KR20160032803A - Apparatus and method for auto extinguishing fires of refused waste recycle plant - Google Patents

Apparatus and method for auto extinguishing fires of refused waste recycle plant Download PDF

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Publication number
KR20160032803A
KR20160032803A KR1020140122962A KR20140122962A KR20160032803A KR 20160032803 A KR20160032803 A KR 20160032803A KR 1020140122962 A KR1020140122962 A KR 1020140122962A KR 20140122962 A KR20140122962 A KR 20140122962A KR 20160032803 A KR20160032803 A KR 20160032803A
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South Korea
Prior art keywords
fire
crusher
gas
mist
waste
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KR1020140122962A
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Korean (ko)
Inventor
박찬성
이진기
이신택
고성기
김만수
정은호
이기배
Original Assignee
한국전자제품자원순환공제조합
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Priority to KR1020140122962A priority Critical patent/KR20160032803A/en
Publication of KR20160032803A publication Critical patent/KR20160032803A/en

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/04—Fire prevention, containment or extinguishing specially adapted for particular objects or places for dust or loosely-baled or loosely-piled materials, e.g. in silos, in chimneys
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
    • A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/04—Safety devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

The present invention relates to a device and a method to automatically extinguish a fire in a waste recycling facility and, more specifically, to a device and a method to automatically extinguish a fire in a waste recycling facility, capable of reducing accidents by recognizing a fire in a waste recycling process early and quickly suppressing the fire, improving productivity by minimizing congestion time for reoperation, and preventing a freezing phenomenon by using fire-extinguishing chemicals using CO2 gas.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fire extinguishing system and a fire extinguishing system,

The present invention relates to an automatic fire extinguishing system and method for a waste recycling facility, and more particularly, to a fire extinguishing system for a fire extinguishing system capable of evolving and suppressing fire generated in a crusher of a waste recycling facility through an automatic fire extinguishing system To an automatic fire extinguishing system and method.

As long as the current mass production, mass consumption and mass disposal-type economic societies continue, before the middle of this century, it is predicted that economic growth will be difficult due to the depletion of major natural resources and the lack of capacity of the waste treatment system. Therefore, the recycling of waste is emphasized in order to transfer the available resources and pleasant environment to the next generation and to sustain the development as much as possible.

Recycling of wastes not only facilitates disposal by reducing the amount of incineration or landfill, but also permits the substitution of natural resources.

In particular, after collection of household appliances, environmentally harmful substances such as chlorofluorocarbons (CFCs), which are the main cause of global warming, are collected and processed in an environmentally friendly manner, and then processed through disassembly, disassembly, The waste is separated and the separated waste is supplied as raw material for other industries.

Therefore, recycling is a very important task in terms of protecting the environment and efficient use of resources, and it is an essential activity for a pleasant and beautiful environment and convenient and affluent life. However, most of them are recycled depending on landfill and incineration. If the waste is not properly treated, air, soil and water quality will be seriously polluted. In particular, chlorofluorocarbons (CFCs) contained in refrigeration refrigerants and blowing agents in household appliances are destructive to the earth's ozone layer.

Generally, the recycling of household appliances that have reached the end of their life time involves manually separating motors, transformers, and wires, breaking them in a crusher, separating iron from a magnetic separator, and separating non-ferrous metals and plastics such as copper and aluminum . Once the separation by material is completed, the general waste is separated from the general waste and recyclable raw materials, and the recyclable raw materials are recycled as raw materials for other industries.

Looking at the recycling process of raw materials, it is necessary to recycle the household appliances that are discarded through various processes. For example, if the refrigerator to be disposed is placed on a workbench, the first stage of the process, that is, the manual stage, begins. In the first step, rubber, glass, plastic, and the like are removed after disassembling parts (motor, electric wire, transformer, compressor, etc.) which can be manually removed.

In a refrigerator in which various components and recyclable materials are disassembled by hand, the chlorofluorocarbon (CFC) used as a refrigerant is recovered by a refrigerant recovery facility. At this time, the chlorofluorocarbon (CFC) is recovered by the refrigerant gas suction device provided in the refrigerant recovery facility. The recovered refrigerant is stored in a separate storage tank.

