KR102355504B1 - A safety apparatus when excess gas is generated in a thermal pyrolysis facility of waste synthetic resins - Google Patents

Abstract

The present invention relates to a safety device at the time of excessive gas generation in a waste synthetic resin pyrolysis facility. The safety device comprises: a plurality of reactors (31, 32, 33, 34); an emergency ignition furnace (35); a plurality of condensers (51, 52, 53, 54); a gas pipe (P); an oil reservoir; a heat exchanger (70); a scrubber (80); and a fire occurrence prevention unit (90). According to the present invention, the risk of fire and explosion can be prevented.

Description

A SAFETY APPARATUS WHEN EXCESS GAS IS GENERATED IN A THERMAL PYROLYSIS FACILITY OF WASTE SYNTHETIC RESINS

The present invention is adjacent to each other in the heating furnace, arranged sequentially from left to right, has a plurality of burners (31-1, 32-1, 33-1, 34-1), the combustion furnace (31a, installed in the heating furnace) A plurality of reactors (31, 32, 33, 34) capable of thermal decomposition of waste synthetic resin including waste wires by the flame ignited in 32a, 33a, 34a); a non-ignition furnace (35) disposed adjacent to the reactor (34) among the plurality of reactors (31, 32, 33, 34) and having a non-ignition burner (35-1); It is connected to the plurality of reactors 31, 32, 33, 34 through branch pipes 51-1, 52-1, 53-1, 54-1, and a plurality of burners 31-1, 32-1, 33-1, 34-1) connected to the second connector pipe (P1', P2', P3', P4') connected to the first connector pipe (P1, P2, P3, P4) connected in communication with the plurality of After cooling the gas generated by thermal decomposition in the reactor (31, 32, 33, 34) through the cooling tower (55), and condensing it while passing it inside, it is separated into recycled oil and non-condensed gas that is not condensed at room temperature. a plurality of condensers (51, 52, 53, 54); a gas pipe (P) connected to the emergency ignition burner (35-1) through a connecting pipe (P5') and also connected to the second connecting pipe (P1', P2', P3', P4'); Primary oil tanks (61, 62, 63, 64) connected to the lower end of the condensers (51, 52, 53, 54) to receive and receive the regenerated oil, and primary oil tanks (61, 62, 63, 64) ) connected through a third connecting pipe 63L to collect and store the oil in the primary oil tanks 61, 62, 63, 64, and a plurality of burners 31-1, 32-1, 33-1, 34 - 1) and an oil reservoir including secondary oil tanks (65, 66) connected to the emergency ignition burner (35-1) through a fourth connecting pipe (65L); a heat exchanger 70 connected to the oil tank 60 through a hot water pipe through which hot water circulates to maintain the regenerated oil contained in the secondary oil tanks 65 and 66 in a liquid phase; a scraper (80) connected to the heat exchanger (70) and allowing the gas burned in the emergency ignition furnace (35) to be discharged to the atmosphere through the heat exchanger (70); and fire prevention by preventing the occurrence of a fire due to the non-condensed gas supplied to the plurality of burners 31-1, 32-1, 33-1, 34-1 at a pressure higher than the set pressure through the gas pipe P It relates to a safety device when generating overgas of a pyrolysis facility of waste synthetic resin, characterized in that it comprises a part (90).

Due to the development of industry, the use of waste synthetic resin including waste cables is increasing, and only a part of the waste synthetic resin coatings or other waste synthetic resins of the waste cables used in this way are recycled, and the rest is disposed of by incineration, landfill or other methods. As a result, environmental pollution is becoming more and more serious.

Although there was a conventional technique of extracting regenerated oil by thermal decomposition with the waste synthetic resin coating of the waste wire or other waste synthetic resin, it was heated to a high temperature in the reactor for thermal decomposition (melting) of the waste synthetic resin coating of the waste wire or other waste synthetic resin. In the case of thermal decomposition, the waste synthetic resin in the reactor is gasified and the post-treatment facility including the condenser or emergency ignition furnace cannot handle the gas, so a large amount of gas is leaked to the outside and meets the air, leading to fire and explosion. have.

In addition, in the prior art for extracting regenerated oil, there is a problem that the amount of regenerated oil to be extracted is small.

In addition, in the prior art of extracting the regenerated oil, there is a problem that only extracts the regenerated oil, but cannot completely burn the extracted regenerated oil by recycling it as fuel for thermal decomposition in the reactor.

In addition, there is a limit to the amount of thermal decomposition treatment that can be pyrolyzed when thermally decomposing the waste synthetic resin coating of the waste wire or other waste synthetic resin in the reactor.

In addition, there is a problem in that the gas generated when extracting regenerated oil by thermal decomposition with the waste synthetic resin coating of the waste wire or other waste synthetic resin is exposed to the atmosphere as it is, thereby exacerbating environmental pollution.

Patent Publication No. 10-2013-0022308 (2013.03.06.)

The safety device when generating overgas of a pyrolysis facility for waste synthetic resin according to the present invention is to solve the following matters.

