JP2008275179A - Combustion system of flame retardant high-viscosity waste such as pcb - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems in a conventional combustion (treatment) system of a flame-retardant high-viscosity waste such as PCB which is mainly treated by chemical decomposition treatment technology that the chemical treatment method needs a large amount of initial running costs, on the other hand, an incineration treatment method is difficult in removal of a harmful substance in an exhaust gas, in particular, tar, so that it is difficult to actually execute the method, and agreement of residents of a construction area and/or its environment can not be obtained. <P>SOLUTION: This combustion system of flame-retardant high-viscosity waste such as PCB is composed of a crusher for crushing an electric device incorporating PCB, a viscosity adjustment separating device for separating the crushed electric device and PCB, lowering the viscosity of PCB and performing separating treatment under a negative pressure, a main combustion chamber connected through a temperature retaining pipe disposed in the viscosity adjustment separating device, a deposit burner connected through a pipe disposed in the viscosity adjustment separating device, and an exhaust gas temperature decreasing chamber receiving exhaust gases of the main combustion chamber and the deposit burner. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a (detoxification) combustion system for flame-retardant high-viscosity waste such as PCB for separating and processing PCB contained in electric equipment.

  Conventional high-viscosity waste combustion (processing) systems such as PCBs are mainly processed by chemical decomposition processing technology. However, this chemical treatment method requires a large amount of initials and running costs. On the other hand, the incineration treatment method is difficult to implement because it is difficult to remove harmful substances in exhaust gas, especially tar, and the consent of the construction site and / or surrounding residents cannot be obtained. There's a problem.

  And as a prior art document, Japanese Patent Application Laid-Open No. 2003-134895 “Renewable Energy Gas / Heat Combined Supply System, Wide Area Gas / Heat Combined Energy Supply System Concentrated on a Unit Scale on These Units, and its Network System” There is. According to the disclosure of the present invention, in [Claim 13], “in the invention described in Claims 1 to 12, the mineralization by the thermal decomposition effect of the hydrogen-oxygen mixed gas, which is the characteristic of Brown gas, produces industrial waste and the environment. Although there is a disclosure of "combustion system for detoxifying waste using an incinerator or the like having the ability to decompose pollutants such as dioxin and PCB", the specific explanation is not disclosed sufficiently. can not understand.

JP2003-134895

  The conventional chemical treatment method or incineration treatment method has advantages and disadvantages, and there is a need for an improvement thereof and a non-polluting treatment method for flame retardant high-viscosity waste such as PCB, which is intended by the present invention. Yes. In addition, there is an urgent need for a method for treating such a flame-retardant high-viscosity waste such as PCB, in which no accident occurs.

  In view of the above, the present invention heats a PCB built in an electric device or the like, oil mud containing PCB, high-viscosity waste oil, etc. at an appropriate temperature (approximately 80 ° C. to 100 ° C.) to reduce its viscosity, To separate. And while maintaining this viscosity, it is completely incinerated with a heat source such as a spray outlet jet burner (wide-angle injection from the spray outlet expands the contact area with air and complete combustion), so that organic substances such as soot tar Provided is a combustion system for flame-retardant high-viscosity waste such as PCB that does not occur.

  For example, PCBs are still attached to the crushed electrical equipment generated during the above combustion system, so it is transferred to a deposit combustion furnace in a separate chamber and heated with a normal oil burner. Incinerate (rotary kiln-type deposit combustion furnace). At this time, since unburned gas such as “graphite tar” is generated in the combustion gas, it is heated and oxidized in a honeycomb type oxidation (combustion) furnace to make it harmless.

  Regarding the treatment of exhaust gas, PCB consists of carbon (C), hydrogen (H), and chlorine (CL). Therefore, the exhaust gas after treatment is rich in chlorine gas and intended to further eliminate pollution, and it is desirable to neutralize chemicals including treatment of dioxins, nitrogen oxides and the like.

  Furthermore, pay attention to negative pressure at least for the crusher, viscosity regulating and separating device, main combustion chamber, deposit combustion furnace, exhaust gas reduction greenhouse, piping, etc., adopting a batch system, preventing PCB scattering and making pollution-free. To avoid gas leaks.

  According to the first aspect of the present invention, a PCB, an oil mud containing PCB, a high viscosity waste oil, etc. contained in an electric device such as a transformer, a condenser, a cooler, and a refrigerator are heated at an appropriate temperature (approximately 80 ° C. to 100 ° C.). Reduce the viscosity and separate. And, while maintaining this viscosity, completely incinerate with a heat source such as a spray outlet jet burner (wide-angle injection from the spray outlet expands the contact area with air and complete combustion), soot tar (graphite tar) The present invention provides a combustion system for flame-retardant high-viscosity waste such as PCB that does not generate organic substances such as PCB.

  The invention of claim 1 relates to the treatment of exhaust gas, and the PCB in the exhaust gas is composed of carbon (C), hydrogen (H) and chlorine (CL). Accordingly, the exhaust gas after treatment is rich in chlorine gas, and is intended to further eliminate pollution, and is intended to neutralize chemicals including treatment of dioxins, nitrogen oxides, and the like.

Claim 1 is a crusher that crushes an electrical device containing a PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment and the PCB connected to the crusher and separates the PCB in a negative pressure state by reducing the viscosity of the PCB;
A hot air generating furnace and / or a temperature control furnace for supplying hot air (exhaust gas temperature of about 80 ° C. to 100 ° C.) to the viscosity adjusting separation device;
A main combustion chamber provided continuously through a heat insulation pipe provided in the viscosity adjusting and separating device;
In addition, a deposit combustion furnace connected through a pipe provided in the viscosity adjusting and separating apparatus,
This is a combustion system for flame-retardant high-viscosity waste such as PCB composed of the main combustion chamber and an exhaust gas-reducing greenhouse that contains exhaust gas from the deposit combustion furnace.

  The invention of claim 2 is intended to achieve the object of claim 1 and to provide an optimum deposit combustion furnace for achieving this object.

Claim 2 is a combustion system for flame-retardant high-viscosity waste such as PCB according to claim 1,
The deposit combustion furnace is a rotary kiln type, and the combustion hot gas from the main combustion chamber is used as an auxiliary heat source and burned with an oil burner. The temperature in the deposit combustion furnace is about 1,000 ° C. to 1 ° C. , 100 ° C. Flame retardant high viscosity waste combustion system such as PCB.

  The invention of claim 3 is intended to achieve the object of claim 1 and to provide an optimum main combustion chamber for achieving the object.

Claim 3 is a combustion system for flame retardant high-viscosity waste such as PCB according to claim 1,
The main combustion chamber is a fixed furnace batch type, and its combustion load value is approximately 70,000 (kcal / m ³ H) to 100,000 (kcal / m ³ H). This is a combustion system for flame-retardant high-viscosity waste such as PCBs having a configuration of 5,000 (kcal / kg).

  The invention of claim 4 is intended to achieve the object of claim 1 and to provide a method for treating exhaust gas from the main combustion chamber that is optimal for achieving this object.

Claim 4 is a combustion system for flame retardant high-viscosity waste such as PCB according to claim 1,
It is a combustion system for flame retardant high-viscosity waste such as PCB that can supply exhaust gas from the main combustion chamber to a deposit combustion furnace and / or an exhaust gas-reducing greenhouse through a three-way switching valve. .

  The invention of claim 5 is intended to achieve the object of claim 1 and to provide an optimum honeycomb type thermal oxidation furnace for achieving this object.

Claim 5 is a combustion system for flame retardant high-viscosity waste such as PCB according to claim 1,
It is a combustion system for flame-retardant high-viscosity waste such as PCB, which is configured to guide exhaust gas from the deposit combustion furnace to a honeycomb-type thermal oxidation furnace through a pipe.

  In the invention of claim 6, since, for example, the crushed electric equipment or the like generated in the middle of the combustion system is still attached to PCB, it is transferred to a deposit combustion furnace in a separate chamber, Heat and incinerate with an oil burner (rotary kiln-type deposit combustion furnace). At this time, since unburned gas such as “graphite tar” is generated in the combustion gas, it is intended to achieve detoxification by heating oxidation in a honeycomb type thermal oxidation (combustion) furnace.

  In addition, the invention of claim 6 adopts a batch method, paying attention to negative pressure at least for the crusher, the viscosity adjusting / separating device, the main combustion chamber, the deposit combustion furnace, the exhaust gas reducing greenhouse, the piping, etc. It is intended to provide a combustion system for flame retardant high-viscosity waste such as PCB that can prevent, make pollution-free, and avoid gas leakage.

Claim 6 is a crusher for crushing an electric device containing a PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment and the PCB connected to the crusher and separates the PCB in a negative pressure state by reducing the viscosity of the PCB;
A hot air generating furnace and / or a temperature control furnace for supplying hot air (exhaust gas temperature of about 80 ° C. to 100 ° C.) to the viscosity adjusting separation device;
A main combustion chamber provided continuously through a heat insulation pipe provided in the viscosity adjusting and separating device;
In addition, a deposit combustion furnace connected through a pipe provided in the viscosity adjusting and separating apparatus,
The main combustion chamber, an exhaust gas reducing greenhouse containing exhaust gas of the deposit combustion furnace, and / or a honeycomb type thermal oxidation furnace;
A catalytic denitration tower connected to the exhaust gas reducing greenhouse;
A dust collector and / or chimney connected to the catalyst denitration tower;
It is a combustion system for flame-retardant high-viscosity waste such as PCB composed of a waste-accommodating chamber connected to the deposit combustion furnace.

