JP2002243120A - Pyrolysis processing facility having gas engine power generating device and pyrolysis processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure an electrical power required in a facility, enable a pyrolysis of processed material to be carried out under utilization of discharged gas generated, cause the processed material after being decomposed through pyrolysis operation to be ignited and changed into ash, and reduce its volume. SOLUTION: Material to be processed is processed through pyrolysis under utilization of discharged gas of a gas turbine power generating device 30, and the attained and processed material (carbide) is ignited by a carbide combustion furnace 52 and changed into ash. With such an arrangement as above, the discharged gas generated at the carbide combustion furnace 52 is fed into a dry distillation gas combustion furnace 40 and ignited together with water vapor and dry distillation gas.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pyrolysis treatment in which an object to be treated such as various kinds of waste, sludge, incinerated ash, fly ash and soil is subjected to indirect heating treatment to reduce the volume by drying, carbonization, incineration, etc. With regard to technology, in particular, a gas engine power generation device such as a gas turbine or a gas engine is installed, the obtained electric power is used as a power source for equipment installed in the facility, and exhaust gas generated from the gas engine power generation device is processed. TECHNICAL FIELD The present invention relates to a pyrolysis treatment facility provided with a gas engine power generation device and a pyrolysis treatment method, which are used as heating means for thermal decomposition of the present invention so as to reduce the running cost of total energy.

[0002]

2. Description of the Related Art Various types of waste are increasing year by year, and various techniques have been proposed for their disposal. One of them is to heat and thermally decompose the waste, burn the decomposed gas generated by the pyrolysis and the pyrolysis residue, process the generated ash into molten slag, treat the ash, and generate the thermal energy (exhaust) generated by the combustion. It is known to convert (heat → gas) heat into electric power using a power generator and recover it.

Further, it is known that electric power is obtained by a gas turbine generator and exhaust gas generated is used as a heat source for thermal decomposition of waste (Japanese Patent Laid-Open No. 8-49821).
JP-A-8-49822, JP-A-11-18221
No. 1).

Further, in order to increase the combustion efficiency of a gas turbine, it is common practice to heat pressurized air entering a combustor. The air from the air compressor driven by the gas turbine is heated to a high temperature by the high-temperature air heater and supplied to the combustor as combustion air, and the exhaust gas discharged from the gas turbine is provided. By using gas as a heat source for the pyrolysis reactor, the total energy effect is improved.

Further, Japanese Patent Application Laid-Open No. Hei 5-2 discloses an apparatus for supplying additional fuel to the exhaust gas of a gas turbine to promote combustion.
No. 64040 is known. In addition, Japanese Patent Application Laid-Open No. 2000-337171 discloses a method of generating electricity by supplying a carbonized gas obtained by carbonizing wastes as fuel for a gas turbine.

[0006]

As described above, obtaining electric power from the gas turbine generator and using the exhaust gas of the gas turbine as a heating source for the object to be processed contributes to a reduction in running cost. However, the temperature of the exhaust gas of the gas turbine is generally about 400 to 550 ° C.,
The thermal decomposition temperature of the object may not always be sufficient.

That is, in the actual heat treatment, the temperature is reduced by about 50 to 100 ° C. due to heat radiation from a device that performs thermal decomposition. Therefore, it may not be possible to secure the temperature required for thermal decomposition.

Further, since the thermal decomposition temperature varies depending on the properties of the object to be treated, it is difficult to perform stable thermal decomposition.

[0009] Further, there is also a problem that it takes a long time to reach a predetermined temperature at which charging of an object to be processed is started only with the temperature of the exhaust gas of the gas turbine. Although it is possible to raise the temperature of exhaust gas by devising the gas turbine itself, it is difficult to use this temperature stably for a long period of time in terms of heat durability, etc. Becomes
The operation is frequently stopped due to maintenance and inspection, which leads to an increase in running costs, which is not a good measure.

Further, in the case of Japanese Patent Application Laid-Open No. 2000-337171, it is intended to reduce the fuel cost by generating electricity using the carbonized gas as fuel for the gas turbine, but the carbonized carbon dioxide obtained by the properties of the waste is intended. Since the combustible components of the gas are various and the calorific value is low, it is difficult to perform stable power generation.