It is an object of the present invention, as a risk expected when pyrolysis is performed at high temperature in a reactor for thermal decomposition (melting) of the waste synthetic resin coating of the waste wire or other waste synthetic resin, the waste synthetic resin in the reactor is gasified and its Provides a safety device when generating excess gas in the pyrolysis facility of waste synthetic resin to prevent the risk of fire and explosion when a large amount of gas is leaked to the outside and comes into contact with the air because the post-treatment facility including the condenser or emergency ignition furnace cannot handle the gas will do

In addition, it is to provide a safety device when the overgas is generated in the pyrolysis facility of the waste synthetic resin in which the amount of regenerated oil to be extracted is increased.

In addition, it is to provide a safety device when generating overgas in a pyrolysis facility of waste synthetic resin that not only extracts regenerated oil, but also recycles the extracted regenerated oil as fuel for pyrolysis in a reactor and burns it completely.

In addition, in the case of pyrolysis of waste synthetic resin coatings or other waste synthetic resins of waste wires in the reactor, it is possible to increase the amount of pyrolysis treatment that can be treated by pyrolysis.

In addition, it is possible to reduce environmental pollution when the gas generated when extracting regenerated oil by pyrolysis with the waste synthetic resin coating of the waste wire or other waste synthetic resin is released into the atmosphere. to provide the device.

The safety device when generating overgas of the pyrolysis facility of waste synthetic resin of the present invention is configured as follows in order to solve the above problems.

The combustion furnaces 31a, 32a, 33a are adjacent to each other in the heating furnace and are sequentially arranged from left to right, have a plurality of burners 31-1, 32-1, 33-1, 34-1, and are installed in the heating furnace. , a plurality of reactors (31, 32, 33, 34) capable of thermal decomposition of waste synthetic resin including waste wires by the flame ignited in 34a); a non-ignition furnace (35) disposed adjacent to the reactor (34) among the plurality of reactors (31, 32, 33, 34) and having a non-ignition burner (35-1); It is connected to the plurality of reactors 31, 32, 33, 34 through branch pipes 51-1, 52-1, 53-1, 54-1, and a plurality of burners 31-1, 32-1, 33-1, 34-1) connected to the second connector pipe (P1', P2', P3', P4') connected to the first connector pipe (P1, P2, P3, P4) connected in communication with the plurality of After cooling the gas generated by thermal decomposition in the reactor (31, 32, 33, 34) through the cooling tower (55), and condensing it while passing it inside, it is separated into recycled oil and non-condensed gas that is not condensed at room temperature. a plurality of condensers (51, 52, 53, 54); a gas pipe (P) connected to the emergency ignition burner (35-1) through a connecting pipe (P5') and also connected to the second connecting pipe (P1', P2', P3', P4'); Primary oil tanks (61, 62, 63, 64) connected to the lower end of the condensers (51, 52, 53, 54) to receive and receive the regenerated oil, and primary oil tanks (61, 62, 63, 64) ) connected through a third connecting pipe 63L to collect and store the oil in the primary oil tanks 61, 62, 63, 64, and a plurality of burners 31-1, 32-1, 33-1, 34 - 1) and an oil reservoir including secondary oil tanks (65, 66) connected to the emergency ignition burner (35-1) through a fourth connecting pipe (65L); a heat exchanger 70 connected to the oil tank 60 through a hot water pipe through which hot water circulates to maintain the regenerated oil contained in the secondary oil tanks 65 and 66 in a liquid phase; a scraper (80) connected to the heat exchanger (70) and allowing the gas burned in the emergency ignition furnace (35) to be discharged to the atmosphere through the heat exchanger (70); and fire prevention by preventing the occurrence of a fire due to the non-condensed gas supplied to the plurality of burners 31-1, 32-1, 33-1, 34-1 at a pressure higher than the set pressure through the gas pipe P It is characterized in that it includes a portion (90).

The fire prevention unit 90 is connected to a portion of the second connection pipe (P1', P2', P3', P4') to which the gas pipe (P) is connected and the first connection pipe (P1, P2, P3, P4). a pressure gauge 91 provided between portions of the second connecting pipe P1', P2', P3', and P4'; A portion of the second connector pipe (P1', P2', P3', P4') to which the gas pipe (P) is connected and the second connector pipe (P1', P2) connected to the first connector pipe (P1, P2, P3, P4) ', P3', P4' is installed in the second connector pipe (P1', P2', P3', P4') between the parts of the second connector pipe (P1', P2', P3', P4') ) is set and the pressure measured by the pressure gauge 91 is less than the first set pressure, the set state is maintained and the measured pressure is higher than the second set pressure, which is higher than the first set pressure. Manual valve 92 that can be manually adjusted so that the second connecting pipe (P1', P2', P3', P4') is completely closed when: the second connecting pipe (P1', P2) to which the gas pipe (P) is connected ', P3', P4') proportional control valve 93 installed in the portion of the gas pipe (P) adjacent to the portion; and a controller connected to the pressure gauge 91 and the proportional control valve 93, wherein the pressure measured in a state in which the setting state of the manual valve 92 is maintained is equal to or greater than the first set pressure and is more than the first set pressure When the high pressure is within the range less than the second set pressure, the controller transmits a command to the proportional control valve 93 to adjust the degree of opening and closing of the flow path of the proportional control valve 93 in proportion to the measured pressure. characterized.

In one embodiment, the plurality of reactors (31, 32, 33, 34), respectively, each of the inner passage made of the internal fire wall (W1), adjacent to the inner cylinder, the outer cylinder consisting of the outer heat insulating wall (W2) It is characterized in that it is disposed at intervals in the heating furnace made of and is indirectly heated.

