KR102378265B1 - Heat treatment device for removing bad odor from sewage sludge solid fuel - Google Patents

Abstract

The present invention relates to a heat treatment device for removing odor from sewage sludge solid fuel, which comprises: a body part including a solid fuel inlet on one side of an upper part thereof, a gas outlet on the other side of the upper part, and a solid fuel outlet for discharging the heat-treated solid fuel to the outside on one side of a lower part thereof, and having an internal space divided into a first space part, a second space part, and a third space part; a heat medium supply pipe including a first heat medium supply pipe, a second heat medium supply pipe, and a third heat medium supply pipe, which are stacked along a height direction inside the body part, disposed in a zigzag pattern along a width direction, extending along a length direction, and installed in the first space part, the second space part, and the third space part to form different temperatures so that the solid fuel injected into the body part through the solid fuel inlet is treated with heat to remove the odor; and a mesh conveyor which is stacked along the height direction of the body part and installed by extending along the length direction so that the solid fuel injected into the body part passes through the first space part, the second space part, and the third space part in order along a space between the heat medium supply pipes along the length direction of the body part, so as for the solid fuel to be seated. Heat is supplied to the solid fuel to evaporate internal and external moisture, and volatilize and remove odorous substances to suppress decay and odor which may occur during transport and storage of solid fuel. Therefore, the durability and storability of solid fuel can be improved and calorific value can be increased.

Description

Heat treatment device for removing bad odor from sewage sludge solid fuel

The present invention relates to a heat treatment device for removing odors from solid fuel in sewage sludge, and more particularly, by supplying heat to solid fuel in sewage sludge to evaporate internal and external moisture and volatilizing and removing odorous substances to transport solid fuel. And it relates to a heat treatment device for removing bad odors from sewage sludge solid fuels, which can improve durability and storability of solid fuels and increase calorific value by suppressing the generation of decay and odors that may occur during storage.

Sludge refers to the sediment that is generated by separating floating substances from the liquid by treating water purification, sewage, and wastewater treatment. Sewage sludge solid fuel refers to a fuel produced by using sewage sludge.

In general, sewage sludge is disposed of by burying it in soil or dumping it in the sea, but as the international convention on the prevention of marine pollution came into effect, the dumping of sewage and wastewater sludge at sea is prohibited. The method accounted for 48.2% in 2018, and it is the most important treatment method as the fuel conversion ratio increases to 58.7% when operating the dry fuel conversion facility being promoted.

Sewage sludge solid fuel is an alternative fuel that can replace wood pellets that depend on imports because the quality and characteristics are similar to wood pellets used as fuel for co-firing in power plants. As it increased to 338,143MWh, the use of sewage sludge solid fuel in power plants is expanding.

In addition, according to the carbon loading promotion strategy, the demand for new and renewable energy is expected to increase by promoting the conversion of the main energy source from fossil fuels to new and renewable energy. In contrast to others, sewage sludge solid fuel has the advantage of being able to provide a stable supply.

In the conventional case, there are problems such as air pollution and civil complaints due to the generation of odors during storage and drying of sewage sludge.

However, the technology for reducing odors generated from sewage sludge solid fuel has not been applied, and there are problems such as civil complaints and air pollution due to bad odors, so its use is shrinking.

Accordingly, there is a need for a device for solving these problems.

The purpose of the present invention, devised in view of the above, is to supply heat to solid fuel to evaporate internal and external moisture, and volatilize and remove odorous substances, thereby generating decay and odor that may occur during transport and storage of solid fuel. An object of the present invention is to provide a heat treatment device for removing bad odors from sewage sludge solid fuel that can suppress the odor and improve durability and storage of solid fuel and increase calorific value.