In addition to the above, if the object to be treated is burned as it is, since the object to be treated contains various substances and moisture, etc., it is difficult to stably burn it, and incomplete combustion tends to occur. There is a problem with safety.

The present invention has been made in view of the above circumstances, and generates a part or all of the electric power necessary for facility operation, and can obtain high-temperature hot-air gas in a short time so that it can be started from the start. In addition to shortening the time required to load the processing target, heating can be performed under temperature conditions suitable for the properties of various processing targets, enabling stable thermal decomposition, and
It is an object of the present invention to provide a pyrolysis treatment facility provided with a gas engine power generation device capable of pyrolyzing and carbonizing an object to be treated and burning the carbonized material, and a pyrolysis treatment method.

[0013]

According to the present invention, in order to achieve the above-mentioned object, an object to be treated is thermally decomposed by using exhaust gas of a gas engine power generator, and the obtained treated material (carbide) is burned. Then, the material to be treated can be stably reduced in volume by incineration.

That is, it has been found that the combustion can be performed safely and stably after the process of the treatment object → carbonization → ashing.
In short, using a gas engine power generator to reliably generate electricity, using the obtained power for facility operation, and using the exhaust gas obtained by operating the gas engine power generator to process waste such as waste Was heated. The means for solving the problem will be described below.

First, a charging means for charging a processing object, a thermal decomposition means for moving the charging processing object while heating and thermally decomposing the same, and burning a decomposition gas generated during the heating process from the processing object. A gas engine power supply device for supplying exhaust gas as a heating means for the pyrolysis means, wherein the gas is provided with: A means for raising the temperature of exhaust gas generated from the engine power generator is provided.

[0016] It is another object of the present invention to inject fuel into the exhaust gas of the above-mentioned gas engine power generator and burn it to obtain high-temperature hot air gas.

Further, the exhaust gas from the gas engine power generation device is introduced into a hot blast stove provided with a combustion burner to obtain a synthetic hot blast gas.

The gas engine power generation device comprises a gas turbine power generation device or a gas engine device.

Further, the means for incineration comprises a combustion furnace, wherein hot air from the combustion furnace is introduced into the decomposition gas combustion means to burn the decomposition gas.

The thermal decomposition means has a decomposition vessel provided with a means for introducing and stirring and transporting the object to be treated, and indirectly heating the object with hot air gas from outside the decomposition vessel to heat the substance to be treated. A plurality of decomposition vessels to be introduced and indirectly heated are arranged side by side. Also, the multiple disassembly containers are individually surrounded by a heating jacket,
Alternatively, they may be configured so as to be surrounded collectively.

In the gas turbine power generator, it is preferable that the air compressed by the compressor is heated and introduced into the combustor of the gas turbine in order to improve the efficiency of the turbine.

As the thermal decomposition method, there are a charging step of charging an object to be processed, a thermal decomposition step of moving and moving the charged object while heating the same, and a thermal decomposition step of performing a heat decomposition. A cracked gas combustion step of burning a cracked gas of the above, a step of burning and ashing the processed material after the pyrolysis in the burning step, and a heat engine having a gas engine power generation device for supplying exhaust gas to the pyrolysis step. A decomposition treatment method, wherein an exhaust gas generated from the gas engine power generation device heats and decomposes an object to be processed to generate a decomposition gas, and introduces the generated decomposition gas into a gas combustion furnace and burns it. The treated product after the thermal decomposition is introduced into an incinerator for incineration, the exhaust gas generated during the incineration is introduced into the gas incinerator for combustion, and the exhaust gas after combustion is purified and discharged. .

The exhaust gas from the gas engine power generator is
The fuel is injected into the exhaust gas and burned to produce high-temperature hot-air gas, or introduced into a hot-blast furnace equipped with a combustion burner and used as a synthetic hot-air gas.

Further, it is preferable to add a treating agent (chemical) which reacts with an organic halogen substance generated by thermal decomposition to generate harmless chloride to the object to be treated, and to perform a heat treatment. By using this, the detoxification treatment of the heat treatment facility can be realized.

An alkaline substance is used as a treating agent (chemical).

As the alkali substance, at least one kind among alkali metals, alkali metal compounds, alkaline earth compounds and alkaline earth metal compounds is selected or two or more kinds are mixed.