A plurality of condensers (51, 52, 53, 54), respectively, a plurality of condensing pipes (C2, C3, C4, C5) disposed at a distance from each other; And disposed between the plurality of condensing pipes (C2, C3, C4, C5), adjacent to the lower end of the upstream condensing pipe among the condensing pipes on both sides adjacent to each other and adjacent to the upper end of the downstream condensing pipe among the both sides of the condensing pipe. It is characterized in that it comprises a plurality of transmission pipes (t1, t2, t3, t4) respectively connected to.

The present invention can exhibit the following effects by the above solution.

First, it is an expected risk when pyrolysis is carried out at a high temperature in the reactor for thermal decomposition (melting) of the waste synthetic resin coating of waste wires or other waste synthetic resin. It has the effect of providing a safety device when generating excess gas in the pyrolysis facility of waste synthetic resin, which prevents the risk of fire and explosion when a large amount of gas is leaked to the outside because the facility cannot handle it and meets the air.

Second, there is an effect of providing a safety device when the overgas is generated in the pyrolysis facility of the waste synthetic resin, in which the amount of regenerated oil to be extracted is increased.

Third, there is an effect of providing a safety device for the generation of overgas in the pyrolysis facility of waste synthetic resin that not only extracts the regenerated oil, but also recycles the extracted regenerated oil as fuel for pyrolysis in the reactor and burns it completely.

Fourth, when pyrolysis of waste synthetic resin coatings or other waste synthetic resins of waste wires in the reactor, it is possible to increase the amount of pyrolysis treatment that can be pyrolyzed. .

Fifth, when pyrolyzing with waste synthetic resin coating of waste wires or other waste synthetic resins to release gas generated when extracting regenerated oil into the atmosphere, it is possible to reduce environmental pollution when generating excess gas in waste synthetic resin pyrolysis facilities It has the effect of providing a device.

1 is a perspective view of a main part of a safety device when generating overgas of a pyrolysis facility for waste synthetic resin according to an embodiment, as viewed obliquely from one side.
Figure 2 is a perspective view of the main part of the safety device when generating overgas of the pyrolysis facility of the waste synthetic resin of Figure 1 viewed from the opposite side.
Figure 3 is a plan view of the main part of the safety device when generating overgas of the pyrolysis facility of the waste synthetic resin of Figure 1;
Figure 4 is an enlarged view of part A of Figure 3;
5 is a view showing a safety device and the flow of non-condensed gas and regenerated oil when generating overgas of a pyrolysis facility for waste synthetic resin consisting of all parts including the main part of FIG. 1 .
Figure 6 is a view showing the condenser of the safety device when generating the overgas of the pyrolysis facility of the waste synthetic resin of Figure 1;
FIG. 7 is a view showing a reactor according to an embodiment applied to a safety device when generating an overgas of the pyrolysis facility of the waste synthetic resin of FIG. 1 .
8 is a plan view of a reactor according to an embodiment applied to a safety device when generating an overgas of the pyrolysis facility of the waste synthetic resin of FIG. 1;
Fig. 9 is a perspective view showing the inside of one of the reactors of Fig. 8 by partially cutting it;

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. However, this is not intended to limit the technology described in this document to specific embodiments, and it should be understood that the present document includes various modifications, equivalents, and/or alternatives of the embodiments of the present document. In connection with the description of the drawings, like reference numerals may be used for like components.

In addition, expressions such as "first," "second," used in this document may modify various elements regardless of order and/or importance, and in order to distinguish one element from another element, It is used only and does not limit the corresponding components. For example, 'first part' and 'second part' may represent different parts regardless of order or importance. For example, without departing from the scope of the rights described in this document, a first component may be referred to as a second component, and similarly, the second component may also be renamed as a first component.

In addition, terms used in this document are used only to describe specific embodiments, and may not be intended to limit the scope of other embodiments. The singular expression may include the plural expression unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meanings as commonly understood by one of ordinary skill in the art described in this document. Among terms used in this document, terms defined in a general dictionary may be interpreted with the same or similar meaning as the meaning in the context of the related art, and unless explicitly defined in this document, ideal or excessively formal meanings is not interpreted as In some cases, even terms defined in this document cannot be construed to exclude embodiments of the present document.

Hereinafter, an exemplary embodiment of the present invention for solving the above problems in conjunction with the accompanying drawings will be described.

1 is a perspective view obliquely viewed from one side of the main part of the safety device when generating overgas of the pyrolysis facility for waste synthetic resin according to an embodiment, and FIG. It is a perspective view of the main part viewed from the opposite side, Figure 3 is a plan view of the main part of the safety device when generating overgas of the pyrolysis facility of waste synthetic resin of Figure 1, Figure 4 is an enlarged view of part A of Figure 3, Figure 5 is 1 is a view showing a safety device and the flow of non-condensable gas and regenerated oil when generating overgas of the pyrolysis facility of waste synthetic resin consisting of all parts including the main part of 1, and FIG. 6 is the overgas of the pyrolysis facility of waste synthetic resin of FIG. It is a view showing the condenser of the safety device at the time of generation, and FIG. 7 is a view showing a reactor according to an embodiment applied to the safety device when generating overgas of the pyrolysis facility of the waste synthetic resin of FIG. 1, FIG. It is a plan view of a reactor according to an embodiment applied to a safety device when generating overgas of the pyrolysis facility of waste synthetic resin of 1 .