In order to achieve the object of the present invention as described above, a heat treatment apparatus for removing odor of solid fuel from sewage sludge is provided with a solid fuel inlet at one upper side and a gas outlet at the other upper side, and the solid fuel heat-treated at one lower side. a body portion provided with a solid fuel discharge port for discharging to the outside, the interior of which is divided into a first space portion, a second space portion, and a third space portion; The solid fuel injected into the body through the solid fuel inlet is heat-treated to remove odors, stacked in a height direction inside the body portion, arranged in a zigzag pattern along the width direction, and formed to extend along the length direction. a heating medium supply pipe comprising a first heating medium supply pipe, a second heating medium supply pipe, and a third heating medium supply pipe respectively installed in the first space part, the second space part, and the third space part to form different temperatures; The solid fuel injected into the body part sequentially passes through the first space part, the second space part, and the third space part along the space between the heating medium supply pipe and the heating medium supply pipe along the longitudinal direction of the body part. a mesh conveyor stacked along the height direction of the body portion so as to be transported and installed to extend along the longitudinal direction, on which the solid fuel is seated; characterized by including.

Here, a plurality of temperature sensors for measuring the temperature inside the body part raised by the heating medium supply pipe, and the first space part on one side of the outer surface of the first space part, the second space part, and the third space part And, a plurality of timers for measuring the time during which the solid fuel is heat-treated by the temperature inside the second space and the third space may be provided.

In addition, the internal temperature of the first space is 140 °C to 160 °C, the internal temperature of the second space is 190 °C to 210 °C, and the internal temperature of the third space is 240 °C to 260 °C.

In addition, the time for the solid fuel to be heat-treated while sequentially passing through the first space portion, the second space portion, and the third space portion during the heat treatment may be set to take 10 minutes, respectively.

In addition, an exhaust gas discharge pipe capable of discharging gas generated during heat treatment of the solid fuel to the outside by the heating medium supply pipe may be installed in communication with the gas outlet at one side of the body portion.

In addition, a plurality of primary tar removal units may be provided at a lower side of the mesh conveyor to primarily collect tar components separated from the solid fuel that are seated on the mesh conveyor and transported to the outside.

In addition, a plurality of secondary tar removal that communicates with the exhaust gas discharge pipe and is installed upright along the height direction of the body part to collect and discharge the tar component contained in the exhaust gas to the outside of the body part at one external side Additional may be provided.

In addition, a transfer screw for transferring a predetermined amount of the solid raw material may be installed inside the solid fuel inlet provided on the upper side of the body portion.

And, between the upper inner surface of the body portion adjacent to the solid fuel inlet and the mesh conveyor, one end is fixed to the upper inner surface of the body portion to extend downward, and the other end is spaced apart from the upper surface of the mesh conveyor by a certain length to provide the mesh conveyor. An equal distribution control plate may be provided so that a predetermined amount of the solid fuel transferred along the conveyor is stacked on the upper surface of the conveyor.

In addition, a transfer screw may be optionally provided at the rear end of the transfer screw to control the amount of the solid fuel supplied by selectively rotating in the reverse or forward direction of the transfer screw.

As described above, the heat treatment device for removing odors from sewage sludge solid fuel according to the present invention supplies heat to the solid fuel to evaporate internal and external moisture, and volatilizes and removes odorous substances during transport and storage of the solid fuel. It has the effect of suppressing the occurrence of decay and odor that may occur.

In addition, there is an effect that can increase the calorific value by reducing the oxygen content by removing some of the free water, physically bound water, incombustible gas, and low-calorie volatiles on the surface of the solid fuel.

In addition, there is an effect of improving the durability and storability of the solid fuel by the effect of reducing the structural deformation caused by moisture by removing the hydrophilic hydroxyl group on the surface of the solid fuel and the effect of preventing the absorption of moisture according to the surface coating.