The alkali metal compounds are oxides, hydroxides, bicarbonates, carbonates, silicates, phosphates, aluminates, nitrates and sulfates of lithium, sodium, potassium, rubidium and potassium.

Specific treatment agents for alkali metal compounds include sodium hydrogen carbonate, sodium carbonate, sodium sesquicarbonate, natural soda, potassium carbonate, potassium hydrogen carbonate, sodium potassium carbonate, sodium hydroxide,
Using potassium hydroxide, as sodium bicarbonate, acid sodium carbonate, sodium bicarbonate, sodium bicarbonate, sodium carbonate, sodium carbonate, soda, soda ash, laundry soda, crystal soda, sodium sesquicarbonate, Sodium bicarbonate-sodium bicarbonate, sodium bicarbonate, sodium sesquicarbonate,
Trona is used as a natural soda.

The treatment agent for the alkaline earth metal compound is lime (CaO) slaked lime (Ca (OH) ₂ ), calcium carbonate (CaC
O ₃ ) Dolomite (CCaCO ₃ .MgCO ₃ ) is used.

Alkali metal treating agents include Li, Na,
K, Rb, Cs, and Fr are used.

The treating agent for the alkaline earth metal is Ca, S
r, Ba, Ra are used.

[0032]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a conceptual diagram of a pyrolysis treatment facility provided with a gas turbine generator, which is one of the gas engine power generation apparatuses, according to a first embodiment of the present invention. This is a first embodiment of the present invention in the case where the decomposition containers provided with the agitation and conveyance means are stacked in two stages.

In FIG. 1, reference numeral 10 denotes a charging means for charging an object to be processed, which comprises a hopper 11 and a screw conveyor 12 driven by a motor M.

Numeral 20 denotes a thermal decomposition means for heating and thermally decomposing the object to be treated. The thermal decomposition means 20 comprises two decomposition vessels 21 and 22 arranged vertically, and one end of the upper decomposition vessel 21. The object to be processed is supplied from the supply port 21a of the
1b, the mixture is transferred to the discharge port 21c while being stirred, and is loaded into the lower decomposition container 22 through the supply port 22a via the flexible joint 23, and the conveying means 22b of the decomposition container 22
The liquid is transferred to the discharge port 22c while being stirred and discharged from the discharge port 22c. Conveying means 2
1b and 22b is made of a screw or spiral conveyors, is driven to rotate at a respective motor M ₁ and M _2.

The decomposition vessels 21 and 22 are each heated by external heating means. This external heating means comprises a heating jacket HJ that covers the entire decomposition vessels 21 and 22 and a partition plate 2.
4, 28a, 28b to form hot air gas chambers 21d and 22d separately surrounding the decomposition vessels 21 and 22,
These two chambers communicate with each other through a communication port 25 provided at one end of the partition plate 24.

Numeral 30 denotes a gas turbine power generator, which is one of the gas engine power generators, and includes a gas turbine 31, a combustor 32 for supplying combustion gas to the gas turbine 31, and an air compressor driven by the gas turbine 31. 33 and generator 3
And 4. The exhaust gas discharged from the gas turbine 31 is introduced into a hot blast furnace 39 as heating means by the exhaust gas via an exhaust pipe 36 connected to the heating jacket HJ, and is combined with the hot blast gas by the combustion burner 37. And is used as a heat source for heating the decomposition vessels 21 and 22.

That is, the hot blast stove 39 raises the temperature to a predetermined temperature by the exhaust gas from the gas turbine generator 30 and the hot blast gas from the combustion burner 37, and uses the raised hot blast gas as a heating heat source of the thermal decomposition means 20. The decomposition vessel 22 is heated to, for example, 600.degree. When the temperature of the decomposition container 22 reaches a predetermined temperature, the combustion burner 37 is controlled to be stopped or throttled. Note that the combustion burner 37 is not required if the object can be thermally decomposed at the exhaust gas temperature of the gas turbine generator 30 (400 to 550 ° C.).

The cracked gas (carbonized gas or steam) generated during the heat treatment in the cracking vessels 21 and 22 is supplied to a steamy gas combustion furnace 40 provided at the lower portion of the cracking vessel 22 by a steam pipe 26 and a carbonized gas pipe. It is introduced by 27 and burned. Since the steam pipe 26 and the dry distillation gas pipe 27 are arranged and heated in the heating jacket HJ, it is possible to avoid problems such as the solidification and clogging of the organic component due to adhesion.

