KR20080101522A - Apparatus for pulverizing and incinerating food waste - Google Patents

Abstract

An apparatus for pulverizing and incinerating a food waste is provided to incinerate a dried food waste completely to minimize noxious fume. A food waste is dehydrated in a dehydration unit(10). A drying unit(20) is in one end of a chamber(30). And the drying unit includes the first steam discharge hole(32) through which steam generated in the chamber is discharged. A burner(46) heats a food waste within the first transfer apparatus(42) in an external tube(44). A transfer and heating unit includes the second stream discharge hole(48) through which steam generated within the external tube is discharged. A pulverization unit(50) pulverizes the dried food waste transferred from the first transfer apparatus.

Description

Food waste powdering and incineration unit {APPARATUS FOR PULVERIZING AND INCINERATING FOOD WASTE}

1 is a schematic view of the food waste powdering apparatus according to an embodiment of the present invention

Figure 2 is a schematic diagram of the powdered food waste incineration apparatus according to an embodiment of the present invention

3 is a schematic view of an oil co-injection burner which is a preferred example of the low temperature and high temperature burners 84, 85, 86, 87 of FIG. 2.

4 is a right side view of FIG.

5 is a schematic diagram of the hydrogen-oxygen mixed gas generator 180 of FIG. 3.

6 is a plan view of the re-deposited portion 94 of FIG.

Figure 7 is a schematic diagram of the food waste powdering and incineration apparatus according to an embodiment of the present invention

<Explanation of symbols for the main parts of the drawings>

10: dehydration part 20: drying part

40: conveying and heating part 50: powdered part

70: inlet 80: incineration

90: ash removal unit

The present invention relates to an incineration apparatus for drying and incineration of food waste.

Food waste from homes and restaurants is disposed of separately from other recyclable waste. Most of these food wastes contain water, have a peculiar smell, and are easily decayed over time.

As a method of treating food waste, there is a method of landfilling in a landfill, but when food waste is buried, the water contained in food waste contaminates the soil, and the leachate contaminates rivers, rivers, or water supplies. Have

In addition, since food waste contains a large amount of salt, it is difficult to use it as a fertilizer.

Therefore, in recent years, a method of incineration after removing water from food waste is used, but there is a problem that a large amount of harmful exhaust gases such as dioxins and carbon monoxide are generated by incomplete combustion.

The present invention has been made to solve the above-mentioned problem, and an object thereof is to completely burn dried food waste to minimize harmful exhaust gas.

In order to achieve the above object, the food waste powdering apparatus according to the present invention comprises: (a) a dehydration unit into which food waste is input and dehydrated; (b) the second belt conveyor below the first belt conveyor of the uppermost layer is arranged to be moved forward than the first belt conveyor, and the third belt conveyor below the second belt conveyor is arranged to be spaced apart from each other. A plurality of belt conveyors arranged backward in a manner that the back belt is discharged backward from the two belt conveyor, and the fourth belt conveyor under the third belt conveyor is arranged in a zigzag manner in a forward arrangement than the third belt conveyor, and made of a breathable belt, and the dewatering part The food waste dehydrated in the first belt conveyor moves in one direction, falls to the second belt conveyor, and moves from the second belt conveyor in a direction opposite to the moving direction of the first belt conveyor. Falls to a three-belt conveyor, the third belt conveyor in the second belt conveyor A belt conveyor driving unit which drives the plurality of belt conveyors to move in a zigzag manner in a direction opposite to the same direction and then falls into the fourth belt conveyor, and is located below the plurality of belt conveyors and is hot air upward. A hot air fan for drying food waste on the breathable belt by blowing air, a chamber surrounding the plurality of belt conveyors, and a first steam outlet disposed at one end of the chamber to discharge water vapor generated from the chamber; Drying section; (c) a first conveying apparatus for conveying dried food waste conveyed from a belt conveyor of a lowermost layer among the plurality of belt conveyors, an outer tube surrounding the first conveying apparatus spaced apart, and the first tube in the outer tube A transfer and heating unit including a burner for heating food waste in a transfer device, and a second steam discharge port through which steam generated in the outer tube is discharged; And (d) a powdering unit for powdering the dried food waste conveyed from the first transfer device.

