KR102069317B1 - Sludge fueling system - Google Patents

Abstract

The present invention relates to a sludge fuelization treatment system. The present invention comprises: a mixer (10) which mixes sewage sludge and sawdust; a molding machine (20) which receives a mixture of sludge and sawdust from the mixer (10) and supplies pellets (P1) by forming the mixture of sludge and sawdust into a pellet shape; a dry air supply device (200) of generating dry air (Ad) and supplying the same to a pellet drying device (100) by converting the temperature and humidity of external air (Ao) in order to remove moisture in the pellets (P1) formed in the molding machine (20); the pellet drying device (100) receiving pellets (P1) formed from the molding machine (20) and drying the pellets (P1) by receiving the dry air (Ad) from the dry air supply device (200); a density enhancer (300) enhancing the density of the pellets dried by the pellet drying device (100); and a reservoir (400) storing the pellets (P1) whose density is enhanced by the density enhancer (300). Accordingly, the present invention has an advantage of improving the fuelization efficiency of sludge.

Description

Sludge Fuel Treatment System {SLUDGE FUELING SYSTEM}

The present invention relates to a sludge fueling treatment system, and in particular, it is possible to efficiently perform the drying technique for fueling the sludge in the form of a pallet, and to be suitable to be able to completely remove the moisture in the pallet to make a reliable pallet One sludge fueled treatment system.

In general, sludge is generated during the treatment of water, industrial water, industrial wastewater, sewage, and manure, and is produced in the form of dehydrated cakes having a water content of 75% to 85%. Various methods have been attempted, such as dumping, landfilling, fueling, solidification, incineration and pyrolysis.

As an example, since sludge contains a large amount of water, it is difficult to handle it. Thus, the sludge is usually treated with sand filtration, filter press, vacuum filter, etc. But it can pollute the environment.

Therefore, conventionally, the air is heated by using a boiler, the sludge is heated by high temperature air to reduce the moisture in the sludge, and the sludge is dried by repeatedly discharging the hot air having increased humidity by reducing the moisture of the sludge. There was a technique.

However, the heating dryer using the boiler as described above discharges the high temperature air to reduce the humidity, so the environment around the dryer becomes poor, and the amount of electricity consumed in the boiler is reduced due to the heat of the air discharged to the outside. It can cause an increase, which has the disadvantage of not using energy efficiently.

The technology created to solve this problem is disclosed in the "sludge drying apparatus" according to Republic of Korea Patent Publication No. 10-0925989 (notice date: 2009.11.10).

"Sludge drying apparatus" according to the above Patent No. 10-0925989, by heating and cooling the sludge using the heat generating portion and the cooling portion generated in the refrigeration cycle, it is possible to easily reduce the energy loss, and also heating And it is an invention for solving the technical problem that can be easily improved by improving the environment around the workplace by preventing the odor generated from the sludge to be discharged to the outside by hermetically circulating the air to be cooled to dry the sludge. Since it is described in the registered patent publication, detailed description thereof will be omitted.

In addition, Korean Patent Publication No. 10-0930810 (notice date: 2009.12.09) "sludge drying method" is disclosed.

"Sludge drying method" according to the above Patent Publication No. 10-0930810 (notice date: 2009.12.09) is to reduce the energy loss by heating and cooling the sludge by using the heat generating portion and the cooling portion generated in the refrigeration cycle. It is also a technical task to provide a sludge drying method which can easily improve the environment around the workplace by preventing the odor generated from the sludge by drying the sludge by sealing the air heated and cooled. Since the detailed technology is described in the registered patent publication, detailed description thereof will be omitted.

In addition, a sludge drying apparatus according to Korean Patent Publication No. 10-0992501 (published date: November 11, 2010) is known.

The technology according to the above Patent No. 10-0992501 allows a sludge drying device which can handle a large amount of sludge at a time and prevents the introduction of foreign substances and minimizes the occurrence of odor so that civil complaints do not occur. It is technical problem to provide.

