WO1995027018A1

WO1995027018A1 - Method and apparatus for extracting gas from waste tires through thermal decomposition

Info

Publication number: WO1995027018A1
Application number: PCT/KR1995/000028
Authority: WO
Inventors: Hyeon Hee Lee
Original assignee: Hyeon Hee Lee
Priority date: 1994-03-30
Filing date: 1995-03-30
Publication date: 1995-10-12
Also published as: KR950026965A; KR0155064B1; AU2149095A

Abstract

The present invention relates to method and apparatus for extracting gas from waste tires through thermal decomposition characterized in that a plurality of waste tires are installed in a laminated fashion in a tank of a predetermined size which is designed to be supplied from the outside with hydrocarbon and oxygen for ignition and combustion of the tires so installed, that the interior of the tank is kept in a vacuum state and ash produced during combustion is discharged to the outside of the tank, that gas exhausted from the tank by means of a vacuum pump is separated into liquefied bunker fuel, water, hydrocarbon and carbon dioxide while it is passed through a heat exchanger and that carbon dioxide while it is passed through a heat exchanger and that carbon dioxide so produced is then re-supplied to an upper end tube of the tank so as to fill the space inside the tank made after waste tires are thermally decomposed.

Description

Title of invention

Gas extraction method and apparatus by pyrolysis of waste tire

The present invention relates to the pyrolysis of waste tires, and more specifically, can decompose and extract hydrocarbons and bunker heavy oil generated while the waste tires are pyrolyzed at low temperature in a low vacuum. The present invention also relates to a method and an apparatus for extracting gas by pyrolysis of the waste tire. Background art

Nowadays, as the automobile industry has developed rapidly, the supply of vehicles has increased, and as a result, tire production has increased.

As the production of tires increased, the disposal of used wastewater rose as a social problem.

Waste tires are high molecular weight compounds with a large amount of energy containing isoprene and hydrocarbons belonging to the hydrocarbon congeners, and can be decomposed in air or in the formation. Because it is delayed much, we use a method that mainly treats it by incineration. In other words, waste tires are incinerated, and the waste heat generated at this time is used for thermal power generation or boilers.

However, such an incineration method is harmful to the atmosphere due to various harmful gases and dust generated when burning waste waste. In addition to contaminating the incinerators, the incineration location was limited and its use was limited. Disclosure of the invention

Therefore, the present invention can not only be used in the fuel or chemical industry by pyrolyzing waste tires under low atmospheric pressure and with a small amount of fuel, but also can be used for storing and storing hydrocarbons. The purpose of the present invention is to provide a method and an apparatus for gas extraction by pyrolysis of waste tires, which can obtain heavy oil and have no pollution.

Also, the present invention provides a desired hydrocarbon group gas by a cracking method for controlling the internal pressure and the thermal decomposition temperature of a tank in which waste tires are laminated. To do so for another purpose.

The present invention for achieving such an object is to supply a combustion gas (or heavy oil) and oxygen from the outside, and to provide a predetermined-sized ink tank which is ignited and thermally decomposed. In this case, a large number of waste tires can be laminated inside, and at the bottom of the tank, the inside of the tank is maintained in a vacuum state, and at the same time, ash generated during pyrolysis is discharged to the outside. The gas discharged from the tank pump by the vacuum pump is separated into liquefied bunker heavy oil, water, hydrocarbon group gas and carbon dioxide while passing through a heat exchanger. In this way, the carbon dioxide is thermally decomposed and reduced by being supplied again to the tube located at the upper end in the tank. The space inside the tank, which is reduced by waste tires, is reduced. This is to reduce the load on the vacuum pump for the vacuum inside the tank by reducing unnecessary space inside the tank. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a configuration diagram showing a schematic configuration of the present invention. FIG. 2 is a cross-sectional view showing the structure of the dinner of the present invention. FIG. 3 is a schematic diagram showing the configuration of the ignition device of the present invention.

FIG. 4 is a schematic diagram showing the configuration of the heat exchanger of the present invention.

FIG. 5 is a perspective view showing a configuration of a sunset according to another embodiment of the present invention.

FIG. 6 is a sectional view showing the structure of a sunset according to another embodiment of the present invention.