In order to achieve the above object, the powdered food waste incineration apparatus according to the present invention comprises (a) a third conveying apparatus for conveying the powdered food waste toward the combustion chamber, and the powdered food waste conveyed by the third conveying apparatus. An inlet comprising a first blower for blowing waste into the combustion chamber through the combustion chamber sidewalls; (b) a combustion chamber, a low-temperature burner installed on the side of the combustion chamber lower than the input unit and burning the injected powdered food waste, and installed on the side of the combustion chamber above the input unit, and the powder injected A high temperature burner which burns the ignited food waste, generates a higher temperature than the low temperature burner, and completely burns the incomplete combustion gas generated when the low temperature burner burns the powdered food waste, and exhaust gas is discharged. Blown upwards, a roast stall installed in the lower portion of the low-temperature burner, and combustion residues provided on the side wall of the combustion chamber near the rostol and suspended on the rostol or deposited on the rostol. An incinerator including a second blower; And (c) a ash removal unit positioned below the rostol to remove ash falling through the rostol.

In order to achieve the above object, the food waste powdering and incineration apparatus according to the present invention includes the food waste powdering apparatus and the powdered food waste incineration apparatus.

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

1 is a schematic diagram of a food waste powdering apparatus according to an embodiment of the present invention.

Referring to this, the food waste powdering apparatus according to the present invention includes a dewatering unit 10, a drying unit 20, a conveying and heating unit 40, and a powdering unit 50.

The dewatering unit 10 is a portion into which food waste is input and dewatered, and preferably includes two rollers 12 in contact with each other. The food waste is dewatered by the two rollers 12 and the dewatered water is discharged to the outside.

The drying unit 20 includes a plurality of belt conveyors 21, 22, 23, 24, and 25, belt conveyor drives 27 and 28, hot air fans 29, chambers 30, and first steam outlets 32. It includes.

The plurality of belt conveyors 21, 22, 23, 24, 25 are arranged in a stacked manner spaced apart from each other, the second belt conveyor 22 under the first belt conveyor 21 of the uppermost layer is the first belt conveyor ( 21, the third belt conveyor 23 underneath the second belt conveyor 22 is reversed back than the second belt conveyor 22, and the fourth belt conveyor under the third belt conveyor 23 The 24 is arranged in a zigzag manner in a manner that is arranged forward than the third belt conveyor 23. In FIG. 1, five belt conveyors 21, 22, 23, 24, and 25 are illustrated, but this is only an example and an appropriate number of belt conveyors may be used as necessary.

The belt conveyor 21 has a belt 21d wound around the driving wheels 21a and 21b at both ends, and a plurality of support wheels 21c for supporting the belt 21d between the driving wheels 21a and 21b at both ends are provided. It is installed.

In addition, the belt 21d of the belt conveyor is made of a breathable material such as a net, so that it is easy to dry the food waste being transported on the belt 21d when the hot air is blown from below by the hot air fan 29 to be described later. Let's do it.

In the belt conveyor driving units 27 and 28, the food waste dewatered from the dewatering unit 10 moves in one direction from the first belt conveyor 21, and then falls to the second belt conveyor 22, and the second belt conveyor ( In 22, the first belt conveyor 21 moves in a direction opposite to the moving direction of the first belt conveyor 21 and then falls to the third belt conveyor 23, and the moving direction of the third belt conveyor 23 at the second belt conveyor 22. A plurality of belt conveyors 21, 22, 23, 24, and 25 are driven to move in a zigzag manner by moving in the opposite direction to the fourth belt conveyor 24.