As shown in Figures 1 to 8, the safety device when generating overgas of the pyrolysis facility of waste synthetic resin according to an embodiment is a plurality of reactors (31, 32, 33, 34), an emergency ignition furnace (35), a plurality of condensers ( 51 , 52 , 53 , 54 ), a gas pipe (P), an oil reservoir, a heat exchanger 70 , a scraper 80 , and a fire prevention unit 90 .

The plurality of reactors 31, 32, 33, and 34 are adjacent to each other in the heating furnace and are sequentially arranged from left to right, and a plurality of burners 31-1, 32-1, 33-1, 34-1 It is possible to thermally decompose the waste synthetic resin including the waste wire by the flame ignited in the combustion furnaces 31a, 32a, 33a, 34a installed in the heating furnace. In the plurality of reactors (31, 32, 33, 34), the waste synthetic resin including the waste wire is put in, and after closing the covers of the plurality of reactors (31, 32, 33, 34), the burner (31-1, 32-1, 33-1, 34-1), by heating the reactor (31, 32, 33, 34) by ignition through the waste wire containing the waste wire in the reactor (31, 32, 33, 34) Synthetic resins can be thermally decomposed.

The non-ignition furnace 35 is disposed adjacent to the reactor 34 among the plurality of reactors 31 , 32 , 33 , and 34 , includes a non-ignition burner 35 - 1 , and includes a plurality of condensers 51 . , 52, 53, 54 are connected to a plurality of reactors 31, 32, 33, 34 through branch pipes 51-1, 52-1, 53-1, 54-1, and at one end A second connector (P1', P2', P3') connected to the first connector (P1, P2, P3, P4) connected to the burner (31-1, 32-1, 33-1, 34-1) of P4 '), the gas generated by thermal decomposition in the plurality of reactors (31, 32, 33, 34) is cooled through a cooling tower (55), and then condensed while passing through the inside to obtain recycled oil, and room temperature The gas pipe (P) is connected to the emergency ignition burner (35-1) through the connection pipe (P5') and the second connection pipe (P1', P2', P3', P4') is also connected. Here, when the waste synthetic resin in the reactor (31, 32, 33, 34) is thermally decomposed, 30% of the pure waste synthetic resin is a non-condensed gas that is not condensed at room temperature.

According to the above configuration, the gas generated by thermal decomposition in the reactor (31, 32, 33, 34) is cooled through the branch pipes (51-1, 52-1, 53-1, 54-1) and the cooling tower (55) Then, it is condensed while passing inside and separated into recycled oil having a melting point of 30 to 40 ° C depending on the type of waste synthetic resin including waste wires, and non-condensed gas that is non-condensed at room temperature, and this non-condensed gas is After flowing through the gas pipe (P), it is again supplied to the plurality of burners (31-1, 32-1, 33-1, 34-1) through the first connecting pipe (P1, P2, P3, P4) to the burner ( It can be used as fuel used for ignition of 31-1, 32-1, 33-1, 34-1) and is supplied to the emergency ignition burner 35-1 through the connection pipe ( P5' ) to ignite the emergency. It is possible that the burner 35 - 1 is ignited and also burned in the emergency ignition furnace 35 .

In another embodiment, between the other end of the plurality of condensers (51, 52, 53, 54) and the gas pipe (P) the other end of the plurality of condensers (51, 52, 53, 54) and the gas pipe (P) Catalyst towers (T1, T2, T3, T4) installed in connection and communication, and a transmission pipe (t0) between each of these catalyst towers (T1, T2, T3, T4) and the condensation pipe (C2) further comprising Configuration is also possible. In the catalyst towers (T1, T2, T3, T4), the wax component contained in the gas is reformed using a catalyst, and passes through the catalyst towers (T1, T2, T3, T4) and a plurality of condensers (51, 52, 53, 54) ), it is possible to prevent the regenerated oil from being hardened and clogged by the wax component.

The oil reservoir is connected to the lower end of the condenser (51, 52, 53, 54) to receive and receive the regenerated oil, primary oil tanks (61, 62, 63, 64), and primary oil tanks (61, 62) , 63 and 64 are connected through a third connection pipe 63L to collect and store the oil in the primary oil tanks 61, 62, 63, 64, and a plurality of burners 31-1, 32-1, 33 -1, 34-1) and the emergency ignition burner 35-1 also include secondary oil tanks 65 and 66 connected through the fourth connecting pipe 65L. In the primary oil tanks (61, 62, 63, 64), the regenerated oil extracted while the gas generated by thermal decomposition in the reactor (31, 32, 33, 34) passes through the condensers (51, 52, 53, 54) is collected The regenerated oil received primarily and accommodated in the primary oil tanks 61, 62, 63, and 64 is again supplied to the secondary oil tanks 65 and 66 through the third connecting pipe 63L to supply secondary oil. It is possible to be stored in tanks 65 and 66 .

In one embodiment, the secondary oil tanks 65 and 66 have a carbon heater incorporated in the bottom wall. As such, since a carbon heater is built in the bottom wall of the secondary oil tanks 65 and 66, it is possible to heat the regenerated oil in the solidified paste state stored in the secondary oil tanks 65 and 66 to make it liquid. , since the regenerated oil in the liquid state has fluidity, the plurality of burners 31-1, 32-1, 33-1, 34-1 and the non-ignition burner 35 are passed through the fourth connecting pipe 65L. It is possible to be supplied to -1) and used as fuel.

