KR100619506B1 - waste cable recycling device using the heat source from burning up of waste materials - Google Patents

Abstract

The present invention relates to a waste cable recycling apparatus, a waste incinerator (10) for injecting combustible waste incineration; A waste cable melting furnace 20 for melting the cover of the waste cable using the combustion heat of the incinerator 10; A secondary combustion chamber 30 for burning unburned gas in the waste incinerator 10; A water-cooled heat exchanger 40 for cooling a high temperature combustion gas generated at waste incineration below 250 ° C; A cyclone (50) for removing by a centrifugal force a substance having a particle diameter of 5 µm or more among particulate contaminants contained in the combustion gas generated during incineration of waste; An air-cooled heat exchanger 60 for secondarily cooling the combustion gas passing through the cyclone 50; Dry scrubber to remove gaseous contaminants by chemical reaction by supplying activated carbon and chemical lime which are highly reactive with contaminants in powder form to remove particulate gaseous contaminants such as sulfur oxides and dioxins in the combustion gas (70) ); A dust collector 80 for collecting particulate contaminants contained in the combustion gas and removing fine dust, soot and gaseous contaminants by pre-coating slaked lime sprayed from the dry scrubber 70; and combustion And exhaust flue 90 for finally discharging gas into the atmosphere.

Waste cable, incineration, waste, heat of combustion, waste heat, pollution-free, dry scrubber, recycling

Description

Waste cable recycling device using the waste incineration heat as a heat source {waste cable recycling device using the heat source from burning up of waste materials}

1 is a block diagram showing the configuration and processing of the waste cable recycling apparatus according to the present invention;

Figure 2 is a side view showing the overall configuration of the waste cable recycling apparatus according to the present invention,

Figure 3 is a plan view showing the overall configuration of the waste cable recycling apparatus according to the present invention,

Figure 4 is a side view showing the incinerator structure of the waste cable recycling apparatus according to the present invention,

5 is a plan view showing the configuration of a closed cable melting tank,

6 is a plan view of the secondary combustion chamber structure

7 is a plan view showing the structure of a water-cooled heat exchanger,

8 is a side view showing the structure of a cyclone;

9 is a side view showing the structure of an air-cooled heat exchanger,

10 is a side view showing the structure of the cleaning and slaked lime spraying unit,

11 is a side view showing the structure of the bag filter,

12 is a side view showing the flue structure;

13 and 14 are a front view and a cross-sectional view of the waste cable stripping device according to the applicant's pre-registration utility model.

* Explanation of symbols for main parts of the drawings

10: incinerator 11: hoist

12: inlet 13: blower

14: air box 20: waste wire melting furnace

21 chamber 22 closed cable container

23: gas discharge line 30: secondary combustion chamber

31: auxiliary burner 32: combustion gas inlet

33: outlet 34: refractory brick

35: heat insulating material 40: water-cooled heat exchanger

41 chamber 42 tube

43: combustion gas inlet 44: combustion gas outlet

45: bulkhead 46,47: cleaning hole

48: steam outlet 49: water supply tank

50: cyclone 60: air-cooled heat exchanger

61: combustion gas inlet 62: outlet

63: heat exchange chamber 64: blower

65 tube 70 dry cleaner

71: hopper 72: metering unit

73: blower 74: supply line

75: mixing tube 80: bag filter

81: filter bag 82: vibrator

83: rotary valve 84: dust box

90: exhaust year 92: manned blower

 W: waste

The present invention relates to a waste cable recycling apparatus using heat of waste incineration as a heat source, by using the waste heat generated by incineration of waste to melt away the coating of the waste wire, and to effectively remove dust and harmful gas generated during incineration of waste. It allows the waste wires to be recycled without the occurrence of secondary pollution.

Cables collectively referred to as electric wires and various signal lines transmit electricity and signals, and conductors are inserted into the cables, and the conductors are covered with synthetic resin or the like. Since the conductor inside the cable is made of an expensive metal such as copper, waste wires or ridge wires generated during the construction and repair of the cable are worth collecting and recycling.

The prior art related to the present invention discloses a "closed cable stripping device" of the applicant's prior registered utility model No. 215981, which can be accommodated as can be seen in the prior art drawings of Figs. A tank 1 having an inner space and a door 2 installed at a side thereof, a furnace body 3 installed at an upper side of the tank 1 and indirectly supplied with a thermal power of the burner 4, Into the reactor 5, which is installed to penetrate up and down the furnace body 3, and has a filtering net 9 and an outlet 6 formed so that the coated melt of the waste cable C located therein is directed to the tank 1. It is composed.