Looking specifically at the driving of the belt conveyor 21, 22, 23, 24, 25, the rotational force of the first drive motor 27a is transmitted to the fifth drive wheel (25b) by the first drive belt (27b), The first chain 27c is sequentially transmitted to the third driving wheel 23b and the first driving wheel 21b. Similarly, the rotational force of the second driving motor 28a is sequentially transmitted to the fourth driving wheel 24a and the second driving wheel 22a by the second driving belt 28b and the second chain 28c. Accordingly, the belts 21d, 22d, 23d, 24d, and 25d on the belt conveyor move zigzag in the direction of the arrow shown in FIG. 1, and the food waste placed on the belts 21d, 22d, 23d, 24d, and 25d. The zigzag moves from the upper layer to the lower layer. In this case, since the moving path of the food waste becomes long, sufficient drying can be achieved by the hot air fan 29 described later.

The hot air fan 29 is positioned below the belt conveyors 21, 22, 23, 24, and 25, and blows hot air upwards to remove food waste on the breathable belts 21d, 22d, 23d, 24d, and 25d. It is to dry.

The chamber 30 surrounds a plurality of belt conveyors 21, 22, 23, 24, 25.

The first steam outlet 32 is located at one end of the chamber 30, preferably at an upper end thereof, and is a place where steam generated by drying by the hot air fan 29 is discharged from the chamber 30. Water vapor discharge is controlled by the valve 32a.

The conveying and heating section 40 includes a first conveying device 42, an outer tube 44, a burner 46, and a second steam outlet 48.

The first transfer device 42 is a place where the dried food waste is transported from the belt conveyor (the fifth belt conveyor) 25 of the lowermost layer among the plurality of belt conveyors. Food waste may be transferred from the lowermost belt conveyor 25 directly to the first conveying device 42, but provided with a second conveying device 60 between the lowermost belt conveyor 25 and the first conveying device 42. It is preferable. Preferably, the first and second transfer devices 42, 60 are screw conveyors, respectively. When both the first and second transfer devices 42 and 60 are provided, a hopper 43 is provided at both connecting portions to support the food waste discharged from the end of the second transfer device 60 so as not to fall to the outside. It is desirable to.

The upper portion of the first transfer device 42 is preferably open, which facilitates the discharge of water vapor generated when the food waste inside the first transfer device 42 is heated by the burner 46 to be described later. For that.

The outer tube 44 surrounds the first transfer device 42 spaced apart.

The burner 46 conveys the flame in the space formed by the first conveying device 42 and the outer tube 44, in particular the lower part of the first conveying device 42, and transports it in the first conveying device 42. The food waste being used is to dry once more.

The second steam outlet 48 is a place where steam generated from food waste is discharged by heating the burner 46. This water vapor is discharged through the above-mentioned opening portion of the first transfer device 42.

The powdering unit 50 is to powder the dried food waste transferred from the first transfer device 42, and preferably includes two rollers 52 in contact with each other. Food waste, which is secondarily dried in the transport and heating unit 40, flows into the roller 52 through the hopper 54 and is powdered. This powder is incinerated in an incineration apparatus described later. On the other hand, since the powder is derived from food waste, it can also be used as feed for animals.

Figure 2 is a schematic diagram of a food waste incineration apparatus according to an embodiment of the present invention.

Referring to this, the powdered food waste incineration apparatus according to the present invention includes an input unit 70, an incineration unit 80, and a ash removal unit 90.

The input unit 70 includes a third transfer device 72 and a first blower 74.

The third transfer device 72 transfers the powdered food waste toward the combustion chamber 82, and is preferably a screw conveyor. 72a represents a screw, 72b represents a hopper, 72c represents a screw shaft, 72d represents a coupling, and 72e represents a motor.

The first blower 74 blows the powdered food waste conveyed by the third transfer device 72 into the combustion chamber 82 through the combustion chamber sidewalls.

Incinerator 80 is combustion chamber 82, low temperature burners (86, 87), high temperature burners (84, 85), exhaust port 88, rostol (89), and the second blower (81) It includes.

The combustion chamber 82 is a place where the powdered food waste injected from the input unit 70 is burned.