In another embodiment, the heat exchanger 70 does not have a built-in carbon heater in the bottom wall, unlike in the above embodiment, but maintains the regenerated oil accommodated in the secondary oil tanks 65 and 66 in a liquid state. A configuration in which hot water is circulated to be connected to the oil tank 60 through a hot water pipe (not shown) is also possible. Since the regenerated oil is heated by the hot water pipe to a liquid state and has fluidity, it is connected to a plurality of burners 31-1, 32-1, 33-1, and 34-1 through the fourth connection pipe 65L. It may be supplied to the emergency ignition burner 35-1 and used as fuel.

The scraper 80 is connected to the heat exchanger 70 , and the gas burned in the emergency ignition furnace 35 is discharged to the atmosphere through the heat exchanger 70 . During combustion in the emergency ignition furnace 35, complete combustion occurs. In this case, carbon monoxide (CO2) gas is mainly generated during complete combustion and carbon monoxide (CO) gas is generated during incomplete combustion. It is less harmful to the environment because it can reduce the emission of (CO) gas.

In another embodiment, the scraper 80 is a cleaning dust collector 81 installed inside the scraper 80 to collect foreign substances such as dust contained in the gas passing through the heat exchanger 70 and passing through the inside of the scraper 80 . ) is further included. As described above, since the cleaning dust collector 81 is installed inside the scraper 80, when the gas is discharged to the atmosphere after complete combustion, the dust contained in the gas passing through the scraper 80 through the heat exchanger 70 It is less harmful from an environmental point of view as it can collect foreign substances.

The fire prevention unit 90 prevents fire caused by non-condensed gas supplied to the plurality of burners 31-1, 32-1, 33-1, 34-1 at a pressure higher than the set pressure through the gas pipe P. prevent the occurrence.

Specifically, the fire prevention unit 90, the portion of the second connection pipe (P1', P2', P3', P4') to which the gas pipe (P) is connected and the first connection pipe (P1, P2, P3, P4) ) a pressure gauge 91 installed between portions of the second connection pipe (P1', P2', P3', P4') connected to it; A portion of the second connector pipe (P1', P2', P3', P4') to which the gas pipe (P) is connected and the second connector pipe (P1', P2) connected to the first connector pipe (P1, P2, P3, P4) ', P3', P4' is installed in the second connector pipe (P1', P2', P3', P4') between the parts of the second connector pipe (P1', P2', P3', P4') ) is set and the pressure measured by the pressure gauge 91 is less than the first set pressure, the set state is maintained and the measured pressure is higher than the second set pressure, which is higher than the first set pressure. Manual valve 92 that can be manually adjusted so that the second connecting pipe (P1', P2', P3', P4') is completely closed when: the second connecting pipe (P1', P2) to which the gas pipe (P) is connected ', P3', P4') proportional control valve 93 installed in the portion of the gas pipe (P) adjacent to the portion; and a controller (not shown) connected to the pressure gauge 91 and the proportional control valve 93, wherein the pressure measured in a state in which the setting state of the manual valve 92 is maintained is equal to or greater than the first set pressure, When it is within the range less than the second set pressure, which is a pressure higher than the first set pressure, the controller sends a command to adjust the degree of opening and closing of the flow path of the proportional control valve 93 in proportion to the measured pressure. ) to send Here, the pressure gauge 91 is a portion of the second connection pipe (P1', P2', P3', P4') to which the gas pipe (P) is connected and the second connected to the first connection pipe (P1, P2, P3, P4). Although illustrated and described as being installed between portions of the connector pipes P1', P2', P3', and P4', the present invention is not limited thereto, and in another embodiment, the first connector pipes P1, P2, P3, P4 ) is also possible.

According to the above configuration, when the pressure measured in the state in which the setting state of the manual valve 92 is maintained is greater than the first set pressure and is less than the second set pressure, which is a pressure higher than the first set pressure, the By controlling the degree of opening and closing of the flow path of the proportional control valve 93 in proportion to the pressure measured by the proportional control valve 93 according to the command of the controller, the non-condensed gas is dispersed and flowed into the gas pipe P, so that the first connection pipe (P1, P2, P3, P4) The amount of non-condensed gas supplied to the plurality of burners (31-1, 32-1, 33-1, 34-1) through (P1, P2, P3, P4) is distributed in the reactor It is possible to prevent the risk of fire and explosion as the waste synthetic resin is gasified and the gas cannot be handled by the post-treatment facility including the condenser or emergency ignition furnace, so a large amount of gas is leaked to the outside and meets the air.

In another embodiment, the plurality of reactors (31, 32, 33, 34) are, respectively, into an inner passage made of an inner fire wall (W1), and an outer tube made of an external heat insulating wall (W2) adjacent to the inner tube. It is indirectly heated by the heat generated by the flame ignited in the combustion furnaces 31a, 32a, 33a, 34a disposed at intervals in the heating furnace and installed in communication with the heating furnace. According to this, when accommodating the plurality of reactors 31, 32, 33, and 34 in the heating furnace, it is possible to circulate and use a plurality of other reactors that are disposed outside and stand-by, so that the heating furnace is not cooled. Since it is possible to continuously work with the method, there is an advantage in that productivity is improved compared to the prior art. And, since the heating furnace is continuously heated, as in the prior art, it is possible to prevent further fuel consumption by raising the melting temperature again after cooling as in the prior art, thereby reducing fuel cost compared to the prior art.

