KR200199740Y1 - The apparatus of the sludge and waste by incinerating - Google Patents

Abstract

The present invention relates to a sludge and waste incineration treatment apparatus for treating food waste or sludge without pollution by low cost by drying the sludge and solidifying it into small lumps to incinerate the heat.

The sludge and waste incineration treatment apparatus of the present invention is provided with a drying cylinder having a scraper for spreading the sludge evenly installed at the end of the feed screw and the feed screw blade in parallel with the shaft inside the cylinder. Multi-stage drying furnace to pass through, a cake molding machine which is connected to the final outlet of the drying furnace and extruded sludge dried and discharged into a small solid mass, a burner and an air supply pipe is installed at one side in the lower portion and provided with an outlet at the center The incinerator 30 to incinerate the solid sludge supplied from the molding machine at the bottom of the drying furnace, and is connected to the upper portion of the incinerator 30 and installed in communication with the drying furnace, and provided with a dust outlet at the bottom of the incinerator 30. Cyclone that injects burned air to discharge dust to the bottom and to supply combustion heat to the drying furnace. It consists of a transport conveyor for conveying the material discharged from the dust collector and the incinerator 30 and the dust collector.

Description

The apparatus of the sludge and waste by incinerating}

The present invention relates to a sludge and waste incineration apparatus for treating food waste or sludge at low cost by drying the waste such as sludge, solidifying it into small lumps, and incineration treatment using the heat for sludge drying. .

Due to the serious damage caused by environmental pollution, increasing interest in preventing environmental pollution around the world, and the resulting measures are being applied to countries through international agreements, the target countries are making efforts to respond appropriately. .

In response to this trend, Korea has established and implemented environmental conservation plans, and as part of this, the construction of sewage treatment plants and industrial wastewater treatment plants is increasing every year.

However, although the effect of reducing water pollution is visible by the construction of sewage treatment plants and industrial wastewater treatment plants, many problems for the treatment of sludge have been raised as the amount of sludge generated during treatment increases rapidly.

At present, the treatment of such sludge depends mainly on landfill, which causes secondary environmental pollution such as land and groundwater pollution due to landfill shortage and leachate. Therefore, the government's environmental regulations are expected to be strengthened gradually according to the treatment of sludge, and the appropriate treatment technology of sludge is reviewed in each city, including the establishment of a regulation on the treatment obligation for waste companies with more than 10,000 wastes per year. It is becoming.

In order to solve these problems, incineration without pollution is being actively reviewed while supporting sludge reduction and stable treatment.

However, as the sludge incineration technology is not very experienced, indiscriminate incineration equipments suffer from trial and error, and as the scale of these facilities increases, not only does it cost a lot of facilities but also costs a lot of operating costs. There are disadvantages.

The present invention has been devised to solve such a conventional problem, the purpose of which is to improve the structure of the drying furnace to dry the sludge having a water content of 80% with a high drying efficiency of less than 30%, and dried sludge or food It is to provide a sludge and waste incineration treatment apparatus that can reduce the operating cost by operating less fuel and improving energy efficiency by incineration waste and incineration in the combustion chamber to use the waste heat for sludge drying.

1 is a perspective view of a sludge incineration treatment apparatus according to the present invention.

Figure 2 is a cross-sectional view showing the structure of the sludge incineration treatment apparatus according to the present invention.

Figure 3 is a plan sectional view showing the interior of the combustion chamber of the sludge incineration treatment apparatus of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10-drying furnace 11-drying cylinder 12-connecting shoe

13-Input Hopper 14-Endothermic Pin 15-Transfer Screw

16-axis 17-blade 18-scraper

19-Case 20-Vent 21-Cake Molding Machine

22-Branch line 23-Metering unit 24-Chain

30-Incinerator 32-Inlet 33a, 33b, 33c-Vent

34-burner 35-turntable 36-shaft

37-motor 38-chain 39-guide plate

40-Dust collector 41-Discharge pipe 42-Ash outlet

44-Transfer Conveyor

The present invention for achieving the above object,

In the incineration of sludge and waste which is supplied with the input sludge and dried by a drying apparatus, the dried sludge is supplied to an incinerator for incineration treatment,

The sludge dried in the drying apparatus is formed into a solid mass through a cake molding apparatus, and the formed sludge is supplied to an incinerator to be incinerated, and the generated heat is supplied to the drying apparatus to be used for drying the sludge. The sludge was supplied to the inside of the sludge drying apparatus to dry the sludge as residual heat and then discharged. The discharged gas was supplied to a separate dust collector for exhaust.

