KR102378273B1 - Manufacturing system for solid fuel having heat treatment device for removing bad odor from sewage sludge solid fuel - Google Patents

Abstract

The present invention is a mixer for producing a primary mixture by mixing sludge or additives; a first dryer for drying the first mixture supplied from the mixer to a first moisture content; a second dryer for producing a dry mixture of a second moisture content by heating and drying the first mixture of the first moisture content; a molding machine for molding a solid fuel by pressure molding the dry mixture; and a heat treatment device for heat-treating the solid fuel injected into the inside after molding is completed so as to remove odors generated from the solid fuel molded in the molding machine. By providing a solid fuel manufacturing system equipped with a heat treatment device for removing bad odors from sewage sludge solid fuel including, heat is supplied to the solid fuel to evaporate internal and external moisture, and odorous substances are removed by volatilization during transportation and storage of solid fuel. It has the effect of improving the durability and storage of solid fuel by suppressing the generation of possible decay and odor, and producing a solid fuel capable of increasing calorific value.

Description

Solid fuel manufacturing system having a heat treatment device for removing bad odor from sewage sludge solid fuel

The present invention relates to a solid fuel manufacturing system having a heat treatment device for removing odors from sewage sludge solid fuel, and more particularly, to supply heat to sewage sludge solid fuel to evaporate internal and external moisture and volatilize and remove odorous substances By doing so, it is equipped with a heat treatment device for removing bad odors from sewage sludge solid fuel that can produce solid fuel with increased calorific value and improved durability and storage properties of solid fuel by suppressing the generation of decay and odor that may occur during transport and storage of solid fuel. It relates to a solid fuel manufacturing system.

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 solid fuel manufacturing system equipped with a heat treatment device for removing odors from sewage sludge solid fuel capable of manufacturing solid fuel with increased calorific value and improved durability and storability of the solid fuel by suppressing it.

In order to achieve the object of the present invention as described above, there is provided a solid fuel manufacturing system having a heat treatment device for removing odors from sewage sludge solid fuel, comprising: a mixer for producing a primary mixture by mixing sludge or additives; a first dryer for drying the first mixture supplied from the mixer to a first moisture content; a second dryer for producing a dry mixture of a second moisture content by heating and drying the first mixture of the first moisture content; a molding machine for molding a solid fuel by pressure molding the dry mixture; and a heat treatment device for heat-treating the solid fuel injected into the inside after molding is completed so as to remove odors generated from the solid fuel molded in the molding machine. characterized by including.

Here, the heat treatment apparatus includes: a body portion provided with a solid fuel inlet at one upper side, a gas outlet at the other upper side, and a solid fuel outlet at one lower side for discharging the heat-treated solid fuel to the outside; The solid fuel injected into the body through the solid fuel inlet is heat-treated to remove odors, stacked inside the body in the height direction, arranged in a zigzag along the width direction, and formed to extend along the length direction a heating medium supply pipe; The solid fuel injected into the body part is stacked along the height direction of the body part and installed to extend along the longitudinal direction so that the solid fuel can be transferred along the space between the heating medium supply pipe and the heating medium supply pipe along the length direction of the body part. A mesh conveyor on which solid fuel is seated; characterized by including.

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 at one side of the body in communication with the gas outlet.

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 transferred 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 at one external side of the body part to collect and discharge the tar component contained in the exhaust gas to the outside 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.

In addition, between the upper inner surface of 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 form 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 the transfer screw in a reverse or forward direction.

And, on one side of the outer surface of the body part, a temperature sensor for measuring the temperature inside the body part raised by the heating medium supply pipe, and a timer for measuring the time during which the solid fuel is heat treated by the temperature inside the body part are provided. can

In addition, the solid fuel that has been heat-treated in the heat treatment device may be fed into a separate cooler to be cooled.

As described above, the solid fuel manufacturing system having a heat treatment device for removing odors from sewage sludge solid fuel according to the present invention is manufactured by supplying heat to solid fuel to evaporate internal and external moisture and volatilizing and removing odorous substances. It has the effect of suppressing the generation of decay and odors that may occur during the transport and storage of solid fuels.

In addition, there is an effect that can increase the calorific value of the manufactured solid fuel 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 manufactured 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 moisture absorption according to the surface coating.