The low temperature burner 86 is installed on the side wall of the combustion chamber lower than the input unit 70, and burns the powdered food waste with the flame. Low-temperature burners 86, 87 are preferably to generate a temperature of about 1000 ℃.

The high temperature burners 84 and 85 are installed on the side wall of the combustion chamber above the input unit 70, and burn the powdered food waste that is blown in, and have a higher temperature (1800 to 2000 ° C.) than the low temperature burners 86 and 87. Degree) and the incomplete combustion gas generated when the low-temperature burners 86 and 87 burn the powdered food waste. Examples of incomplete combustion gases include dioxins and carbon monoxide.

The food waste powder blown into the combustion chamber 82 by the first blower 74 in the input unit 70 is spread above and below the combustion chamber 82, and at the same time, the low temperature burners 86 and 87 and the high temperature burner ( 84, 85 are burned, and the gas incompletely burned by the low temperature burners 86, 87 rises and is completely burned by the high temperature burners 84, 85.

The low temperature and high temperature burners 84, 85, 86 and 87 are preferably gas and oil simultaneous injection burners, respectively.

3 is a schematic view of such a gas and oil simultaneous injection burner, and FIG. 4 is a right side view of FIG. 3.

3 and 4, the gas and oil simultaneous injection burners 84, 85, 86, and 87 may include an air chamber 160, a fan 170, an air injection port 130, The gas nozzle 110, the gas pipe 112, the gas supply means 180, the oil nozzle 120, the oil pipe 122, and the oil supply means 190 are included.

The fan 170 is connected to the air chamber 160, and the air injection ports 130 and 131 are formed at the front end 140 of the air chamber 160. Air introduced by the fan 170 flows out through the air chamber 160 to the air injection holes 130 and 131.

The gas nozzles 110 and 111 are provided in the front end part 140 of the air chamber 160 adjacent to the air injection ports 130 and 131, and the oil nozzle 120 is provided adjacent to this gas nozzle. A gas pipe 112 is connected to the gas nozzles 110 and 111, and a gas supply unit 180 is connected to the gas pipe 112. An oil nozzle 120 is connected to an oil pipe 122, and an oil supply means 90 is connected to the oil pipe 122.

From the above structure, a flame is formed through a mixed fluid of gas injected from the gas nozzles 110 and 111, oil injected from the oil nozzle 120, and air injected from the air injection ports 130 and 131. do.

In the front end portion 140 of the air chamber 160, the oil nozzle 120 is located at the center thereof, and a plurality of gas nozzles 110 and 111 are present to surround the oil nozzle 120, It is preferable that there are a plurality of air injection holes 130 and 131 so as to surround the gas nozzle 110. By doing so, a flame is formed uniformly by the combustion of a mixed fluid of gas, oil and air.

As the gas supply means, as shown in FIG. 5, it is preferable to use a hydrogen-oxygen mixed gas generator 180 that generates a hydrogen-oxygen mixed gas by electrolyzing water.

The hydrogen-oxygen mixed gas generator 180 injects an electrolytic solution (electrolyte solution in which electrolyte is dissolved in water) into the electrolytic cell 182 and generates a hydrogen and oxygen by applying a direct current power source 186 to both ends of the electrolytic cell 182. to be. Hydrogen is generated at the cathode of the electrolyzer 182 and oxygen is generated at the anode, and when the generated hydrogen and oxygen are combined together, a hydrogen-oxygen mixed gas having a chemical equivalent ratio of 2: 1 is obtained.

When the hydrogen-oxygen mixed gas is burned alone, a coherent explosion (condensation) phenomenon contracting toward the center of the flame occurs, and a high temperature of about 2,000 to 3,000 ° C. can be obtained by the condensation phenomenon.

The gas and oil simultaneous injection type burner does not burn the hydrogen-oxygen mixed gas generated as described above alone, but injects oil therein and blows air to form a flame suitable for the burner.