1 is a front view showing a structure viewed from the front of a heat treatment apparatus for removing odors from sewage sludge solid fuel according to an embodiment of the present invention;
2 is a side view showing the structure of a heat treatment apparatus for removing odors from sewage sludge solid fuel according to an embodiment of the present invention, viewed from the side;
3 is a plan view showing a structure looking down at a heat treatment apparatus for removing odors from sewage sludge solid fuel according to an embodiment of the present invention;
4 is a plan view illustrating an internal structure of a solid fuel inlet of a heat treatment apparatus for removing odors of solid fuel from sewage sludge according to an embodiment of the present invention.

Hereinafter, a heat treatment apparatus for removing odors from solid fuel in sewage sludge according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a front view showing a structure as viewed from the front of a heat treatment apparatus for removing odors of sewage sludge solid fuel according to an embodiment of the present invention, and FIG. 2 is a odor of sewage sludge solid fuel according to an embodiment of the present invention. It is a side view showing the structure of the heat treatment device for removal, as viewed from the side, and FIG. 3 is a plan view showing the structure looking down at the heat treatment device for removing the odor of the sewage sludge solid fuel according to an embodiment of the present invention, FIG. is a plan view showing the internal structure of the solid fuel inlet of the heat treatment apparatus for removing the odor of the sewage sludge solid fuel according to an embodiment of the present invention.

As shown in these drawings, in the heat treatment apparatus for removing odor of sewage sludge solid fuel according to an embodiment of the present invention, a solid fuel inlet 110 is provided on one upper side and a gas outlet 120 is provided on the other upper side. The solid fuel outlet 130 for discharging the heat-treated solid fuel to the outside is provided on one side of the lower side, and the interior is provided with a first space portion 101 , a second space portion 102 , and a third space portion 103 . ) divided by the body portion 100 and; The solid fuel injected into the body 100 through the solid fuel inlet 110 is heat-treated to remove odors, and is stacked along the height direction inside the body unit 100 and zigzag along the width direction. A first heating medium supply pipe arranged as a , extending along the longitudinal direction and installed in the first space portion 101, the second space portion 102, and the third space portion 103, respectively, to form different temperatures a heating medium supply pipe 200 including 201 and a second heating medium supply pipe 202 and a third heating medium supply pipe 203; The solid fuel injected into the body portion 100 is disposed along the space between the heating medium supply pipe 200 and the heating medium supply pipe 200 along the longitudinal direction of the body portion 100, the first space portion 101. And, the second space portion 102 and the third space portion 103 are stacked along the height direction of the body portion 100 so that they can be sequentially transferred and installed so as to extend along the length direction. The mesh conveyor 300 on which the solid fuel is seated; consists of including.

The body part 100 is a rectangular member having a certain internal space, and serves to heat-treat the solid fuel using heat generated from the heating medium supply pipe 200 in a state where the solid fuel is accommodated in the internal space. do

A solid fuel inlet 110 into which a solid fuel to be heat treated is input is provided on one upper side of the body portion 100, and a gas that is generated during heat treatment of the solid fuel is discharged to the outside at the other upper side. An outlet 120 is formed.

A single solid fuel inlet 110 is formed on the edge of the upper portion of the body portion 100, and the gas outlet 120 is spaced apart from a plurality of points on the upper surface of the body portion 100 at regular intervals for rapid discharge of the generated gas. Available in multiples.

A solid fuel outlet 130 for discharging solid fuel from which odor has been removed after heat treatment has been completed is provided on one lower side of the body 100 .

The internal space of the body part 100 is formed by a separate means such as a partition wall 100a that divides the internal space into the first space part 101, the second space part 102 and the third space part 103. ), and heat treatment of the solid fuel is performed while maintaining the internal temperatures of the first space portion 101, the second space portion 102, and the third space portion 103 to be different during the heat treatment of the solid fuel. It is effective to let it go.

To this end, the first space portion 101, the second space portion 102 and the third space portion 103 on one side of the outer surface to measure the temperature inside the body portion 100 raised by the heat medium supply pipe 200 It is preferable that a plurality of temperature sensors 140 are respectively provided.