Sludge is composed of organic, inorganic and moisture. Of course, the distribution may vary according to region or season, but on average, 40 to 50% of organic matters and 60 to 40% of inorganic matters are excluded.

Most of this ratio of sludge contains about 80% of water, which is reduced to about 30% and compressed to form a solid solid of a certain size, which can be used as fuel. In other words, the portion to be used as fuel is organic matter and has a calorific value of about 3500 K㎈ / kg.

With this amount of heat, enough heat is needed to dry the sludge, so it can be dried with only heat to incinerate the sludge.

Of course, in the process of supplying the initial sludge, the drying process is performed as fuel, that is, gas such as LPG or LNG, liquid fuel or solid fuel, and when the sludge starts to be formed into a solid mass of a certain size, it is used as the main fuel. . If the heat generated from burning the caked sludge is insufficient to dry the sludge, the combustion efficiency of the sludge may be increased by supplementing the auxiliary fuel or supplying oxygen (pure oxygen).

In addition, the sludge treatment apparatus that allows such treatment,

A fixed-quantity supply device for supplying only a certain amount from the sludge input hopper,

A multi-stage drying furnace provided with a drying cylinder having a scraper for spreading the sludge evenly installed at the end of the feed screw and the feed screw blade in parallel with the shaft inside the cylinder;

A cake molding machine connected to the final discharge port of the drying furnace to extrude the sludge dried and discharged into a solid mass of a predetermined size;

An incinerator for burning a solid sludge mass supplied from a molding machine at a lower portion of the drying furnace by installing a burner and an air supply on one side of the lower portion and an outlet at a center portion thereof;

A cyclone dust collector connected to an upper portion of the incinerator and installed to communicate with a drying furnace, and having a dust outlet at a lower portion thereof to inject air combusted from the incinerator to discharge dust to the lower portion, and to supply combustion heat to the drying furnace;

It consists of a conveying conveyor for conveying the ash discharged from the incinerator and the dust collector.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of the sludge incineration treatment apparatus according to the present invention, Figure 2 is a cross-sectional view showing the structure of the sludge incineration treatment apparatus according to the present invention, Figure 3 is a flat showing the inside of the combustion chamber of the sludge incineration treatment apparatus according to the present invention It is a section.

Reference numeral 24 is a chain for driving the feed screw shaft 16, 25 is a drive motor for rotating the feed screw shaft.

The sludge and waste incineration treatment apparatus of the present invention is provided with a drying furnace 10 at the top, a cake molding machine 21 for molding the dried sludge into a solid mass of a certain size, and incinerated by receiving the formed sludge The incinerator 30 and the dust collector 40 which collects the combustion gas combusted from the incinerator in the cyclone type | mold, and the sludge fixed-quantity supply apparatus 23 is provided in the upper part of the inlet of the drying furnace 10. As shown in FIG.

Drying furnace 10 is composed of a plurality of cylindrical drying cylinder 11 and the transfer screw 15 therein, a plurality of parallel installation up and down, the outlet of the upper drying cylinder 11 is the lower drying cylinder ( 11) The sludge is connected to the inlet and the connection shoe 12 is connected to receive the relay. At this time, an inlet hopper 13 for receiving sludge is installed at the inlet of the uppermost drying cylinder 11, and a plurality of endothermic fins 14 protrude a plurality of heat absorbing pins on the outer wall of each drying cylinder 11 to absorb a lot of heat. Formed.

The conveying screw 15 inside the drying cylinder 11 forms a spiral shape by connecting the arc shaped blade 17 around the shaft 16 as a support, and at the end of the conveying screw blade 17 An elongate flat iron scraper 18 is provided in parallel with the shaft 16. At least two scrapers 18 are installed on the conveying screw 15 to spread the sludge evenly on the inner wall of the drying cylinder 11 so as to increase the drying effect. The drying cylinders 11 arranged in this structure may be installed in multiple rows adjacently.

A circumference of the drying cylinder 11 is covered with a case 19 made of a material having a good thermal insulation effect, and an exhaust port 20 is installed at one upper side thereof.