In another embodiment, the plurality of reactors (31, 32, 33, 34), respectively, have an inner round tubular fire wall (W1), a round tubular heat insulating wall (W1) adjacent to the outer surface of the fire wall (W1), respectively. W2), and a perforated plate W3 arranged horizontally on the bottom of the fireproof wall W1 and the heat insulating wall W2 to form a plurality of perforations for air supply, and a space for forming an air layer under the perforated plate W3 A first furnace 100 including a bottom plate (W4) spaced apart between the (100); a communication pipe 11 communicating with the space forming the air layer; a feed fan 12 installed in the communication pipe 11 to supply air; a combustion unit 13 connected to the first furnace 100; Including a burner 14 provided in the combustion unit 13, ignited using the burner 14 and the feed pan 12, including a waste wire placed on the perforated plate W3 in the first furnace 100 It is possible to pyrolyze the waste synthetic resin that is used for direct heating. According to this, by direct heating pyrolysis of the waste synthetic resin including the waste wire placed on the perforated plate W3 in the first furnace 100, the amount of thermal decomposition treatment of the waste synthetic resin including the waste wire made within the same time can be increased. This contributes to productivity improvement.

In another embodiment, the plurality of reactors (31, 32, 33, 34), respectively, have an inner round tubular fire wall (W1), a round tubular heat insulating wall (W1) adjacent to the outer surface of the fire wall (W1), respectively. W2), and a perforated plate W3 arranged horizontally on the bottom of the fireproof wall W1 and the heat insulating wall W2 to form a plurality of perforations for air supply, and a space for forming an air layer under the perforated plate W3 a second furnace 110 including a bottom plate (W4) spaced apart therebetween; a communication pipe 11 communicating with the space forming the air layer; The feed fan 12 installed in the communication pipe 11 to supply air; a combustion unit 13 connected to the second furnace 110; It further includes a burner 14 provided in the combustion unit 13, and uses the burner 14 and the feed pan 12 to ignite the waste wire stacked on the perforated plate W3 in the second furnace 110. It is possible to thermally decompose the waste synthetic resin including the direct heating type, and the first furnace 100 and the second furnace 110 are connected in parallel through a connecting pipe 15 . According to this configuration, the first furnace 100 and the second furnace 110 connected in parallel through the connection pipe 15 can be circulated and used, and thus the waste synthetic resin including the waste wire within the set time range. Since the amount of thermal decomposition can be increased, there is an advantage in that productivity is improved compared to the prior art.

In addition, the safety device when generating overgas of the pyrolysis facility for waste synthetic resin of the present invention is a connection pipe 15 adjacent to the first furnace 100 and the second furnace 110, respectively, among the connection pipes 15 connected in communication with the combustion furnace. ) and further comprising a knife gate valve 16 connected to the controller. In this configuration, since it is possible to open and close the portion of the connecting pipe 15 adjacent to the first furnace 100 and the second furnace 110, respectively, by using the knife gate valve 16 by the controller, the connection is made accordingly. Select and selectively use only one of the first furnace 100 and the second furnace 110 connected in parallel through the pipe 15, or use both the first furnace 100 and the second furnace 110, or Alternatively, it becomes possible not to use both the first furnace 100 and the second furnace 110 .

A plurality of condensers (51, 52, 53, 54), respectively, a plurality of condensing pipes (C2, C3, C4, C5) disposed at a distance from each other; And disposed between the plurality of condensing pipes (C2, C3, C4, C5), adjacent to the lower end of the upstream condensing pipe among the condensing pipes on both sides adjacent to each other and adjacent to the upper end of the downstream condensing pipe among the both sides of the condensing pipe. Includes a plurality of transmission pipes (t1, t2, t3, t4) respectively connected to. According to this, the non-condensed gas flowing through the condensing pipes (C2, C3, C4, C5) and the transmission pipes (t1, t2, t3, t4) of the plurality of condensers (51, 52, 53, 54) is a zigzag path. By doing so, the residence time of the non-condensed gas in the condensers (51, 52, 53, 54) is extended, and accordingly, the amount of regenerated oil extracted from the gas flowing through the condensers (51, 52, 53, 54) can be increased.

Hereinafter, the operating relationship of the present invention will be described as follows.

The lid of the reactor (31, 32, 33, 34) is opened, the waste synthetic resin including the waste wire is put in, and the burner (31-1, 32-1, 33-1, and 34-1) are ignited to pyrolyze the waste synthetic resin including the waste wires in the reactors 31, 32, 33, and 34, and gas is generated.