After the refrigerant has been recovered, the refrigerator moves along the operation line (conveyor, etc.) to the crushing stage, which is the second stage. And in the second step, it is crushed to a small size by the crusher.

Inside the crusher, a cutter having a rotary blade and a fixed blade is provided.

When the refrigerator is crushed by the crusher, the foaming agent used as a heat insulating material of the refrigerator, the metal material formed to surround the foaming agent, and the plastic formed on the inside and the outside of the refrigerator are simultaneously crushed by the cutter having the rotary blade and the fixed blade do.

A combustible gas contained in the foamed material is generated inside the crusher as the foamed material is crushed. At the point where the rotating blade and the fixed blade are engaged with each other, the concentration of the combustible gas is highest.

The refrigerator crushed by the cutter moves along the operation line and moves to the crushing step as the third step. In the third step, it is finely pulverized by a pulverizer. The process of passing through the crusher is a process of crushing the refrigerator to facilitate separation and improve the purity. The crusher is, of course, a crusher finer than the crusher.

When the process of the third step is completed, the process moves along the operation line to the ferrous separation step as the fourth step. The refrigerator crushed in the third step is separated into a metallic material having an iron component and a non-metallic material having no iron component in the fourth step.

In the fourth step, the metal material is separated from the crushed refrigerator by the magnetic separator.

The magnetic separator separates the iron-containing metal material and the non-iron-containing non-metallic material in the refrigerator by using the property that the iron component reacts with magnetism.

On the other hand, most of the polyurethane used as a heat insulating material of the refrigerator is mostly separated in the second stage crushing step, and the polyurethane is collected in the form of small particles or powder even in other processes.

Recycled materials that are separated through recycling processes are used as raw materials for other industries, and materials that can not be recycled are treated as garbage.

However, the above-described conventional techniques have the following problems.

As described above, in the recycling process of the related art, the rotating blade provided inside the crusher and the crusher are engaged with the fixed blade, and friction occurs with the steel plate to generate a spark. Then, static electricity is generated by friction of the heat insulating materials to be cut.

There is a problem that frequent fire occurs in the crushing equipment and the crushing equipment during the recycling process due to the static electricity due to the friction between the spark and the heat insulating material generated between the steel plate and the cutter.

In the event of such a fire, the facility operator must visually confirm the occurrence of fire and evolve the fire. As a result, the fire can not be secured due to the fact that it can not secure the golden time for evolving the initial fire. And it takes time to reactivate the recycling system after the fire evolves, so that there is a problem of a decrease in the production amount.

On the other hand, water, which is a fire extinguishing agent used in the fire evolution, affects the post-process, which causes problems in restarting.

Korean Registered Patent No. 0743740 (2007.07.23)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to early recognize the fire occurring during the waste recycling process and to rapidly evolve the fire.

In order to accomplish the above object, a fire extinguishing system for a waste recycling plant according to the present invention comprises: an upper chamber provided with a cutter; a crusher including a chamber formed of a lower chamber on which a conveyor is installed on a conveyance passage for conveying waste; ; A sensor installed inside the chamber of the crusher to detect occurrence of fire; A CO 2 injection nozzle installed to inject CO 2 gas when a fire occurs in the chamber of the crusher; And warning means for outputting a warning light and a warning sound in accordance with whether or not the inside of the chamber of the crusher is fired to selectively inform fire and evolution.

According to the present invention, there is provided a waste inlet of the crusher and a partition wall installed in the waste conveyance passage to selectively open and close the inlet and the conveyance passage depending on whether a fire occurs or not.

According to the present invention, the CO 2 injection nozzle is installed to inject from the upper chamber toward the cutter, and is arranged to inject onto the lower chamber above the conveyor.

According to the present invention, the mist spraying unit may further include a mist spraying unit that selectively injects water in a mist form when CO 2 gas is sprayed through the CO 2 spray nozzle. Wherein CO 2 is the mist supply pipe connected to the injection nozzle injecting the CO 2 gas or a mist and can be configured may be able to operate for injecting the mixed CO 2 gas as an optional, before the mist into the side of the CO 2 injection nozzle the spray nozzle is installed, the mist is injected through the mist ejection nozzle may be configured to be spread with the CO 2 in the CO 2 gas injected spray nozzle.