On the other hand, the decomposition vessel 21 is a furnace for drying and dechlorination. For example, air is introduced into a hot air gas from a temperature control air supply blower 44 so that the furnace can be heated at 350 ° C. Make adjustments. The hot-air gas discharged from the heating jacket HJ is partly circulated and reused. Others are discharged from the chimney via the heat exchanger.

Reference numeral 41 denotes a combustion burner for heating the gas-fired gas combustion furnace 40. The combustion burner 41 burns fuel to raise the temperature of the gas-fired gas combustion furnace 40 to 850 ° C. or higher, and burns the decomposed gas to make it harmless. In order to introduce the cracked gas into the dry distillation gas combustion furnace 40, the cracked gas is drawn into the dry distillation gas combustion furnace 40 from the nozzle 43 by using the circulation blower 42.

Reference numeral 50 denotes a recovery means for recovering the processed product (carbide) obtained by the thermal decomposition by the thermal decomposition means 20.
The treated material collected in step 0 is introduced into a carbide burning furnace 52 by using a conveying means 51 such as a pipe conveyor, where the treated material is burned and ashed. Exhaust gas generated during combustion in the carbide combustion furnace 52 is introduced into the carbonization gas combustion furnace 40 through the ash catcher 53 and burned. Exhaust gas after combustion in the carbonization gas combustion furnace 40 recovers steam and hot water by a heat exchanger, and lowers the exhaust gas temperature to 200 ° C. or lower. The exhaust gas is purified by a bag filter and passed through an exhaust blower. From the chimney.

Next, a series of heat treatments of the above embodiment will be described. First, before charging an object to be treated, the gas turbine 31 of the gas turbine power generator 30 is started, and exhaust gas from the gas turbine 31 is introduced into the hot stove 39.
Hot air gas is generated by the combustion burner 37 as necessary, and a hot air gas of a predetermined temperature is obtained by both.

As shown by the arrows, the hot air gas is supplied to the hot air gas inlet 54 → the lower hot air gas chamber 22 d → the communication port 25 →
Decomposition containers 22 and 2 through hot air gas chamber 21d in the upper stage
After heating 1, a part thereof is introduced into the carbonization gas combustion furnace 40 by the circulation blower 42. The other part is supplied to heat the compressed air that is introduced by the heating means 35 formed of a heat exchanger or the like provided in the gas turbine power generation device 30 and sent to the combustor 32. A part is discharged after recovering a part of the heat with a heat exchanger or the like.

Now, when drying and dechlorination are performed in the upper decomposition vessel 21 and volume reduction by carbonization is performed in the lower decomposition vessel 22, the temperature in the lower decomposition vessel 22 is reduced by hot air gas. For example, the temperature is adjusted to be heated to 600 ° C. The temperature in the upper decomposition vessel 21 is, for example, 350 ° C.
The air for temperature adjustment is introduced into the hot air gas by the blower 44 as a temperature adjusting means so as to heat the hot air.

After reaching a predetermined temperature (within one hour after the start-up), the object to be processed is charged from the charging means 10 and thermal decomposition is started. The cracked gas generated by the thermal decomposition is introduced into the dry distillation gas combustion furnace 40 through the steam conduit 26 and the dry distillation gas pipe 27, and is burned together with the circulating gas by the circulation blower 42.

The temperature in the lower decomposition vessel 22 is set to 60
In order to maintain the temperature at 0 ° C., it is necessary to raise the temperature in the hot air gas chamber 22d by 50 to 100 ° C., which cannot be increased at the exhaust gas temperature of the gas turbine. The insufficient temperature is compensated for by the combustion temperature of the combustion burner 37. The combustion of the combustion burner 37 is set so that it can be stopped or throttled after reaching a predetermined temperature.

In the dechlorination treatment in the decomposition vessel 21 in the upper stage, a treatment agent (chemical: powder of sodium hydrogen carbonate, for example) that mixes and reacts with an organic halogen compound to produce harmless chloride is mixed with the object to be treated. The mixture fed from the feeding means 10 is heated. In this heat treatment, from the mixing ratio of the mixture to be treated, the processing conditions such as the temperature at which the harmful component is precipitated, the time, the amount of the deposition and the amount of the chemical that can be sufficiently removed by reacting with the harmful component are investigated in advance. The treatment is carried out at a temperature (200 ° C. to 350 ° C.) and time that can cover this.

