WO2010041817A2

WO2010041817A2 - Waste tire recycling system

Info

Publication number: WO2010041817A2
Application number: PCT/KR2009/004839
Authority: WO
Inventors: 전영민
Original assignee: Jeon Yeong Min
Priority date: 2008-10-08
Filing date: 2009-08-28
Publication date: 2010-04-15
Also published as: CA2739816A1; KR100937214B1; JP2012505286A; MX2011003771A; IL212145A0; BRPI0914058A2; CN102176982A; PE20120096A1; CL2011000745A1; WO2010041817A3; CA2739816C; US20110303525A1

Abstract

Disclosed is a waste tire recycling system. More particularly, the present invention relates to a waste tire recycling system having a pyrolysis furnace in which waste tires injected are recycled with a carrier gas and decomposed by a direct heating method, an oil-collecting means for cooling and condensing hot steam generated from the pyrolysis furnace and collecting oil, and a carrier gas recycling line through which a carrier gas is recycled back into the pyrolysis furnace via the pyrolysis furnace and the oil collecting means, the waste tire recycling system comprising a carrier gas feeder connected to one end of the carrier gas recycling line to selectively feed a carrier gas by controlling a valve, the carrier gas feeder having a filling element filled with a carrier gas containing at least one of methane, ethane, propane, butane, pentane, hexane and ammonia group components in a mixed form.

Description

Waste Tire Recycling System

The present invention relates to a waste tire recycling system in which waste tires, which are industrial wastes, are thermally decomposed by a heating method using a carrier gas to separate and extract and recycle various energy sources. The present invention relates to a waste tire recycling system for supplying gas carrier gas to improve the convenience of operation.

Recently, as the spread of vehicles accelerates, the demand for tires increases, and the amount of waste tires increases accordingly.

As is well known, the waste tire is mainly a synthetic polymer compound, and the calorific value is about 34 MJ / kg, which is higher than the reference calorific value of coal of 29 MJ / kg. In addition, the average composition of tire pieces is 43.5 wt% of SBR polymer (styrene-butadiene copolymer), 32.6 wt% of carbon black, 21.7 wt% of oil, 2.2 wt% of additives such as sulfur and zinc oxide, except for fabrics such as iron core and nylon. %to be.

When the waste tires are burned, environmental pollutants such as sulfur oxides, unburned hydrocarbons, and soot are highly generated. Therefore, the Ministry of Environment prohibits the use of fuel as fuel.

As a result, the use of waste tires in addition to combustion is being studied, and recycling products such as sidewalk blocks, recycled tires, recycled rubber, artificial reefs, and buffers for various structures are being commercialized, but their application scope is limited. Waste and pollution occur in the molding process for the products, as well as environmental pollution caused by the waste when these products are disposed of.

On the other hand, a method for fuelization is being attempted without recycling the waste tires, and a thermal cracking furnace for thermally decomposing waste tires is used for fueling the waste tires, and according to the heating method of the thermal cracking furnace directly It is divided into heating type and indirect heating type.

Here, the direct heating pyrolysis furnace has a risk of explosion due to chemical reaction with the flame generated when heat is applied to the waste tire and oxygen contained in the air in the heating furnace. As the free carbon is contained, there is a problem that the quality of the extracted oil is degraded.

In addition, the indirect heating type has no risk of explosion compared to the direct heating type described above, but because of the low thermal efficiency, most of the oil obtained as a by-product must be used as a fuel. There was a difficulty.

In order to solve the above problems, the applicant has been registered for the recycling system of waste tires through the Republic of Korea Patent Registration No. 10-0628890.

The applicant's application for waste tire recycling system includes: thermal decomposition means for thermally decomposing the injected waste tire in a pyrolysis furnace by direct heating using carbon dioxide (CO 2) or nitrogen (N 2) as a carrier gas; Carbon treatment means for pulverizing the decomposition residue separated by thermal decomposition in the pyrolysis furnace to separate carbon and iron core; Oil collecting means for separating the oil component by cooling and condensing the exhaust gas separated by thermal decomposition in the pyrolysis furnace; Carbon treatment means for producing high-pressure steam using high-temperature exhaust gas generated by incineration of the carbon separated by the carbon treatment means, and then operating steam turbines and absorption chillers to produce electricity and cold water; The exhaust gas treatment means used for cleaning the exhaust gas discharged by the carbon treatment means to discharge the pollution-free gas, and the exhaust gas treatment means for separating and recovering a part of CO2 or N2.