  The invention of claim 7 is intended to achieve the object of claim 6 and to provide a chimney and / or catalyst denitration tower facility optimal for achieving the object.

Claim 7 is a combustion system for flame-retardant high-viscosity waste such as PCB according to claim 6.
It is a combustion system for flame-retardant high-viscosity waste such as PCB, which is provided with a slaked lime silo and / or an activated carbon silo and can be supplied to the chimney and / or catalyst denitration tower facility.

The invention of claim 1 is a crusher for crushing an electric device containing a PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment connected to the crusher and the PCB, and lowers the viscosity of the PCB and separates it in a negative pressure state;
A hot air generating furnace and / or a temperature control furnace for supplying hot air (exhaust gas temperature of approximately 80 ° C. to 100 ° C.) to the viscosity adjusting separation device;
A main combustion chamber arranged continuously through a heat insulation pipe provided in the viscosity adjusting and separating device;
In addition, a deposit combustion furnace provided continuously through a pipe provided in the viscosity adjusting and separating apparatus,
This is a combustion system for flame-retardant high-viscosity waste such as PCB, which is composed of a main combustion chamber and an exhaust gas-reducing greenhouse that accommodates exhaust gas from the deposit combustion furnace.

  Accordingly, the first aspect of the present invention is to heat a PCB incorporated in an electric device such as a transformer, a condenser, a cooler, or a refrigerator, oil mud containing PCB, waste oil with high viscosity, etc. at an appropriate temperature (approximately 80 ° C. to 100 ° C.). Reduce the viscosity and separate. And while maintaining this viscosity, it is completely incinerated with a heat source such as a high pressure spray nozzle and burner (wide angle injection from the spray nozzle expands the contact area with the air and complete combustion), and soot tar (graphite A combustion system for flame-retardant high-viscosity waste such as PCB that does not generate organic matter such as tar can be provided.

  Claim 1 relates to the treatment of exhaust gas, and the PCB in the exhaust gas is composed of carbon (C), hydrogen (H) and chlorine (CL). Therefore, the exhaust gas after treatment is rich in chlorine gas and intended to further eliminate pollution, and provides a chemical neutralization treatment method including treatment of dioxins, nitrogen oxides and the like.

The invention of claim 2 is a combustion system for flame-retardant high-viscosity waste such as PCB according to claim 1,
The deposit combustion furnace is a rotary kiln type, and the combustion hot gas from the main combustion chamber is used as an auxiliary heat source and burned with an oil burner, and the temperature in the deposit combustion furnace is approximately 1,000 ° C. to 1,100 ° C. This is a combustion system for flame-retardant high-viscosity wastes such as PCBs.

  Accordingly, the second aspect has features such that the object of claim 1 can be achieved, and an optimum deposit combustion furnace can be provided to achieve the object.

The invention of claim 3 is a combustion system for flame-retardant high-viscosity waste such as PCB according to claim 1,
The main combustion chamber is a fixed furnace batch type, the combustion load value is approximately 70,000 (kcal / m ³ H) to 100,000 (kcal / m ³ H), and the calorific value of PCB is approximately 5,000 on average. This is a combustion system for flame-retardant high-viscosity waste such as PCB, which has a configuration of (kcal / kg).

  Accordingly, the third aspect has features such that the object of claim 1 can be achieved, and an optimum main combustion chamber can be provided to achieve the object.

Invention of Claim 4 is a combustion system of flame-retardant high-viscosity wastes, such as PCB of Claim 1,
This is a combustion system for flame-retardant high-viscosity waste such as PCB, which is configured to be able to supply the exhaust gas from the main combustion chamber to the deposit combustion furnace and / or the exhaust gas reduced greenhouse through a three-way switching valve.

  Therefore, claim 4 has the characteristics that the object of claim 1 can be achieved, and the method for treating the exhaust gas from the main combustion chamber that is optimal for achieving the object can be provided.

The invention of claim 5 is a combustion system for flame-retardant high-viscosity waste such as PCB according to claim 1,
This is a combustion system for flame-retardant high-viscosity waste such as PCB, in which exhaust gas from the deposit combustion furnace is guided to a honeycomb-type thermal oxidation furnace through a pipe.

  Accordingly, the fifth aspect has the characteristics that the object of the first aspect can be achieved and a honeycomb-type thermal oxidation furnace optimum for achieving the object can be provided.

The invention of claim 6 is a crusher for crushing an electric device containing a PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment connected to the crusher and the PCB, and lowers the viscosity of the PCB and separates it in a negative pressure state;
A hot air generating furnace and / or a temperature control furnace for supplying hot air (exhaust gas temperature of approximately 80 ° C. to 100 ° C.) to the viscosity adjusting separation device;
A main combustion chamber arranged continuously through a heat insulation pipe provided in the viscosity adjusting and separating device;
In addition, a deposit combustion furnace provided continuously through a pipe provided in the viscosity adjusting and separating apparatus,
A main combustion chamber, an exhaust gas reducing greenhouse containing exhaust gas from the deposit combustion furnace, and / or a honeycomb type thermal oxidation furnace;
A catalytic denitration tower connected to an exhaust gas greenhouse,
A dust collector and / or chimney connected to the catalyst denitration tower;
This is a combustion system for flame-retardant high-viscosity waste, such as PCB, composed of a waste storage chamber connected to the deposit combustion furnace.

  Therefore, since the PCB etc. are still adhering to, for example, the crushed electric equipment generated in the middle of the combustion system, it is transferred to the adhering material combustion furnace in a separate chamber, Heat and incinerate with an oil burner (rotary kiln-type deposit combustion furnace). At this time, since unburned gas such as graphite tar is generated in the combustion gas, it can be rendered harmless by heat oxidation in a honeycomb type thermal oxidation (combustion) furnace.

  In addition, claim 6 takes into account negative pressure at least for the crusher, the viscosity adjusting / separating device, the main combustion chamber, the deposit combustion furnace, the exhaust gas reduction greenhouse, the piping, etc. In addition, it is possible to provide a combustion system for flame-retardant high-viscosity waste such as PCB that can eliminate pollution and avoid gas leakage.

The invention of claim 7 is a combustion system for flame-retardant high-viscosity waste such as PCB according to claim 6,
It is a combustion system for flame-retardant high-viscosity waste such as PCB, which is provided with a slaked lime silo and / or an activated carbon silo and can be supplied to the chimney and / or catalyst denitration tower facility.

  Accordingly, the seventh aspect has characteristics such that the object of claim 6 can be achieved, and a chimney and / or a catalyst denitration tower facility optimal for achieving the object can be provided.

  Hereinafter, embodiments (forms) of the present invention will be described.

  FIG. 1 shows a part of a conceptual diagram of an example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. FIG. 2 shows another part of FIG. FIG. 3 shows a flowchart of another example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. 4 is a front view of a honeycomb type thermal oxidation furnace, FIG. 5 is a plan view of FIG. 4, FIG. 6 is a side view of FIG. 4, and FIG.

  Hereinafter, a description will be given with reference to the drawings. A flame-retardant high-viscosity waste such as PCB (referred to as waste 1) is introduced into a supply bunker 3 via a transport vehicle 2. This waste 1 is fed through a supply port 5 into a crusher 6 (such as a first crusher and / or a second crusher). Below the crusher 6, there is a viscosity adjusting / separating device 8 into which a crushing waste 100 in which a flame-retardant high-viscosity substance such as PCB is attached and / or accommodated is introduced. A stainless steel mesh conveyor 80 (conveyor 80) is arranged in two stages and transferred by the two-stage conveyor 80. In this transfer process, the PCB and the solid matter are separated. The traveling speed of the viscosity adjusting / separating device 8 is about 60 (cm / min) to 100 (cm / min). The temperature in the separation chamber of the viscosity adjusting / separating apparatus 8 is about 80 ° C. to 100 ° C., and the PCB that has flowed and dropped reaches the converging portion 81a from the receiving floor 81 made of a slippery stainless steel plate and is stored. The angle of the receiving floor 81 is approximately 15 ° C. to ensure a natural flow and eliminate the risk of power and ignition. In the figure, reference numeral 82 denotes a discharge port for solid PCB deposits. In the viscosity adjusting / separating apparatus 8, the PCB is reduced in viscosity and subjected to separation processing in a negative pressure state. The viscosity adjusting / separating device 8 includes a hot air generating furnace 8a and / or a temperature adjusting furnace 8b for supplying hot air (exhaust gas temperature of approximately 80 ° C. to 100 ° C.). Hot air from the hot air generating furnace 8a and / or the temperature adjusting furnace 8b is introduced from the entirety of the viscosity adjusting / separating device 8 and the lower part of the receiving floor 81 through a heat insulation pipe.

