JP2005177620A - Decomposition method and decomposition apparatus of organic compound - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decomposition apparatus for efficiently decomposing organic compounds. <P>SOLUTION: This decomposition apparatus of organic compounds comprises: a heating storage 22 for heating an organic compound 21 containing moisture to generate water vapor and volatile matter; a collection means for collecting the volatile matter generated from the heating storage 22; a storing means 24 temporarily storing water vapor from the heating storage 22 and feeding the water vapor to the vicinity of the collection means 26 when necessary; and a leading means 29 provided between the heating storage 22 and collection means 26 for leading oxygen or air to the collection means 26, and it makes the volatile matter generated from the organic compound 21 react with water vapor. Necessary reaction heat is obtained by oxidizing (burning) part of the volatile matter. Thus, a water vapor generator is not needed to be installed, external energy consumption is reduced, and fuel gas containing mainly hydrogen can be recovered from the moisture-containing organic compound 21. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an organic compound decomposition method and decomposition apparatus.

  In recent years, a method has been proposed in which municipal waste discharged from homes or offices is heated and decomposed in an oxygen-free or low-oxygen atmosphere.

  In this type of treatment method, pyrolysis gas generated during pyrolysis is combusted, the exhaust gas is guided to an exhaust heat boiler to generate steam, and the steam generates electricity to recover thermal energy.

  However, since municipal waste contains vinyl chloride and garbage, chlorine is generated in the pyrolysis process by mixing it with pyrolysis gas. As a result, there has been a problem that heat transfer surfaces such as waste heat boilers and heat exchangers are corroded.

  For these reasons, in order to prevent corrosion of waste heat boilers and heat exchangers, it is desirable to remove chlorine before introducing pyrolysis gas into them.

  As a conventional technique relating to such chlorine content removal, there is a method in which water or an alkaline aqueous solution such as an aqueous sodium hydroxide solution is sprayed on the pyrolysis gas (see, for example, Patent Document 1).

  The conventional municipal waste disposal method and apparatus will be described below with reference to the drawings. FIG. 4 is a system diagram of a conventional municipal waste disposal apparatus.

  As shown in FIG. 4, the first cracking furnace 1 uses a pyrolysis drum, and heats municipal waste to perform pyrolysis. The second cracking furnace 2 heats the pyrolysis gas generated from the first cracking furnace 1 at a temperature higher than that to gasify the tar content. The heat exchanger 3 exchanges heat between the pyrolysis gas discharged from the second cracking furnace 2 and room temperature air, and introduces the cooled pyrolysis gas into the scrubber-type wet cleaning tower 4.

  The gas combustion furnace 5 and the high temperature melting furnace 6 serve as a combustor. The gas combustion furnace 5 burns the pyrolysis gas purified by the wet cleaning tower 4, and the high temperature melting furnace 6 is the first cracking furnace. The char is burned out of the pyrolysis residue generated in 1. The feeder 7 supplies garbage to the first cracking furnace 1. The fans (or blowers) 8 to 12 are provided for introducing and circulating air from the outside.

  The operation of the conventional municipal waste disposal apparatus configured as described above will be described below.

  First, municipal waste discharged from ordinary households and business establishments is put into the first cracking furnace 1 from the feeder 7. The temperature in the first cracking furnace 1 is generally about 450 ° C.

  The pyrolysis gas generated by this pyrolysis is sent to the second cracking furnace 2. For this reason, it is separated into debris, aluminum, iron, etc. which are pyrolysis residue and char.

  In the second cracking furnace 2, the pyrolysis gas is heated at a temperature higher than that of the first cracking furnace 1, and the tar content is decomposed and gasified.

  The pyrolysis gas after decomposing tar is sent to the heat exchanger 3, cooled by exchanging heat with room temperature air, and then introduced into the wet cleaning tower 4.

  In the wet cleaning tower 4, water or an alkaline solution such as an aqueous sodium hydroxide solution is sprayed on the pyrolysis gas to remove chlorine contained in the pyrolysis gas.

  The pyrolysis gas after desalting is mixed with the air heated by the heat exchanger 3 and burned in the gas combustion furnace 5. In the gas combustion furnace 5, heat is exchanged between the combustion exhaust gas and air, and this air is circulated between the first cracking furnace 1, the second cracking furnace 2, and the gas combustion furnace 5, and the first cracking furnace 1, It becomes a heat source for the cracking furnace 2.