The waste tire recycling system having such a configuration enables the extraction of high purity oil containing no water and free carbon while preventing the decomposition of the pyrolysis furnace by using a pyrolysis furnace of a direct heating method using a carrier gas.

However, the pre-applied waste tire recycling system thermally decomposes by direct heating, but uses additional carbon dioxide (CO2) or nitrogen (N2) as a carrier gas. In addition to the need for additional equipment to supplement these carbon dioxide (CO2) or nitrogen (N2) gas from time to time, this not only adds to the cost of initial capital investment, but also increases the cost of these carbon dioxide (CO2) or nitrogen (N2) There has been a disadvantage in that space is secured according to installation of devices and facilities for supplying gas.

In particular, the carrier gas consisting of carbon dioxide (CO2) or nitrogen (N2), the applicant of the present application is included in the oxygen by the air (oxygen) is introduced when the waste tire is introduced into the pyrolysis furnace during the initial operation of the system. In order to reduce the quality of the extracted oil, the oxygen requires a process of continuously supplying the carrier gas to exhaust the oxygen. Since the oxygen exhaust process consumes a considerable amount of carrier gas over a long period of time, the economic efficiency is greatly reduced, and the time required for the normal operation of the system is long, resulting in a poor operation efficiency.

In order to solve such a disadvantage, the applicant has applied for an improved waste tire recycling system through Korean Patent Application No. 10-2008-93763.

The waste tire recycling system, which is filed by the applicant, is a thermal decomposition furnace which circulates the used waste tires as a carrier gas and decomposes them by a direct heating method, and an oil that collects oil by cooling and condensing high-temperature steam generated in the thermal decomposition furnace. In the waste tire recycling system comprising a collecting means,

And a carrier gas circulation line circulated back to the pyrolysis furnace via the pyrolysis furnace and the oil collecting means, and connected to the carrier gas circulation line, the temperature in the pyrolysis furnace and the pressure in the carrier gas circulation line. It comprises a sensing element for measuring the, and collects and stores the non-condensable gas generated in the pyrolysis furnace, and selectively supply it to the pyrolysis furnace side to use as a carrier gas circulation supply device .

The conventional waste tire recycling system configured as described above can be economically operated because it does not require the supply of a separate carrier gas by utilizing the non-condensable gas generated in the combustion process of the waste tire as a carrier gas.

However, the waste tire recycling system, which was previously filed by the applicant, had to be transported and supplied separately from the non-condensable gas generated in the other system at the time of initial operation, thereby causing inconvenience and inefficiency. .

Accordingly, an object of the present invention is to provide a carrier gas of various components from the outside to ensure the convenience of the initial operation of the system, and also to use a carrier gas during use of the non-condensable gas generated during the combustion of waste tires as a carrier gas. If the gas supply is unstable, it is possible to provide an alternative supply to provide a waste tire recycling system that can increase the operating reliability of the system.

According to the present invention, a thermal decomposition furnace which circulates the used waste tires as a carrier gas and decomposes them by a direct heating method, and oil collecting means for capturing oil by cooling and condensing high-temperature steam generated in the thermal decomposition furnace and thermal decomposition A waste tire recycling system comprising a carrier gas circulation line circulated back to a pyrolysis furnace via a furnace and an oil collecting means, the carrier tire recycling line being connected to one end of the carrier gas circulation line and selectively supplying carrier gas by valve control. And a carrier gas supply device having a charging element filled with a carrier gas obtained by mixing at least one or more components of methane, ethane, propane, butane, pentane, hexane, and ammonia series. do.

As a preferred feature of the invention, the carrier gas tank connected to the carrier gas circulation line and the carrier gas filled therein; An oxygen detector for detecting oxygen present in the carrier gas circulation line; It is connected to the oxygen detector is selectively operated by receiving the sensing information is installed on the carrier gas circulation line is configured to include an oxygen combustor for burning and removing the oxygen present in the carrier gas circulation line.