  In the figure, 9 indicates a blower, and 91 indicates a cited blower.

  The solid matter from the discharge port 82 of the viscosity adjusting / separating device 8 is guided to the deposit combustion furnace 10 via a heat retaining pipe (in the drawing, all the pipes are indicated by a one-dot chain line; the same applies hereinafter). This deposit combustion furnace 10 is of a rotary kiln type and uses combustion gas from a main combustion chamber, which will be described later, as an auxiliary heat source and burns in a normal oil burner 101. The temperature inside the deposit combustion furnace 10 is set to about 1 The temperature is about 1,000 to 1,100 ° C. Also in the deposit combustion furnace 10, the separation process is performed in a negative pressure state by reducing the viscosity of the PCB.

Further, the PCB from the converging portion 81a of the viscosity adjusting / separating device 8 is guided to the main combustion chamber 12 through a heat insulation pipe. The main combustion chamber 12 is a fixed furnace batch type, and the combustion load value is approximately 70,000 (kcal / m ³ H) to 100,000 (kcal / m ³ H). Incidentally, the calorific value of PCB is said to average approximately 5,000 (kcal / kg). Therefore, in the main combustion chamber 12 as well, the viscosity of the PCB is lowered and the combustion process is performed in a negative pressure state. In the figure, 13 is an injection and pressure type pressure burner installed horizontally in the center of the main combustion chamber 12, 14 is a control damper (oxygen regulator), and 15 is a strainer. Reference numeral 16 denotes an oil pump provided in the heat insulation pipe. In the figure, 1000 indicates a combustion burner.

  The unburned exhaust gas from the deposit combustion furnace 10 is guided to a thermal oxidation furnace 20 (honeycomb type graphite tar removal “combustion” device) which is a secondary combustion chamber through a heat insulation pipe. The thermal oxidation furnace 20 includes a honeycomb-type combustion section 200 (heat exchanger), and incomplete combustion such as unburned exhaust gas (unburned gas) and / or PCB from the deposit combustion furnace 10. The exhaust gas and / or graphite tar, dioxin, soot, dust, etc. (organic harmful substances) contained in the exhaust gas and / or PCB are completely burned in the honeycomb-type combustion section 200 to make no pollution. In the figure, 21 indicates a heating burner. That is, the combustion unit 200 loads a cylindrical refractory 200a into a gas passage flue, applies external heat to the cylindrical refractory 200a, red heats it, and recycles organic harmful substances through the secondary radiant heat. It is a device that burns. In the figure, 20a indicates an inlet for organic harmful substances (unburned gas), and 20b indicates an outlet for exhaust gas subjected to smokeless treatment. The thermal oxidation furnace 20 has a structure in which it is diffused and smoothly supplied in an expanded manner from the convergence portion toward the combustion portion 200 to achieve complete combustion. In the figure, reference numeral 22 denotes a door that opens and closes a mouth for discharging / cleaning solids or for maintenance. This cylindrical refractory 200a is used as an empty stacking method to facilitate replacement and installation, to make efficient use of radiant heat by utilizing an empty space, and in the cylindrical refractory 200a, A feature of reliable combustion through the reliable contact between the flowing organic harmful substance (exhaust gas) and the hot air of the heating burner 21 (exhaust of the exhaust gas) and the reliable heated red heat of the cylindrical refractory 200a. is there. And by making this cylindrical refractory 200a into a ring structure, for example, heating red heat can be reliably and smoothly achieved by the heating burner 21, and efficient heat exchange between the hot air and organic harmful substances can be achieved. The combustion oxidation system is achieved and is extremely effective.

  Further, the exhaust gas from the deposit combustion furnace 10 is guided to the exhaust gas reducing greenhouse 25 through a heat insulation pipe. Further, the exhaust gas from the main combustion chamber 12 is also led to the exhaust gas reducing greenhouse 25 through a heat insulation pipe. In the figure, reference numeral 26 denotes a three-way switching valve provided in the heat insulation pipe. Via the three-way switching valve 26, the exhaust gas from the deposit combustion furnace 10 and the main combustion chamber 12 is switched or mixed. In this exhaust gas reducing greenhouse 25, exhaust gas is showered and the temperature is reduced. Then, the temperature-reducing gas in the exhaust gas reducing greenhouse 25 reaches the catalyst denitration tower 30 via a pipe. Further, the temperature rising gas of the catalyst denitration tower 30 reaches the chimney 32 from the dust collector 31 via a pipe.

  In the figure, 35 indicates a slaked lime silo, and 36 indicates an activated carbon silo, and the slaked lime and / or activated carbon is conveyed to a place where the slaked lime and / or activated carbon is required via a pipe. The purpose is neutralization and deodorization.

  In the figure, reference numeral 40 denotes a solid yard, and 41 denotes an oil tank. This oil is sent to the burners 13 and 21 and the burner (not shown) of the deposit combustion furnace 10 for reuse.

  Further, reference numeral 44 in the figure denotes a harmful gas removing device employed in another example. And this harmful gas removal apparatus 44 is employable also in the above-mentioned example.

FIG. 1 shows a part of a conceptual diagram of an example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. FIG. 2 shows another part of FIG. FIG. 3 shows a flowchart of another example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. FIG. 4 shows a front view of a honeycomb type thermal oxidation furnace. FIG. 5 shows a plan view of FIG. FIG. 6 shows a side view of FIG. FIG. 7 shows a cross-sectional view of the main part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waste 100 Crushed waste 101 Oil burner 2 Transport vehicle 3 Supply bunker 5 Supply port 6 Crusher 8 Viscosity control separation device 80 Conveyor 81 Receiving floor 81a Converging part 82 Discharge port 8a Hot air generating furnace 8b Temperature control furnace 9 Blower 91 Invitation Cited blower 10 Deposit combustion furnace 1000 Combustion burner 12 Main combustion chamber 13 Pressure burner 14 Control damper 15 Strainer 16 Oil pump 20 Thermal oxidation furnace 200 Combustion section 200a Cylindrical refractory 20a Inlet 20b Outlet 21 Heating burner 22 Door 25 Exhaust gas Reduced greenhouse 26 Three-way switching valve 30 Catalyst denitration tower 31 Dust collector 32 Chimney 35 Slaked lime silo 36 Activated carbon silo 40 Yard 41 Oil tank 44 Toxic gas removal device

For example, PCBs are still attached to the crushed electrical equipment generated during the above combustion system, so it is transferred to a deposit combustion furnace in a separate chamber and heated with a normal oil burner. Incinerate (rotary kiln-type deposit combustion furnace). At this time, since unburned gas such as “ black smoke tar” is generated in the combustion gas, it is heated and oxidized in a honeycomb type oxidation (combustion) furnace to make it harmless.

According to the first aspect of the present invention, a PCB, an oil mud containing PCB, a high viscosity waste oil, etc. contained in an electric device such as a transformer, a condenser, a cooler, and a refrigerator are heated at an appropriate temperature (approximately 80 ° C. to 100 ° C.). Reduce the viscosity and separate. And while maintaining this viscosity, it is completely incinerated with a heat source such as a spray outlet jet burner (wide-angle injection from the spray outlet to expand the contact area with air and complete combustion), soot smoke ( black smoke tar) A combustion system for flame-retardant high-viscosity waste such as PCB that does not generate organic matter such as

In the invention of claim 6, since, for example, the crushed electric equipment or the like generated in the middle of the combustion system is still attached to PCB, it is transferred to a deposit combustion furnace in a separate chamber, Heat and incinerate with an oil burner (rotary kiln-type deposit combustion furnace). At this time, since unburned gas such as “ black smoke tar” is generated in the combustion gas, it is intended to achieve detoxification by heating oxidation in a honeycomb type thermal oxidation (combustion) furnace.

Accordingly, the first aspect of the present invention is to heat a PCB incorporated in an electric device such as a transformer, a condenser, a cooler, or a refrigerator, oil mud containing PCB, waste oil with high viscosity, etc. at an appropriate temperature (approximately 80 ° C. to 100 ° C.). Reduce the viscosity and separate. While maintaining this viscosity, it is completely incinerated with a heat source such as a high-pressure spray nozzle and burner (wide-angle injection from the spray nozzle expands the contact area with air and complete combustion), soot tar ( black It is possible to provide a combustion system for flame-retardant high-viscosity waste such as PCB, which does not generate organic matter such as smoke tar).

Therefore, since the PCB etc. are still adhering to, for example, the crushed electric equipment generated in the middle of the combustion system, it is transferred to the adhering material combustion furnace in a separate chamber, Heat and incinerate with an oil burner (rotary kiln-type deposit combustion furnace). At this time, since unburned gas such as black smoke tar is generated in the combustion gas, it can be rendered harmless by heat oxidation in a honeycomb type thermal oxidation (combustion) furnace.