In the decomposition vessel 21 in the upper stage, drying is performed, and the generated organic halogen compound is contacted with the added chemical to produce harmless chlorides (such as sodium chloride). Make sure that no harmful organic halogen compounds (such as dioxins) remain in the gas.

As the treating agent to be mixed or added to the article to be treated, use is made of an alkaline substance which reacts with HCl (hydrogen chloride) as an organic halogen compound to produce harmless chloride (such as sodium chloride). For example, Japanese Patent Application Laid-Open No. 9-155326 and Japanese Patent Application Laid-Open No.
JP-A-10-235186, JP-A-10-235
No. 187, alkaline earth metal, alkaline earth metal compound, alkali metal, alkali metal compound,
Specifically, calcium, lime, slaked lime, calcium carbonate, dolomite, silicate (such as calcium silicate), sodium hydrogen carbonate, sodium carbonate, sodium sesquicarbonate, natural soda, sodium hydroxide, potassium hydroxide,
One of potassium hydrogen carbonate and potassium carbonate is selected, or several types are mixed and used. As an amount to be used, 5 to 30% by weight of the material to be treated is mixed or added.

For example, sodium bicarbonate (Na
When HCO ₃ ) is used, a decomposition gas of the HCl component is generated in the dechlorination furnace which is the first heat treatment furnace.
Reacts immediately with sodium bicarbonate (NaHCO ₃ )
+ (HCl) → (NaCl) + (H ₂ O) + (CO ₂ ), producing harmless sodium chloride (NaCl) and eliminating harmful HCl from the decomposition gas. Thereby, the detoxification of the HCl component in the decomposed gas and the detoxification of the object to be processed are simultaneously performed.

The object to be treated after the harmful components are precipitated is sent to the lower decomposition vessel 22 through the flexible joint 23 as described above, where it is carbonized, and the carbide is recovered by the recovery means 50. Since there is no gas containing harmful components such as HCl and dioxins in the decomposition vessel 22, the carbides do not adsorb these harmful substances, so they can be reused as harmless carbides if necessary as fuel. it can.

The carbide produced as described above, that is, the carbonized processed material is introduced into a carbide (ashed) combustion furnace 52 to be ashed and burned by the conveying means 51, and is burned. The combustion furnace 52 uses, for example, a rotary kiln-type combustion furnace, incinerates and burns the carbide introduced from one end while rotating it, and discharges the ash from the other end. The exhaust gas generated in the carbide combustion furnace 52 is introduced into the carbonization gas combustion furnace 40 via the ash catcher 53 and burns together with the steam and carbonization gas. The ash catcher 53 is for minimizing the movement of ash to the carbonization gas combustion furnace 40.

The reason why the dry distillation gas combustion furnace 40 and the carbide combustion furnace 52 are configured differently as in the above-described embodiment is as follows.

Since the exhaust gas burned in the carbonization gas combustion furnace 40 is sucked by the exhaust blower after the bag filter, if both furnaces are integrally formed, the ash is sucked to the heat exchanger and the bag filter. This is to prevent the ash from being transported and to minimize the amount of ash contained in the exhaust gas and moving. The ash catcher 53
It is for the above-mentioned reason that the ash that moves to the carbonization gas combustion furnace 40 is reduced by providing the ash.

[Second Embodiment] FIG. 2 shows a pyrolysis treatment facility according to a second embodiment of the present invention. In this second embodiment, the dry distillation gas combustion furnace 40 is separated from the heating jacket HJ and placed separately. And the gas turbine power generator 30
A so-called after-bar system is adopted in which fuel is sprayed and injected into the exhaust gas discharged from the gas turbine 31 from the fuel supply unit 38 and burned. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In the first and second embodiments described above, the hot blast stove is heated to a predetermined temperature by using a combustion burner in combination with the exhaust gas of the gas turbine of the gas turbine power generation device or by spraying and injecting fuel. This is a reduction in the heating of the processed material.