FIG. 7 is a circuit diagram showing the operation of a sunset according to another embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a partial configuration of a sunset according to still another embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

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

FIG. 1 schematically shows the overall configuration of the present invention. In the tank 1 of a predetermined size, which receives supply of combustion gas and oxygen from the outside via the supply pipe 2, the internal waste tire is thermally decomposed, and the tank 1 is used. In the ash discharge section 3 mounted on the bottom surface, the vacuum is maintained by the vacuum pump 4 and at the same time, the generated ash is discharged to the outside. The gas discharged to the discharge pipe 9a by the pump 9 is supplied to a first heat exchanger 5 using water of a constant temperature, a second heat exchanger 6 for liquefying a single-strength oil, and steam (H). Carbon dioxide passing through the vacuum pump 9 through a third heat exchanger 7 for liquefaction of ₂₀ ) and a fourth heat exchanger 8 for liquefaction of hydrocarbon group gas in order. (C 0 ₂₎ is formed in the lid i 1 if we said motor down click 1 is stored in the gas storage capacitor down click 1 0 To fill the space inside the tank generated by the thermal decomposition of the waste tire by supplying it to the tube 12 or the tube 12 to the vacuum pump 13 Thus, the refrigerant circulating through the second to fourth heat exchangers 6, 7, 8 is returned to the gas storage tank 10 via the vacuum tank 14 and the vacuum pump 15. After being temporarily stored in the refrigerant storage tank 16, it is compressed by the refrigerant liquefaction compressor 17 and passes through the water tank 19 connected to the refrigerant liquefaction heat exchanger 18. It is intended to be supplied by

Here, when liquefying steam and van-forced heavy oil, it is sufficient to use a general refrigerant process because the temperature does not have to be lowered significantly. , Since the liquefaction temperature of the outlet pan gas at normal temperature and pressure is -42 C, the refrigerant circulating through the second to fourth heat exchangers 6 to 8 is evacuated from the refrigerant liquefaction compressor 17 to a vacuum It was made to pass through tank 14, vacuum pump 15 and refrigerant storage tank 16. The vacuum pressure of the gas passing through the fourth heat exchanger 8 by the vacuum pump 9 is 60 to 360 mmHg, and the liquefaction temperature of the propane gas under this pressure is about -7. 0 ° C or less.

Since the liquefaction temperature of this pronon gas is 170, the following temperatures cannot be made only by a general refrigerant liquefaction compressor 17, so the refrigerant is vacuum tank 14 and vacuum pump 1. When the pressure of the refrigerant is made lower than that of the gas to be liquefied by passing through the refrigerant tank 5 and the refrigerant storage tank 16, the vaporization temperature also becomes lower, so that it is generated when the waste tire is decomposed. So that it can liquefy the propane gas with a vacuum of 60 to 360 mmHg when the blown pan gas flows through the tubes of the propane liquefaction heat exchanger.

On the other hand, in the refrigerant liquefaction heat exchanger 18, a water-liquid unit 19, which is a refrigerant storage tank, is installed at a lower position, and gaseous refrigerant is injected into the water-liquid unit 19 to cool the refrigerant. The refrigerant in the water-liquid unit 19 is supplied to each of the heat exchangers 6 to 8 at the same time as the liquid is moved upward to the liquefaction heat exchanger 18.

Fig. 2 shows the configuration of the tank 1. The fuel gas pipe 21 has a manual valve 22 and an electronic valve 23 and a fuel gas pipe 21. The supply pipe 2 of the oxygen pipe 24 provided with the manual valve 25 and the electronic valve 26 is connected to a torch 27 installed at the lower part of the tank 1 and an upper end of the torch 27. It is ignited by the ignition device 28 formed in the section.

Then, an ash filter net 29 is installed above the torch 27, and the waste tire which is cut into an appropriate size on the support rod 30 and is stacked remains after being thermally decomposed. Make sure that the ash falls below the ash filter net 29.

An openable / closable bulkhead 32 is installed on the bottom of the tank 1 so that it can be selectively connected to the ash discharge section 3 at the lower end, and a vacuum state is maintained by a vacuum pump 4. An opening / closing valve 33 that can be opened and closed is also provided on the bottom surface of the ash discharge section 3 so that the ash that moves downward through the ash filter net 29 is properly discharged.

An oxygen removing torch 31 is installed on the upper part of the partition wall 32, and the tank is maintained in a state where the internal pressure is reduced to a low vacuum of 60 to 360 mm Hg by the vacuum pump 9. By combusting and removing the oxygen remaining inside 1, an explosion due to the combination of the residual oxygen and the gas generated by decomposition of the waste tire is prevented.