The unburned exhaust gas from the deposit combustion furnace 10 is guided to a thermal oxidation furnace 20 (honeycomb type black smoke tar removal “combustion” device) which is a secondary combustion chamber via a heat insulation pipe. The thermal oxidation furnace 20 includes a honeycomb-type combustion section 200 (heat exchanger), and incomplete combustion such as unburned exhaust gas (unburned gas) and / or PCB from the deposit combustion furnace 10. Therefore, black smoke tar, dioxin, soot, dust, etc. (organic harmful substances) contained in this exhaust gas and / or PCB, etc. are completely burned in the honeycomb-type combustion section 200 to make no pollution. In the figure, 21 indicates a heating burner. That is, the combustion unit 200 loads a cylindrical refractory 200a into a gas passage flue, applies external heat to the cylindrical refractory 200a, red heats it, and recycles organic harmful substances through the secondary radiant heat. It is a device that burns. In the figure, 20a indicates an inlet for organic harmful substances (unburned gas), and 20b indicates an outlet for exhaust gas subjected to smokeless treatment. The thermal oxidation furnace 20 has a structure in which it is diffused and smoothly supplied in an expanded manner from the convergence portion toward the combustion portion 200 to achieve complete combustion. In the figure, reference numeral 22 denotes a door that opens and closes a mouth for discharging / cleaning solids or for maintenance. This cylindrical refractory 200a is used as an empty stacking method to facilitate replacement and installation, to make efficient use of radiant heat by utilizing an empty space, and in the cylindrical refractory 200a, A feature of reliable combustion through the reliable contact between the flowing organic harmful substance (exhaust gas) and the hot air of the heating burner 21 (exhaust of the exhaust gas) and the reliable heated red heat of the cylindrical refractory 200a. is there. And by making this cylindrical refractory 200a into a ring structure, for example, heating red heat can be reliably and smoothly achieved by the heating burner 21, and efficient heat exchange between the hot air and organic harmful substances can be achieved. The combustion oxidation system is achieved and is extremely effective.

  The present invention relates to a (detoxification) combustion system for flame-retardant high-viscosity waste such as PCB for separating and processing PCB contained in electric equipment.

  Conventional high-viscosity waste combustion (processing) systems such as PCBs are mainly processed by chemical decomposition processing technology. However, this chemical treatment method requires a large amount of initials and running costs. On the other hand, the incineration treatment method is difficult to implement because it is difficult to remove harmful substances in exhaust gas, especially tar, and the consent of the construction site and / or surrounding residents cannot be obtained. There's a problem.

  And as a prior art document, Japanese Patent Application Laid-Open No. 2003-134895 “Renewable Energy Gas / Heat Combined Supply System, Wide Area Gas / Heat Combined Energy Supply System Concentrated on a Unit Scale on These Units, and its Network System” There is. According to the disclosure of the present invention, in [Claim 13], “in the invention described in Claims 1 to 12, the mineralization by the thermal decomposition effect of the hydrogen-oxygen mixed gas, which is the characteristic of Brown gas, produces industrial waste and the environment. Although there is a disclosure of "combustion system for detoxifying waste using an incinerator or the like having the ability to decompose pollutants such as dioxin and PCB", the specific explanation is not disclosed sufficiently. can not understand.

JP2003-134895

  The conventional chemical treatment method or incineration treatment method has advantages and disadvantages, and there is a need for an improvement thereof and a non-polluting treatment method for flame retardant high-viscosity waste such as PCB, which is intended by the present invention. Yes. In addition, there is an urgent need for a method for treating such a flame-retardant high-viscosity waste such as PCB, in which no accident occurs.

  In view of the above, the present invention heats a PCB built in an electric device or the like, oil mud containing PCB, high-viscosity waste oil, etc. at an appropriate temperature (approximately 80 ° C. to 100 ° C.) to reduce its viscosity, To separate. And while maintaining this viscosity, it is completely incinerated with a heat source such as a spray outlet jet burner (wide-angle injection from the spray outlet expands the contact area with air and complete combustion), so that organic substances such as soot tar Provided is a combustion system for flame-retardant high-viscosity waste such as PCB that does not occur.

  For example, PCBs are still attached to the crushed electrical equipment generated during the above combustion system, so it is transferred to a deposit combustion furnace in a separate chamber and heated with a normal oil burner. Incinerate (rotary kiln-type deposit combustion furnace). At this time, since unburned gas such as “black smoke tar” is generated in the combustion gas, it is heated and oxidized in a honeycomb type oxidation (combustion) furnace to make it harmless.

  Regarding the treatment of exhaust gas, PCB consists of carbon (C), hydrogen (H), and chlorine (CL). Therefore, the exhaust gas after treatment is rich in chlorine gas and intended to further eliminate pollution, and it is desirable to neutralize chemicals including treatment of dioxins, nitrogen oxides and the like.

  Furthermore, pay attention to negative pressure at least for the crusher, viscosity regulating and separating device, main combustion chamber, deposit combustion furnace, exhaust gas reduction greenhouse, piping, etc., adopting a batch system, preventing PCB scattering and making pollution-free. To avoid gas leaks.

  According to the first aspect of the present invention, a PCB, an oil mud containing PCB, a high viscosity waste oil, etc. contained in an electric device such as a transformer, a condenser, a cooler, and a refrigerator are heated at an appropriate temperature (approximately 80 ° C. to 100 ° C.). Reduce the viscosity and separate. And while maintaining this viscosity, it is completely incinerated with a heat source such as a spray outlet jet burner (wide-angle injection from the spray outlet to expand the contact area with air and complete combustion), soot smoke (black smoke tar) A combustion system for flame-retardant high-viscosity waste such as PCB that does not generate organic matter such as

The invention of claim 1 relates to the treatment of exhaust gas, and the PCB in the exhaust gas is composed of carbon (C), hydrogen (H) and chlorine (CL). Accordingly, the exhaust gas after treatment is rich in chlorine gas, and is intended to further eliminate pollution, and is intended to neutralize chemicals including treatment of dioxins, nitrogen oxides, and the like.
Further, the invention of claim 1 is that this thermal oxidation furnace uses a cylindrical refractory as an empty stacking system, facilitates replacement and installation, uses an empty space, and efficiently utilizes radiant heat, Through this tubular refractory, through the reliable contact of flowing organic harmful substances (exhaust gas) with hot air from the heating burner (exhaust of exhaust gas), and the reliable heating red heat of the tubular refractory It is intended to ensure combustion.

Claim 1 is a crusher that crushes an electrical device containing a PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment and the PCB connected to the crusher and separates the PCB in a negative pressure state by reducing the viscosity of the PCB;
A hot air generating furnace and / or a temperature adjusting furnace for supplying hot air to the viscosity adjusting and separating apparatus;
A main combustion chamber that is connected to the viscosity adjusting / separating device through a heat insulation pipe and maintains the viscosity of the PCB generated by the viscosity adjusting / separating device and burns the PCB ;
In addition, a deposit combustion furnace connected through a pipe provided in the viscosity adjusting and separating apparatus,
A tubular refractory (smoke) connected to the deposit combustion furnace is assembled by an empty stacking method, and a honeycomb-type thermal oxidation furnace constituting an empty stacking space in the tubular refractory,
It is a combustion system for flame-retardant high-viscosity waste such as PCB composed of the main combustion chamber and an exhaust gas reducing greenhouse for storing the exhaust gas of the deposit combustion furnace.

The invention of claim 2 is intended to achieve the object of claim 1 and to provide a method for treating exhaust gas from the main combustion chamber that is optimal for achieving this object.

Claim 2 is a combustion system for flame-retardant high-viscosity waste such as PCB according to claim 1,
It is a combustion system for flame retardant high-viscosity waste such as PCB that can supply exhaust gas from the main combustion chamber to a deposit combustion furnace and / or an exhaust gas-reducing greenhouse through a three-way switching valve. .

The invention of claim 3 is intended to achieve the object of claim 1 and to provide a honeycomb-type thermal oxidation furnace optimum for achieving the object.

Claim 3 is a combustion system for flame retardant high-viscosity waste such as PCB according to claim 1,
The exhaust gas from the deposit combustion furnace is a honeycomb-type thermal oxidation that forms an empty space in this cylindrical refractory, in which the cylindrical refractory (smoke) is freely and easily assembled by an empty stacking method. It is a combustion system for flame-retardant high-viscosity waste such as PCB, which is configured to be guided to a furnace through piping.

In the invention of claim 4, since , for example, the crushed electrical equipment or the like produced in the middle of the combustion system is still attached with PCB or the like, it is transferred to a deposit combustion furnace in a separate chamber, Heat and incinerate with an oil burner (rotary kiln-type deposit combustion furnace). At this time, since unburned gas such as “black smoke tar” is generated in the combustion gas, it is intended to achieve detoxification by heating oxidation in a honeycomb type thermal oxidation (combustion) furnace.

In addition, the invention of claim 4 uses a batch system, paying attention to the negative pressure at least for the crusher, the viscosity adjusting / separating device, the main combustion chamber, the deposit combustion furnace, the exhaust gas reducing greenhouse, the piping, etc. It is intended to provide a combustion system for flame retardant high-viscosity waste such as PCB that can prevent, make pollution-free, and avoid gas leakage. Others are equivalent to the invention of claim 1.