  In the high temperature melting furnace 6, in addition to char separated from the pyrolysis residue and combustion exhaust gas cooled by heat exchange with air in the gas combustion furnace 5, room temperature air is introduced, and high temperature combustion is performed under a predetermined excess oxygen condition. To do. The temperature is 1200 ° C. or higher, preferably about 1300 ° C., which is about 100 to 150 ° C. higher than the melting temperature of ash.

The molten ash produced by this combustion is cooled, for example, by dropping it from the furnace bottom into a cooling water tank and collecting it as slag.
JP-A-7-324716

  In the above conventional configuration, when the thermal energy of the combustion exhaust gas generated by burning the thermal decomposition products of municipal waste is recovered by heat exchange, the tar content in the pyrolysis gas is gasified, and hydrogen chloride in the combustion exhaust gas is further removed. Since it can be removed, corrosion of the heat exchanger or the like can be prevented.

  However, in order to decompose the tar in the pyrolysis gas, the temperature of the second cracking furnace 2 is increased. As the heat source, air is circulated as a heat medium so as to utilize the waste heat of the gas combustion furnace 5. For this reason, for example, in order to maintain the second cracking furnace 2 at a high temperature of about 700 ° C., it is necessary to make the temperature of the air higher than that, the heat loss from the circulation circuit is large, and the thermal efficiency of the entire apparatus deteriorates. There was a problem.

  An object of the present invention is to solve the conventional problems and to efficiently supply energy necessary for decomposition of an organic compound.

  In addition, although the above-described conventional configuration can recover the pyrolysis gas mainly composed of hydrocarbons, a steam generator for steam reforming is separately required for recovering hydrogen as fuel for the fuel cell. There was a problem that there was.

  An object of the present invention is to solve the conventional problems and to recover hydrogen with a simple configuration by obtaining water vapor from water contained in a raw material.

  In order to achieve the above object, the present invention heats an organic compound containing moisture to generate water vapor and volatile matter, and oxidizes a part of the volatile matter to generate a reaction between the remaining volatile matter and water vapor. Since it is used as heat, it is possible to recover the fuel gas mainly composed of hydrogen from the organic compound with little external energy without installing a steam generator or the like.

  Further, the present invention provides an organic compound decomposition apparatus comprising: a heating chamber that heats an organic compound containing moisture to generate water vapor and volatile matter; a capturing means that captures volatile matter generated from the heating chamber; and a heating chamber. From the storage means for temporarily storing the generated water vapor and supplying the water vapor in the vicinity of the capture means when necessary, and the introduction means provided between the heating chamber and the capture means for introducing oxygen or air into the capture means Since it comprises, without installing a water vapor generator etc., external energy consumption can be reduced and the fuel gas which has hydrogen as a main component can be collect | recovered from the organic compound containing a water | moisture content.

  In addition, the present invention provides an organic compound decomposition apparatus, a heating chamber composed of a plurality of heating chambers for heating water-containing organic compounds to generate water vapor and volatile components, and capturing volatile components generated from the heating chamber. Means, and an introduction means provided between the heating chamber and the trapping means for introducing oxygen or air into the trapping means, wherein at least one of the heating chambers is in a temperature zone suitable for moisture evaporation, and the remainder is volatile matter. Since the temperature can be adjusted to a temperature range suitable for volatilization, volatile components and water vapor can be continuously supplied to the trapping means, and oxidation heat generated when a part of the volatile components is oxidized can be reduced. By utilizing the remaining volatile components and water vapor, the fuel gas containing hydrogen as a main component can be continuously recovered without providing a water vapor generator or the like.

  According to the present invention, the fuel gas containing hydrogen as a main component can be recovered from the organic compound with little external energy without installing a steam generator or the like.

  The invention of the method for decomposing an organic compound according to claim 1 of the present invention is that the organic compound containing moisture is heated to generate water vapor and volatile matter, and the heat obtained by oxidizing a part of the volatile matter remains. It is used as reaction heat between volatile matter and water vapor.

  In the decomposition method of the above configuration, a part of the volatile matter is oxidized to generate heat, and the heat is used as the reaction heat of the remaining volatile matter and water vapor, so there is little external energy without installing a water vapor generator or the like. Fuel gas mainly composed of hydrogen can be recovered from organic compounds.