1 is a schematic diagram schematically showing the structure of a solid fuel manufacturing system having a heat treatment device for removing odors from sewage sludge solid fuel according to an embodiment of the present invention;
2 is a front view showing the structure of the heat treatment apparatus for removing odors from sewage sludge solid fuel in accordance with an embodiment of the present invention as viewed from the front;
3 is a side view showing the structure of the heat treatment apparatus for removing bad odors from sewage sludge solid fuel according to an embodiment of the present invention, as viewed from the side;
4 is a plan view showing a structure looking down at the heat treatment apparatus for removing odors from sewage sludge solid fuel according to an embodiment of the present invention;
5 is a plan view showing the internal structure of the inlet of the heat treatment apparatus for removing odors from sewage sludge solid fuel according to an embodiment of the present invention.

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

1 is a schematic diagram schematically showing the structure of a solid fuel manufacturing system having a heat treatment device for removing odors from sewage sludge solid fuel in accordance with an embodiment of the present invention, and FIG. 2 is a sewage sludge according to an embodiment of the present invention. It is a front view showing the structure of the heat treatment apparatus for removing odors from solid fuels viewed from the front, and FIG. 3 is a side view showing the structure of the heat treatment apparatus for removing odors from sewage sludge solid fuels according to an embodiment of the present invention, as viewed from the side. 4 is a plan view showing a structure of a heat treatment apparatus for removing odors from sewage sludge solid fuel according to an embodiment of the present invention, and FIG. 5 is a heat treatment apparatus for removing bad odors from sewage sludge solid fuel according to an embodiment of the present invention It is a plan view showing the internal structure of the inlet.

As shown in these drawings, the solid fuel manufacturing system 10 having a heat treatment device for removing odors from sewage sludge solid fuel according to an embodiment of the present invention mixes the sludge 11 or the additive 12 to form the primary a mixer 20 for producing a mixture; a first dryer 30 for primary drying the primary mixture supplied from the mixer 20 to a first moisture content; a second dryer 40 for producing a dry mixture of a second moisture content by heating and drying the first mixture of the first moisture content; a molding machine 50 for molding a solid fuel by pressure molding the dry mixture; and a heat treatment device (1) for heat-treating the solid fuel injected inside after molding is completed so as to remove odors generated from the solid fuel molded in the molding machine (50). consists of including.

Hereinafter, only the necessary components will be described in describing the configuration of the present invention.

That is, when constructing a solid fuel manufacturing system having a heat treatment device for removing odors from sewage sludge solid fuel, devices such as a hopper for storage, a boiler for heating, a steam pipe, an air pump, and a hoist may be additionally configured. However, the omitted configuration is matters that can be easily selected and applied by those skilled in the art, and does not mean that the configuration not described is an unnecessary configuration.

First, the mixer 20 produces a primary mixture by kneading or kneading the sludge 11 or the additive 12 . Here, the mixing of the sludge 11 and the additive 12 may not be smooth due to the aggregation of the sludge 11 and the floating phenomenon due to the small density of the additive 12 . So, in the mixer 20, the particles of the sludge 11 and the additive 12 are in contact as much as possible, and the agglomeration of the sludge 11 is eliminated and mixed.

By this mixer 20, the mixing rate and mixing uniformity of the primary mixture are increased, and the size of the mixed particles is small and uniformly formed. Through this, the mixer 20 can primarily lower the moisture content of the sludge 11 .

To this end, the mixer 20 may be provided with a mixing means in a form that can be kneaded while mixing the mixture inside the container. The mixing means may have a screw-shaped blade continuously formed on the shaft, or a plurality of paddles.

For example, the additive 12 may be in a dry state having a moisture content of 10% or more and 15% or less, and the particle size may be 5 mm or less.

The additive 12 may include a pacifying agent (or bulking agent, bulking agent) and a complementary agent (amendment) that increase the amount without affecting the properties of the sludge 11 .

The sludge 11 may have a moisture content of 75% or more and 85% or less.

As such, the moisture content presented in this embodiment is adjusted close to the numerical value presented in the actual process, and may not have an accurately designated numerical value. That is, it is preferable that the numerical values presented in this embodiment be understood as numerical values capable of deriving an optimal result.

The first dryer 30 receives the primary mixture generated by the mixer 20 and performs drying. That is, in the first dryer 30, a drying process for lowering the moisture content of the primary mixture to the first moisture content is performed.

The first dryer 30 may dry the primary mixture by various methods to have a primary moisture content.

For example, the first dryer 30 may be dried by heat of burning fuel such as gas or petroleum, or may be dried using natural light. Alternatively, the first dryer 30 may be dried by heat decomposed or oxidized in the process of reacting the organic material in the primary mixture with microorganisms or oxygen.

In addition, the first dryer 30 may use a thermal dryer as the first dryer 30 , and both the first dryer 30 and the second dryer 40 may be configured as thermal dryers.