Meanwhile, in FIG. 3, the fixing plate 150 positioned between the front air chamber 162 and the rear air chamber 164 is for fixing the burner at a predetermined position where combustion is required. The fixing is made through the fastening hole 152.

The valve 116 is installed at a portion of the gas pipe 112 adjacent to the gas supply means 180 to adjust the amount of gas introduced therein.

The oil supply means 127 connected to the oil pipe 122 may include an oil tank 127, a pump 128, and a motor 129. The motor 129 rotates to drive the pump 128 to pump oil of the oil tank 127. The valve 126 is also installed in the oil pipe 122 portion adjacent to the oil supply means 190 to adjust the amount of oil introduced therein.

3 and 4, reference numerals 114 and 124 denote pressure gauges, 161 denote front cases, and 163 denote rear cases.

When the hydrogen-oxygen mixed gas generator 180 is used as a gas supply means, when igniting a gas and oil simultaneous injection type burner, the hydrogen-oxygen mixed gas must be supplied first to ignite and then oil. On the contrary, if the oil is first supplied and ignited, and then the hydrogen-oxygen mixed gas is supplied, the burner may be exploded.

Hereinafter, the incineration portion 80 of the powdered food waste incineration apparatus according to the present invention will be described with reference to FIG. 2.

The exhaust port 88 in the incinerator 80 is a place where exhaust gas is discharged after the food waste powder is completely burned by the low-temperature and high-temperature burners 84, 85, 86, and 87.

Rostol (89) is installed in the lower portion of the low-temperature burners (86, 87).

The second blower 81 is installed on the combustion chamber sidewall near the rostol 89 and serves to blow up the combustion residue suspended on the rostol 89 or deposited on the rostol 89. . Thus, the combustion residues are reburned by the low temperature burners 86 and 87 and the high temperature burners 84 and 85.

On the other hand, the ash removal unit 90 is located at the lower portion of the stall 89 to remove ash falling through the stall 89. The ash removal portion 90 preferably includes a ash deposition portion 94 and a ash discharge portion 96.

Ash dropped from the rostol 89 is deposited on the ash deposit 94, and the deposited ash is discharged through the ash discharge part 96.

The ash deposit 94 is provided with a rotary blade 95 driven by a motor 99 for pushing down the deposited ash to the ash discharge part 96.

6 is a plan view of such a repositioned portion 94.

2 and 6, when ash is deposited on the ash deposit 94, the motor 99 is driven to push the deposit onto the rotary blade 95 to fall to the outlet 96-1. 95-1 represents a rotating shaft, 91 represents a speed reducer.

The ash discharge part 96 is provided with the piston member 97 which pushes the ash pushed away by the rotary blade 95 from the ash deposit 94 back to the outside. The piston member 97 is driven by the hydraulic cylinder 98.

Figure 7 is a schematic diagram of the food waste powdering and incineration apparatus according to an embodiment of the present invention.

Referring to this, the food waste powdering and incineration apparatus according to the present invention is a combination of the food waste powdering apparatus as shown in Figure 1 and the powdered food waste incineration apparatus as shown in FIG.

The food waste powdering and incineration apparatus according to the present invention minimizes the harmful exhaust gas by completely burning the dried food waste and makes it possible to use the powdered food waste as animal feed.

Although the present invention described above has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications belong to the appended claims. .

Claims (12)