In addition, a transport conveyor 44 (not shown in the drawing) is installed at the outlet of the drying cylinder 11 installed at the lower end, and a cake molding machine 21 is installed at the end of the transport conveyor. The cake molding machine 21 extrudes the dried sludge to form a small solid mass having good combustion efficiency during combustion.

The drying furnace 10 is provided with an inlet 32 through which the sludge mass supplied from the cake molding machine 21 is introduced, and the air inlets 33a, 33b, 33c and the burner 34 are provided around the inner lower portion. It is installed. The air vents 33a, 33b, 33c and the burner 34 are provided to face in one direction. In addition, the bottom of the rotating plate 35 is installed to be rotated, and the shaft tube 36 is rotatably coupled to the main body at the center of the rotating plate 35 and the sprocket is installed at the lower end thereof so that the motor 37 and the chain ( 38) is configured to rotate during incineration. Therefore, when the molded sludge mass is supplied, it is made to rotate with the rotating plate 35. And the guide plate 39 arranged inclined toward the center portion is installed on the upper side of the rotary plate 35 in multiple stages, so that the introduced sludge mass is incinerated and gradually moved toward the outlet by the guide plate 39. In addition, the rotating plate 35 has a rotation direction opposite to the blowing direction.

The dust collector 40 is installed at the side of the incinerator 30 and is connected to the incinerator 30 and the combustion gas is introduced therein. A discharge pipe 41 protruding downwardly is formed in the upper center of the dust collector 40, and a hopper-shaped ash discharge port 42 is formed in the inner lower part. Therefore, the combustion gas introduced from the incinerator 30 is lowered while turning down and discharged through the discharge pipe 41, the dust having a weight is discharged to the discharge port 42 again. In addition, the discharge pipe 41 is connected to the drying furnace 10 so as to heat the drying furnace 10. The partition plate partitioning the drying furnace 10, the incinerator 30, and the dust collector 40 is a radiation plate 51 which absorbs heat and radiates it, so that once heated, the heat is continuously applied to the drying furnace 10. do.

In addition, the lower portion of the incinerator 30 and the dust collector 40 is configured with a conveying conveyor 44 for conveying the ash discharged to the discharge pipe 36 and the ash discharge port 42, which is also through a conveyor not shown in the drawings. It is transferred to the waste disposal device.

In addition, the exhaust port 20 of the drying furnace 10 is branched into several branches in order to reuse the residual heat of the exhaust gas and then connected to each drying cylinder 11 so that the residual heat of the exhaust gas can directly dry the sludge.

Looking at the operating state of the sludge and waste incineration treatment apparatus of the present invention having such a configuration as follows.

First, the incinerator 30 is operated by igniting a burner 34 that burns fuel such as oil or gas while supplying air to the incinerator 30 through the air vents 33a, 33b, 33c. Heat generated in the incinerator 30 is introduced into the drying furnace 10 to heat each drying cylinder 11. At this time, a plurality of heat absorbing fins 14 formed on the outer wall of the drying cylinder 11 absorbs a lot of heat.

In this state, the sludge having a water content of about 80% is introduced into the inlet hopper of the drying cylinder 11 located at the top end of the drying furnace 10 through a sludge metering supply device. The sludge is heated while being transferred into the drying cylinder 11 by the transfer screw 15. In particular, because the scraper 18 provided in the transfer screw 15 is spread thinly to the inner wall of the drying cylinder 11, the drying effect is further increased.

If the structure passes through the final drying furnace 10 through the multi-stage drying cylinder 11, the water content of the sludge is approximately 30%. The dry sludge in this state flows back into the cake molding machine 21 and is formed into a small solid mass which is easily burned. The formed sludge mass is fed to the incinerator 30. The supplied sludge mass is incinerated by the burner 34 while falling to the rotating plate 35. The sludge mass has a high calorie calorie and starts to burn, and the heat is introduced into the drying furnace 10 and used to dry the sludge. When the sludge mass starts to burn as described above, the sludge can be sufficiently dried by the heat of combustion of the sludge itself without a separate fuel supply.