However, the conventional sludge drying method and apparatus, including the "sludge drying apparatus" according to Patent No. 10-0925989 and the "sludge drying method" according to Patent Publication No. 10-0930810 (Notice date: 2009.12.09) and the like All had the following issues.

Apparatus and method for drying conventional sludge, including the "sludge drying apparatus" according to Patent No. 10-0925989 and the "sludge drying method" according to Patent Publication No. 10-0930810 (notice date: 2009.12.09) Although it is said that water is removed and heat is provided, the air generated in reality is not able to remove water, and only the temperature of the air is simply raised.

As such, the air supplied to the drying apparatus does not completely remove moisture, so the drying efficiency of the sludge in the drying apparatus is poor, and rather, an environmental problem occurs such that odor occurs in the sludge pallet after the final treatment.

Document 1: Registered Patent Publication No. 10-0925989 (Notice: 2009.11.10) Document 2: Registered Patent Publication No. 10-0930810 (Date: 2009.12.09)

The present invention was created to solve the problems of the prior art as described above, the object of the sludge fueling treatment system according to the present invention,

First, it is possible to efficiently perform the drying technique for fueling the sludge in the form of pallets, and to completely remove the moisture in the pallets to make a reliable pallet,

Secondly, to create dry air that can dry the sludge or the pellets of the sludge perfectly;

Third, in order to generate dry air, the external air is converted into dry air according to the configuration and arrangement sequence of the first condenser-> second condenser-> first steam coil-> second steam coil. To create a complete dry air of zero absolute humidity,

Fourth, the sludge or sludge pallets are dried using dry air of zero absolute humidity to enable reliable fuelization of the sludge pallets.

Fifth, to dry the pellets of sewage sludge so that perfect drying can be performed,

Sixth, by the belt carrying the pallet in the form of a mesh (mesh) to improve the efficiency of drying,

Seventh, by putting a positive pressure inside the drying device to prevent the mixing of external air,

Eighth, by forming a positive pressure in the interior of the drying apparatus to prevent the outside air from entering the interior of the housing and to dry the pallet with only dry air with little moisture, allowing the pallet to dry completely and at the same time drying the pallet. To improve efficiency,

Ninth, by forming a barrier film inside the drying apparatus to prevent the mixing between the drying air to the maximum to further improve the drying efficiency of the pallet,

Tenth, by adopting a method of supplying dry air for drying the pallet from the outside, without adopting a method of providing a dry air supply device for generating dry air inside the housing of the drying apparatus, the drying efficiency of the pallet can be further improved. It is to provide a sludge fueling treatment system suitable to be able to.

The sludge fueling treatment system of the present invention for achieving the above object is supplied with a mixer for mixing sewage sludge and sawdust, a mixture of sludge and sawdust from the mixer, and molding the mixture of the sludge and sawdust into a pellet shape A molding machine for supplying a pallet, a dry air supply device for converting a state of temperature and humidity of external air to generate dry air and supplying it to a pallet drying apparatus in order to remove moisture in the pellets formed in the molding machine; A pallet drying device for receiving the pellets formed from the pellets and receiving dry air from the drying air supply device, a pallet drying device for drying the pallets, a density enhancer for densifying the pellets dried by the pallet drying device, Comprising storage for storing pallets which have been fortified by means of It characterized.

The sludge fueling treatment system of the present invention having the above configuration has the following effects.

First, it is possible to efficiently carry out a drying technique for fueling the sludge in the form of a pallet, there is an effect that can make a reliable pallet by completely removing the moisture in the pallet.

Second, there is an effect that can generate dry air that can completely dry the pellet of the sludge.

Third, by converting the external air into dry air according to the configuration and arrangement sequence of the first condenser-> second condenser-> first steam coil-> second steam coil, the complete dry air of absolute humidity 0 ~ 5 There is an effect that can be created.