(a) a dewatering part into which food waste is input and dehydrated; (b) the second belt conveyor below the first belt conveyor of the uppermost layer is arranged to be moved forward than the first belt conveyor, and the third belt conveyor below the second belt conveyor is arranged to be spaced apart from each other. A plurality of belt conveyors arranged in a zigzag manner in such a manner that the back belt is discharged backward from the two belt conveyor, and the fourth belt conveyor under the third belt conveyor is arranged forward than the third belt conveyor. The food waste dewatered by the dewatering unit moves in one direction from the first belt conveyor and then falls to the second belt conveyor, and moves in a direction opposite to the moving direction of the first belt conveyor in the second belt conveyor. The plurality of belt conveyors so as to fall to the third belt conveyor and move in a direction opposite to the moving direction of the second belt conveyor in the third belt conveyor and then zigzag in a falling manner to the fourth belt conveyor. Belt conveyor drive unit for driving the, Located below the plurality of belt conveyors, hot air fan for blowing hot air upwards to dry the food waste on the breathable belt, A chamber surrounding the plurality of belt conveyors, A drying unit disposed at one end of the chamber and including a first steam outlet through which steam generated in the chamber is discharged; (c) a first conveying apparatus for conveying dried food waste conveyed from the belt conveyor of the lowest layer among the plurality of belt conveyors; An outer tube surrounding the first transfer device spaced apart; A burner for heating food waste in the first conveying device in the outer tube; A conveying and heating unit including a second steam outlet for discharging steam generated in the outer tube; And (D) a food waste powdering device comprising a powdering unit for powdering the dried food waste transported from the first transfer device. The method of claim 1, And a second conveying device for connecting the lowermost belt conveyor and the first conveying device. The method of claim 2, The first and second conveying apparatus is a food waste powdering apparatus, characterized in that each of the screw conveyor. The method of claim 1, Food waste powdering apparatus characterized in that the dewatering portion includes two rollers in contact. The method of claim 1, The first conveying apparatus is a food waste powdering apparatus, characterized in that the screw conveyor. The method of claim 1, The powdering unit is a food waste powdering device, characterized in that it comprises two rollers in contact. (a) a third transfer device for transferring the powdered food waste to the combustion chamber, An input unit including a first blower for blowing the powdered food waste transported by the third transfer device into the combustion chamber through the combustion chamber sidewall; (b) a combustion chamber, A low temperature burner installed at a lower side of the combustion chamber than the input unit and burning the injected powdered food waste; It is installed on the side of the combustion chamber above the input unit, and burns the powdered food waste that is blown, generates a higher temperature than the low temperature burner, and is generated when the low temperature burner burns the powdered food waste. High temperature burner which completely burns incomplete combustion gas, An exhaust port through which exhaust gas is discharged, Rostol and installed in the lower portion of the low-temperature burner, An incineration portion disposed on a side wall of the combustion chamber near the rostol, the incinerator including a second blower that floats on the rostol or blows up the combustion residues deposited on the rostol; And (C) a powdered food waste incineration apparatus including a ash removal unit located in the lower portion of the rostol to remove ash falling through the rostol. The method of claim 7, wherein The third conveying apparatus is a powdered food waste incineration apparatus, characterized in that the screw conveyor. The method of claim 7, wherein The low temperature and high temperature burners are respectively, Air chamber; A fan connected to the air chamber; An air injection port provided at a front end of the air chamber; A gas nozzle installed at a front end of the air chamber and adjacent to the air injection port; A gas pipe connected to the gas nozzle; Gas supply means connected to the gas pipe; An oil nozzle installed at the front end of the air chamber and adjacent to the gas nozzle; An oil pipe connected to the oil nozzle; And It includes an oil supply means connected to the oil pipe, Powdered food, characterized in that the gas and oil simultaneous injection burner, the flame is formed through the mixed fluid of the gas injected from the gas nozzle, the oil injected from the oil nozzle, and the air injected from the air injection port Garbage incinerator. The method of claim 9, The oil nozzle is located in the center of the front end of the air chamber, the plurality of gas nozzles are located in the form of surrounding the oil nozzles, the plurality of air injection holes exist in the form of surrounding the gas nozzles Powdered food waste incineration apparatus, characterized in that. The method of claim 9, The gas supply means is a powdered food waste incineration apparatus, characterized in that the hydrogen-oxygen mixed gas generator for electrolyzing water to generate a hydrogen-oxygen mixed gas. Food waste powdering apparatus according to any one of claims 1 to 6; And A food waste powdering and incineration device comprising the powdered food waste incineration device of claim 7.

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