The generated gas flows to the gas pipe P through the branch pipes 51-1, 52-1, 53-1, and 54-1, and the gas flowing in the gas pipe P is the second connection pipe P1', P2 ', P3', P4') through the condensers (51, 52, 53, 54), and in the process of passing the condensers (51, 52, 53, 54), regenerated oil is generated and the primary oil tanks (61, 62, 63 and 64) and stored in the secondary oil tanks 65 and 66 through the fourth connecting pipe 65L again, and regenerated in the process of passing the gas through the condensers 51, 52, 53 and 54. Non-condensable gas (eg, liquefied petroleum gas (LPG), liquefied natural gas (LNG), or naphtha) that is not extracted from the flow path and is not condensed at room temperature is supplied from the condenser (51, 52, 53, 54) to the second connection pipe (P1). ', P2', P3', P4') and the first connection pipe (P1, P2, P3, P4) are supplied to the burners 31-1, 32-1, 33-1, 34-1, and are supplied as fuel. used During this process, a portion of the second connection pipe (P1', P2', P3', P4') to which the gas pipe (P) is connected and the second connection pipe (P1, P2, P3, P4) connected to the first connection pipe ( When the pressure measured by the pressure gauge 91 installed between parts of P1', P2', P3', and P4' is less than the first set pressure, the second connection pipe (P1', P2', P3', P4') ), the set state of the degree of opening is maintained.

In addition, the pressure measured in the state in which the setting state of the manual valve 92 is maintained during the process in which the non-condensed gas is used as fuel as described above is equal to or greater than the first set pressure and the second set pressure is higher than the first set pressure. When it is within the range of less than the set pressure, the controller transmits a command to adjust the degree of opening and closing of the flow path of the proportional control valve 93 in proportion to the measured pressure to the proportional control valve 93 . By controlling the degree of opening and closing of the flow path of 1, 34-1), a fire caused by non-condensed gas supplied to a plurality of burners (31-1, 32-1, 33-1, 34-1) by dispersing the supply amount of the non-condensed gas and the resulting pressure It is possible to prevent the occurrence of In addition, the non-condensable gas dispersed and flowing through the gas pipe P is supplied to the non-ignition burner 35-1 through the connection pipe P5 so that the non-ignition burner 35-1 is ignited and also the non-ignition furnace 35 ) can be burned.

In addition, when the pressure measured during the process in which the non-condensed gas is used as a fuel becomes higher than the second set pressure higher than the first set pressure, the second connection pipe P1', P2' with the manual valve 92 , P3', P4'), it is possible to completely block the possibility of fire by manually adjusting it to be completely closed.

In addition, in the primary oil tanks (61, 62, 63, 64), the gas generated by thermal decomposition in the reactor (31, 32, 33, 34) is extracted while passing through the condensers (51, 52, 53, 54) regeneration Oil is collected and received primarily, and the regenerated oil accommodated in the primary oil tanks (61, 62, 63, 64) is again supplied to the secondary oil tanks (65, 66) through the third connecting pipe (63L), It is stored in the primary oil tanks (65, 66), and the regenerated oil stored in the secondary oil tanks (65, 66) in this way is burner (31-1, 32-1, 33-1, 34-) as shown in FIG. 1) and the emergency ignition burner 35-1 can be supplied to be reused as fuel.

Although the present invention described above has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible by those skilled in the art. should be made clear. Accordingly, the true technical protection scope of the present invention should be construed by the appended claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

11: communication pipe 12: feed pan
12-1: communication pipe 13: combustion part
14: burner 15: connector
16: knife gate valve 31: reactor
31a, 32a, 33a, 34a: combustion furnace 31-1, 32-1, 33-1, 34-1: burner
35: emergency ignition furnace 35-1: emergency ignition burner
51, 52, 53, 54: condenser 51-1, 52-1, 53-1, 54-1: branch pipe
55: cooling tower 60: oil tank
61, 62, 63, 64: primary oil tank 65, 66: secondary oil tank
63L: third connector 65L: fourth connector
70: heat exchanger 80: scraper
81: cleaning dust collector 90: fire prevention part
91: pressure gauge 92: manual valve
93: proportional control valve 100: first furnace
110: second row
C1, C2, C3, C4, C5 : Condensation pipe P : Gas pipe
P1, P2, P3, P4: first connector P1', P2', P3', P4': second connector
T1, T2, T3, T4: Transmission pipe W1: Fire wall
W2: Insulation wall W3: Perforated plate
W4: Base plate

Claims (4)