Fourth, by drying the sludge or the sludge pallet by using the dry air of the absolute humidity zero, there is an effect that can be reliably fuelized of the sludge pallet.

Fifth, there is an effect that perfect drying can be performed by using dry air in drying the pellet of sewage sludge.

Sixth, the belt carrying the pallet in the form of a mesh (mesh) has the effect of increasing the efficiency of drying.

Seventh, there is an effect that can prevent the mixing of external air by applying a positive pressure inside the drying apparatus.

Eighth, by forming a positive pressure inside the drying apparatus, it is possible to completely dry the pallet by preventing the outside air from entering the interior of the housing and to dry the pallet with only dry air with little moisture, and also improves the drying efficiency of the pallet. There is an effect that can be improved.

Ninth, by forming a barrier film inside the drying apparatus to prevent the mixing between the drying air to the maximum, there is an effect that can further improve the drying efficiency of the pallet.

Tenth, by adopting a method of supplying dry air for drying the pallet from the outside, without adopting a method of providing a dry air supply device for generating dry air inside the housing of the drying apparatus, the drying efficiency of the pallet can be further improved. Number works.

1 is a block diagram of a sludge fuelization treatment system according to an embodiment of the present invention.
2 is a conceptual diagram illustrating a configuration of a dry air supply device 200 in a sludge fuelization treatment system according to an exemplary embodiment of the present invention.
3 is a view of a dry air supply apparatus 200 of a sludge fueling treatment system according to an embodiment of the present invention, in which a first condenser 220, a second condenser 230, and first and second steam coils 240 and 250 are provided. Figure is a side cross-sectional configuration diagram for showing the structure installed in the casing (210).
4 is a conceptual view illustrating the construction of a pallet drying apparatus 100 in a sludge fuelization treatment system according to an embodiment of the present invention.
5 is a plan configuration diagram of the pallet drying apparatus 100 in the sludge fuelization treatment system according to an embodiment of the present invention.
FIG. 6 is a configuration diagram illustrating the front main part of the pallet drying apparatus 100 in the sludge fuelization treatment system according to an embodiment of the present invention.
7 is a three-dimensional configuration conceptual diagram of the pallet drying apparatus 100 in the sludge fuelization treatment system according to an embodiment of the present invention.
8 is various exemplary diagrams of a pallet P1 which is a drying target of the sludge pallet drying apparatus 100 according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the sludge fueling treatment system of the present invention will be described in detail with reference to the accompanying drawings.

In the sludge fueling treatment system according to an embodiment of the present invention, a mixer 10 for mixing sewage sludge and sawdust and a mixture of sludge and sawdust are supplied from the mixer 10, and the mixture of the sludge and sawdust is pelleted. Molding machine 20 for supplying the pellet (P1) by molding into a shape, and by changing the state of the temperature and humidity of the outside air (Ao) in order to remove the moisture in the pallet (P1) molded in the molding machine 20 A dry air supply device 200 for generating dry air Ad and supplying the generated dry air Ad to the pallet drying apparatus 100 and a pellet P1 molded from the molding machine 20 are supplied. Reinforcing the density of the pallet dried by the pallet drying apparatus 100 and the pallet drying apparatus 100 to dry the pallet (P1) by receiving the dry air (Ad) from the dry air supply device 200 Density enhancer 300, by the density enhancer 300 It is characterized in that it comprises a storage 400 for storing the pallet (P1) is enhanced density.

The dry air supply device 200 converts the state of the temperature and humidity of the outside air (Ao) in order to remove the water in the sludge or the pellet of the sludge to generate the dry air, the dry air thus generated This is a device for supplying the pellet drying apparatus 100 for drying the sludge pallet.

That is, the dry air supply device 200 is a device for supplying dry air, and may be referred to as a dry air generation and supply device.

