KR20000054505A - Device for drying and incinerating the sludge of incinerating furnace - Google Patents

Abstract

PURPOSE: A device for drying and burning waste materials of an incinerator is provided to save costs concerned with drying and burning the waste matters. CONSTITUTION: Waste matters are inputted in an inlet hopper(114) of an incinerator(100). The waste matters are inputted in a first drying chamber(120) on an upper side in a state that the size of the waste matters is regulated by a roller(114a). The waste matters are transferred to the left side in a rotation state of a screw conveyer(13) and transferred to a second drying chamber(121) after agitated and crushed by a blade(131a). Herein, the steam from the waste matters is discharged to the outside of the incinerator through a discharge hole(113) and purified in a rear end equipment. The waste materials are supplied to an absorption conduit(147) through a discharge conduit of the drying chamber and then a first combustion chamber(180). At the same time, the waste matters are burned up by hot wind from a hot wind supply conduit of the incinerator(140).

Description

Device for drying and incinerating the sludge of incinerating furnace}

The present invention relates to an incineration apparatus that incinerates waste such as sludge or agricultural products produced in the process of treating sewage or wastewater, and in particular, simultaneously performs the drying and incineration functions of the waste, as well as using waste heat from the incinerator. The present invention relates to a waste drying and incineration apparatus of an incinerator in which waste can be dried.

In general, a large amount of sludge is generated in the process of treating waste such as domestic sewage, manure, livestock waste, and factory wastewater, which is dewatered and landfilled or dried to separate the cake. It is removed by incineration using a device of.

However, the method of landfilling waste is dehydrated sludge, and the cake is buried in a separate landfill, which not only restricts the selection of landfill site but also causes severe odors in the surroundings and damage to health and hygiene. There was a problem that caused problems of water quality and air pollution due to leachate.

Accordingly, a method of dewatering and drying the water contained in the sludge generated during the treatment of waste and then incineration by using a heating device such as an incinerator has been developed to bury in landfills.

However, the waste incineration method has a problem in that an additional dehydration and drying process for removing moisture from the waste and a separate incineration process for burning dry waste are added, thereby increasing the associated costs related to waste incineration. there was.

Accordingly, the present invention has been made to solve the problems described above, by performing the drying function and incineration of the waste at the same time, as well as drying the waste in the dryer using the waste heat of the incinerator, to dry and incinerate the waste The purpose is to provide waste drying and incineration equipment for incinerators that can reduce the associated costs.

1 is a schematic diagram showing a treatment process of an incinerator according to the present invention;

Figure 2 is a schematic internal structure of the waste drying and incineration apparatus according to the present invention,

3 is a schematic side view of a waste drying and incineration apparatus according to the present invention;

Figure 4 (a) and (b) is another embodiment of the incineration apparatus according to the present invention,

5 is a schematic operation state diagram of the combustion gas amount control device according to the present invention,

Figure 6 (a) to (d) is a view showing a blade of the waste shredding apparatus of the incinerator according to the present invention.

Explanation of symbols on the main parts of the drawings

100: incinerator 120: dryer

121: drying chamber 131: screw conveyor

140: incinerator 142: hot air supply pipe

144: recirculation pipe 150: secondary combustion chamber

160: gas volume control plate 180; Primary combustion chamber

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in the schematic diagram of FIG. 1, the waste stored in the waste tank 1 is once contained in the storage tank 2 and transferred to the incinerator 100 through the belt conveyor 3, and then the incinerator 100. It is added to the inlet hopper 114 of the drying process and incineration process to a single fixed process.

In addition, the waste gas discharged from the discharge pipe of the dryer 120 passes through the cyclone 8 and the air preheater 7 and is then discharged to the outside through the stack 6 after the dust is removed from the dust collector 5. At this time, the combustion air is preheated by the waste heat of the waste gas while passing through the air preheater (7) is fed by the blower (9) and supplied again to the incinerator (140).

Figure 2 is an internal structure of the waste drying and incineration apparatus according to the invention, Figure 3 is a side view of the waste drying and incineration apparatus according to the present invention, Figure 5 is an operating state diagram of the combustion gas control apparatus according to the present invention, Figure 6 (a) to (d) is a view showing the blade of the waste shredding apparatus of the incinerator according to the present invention,

Both sides of the housing are used to construct a device for drying and incineration of waste which is dried and then incinerated with sludge or agricultural and aquatic waste containing water generated during the treatment of pollutants such as domestic sewage, manure, livestock wastewater and factory wastewater. In addition, a plurality of drive means 111 as a power source and a plurality of burners 112 as a heating source are mounted, and an inflow hopper 114 as an input pipe for waste S is mounted on an upper surface thereof, and an inflow hopper 114 in an inner space. At least two or more drying chambers 121 are provided to dry the waste S introduced from the water and remove water, and the screw transfers the waste S while rotating by the driving means 111 in the drying chamber 121. A dryer 120 equipped with a conveyor 131;

On the upper surface of the housing, the seating surface on which the dryer 120 is mounted is formed, and a burner 112 as a heating source is mounted on the side surface, and hot air is injected into the primary combustion chamber 180 forming the inner space through the blower. It consists of an incinerator 140 equipped with a supply pipe 142.