[Third Embodiment] FIG. 3 is a conceptual diagram showing a third embodiment in which the present invention is applied to a thermal decomposition facility having a rotary kiln type heat treatment. In FIG.
A decomposition vessel 70 serving as a heat treatment furnace (drying / dechlorination furnace), and 70 represents a decomposition vessel serving as a second heat treatment path (carbonization furnace).
Is composed.

The disassembly container 60 is composed of a rotatable rotating cylindrical body 6.
1, a heating jacket 62 for forming a gas duct on the outer periphery of the rotating cylinder 61 to heat the rotating cylinder 61 by introducing hot gas, and a heating jacket 62 provided at one end of the rotating cylinder 61 for Supply port 63 for supplying into rotating cylinder 61
And a discharge port 6 provided at the other end of the rotary cylinder 61.
4 and the rotary cylinder 61 is rotationally driven by a rotation driving means (not shown).

The rotation driving means of the rotating cylinder 61 is composed of a normal driving motor, a driving gear, a driven gear provided on the rotating cylinder, and the like. The heating jacket 62 is fixed, and a mechanical contact MS is applied to a rotating contact portion with the rotating cylindrical body 61.

Reference numeral 65 denotes a supply duct provided on the supply port 63 side of the decomposition vessel 60, and introduces a mixture of an object to be treated and a treatment agent (chemical) for dechlorination into the rotary cylinder 61.

The structure of the decomposition vessel 70 is substantially the same as that of the decomposition vessel 60. The rotation cylinder 71 is rotatable, and the rotation cylinder 71 is provided around the rotation cylinder 71 by introducing hot gas. A heating jacket 72 for heating; a supply port 73 provided at one end of the rotary cylinder 71, in this example, on the discharge port 64 side of the decomposition vessel 60, for supplying an object to be processed into the rotary cylinder 71; And a discharge port 74 provided at the other end of the cylindrical body 71.

Reference numeral 66 denotes a discharge duct which surrounds the discharge port 64 side of the decomposition vessel 60 and the supply port 73 side of the decomposition vessel 70, and introduces an object processed in the decomposition vessel 60 from the decomposition vessel 60 to the decomposition vessel 70. Show.

Reference numeral 75 denotes a discharge duct which surrounds the discharge port 74 of the rotary cylindrical body 71 of the decomposition vessel 70 and discharges the object heated in the decomposition vessel 70 to the collection means 50.

The rotating cylindrical body 61 of the disassembling vessel 60 and the rotating cylindrical body 71 of the disassembling vessel 70 are arranged vertically and are provided on the outer periphery of the rotating cylindrical bodies 61 and 71 (not shown). The heating jackets 62 and 72 are supported and fixed by a fixing member. Inside the rotary cylinders 61 and 71, a plurality of blades for transferring the mixture of the processing target and the processing agent while stirring are provided. The mixture is transferred from the supply port 63 side to the discharge port 64 side by the rotation of 61 and 71 itself.

Although not shown, a mechanical seal is applied to the contact portions of the ducts 65 and 66 that come into rotational contact with the rotating cylinder 61 and the contact portions of the ducts 66 and 75 that come into contact with the rotating cylinder 71. ing.

As described in the first embodiment, the crushed object to be treated and the treating agent composed of an alkaline substance are mixed and charged from a hopper (not shown), and are supplied from the supply port 63 of the rotating cylinder 61 to the inside of the rotating cylinder 61. To supply.

The above-mentioned hopper may have both the function of crushing the object to be treated and the function of mixing the processing agent, and may mix the solid with the processing agent while crushing it. The material and the treating agent may be mixed and thrown into the hopper.

Reference numeral 76 denotes a communication tube which connects the heating jacket 72 of the decomposition vessel 70 and the heating jacket 62 of the decomposition vessel 60, and is configured to feed hot air gas after heating the decomposition vessel 70 into the decomposition vessel 60. I have. 77 is a temperature adjusting means for adjusting the temperature by introducing fresh air for temperature adjustment.