The internal temperature of the first space 101 by measuring the temperatures of the first space 101 , the second space 102 , and the third space 103 using a plurality of temperature sensors 140 . 140 ℃ to 160 ℃, the internal temperature of the second space 102 to 190 ℃ to 210 ℃, the internal temperature of the third space 103 to be maintained such that 240 ℃ to 260 ℃.

Preferably, the temperature of the first space 101 is maintained at 150 ° C, the second space 102 at 200 ° C, and the third space 103 at 250 ° C so that the heat treatment of the solid fuel is performed. do.

And, a plurality of timers 150 for measuring the time during which the solid fuel is heat-treated according to the temperature inside the first space 101, the second space 102 and the third space 103 are provided. When the solid fuel is heat-treated, the time during which the solid fuel is heat-treated while sequentially passing through the first space 101, the second space 102 and the third space 103 by the mesh conveyor 300 is It is effective to allow it to take 10 minutes.

The heating medium supply pipe 200 is stacked along the height direction inside the body part 100 so as to remove the odor by heat-treating the solid fuel injected into the body part 100 through the solid fuel input port 110 in the width direction. It is a member which is arranged in a zigzag along the direction and is formed to extend along the longitudinal direction.

The heating medium supply pipe 200 is a tubular member disposed in a stacked form inside the body part 100 and installed in a zigzag shape along the width direction of the body part 100, and by a heating medium passing through the heating medium supply pipe 200 It is effective to be installed in a zigzag shape along the width direction of the body part 100 so as to quickly increase the temperature inside the body part 100 and to extend along the length direction.

An inlet and an outlet are formed at one end and the other end of the heating medium supply pipe 200 to supply and discharge the heating medium, respectively. After being discharged, it is injected into the heating medium boiler so that it can be re-supplied after being heated.

The heat medium supply pipe 200 is installed in the first space 101, the second space 102, and the third space 103, respectively, and the first space 101 and the second space 102 and It is composed of a first heating medium supply pipe 201 , a second heating medium supply pipe 202 , and a third heating medium supply pipe 203 that form different temperatures inside the third space 103 .

And, according to this configuration, a heating medium having a temperature at which the temperature inside the first space 101 can form 150° C. is supplied to the first heating medium supply pipe 201 by the first heating medium supply pipe 201, A heating medium having a temperature at which the temperature inside the second space 102 can form 200 ° C. is supplied to the second heating medium supply pipe 202 by the second heating medium supply pipe 202, and to the third heating medium supply pipe 203 Accordingly, it is preferable to supply a heating medium having a temperature at which the temperature inside the third space 103 can form 250° C. to the third heating medium supply pipe 203 .

The mesh conveyor 300 has a body so that the solid fuel injected into the body 100 can be transported along the space between the heating medium supply pipe 200 and the heating medium supply pipe 200 along the longitudinal direction of the body 100 . It is stacked along the height direction of the part 100 and is installed to extend along the longitudinal direction, and serves to seat the solid fuel on the upper surface.

The mesh conveyor 300 is a plate-shaped member having a mesh shape in which pores are formed on the plate surface, and by driving the mesh conveyor motor 310 provided on one side, it circulates while forming a certain trajectory to transport the solid fuel seated on the upper surface. will make it

The mesh conveyor motor 310 takes 10 minutes for the solid fuel seated on the upper surface of the mesh conveyor 300 to pass through the first space 101, the second space 102, and the third space 103, respectively. It is effective to drive the rotation at a speed that is

And, the mesh conveyor 300 is formed in the form of a mesh with pores formed on the plate surface, which will be described later through the pores while the solid fuel is transported while seated on the mesh conveyor 300, while the tar component contained in the solid fuel is separated. This is to be collected by the tar removal unit 500 .