Claim 4 is a crusher for crushing an electric device containing a PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment and the PCB connected to the crusher and separates the PCB in a negative pressure state by reducing the viscosity of the PCB;
A hot air generating furnace and / or a temperature adjusting furnace for supplying hot air to the viscosity adjusting and separating apparatus;
A main combustion chamber provided continuously through a heat insulation pipe provided in the viscosity adjusting and separating device;
In addition, a deposit combustion furnace connected through a pipe provided in the viscosity adjusting and separating apparatus,
In this cylindrical refractory , the main combustion chamber, the exhaust gas reduction greenhouse that accommodates the exhaust gas of the deposit combustion furnace, and / or the cylindrical refractory (flues) are freely and easily assembled in an empty stacking system. A honeycomb-type thermal oxidation furnace that constitutes an empty space;
A catalytic denitration tower connected to the exhaust gas reducing greenhouse;
A dust collector and / or chimney connected to the catalyst denitration tower;
It is a combustion system for flame-retardant high-viscosity waste such as PCB composed of a waste-accommodating chamber connected to the deposit combustion furnace.

The invention of claim 5 is intended to achieve the object of claim 4 and to provide a chimney and / or catalyst denitration tower facility optimal for achieving this object.

Claim 5 is a combustion system for flame retardant high-viscosity waste such as PCB according to claim 4 ,
It is a combustion system for flame-retardant high-viscosity waste such as PCB, which is provided with a slaked lime silo and / or an activated carbon silo and can be supplied to the chimney and / or catalyst denitration tower facility.

The invention of claim 1 is a crusher for crushing an electric device containing a PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment connected to the crusher and the PCB, and lowers the viscosity of the PCB and separates it in a negative pressure state;
A hot air generating furnace and / or a temperature control furnace for supplying hot air to the viscosity adjusting separation device;
A main combustion chamber that burns the PCB while maintaining the viscosity of the PCB generated by the viscosity adjusting / separating device, which is provided continuously through a heat insulation pipe provided in the viscosity adjusting / separating device ;
In addition, a deposit combustion furnace provided continuously through a pipe provided in the viscosity adjusting and separating apparatus,
A honeycomb-type thermal oxidation furnace in which a cylindrical refractory (smoke) connected to the deposit combustion furnace is assembled in an empty stacking manner and an empty space is formed in the cylindrical refractory;
This is a combustion system for flame-retardant high-viscosity waste such as PCB, which is composed of a main combustion chamber and an exhaust gas-reducing greenhouse that accommodates exhaust gas from the deposit combustion furnace.

Accordingly, the first aspect of the present invention is to heat a PCB built in an electric device such as a transformer, a condenser, a cooler or a refrigerator, oil mud containing PCB, waste oil with high viscosity at an appropriate temperature (approximately 80 ° C. to 100 ° C.). Reduce the viscosity and separate. Then, while maintaining this viscosity, completely incinerate with a heat source such as a high-pressure spray nozzle and burner (wide-angle injection from the spray nozzle expands the contact area with air and complete combustion), and soot tar (black It is possible to provide a combustion system for flame-retardant high-viscosity waste such as PCB, which does not generate organic matter such as smoke tar).

Further, according to claim 1, this thermal oxidation furnace uses a cylindrical refractory as an empty stacking system, facilitates replacement / installation, uses an empty space, and can efficiently utilize radiant heat. Reliably through the flowing organic harmful substances (exhaust gas) and the hot air of the heating burner (exhaust of the exhaust gas) and the reliable heating red heat of the cylindrical refractory It has features such as being able to burn.

  Claim 1 relates to the treatment of exhaust gas, and the PCB in the exhaust gas is composed of carbon (C), hydrogen (H) and chlorine (CL). Therefore, the exhaust gas after treatment is rich in chlorine gas and intended to further eliminate pollution, and provides a chemical neutralization treatment method including treatment of dioxins, nitrogen oxides and the like.

The invention of claim 2 is a combustion system for flame-retardant high-viscosity waste such as PCB according to claim 1,
This is a combustion system for flame-retardant high-viscosity waste such as PCB, which is configured to be able to supply the exhaust gas from the main combustion chamber to the deposit combustion furnace and / or the exhaust gas reduced greenhouse through a three-way switching valve.

Accordingly, the second aspect has the characteristics that the object of the first aspect can be achieved, and the method for treating the exhaust gas from the main combustion chamber optimal for achieving the object can be provided.

The invention of claim 3 is a combustion system for flame-retardant high-viscosity waste such as PCB according to claim 1,
Honeycomb-type thermal oxidation furnace that forms an empty space in this cylindrical refractory, in which the exhaust gas from the deposit combustion furnace is freely and easily assembled into the cylindrical refractory (flue) by an empty stacking system It is a combustion system for flame-retardant high-viscosity waste such as PCB, which is configured to be guided to the pipe via a pipe.

  Therefore, claim 4 has the characteristics that the object of claim 1 can be achieved and a honeycomb-type thermal oxidation furnace optimal for achieving this object can be provided.

The invention of claim 4 is a crusher for crushing an electric device containing a PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment connected to the crusher and the PCB, and lowers the viscosity of the PCB and separates it in a negative pressure state;
A hot air generating furnace and / or a temperature control furnace for supplying hot air to the viscosity adjusting separation device;
A main combustion chamber arranged continuously through a heat insulation pipe provided in the viscosity adjusting and separating device;
In addition, a deposit combustion furnace provided continuously through a pipe provided in the viscosity adjusting and separating apparatus,
The main refrigeration chamber, the exhaust gas reduction greenhouse that contains the exhaust gas of the deposit combustion furnace, and / or the cylindrical refractory (flues) are empty-stacked, and the cylindrical refractory is assembled freely and easily. A honeycomb-type thermal oxidation furnace that constitutes the stacking space;
A catalytic denitration tower connected to an exhaust gas greenhouse,
A dust collector and / or chimney connected to the catalyst denitration tower;
This is a combustion system for flame-retardant high-viscosity waste, such as PCB, composed of a waste storage chamber connected to the deposit combustion furnace.

Therefore, since the PCB etc. are still adhering to, for example, the crushed electric equipment generated in the middle of the combustion system, it is transferred to a deposit combustion furnace in a separate chamber, Heat and incinerate with an oil burner (rotary kiln-type deposit combustion furnace). At this time, since unburned gas such as black smoke tar is generated in the combustion gas, it can be rendered harmless by heat oxidation in a honeycomb type thermal oxidation (combustion) furnace. Others are equivalent to the invention of claim 1.

In addition, claim 5 is at least a crusher, a viscosity control / separation device, a main combustion chamber, a deposit combustion furnace, an exhaust gas reduction greenhouse, piping, etc. In addition, it is possible to provide a combustion system for flame-retardant high-viscosity waste such as PCB that can eliminate pollution and avoid gas leakage.

The invention of claim 5 is a combustion system for flame retardant high-viscosity waste such as PCB according to claim 4 ,
It is a combustion system for flame-retardant high-viscosity waste such as PCB, which is provided with a slaked lime silo and / or an activated carbon silo and can be supplied to the chimney and / or catalyst denitration tower facility.

Accordingly, the fifth aspect has the characteristics that the object of the fourth aspect can be achieved, and a chimney and / or a catalyst denitration tower facility which is optimal for achieving the object can be provided.

  Hereinafter, embodiments (forms) of the present invention will be described.

  FIG. 1 shows a part of a conceptual diagram of an example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. FIG. 2 shows another part of FIG. FIG. 3 shows a flowchart of another example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. 4 is a front view of a honeycomb type thermal oxidation furnace, FIG. 5 is a plan view of FIG. 4, FIG. 6 is a side view of FIG. 4, and FIG.

  Hereinafter, a description will be given with reference to the drawings. A flame-retardant high-viscosity waste such as PCB (referred to as waste 1) is introduced into a supply bunker 3 via a transport vehicle 2. This waste 1 is fed through a supply port 5 into a crusher 6 (such as a first crusher and / or a second crusher). Below the crusher 6, there is a viscosity adjusting / separating device 8 into which a crushing waste 100 in which a flame-retardant high-viscosity substance such as PCB is attached and / or accommodated is introduced. A stainless steel mesh conveyor 80 (conveyor 80) is arranged in two stages and transferred by the two-stage conveyor 80. In this transfer process, the PCB and the solid matter are separated. The traveling speed of the viscosity adjusting / separating device 8 is about 60 (cm / min) to 100 (cm / min). The temperature in the separation chamber of the viscosity adjusting / separating apparatus 8 is about 80 ° C. to 100 ° C., and the PCB that has flowed and dropped reaches the converging portion 81a from the receiving floor 81 made of a slippery stainless steel plate and is stored. The angle of the receiving floor 81 is approximately 15 ° C. to ensure a natural flow and eliminate the risk of power and ignition. In the figure, reference numeral 82 denotes a discharge port for solid PCB deposits. In the viscosity adjusting / separating apparatus 8, the PCB is reduced in viscosity and subjected to separation processing in a negative pressure state. The viscosity adjusting / separating device 8 includes a hot air generating furnace 8a and / or a temperature adjusting furnace 8b for supplying hot air (exhaust gas temperature of approximately 80 ° C. to 100 ° C.). Hot air from the hot air generating furnace 8a and / or the temperature adjusting furnace 8b is introduced from the entirety of the viscosity adjusting / separating device 8 and the lower part of the receiving floor 81 through a heat insulation pipe.