A method for automatic fire extinguishing of a waste recycling facility according to the present invention comprises a first step of detecting the occurrence of a fire inside a chamber of a crusher through a detection sensor, A second step of automatically stopping the operation of the crusher; A third step of injecting CO 2 gas through the CO 2 injection nozzle to attempt to evolve the fire; A fourth step of detecting whether or not the fire has evolved through the detection sensor; And a fifth step of injecting the CO 2 gas and the mist together in the failure of the fire evolution to attempt evolution.

According to the present invention, further, the partition wall blocks the inlet port through which the waste is drawn into the crusher and the conveyance passage carried to the outside between the second step and the third step.

According to the present invention, the step of detecting the fire evolution in the fourth step and the step of spraying the CO 2 gas and the mist in the fifth step are attempted repeatedly several times.

According to the apparatus and method for automatically extinguishing a fire in a waste recycling facility according to the present invention having the above-described structure, it is possible to recognize a fire occurring during a waste recycling process at an early stage and to evolve it quickly, So that the stagnation time for restarting can be minimized, and the productivity can be improved.

In addition, since CO 2 is used as a main fire-fighting agent in the event of fire suppression, it is possible to prevent the crushed material from being wetted with water to prevent the post-process and the freezing phenomenon during the winter season.

1 is a schematic view showing an automatic fire extinguishing system of a waste recycling facility according to the present invention.
2 is a block diagram showing the overall structure of a fire extinguisher of a waste recycling facility according to the present invention.
FIG. 3 is a flow chart showing an entire process of an automatic fire extinguishing system for a waste recycling facility according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of an automatic fire extinguishing system for a waste recycling facility according to the present invention, which shows a crusher 10 for crushing waste in a waste recycling process.

In the present invention, the crusher of the waste recycling equipment together with the crusher is the most vulnerable to fire occurrence.

The shredder 10 according to the present invention is generally provided with a chamber 11 provided with a cutter 12 including a rotating blade and a fixed blade and a conveyor 13 for conveying the pulverized waste, An upper chamber 11a in which the cutter 12 is installed and a lower chamber 11b in which the conveyor 13 is installed.

A flame detection sensor 14 is installed in the upper and lower chambers 11a and 11b for detecting the fire environment such as flame or flame caused by the impact between the cutter 12 or the waste.

Here, the fire detection signal inputted through the flame detection sensor 14 is outputted to the control device 20, and the control device 20 judges that the fire is generated by the flame detection sensor 14, (10). The partition wall 15a provided on the upper inlet side of the crusher 10 slides in the left and right direction to block the inlet port and the partition wall 15b which is openably and closably installed in the outlet conveyance passage of the crusher 10, Slide the slide to shut off the transport passage of the waste. The partition walls 15a and 15b are cut off from the inside of the crusher 10 to improve the digestion effect. Particularly, the conveyor 13 is installed in the exit conveyance passage of the crusher 10 to continuously convey the crushed material. The partition wall 15 blocking the outlet conveyance passage of the crusher 10 functions to prevent the fire from spreading to the crushed material conveyed through the conveyor 13.

Further, a CO 2 injection nozzle 16 installed in the crusher 10 for dispersing CO 2 gas when a fire occurs inside the crusher 10 is provided.

The CO 2 gas is supplied through a supply pipe (not shown) while being stored in a separate storage tank.

The CO 2 injection nozzle 16 is installed to inject CO 2 gas toward a cutter installed downward from the upper chamber 11 a and inject CO 2 gas toward the conveyor 12 from the lower chamber 11 b Respectively.

The CO 2 injection nozzle 16 may be installed at various positions other than the positions described above.

A warning means 17 is provided for detecting the occurrence or non-occurrence of fire through the flame detection sensor 14 and outputting a warning light and a warning sound to inform the surrounding people of the occurrence of fire and the evolution of fire.

The CO 2 CO 2 gas is injected through the injection nozzle 16 is increased by about 1.5 times because it is a heavy gas, standing sinks down the injected CO 2 gas fire extinguishing effect than air. In addition, CO 2 gas is a gas at room temperature but is liquefied when pressure is applied. Therefore, it is stored in a high-pressure gas container in liquefied state. In addition, since the liquid CO 2 gas has a very high self-vapor pressure, it is advantageous that the liquid CO 2 gas can be sprayed by its own pressure without the help of another pressure source.