A lid 11 is provided on the upper surface of the tank 1 so that the waste material can be laminated inside, and the bottom surface of the lid 11 is formed by carbon dioxide injected from the outside. The expanding tube 12 is installed above the inside of tank 1 so that even if the amount of waste tires is reduced due to pyrolysis, the inside of tank 1 is reduced. By preventing the space from increasing, the load of the vacuum pump 9 for discharging gas generated from the inside is prevented from becoming unnecessarily large.

Then, a pressure gauge 36 is attached to the side wall of the tank 1 to which the safety valve 34 and the valve 35 are attached, and the valve 22 of the oxygen pipe and the valve 25 of the fuel pipe for combustion are operated. Then, the amount of gas decomposed and generated from the inside of the tank is adjusted to maintain the desired internal pressure of tank 1 at the desired low vacuum of 60 to 360 mm Hg. I was able to do it.

After opening the lid 11 of tank 1 and stacking the waste container inside using the support rod 30, operate the vacuum pump 9 to maintain the internal pressure at 260 mm Hg. To

Then, the oxygen removing torch 31 is ignited and ignited to burn and remove the oxygen inside.

Thereafter, the two manual valves 22 and 25 are operated to supply appropriate amounts of combustion gas and oxygen to the torch 27 via the fuel gas pipe 21 and the oxygen pipe 24 of the supply pipe 2. To be ignited by the ignition device 28.

Here, the worker can check the sparks on the sample tip 27a separately installed outside and adjust the opening and closing of the fuel gas pipe 21 and the oxygen pipe 24.

On the other hand, waste tires are thermally decomposed at temperatures above 600 at atmospheric pressure, but at temperatures of about 250 ° C under low vacuum pressure of 260 nrai Hg. Since it is disassembled, the vacuum pump 9 is operated to maintain the vacuum condition of 260 thigh Hg. This improves the energy efficiency and ensures that the flammable gas generated by pyrolysis can be continuously discharged to the outside, thus ensuring stability.

The ash generated from the pyrolysis of the waste tires, when collected on the partition wall 32 through the ash filter net 29 at the lower end, does not show how much ash has accumulated. In this state, the inside of the ash discharge section 3 was evacuated by the vacuum pump 4 and the partition 32 was opened by a switchgear (not shown). Ensure that the ash is transferred to the ash outlet 3.

Next, after the partition 32 is closed, the ash is discharged while the inside of the tank 1 is kept in a vacuum state by opening the on-off valve 33 at the lower end and discharging the outside to the outside. It is.

Fig. 3 shows an ignition device. A pipe 37 of a predetermined length is installed vertically at the end of a torch 27 connected to a plurality of supply pipes 2. Even if the inside of the tank 1 is in a low vacuum state, the sparks are directed upward without spreading laterally, and the current flowing through the igniter: the transformer 38 and the high-pressure transformer 39 Thus, the pressure is increased to 10 V, 1000 V to 15 V, 00 V, and supplied to the tungsten rods 41, 41a via the diode 40. It is designed to be ignited by the resistance heat of the cathode ray generated at the top of Fig. 7.

Therefore, the combustion gas supplied through torch 27 And oxygen are completely burned in the pipe 37, and the combustible gas generated by the thermal decomposition of the waste tires does not flow into the pipe 37, so that incompletely burned carbon monoxide (CO) is generated. It is capable of performing pyrolysis of waste tires without being generated.

4a to 4c show the configuration of the heat exchanger, and FIG. 4a shows the first heat exchanger 5, which is a hemispherical upper end portion 42 having a gas outlet 43 formed therein and a plurality of upper and lower portions. The main body 44 having a water inlet 46 and a water discharge port 47 formed at the upper and lower ends through which the gas transfer pipe 45 passes, and a hemispherical lower end 48 having a gas inlet 49 formed. The gas that has flowed in through the gas inlets 49 at the lower end 48 through the gas inlets 49 at the upper end 42 through a plurality of gas transfer pipes 45 by being connected in a hermetically sealed manner by a flange. While moving through 43, it was cooled by water at a constant temperature flowing through the water inlet 46 and flowing into the drain 47 through the inside of the main body 44.

Fig. 4b shows the second heat exchanger 6 and the third heat exchanger 7 (see Fig. 1) for cooling and liquefying the bunker heavy oil and steam, and the left side where the gas inlet 51 is formed. 50, a lower body 52 filled with a viewer liquid 54 inside a zigzag left and right gas transfer pipe 53 penetrated, and a plurality of irregularities located at the upper end of the lower body 52 Separated by a copper plate 56 provided with a part 57, an upper part 55 of the main body in which a refrigerant gas outlet 58 and a refrigerant liquid inlet 59 are formed A right side portion 60 having a gas outlet 61 and a liquid outlet 62 formed at an upper end and a lower end, and a valve installed at the liquid outlet 62 and getting on and off according to the accumulated liquid amount to open and close a passage. 6 3.