In another preferred embodiment of the present invention, the non-condensable gas generated in the pyrolysis furnace includes a sensing element that is connected to the carrier gas circulation line and measures a temperature in the pyrolysis furnace and a pressure in the carrier gas circulation line. It is to be configured to further include a carrier gas circulation supply device for collecting and storing, optionally supplying it to the pyrolysis furnace side to use as a carrier gas.

As another preferred feature of the present invention, the carrier gas circulation supply device is connected to the carrier gas supply device and is selectively piped to receive the carrier gas and supply the carrier gas circulation line.

According to another preferred aspect of the present invention, the carrier gas circulation supply device includes a pressure measuring device for measuring an internal pressure of the carrier gas circulation line as a sensing element and a temperature measuring device for measuring a temperature in the pyrolysis furnace.

In another preferred aspect of the present invention, the carrier gas circulation supply device is connected to the carrier gas circulation line, a non-condensable gas storage tank for selectively receiving and storing a non-condensable gas, the non-condensable gas storage tank and the An intermittent valve installed in a conduit connecting the carrier gas circulation line to selectively supply the non-condensable gas in the carrier gas circulation line to the non-condensable gas storage tank or vice versa to supply the stored non-condensable gas to the carrier gas circulation line It is to be configured.

In another preferred aspect of the present invention, the carrier gas circulation supply device is non-condensing in the carrier gas circulation line when the pressure in the carrier gas circulation line is 100 mmAq or more and the decomposition temperature in the thermal cracking furnace is 200 ° C. or more. Storage of stored gas in a non-condensable gas storage tank.

In another preferred aspect of the present invention, the carrier gas circulation line is provided with an oxygen combustor having a heating wire that generates heat selectively by a power supply to combust oxygen contained in the gas.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be interpreted in the ordinary and dictionary sense, and the inventors may appropriately define the concept of terms in order to best explain the invention of their own. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Through the present invention, it is possible to supply the carrier gas of the various components during the initial operation of the system has the advantage that can improve the work convenience at startup.

In addition, in a system using non-condensable gas generated during combustion of waste tires as a carrier gas, when the generation of non-condensable gas is not smooth or the quality of the produced non-condensable gas is sharply degraded, methane, ethane, propane, butane · Carrier gas made of pentane, hexane, ammonia, etc. can be continuously supplied to increase the stability and reliability of the system operation.

1 is a schematic diagram showing a schematic configuration of a waste tire recycling system according to the prior art,

2 is a schematic diagram showing a schematic configuration of a waste tire recycling system according to the present invention;

3 is a schematic diagram showing another embodiment of FIG.

4 is a block diagram showing the waste tire recycling system of FIG.

1: pyrolysis furnace 2: grinder

3: chain conveyor 4: carbon storage tank

5: iron core reservoir 6: condenser

7: oil tank 8: cyclone

9: 3rd separation tank 10: carbon incinerator

11: primary heat exchanger 12: secondary heat exchanger

13 steam turbine 14 absorption chiller

15: high pressure pump 16: washing tower

17 gas separation unit 18 gas circulation blower

20: carrier gas circulation supply device 50: carrier gas supply device

The objects, features and advantages of the present invention described above will become more apparent from the following detailed description.

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

First, it should be noted that like elements or parts in the drawings are denoted by the same reference numerals as much as possible. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted in order not to obscure the subject matter of the present invention.

2 is a schematic diagram showing a schematic configuration of a waste tire recycling system according to the present invention.

First, the sign description of the main elements of the present invention.

Reference numeral 1 denotes a pyrolysis furnace 1, which is an element that thermally decomposes by direct heating using a gas such as carbon dioxide (CO2) or nitrogen (N2) as a carrier gas, and such a pyrolysis furnace (1) is the upper one side. An inlet for injecting waste tires is provided at one side thereof, and at one side thereof, an outlet for circulating high-temperature steam generated by pyrolysis and an air outlet for discharging air during initial operation are provided, and at the lower portion, pyrolyzed decomposition residues are discharged. A discharge port is provided.