Here, the incinerator 100 of the present invention includes a dryer 120 having a predetermined size for accommodating and drying the waste conveyed from the belt conveyor 3 and a waste discharged from the dryer 120 while the dryer 120 is mounted. It is added that the incinerator 140 of a predetermined size to receive and incinerate.

And, the dryer 120 is a housing for drying the waste conveyed from the belt conveyor (3), a plurality of drive means 111 for rotating the screw conveyor 131 in one direction on both sides of the housing, and the inner space A plurality of burners 112 for supplying hot air are mounted.

Of course, the drive means 111 is composed of a motor (not shown) that transmits power through a chain to the sprocket mounted on one end of the screw conveyor 131, the burner 112 is a drying chamber 121 It is mounted to face up.

In addition, the dryer 120 is equipped with an inflow hopper 114 that is a waste input pipe on the upper surface, as well as an air hole 115 and a drying chamber 121 for discharging the gas dust accumulated in the dryer 120 at the side surface. Each inspection window 116 for inspection and maintenance is installed.

Of course, a plurality of rollers 114a are provided in the discharge line of the inflow hopper 114 to supply the prescribed amount of waste to the drying chamber 121 by adjusting the input amount or size of the waste S conveyed by the belt conveyor. It is.

In addition, a drying chamber 121 is formed in the interior space of the dryer 120 to form a space in a multi-step from the upper side to the lower side, the spray device for spraying water on the ceiling surface of the upper drying chamber of the drying chamber 121 125 is mounted.

Of course, a plurality of installation holes for installing the burners 112 are formed in the side wall of the drying chamber 121, and a plurality of installation holes for installing the air holes 115 and the inspection windows 116 are formed therethrough. .

In addition, the screw conveyor 131 is a rotary body mounted in the drying chamber 121 to transfer the waste S to the post-treatment process. The screw conveyor 131 is agitated and crushed to the waste S, which is supplied to the drying chamber 121 and transported to the outer circumferential surface thereof. The blade 131a is mounted in multiple stages to be inclined at a predetermined angle.

Of course, the blades 131a independently mounted on the outer circumferential surface of the screw conveyor 131 may be formed in four to eight blades per two cycles of the screw conveyor 131 to adjust the transport, agitation, and crushing according to the physical properties of the waste.

On the other hand, the incinerator 140 is a housing for incineration of the dry waste falling in the dried state in the dryer 120, the burner 112 as a heating source is mounted on the side wall, the injection hole is formed in a multi-step in the inner wall center The hot air supply pipe 142 is rotatably mounted to form a primary combustion chamber 180.

In addition, the waste (S) falling from the incineration chamber 121 of the incinerator 120 is floated or rotated during the flow of hot air to the injection hole formed in the outer circumferential surface of the hot air supply pipe 142, the thermal contact of the waste The rounded air nozzle 142a, which increases the area, is mounted in multiple stages.

In addition, a spiral heating plate 143 is mounted on the inner wall of the incinerator 140 to give a lag time to the waste S that floats and rotates due to the hot air injected from the hot air supply pipe 142 to facilitate combustion. .

In addition, the recirculation pipe 144 for re-injecting the incineration gas discharged from the primary combustion chamber 180 of the incinerator 140 to the dryer 120 at the outlet side of the incinerator 140 and the inlet side of the dryer 120. Is connected.

Of course, the incinerator 140 has a conical shape whose cross section is reduced toward the rear side such that the incineration gas of the primary combustion chamber 180 is smoothly re-supplied to the dryer 120 through the recirculation pipe 144. It is preferable to form the shaft portion 145.

In addition, when the waste is not burned due to overdosing of the waste, a non-combustible gas is moved to the secondary combustion chamber 150 by installing a gas amount control plate 160 on the upper side of the primary combustion chamber 180 to be incinerated by the burner.

Of course, the secondary gas chamber 150 is hinged by the gas amount control plate 160 that adjusts the flow rate of the preheating gas while the elevating by the interaction of the drive gear 162 and the driven gear 163 during the rotation of the handle 161. Are combined.