While the refrigerant in the liquid state flows into the refrigerant liquid inlet 59 of the upper body 55 and becomes a gaseous refrigerant and is discharged to the refrigerant gas discharge port 58, the lower part 52 of the main body divided by the copper plate 56 The heat of the view line liquid 54 is transferred and the gas flowing through the gas inlet 51 of the left side 50 in this state passes through the gas transfer pipe 53 formed in a zigzag manner. The heat exchange is performed by the BURAN liquid 54, and the liquefied bunker heavy oil or water collects in the right side 60, and the liquid collected in a certain amount moves the valve 63 upward and moves. The liquid was discharged to the outside through the opened liquid outlet 62.

FIG. 4c shows a fourth heat exchanger 8 for cooling and liquefying the pronon gas, which is a hemispherical left portion 64 having a gas inlet 65 formed therein and a plurality of gas transfer pipes 6 on the left and right. 7 with a coolant inlet 68 and a coolant outlet 69 on both sides of the upper part, and a right side 70 with a gas outlet 71 and a liquid outlet 72 formed at the upper and lower ends. The liquid outlet 72 is provided with a valve 73 for opening / closing the passage by getting on / off according to the amount of the accumulated liquid.

The liquid refrigerant flowing into the main body 66 through the refrigerant inlet 68 flows into the gas inlet 65 on the left side 64. Then, the heat of the gas flowing through the plurality of gas transfer pipes 67 is taken so as to be discharged as a gaseous refrigerant to the refrigerant discharge port 69, and the heat is removed in the process of passing through the gas transfer pipes 67. Of the collected gas, liquefied propane gas is collected at the right side 70 and then removed through the liquid outlet 72.

Most of the gas generated when the waste tire was decomposed was liquefied while passing through the heat exchanger, and the remaining gas was allowed to flow through the gas outlet 64.

In the gas extraction apparatus of the present invention thus constructed by pyrolyzing waste tires, first, the lid 11 is opened, and the waste tires are laminated inside the tank 1 using the support rods 30. Then close lid 1 1.

Here, when laminating round tires as they are, the volume of tank 1 increases and the thermal conductivity decreases, so the bottom and both sides of the waste tire are separated. Then, cut it into an appropriate length of about 30 cm and put it on the bottom of tank 1. Next, when the internal pressure of the tank 1 becomes about 260 thigh Hg by operating the vacuum pump, the torch 31 is ignited by the igniter 28 to ignite. In this way, the residual oxygen inside is completely removed, and at this time, the confirmation of oxygen removal is confirmed by checking the digestion state of the torch 31 through a transparent window (not shown) I do.

Then, the fuel gas pipe 2 1 of the supply pipe 2 and the manual valve 2 of the oxygen pipe 24 during the time when the ignition device 28 can ignite Open 2 and 25 so that the end of torch 27 will ignite the fuel gas and oxygen mixture traveling upward through pipe 35.

Here, at the time of combustion by the torch 27, the temperature of the waste tire portion in contact with the combustion heat generated from the torch 27 becomes about 250 ° C. When the internal pressure of the tank 1 becomes lower than 26 Omrn Hg when the vacuum pump 9 in the tank is operated, a certain amount of combustion gas is supplied through the manual valves 22 and 25. When the internal pressure becomes higher than 26 Oran Hg by supplying oxygen, the thermal power is reduced by reducing the supply of combustion gas and oxygen by adjusting the manual valves 22 and 25.

If it is attempted to extract pronon gas, the amount of oxygen is increased to maintain a high temperature per surface area of the spark under a low vacuum pressure of 110 tg Hg or less, and the size of the spark is increased. When the waste tire is pyrolyzed at a high spark temperature with a low temperature, the generated gas maintains a vacuum state of 110 awake Hg and combustion heat, and complete combustion is performed. Propane gas and other gasses of heavy fuel oil will not be contained.

Among the components of waste tires that are pyrolyzed, isoprene and butadiene are destroyed (dissociated) by heat and recombined, resulting in prono, ethylene, methane, acetylene, etc. Since it is recombined as a gas, any gas can be extracted using a cracking method that appropriately controls the temperature by pressure during pyrolysis. The gas discharged from the tank 1 by the vacuum pump 9 is cooled to a constant temperature in the first heat exchanger 5 using water, and again at the second heat exchanger 6 at −5 to about −10 ° C. When cooled, liquefied bunker heavy oil can be extracted.