  In the figure, 9 indicates a blower, and 91 indicates a cited blower.

  The solid matter from the discharge port 82 of the viscosity adjusting / separating device 8 is guided to the deposit combustion furnace 10 via a heat retaining pipe (in the drawing, all the pipes are indicated by a one-dot chain line; the same applies hereinafter). This deposit combustion furnace 10 is of a rotary kiln type and uses combustion gas from a main combustion chamber, which will be described later, as an auxiliary heat source and burns in a normal oil burner 101. The temperature inside the deposit combustion furnace 10 is set to about 1 The temperature is about 1,000 to 1,100 ° C. Also in the deposit combustion furnace 10, the separation process is performed in a negative pressure state by reducing the viscosity of the PCB.

  Further, the PCB from the converging portion 81a of the viscosity adjusting / separating device 8 is guided to the main combustion chamber 12 through a heat insulation pipe. The main combustion chamber 12 is a fixed furnace batch type, and the combustion load value is approximately 70,000 (kcal / m3H) to 100,000 (kcal / m3H). Incidentally, the calorific value of PCB is said to average approximately 5,000 (kcal / kg). Therefore, in the main combustion chamber 12 as well, the viscosity of the PCB is lowered and the combustion process is performed in a negative pressure state. In the figure, 13 is an injection and pressure type pressure burner installed horizontally in the center of the main combustion chamber 12, 14 is a control damper (oxygen regulator), and 15 is a strainer. Reference numeral 16 denotes an oil pump provided in the heat insulation pipe. In the figure, 1000 indicates a combustion burner.

  The unburned exhaust gas from the deposit combustion furnace 10 is guided to a thermal oxidation furnace 20 (honeycomb type black smoke tar removal “combustion” device) which is a secondary combustion chamber via a heat insulation pipe. The thermal oxidation furnace 20 includes a honeycomb-type combustion section 200 (heat exchanger), and incomplete combustion such as unburned exhaust gas (unburned gas) and / or PCB from the deposit combustion furnace 10. Therefore, black smoke tar, dioxin, soot, dust, etc. (organic harmful substances) contained in this exhaust gas and / or PCB, etc. are completely burned in the honeycomb-type combustion section 200 to make no pollution. In the figure, 21 indicates a heating burner. That is, the combustion unit 200 loads a cylindrical refractory 200a into a gas passage flue, applies external heat to the cylindrical refractory 200a, red heats it, and recycles organic harmful substances through the secondary radiant heat. It is a device that burns. In the figure, 20a indicates an inlet for organic harmful substances (unburned gas), and 20b indicates an outlet for exhaust gas subjected to smokeless treatment. The thermal oxidation furnace 20 has a structure in which it is diffused and smoothly supplied in an expanded manner from the convergence portion toward the combustion portion 200 to achieve complete combustion. In the figure, reference numeral 22 denotes a door that opens and closes a mouth for discharging / cleaning solids or for maintenance. This cylindrical refractory 200a is used as an empty stacking method to facilitate replacement and installation, to make efficient use of radiant heat by utilizing an empty space, and in the cylindrical refractory 200a, A feature of reliable combustion through the reliable contact between the flowing organic harmful substance (exhaust gas) and the hot air of the heating burner 21 (exhaust of the exhaust gas) and the reliable heated red heat of the cylindrical refractory 200a. is there. And by making this cylindrical refractory 200a into a ring structure, for example, heating red heat can be reliably and smoothly achieved by the heating burner 21, and efficient heat exchange between the hot air and organic harmful substances can be achieved. The combustion oxidation system is achieved and is extremely effective.

  Further, the exhaust gas from the deposit combustion furnace 10 is guided to the exhaust gas reducing greenhouse 25 through a heat insulation pipe. Further, the exhaust gas from the main combustion chamber 12 is also led to the exhaust gas reducing greenhouse 25 through a heat insulation pipe. In the figure, reference numeral 26 denotes a three-way switching valve provided in the heat insulation pipe. Via the three-way switching valve 26, the exhaust gas from the deposit combustion furnace 10 and the main combustion chamber 12 is switched or mixed. In this exhaust gas reducing greenhouse 25, exhaust gas is showered and the temperature is reduced. Then, the temperature-reducing gas in the exhaust gas reducing greenhouse 25 reaches the catalyst denitration tower 30 via a pipe. Further, the temperature rising gas of the catalyst denitration tower 30 reaches the chimney 32 from the dust collector 31 via a pipe.

  In the figure, 35 indicates a slaked lime silo, and 36 indicates an activated carbon silo, and the slaked lime and / or activated carbon is conveyed to a place where the slaked lime and / or activated carbon is required via a pipe. The purpose is neutralization and deodorization.

  In the figure, reference numeral 40 denotes a solid yard, and 41 denotes an oil tank. This oil is sent to the burners 13 and 21 and the burner (not shown) of the deposit combustion furnace 10 for reuse.

  Further, reference numeral 44 in the figure denotes a harmful gas removing device employed in another example. And this harmful gas removal apparatus 44 is employable also in the above-mentioned example.

FIG. 1 shows a part of a conceptual diagram of an example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. FIG. 2 shows another part of FIG. FIG. 3 shows a flowchart of another example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. FIG. 4 shows a front view of a honeycomb type thermal oxidation furnace. FIG. 5 shows a plan view of FIG. FIG. 6 shows a side view of FIG. FIG. 7 shows a cross-sectional view of the main part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waste 100 Crushed waste 101 Oil burner 2 Transport vehicle 3 Supply bunker 5 Supply port 6 Crusher 8 Viscosity control separation device 80 Conveyor 81 Receiving floor 81a Converging part 82 Discharge port 8a Hot air generating furnace 8b Temperature control furnace 9 Blower 91 Invitation Cited blower 10 Deposit combustion furnace 1000 Combustion burner 12 Main combustion chamber 13 Pressure burner 14 Control damper 15 Strainer 16 Oil pump 20 Thermal oxidation furnace 200 Combustion section 200a Cylindrical refractory 20a Inlet 20b Outlet 21 Heating burner 22 Door 25 Exhaust gas Reduced greenhouse 26 Three-way switching valve 30 Catalyst denitration tower 31 Dust collector 32 Chimney 35 Slaked lime silo 36 Activated carbon silo 40 Yard 41 Oil tank 44 Toxic gas removal device

  The present invention relates to a (detoxification) combustion system for flame-retardant high-viscosity waste such as PCB for separating and processing PCB contained in electric equipment.

  Conventional high-viscosity waste combustion (processing) systems such as PCBs are mainly processed by chemical decomposition processing technology. However, this chemical treatment method requires a large amount of initials and running costs. On the other hand, the incineration treatment method is difficult to implement because it is difficult to remove harmful substances in exhaust gas, especially tar, and the consent of the construction site and / or surrounding residents cannot be obtained. There's a problem.

  And as a prior art document, Japanese Patent Application Laid-Open No. 2003-134895 “Renewable Energy Gas / Heat Combined Supply System, Wide Area Gas / Heat Combined Energy Supply System Concentrated on a Unit Scale on These Units, and its Network System” There is. According to the disclosure of the present invention, in [Claim 13], “in the invention described in Claims 1 to 12, the mineralization by the thermal decomposition effect of the hydrogen-oxygen mixed gas, which is the characteristic of Brown gas, produces industrial waste and the environment. Although there is a disclosure of "combustion system for detoxifying waste using an incinerator or the like having the ability to decompose pollutants such as dioxin and PCB", the specific explanation is not disclosed sufficiently. can not understand.

JP2003-134895

  The conventional chemical treatment method or incineration treatment method has advantages and disadvantages, and there is a need for an improvement thereof and a non-polluting treatment method for flame retardant high-viscosity waste such as PCB, which is intended by the present invention. Yes. In addition, there is an urgent need for a method for treating such a flame-retardant high-viscosity waste such as PCB, in which no accident occurs.

  In view of the above, the present invention heats a PCB built in an electric device or the like, oil mud containing PCB, high-viscosity waste oil, etc. at an appropriate temperature (approximately 80 ° C. to 100 ° C.) to reduce its viscosity, To separate. And while maintaining this viscosity, it is completely incinerated with a heat source such as a spray outlet jet burner (wide-angle injection from the spray outlet expands the contact area with air and complete combustion), so that organic substances such as soot tar Provided is a combustion system for flame-retardant high-viscosity waste such as PCB that does not occur.

  For example, PCBs are still attached to the crushed electrical equipment generated during the above combustion system, so it is transferred to a deposit combustion furnace in a separate chamber and heated with a normal oil burner. Incinerate (rotary kiln-type deposit combustion furnace). At this time, since unburned gas such as “black smoke tar” is generated in the combustion gas, it is heated and oxidized in a honeycomb type oxidation (combustion) furnace to make it harmless.