However, in one embodiment of the present invention, it will be described that the first dryer 30 is a bio-drying device for drying by microorganisms, and the second dryer 40 is a thermal drying device.

Thus, the first dryer 30 supplies oxygen (O ₂ ) in the air to the inside of the first dryer 30 to induce the metabolic action of aerobic microorganisms, and organic matter is converted into carbon dioxide (CO ₂ ), water ( H ₂ O) and ammonia (NH ₃ ) Using the heat of metabolism generated when decomposed to dry the primary mixture. Through this, the first dryer 30 dries so that the moisture content of the sludge 11, which is about 75% to 85%, becomes a moisture content of 35% or more and 40% or less, which is the first moisture content.

The first moisture content is experimentally calculated and may vary depending on the scale and drying efficiency of the first dryer 30 .

If the first moisture content is set to 40% or more, the efficiency may decrease in the drying process by the second dryer 40 and the drying period may increase. That is, the consumption of fuel used for drying by heating of the second dryer 40 may be increased.

On the other hand, when the first moisture content is set to less than 35%, the size of the first dryer 30 is increased, or the time the primary mixture stays in the first dryer 30 is increased, so that drying efficiency is reduced. That is, according to the adjustment of the first moisture content, economical efficiency due to an increase in fuel consumption for drying or an increase in cost for manufacturing and operating the dryer or an increase in the residence time in the first dryer 30 may cause a decrease in efficiency.

Accordingly, the first moisture content is a matter to be adjusted according to the configuration of the dryer in the sludge fuel conversion system 10, and does not necessarily have to be defined as a moisture content of 35% or more and 40% or less.

The second dryer 40 produces a dry mixture by drying the primary mixture supplied from the first dryer 30 to a second moisture content, which is a moisture content that can be molded into fuel by secondary drying.

To this end, the second dryer 40 is provided with a heat transfer means for heating and drying the primary mixture therein. In addition, the second dryer 40 prevents the primary mixture from being separated into the sludge 11 and the additive 12 during the heating process to maintain the mixed state, and to increase the contact rate between the heat transfer means and the mixture. It may include a stirring means for stirring.

The second dryer 40 uses an indirect heating method by a heat source to prevent carbonization or oxidation in the process of drying the primary mixture of the first moisture content, and to increase heat utilization efficiency.

To this end, the second dryer 40 passes a heating medium supplied through a pipe from a heating device such as a boiler or heater into the second dryer 40 to heat and dry the mixture. In addition, the second dryer 40 may further include a discharging means for discharging the moisture and mixture dust inside the second dryer 40 generated by heating and drying to the outside.

The second dryer 40 dries the primary mixture to generate a dry mixture having a second moisture content, and supplies the dry mixture to the molding machine 50 . Like the first dryer 30 , the second dryer 40 may be configured to allow continuous input and continuous discharge.

Here, in the case of a continuous input and continuous discharge method, the drying efficiency may be reduced due to an increase in the size of the second dryer 40 and an increase in the amount of fuel used. Therefore, the second dryer 40 may be operated in such a way that it performs drying of a predetermined set capacity unit in consideration of efficiency, discharges all of the dry mixture, and then receives the primary mixture again. However, the drying method of the set capacity unit is more advantageous for drying, and the continuous input and continuous discharge methods are not unavailable, and thus the present invention is not limited thereto.

To this end, an intermediate storage tank (not shown) in which the primary mixture discharged from the first dryer 30 is primarily stored may be provided between the first dryer 30 and the second dryer 40 .

The molding machine 50 produces solid fuel by press-molding the dry mixture supplied from the second dryer 40 . Here, the produced solid fuel may be a pellet fuel.

The molding machine 50 may be an injection molding machine for pressure molding, and may include an injection tool, a pressing unit for pressing the dry mixture to the injection tool, and a supply unit for supplying the dry mixture between the pressing unit and the injection mold. .

Of course, the molding machine 50 may produce a solid fuel by pressing the dry mixture in the form of compressed coal, which is one large mass, in addition to pellets, which are small-sized masses.

On the other hand, the heat treatment apparatus 1 is provided with a solid fuel inlet 110 on one upper side, a gas outlet 120 on the other upper side, and a solid fuel outlet for discharging the heat-treated solid fuel to the outside at one lower side ( 130) is provided with the body portion 100; 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 heating medium supply pipe 200 which is disposed as and extends along the longitudinal direction; The body part ( 100) stacked along the height direction and installed to extend along the longitudinal 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 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 that 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 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

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 consists 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 .