When the third heat exchanger 7 for liquefying the steam again cools it to about -40 ° C to 150 ° C, steam synthesized from oxygen and hydrogen generated during combustion is liquefied and extracted. When the propane gas is cooled to about 80 ° C. at 170 ° C. in the fourth heat exchanger 8 for liquefying propane gas, the propylene gas is liquefied and extracted.

Their to, carbon dioxide (C 0 ₂₎ generated during the combustion is supplied from the stored through the vacuum pump 9 to the gas storage capacitor down click 1 0 to the tube 1 2 of lid 1 1 tubing By increasing the volume of 1 and 2, the phenomenon of increasing the space in the tank 1 by the amount of waste tires reduced by thermal decomposition is prevented.

In order to maintain the internal pressure of tank 1 with a large volume at 260 Hg, a vacuum pump with a large capacity is required, but the tank is removed by the waste tire 31 and the tube 12. If the internal volume of 1 is reduced, a smaller capacity vacuum pump 9 can be used.

After the pyrolysis of the waste tire, the fuel gas pipe 2

Stop the manual valve 2 2 of 1 and the manual valve 2 5 of the oxygen tube 2 4, and extract all the gas remaining in the tank 1. After that, all the other systems are stopped with the vacuum pump 9 running continuously, and the outside air inside the tank 1 gradually increases by slightly opening the valve 35 on the side wall. To be mixed with the flammable gas remaining inside and then discharged through the vacuum pump 9 ο

Then, when the operation of the vacuum pump 9 is stopped after a certain period of time in which the residual combustible gas is exhausted, when the outside air flows into the tank 1, the pressure becomes equal to the atmospheric pressure. Work will be terminated.

If the internal pressure suddenly rises to the extent of explosion due to instability of the internal combustion state during pyrolysis, safety valve 34 opens to lower the internal pressure by a certain value, thus reducing safety. Will have.

5 and 6 show a configuration of a tank according to another embodiment of the present invention, and show a tank for thermally decomposing a tire in which a metal wire is inserted into the tire.

A lid 76 is placed on the upper surface of the tank 74 on which the waste tire with the wire inserted is laminated on the upper surface of the support net 75 so as to be opened and closed.

An ash collecting section 78 and a wire collecting section 79 are separately formed at the lower end of the inside of the tank 74 provided with an opening / closing plate 77 on the front side by a partition wall 80 to enable separation and collection.

At the lower end of the ash collector 7 8, ash remains and only liquid The ash strainer net 81 that passes is installed, and the wire strainer net 82 is installed on it. When the waste tire stacked on the upper end of the support mesh 75 burns, the wire is wire strainer net. At 8 2, the ash passes through the ash strainer 8 1 before being collected at the ash collection section 7 8.

The electromagnet 83 positioned directly above the wire mesh 82 has the projecting portions 84, 84a at both ends inserted into the guides 85, 85a. , 85a are provided with springs 86, 86a, and the electromagnet 83 is bowed to one side of the tank 74.

The ends of the π-loops 89, 89 a pulled out from the roller 87 via a plurality of pulleys 88 are fixed to the projecting portions 84, 84 a of both ends of the electromagnet 83. The pulley 91, which is connected to the evening 90 and rotates with it, causes the electromagnet 83 to reach a position where it contacts the upper stopper 92 of the wire collection unit 79, which is the other side of the tank 74, by the pulley 91. To be able to move.

The waste tires stacked on the support net 75 are ignited by the heat generated from the heating wire 94 fixedly installed on one side of the fixed frame 93.

The projections 95, 95a on both sides of the fixing frame 93 are formed by springs 97, 97a while being inserted into guides 96, 96a installed parallel to both side surfaces. The hot wire 94 fixed to the fixed frame 93 according to the degree to which the protection frame 98 is thermally decomposed of the waste tire 97 so as to be drawn to one side. Are also subtracted by a fixed value to one side. The ends of the mouthpieces 101 and 10la which are pulled out from the mouth collar 99 through a plurality of pulleys 100 are fixed to the projecting portions 95 and 95a of both sides of the fixing frame 93. The fixed frame 93 can be moved to the end of the ash collection unit 78 by the pulley 103 connected to the motor 102 and rotating therewith.

Then, the internal gas of the tank 74 is discharged to a supply pipe by a vacuum pump (not shown) connected to one side wall of the tank 74 via a discharge pipe 104, and the heat is discharged. Cracking enables extraction of bunker heavy oil and hydrocarbon gas.