On the other hand, on one side of the body portion 100, an exhaust gas discharge pipe 400 capable of discharging gas generated during heat treatment of the solid fuel to the outside by the heating medium supply pipe 200 is installed in communication with the gas outlet 120 . has been

The exhaust gas discharge pipe 400 is composed of a plurality of auxiliary pipes having one end directly communicating with the gas outlet 120 and a single main pipe communicating with the other end of the branch pipe at a plurality of locations.

As the solid fuel is heat-treated by this structure, the gas generated inside the body part 100 is discharged to the outside of the body part 100 by a plurality of branch pipes, and then through the main pipe connected to the branch pipe to the deodorization facility at once. allow it to flow in.

At the lower side of the mesh conveyor 300, a plurality of primary tar removal units 500 for primarily collecting and discharging the tar components separated from the solid fuel that are seated on the mesh conveyor 300 and transported are provided. .

This primary tar removal unit 500 is disposed on the lower side of the mesh conveyor 300, the central area is arranged at a lower position than the edge area, the plate surface is inclined toward the center, the collecting plate 510, and the collecting plate 510 ) is connected to the lower portion of the central region and is composed of a removal tube 520 that is formed to extend to the outside of the body portion 100 .

The upper surface of the collecting plate 510 is completely opened, and the tar component that is separated from the surface of the solid fuel seated on the upper surface of the mesh conveyor 300 and falls downward through the pores formed in the plate surface of the mesh conveyor 300 collects the plate. After being seated in the 510, it moves along the slope to gather in the central area.

The tar component collected in the central region of the collecting plate 510 is sucked out of the body 100 through the removal pipe 520 and discharged, so that the tar component is primarily removed.

The external one side of the body part 100 communicates with the exhaust gas discharge pipe 400 and is installed upright along the height direction of the body part 100 to collect the tar component contained in the exhaust gas and discharge it to the outside. A plurality of secondary tar removal units 600 are provided.

The secondary tar removal unit 600 serves to collect and discharge the tar components contained in the exhaust gas generated during the heat treatment of the solid fuel to the outside.

This secondary tar removal unit 600 is installed upright in communication with the exhaust gas discharge pipe 400, and the tar separation pipe 610 into which the tar component separated from the exhaust gas flows, and the tar separation pipe 610. It consists of a tar collection plate 620 installed at a plurality of locations along the height direction and collecting tar components moving through the tar separation pipe 610 .

On the other hand, a transfer screw 700 for transferring a predetermined amount of the solid raw material is installed inside the solid fuel inlet 110 provided on the upper side of the body 100, and the rear end of the transfer screw 700 is optionally A transfer screw 900 is provided so as to control the amount of the solid fuel supplied by rotationally driving the transfer screw 700 in a reverse or forward direction to the rotational direction.

The transfer screw 700 is rotated by the rotational driving of the transfer screw motor 710 provided on one side, and the solid fuel injected into the inside through the solid fuel inlet 110 is transferred to fall to the mesh conveyor 300 side.

The conveying screw 900 provided at the rear end of the conveying screw 700 rotates in the opposite direction to the rotational direction of the conveying screw 700 when the amount of solid fuel conveyed through the conveying screw 700 is excessive. It serves to convey the solid fuel back to the transfer screw 700 side.

When the amount of solid fuel transferred by the transfer screw 700 is appropriate, the transfer screw 900 rotates in the same direction as the rotation direction of the transfer screw 700 and the transferred solid fuel falls and the mesh conveyor 300 to be seated on the top surface of

And, between the upper inner surface of the body portion 100 adjacent to the solid fuel inlet 110 and the mesh conveyor 300, one end is fixed to the upper inner surface of the body portion 100 to extend downward, and the other end is the mesh conveyor ( An equal distribution control plate 800 is provided so that a predetermined amount of the solid fuel transferred along the mesh conveyor 300 is stacked on the top surface of the mesh conveyor 300 spaced apart by a predetermined length from the upper surface of the 300).