Therefore, even when the burners 112 mounted on both side walls of the dryer 120 are “off”, the incineration gas discharged from the incinerator 140 is supplied to the dryer 120 through the recirculation pipe 144. Therefore, the waste that was put into the dryer 120 is to be continuously dried.

On the other hand, Figure 4 (a) and (b) is another embodiment of the incinerator according to the present invention, as a means for supplying the hot air conveyed from the blower 9 to the primary combustion chamber 180 of the incinerator 140 A spiral hot air spray nozzle 190 is mounted.

Of course, the incinerator 140 of Figure 4, the heating plate 143 mounted on the inner wall, the recirculation pipe 144 connected between the dryer 120, and the secondary combustion chamber (mounted on the upper side of the primary combustion chamber 180 ( 150).

Therefore, the incinerator 140 of FIG. 4 has the same operation and structure as the incinerator 140 of FIG. 2, except that the hot air spray nozzle 190 is mounted on the inner wall of the incinerator instead of the hot air supply pipe 142. In addition, it is noted that there is a difference only in that the shape of the shaft tube part 145 is deformed.

Hereinafter, described in detail with reference to the accompanying drawings illustrating the operation according to the present invention.

First, in order to dry and incinerate waste by using the apparatus of the present invention, once the dryer 120 is mounted on the seating surface of the incinerator 140 and fixed, the discharge pipe 127 of the dryer and the suction pipe passage of the incinerator ( 147) to connect and communicate with each other.

Then, when the waste S transported by the belt conveyor 5 is introduced into the inlet hopper 114 of the incinerator 100, the waste 114 is firstly installed by the roller 114a installed in the inlet hopper 11. In a state where the size is adjusted, the dryer 120 is introduced into the drying chamber 121 of the upper side, for example.

Subsequently, the waste S introduced into the first drying chamber 121 is transferred to the left side in the drawing during the rotation of the screw conveyor 131, and at the same time, the second drying chamber 121 is agitated or crushed by the blade 131a. Is transferred to.

Of course, the waste (S) supplied to the second drying chamber 121 is heated by the burner 112 and the water is removed to some extent, wherein the water vapor removed to the outside of the incinerator 100 through the discharge port 113. It is discharged and moved to a rear end facility with an adsorption facility (not shown) to be purified.

Subsequently, the waste S from which most of the water is removed while passing through the third drying chamber 121 is supplied to the inlet pipe 147 of the incinerator through the discharge pipe 127 of the drying chamber and supplied to the primary combustion chamber 180. It is combusted by hot air injected from the hot air supply pipe 142 of the incinerator 140.

sure. Waste (S) is injured or rotated by the hot air injected through the air nozzle 142a of the hot air supply pipe 142 as well as incinerated while rotating in a spiral along the heating plate 143, the contact area with the hot air to the maximum do.

Therefore, the hot air injected into the incinerator 140 through the hot air supply pipe 142 promotes the combustion of fuel supplied through the burner 112, for example, diesel, and also causes the waste to float and increase the combustion efficiency. do.

On the other hand, the incineration gas generated from the primary combustion chamber 180, the recirculation pipe 144 connecting the incinerator 140 and the dryer 120 in a state in which the flow rate is increased through the shaft portion 145 of the incinerator 140. Is supplied back to the dryer (120).

Of course, the waste gas discharged from the discharge pipe of the dryer 120 passes through the cyclone 8 and the air preheater 7, and after the dust is removed from the dust collector 5, is purified to the outside through the stack 6. Discharged.

At this time. Combustion air is preheated by the waste heat of the waste gas while passing through the air preheater (7) is fed by the blower (9) and is supplied back to the incinerator (140).

If the waste in the incinerator 140 does not burn smoothly, when the discharge passage of the secondary combustion chamber 150 is opened, the combustion gas is burned through the secondary combustion chamber 150 in the incinerator 140 to recycle the pipeline 144. To be discharged.

That is, when the handle 161 mounted on the outer circumferential surface of the incinerator 140 is rotated in one direction, the drive gear 162 is rotated, so that the driven gear 163 engaged with it is rotated in one direction so that the size of the discharge pipe is increased. Adjusted.

At this time, the gas amount adjusting plate 160 is moved up / down by the interaction between the drive gear 162 and the driven gear 163 to regulate the discharge pipe of the secondary combustion chamber 150, whereby the incineration gas of the incinerator 140 is the secondary combustion chamber. Reburned by the burner of 150 is easily re-supplied to the dryer 120 through the recirculation pipe 144.