As shown, the dry air supply device 200, for example, the inlet 211 through which the external air (Ao) of 34 ° C, 85% relative humidity (RH) is introduced, and the dry air (Ad Discharge outlet 212 is formed, the casing 210 and the inner space (S1) is formed, which is installed in the casing 210 in the rear of the inlet 211, the inlet 211 The first condensing means 220 to condense to remove the water contained in the introduced external air (Ao), and is installed inside the casing 210 at the rear end of the first condensing means 220, the first The second condensation means 230 and the second condensation means 230 of the second condensation means 230 to condense again in order to further remove the water contained in the primary condensation air A1 condensed while passing through the condensation means 220. It is installed inside the casing 210 at the rear end, and insulated from the secondary condensation air A2 condensed while passing through the second condensation means 230. It is characterized in that it comprises a isothermal heating means (240, 250) for heating in a state to raise the temperature of the secondary condensation air.

In the dry air supply device 200, the first condensing means 220 is characterized in that it is composed of a first condenser 220 to heat exchange with the external air (Ao) by the refrigerant.

The first condenser 220 may be configured of, for example, a straight coil.

In the dry air supply device 200, the second condensation means 230 is composed of a second condenser 230 that exchanges heat with the first condensation air A1 passed through the first condensation means 220. It is characterized by.

The second condenser 230 may be configured of, for example, a cold water coil using cold water as a heat exchange medium.

By using the cold water coil in the second condenser 230 as described above, there is an advantage that can prevent the phenomenon that the condensed air is frozen.

As described above, the two-stage condenser of the first and second condensers 230 has an advantage of reliably removing moisture.

In the dry air supply device 200, the isothermal heating means (240,250) is heat in a heat-insulating state to the second condensation air (A2) that the water vapor circulated inside, passing through the second condensation means 230 It is characterized by consisting of steam coils 240 and 250 to provide.

In the dry air supply device 200, the isothermal heating means (240,250), the primary isothermal heating to provide heat in a heat insulating state to the second condensation air (A2) passed through the second condensing means 230 Means 240 and the secondary isothermal heating means 250 for providing heat in a heat insulating state to the first dry heating air (A3) passing through the primary isothermal heating means 240, characterized in that.

In the dry air supply device 200, the primary isothermal heating means 240 is insulated by the second condensation air (A2) through which water vapor circulates and passes through the second condensation means (230). It consists of a first steam coil 240 to provide heat, the secondary isothermal heating means 250, the first dry heating air, the water vapor is circulated inside, passing through the first steam coil 240 (A3) is characterized in that it is composed of a second steam coil 250 to provide heat in an adiabatic state.
In the dry air supply device 200, an absolute humidity set between the second steam coil 250 and the outlet 212 inside the casing 210 and set through the second steam coil 250 is set. Blowing means 260 for forcibly blowing the drying air (Ad) having a temperature and the pallet drying apparatus 100 is characterized in that it is configured to further comprise.

In the dry air supply device 200, the first condenser 220, the second condenser 230, and the first and second steam coils 240 and 250 are installed in the casing 210, and external air ( Ao) is converted into the first condensation air (A1) while passing through the first condenser 220, the first condensation air (A1) is passed through the second condenser (230), the second condensation air (A2) The second condensation air (A2) is converted into a first dry heating air (A3) while passing through the first steam coil 240, the first dry heating air (A3) is the second steam Passing through the coil 250 is characterized in that it is converted to dry air (Ad).

In the dry air supply device 200, the dry air (Ad) is greater than the absolute humidity 0 and 5 or less, and the temperature of the dry air (Ad) is preferably 65 ° C ~ 85 ° C.

Next, the structure of the pallet drying apparatus 100 in the sludge fuelization processing system which concerns on one Embodiment of this invention is demonstrated.

As shown, in the sludge fuelization treatment system according to an embodiment of the present invention, the pallet drying apparatus 100 has a pallet inlet 111a into which the pallet P1 to be dried is introduced. The housing 110 having a dry air inlet 115 through which the dry air Ad for drying the pallet P1 supplied from the dry air supply device 200 is introduced is formed on the upper surface 113, and the housing. It is installed inside the 110, and comprises a conveyor (120) for transporting the pallet (P1) introduced through the pallet inlet (111a), the conveyor belt 121 of the conveyor 120 is a wire mesh ( mesh).