  Further, the invention of the method for decomposing an organic compound according to claim 2 is the invention according to claim 1, wherein the volatile matter generated from the organic compound is captured and oxidized on the surface of the porous capturing material. The residence time of volatile matter can be lengthened. Therefore, sufficient oxidation time and reaction time for reacting with water vapor can be taken, the decomposition rate of the organic compound can be improved, and more fuel gas can be recovered, so that the energy efficiency of the decomposition process can be further improved.

  The invention of the organic compound decomposing apparatus according to claim 3 is a heating chamber that heats an organic compound containing moisture to generate water vapor and volatile matter, and a capturing means that captures volatile matter generated from the heating chamber. The storage means for temporarily storing the water vapor generated from the heating chamber and supplying the water vapor to the vicinity of the capturing means when necessary, and between the heating chamber and the capturing means, oxygen or air is introduced into the capturing means. It is comprised from the introduction means, and reacts the volatile matter generated from the organic compound with water vapor.

  The reaction heat required at this time is given by oxidizing (combusting) a part of volatile matter. This makes it possible to reduce the external energy consumption without installing a steam generator or the like and to recover the fuel gas containing hydrogen as a main component from the organic compound containing moisture.

  Further, the invention of the organic compound decomposing apparatus according to claim 4 uses a porous oxide as the capturing means in the invention according to claim 3, and has a large specific surface area and the capturing ability of the capturing means is growing. As a result, the oxidation time of volatile matter and the reaction time of water vapor can be extended, the hydrogen (fuel gas) recovery rate from the organic compound can be improved, and the efficiency of the entire system can be improved.

  The invention of the organic compound decomposing apparatus according to claim 5 uses the capturing means in the invention according to claim 3 or 4 having a hydrophobic surface and hardly captures water vapor. For this reason, since the volatile matter can be preferentially captured in an atmosphere where volatile matter and water vapor are mixed, unreacted volatile matter can be reduced, and the energy efficiency of the apparatus can be further improved.

  The invention of the organic compound decomposing apparatus according to claim 6 is a heating chamber composed of a plurality of heating chambers for generating water vapor and volatile matter by heating an organic compound containing moisture, and a volatile matter generated from the heating chamber. A trapping means for trapping, and an introduction means for introducing oxygen or air into the trapping means provided between the heating chamber and the trapping means, and at least one of the heating chambers has a temperature zone suitable for moisture evaporation, and the rest It is the structure which can adjust temperature so that it may become a temperature range suitable for volatilization of a volatile matter.

  In this configuration, the volatile component and water vapor can be continuously supplied to the trapping means, and the remaining volatile component and water vapor are reacted by utilizing oxidation heat generated when a part of the volatile component is oxidized. Further, it is possible to continuously recover the fuel gas containing hydrogen as a main component without providing a steam generator or the like.

  Further, the invention of the organic compound decomposing apparatus according to claim 7 uses a porous oxide for the capturing means in the invention according to claim 6, and has a large specific surface area and the capturing ability of the capturing means is growing. Therefore, the oxidation time of volatile matter and the reaction time with water vapor can be lengthened, and the hydrogen (fuel gas) recovery rate from the organic compound can be improved, so that the energy efficiency of the continuous hydrogen recovery system can be further improved.

  The invention of the organic compound decomposition apparatus according to claim 8 of the present invention uses a hydrophobic surface as the capturing means in the invention according to claim 6 or 7, and the water vapor is hardly present. Do not capture. For this reason, since volatile matter can be preferentially captured in an atmosphere where volatile matter and water vapor are mixed, unreacted volatile matter can be reduced, and the energy efficiency of the apparatus capable of continuously recovering hydrogen gas can be further improved.

  Hereinafter, embodiments of an organic compound decomposition method and decomposition apparatus according to the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a characteristic diagram showing the relationship between temperature and weight change of an organic compound according to Embodiment 1 of the present invention.

  In FIG. 1, when the organic compound is heated, the weight is reduced because the moisture contained in the initial stage (about 473 K or less) evaporates. For example, in food, 70 to 80% is usually moisture, and the weight loss at this stage is remarkable.