The other side wall of the tank 74 is provided with a valve 105 for changing the internal vacuum state to the atmospheric pressure state.

The operating state of the gas extraction device for pyrolysis of waste coal according to another embodiment of the present invention configured as described above will be described below with reference to the circuit diagram shown in FIG.

First, the manual switch SW1 is turned on, and the two solenoids SOLI and SOL2 are connected via the contacts P1 and P2 which are respectively turned on by the two relays R1 and R2. The solenoids S0L1 and S0L2 are used to supply power to the two motors 102 and 90, respectively, so that 1 is connected to the pulleys 100, 88, respectively, and the pulleys 103, 9 are driven by the rotational force of the motors 102, 90. 1 and pulleys 100, 8 8 rotate together with pulleys 100, 8 8 Ropes 101, 101 a. 89, 89 a.

Rope 1 0 1 wound through rollers 1 9 and 8 7

, 89a and 89a are guides 96, 96a, 85, 85a, respectively, and projecting portions 95, 95a, 84, 8

4 so that the fixed frame 93 with the inserted a and the electromagnet 83 are simultaneously moved to the other side of the tank Ί4, and the electromagnet 84 and the fixed frame 93 are in the correct positions. When it reaches, the limit switch SW 2 is turned on, the contact P in the connected state is turned off by the relay R, and the two relays R 1 and R 2 do not operate. To

Next, the lid 76 is opened, the waste tire in which the wire is inserted is laminated on the support net 75, and the lid 76 is closed.

The relay R 3, which is driven by the switch SW 3, turns on the contact P 4 by the vacuum pump mode 106, so that the power is supplied by the relay R 3. So that the internal pressure of the tank 70 becomes a low vacuum pressure state of about 260 Hg--9 o

Next, the switch SW4 is turned on so that the power is supplied to the heating wire 94 through the contact P4 which is turned on by the relay R4 so that the heating wire 94 is thermally decomposed. I do.

When the waste tire is thermally decomposed at a low temperature of about 250 ° C and the amount of waste waste decreases, the protrusions 95, 95 a on both sides are inserted into the guides 96, 96 a and fixed. Frame 9 3 is hot wire 9 4 Due to the restoring force of the springs 95 and 95a together with the protective frame 98 and the springs 95 and 95a, a certain value is drawn to one side.

Then, the electromagnet 83 is also pulled by the springs 86 and 86a to a position where it contacts the lower end protruding portion of the protective frame 98, and in this state, the contact switch is turned on. Turn on the switch SW5 so that the power is supplied to the electromagnet 83 through the contact 95, which is turned on by the relay R5.

At this time, wires that remain when the waste tire is thermally decomposed will be attached to the electromagnet 83. After a certain combustion time, a considerable amount of wire is attached to the electromagnet 83, and the relay R2 is operated by a timer indicating the elapse of the combustion time, and the relay R2 is operated. So that the power is supplied to the solenoids S0L2 and 90, and the pulley is rotated to the pulley 91, which rotates by the rotation of the motor 90. 8 8 are coupled so that the pulley 8 8 rotates with it.

While the ropes 89, 89a are wound as the pulley 88 rotates, the electromagnet 83 is moved to a position in contact with the stopper 92 on the other side, and the limit switch is moved. The switch P6 is turned on, and when the limit switch SW6 is turned on, the contact P6 that is turned off by the relay R6 is supplied to the electromagnet 83. The power supply to the electromagnet 83 is turned off so that the wire attached to the electromagnet 83 collects in the wire collection section 79, and the relay R7 turns off. Contact P7 interrupts the drive of relay R2, and the solenoid SOL2 and motor The power supplied to 90 is cut off, and the electromagnet 83 moves to one side of the tank 74 by the springs 86 and 86a provided inside the guides 85 and 85a. Then, the magnet formed at the lower end of the protective frame 98, the electromagnet 8 3 that has been moved to a position in contact with ° 9-3 1 is turned on, and the power limit switch SW 7 is turned on. Then, normal power is supplied to the electromagnet 83 by the relay R5.

Then, the work by the thermal decomposition is continued and the protection frame 98 comes into contact with one side of the tank 74, and the limit switch SW 8 formed on one side is opened. When the switch is turned on, the fixed frame 93 moves to the other side in the same manner as when the manual switch SW 1 is turned on, and the wire attached to the electromagnet 83 at the time when the timer operates is turned on. After the wire is collected at the wire collecting portion 79, the wire is brought into contact with the limit switch SW7 of the protection frame 98.