In this way, when the CO 2 gas is injected through the CO 2 injection nozzle 16 and the fire inside the crusher 10 is evolved, the flame detection sensor 14 detects whether or not the fire has evolved.

If it is determined through the flame sensor 14 that the fire has completely evolved, the warning means 17 is operated to notify people around the fire that the fire has completely evolved. When the facility operator determines that the fire evolution is completed by the flame detection sensor 14, the facility operator checks the condition of the crusher 10 and restarts the crusher 10 if it is determined to be a normal condition do.

Therefore, since the expansion of the fire generated in the crusher 10 is prevented beforehand, it is possible to immediately restart the operation without the stagnation time, thereby preventing the productivity from being lowered.

On the other hand, when it is determined through the flame detection sensor 14 that the fire has not evolved, the warning means 17 is operated to notify the surrounding people that the fire has not completely evolved. At this time, the warning means 17 can be selected by differentiating the warning light and the warning sound according to the evolution of the fire.

When the fire has not completely evolved through the flame detection sensor 14, the CO 2 injection nozzle 16 is driven by the control signal of the control device 20 so that the CO 2 gas is injected again.

According to the present invention, the flame detection sensor 14 is installed in various places in the crusher 10, and the CO 2 injection nozzle 16 can be installed so that the injection direction of CO 2 gas can be adjusted. Accordingly, when the flame detection sensor 14 accurately determines the fire remaining region in the crusher 10 and transmits a signal related to the fire residue region to the control device 20, the control device 20 determines the injection position of the CO 2 gas, The CO 2 gas can be injected while adjusting the injection direction of the two injection nozzles 16.

According to the present invention, when the flame detection sensor 14 detects that the initial evolution has failed, it is possible to spray the water together with the CO 2 gas in a mist form. To this end, a mist feed pipe 16a is connected to the CO 2 injection nozzle 16. The mist may be injected through a separate injection nozzle, but in this case the mist nozzle is installed to spray the mist to the front side of the CO 2 injection nozzle 16. Thus, the mist is mixed with the CO 2 gas injected from the CO 2 injection nozzle 16 and diffused. When the CO 2 gas and the mist are injected at the same time, the ambient temperature can be lowered and the digestion effect can be enhanced by using only the CO 2 gas. In addition, when mixed with CO 2 gas and mist, it is not evaporated due to residual heat, and even when some moisture remains, the freezing point is lowered, so that freezing does not occur during the winter season, minimizing the influence on the post-process of the waste recycling process.

That is, according to the present invention, since the fire is suppressed by using only CO 2 during the initial evolution, it is possible to solve the problem that the debris is wetted with water and obstructs the post-process, and even when the mist is sprayed together with the mist, It is possible to spray a small amount of water that can evaporate water into a mist form to evolve and thus it is possible to prevent the influence on the post-process and to minimize the influence on the post-process even if some moisture remains .

According to the present invention, the flame detection sensor 14 determines whether or not the fire has evolved by repeatedly performing a plurality of times so that the fire evolution inside the crusher 10 can be performed more efficiently, The automatic fire extinguishing system of the present invention is operated.

The detection operation of the detection sensor 14 according to the embodiment of the present invention, the opening and closing operations of the partition walls 15a and 15b, the injection operation of the CO 2 injection nozzle 16, the warning operation of the warning means 17, It is natural that it is controlled by the control signal of the device 20. [ Then, the setting time of the operation, such as the CO 2 injection nozzle (16), CO 2 gas mixture in the spray mist and the CO 2 gas injected by via the timer 18 that operates by a control signal of a control device 20 Can be set.

Although the embodiment of the present invention has been described in terms of a system for preventing fire inside the crusher 10, the present invention is not limited thereto. The present invention can be applied to a crusher having the same working principle as the crusher 10.

Thus, the invention at the same time to block the crusher 10, the partition wall (15a, 15b) the inside case of fire in the waste, the flame sensor (14) for rapidly automatically detects the fire through the crusher 10 in the CO 2 The gas can be injected and the fire can be evolved early.

As a result, safety accidents caused by fire can be reduced, productivity can be improved by minimizing stagnation time associated with re-operation, and CO 2 gas can be used to prevent freezing in winter.