On the other hand, when the gas dust is stacked and cleaned in the small dryer 120, once the internal space through the check window 116 of the dryer 120 to determine the cleaning time. If the gas dust is stacked in the dryer 120 and the drying temperature does not rise to a certain amount, the air hole 115 is opened and the air blower 9 is idling to forcibly discharge the gas dust to be removed from the cyclone 8.

Of course, when the spray device 125 mounted on the ceiling surface of the drying chamber 121 constituting the dryer 120 is operated, contaminants accumulated in the drying chamber are removed by water sprayed through the spray device 125. will be.

According to the waste drying and incineration apparatus of the incinerator according to the present invention as described in detail above, by mounting the dryer on the upper surface of the incinerator to perform the drying and incineration function simultaneously, the installation area for installing the incinerator is minimized and space In addition to the advantages in terms of use, there is an effect of reducing the transport and equipment costs of waste.

In addition, by drying the waste in the dryer by using the waste heat of the combustion gas discharged from the incinerator, fuel consumption is minimized to reduce various incident costs related to incineration, and the waste is incinerated while rotating in the incinerator. This has the effect of increasing the combustion efficiency.

Claims (11)

In constructing a device for drying and incineration of waste which dries and then incinerates sludge containing moisture generated during the treatment of pollutants such as domestic sewage, manure, livestock wastewater and factory wastewater, A plurality of drive means 111 as a power source and a plurality of burners 112 as a heating source are mounted on both sides of the housing, and an inflow hopper 114 as an input pipe for waste S is mounted on the upper surface thereof, and an inflow hopper is provided in the inner space. At least two drying chambers 121 are provided to dry the waste S introduced from the 114 to remove moisture, and the waste S is transferred to the drying chamber 121 while being rotated by the driving means 111. A dryer 120 equipped with a screw conveyor 131; On the upper surface of the housing, the seating surface on which the dryer 120 is mounted is formed, and a burner 112 as a heating source is mounted on the side surface, and hot air is injected into the primary combustion chamber 180 forming the inner space through the blower. Waste incinerator and incineration apparatus, characterized in that consisting of incinerator 140 is equipped with a supply pipe 142. The method of claim 1, wherein the discharge port of the inlet hopper 114, a plurality of rollers (114a) to be supplied to the drying chamber 121 to increase the surface area by adjusting the amount or size of the waste (S) is mounted Waste drying and incineration units in incinerators. The waste drying and incineration apparatus of claim 1, wherein a blade (131a) inclined at a predetermined angle is mounted on the outer circumferential surface of the screw conveyor (131) to stir or crush the waste (S). The air nozzle 142a of claim 1, wherein an injection hole of the hot air supply passage 142 is formed to increase or increase the thermal contact area by causing the waste S supplied into the incinerator 140 to float or rotate. Waste drying and incineration apparatus of the incinerator, characterized in that it is mounted spirally. The helical heating plate 143 of claim 1, wherein the inner wall of the incinerator 140 is provided with a spiral heating plate 143 which enlarges the contact area of the waste S, which is floated or rotated by the hot air injected from the hot air supply pipe 142. Waste incinerator and incinerator, characterized in that. The waste drying and incineration apparatus of claim 1, wherein a recirculation pipe 144 is provided at an outlet side of the incinerator 140 to supply the incineration gas discharged from the incinerator to the dryer 120. . According to claim 1, characterized in that the inner wall of the incinerator 140, the spiral hot air spray nozzle 190 for supplying hot air fed from the blower (9) to the primary combustion chamber (180) is mounted in multiple stages. Waste drying and incineration units in incinerators. The conical shaft portion of claim 1 or 6, wherein the incineration gas of the primary combustion chamber 180 is smoothly re-supplied to the dryer 120 through the recirculation pipe 144 at the rear end of the incinerator 140. 145) is a waste drying and incineration apparatus of the incinerator characterized in that formed. According to claim 1, in the upper side of the incinerator 140, by installing the gas amount control plate 160, the non-combustible gas is moved to the secondary combustion chamber 150 when the non-combustion due to the over-dose of the waste, etc. to be re-burned by the burner Waste incinerator and incinerator, characterized in that. 10. The method of claim 9, wherein the secondary combustion chamber 150, while adjusting the flow rate of the combustion gas while descending by the interaction of the drive gear 162 and the driven gear 163 during the rotation process of the handle 161, Waste volume drying and incineration apparatus of the incinerator, characterized in that the gas volume control plate 160 is hinged. The waste incinerator according to claim 1, wherein a suction pipe passage 147 is formed on the seating surface forming the upper surface of the incinerator 140 so as to communicate with the discharge pipe passage 127 of the dryer 120 to drop the waste. Drying and Incineration Units.