  Regarding the treatment of exhaust gas, PCB consists of carbon (C), hydrogen (H), and chlorine (CL). Therefore, the exhaust gas after treatment is rich in chlorine gas and intended to further eliminate pollution, and it is desirable to neutralize chemicals including treatment of dioxins, nitrogen oxides and the like.

  Furthermore, pay attention to negative pressure at least for the crusher, viscosity regulating and separating device, main combustion chamber, deposit combustion furnace, exhaust gas reduction greenhouse, piping, etc., adopting a batch system, preventing PCB scattering and making pollution-free. To avoid gas leaks.

  According to the first aspect of the present invention, a PCB, an oil mud containing PCB, a high viscosity waste oil, etc. contained in an electric device such as a transformer, a condenser, a cooler, and a refrigerator are heated at an appropriate temperature (approximately 80 ° C. to 100 ° C.). Reduce the viscosity and separate. And while maintaining this viscosity, it is completely incinerated with a heat source such as a spray outlet jet burner (wide-angle injection from the spray outlet to expand the contact area with air and complete combustion), soot smoke (black smoke tar) A combustion system for flame-retardant high-viscosity waste such as PCB that does not generate organic matter such as

The invention of claim 1 relates to the treatment of exhaust gas, and the PCB in the exhaust gas is composed of carbon (C), hydrogen (H) and chlorine (CL). Accordingly, the exhaust gas after treatment is rich in chlorine gas, and is intended to further eliminate pollution, and is intended to neutralize chemicals including treatment of dioxins, nitrogen oxides, and the like.
Further, the invention of claim 1 is that this thermal oxidation furnace uses a cylindrical refractory as an empty stacking system, facilitates replacement and installation, uses an empty space, and efficiently utilizes radiant heat, Through this tubular refractory, through the reliable contact of flowing organic harmful substances (exhaust gas) with hot air from the heating burner (exhaust of exhaust gas), and the reliable heating red heat of the tubular refractory It is intended such that to achieve reliable combustion.
Furthermore, the invention of claim 1 is intended to enable the exhaust gas from the main combustion chamber to be switched and supplied to the deposit combustion furnace and / or the exhaust gas reduction greenhouse via the three-way switching valve.

Claim 1 is a crusher that crushes an electrical device containing a PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment and the PCB connected to the crusher and separates the PCB in a negative pressure state by reducing the viscosity of the PCB;
A hot air generating furnace and / or a temperature adjusting furnace for supplying hot air to the viscosity adjusting and separating apparatus;
A main combustion chamber for combusting PCB produced by the viscosity adjusting / separating device, connected through a heat insulation pipe provided in the viscosity adjusting / separating device;
In addition, a deposit combustion furnace connected through a pipe provided in the viscosity adjusting and separating apparatus,
A tubular refractory (smoke) connected to the deposit combustion furnace is assembled by an empty stacking method, and a honeycomb-type thermal oxidation furnace constituting an empty stacking space in the cylindrical refractory,
In the combustion system of flame retardant high-viscosity waste such as PCB, which is composed of the main combustion chamber and an exhaust gas reducing greenhouse that contains exhaust gas of the deposit combustion furnace ,
Whether the exhaust gas from the main combustion chamber is supplied as an auxiliary heat source to the deposit combustion furnace through the three-way switching valve or is mixed with the exhaust gas from the deposit combustion furnace and supplied to the exhaust gas reduction greenhouse. This is a combustion system for flame-retardant high-viscosity waste such as PCBs that can be switched.

The invention of claim 1 is a crusher for crushing an electric device containing a PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment connected to the crusher and the PCB, and lowers the viscosity of the PCB and separates it in a negative pressure state;
A hot air generating furnace and / or a temperature control furnace for supplying hot air to the viscosity adjusting separation device;
A main combustion chamber for combusting PCB generated by the viscosity adjusting and separating apparatus, connected through a heat insulation pipe provided in the viscosity adjusting and separating apparatus;
In addition, a deposit combustion furnace provided continuously through a pipe provided in the viscosity adjusting and separating apparatus,
A honeycomb-type thermal oxidation furnace in which a cylindrical refractory (flue) connected to the deposit combustion furnace is assembled in an empty stacking manner, and an empty stacking space is formed in the cylindrical refractory;
In the combustion system of flame retardant high-viscosity waste such as PCB, which consists of a main combustion chamber and an exhaust gas reduction greenhouse that contains the exhaust gas of the deposit combustion furnace ,
Switch between supplying exhaust gas from the main combustion chamber as an auxiliary heat source to the deposit combustion furnace via the three-way switching valve, or mixing with the exhaust gas from the deposit combustion furnace and supplying it to the exhaust gas reduction greenhouse. This is a combustion system for flame-retardant high-viscosity waste such as PCB, which is made possible.

Accordingly, the first aspect of the present invention is to heat a PCB incorporated in an electric device such as a transformer, a condenser, a cooler, or a refrigerator, oil mud containing PCB, waste oil with high viscosity, etc. at an appropriate temperature (approximately 80 ° C. to 100 ° C.). Reduce the viscosity and separate. While maintaining this viscosity, it is completely incinerated with a heat source such as a high-pressure spray nozzle and burner (wide-angle injection from the spray nozzle expands the contact area with air and complete combustion), soot tar (black It is possible to provide a combustion system for flame-retardant high-viscosity waste such as PCB, which does not generate organic matter such as smoke tar).
Further, according to claim 1, this thermal oxidation furnace uses a cylindrical refractory as an empty stacking system, facilitates replacement / installation, uses an empty space, and can efficiently utilize radiant heat. Reliably through the flowing organic harmful substances (exhaust gas) and the hot air of the heating burner (exhaust of the exhaust gas) and the reliable heating red heat of the cylindrical refractory It has features such as being able to burn.

Claim 1 relates to the treatment of exhaust gas, and the PCB in the exhaust gas is composed of carbon (C), hydrogen (H) and chlorine (CL). Therefore, the exhaust gas after the treatment has a feature that it can provide a chemical neutralization treatment method including treatment of dioxins, nitrogen oxides and the like, with the intention of further chlorine-free and further pollution-free .
Further, claim 1 is a method for combusting high-flammability waste materials such as PCB, which can supply exhaust gas from the main combustion chamber to a deposit combustion furnace and / or an exhaust gas reduction greenhouse through a three-way switching valve. Can provide a system.

  Hereinafter, embodiments (forms) of the present invention will be described.

  FIG. 1 shows a part of a conceptual diagram of an example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. FIG. 2 shows another part of FIG. FIG. 3 shows a flowchart of another example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. 4 is a front view of a honeycomb type thermal oxidation furnace, FIG. 5 is a plan view of FIG. 4, FIG. 6 is a side view of FIG. 4, and FIG.

  Hereinafter, a description will be given with reference to the drawings. A flame-retardant high-viscosity waste such as PCB (referred to as waste 1) is introduced into a supply bunker 3 via a transport vehicle 2. This waste 1 is fed through a supply port 5 into a crusher 6 (such as a first crusher and / or a second crusher). Below the crusher 6, there is a viscosity adjusting / separating device 8 into which a crushing waste 100 in which a flame-retardant high-viscosity substance such as PCB is attached and / or accommodated is introduced. A stainless steel mesh conveyor 80 (conveyor 80) is arranged in two stages and transferred by the two-stage conveyor 80. In this transfer process, the PCB and the solid matter are separated. The traveling speed of the viscosity adjusting / separating device 8 is about 60 (cm / min) to 100 (cm / min). Further, the temperature of the separation chamber of the viscosity adjusting / separating apparatus 8 is approximately 80 ° C. to 100 ° C., and the PCB that has flowed and dropped reaches the converging portion 81a from the receiving floor 81 made of a slippery stainless steel plate and is stored. The angle of the receiving floor 81 is approximately 15 ° C. to ensure a natural flow and eliminate the risk of power and ignition. In the figure, reference numeral 82 denotes a discharge port for solid PCB deposits. In the viscosity adjusting / separating apparatus 8, the PCB is reduced in viscosity and subjected to a separation process in a negative pressure state. The viscosity adjusting / separating device 8 includes a hot air generating furnace 8a and / or a temperature adjusting furnace 8b for supplying hot air (exhaust gas temperature of approximately 80 ° C. to 100 ° C.). Hot air from the hot air generating furnace 8a and / or the temperature adjusting furnace 8b is introduced from the entirety of the viscosity adjusting / separating device 8 and the lower part of the receiving floor 81 through a heat insulation pipe.

  In the figure, 9 indicates a blower, and 91 indicates a cited blower.

  The solid matter from the discharge port 82 of the viscosity adjusting / separating device 8 is guided to the deposit combustion furnace 10 via a heat retaining pipe (in the drawing, all the pipes are indicated by a one-dot chain line; the same applies hereinafter). This deposit combustion furnace 10 is of a rotary kiln type, uses combustion gas from a main combustion chamber, which will be described later, as an auxiliary heat source, burns in a normal oil burner 101, and the temperature inside the deposit combustion furnace 10 is approximately 1 The temperature is about 1,000 to 1,100 ° C. Also in the deposit combustion furnace 10, the separation process is performed in a negative pressure state by reducing the viscosity of the PCB.