In the pallet drying apparatus 100, in order to prevent only the pallet (P1) is introduced through the pallet inlet (111a) and the outside air flows into the inside of the housing 110 through the pallet inlet (111a). The inside of the housing 110 is characterized in that a positive pressure is formed.

In the pallet drying apparatus 100, the drying air inlet 115 is characterized in that formed in a plurality at equal intervals along the moving direction, that is, the front and rear direction of the conveyor 120.

At this time, the dry air (Ad) discharged from the plurality of dry air inlet 115 is discharged through the belt 121 of the mesh form after drying the pallet (P1) is placed on the conveyor 120 and moved. The amount of dry air discharged from the dry air inlet 115 and discharged through the conveyor 120 decreases toward the pallet inlet 111a, so that positive pressure is generated inside the housing 110. It is characterized by being formed.

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That is, the passage rate passing through the belt 121 becomes higher toward the pallet inlet 111a, so that the pressure on the pallet inlet 111a is lowered, so that positive pressure is formed.

All of the dry air Ad discharged from the plurality of dry air inlets 115 is not discharged through the belt 121, and some of them are discharged, but the other is pallet inlet 111a by the resistance of the conveyor 120. A flow path is formed toward).

Specifically, for example, if the pass rate on the pallet inlet 111a side is high and the pass rate on the opposite side of the pallet inlet 111a is low, the pressure on the opposite side of the pallet inlet 111a is high and the pallet inlet 111a side is the pressure. Since this becomes low, a flow path (hereinafter referred to as a horizontal flow path) is formed by the pressure difference from the opposite side of the pallet inlet port 111a toward the pallet inlet port 111a, so that the horizontal wind goes toward the pallet inlet port.

In addition, since the horizontal wind goes out toward the pallet inlet 111a, the pallet P1 is dried once more, thereby further increasing the pallet drying efficiency.

In the pallet drying apparatus 100, a dry air outlet 112a is formed on the rear surface 112 of the housing 110.

Pallets (P1) are installed below the housing 110 to correspond to the dry air inlet 115 below the conveyor 120, and flow into the dry air inlet 115 to move on the conveyor 120. Dry air discharge control means (not shown) for controlling the discharge of the drying air is dried out of the housing 110 is characterized in that it is configured to further include.

The dry air discharge control means is installed on the lower side of the housing 110, characterized in that consisting of an air damper (not shown) for controlling the discharge of dry air.

The air damper itself is a known configuration, by installing the air damper in a one-to-one correspondence to the dry air inlet 115 to the lower side of the housing 110, it is possible to adjust the amount of dry air discharged, thus the amount of dry air discharged By adjusting the to be able to form a positive pressure so that only the dry air to the pallet inlet (111a) and outside air does not enter.

In the pallet drying apparatus 100, between the dry air inlet 115 and the dry air inlet 115, in order to prevent mixing of the dry air Ad flowing into the dry air inlet 115, The lower end is spaced apart from the belt 121 of the conveyor 120 is characterized in that it further comprises a blocking film 130 is installed on the upper surface of the housing (110).

According to this, there is an effect that a drying efficiency becomes higher.

The barrier layer 130 is characterized in that the length is shortened toward the pallet inlet (111a).

According to this, the positive pressure which makes the air discharge flow path so that only dry air goes out and outside air does not enter is formed more reliably. In addition, the horizontal flow path is formed more strongly, resulting in higher drying efficiency.

The barrier layer 130 is characterized in that the length becomes shorter toward the pallet inlet 111a and the dry air outlet 112a based on the central portion.

According to this, the positive pressure which makes the air discharge flow path so that only dry air goes out and outside air does not enter is formed more reliably.