The equal distribution control plate 800 is stacked by the spacing between the end of the equal distribution control panel 800 and the upper surface of the mesh conveyor 300 while the solid fuel seated on the upper surface of the mesh conveyor 300 passes through the equal distribution control panel 800 . It serves to ensure that the transferred solid fuel is evenly distributed by making it a uniformly controlled state.

It is effective to control the amount of solid fuel to be supplied by adjusting the stacking height of the solid fuel by adjusting the separation distance between the end of the equalization control plate 800 and the upper surface of the mesh conveyor 300 .

A process of heat-treating solid fuel using the heat treatment apparatus for removing odors from sewage sludge solid fuel according to an embodiment of the present invention having the configuration as described above will be described as follows.

First, when the solid fuel to be heat-treated is input through the solid fuel inlet 110 provided on one side of the body 100, the solid fuel is transferred to the conveying screw 900 by the rotation of the conveying screw 700, The conveying screw 900 is rotated in the same direction as the conveying screw 700 , so that the solid fuel is seated on the upper surface of the mesh conveyor 300 and transported in a stacked form along the mesh conveyor 300 .

When the solid fuel stacked by the mesh conveyor 300 passes through the equal distribution control plate 800 while being transported, the stacked height is adjusted to be the same, and the solid fuel is continuously supplied by a certain amount.

And, when the heat medium passes through the heat medium supply pipe 200, the inner space of the body part 100 is heated to a constant temperature, and the solid fuel is transferred to the first space part 101, the second space part 102 and the third space. The first heating medium supply pipe 201 is such that the heating medium of 150° C. is supplied, and the second heating medium supply pipe ( 201) is to supply a heating medium at 200 °C, and it is effective to supply the third heating medium supply pipe 203 with a heating medium at 250 °C.

The first space portion 101, the second space portion 102, and the third space portion 103 of the body portion 100 whose internal temperature is raised to 150° C., 200° C., and 250° C. by the heat medium supply pipe 200, respectively. ) The solid fuel is heat-treated while being transported by the mesh conveyor 300 inside, at this time, the heat treatment time is 10 while passing through the first space 101 , the second space 102 , and the third space 103 . Minutes are most effective.

And, as the solid fuel is transported along the mesh conveyor 300 , the tar component attached to the surface is separated, and the separated tar component is removed by the primary tar removal unit 500 , and exhaust generated during the heat treatment process. The gas is discharged to the outside through the exhaust gas discharge pipe (400).

In addition, the tar component contained in the exhaust gas is collected in the secondary tar removal unit 600 in the process of flowing along the exhaust gas discharge pipe 400 to be exhausted so that additional removal is performed to complete the heat treatment of the solid fuel. do.

The heat treatment device for removing odor from sewage sludge solid fuel having the above configuration supplies heat to the solid fuel to evaporate internal and external moisture, and volatilizes and removes odorous substances, which may occur during transport and storage of solid fuel. By suppressing the generation of decay and odor, it is possible to improve the durability and storability of the solid fuel and increase the calorific value.

Since the above has only been described with respect to some of the preferred embodiments that can be implemented by the present invention, as noted, the scope of the present invention should not be construed as being limited to the above embodiments, and It will be said that the technical idea and the technical idea having its roots are all included in the scope of the present invention.

100: body 101: first space
102: second space 103: third space
110: solid fuel inlet 120: gas outlet
130: solid fuel outlet 200: heating medium supply pipe
201: first heat medium supply pipe 202: second heat medium supply pipe
203: third heat medium supply pipe 300: mesh conveyor
400: exhaust gas discharge pipe 500: primary tar removal unit
600: secondary tar removal unit 700: transfer screw
800: equal distribution control plate 900: transfer screw

Claims (10)