Reference numeral 2 is a crusher provided under the discharge port of the pyrolysis furnace 1 to pulverize pyrolysis residues, 3 is a chain conveyor separating pulverized carbon and iron core, and 4 is the chain. A carbon storage path 4 and an iron core storage path 5 for storing carbon and iron core separated from the conveyor 3, respectively.

Reference numeral 6 denotes a condenser for cooling and condensing high temperature steam discharged through the outlet of the pyrolysis furnace 1, reference numeral 7 denotes an oil tank for collecting oil separated in the course of cooling condensation. 8) is a cyclone that collects oil components that move like gas together with the carrier gas without being collected during the cooling condensation process.

In addition, reference numeral 9 denotes a tertiary separation tank for recovering (capturing) the oil mist not collected in the cyclone 8 by directly contacting the liquid oil in aeration manner.

Reference numeral 10 denotes a carbon incinerator in which carbon stored in the carbon storage tank 4 is transported and incinerated by self-heating, and reference numeral 11 receives the high temperature exhaust gas generated in the carbon incinerator 10 and cools it. A primary heat exchanger for heating the carrier gas to a high temperature and then supplying a high temperature carrier gas to the pyrolysis furnace (1), and the reference numeral (12) uses exhaust gas that has passed through the primary heat exchanger (11). Secondary heat exchanger for making a high pressure steam, and 13 is a steam turbine for producing electricity using high pressure steam.

Reference numeral 14 is a refrigerator for supplying low pressure steam (about 5 Kg / cm2) discharged from the steam turbine 13 to produce cold water and condensation, and reference numeral 15 denotes the secondary heat exchanger by pumping condensed water. It refers to a high pressure pump circulated to (12).

Reference numeral 16 denotes a washing tower for washing exhaust gas discharged from the secondary heat exchanger 12, and reference numeral 18 denotes a blower.

On the other hand, Figure 3 is a schematic diagram showing another embodiment of Figure 2, Figure 4 is a block diagram showing the waste tire recycling system of Figure 3, as shown therein, this embodiment is the embodiment of FIG. Carrier gas circulation supply device 20 is installed to collect the non-condensable gas that is naturally generated during the combustion process of the waste tire and to circulate and supply it to the carrier gas.

The carrier gas circulation supply device 20 according to the present embodiment improves the economics and the yield of the extracted oil by using the gas component naturally generated in the combustion process of the waste tire as the carrier gas.

Hereinafter, the operation of each element will be described with reference to a system for circulating and using the non-condensable gas of FIGS. 3 and 4 as a carrier gas.

The pyrolysis furnace 1 is an element for thermally decomposing waste tires by direct heating using non-condensable gas through a carrier gas circulation supply device 20 which will be described later, and using it as a carrier gas. An outlet for discharging pyrolyzed residues is provided, and an outlet for discharging high-temperature steam due to thermal decomposition. In this pyrolysis furnace 1, the air inside thereof is discharged to the outside by the injection of a carrier gas, and the non-condensable gas generated in the combustion process of the waste tire is circulated by opening the circulation outlet in a state where the air discharge is completed. In this case, the circulation path of the non-condensable gas corresponds to (cl) in the figure. That is, the heating steam generated in the combustion process of the waste tire introduced into the pyrolysis furnace 1 is blower 18 and the primary heat exchange via the condenser 6, the cyclone 8 and the tertiary separation tank 9. It is circulated to the pyrolysis furnace 1 via the group 11.

The pyrolysis residue treatment means consists of a pair of rollers in which a pulverizer (2) for pulverizing the residue put between them and a chain conveyor (3) and a chain conveyor (3) for separating the pulverized carbon and iron cores during conveyor movement. It consists of a carbon storage path 4 and an iron core storage path 5 for storing the separated carbon and iron core, respectively.