In addition, the horizontal flow path is formed more strongly, resulting in higher drying efficiency.

It is provided on the inner side of the housing 110 to check the dry state (water content) of the pallet (P1), that is, the camera 160 for imaging the pallet (P1) to detect the moisture content is configured to further comprise It is done.

In the pallet drying apparatus 100, the dry air inlet 115 is characterized in that the filter (not shown) is provided.

The following describes the operation of the sludge fuelization treatment system according to an embodiment of the present invention having the configuration as described above.

First, a process of mixing sewage sludge and sawdust by the mixer 10 is performed.

Then, the molding machine 20 receives the mixture of sludge and sawdust from the mixer 10, forms the mixture of the sludge and sawdust into a pellet shape and supplies the pellet to the pallet drying apparatus 100.

The dry air supply device 200 generates a dry air (Ad) by converting the state of the temperature and humidity of the outside air (Ao) in order to remove the moisture in the pellet (P1) formed in the molding machine 20 Supplying to the drying apparatus 100 will be described in more detail.

The external air Ao introduced into the inlet 211 of the dry air supply device 200 is converted into the first condensed air A1 having a temperature drop and a low humidity while passing through the first condenser 220.

Then, the first condensation air (A1) is converted to the second condensation air (A2) as the temperature is further lowered and the humidity is lowered again while passing through the second condenser (230).

Thereafter, while the second condensation air A2 passes through the first steam coil 240, the temperature is increased and the humidity is lowered, thereby being converted into the first dry heating air A3.

Finally, the first dry heating air (A3) is converted to the dry air (Ad) state in which the temperature is further increased and water is almost removed while passing through the second steam coil 250.

The dry air Ad thus converted is supplied to the pallet drying apparatus 100 through the duct.

Now, the pallet P1 is supplied from the molding machine 20 and the pallet P1 is dried on the pallet drying apparatus 100 supplied with the drying air Ad from the dry air supply device 200. It will be described in detail below.

The pallet P1 is introduced from the pallet inlet 111a to rise to the belt 121 of the conveyor 120, and is conveyed on the belt 121.

Dry air Ad is introduced from the dry air supply device 200 into the housing 110 from the dry air inlet 115 and passes through the pallet P1 on the belt 121 of the conveyor 120. To dry.

In this case, since the positive pressure is formed inside the housing 110, the outside air, that is, the outside air does not enter the inside of the housing 110, and therefore, the pallet may be completely dried only by the drying air Ad, thereby completely drying the pallet. There is an advantage to that.

Thereafter, the dried air drying the pallet P1 is exhausted to the outside through the dry air outlet 112a and the pallet inlet 111a.

The pallet P1 dried by the pallet drying apparatus 100 is supplied to the density enhancer 300 to perform a process of increasing density.

Pallets P1 whose density is enhanced by the density enhancer 300 is transferred to the storage 400 and stored.

Meanwhile, in an embodiment of the present invention, the conveyor belt 121 of the conveyor 120 has been described with an example of a wire mesh, but the present invention is not limited thereto. Even if it is formed of a synthetic resin material or a rubber netting, of course, it belongs to the technical scope of the present invention.

And the perforated plate having the same function as the mesh form may also be configured as the belt 121 of the present invention, in this case also belongs to the technical scope of the present invention.

8 illustrates an example of a pallet P1 that is a drying target of the pallet drying apparatus 100 according to an embodiment of the present invention. The pallet P1 may be formed into various shapes, for example, illustrated in FIG. 8. As shown, it will be in the form of a cylinder, a plate, a board (board), etc., all of which can be the object of drying of the drying apparatus 100 of the present invention.

As described above, the preferred embodiments of the present invention have been described, and it is common knowledge in the art that the present invention may be implemented in other specific forms without changing the technical spirit or essential features in addition to the above-described embodiments. It is self-evident to those who have.

Therefore, the above-described embodiments are to be understood as illustrative and not restrictive.

The scope of the invention is indicated by the following claims rather than the above description, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the invention.