A solid fuel inlet 110 is provided on one upper side, a gas outlet 120 is provided on the other upper side, and a solid fuel outlet 130 for discharging the heat-treated solid fuel to the outside is provided on one lower side, and the inside is a body portion 100 divided into a first space 101 , a second space 102 , and a third space 103 ;
The solid fuel injected into the body 100 through the solid fuel inlet 110 is heat-treated to remove the odor, and is stacked along the height direction inside the body unit 100 and zigzag along the width direction. A first heat medium supply pipe arranged as a , extending along the longitudinal direction and installed in the first space portion 101, the second space portion 102, and the third space portion 103, respectively, to form different temperatures a heating medium supply pipe 200 including 201, a second heating medium supply pipe 202, and a third heating medium supply pipe 203;
The solid fuel injected into the body portion 100 is disposed along the space between the heating medium supply pipe 200 and the heating medium supply pipe 200 along the longitudinal direction of the body portion 100, the first space portion 101. And, the second space portion 102 and the third space portion 103 are stacked along the height direction of the body portion 100 so that they can be sequentially transferred and installed to extend along the length direction. The mesh conveyor 300 on which the solid fuel is seated; including,
At one side of the body portion 100, an exhaust gas discharge pipe 400 capable of discharging gas generated during heat treatment of the solid fuel to the outside by the heating medium supply pipe 200 communicates with the gas outlet 120 installed,
A plurality of primary tar removal units 500 for primarily collecting and discharging tar components separated from the solid fuel that are seated on the mesh conveyor 300 and transferred to the lower side of the mesh conveyor 300 are provided. become,
The external one side of the body part 100 communicates with the exhaust gas discharge pipe 400 and is installed upright along the height direction of the body part 100 to collect the tar component contained in the exhaust gas secondary to the outside. A heat treatment device for removing bad odors from sewage sludge solid fuel, characterized in that it is provided with a plurality of secondary tar removal units (600) discharged to the furnace. According to claim 1,
The temperature inside the body part 100 increased by the heat medium supply pipe 200 on one side of the outer surfaces of the first space part 101, the second space part 102 and the third space part 103 The solid fuel is heat-treated by a plurality of temperature sensors 140 measuring A heat treatment device for removing bad odors from sewage sludge solid fuel, characterized in that a plurality of timers 150 for measuring time are provided. 3. The method of claim 2,
The internal temperature of the first space 101 is 140 ℃ to 160 ℃, the internal temperature of the second space 102 is 190 ℃ to 210 ℃, the internal temperature of the third space 103 is 240 ℃ A heat treatment device for removing odors of sewage sludge solid fuel, characterized in that it is maintained at 260 ° C. 4. The method of claim 3,
The solid fuel passes through the first space portion 101, the second space portion 102, and the third space portion 103 sequentially during heat treatment, and the heat treatment time takes 10 minutes, respectively. A heat treatment device for removing odors from solid fuels in sewage sludge. delete delete delete 5. The method of claim 4,
Heat treatment for removing bad odors from sewage sludge solid fuel, characterized in that a transfer screw 700 for transferring a predetermined amount of the solid raw material is installed inside the solid fuel inlet 110 provided on the upper side of the body portion 100 Device. 9. The method of claim 8,
Between the upper inner surface of the body portion 100 adjacent to the solid fuel inlet 110 and the mesh conveyor 300, one end is fixed to the upper inner surface of the body portion 100 to extend downward, and the other end is the mesh An equal distribution control plate 800 is provided so that a predetermined amount of the solid fuel transported along the mesh conveyor 300 is stacked on the top surface of the mesh conveyor 300 spaced apart from the upper surface of the conveyor 300 by a certain length, characterized in that it is provided Heat treatment device to remove odor from sewage sludge solid fuel. 9. The method of claim 8,
At the rear end of the transfer screw 700, the transfer screw 900 is selectively driven to rotate in the reverse or forward direction to the rotation direction of the transfer screw 700 to adjust the amount of the solid fuel supplied. Heat treatment device for removing odor from sewage sludge solid fuel.

Images