  Further, the PCB from the converging portion 81a of the viscosity adjusting / separating device 8 is guided to the main combustion chamber 12 through a heat insulation pipe. The main combustion chamber 12 is a fixed furnace batch type, and the combustion load value is approximately 70,000 (kcal / m3H) to 100,000 (kcal / m3H). Incidentally, the calorific value of PCB is said to average approximately 5,000 (kcal / kg). Therefore, in the main combustion chamber 12 as well, the viscosity of the PCB is lowered and the combustion process is performed in a negative pressure state. In the figure, 13 is an injection and pressure type pressure burner installed horizontally in the center of the main combustion chamber 12, 14 is a control damper (oxygen regulator), and 15 is a strainer. Reference numeral 16 denotes an oil pump provided in the heat insulation pipe. In the figure, 1000 indicates a combustion burner.

  The unburned exhaust gas from the deposit combustion furnace 10 is guided to a thermal oxidation furnace 20 (honeycomb type black smoke tar removal “combustion” device) which is a secondary combustion chamber via a heat insulation pipe. The thermal oxidation furnace 20 includes a honeycomb-type combustion section 200 (heat exchanger), and incomplete combustion such as unburned exhaust gas (unburned gas) and / or PCB from the deposit combustion furnace 10. Therefore, black smoke tar, dioxin, soot, dust, etc. (organic harmful substances) contained in this exhaust gas and / or PCB, etc. are completely burned in the honeycomb-type combustion section 200 to make no pollution. In the figure, 21 indicates a heating burner. That is, the combustion unit 200 loads a cylindrical refractory 200a into a gas passage flue, applies external heat to the cylindrical refractory 200a, red heats it, and recycles organic harmful substances through the secondary radiant heat. It is a device that burns. In the figure, 20a indicates an inlet for organic harmful substances (unburned gas), and 20b indicates an outlet for exhaust gas subjected to smokeless treatment. The thermal oxidation furnace 20 has a structure in which it is diffused and smoothly supplied in an expanded manner from the convergence portion toward the combustion portion 200 to achieve complete combustion. In the figure, reference numeral 22 denotes a door that opens and closes a mouth for discharging / cleaning solids or for maintenance. This cylindrical refractory 200a is used as an empty stacking method to facilitate replacement and installation, to make efficient use of radiant heat by utilizing an empty space, and in the cylindrical refractory 200a, A feature of reliable combustion through the reliable contact between the flowing organic harmful substance (exhaust gas) and the hot air of the heating burner 21 (exhaust of the exhaust gas) and the reliable heated red heat of the cylindrical refractory 200a. is there. And by making this cylindrical refractory 200a into a ring structure, for example, heating red heat can be reliably and smoothly achieved by the heating burner 21, and efficient heat exchange between the hot air and organic harmful substances can be achieved. The combustion oxidation system is achieved and is extremely effective.

  Further, the exhaust gas from the deposit combustion furnace 10 is guided to the exhaust gas reducing greenhouse 25 through a heat insulation pipe. Further, the exhaust gas from the main combustion chamber 12 is also led to the exhaust gas reducing greenhouse 25 through a heat insulation pipe. In the figure, reference numeral 26 denotes a three-way switching valve provided in the heat insulation pipe. Via the three-way switching valve 26, the exhaust gas from the deposit combustion furnace 10 and the main combustion chamber 12 is switched or mixed. In this exhaust gas reducing greenhouse 25, exhaust gas is showered and the temperature is reduced. Then, the temperature-reducing gas in the exhaust gas reducing greenhouse 25 reaches the catalyst denitration tower 30 via a pipe. Further, the temperature rising gas of the catalyst denitration tower 30 reaches the chimney 32 from the dust collector 31 via a pipe.

  In the figure, reference numeral 35 denotes a slaked lime silo, and 36 denotes an activated carbon silo, and the slaked lime and / or activated carbon is conveyed to a place where the slaked lime and / or activated carbon is required via a pipe. The purpose is neutralization and deodorization.

  In the figure, reference numeral 40 denotes a solid yard, and 41 denotes an oil tank. This oil is sent to the burners 13 and 21 and the burner (not shown) of the deposit combustion furnace 10 for reuse.

  Further, reference numeral 44 in the figure denotes a harmful gas removing device employed in another example. And this harmful gas removal apparatus 44 is employable also in the above-mentioned example.

FIG. 1 shows a part of a conceptual diagram of an example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. FIG. 2 shows another part of FIG. FIG. 3 shows a flowchart of another example of a combustion system for flame-retardant high-viscosity waste such as PCB of the present invention. FIG. 4 shows a front view of a honeycomb type thermal oxidation furnace. FIG. 5 shows a plan view of FIG. FIG. 6 shows a side view of FIG. FIG. 7 shows a cross-sectional view of the main part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waste 100 Crushed waste 101 Oil burner 2 Transport vehicle 3 Supply bunker 5 Supply port 6 Crusher 8 Viscosity control separation device 80 Conveyor 81 Receiving floor 81a Converging part 82 Discharge port 8a Hot-air generating furnace 8b Temperature control furnace 9 Blower 91 Invitation Cited blower 10 Deposit combustion furnace 1000 Combustion burner 12 Main combustion chamber 13 Pressure burner 14 Control damper 15 Strainer 16 Oil pump 20 Thermal oxidation furnace 200 Combustion section 200a Cylindrical refractory 20a Inlet 20b Outlet 21 Heating burner 22 Door 25 Exhaust gas Reduced greenhouse 26 Three-way switching valve 30 Catalyst denitration tower 31 Dust collector 32 Chimney 35 Slaked lime silo 36 Activated carbon silo 40 Yard 41 Oil tank 44 Toxic gas removal device

Claims (7)

A crusher for crushing electrical equipment containing PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment and the PCB connected to the crusher and separates the PCB in a negative pressure state by reducing the viscosity of the PCB;
A hot air generating furnace and / or a temperature control furnace for supplying hot air (exhaust gas temperature of about 80 ° C. to 100 ° C.) to the viscosity adjusting separation device;
A main combustion chamber provided continuously through a heat insulation pipe provided in the viscosity adjusting and separating device;
In addition, a deposit combustion furnace connected through a pipe provided in the viscosity adjusting and separating apparatus,
A combustion system for flame-retardant high-viscosity waste such as PCB, which is composed of the main combustion chamber and an exhaust gas-reducing greenhouse that contains exhaust gas from the deposit combustion furnace. In the combustion system of flame-retardant high-viscosity waste such as PCB according to claim 1,
The deposit combustion furnace is a rotary kiln type, and the combustion hot gas from the main combustion chamber is used as an auxiliary heat source and burned with an oil burner. The temperature in the deposit combustion furnace is about 1,000 ° C. to 1 ° C. , Combustion system for flame-retardant high-viscosity waste such as PCB, which is configured at 100 ° C. In the combustion system of flame-retardant high-viscosity waste such as PCB according to claim 1,
The main combustion chamber is a fixed furnace batch type, and its combustion load value is approximately 70,000 (kcal / m ³ H) to 100,000 (kcal / m ³ H). A combustion system for flame-retardant high-viscosity waste, such as PCB, having a configuration of 5,000 (kcal / kg). In the combustion system of flame-retardant high-viscosity waste such as PCB according to claim 1,
A combustion system for flame-retardant high-viscosity waste such as PCB, which is configured to be able to supply exhaust gas from the main combustion chamber to a deposit combustion furnace and / or an exhaust gas-reducing greenhouse through a three-way switching valve. In the combustion system of flame-retardant high-viscosity waste such as PCB according to claim 1,
A combustion system for flame-retardant high-viscosity waste such as PCB, wherein exhaust gas from the deposit combustion furnace is guided to a honeycomb-type thermal oxidation furnace via a pipe. A crusher for crushing electrical equipment containing PCB;
A viscosity-adjusting separation device that separates the crushed electrical equipment and the PCB connected to the crusher and separates the PCB in a negative pressure state by reducing the viscosity of the PCB;
A hot air generating furnace and / or a temperature control furnace for supplying hot air (exhaust gas temperature of about 80 ° C. to 100 ° C.) to the viscosity adjusting separation device;
A main combustion chamber provided continuously through a heat insulation pipe provided in the viscosity adjusting and separating device;
In addition, a deposit combustion furnace connected through a pipe provided in the viscosity adjusting and separating apparatus,
The main combustion chamber, an exhaust gas reducing greenhouse containing exhaust gas of the deposit combustion furnace, and / or a honeycomb type thermal oxidation furnace;
A catalytic denitration tower connected to the exhaust gas reducing greenhouse;
A dust collector and / or chimney connected to the catalyst denitration tower;
A combustion system for flame-retardant high-viscosity waste, such as PCB, comprising a waste storage chamber connected to the deposit combustion furnace. In the combustion system of flame-retardant high-viscosity waste such as PCB according to claim 6,
A combustion system for flame-retardant high-viscosity waste such as PCB, which is provided with a slaked lime silo and / or an activated carbon silo and can be supplied to the chimney and / or catalyst denitration tower facility.

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