FIG. 8 shows still another embodiment of the present invention, and shows an apparatus for thermally decomposing a synthetic resin coated on a wire or the like, omitting the same parts as in FIG. Combustion gas and oxygen are supplied from the outside through tanks 110, 112, 113, 114 into tanks 110, each of which has a vertical perspective window 1 1 1 on the side. Torches 1 15, 1] 6, 1 17 are installed at predetermined intervals above and below, and the ignition and combustion conditions are controlled using the respective valves 118, 119, 120. Make adjustments selectively.

Therefore, a state in which the inside of the tank 110 is After stacking waste wires around the torches 1 1, 1 1, 1 1, 1 1 7 in sequence, the valve installed on the top supply pipe 1 1 2

1 1 8 is opened so that the waste wire piled up is thermally decomposed by the heat generated from the torch 1 1 5, and then the middle valve 1 1 9 is opened and the supply pipe 1 1 The torch of No. 3 After the heat generated from the torch 1 16 causes the waste wire accumulated in the middle part to be pyrolyzed, the bottom valve

By opening 120, the heat generated from the torch 1 17 of the supply pipe 114 causes the waste wires accumulated at the lower end to be thermally decomposed. Waste wire inside tank 110 is pyrolyzed from top to bottom. Industrial applicability

As described above, according to the gas extraction method and apparatus by pyrolysis of waste tires of the present invention, a desired low true air pressure state is created, the waste tire is pyrolyzed at a desired temperature, and the waste tire is decomposed. Of the tire components, isoprene and butadiene are destroyed (dissociated) by heat and recombined with any gas (pi-pan, ethylene, methane, acetylene, etc.). The desired gas can be obtained by using the cracking method under low vacuum pressure.

When the waste tire is thermally decomposed, the pyrolysis temperature is 600 or more under atmospheric pressure, but with the device of the present invention, the energy efficiency is reduced to about 250 ° C. And the heat inside the tank is reduced due to the low vacuum. Is used only for the thermal decomposition of waste tires without being conducted to the surroundings, and all heat at 250 ° C is used as latent heat of vaporization of gas, so the tank must be hot Ο safe to use ο

The pressure inside the tank is controlled by the operation of the vacuum pump and the amount of combustion gas (fuel and gas) injected into the tank, and the amount of flammable gas generated inside the tank is maintained. By forcibly discharging the gas to the outside, the internal safety is improved, and the gas is cooled and liquefied through a heat exchanger before passing through a vacuum pump, so that stable work is performed.

In addition, since the conventional incineration method is not used, and a thermal decomposition method using combustion heat or electric heat is used, no pollutant is generated due to synthesis and no dust is generated.

The volume of the vacuum pump that matches the internal area of the tank and the amount of oxygen and fuel gas injected during combustion are adjusted, and the tank pressure is arbitrarily created to set the thermal decomposition temperature point. By adjusting the pressure, the desired gas can be extracted. In addition, during the pyrolysis, if the inside of the tank is preheated, even if the supply of combustion gas is interrupted, the gas generated from the inside and oxygen are combined to perform the thermal decomposition, so the fuel consumption is low. It has the advantage that the pyrolysis work can be continued.

The present invention is not limited to the above-described pyrolysis of waste tires, but also heats various industrial wastes such as waste electric wires, coated paper and other industrial wastes such as waste electronic components within the spirit and scope of the present invention. Of course, it can be applied to decomposition.

Claims

(1) Hydrocarbon gas and oxygen are supplied through a fuel gas pipe (21) and an oxygen pipe (24) provided with a manual valve (22) (25) and an electronic valve (23) (26), respectively. Supply pipe (2) to supply

A vacuum is maintained by a vacuum pump (4) connected to the bottom of the tank (1) through a partition (32), and an on-off valve (33) is formed at the lower end to remove ash. Ash discharge section (3) to be discharged,

A first heat exchanger (5), which is connected to the tank (1) via a discharge pipe (9a) and uses water, a second heat exchanger (6) for liquefying the banker heavy oil, The gas is discharged through a third heat exchanger (7) for liquefying steam and a fourth heat exchanger (8) for liquefying hydrocarbons so that the gas is discharged from the tank (1). A vacuum pump (9) for maintaining the vacuum

The carbon dioxide passing through the vacuum pump (9) is supplied to a tube (12) formed in a lid (11) of the tank (1) or a vacuum pump (13). The gas storage tank (10) to be recovered by the heat exchanger and the refrigerant circulating through the second to fourth heat exchangers (6), (7), (8) are vacuum tanks (14). The pressure is reduced by a vacuum pump (15) and a refrigerant storage tank (16), and then compressed and connected to a refrigerant liquefaction heat exchanger (18). And a refrigerant liquefaction compressor (17) adapted to be supplied in liquid form through a water tank (19).