Numeral 80 denotes a carbonization gas combustion furnace provided with a combustion bar bar 81.
The decomposition gas generated in the decomposition vessel 70 is introduced through a steam pipe 82, and the decomposition gas generated in the decomposition vessel 70 is introduced through a dry distillation gas pipe 83 and burned. At this time, if the steam pipe 82 and the dry distillation gas pipe 83 are exposed to the atmosphere, there is a possibility that the organic matter and the like generated by the decomposition are cooled and adhered and solidified on both pipe walls to cause pipe blockage. To prevent this, the pipe 8
2 and 83 are surrounded by a heat insulation jacket 84, and a hot air gas introduction pipe 85 is introduced from the dry distillation gas combustion furnace 80 into the heat insulation jacket 84, and the temperature used for thermal decomposition (for example, 600
The temperature inside the heat insulation jacket 84 is heated and kept at a temperature not lower than (° C.). Exhaust gas introduced from the carbide combustion furnace 52 is introduced into the dry distillation gas combustion furnace 80 and is burned together.

Exhaust gas burned in the dry distillation gas combustion furnace 80 is recovered by a heat exchanger, purified by a bag filter, and discharged from a chimney by an exhaust blower.

A portion of the hot blast gas that has heated the decomposition vessel 60 is introduced into heating means 35 formed by a heat exchanger or the like provided in the gas turbine power generator 30 and is sent to the combustor 32 by compressed air. The other part is discharged from the chimney after recovering the heat in another heat exchanger.

As in the above-described third embodiment, the decomposition gas is burned in a dry distillation gas combustion furnace via a steam pipe and a dry distillation gas pipe, and the steam pipe and the dry distillation gas pipe are heated and kept warm. Therefore, it is possible to prevent organic substances and the like from adhering and solidifying on the tube wall.

[0074]

As described above, according to the present invention, the exhaust gas of the gas turbine generator for supplying electric power is used,
In addition, the hot blast gas combined with the hot blast gas by the attached combustion burner can be obtained in a short time. Therefore, the so-called “start-up time” from the start of the processing facility to the input of the workpiece can be reduced. In addition, it is possible to obtain hot blast gas at a temperature higher than the exhaust gas temperature (400 to 550 ° C.) of the gas turbine power generation device, and to heat under a temperature condition according to the properties of various objects to be processed. It can be carried out.

Moreover, since the processed material (carbide) obtained by thermally decomposing the object to be treated is burned and ashed, the object to be treated can be stably burned and ashed. That is, since the object to be processed is burned through the process of the object to be processed → carbonization → ashing,
A safe and secure treatment method and facility can be obtained without emitting harmful organic halogen compounds such as dioxins.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a first embodiment of a thermal decomposition treatment facility of the present invention.

FIG. 2 is a conceptual diagram of a second embodiment of the thermal decomposition treatment facility of the present invention.

FIG. 3 is a conceptual diagram of a third embodiment of the thermal decomposition treatment facility of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Input means 11 ... Hopper 12 ... Screw conveyor 20 ... Thermal decomposition means 21, 22, 60, 70 ... Decomposition container 23 ... Flexible joint 24, 28a, 28b ... Partition plate 25 ... Communication port 26 ... Decomposition gas conduit 27 ... Temperature Adjusting means 30 Gas turbine power generator 31 Gas turbine 32 Combustor 33 Air compressor 34 Gas turbine generator 35 Compressed air heating means 36 Exhaust gas pipe 37 41 41 81 Burner 39 Hot stove 40 ... a dry distillation gas combustion furnace 42 ... a circulation blower 43 ... a nozzle 44 ... an air supply blower for temperature control 50 ... a recovery means 51 ... a transportation means 52 ... a carbide combustion furnace 53 ... an ash catcher 61, 71 ... a rotating cylindrical body 62, 72 ... a heating jacket 63, 73 ... supply port 64, 74 ... discharge port 65 ... supply side duct 66 ... introduction duct 75 ... discharge Ducts 76 ... inlet pipe connecting pipe 77 ... Temperature adjusting means 80 ... carbonization gas combustion furnace 82 ... steam pipe 83 ... carbonization gas pipe 84 ... insulation jacket 85 ... hot gas