On the other hand, the applicant's prior registration utility model used expensive fossil fuel as the fuel of the burner to melt the waste cable sheath, there was a problem that the cost of recycling the waste cable is expensive.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to significantly reduce the operating cost of the apparatus by using waste heat generated when burning waste in the apparatus for melting and removing the cover of the waste cable. In addition to reducing costs, by effectively removing the pollutants generated during the combustion of waste, to provide a facility that can effectively recycle the waste cable with the incineration of waste without the generation of air pollution.

In order to achieve the above object, the present invention is a waste incinerator for incineration by inputting combustible waste; A waste cable melting furnace for melting the cover of the waste cable using the combustion heat of the incinerator; A secondary combustion chamber for combusting unburned gas in a waste incinerator; A water-cooled heat exchanger for cooling the hot combustion gas generated at the time of waste incineration to 250 ° C. or less; Cyclone for removing the particle size of 5㎛ or more of the particulate contaminants contained in the combustion gas generated during incineration of waste by centrifugal force; An air-cooled heat exchanger for secondarily cooling the combustion gas passing through the cyclone; A dry scrubber for removing gaseous contaminants by chemical reaction by supplying activated carbon and chemical lime which are highly reactive with contaminants in powder form to remove particulate gaseous contaminants such as sulfur oxides and dioxins contained in the combustion gas; A dust collector for collecting particulate contaminants contained in the combustion gas and removing fine dust, soot and gaseous contaminants by pre-coating slaked lime sprayed in a dry scrubber; And an exhaust flue for finally discharging the combustion gas to the atmosphere.

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

1 is a block diagram showing the configuration and processing of the waste cable recycling apparatus according to the present invention, Figures 2 and 3 are a side view and a plan view showing the overall configuration of the waste cable recycling apparatus according to the present invention, respectively.

As shown in FIG. 1 to FIG. 3, the present invention includes a waste incinerator 10 for injecting and combusting flammable waste; A waste cable melting furnace (20) for melting the cover of the waste cable using the combustion heat of the incinerator; A secondary combustion chamber 30 for burning unburned gas in a waste incinerator; A water-cooled heat exchanger 40 for cooling a high temperature combustion gas generated at waste incineration below 250 ° C; A cyclone (50) for removing by a centrifugal force a substance having a particle diameter of 5 µm or more among particulate contaminants contained in the combustion gas generated during incineration of waste; An air-cooled heat exchanger (60) for secondarily cooling the combustion gas passing through the cyclone; Dry scrubber to remove gaseous contaminants by chemical reaction by supplying activated carbon and chemical lime which are highly reactive with contaminants in powder form to remove particulate gaseous contaminants such as sulfur oxides and dioxins in the combustion gas (70) ); A dust collector 80 for collecting particulate contaminants contained in the combustion gas and removing fine dust, soot and gaseous contaminants by pre-coating slaked lime sprayed from a dry scrubber; It comprises a; exhaust flue 90 for discharge to the atmosphere.

As shown in FIG. 4, the waste incinerator 10 lifts waste to be incinerated into the hoist 11 and collectively inputs it into the inside through the inlet 12 at the upper portion, and uses the auxiliary burner 31. The temperature of the outlet of the secondary combustion chamber 30 is increased to 800 ° C. or more, and then ignited by incineration. The incinerator 10 is composed of two units, as shown in the plan view of FIG. 3, respectively in the incinerator 10. The closed cable melting tank 20 is connected so that one side incinerator 10 and the other side incinerator 10 can be operated in order.

In this incinerator 10, the waste W is incinerated by a semi-drying method, and unburned gas (incomplete combustion gas) is completely burned by supplying a sufficient amount of air from the secondary combustion chamber 30 described later.

The inside of the incinerator 10 has a refractory brick structure, and a blower 13 and an air box 14 are installed at a lower side so as to maintain a stable combustion atmosphere by forcibly supplying air for incineration of waste. .

In the incinerator 10, reference numeral 15 denotes a ash discharge port for discharging the burned ashes, reference numeral 16 denotes a gas discharge port through which hot combustion gas is discharged, and is connected to a closed cable melting tank 20, and reference numeral 17 denotes a steam discharge port to be.

As shown in FIG. 5, the waste cable melting furnace 20 is stripped by melting high temperature waste heat energy generated during incineration of the waste incinerator 10, which is a primary combustion chamber, by melting the coating of the waste wire as a heat source. Although the structure inside the closed cable melting tank 20 is the same as the configuration of the applicant's prior application model No. 2215981, the detailed description thereof will be omitted.

As shown in FIG. 5, in the closed cable melting tank 20 according to the present invention, a closed cable container 22 is installed inside the chamber 21 to which combustion heat is supplied from the incinerator 10. The sheath of the spent cable is melted, and the gas generated when the waste cable is melted is supplied to the secondary combustion chamber 30 through the gas discharge line 23 so that complete combustion can be achieved.

