = 35 ton / day, the fuel becomes zero. In addition, as shown in FIG. 5, the amount of power used is substantially offset between the amount added to the boiler equipment and the amount of water vapor in the exhaust gas (reduced by the exhaust fan), which is about 12450 kWH / day. Become.

That is, as shown in FIG. 5, the energy balance including the dehydration equipment is 970.6 kWH / day (dehydration equipment) +13130 kWH (incineration equipment) = 14100 kWH / day in the conventional method.
1346.9 kWH / day (dehydration equipment) +12450 kWH (incineration equipment) = 13800 kWH / day. In the conventional method, heavy oil of about 2112 L / day is used, but in the present invention, the amount of heavy oil used is zero.

Furthermore, in the present invention, as shown in FIG. 2, the exhaust gas at the outlet from the incinerator 11 of about 13000 Nm ³ / h, 950 ° C. is recovered by the waste heat boiler 13 up to 330 ° C. About 4.6 tons / Hr can be recovered.
As shown in FIG. 5, the generator 29 leads the steam turbine 27 to about 4.0 ton / Hr after subtracting the consumption to blow water, condenser, deaerator, etc.
(768.4 kcal / kg (400 ° C., 40 ata enthalpy) −545.9 kcal / kg (69 ° C., 0.3 ata enthalpy)) × 4000 × (1/860) × 0.6 (turbine power generation efficiency) = 620 kW
That is, power generation of about 600 kW becomes possible.

Therefore, the amount of generated power is 600 kWH / Hr × 24 = 14400 kWH / day, and the necessary power of 13800 kWH / day for the sludge incineration system can be covered. The sludge incineration facility operates 24 hours / day and does not generate peak power, so the generated sludge incineration system can cover the power of the entire sludge incineration system. This makes it possible to construct an energy-independent sludge incineration system with no heavy oil consumption and no power consumption.

It is explanatory drawing which shows one Embodiment of the sludge incineration system of this invention. It is explanatory drawing which shows the temperature state etc. of the waste gas in the sludge incineration system of FIG. It is explanatory drawing which shows the installation capacity of the dehydrator of FIG. It is explanatory drawing which shows the installation capacity of the incinerator of FIG. It is explanatory drawing which shows the electric power balance of the sludge incineration system of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Incinerator 13 Waste heat boiler 15 Heat exchanger 17 Bag filter 19 Smoke treatment tower 21 Induction fan 23 Chimney 25 Dehydrator 27 Steam turbine 29 Generator

Claims (6)

A dehydrator that mechanically dewaters sewage sludge into a dehydrated cake with water content that can be self-heated,
An incinerator for incinerating the dehydrated cake dehydrated by the dehydrator without using auxiliary fuel;
A waste heat boiler that generates steam from the exhaust gas from the incinerator;
A power generation device that generates power with steam generated in the waste heat boiler;
A sludge incineration system characterized by comprising: In the sludge incineration system according to claim 1,
The sludge incineration system, wherein the moisture content of the dehydrated cake is a moisture content not higher than a self-combustion point of about 65% by weight. In the sludge incineration system according to claim 1 or claim 2,
The sludge incineration system, wherein the dehydrator is a mechanical dehydrator capable of obtaining a dehydrated cake having a moisture content of about 65% by weight or less and having a moisture content below the self-combustion point. In the sludge incineration system according to any one of claims 1 to 3,
The sludge incineration system, wherein the incinerator is a fluidized bed incinerator. In the sludge incineration system according to any one of claims 1 to 4,
The sludge incineration system, wherein the dehydrator is provided in the vicinity of the incinerator. In the sludge incineration system according to claim 4 or 5,
A flow / white smoke prevention blower for supplying air for flow to the fluidized bed incinerator and air for preventing white smoke to the chimney;
A heat exchanger for exchanging heat between the exhaust gas passing through the waste heat boiler and the air supplied from the flow / white smoke prevention blower;
A bag filter for removing dust contained in the exhaust gas that has passed through the heat exchanger;
A flue gas treatment tower that cools the exhaust gas passing through the bag filter and removes harmful gases;
An induction fan that sucks exhaust gas from the flue gas processing tower and guides it to the chimney;
A sludge incineration system characterized by comprising:

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