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) C02F 11/10 C07B 35/06 4D059 C07B 35/06 37/06 4H006 37/06 F02C 6/18 Z F02C 6 / 18 F23G 5/16 ZABB F23G 5/16 ZAB 5/46 ZABZ 5/46 ZAB B09B 3/00 ZAB F term (reference) 2E191 BA12 BB00 BB01 BC01 BD12 3K061 AA07 AA23 AB02 AC02 AC03 BA05 CA01 CA07 FA03 FA10 FA10 AA07 AA23 AB02 AC02 AC03 BA05 JA05 JA15 3K078 AA05 BA08 CA02 CA21 CA24 4D004 AA02 AA36 AA37 AA41 AB05 AB07 BA03 CA22 CA26 CA27 CA28 CA42 CB04 CB09 CB27 CB31 CB34 CB36 CB42 CC11 4D0CA03 DA04 CAB DA03 CB42 DA13 DA18 DA38 DA39 4H006 AA05 AC13 AC26 BC10 BD81

Claims (14)

[Claims] 1. A charging means for charging an object to be treated, a thermal decomposition means for moving the charged object while heating and thermally decomposing the same, and combusting a decomposition gas generated during the heat treatment from the object to be processed. A gas engine powering device that supplies exhaust gas as a heating means of the pyrolysis means, wherein the gas includes: A pyrolysis treatment facility equipped with a gas engine power generator, wherein a means for raising the temperature of exhaust gas generated from the engine power generator is provided. 2. A thermal decomposition treatment facility equipped with a gas engine power generation device according to claim 1, wherein fuel is injected into the exhaust gas of the gas engine power generation device and burned to obtain high-temperature hot air gas. 3. The gas engine power generator according to claim 1, wherein exhaust gas from the gas engine power generator is introduced into a hot blast stove provided with a combustion burner to obtain a synthetic hot air gas. Thermal decomposition facility. 4. A pyrolysis facility provided with a gas engine power generation device according to claim 1, wherein the gas engine power generation device comprises a gas turbine power generation device. 5. A thermal decomposition treatment facility provided with a gas engine power generator according to claim 1, wherein the gas engine power generator comprises a gas engine device. 6. The gas according to claim 1, wherein the means for incineration comprises a combustion furnace, and hot air from the combustion furnace is introduced into the decomposition gas combustion means to burn the decomposition gas. Pyrolysis treatment facility equipped with an engine generator. 7. The thermal decomposition means has a decomposition vessel provided with a means for introducing an object to be processed and agitating and transporting the object therein, and is indirectly heated from outside of the decomposition vessel by hot air gas. A pyrolysis treatment facility provided with the gas engine power generator according to claim 1. 8. A pyrolysis apparatus provided with a gas engine power generation apparatus according to claim 1, wherein a plurality of decomposition vessels for introducing an object to be treated and indirectly heating are arranged side by side. Processing facility. 9. The gas engine power generator according to claim 1, wherein the plurality of disassembly containers are individually surrounded by a heating jacket or are surrounded by a heating jacket. Pyrolysis treatment facility. 10. The heat provided with a gas engine power generator according to claim 4, wherein the air compressed by the compressor of the gas turbine power generator is heated and introduced into a combustor of the gas turbine. Disassembly processing facility. 11. A charging step of charging an object to be processed, a thermal decomposition step of moving the charged object while heating and thermally decomposing the same, and burning decomposed gas generated during the heat treatment from the object to be processed. A cracking gas combustion step, a step of burning and ashing the treated material after the pyrolysis in the combustion step, and a gas engine power generation apparatus for supplying an exhaust gas to the pyrolysis step. The exhaust gas generated from the gas engine power generation device heats and decomposes an object to be processed to generate a decomposed gas, and introduces the generated decomposed gas into a gas combustion furnace for combustion. The product is introduced into an incinerator and incinerated, and the exhaust gas generated during the incineration is introduced into the gas incinerator and burned, and the exhaust gas after combustion is purified and discharged. Pyrolysis process with gas engine power generator Method. 12. The exhaust gas from the gas engine power generator is:
The thermal decomposition treatment method provided with a gas engine power generation device according to claim 11, wherein fuel is injected into the exhaust gas and burned to produce a high-temperature hot air gas. 13. The exhaust gas from the gas engine power generator is:
The thermal decomposition treatment method provided with a gas engine power generation device according to claim 11, wherein the gas is introduced into a hot blast stove provided with a combustion burner to produce synthetic hot blast gas. 14. A heat treatment is carried out by adding a treating agent which reacts with an organic halogen substance generated by thermal decomposition to generate harmless chloride to an object to be treated. Item 14. A thermal decomposition method comprising the gas engine power generator according to Item 13.