The oil collecting means is an element that separates and extracts oil from the high-temperature steam generated in the pyrolysis furnace 1, and is primarily separated by the condenser 6 for cooling and condensing the high-temperature steam and the cooling condensation of the condenser 6. Oil tank (7) storing the stored oil and the cyclone (8) and the cyclone (8) which collects the secondary gaseous components of the gaseous state in a strong vortex and transfers them to the oil tank (7). It consists of a tertiary separation tank 9 which collects and collects the oil powder by directly contacting the liquid oil in an aerated manner.

The carbon treatment means incinerates the carbon supplied from the carbon storage tank 4 to produce a high temperature exhaust gas, a carbon incinerator 10 and a first and

second heat exchangers

11 and 12 that heat the exhaust gas at a high temperature, and a second heat exchanger. Steam turbine 13 for generating electricity by receiving the high pressure steam produced in the machine and the absorption type refrigeration unit 14 for generating condensate by receiving steam of low pressure and high pressure pump circulating the condensate to the secondary heat exchanger 12 ( 15).

The carrier gas circulation supply device 20 is connected to the carrier gas circulation line cl. Here, the carrier gas circulation line cl refers to a path circulated back to the pyrolysis furnace 1 via the pyrolysis furnace 1 and the oil collecting means. The carrier gas circulation supply device 20 installed in the carrier gas circulation line cl has a sensing element for measuring the temperature in the pyrolysis furnace 1 and the pressure in the carrier gas circulation line cl. The non-condensable gas produced in the pyrolysis furnace 1 is collected and stored, and then it is selectively circulated and supplied to the pyrolysis furnace 1 side.

On the other hand, the carrier gas circulation supply device 20 is a sensing element, a pressure gauge 21 for measuring the internal pressure of the carrier gas circulation line (cl), and a temperature for measuring the temperature in the thermal decomposition furnace (1) The measuring device 23 is configured to include the pressure measuring device 21 and the temperature measuring device 23 may be implemented by a known mechanical or electronic sensor, and thus a detailed description thereof will be omitted.

In addition, the carrier gas circulation supply device 20 is connected to the carrier gas circulation line (cl) and the non-condensable gas storage tank 27 for selectively receiving and storing the non-condensable gas and the non-condensable gas storage tank 27 ) Is installed in a conduit connecting the carrier gas circulation line (cl) to selectively supply and store the non-condensable gas to the non-condensable gas storage tank 27 or the non-condensed gas stored in the non-condensable gas storage tank 27 It is configured to include an intermittent valve (25, 29) that can be supplied to the pyrolysis furnace (1) by transferring the layering gas to the carrier gas circulation line (cl).

On the other hand, in the present invention, the pressure measuring device (21) installed in the carrier gas circulation line (cl) to measure the internal pressure of the temperature measuring device 23 for measuring the temperature in the thermal decomposition furnace (1) while the set value is 100mmAq or more. ) Is measured at a set value of 200 ° C. or higher, it is determined that the non-condensable gas is generated in the pyrolysis furnace 1, and the intermittent valve 25 of FIG. 3 is opened in the

intermittent valves

25 and 29. The carrier gas circulation line cl and the non-condensable gas storage tank 27 are connected to each other, and a compressor (unsigned) of one side thereof is operated to draw the non-condensable gas flowing inside the carrier gas circulation line cl. It can be supplied and stored in the non-condensable gas storage tank (27). On the contrary, when the pressure measuring device 21 and the temperature measuring device 23 are lower than the set value, the control valve corresponding to the reference sign 25 is turned off, and the control valve corresponding to the reference sign 29 is opened to open the non-condensable gas. The non-condensable gas stored in the storage tank 27 is transferred to the carrier gas circulation line cl to be supplied to the pyrolysis furnace 1.

Such a configuration is similar to the configuration of the applicant's previous application waste tire recycling system.

However, the present invention provides a carrier gas circulation line comprising a carrier gas composed of a gas obtained by mixing at least one or more components of methane, ethane, propane, butane, pentane, hexane, and ammonia series at the initial startup of the system, as shown in FIG. When the carrier gas supply device 50 for supplying to (cl) is constituted or when the non-condensable gas is stably produced in a system using non-condensable gas as the carrier gas as shown in FIGS. The technical feature is to provide a carrier gas supply device 50 used as an auxiliary supply source of carrier gas.