In the closed cable melting tank 20, 24 is a combustion gas inlet connected to the incinerator 10, and 25 is a combustion gas outlet for discharging the combustion gas to the secondary combustion chamber after melting the waste cable.

As shown in FIG. 6, the secondary combustion chamber 30 is provided with an auxiliary burner 31 in front of the incinerator 10, which is the primary combustion chamber, in order to completely burn gas generated during melting of the waste cable. Combustion gas inlet 32 through which the unburned gas flowing through the closed cable melting tank 20 flows is formed at both sides of the flame of the auxiliary burner 31, and a combustion gas outlet 33 is formed at the rear to form a secondary combustion chamber. The outlet 33 of the temperature 30 can be maintained at 800 ° C or higher.

The secondary combustion chamber 30 is also surrounded by the refractory brick 34 and the heat insulator 35 so as to be able to operate in a safe state.

As shown in FIG. 7, the water-cooled heat exchanger 40 is provided with a plurality of tubes 42 through which cooling water passes horizontally in the chamber 41 so as to be discharged from the secondary combustion chamber 30 at a high temperature (900 ° C.). To prevent the normal performance of the associated facilities and to prevent corrosion due to high temperature, by means of primary cooling of the combustion gas at about 250 ° C, symbol 43 is a combustion gas inlet, symbol 44 is a combustion gas outlet, and Are bulkheads, 46, 47 and 48 are cleaning and steam outlets, respectively.

The tube 42 is to be supplied to the cooling water using a water supply pump in a separate water supply tank 49, this water supply tank in the event of an emergency, such as a fire due to the excessive temperature of the combustion gas flowing into the bag filter to be described later It is designed to supply spraying water to the extinguishing nozzle installed in the ballast.

The cyclone 50 is used to firstly dust dust having a relatively large particle size (more than 5 μm) among the particulate contaminants contained in the combustion gas generated during incineration of waste by centrifugal vibration damping principle. Since it will be apparent to those skilled in the art to which the invention pertains, a detailed structure thereof will be omitted and the schematic form thereof is as shown in FIG.

The air-cooled heat exchanger (60) is to prevent the inlet of the combustion gas into the high temperature and ember filtration system, the combustion gas exited through the water-cooled heat exchanger (40) by the overheating of the secondary combustion chamber (30) If an emergency occurs due to the discharge of the bag filter above the operating temperature, the cooling blower 64 automatically operates to maintain the proper inlet temperature of the combustion gas, and automatically stops when the steady state is maintained. The cause of fire in the filter dust collection facility due to the gravity sedimentation of the ember due to the slow tower flow velocity of the combustion gas is removed in advance.

As shown in FIG. 9, the air-cooled heat exchanger 60 has a combustion gas inlet 61 formed at an upper portion thereof, and an outlet 62 at which a secondary cooled combustion gas is discharged formed at a lower portion thereof. The heat exchange chamber 63 is provided at an intermediate portion, and the chamber 63 is forcibly introduced with air by the blower 64, and a plurality of tubes 65 through which the combustion gas passes to form heat exchange with the air. ) Is installed vertically.

In the drawing, reference numeral 66 denotes an air outlet through which air which has undergone heat exchange with combustion gas passing through the tube 65 in the chamber 63 is discharged, and reference numeral 67 denotes a recollection box installed below the heat exchanger 60.

The dry scrubber 70 supplies activated carbon and chemical lime which are highly reactive with contaminants in powder form to remove particulate and gaseous contaminants such as sulfur oxides and dioxins contained in the combustion gas and react with the chemical reactions with the combustion gas. As a facility for removing gaseous contaminants, it is connected to the outlet 62 side of the air-cooled heat exchanger 60, as shown in FIG. It consists of a hopper 71 in which activated carbon or chemical lime is stored, a hydrated lime measuring unit 72 for measuring a predetermined amount of activated carbon or chemical lime in the hopper 71, and a blower for blowing activated carbon or lime in a predetermined amount. (73) and a supply line (74) for supplying activated carbon or chemical slaked lime into the neck of the mixing tube (75) in the form of the venturi tube by the blower (73). It becomes bait.

The dust collector 80 dusts particulate contaminants contained in the combustion gas with high efficiency and collects fine dust, soot and gaseous contaminants by pre-coating activated carbon or slaked lime injected from the dry scrubber 70. 11, the dust attached to the filter bag 81 is automatically shaken off during operation by the air pulse type vibrator 82, the separated dust is a rotary valve installed in the lower portion ( 83) to be kept airtight and to be discharged to the dust box 84.

The exhaust flue 90 is installed at a height such that the combustion gas can be sufficiently diffused into the atmosphere as shown in FIG. 12, and a manned blower 92 is installed between the dust collector 80 in the incinerator 10. A large amount of the combustion gas generated is discharged to the atmosphere to the outlet of the flue (90) without clogging in the exhaust pipe path, and on the suction side duct pipe of the manned blower (92) to properly control the emission of the combustion gas The damper is installed to maintain a stable atmosphere of the combustion chamber to induce complete combustion.