The combustion furnaces 31a, 32a, 33a are adjacent to each other in the heating furnace and are sequentially arranged from left to right, have a plurality of burners 31-1, 32-1, 33-1, 34-1, and are installed in the heating furnace. , a plurality of reactors (31, 32, 33, 34) capable of thermal decomposition of waste synthetic resin including waste wires by the flame ignited in 34a);
a non-ignition furnace (35) disposed adjacent to the reactor (34) among the plurality of reactors (31, 32, 33, 34) and having a non-ignition burner (35-1);
It is connected to the plurality of reactors 31, 32, 33, 34 through branch pipes 51-1, 52-1, 53-1, 54-1, and a plurality of burners 31-1, 32-1, 33-1, 34-1) connected to the second connector pipe (P1', P2', P3', P4') connected to the first connector pipe (P1, P2, P3, P4) connected in communication with the plurality of After cooling the gas generated by thermal decomposition in the reactor (31, 32, 33, 34) through the cooling tower (55), and condensing it while passing it inside, it is separated into recycled oil and non-condensed gas that is not condensed at room temperature. a plurality of condensers (51, 52, 53, 54);
a gas pipe (P) connected to the emergency ignition burner (35-1) through a connecting pipe (P5') and also connected to the second connecting pipe (P1', P2', P3', P4');
Primary oil tanks 61 , 62 , 63 , 64 connected to the lower end of the condensers 51 , 52 , 53 , 54 to receive and receive the regenerated oil, and primary oil tanks 61 , 62 , 63 , 64 ) connected through a third connecting pipe 63L to collect and store the oil in the primary oil tanks 61, 62, 63, 64, and a plurality of burners 31-1, 32-1, 33-1, 34 - 1) and an oil reservoir including secondary oil tanks (65, 66) connected to the emergency ignition burner (35-1) through a fourth connecting pipe (65L);
a heat exchanger 70 connected to the oil tank 60 through a hot water pipe through which hot water circulates to maintain the regenerated oil contained in the secondary oil tanks 65 and 66 in a liquid state;
a scraper (80) connected to the heat exchanger (70) and allowing the gas burned in the emergency ignition furnace (35) to be discharged to the atmosphere through the heat exchanger (70); and
A fire prevention unit that prevents the occurrence of a fire due to non-condensed gas supplied to the plurality of burners (31-1, 32-1, 33-1, 34-1) at a pressure higher than the set pressure through the gas pipe (P). (90) ;
The fire prevention unit 90,
A portion of the second connector pipe (P1', P2', P3', P4') to which the gas pipe (P) is connected and the second connector pipe (P1', P2) connected to the first connector pipe (P1, P2, P3, P4) ', P3', P4') a pressure gauge 91 provided between the parts;
A portion of the second connector pipe (P1', P2', P3', P4') to which the gas pipe (P) is connected and the second connector pipe (P1', P2) connected to the first connector pipe (P1, P2, P3, P4) ', P3', P4' is installed in the second connector pipe (P1', P2', P3', P4') between the parts of the second connector pipe (P1', P2', P3', P4') ) is set and the pressure measured by the pressure gauge 91 is less than the first set pressure, the set state is maintained and the measured pressure is higher than the second set pressure, which is higher than the first set pressure. Manual valve 92 that can be manually adjusted so that the second connection pipe (P1', P2', P3', P4') is completely closed when it is:
a proportional control valve 93 installed in a portion of the gas pipe P adjacent to the portion of the second connection pipe P1', P2', P3', P4' to which the gas pipe P is connected; and
It includes a controller connected to the pressure gauge 91 and the proportional control valve 93,
When the pressure measured while the setting state of the manual valve 92 is maintained is greater than or equal to the first set pressure and is less than the second set pressure, which is a pressure higher than the first set pressure, the controller controls the measured Transmits a command to control the degree of opening and closing of the flow path of the proportional control valve 93 in proportion to the pressure so that the non-condensed gas is dispersed and flowed into the gas pipe P to the proportional control valve 93,
The plurality of reactors 31, 32, 33, and 34 are, respectively, a round tubular fire wall W1 inside, a round tubular heat insulating wall W2 adjacent to the outer surface of the fire wall W1, and a fire wall ( A perforated plate W3 arranged horizontally on the bottom surface of W1) and the heat insulating wall W2 to form a plurality of perforated holes for air supply, and a bottom plate spaced apart from each other through a space forming an air layer under the perforated plate W3 a first furnace 100 including (W4); a communication pipe 11 communicating with the space forming the air layer; a feed fan 12 installed in the communication pipe 11 to supply air; a combustion unit 13 connected to the first furnace 100; A burner 14 provided in the combustion unit 13 is included, and a waste wire is ignited using the burner 14 and the feed pan 12 and placed on the perforated plate W3 in the first furnace 100. It is possible to pyrolyze the waste synthetic resin that is
The plurality of reactors 31, 32, 33, and 34 are, respectively, a round tubular fire wall W1 inside, a round tubular heat insulating wall W2 adjacent to the outer surface of the fire wall W1, and a fire wall ( A perforated plate W3 arranged horizontally on the bottom surface of W1) and the heat insulating wall W2 to form a plurality of perforated holes for air supply, and a bottom plate spaced apart from each other through a space forming an air layer under the perforated plate W3 a second furnace 110 comprising (W4); a communication pipe 11 communicating with the space forming the air layer; a feed fan 12 installed in the communication pipe 11 to supply air; a combustion unit 13 connected to the second furnace 110; It further includes a burner 14 provided in the combustion unit 13, and uses the burner 14 and the feed pan 12 to ignite the waste wire stacked on the perforated plate W3 in the second furnace 110. It is possible to thermally decompose the waste synthetic resin containing
Among the connection pipes 15 connected in communication with the combustion furnace, the knife gate valve 16 is installed in the portion of the connection pipe 15 adjacent to the first furnace 100 and the second furnace 110, respectively, and connected to the controller. Safety device when generating overgas of the pyrolysis facility of waste synthetic resin, characterized in that it further comprises. delete delete According to claim 1,
A plurality of condensers (51, 52, 53, 54), respectively,
A plurality of condensing pipes (C2, C3, C4, C5) disposed at a distance from each other; and
It is disposed between the plurality of condensing pipes (C2, C3, C4, C5) and is disposed adjacent to the lower end of the upstream condensing pipe among the adjacent condensing pipes on both sides and in the vicinity of the upper end of the downstream condensing pipe among the both sides of the condensing pipe. A safety device when generating overgas of a pyrolysis facility for waste synthetic resin, characterized in that it includes a plurality of transmission pipes (t1, t2, t3, t4) connected to each other.

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