That is, the carrier gas supply device 50 of the present invention is connected to the carrier gas circulation line (cl) through which the carrier gas is circulated and the carrier gas tank 51 filled with the carrier gas therein, and the carrier gas circulation line (cl) is connected to the oxygen detector 52 and the oxygen detector 52 for detecting the oxygen present in the sensing information, and based on the applied sensing information selectively in the carrier gas circulation line (cl) It consists of the oxygen combustor 30 removed by combustion.

Here, the carrier gas supply device 50 is connected to the carrier gas circulation line (cl) directly as shown in Figure 2 is applied to a system for supplying a carrier gas, or in Figures 3 and 4 As shown, it can be applied to a system equipped with a carrier gas supply device 50 for circulating and using the non-condensable gas generated during the combustion of waste tires as carrier gas.

As shown in FIG. 2, when the carrier gas supply device 50 is directly piped to the carrier gas circulation line cl to supply carrier gas, the carrier gas circulation supply device 20 and the carrier gas circulation line ( The piping connecting cl) may be configured to be interrupted by a valve interruption. Since the configuration by the valve control can be carried out in various ways by known techniques, detailed description thereof will be omitted.

3 and 4, when the carrier gas supply device 50 is connected to the carrier gas circulation supply device 50 without being directly piped to the carrier gas circulation line cl, the carrier gas circulation is performed. Among the elements constituting the supply device 20, the carrier gas supplied from the carrier gas supply device 50 in the state in which the non-condensable gas remaining in the non-condensable gas storage tank 27 storing the non-condensable gas is exhausted. It is preferable to be configured to be supplied to the carrier gas circulation line (cl), which is also flow can be easily carried out by a variety of known techniques will be omitted.

Hereinafter, a configuration of the carrier gas supply device 50 directly connected to the carrier gas circulation line cl or connected to the carrier gas circulation supply device 20 will be described.

The carrier gas tank 51 is filled with a gas obtained by mixing at least one or more components of methane, ethane, propane, butane, pentane, hexane and ammonia series.

The carrier gas tank 51 may be configured to inject gas of methane, ethane, propane, butane, pentane, hexane, ammonia series from the outside, or may be configured to replace the tank itself, and the carrier gas circulation line ( It is preferred to be piped so that it can be easily separated or connected from cl).

Oxygen detector 52 is installed in the carrier gas circulation line (cl) to measure the concentration of oxygen contained in the flowing carrier gas, oxygen oxygen in the carrier gas is detected by detecting the oxygen combustor 30 to be described later Apply sensing information with. The oxygen detector 52 may be installed at equal intervals in the carrier gas circulation line cl to increase the reliability of detection.

The oxygen combustor 30 is installed in the carrier gas circulation line cl to remove oxygen in the carrier gas by combustion. When the oxygen combustor 30 receives oxygen sensing information from the oxygen detector 52, the oxygen combustor 30 is provided with a heating wire that generates heat by receiving power from the outside, and burns oxygen in the carrier gas using the heating wire. . On the other hand, the oxygen combustor 30 in the present invention has been described an example having a heating wire as an embodiment, but not limited to the heating wire is a structural that can burn the oxygen in the carrier gas circulation line (cl) by combustion If it has a feature, it may be modified by various known techniques.

Referring to the operation of the waste tire recycling system of the present invention configured as described above are as follows.

Hydrocarbon gas consisting of methane, ethane, propane, butane, pentane and hexane series has a larger heat capacity than nitrogen or carbon dioxide, so when the same amount of gas is sent through a blower, the hydrocarbon gas (methane, ethane, propane, butane, pentane) Hexane-based) can transfer more heat. Therefore, it is possible to decompose waste tires in the pyrolysis furnace more quickly, so that more waste tires can be treated than using nitrogen or carbon dioxide in the same capacity of the pyrolysis furnace.

Table 1 below shows the transfer heat of hydrocarbon gas (methane, ethane, propane, butane, pentane, hexane series), nitrogen gas and carbon dioxide.

TABLE 1

According to the above [Table 1], if butane-based gas is used as a carrier gas, since the decomposition rate is about 2.5 times faster than when nitrogen is used, about 2.5 times of waste tires can be treated in the same size reactor. It is possible to increase the processing capacity without physically expanding the system.