And, although not shown in the drawing, on one side of the outer surface of the body 100 , a temperature sensor for measuring the temperature inside the body 100 raised by the heat medium supply pipe 200 and the temperature inside the body 100 It is effective that a timer for measuring the time during which the solid fuel is heat treated is provided.

By allowing the temperature sensor to measure the temperature inside the body 100, the inside of the body 100 can be maintained at a required temperature, and by measuring the time for heat-treating the solid fuel using the timer Accurate heat treatment of fuel can be achieved.

In addition, after the heat treatment of the solid fuel is completed and the odor is removed, the solid fuel may be fed into a separate cooler 60 to be cooled.

The solid fuel is heat-treated in order to remove the odor generated from the solid fuel manufactured by using the solid fuel manufacturing system having the heat treatment device for removing odors from the sewage sludge solid fuel according to an embodiment of the present invention having the configuration as described above. The process is explained 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 rotates 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 transferred along the mesh conveyor 300 in a stacked form.

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 heating medium passes through the heating medium supply pipe 200, the internal space of the body part 100 is heated to a constant temperature, and at this time, the temperature of the internal space is formed to be 200 ℃ ~ 250 ℃, preferably 230 ℃. It is effective to form

While the inside of the heated body part 100 is transferred by the mesh conveyor 300, the solid fuel is heat-treated. At this time, the heat treatment time is the most effective for about 30 minutes.

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 the exhaust gas generated in the process of heat treatment is It 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 exhaust pipe 400 to be exhausted so that additional removal is performed to complete the heat treatment of the solid fuel. do.

The solid fuel that has been subjected to heat treatment through the above-described process to remove odors is fed into a separate cooler 60 for cooling, thereby completing the production of the solid fuel.

The solid fuel manufacturing system having a heat treatment device for removing odors from sewage sludge solid fuel having the above configuration is a solid fuel manufactured by supplying heat to the solid fuel to evaporate internal and external moisture and volatilizing and removing odorous substances. It is possible to improve the durability and storability of the manufactured solid fuel by suppressing the generation of decay and odor that may occur during transport and storage, 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 with the root are all included in the scope of the present invention.

1: heat treatment device 10: solid fuel manufacturing system
20: mixer 30: first dryer
40: second dryer 50: molding machine
60: cooler 100: body part
110: solid fuel inlet 120: gas outlet
130: solid fuel outlet 200: heating medium supply pipe
300: mesh conveyor 400: exhaust gas exhaust 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 mixer 20 for producing a primary mixture by mixing sludge or additives;
a first dryer 30 for primary drying the primary mixture supplied from the mixer 20 to a first moisture content;
a second dryer 40 for producing a dry mixture of a second moisture content by heating and drying the first mixture of the first moisture content;
a molding machine 50 for molding a solid fuel by pressure molding the dry mixture; and
a heat treatment device (1) for heat-treating the solid fuel injected into the mold after the molding is completed so as to remove the odor generated from the solid fuel molded in the molding machine (50); including,
The heat treatment apparatus 1 is provided with a solid fuel inlet 110 at one upper side, a gas outlet 120 at the other upper side, and a solid fuel outlet 130 for discharging the heat-treated solid fuel to the outside at one lower side. ) provided with a body portion 100 and; 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 heating medium supply pipe 200 which is disposed as and extends along the longitudinal direction; The body part ( 100) stacked along the height direction and installed to extend along the longitudinal direction, the mesh conveyor 300 on which the solid fuel is seated; includes,
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. becomes,
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 solid fuel manufacturing system having a heat treatment device for removing 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. delete delete delete delete The method of claim 1,
A heat treatment device for removing bad odor 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 A solid fuel manufacturing system equipped with 7. The method of claim 6,
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 A solid fuel manufacturing system equipped with a heat treatment device for removing odors from sewage sludge solid fuel. 7. The method of claim 6,
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. A solid fuel manufacturing system equipped with a heat treatment device for removing odors from sewage sludge solid fuel. According to claim 1,
On one side of the outer surface of the body part 100, a temperature sensor for measuring the temperature inside the body part 100 raised by the heating medium supply pipe 200, and the solid fuel by the temperature inside the body part 100 A solid fuel manufacturing system having a heat treatment device for removing odors from sewage sludge solid fuel, characterized in that a timer for measuring the time to be heat treated is provided. 10. The method of any one of claims 1, 6 to 9,
The solid fuel production system having a heat treatment device for removing odors from sewage sludge solid fuel, characterized in that the solid fuel that has been heat treated in the heat treatment device (1) is fed into a separate cooler (60) to cool it.

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