(2) In claim 1,

The tank (1) is connected to a fuel gas pipe (21) and an oxygen pipe (24) provided with a manual valve (22) (25) and an electronic valve (23) (26), respectively. The supply pipe (2) is connected to a plurality of torches (27) each having a predetermined length of pipe (37) inserted vertically and an external sample torch (27a). At the upper end of the torch (27), which is ignited and ignited by (28), an ash filter net (29) and a support rod (30) are sequentially installed, and the openable and closable partition (32) is provided. A torch (31) for removing oxygen is installed at the upper part so as to be ignited by an ignition device (28), and an openable and closable partition (32) is installed at the lower end. A lid (11) formed with a tube (12) is installed on the upper surface of the tank (1) so as to be openable and closable, and a safety valve (34) is provided on the side of the tank (1). Installation Te configured in earthenware pots by being opened when elevated pressure internal this and the gas extraction device by pyrolysis of scrap tires characterized by.

(3) In claim 1,

The second and third heat exchangers (6) (7)

The left side (50) where the gas inlet (51) is formed and the left and right zigzag type gas transfer pipe (53) are penetrated. A copper plate (52) having a lower portion (52) filled with a viewer solution (54) and a plurality of uneven portions (57) located at the upper end of the lower portion (52). The upper part (55) of the main body, which is separated by the refrigerant gas outlet (58) and the refrigerant liquid inlet (59), is separated by the gas outlet (61) and the liquid outlet (62 ) Are formed at the upper and lower ends of the right side (60) and a valve (63) installed at the liquid outlet (62) for getting on and off according to the amount of accumulated liquid to open and close the passage. A gas extraction device by pyrolysis of waste tires.

(4) In claim 1,

The tank (74) is separated by a bulkhead (80) into an ash collection section (78) and a wire collection section (79), and is located above the ash collection section (78). The electromagnet (83) installed at the upper end of the wire strainer (82,) is made to reciprocate between the springs (86, 86a), and the support net (

The heating wire (94) installed at the upper end of the

8) is fixed together with the fixed frame (93) so as to move together, and the fixed frame (93) is provided with the springs (97) and (97 a). The thermal decomposition of waste tires, characterized in that they are configured to reciprocate above the support net (75) while being inserted into the guides (96) (96a). Gas extraction device. (5) In claim 1,

The tank (1 1 1) with a vertical see-through window (1 1) To the combustion gas through the supply pipes (1 1 2) (1 1 3) (1 1 4) provided with the valves (1 1 1 8) (1 1 9) (1 2 0) A gas extraction device by pyrolysis of waste tires, characterized in that torches (1 15) (1 16) (1 17) receiving oxygen supply are installed at predetermined intervals above and below.

(6) Opening the lid of the gas extraction device according to claim 1, and stacking the waste tire on the upper end of the support rod;

Activating the vacuum pump to maintain the tank internal pressure at around 260 flimHg;

Igniting an oxygen removal torch to burn and remove residual oxygen inside;

Supplying gas and oxygen and igniting and igniting to perform a cracking method so as to be thermally decomposed under a heat of combustion of about 250 ° C and a low pressure of 260 mmHg;

Allowing the gas discharged to the outside by the vacuum pump to be somewhat cooled in the first heat exchanger using water; and

A step of obtaining a van-forced heavy oil while being cooled to about -5 to -10 in a second heat exchanger using a refrigerant;

Obtaining water in the course of being cooled to about −40 ° C. to about 150 ° C. in a third heat exchanger using a refrigerant;

Liquefied propane gas is obtained in the course of being cooled to approximately--δ 0 ° C at 170 by a fourth heat exchanger using a refrigerant, and carbon dioxide is discharged. Gas extraction method by thermal decomposition of waste tires.

(7) In claim 6,

In performing the cracking process, the pressure inside the tank should be maintained at 11 O mmHg or more, and the fuel should be increased so that the amount of oxygen becomes larger than the amount of fuel gas. Propane gas and bunker fuel oil by adjusting the gas pipe valve and oxygen pipe valve to generate high temperature per surface area from small sparks to pyrolyze waste tires Gas extraction method by pyrolysis of waste tires to extract water.