On the other hand, in the presence of oxygen in the carrier gas circulation line (cl), when the temperature of the waste tire is 250 ℃ or more, oxygen is first reacted with the rubber of the waste tire to generate free carbon (C) and water to product oil By mixing with, the quality is not only degraded but also the yield is greatly reduced. On the other hand, when the hydrocarbon gas is used as a carrier gas, oxygen present in the system can be removed by reacting with the hydrocarbon gas in the high temperature primary heat exchanger before the temperature of the waste tire rises to 250 ° C.

The present invention is not limited to the described embodiments, and it is possible to use the application by changing the site, and various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have. Therefore, such modifications or variations will have to belong to the claims of the present invention.

Claims

Pyrolysis furnace that uses recycled spent tire as carrier gas and decomposes by direct heating method, and oil collecting means for collecting oil by cooling and condensing high-temperature steam generated from this pyrolysis furnace, and pyrolysis furnace and oil collecting means In the waste tire recycling system comprising a carrier gas circulation line circulated back to the pyrolysis furnace via

At least one or more components of methane, ethane, propane, butane, pentane, hexane, and ammonia-based components are selectively connected to one end of the carrier gas circulation line (cl) to supply the carrier gas by the control of the valve 53. A waste tire recycling system, characterized in that it further comprises a carrier gas supply device (50) having a filling element filled with the carrier gas mixed.
The method of claim 1, wherein the carrier gas supply device 50,

A carrier gas tank 51 connected to the carrier gas circulation line cl and filled with a carrier gas therein;

An oxygen detector (52) for detecting oxygen present in the carrier gas circulation line (cl);

An oxygen combustor connected to the oxygen detector 52 and selectively operated by receiving sensing information and installed on the carrier gas circulation line cl to burn and remove oxygen existing in the carrier gas circulation line cl; 30);

Waste tire recycling system, characterized in that comprises a.
According to claim 1, It is connected to the carrier gas circulation line (cl) is provided with a sensing element for measuring the temperature in the thermal decomposition furnace (1) and the pressure in the carrier gas circulation line (cl), the thermal decomposition And a carrier gas circulation supply device 20 for collecting and storing the non-condensable gas generated in the furnace 1 and selectively supplying the non-condensable gas to the pyrolysis furnace 1 to be used as a carrier gas. Waste tire recycling system.
According to claim 3, The carrier gas circulation supply device 20 is connected to the carrier gas supply device 50 is selectively piped to receive the carrier gas to supply to the carrier gas circulation line (cl) Waste tire recycling system.
4. The carrier gas circulation supply device 20 according to claim 3, wherein the carrier gas circulation supply device 20 measures a temperature in the pyrolysis furnace 1 and a pressure gauge 21 for measuring the internal pressure of the carrier gas circulation line cl as a sensing element. Waste tire recycling system characterized in that it comprises a temperature measuring instrument (23).
According to claim 3, The carrier gas circulation supply device 20,

A non-condensable gas storage tank 27 connected to the carrier gas circulation line cl to selectively receive and store a non-condensable gas;

Installed in a conduit connecting the non-condensable gas storage tank 27 and the carrier gas circulation line cl to selectively supply non-condensable gas in the carrier gas circulation line cl to the non-condensable gas storage tank 27. Intermittent valves 25 and 29 for supplying the stored non-condensable gas to the carrier gas circulation line cl;

Waste tire recycling system, characterized in that comprises a.
According to claim 3, The carrier gas circulation supply device 20,

When the pressure in the carrier gas circulation line (cl) is 100mmAq or more and the decomposition temperature in the thermal cracking furnace (1) is 200 ° C or more, the non-condensable gas flowing in the carrier gas circulation line (cl) is a non-condensable gas storage tank. The waste tire recycling system characterized by the above-mentioned.
The waste gas according to claim 1, wherein the carrier gas circulation line (cl) is provided with an oxygen combustor (30) having a heating wire that generates heat selectively by a power supply to burn oxygen contained in the gas. Tire recycling system.