On the other hand, the sludge to be burned by incineration is rotated by the rotating plate 35 and the combustion efficiency is further increased because air is supplied in the rotating direction. In addition, the rotated sludge is gradually transported to the inside by the guide plate 39 installed on the top of the rotating plate 35 while rotating, and the calorie contained in the sludge is burned out, leaving only pure ash. . This sludge ash is discharged through the outlet.

In addition, combustion heat and gases generated as the sludge is incinerated in the incinerator 30 are introduced into the cyclone dust collector 40 installed at the side through the upper connector. In the dust collector 40, combustion heat and gas are turned down while the combustion gas and the light combustion gas are discharged to the drying furnace 10 through the discharge pipe 41 to heat each drying cylinder 11, and the dust having a heavy weight is inertial. It is discharged by falling to the outlet of the lower part.

The sludge ash and dust discharged to the inlet of the incinerator 30 and the dust collector 40 are transported by a transfer conveyor 44 to undergo a separate treatment process.

In addition, the exhaust gas which flows into the drying furnace 10 and heats each drying cylinder 11 and is discharged to the exhaust port 20 is supplied to each drying cylinder 11 through the branch pipe again branched and the residual heat of the exhaust gas. The sludge conveying the drying cylinder 11 to the furnace is directly dried and is discharged by removing the moisture generated during drying. Exhaust gas discharged is discharged to the atmosphere through a separate dust collector (40).

As discussed above, the present invention is designed to be dried while transporting the drying method in a thin unfolded state through a scraper in a drying cylinder, thereby reducing the water content of sludge from 80% to less than 30% in a short time and drying the sludge. As a cake molding machine, it is formed into small solid mass and then incinerated, so the incineration efficiency is excellent and the heat of combustion generated as the sludge mass is incinerated is supplied to the drying furnace to be used to dry the sludge. It is possible to save a lot of operating costs because it can get enough heat for sludge drying without supply.

Claims (7)

A fixed amount supply device 23 for supplying only a predetermined amount from the sludge input hopper, The sludge is provided with a drying cylinder 11 having a scraper 18 installed at the end of the feed screw 15 and the feed screw blade 17 in parallel with the shaft 16 to evenly spread the sludge. The multi-stage drying furnace 10 to be passed through the relay type, A cake molding machine 21 which is connected to the final discharge port of the drying furnace 10 and extrudes the sludge dried and discharged into a solid mass of a predetermined size; An incinerator 30 for connecting the burner 34 and the air supply pipe to one side of the lower portion and having an outlet in the center to incinerate the sludge cake supplied from the molding machine in the lower portion of the drying furnace 10 to heat the drying furnace; Sludge and waste incineration treatment device, characterized in that consisting of a conveying conveyor 44 for conveying the ash discharged from the incinerator (30). The sludge and waste incineration treatment apparatus according to claim 1, wherein a plurality of endothermic fins (14) are provided on an outer wall of the drying cylinder (11) of the drying furnace (10). According to claim 2, the rotary plate 35 is installed on the bottom of the incinerator 30, the shaft tube 36 having a discharge port in the center thereof is rotatably installed vertically, the lower end of the shaft tube 36 Sludge and waste incineration treatment apparatus, characterized in that the chain 38 is connected to the motor 37 so as to rotate at a constant speed during the incineration process. [4] The sludge and waste incineration treatment apparatus according to claim 3, wherein the sludge and waste incineration treatment apparatus are formed by installing a plurality of guide plates 39 formed in an inclined side toward the center portion on one side of the rotating plate 35 to gradually move the injected sludge mass toward the outlet. . 4. The sludge and waste incineration treatment apparatus according to claim 3, wherein the sludge and the waste plate are made in the direction opposite to the blowing direction in the rotation direction of the rotating plate. According to claim 1, It is connected to the upper portion of the incinerator 30 is installed to communicate with the drying furnace 10, provided with a dust outlet in the lower portion by injecting the air burned in the incinerator 30 to discharge dust to the bottom And, the heat of combustion sludge and waste incineration treatment apparatus, characterized in that the cyclone dust collector (40) for supplying the drying furnace (10) is installed so that the incineration heat is supplied to the drying furnace (10) through the dust collector. The method according to claim 1, wherein the communication for discharging the exhaust gas introduced into the drying furnace 10 is divided and connected to each drying cylinder 11 so that the residual heat of the exhaust gas can directly dry the sludge. Sludge and waste incineration plant.