The flue and the main duct is made of stainless steel with excellent corrosion resistance to increase durability and to have a beautiful appearance.

The present invention configured as described above, as can be seen in the process diagram of FIG. 1, by collecting the waste cable in the container 22 of the waste cable melting tank 20, by inputting the combustible waste collected in the incinerator 10 The incineration heat generated during the incineration of wastes by incineration melts the sheath of the waste cable in the waste cable melting tank 20 and separates it from the copper therein, and the combustion gas after melting the waste cable sheath is secondary combustion chamber 30. After the complete combustion, the first cooling in the water-cooled heat exchanger (40) and the cyclone 50 in the particulate contaminants contained in the combustion gas particles of 5㎛ or more to remove the centrifugal force. Combustion gas from which the contaminant having a large particle size is removed through the cyclone 50 is cooled again by heat exchange with air in the air-cooled heat exchanger 60 in the second time, thereby securing safety of the filter dust collector 80 which is a facility thereafter. After removing the particulate and gaseous pollutants from the dry scrubber 70 and the bag filter 80, the combustion gas is discharged through the flue 90.

As described above, since the waste wire incineration apparatus of the present invention uses the heat of combustion of waste as a heat source, it is economical because it requires a lower maintenance cost than the existing equipment for melting the cover of the waste cable by using expensive fossil fuel. Since various pollutants generated are processed in multiple stages, secondary pollution does not occur, so regardless of the installation location of the facility, the combustible wastes injected into the incinerator are put in by the hoist and can be operated remotely to make the work clean. The waste heat of the water-cooled heat exchanger can be recovered and utilized for heating in a factory or office, and thus has a useful energy saving effect.

Claims (5)

delete Waste incinerator 10 for injecting and burning flammable waste, waste cable melting furnace 20 for melting the cover of waste cables using the combustion heat of the incinerator 10, and unburned in the waste incinerator 10 Contained in the secondary combustion chamber (30) for combusting the waste gas, the water-cooled heat exchanger (40) for cooling the high-temperature combustion gas generated at the time of incineration of the waste below 250 ° C, and the combustion gas generated at the time of incineration of the waste. Cyclone 50 for centrifugally removing substances having a particle diameter of 5 μm or more among particulate contaminants, an air-cooling heat exchanger 60 for secondarily cooling the combustion gas passing through the cyclone 50, and contained in the combustion gas. In order to remove particulate gaseous contaminants such as sulfur oxides and dioxins, activated carbon and chemical lime which are highly reactive with contaminants are supplied in powder form, Dry dust cleaner 70 to remove dust contaminants, particulate matter contained in combustion gas, and fine dust and soot by pre-coating slaked lime sprayed from the dry cleaner 70. A dust collector (80) for removing gaseous contaminants and an exhaust flue (90) for finally discharging the combustion gas into the atmosphere; The secondary combustion chamber 30 has an auxiliary burner 31 installed on the front surface, and combustion gas inlet 32 through which the unburned gas flowing through the closed cable melting tank 20 flows into both flames of the auxiliary burner 31. ) Is formed, and the combustion gas outlet 33 is formed at the rear to maintain the temperature of the outlet 33 of the secondary combustion chamber 30 at 800 ° C. or more, and to the refractory brick 34 and the heat insulating material 35. Waste cable recycling apparatus using waste incineration heat as a heat source, characterized in that enclosed. The method according to claim 2, The air-cooled heat exchanger 60 has a combustion gas inlet 61 formed at an upper portion thereof, an outlet 62 at which a secondary cooled combustion gas is discharged formed at a lower portion thereof, and a heat exchange chamber 63 provided at an intermediate portion thereof. In this chamber 63, air is forcibly introduced by the blower 64, and a plurality of tubes 65 through which combustion gas passes vertically are installed vertically so as to exchange heat with the air. Waste cable recycling apparatus. The method according to claim 2, The dry scrubber 70 is connected to the outlet 62 side of the air-cooled heat exchanger 60, and the structure of the dry scrubber 70 is made of a mixing tube 75 in the form of a venturi tube, and activated carbon or chemical lime And a hydrated lime metering unit 72 for measuring the activated carbon and the chemical slaked lime stored in the hopper 71 by a predetermined amount, and a blower 73 for blowing the activated carbon or hydrated lime measured by a predetermined amount, and the blower A waste cable recycling apparatus using waste incineration heat as a heat source, characterized in that it comprises a supply line 74 for supplying activated carbon or chemical calcined lime to the neck of the mixing tube 75 of the venturi tube type by 73. . delete

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