100: pallet drying device
110: housing 111: front of the housing
111a: pallet inlet 112: back of housing
112a: dry air outlet 113: upper surface of the housing
115: dry air inlet 120: conveyor
121: conveyor belt 130: blocking film
200: dry air supply device
210: casing 211: inlet
212 outlet S1: internal space
220: first condenser 230: second condenser
240: first steam coil 250: second steam coil
260: blowing means Ao: outside air
A1: primary condensation air A2: secondary condensation air
A3: Dry Heated Air Ad: Dry Air
P1: Pallet

Claims (4)

A mixer 10 for mixing sewage sludge and sawdust,
A molding machine 20 which receives a mixture of sludge and sawdust from the mixer 10 and forms a mixture of the sludge and sawdust into a pellet shape to supply the pallet P1;
In order to remove the moisture in the pellet (P1) formed in the molding machine 20 to convert the state of the temperature and humidity of the outside air (Ao) to generate dry air (Ad) to supply to the pallet drying apparatus 100 Dry air supply device 200,
Pallet drying device 100 for receiving the pellet (P1) molded from the molding machine 20, and receives the dry air (Ad) from the dry air supply device 200 to dry the pallet (P1),
A density enhancer 300 for strengthening the density of the pallet dried by the pallet drying apparatus 100,
It is configured to include a reservoir 400 for storing the pallet (P1) is densified by the density enhancer 300,
The pallet drying apparatus 100,
A pallet inlet 111a into which the pallet P1 to be dried is introduced is formed on the front surface 111, and dry air into which dry air for drying the pallet P1 supplied from the dry air supply device 200 flows. A housing 110 having an inlet 115 formed on an upper surface 113,
It is installed in the housing 110, and comprises a conveyor 120 for transporting the pallet (P1) introduced through the pallet inlet 111a,
The conveyor belt 121 of the conveyor 120 is composed of a wire mesh (mesh),
In order to prevent external air from flowing into the housing 110 through the pallet inlet 111a, a positive pressure is formed inside the housing 110.
The dry air inlet 115 is formed in plural at equal intervals along the moving direction of the conveyor 120,
The dry air Ad discharged from the plurality of dry air inlets 115 is discharged through the belt 121 having a mesh shape after drying the pallet P1 that is placed on the conveyor 120 and moved. As the amount of dry air discharged from the dry air inlet 115 and discharged through the conveyor 120 decreases toward the pallet inlet 111a, positive pressure is formed inside the housing 110. ,
The pallet drying apparatus 100,
In order to prevent the drying air Ad flowing into the dry air inlet 115 from being mixed with each other, the bottom of the belt 121 of the conveyor 120 is between the dry air inlet 115 and the dry air inlet 115. Sludge fuel processing system characterized in that it further comprises a blocking film (130) installed on the upper surface of the housing (110) spaced apart from the.
The method according to claim 1,
The pallet drying apparatus 100,
Pallets (P1) installed below the housing 110 so as to correspond to the dry air inlet 115 below the conveyor 120, and flow into the dry air inlet 115 to move on the conveyor 120. Sludge fueling treatment system, characterized in that it further comprises a dry air discharge control means for controlling the discharge of the dried air is dried) exiting the housing (110).
The method according to claim 2,
The dry air discharge control means is installed in the lower side of the housing 110 is composed of an air damper for controlling the discharge of dry air,
The air damper corresponds to the dry air inlet 115 in a one-to-one manner so that the air damper is installed at the lower side of the housing 110 to adjust the amount of dry air discharged. A sludge fueled treatment system, characterized in that it can form a positive pressure so that only air goes out and outside air does not enter.
The method according to claim 1,
On the rear surface 112 of the housing 110, a dry air outlet 112a is formed,
The blocking film 130, the sludge fuel treatment system, characterized in that the length becomes shorter toward the pallet inlet (111a) and the dry air outlet (112a) relative to the center portion.

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