On the other hand, even when a fire occurs, a manual operation function of the fire extinguisher is manually provided so that the driver can manually extinguish the fire when an error that can not be detected by the flame sensor 14 occurs. .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It should be understood that various modifications made by the person skilled in the art are also within the scope of protection of the present invention.

10: Crusher 11: Chamber
12: Cutter 13: Conveyor
14: Detection sensor 15a, 15b:
16: injection nozzle 17: warning means
18: timer 20: control device

Claims (9)

A crusher including a chamber made up of an upper chamber provided with a cutter and a lower chamber provided with a conveyor on a conveyance passage for conveying waste;
A sensor installed inside the chamber of the crusher to detect occurrence of fire;
A CO 2 injection nozzle installed to inject CO 2 gas when a fire occurs in the chamber of the crusher; And
And an alarm means for outputting a warning light and a warning sound according to whether or not the inside of the chamber of the crusher is fired to selectively inform fire and evolution. The method according to claim 1,
Further comprising a partition wall installed at a waste inlet of the crusher and a waste transport passage for selectively opening and closing the inlet and the transport passage depending on whether a fire occurs or not. The method according to claim 1,
Wherein the CO 2 injection nozzle is installed to spray from the upper chamber toward the cutter and to inject the CO 2 injection nozzle from the lower chamber toward the conveyor.

The method according to claim 1,
Further comprising means for selectively injecting water in the form of mist when CO 2 gas is injected through the CO 2 injection nozzle. 5. The method of claim 4,
Said CO 2 jet nozzle has a mist supply pipe is connected to the injection of CO 2 gas or mist mixed with fire sprinkler system of a waste recycling plant, characterized in that the operation can be configured to selectively injecting the CO 2 gas. 5. The method of claim 4,
The CO is around toward the mist ejection nozzle of the second injection nozzle is provided, the mist sprayed by the mist spray nozzle is fire automatically the waste recycling plant, characterized in that adapted to be spread with a CO 2 gas injected from the CO 2 injection nozzle Fire extinguisher. A method for automatic fire extinguishing of a waste recycling plant,
A first step of detecting the occurrence of a fire inside the chamber of the crusher through the detection sensor;
A second step of automatically stopping the operation of the crusher;
A fourth step of injecting CO 2 gas through the CO 2 injection nozzle to attempt to evolve the fire;
A fifth step of detecting whether or not the fire is evolved through the detection sensor; And
And a sixth step of spraying the CO 2 gas and the mist together to attempt to evolve in the event of failure of fire evolution. 8. The method of claim 7,
Further comprising the step of blocking the partition between the inlet port through which the waste is drawn into the crusher and the conveyance passage carried to the outside between the second step and the third step. 8. The method of claim 7,
Wherein the step of detecting the fire evolution in the fifth step and the step of spraying the CO 2 gas and mist in the sixth step together with the step of evolving are repeatedly performed a plurality of times.
KR1020140122962A 2014-09-16 2014-09-16 Apparatus and method for auto extinguishing fires of refused waste recycle plant KR20160032803A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018171313A (en) * 2017-03-31 2018-11-08 能美防災株式会社 Fire extinguishing installation
KR102234900B1 (en) * 2020-08-26 2021-04-01 주식회사 파이어시스 High pressure extinguishing gun for Fire extinguishing
KR102501231B1 (en) 2022-01-19 2023-02-21 노명국 Waste storage system with nitrogen purge apparatus to prevent fire in waste storage tank
KR20240045148A (en) * 2022-09-29 2024-04-05 주식회사 영풍 Apparatus for pre-treating used battery and method of pre-treating used battery using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018171313A (en) * 2017-03-31 2018-11-08 能美防災株式会社 Fire extinguishing installation
KR102234900B1 (en) * 2020-08-26 2021-04-01 주식회사 파이어시스 High pressure extinguishing gun for Fire extinguishing
KR102501231B1 (en) 2022-01-19 2023-02-21 노명국 Waste storage system with nitrogen purge apparatus to prevent fire in waste storage tank
KR20240045148A (en) * 2022-09-29 2024-04-05 주식회사 영풍 Apparatus for pre-treating used battery and method of pre-treating used battery using the same

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