  Furthermore, when heated (473 to 673 K), the volatile components begin to volatilize and the weight decreases. This volatile matter is a hydrocarbon such as tar.

  When heating is continued (673 to 973 K), almost no change in weight is observed, but when water vapor coexists, a decrease in weight is recognized again from around 973 K.

This is because carbon and water vapor constituting the organic compound undergo water-gasification reactions represented by the following two formulas.
C + H ₂ O → CO + H ₂
C + 2H ₂ O → CO ₂ + 2H ₂
Since these reactions are endothermic reactions, heat must be applied in some way. As the method, heat obtained by oxidizing (combusting) a part of volatile matter is used. Moreover, the water vapor | steam which is a gasifying agent of water gasification reaction can utilize the water vapor | steam generate | occur | produced in the drying process of an organic compound.

  In addition, if oxidation of volatile matter and reaction of volatile matter and water vapor are performed using porous oxides typified by alumina, volatile matter is trapped on the alumina surface, so the oxidation time and reaction time with water vapor are reduced. Can take longer.

  As described above, in the present embodiment, the heat obtained by heating the organic compound containing moisture to generate water vapor and volatile components and oxidizing a part of the volatile components is used as the reaction heat of the remaining volatile components and water vapor. Use as In this way, a part of the volatile matter is oxidized to generate heat, and the heat is used as the reaction heat of the remaining volatile matter and water vapor. Fuel gas mainly composed of hydrogen can be recovered.

  Moreover, the volatile matter generated from the organic compound is captured and oxidized on the surface of the porous trapping material, and the residence time of the volatile matter can be lengthened. Therefore, sufficient oxidation time and reaction time for reacting with water vapor can be taken, and the decomposition rate of the organic compound can be improved, so that the energy efficiency of the decomposition process can be further improved.

  In the present embodiment, the main component of the fuel gas recovered from the organic compound is hydrogen, but depending on the purpose of use, such as synthesizing methane using the obtained hydrogen and carbon dioxide using a Ni / Zr catalyst or the like. The fuel gas composition can be changed.

(Embodiment 2)
FIG. 2 is a block diagram of an organic compound decomposition apparatus according to Embodiment 2 of the present invention.

  As shown in FIG. 2, the organic compound 21 is assumed to have a high water content such as straw, wood chips, sludge and the like. Usually, their moisture content is 70-80%.

  The heating chamber 22 is a housing having a heat insulating structure and can store the organic compound 21 therein. The first heater 23 is an electric heater that heats the inside of the heating chamber 22 and heats the organic compound 21 at a predetermined temperature.

  The storage unit 24 is a tank that condenses and stores water vapor generated by heating the organic compound 21 in the heating chamber 22. The second heater 25 is a heater that heats the condensed water stored in the storage unit 24 to generate water vapor, and is provided in the storage unit 24.

  The trapping means 26 traps the volatile matter generated in the heating chamber 22 and is a honeycomb structure of porous activated alumina and carries a nickel catalyst on the surface. A porous material such as activated carbon or zeolite may be used instead of activated alumina. Furthermore, a catalyst such as platinum, copper, iron, or radium may be used instead of the nickel catalyst.

  The third heater 27 is an auxiliary heat source that operates when the temperature of the capturing means 26 is low, such as when starting up. The capturing means 26 is fixed inside the cylindrical casing 28. The installation location of the third heater 27 may be inside or outside the casing 28. Since the casing 28 is normally used at a temperature of 1073 K or less, it may be made of stainless steel, but may be made of Inconel or Hastelloy for safety.

  The introduction means 29 is a pipe that penetrates the wall surface of the casing 28 and is disposed on the discharge side on the inside and the suction side on the outside, and introduces oxygen or air from the outside to the vicinity of the capture means 26. The discharge port of the introducing unit 29 is installed so as to be upstream of the capturing unit 26 with respect to the gas flow inside the casing 28. The pump 30 conveys oxygen or air to the introduction means 29 and is provided on the introduction means 29.

  The piping 31 a connects the heating chamber 22 and the storage unit 24, the piping 31 b connects the storage unit 24 and the casing 28, and the piping 31 c connects the heating chamber 22 and the casing 28. The casing 31 side of the pipe 31 c is installed so as to be upstream of the capturing means 26 with respect to the gas flow inside the casing 28. On-off valves 32a and 32b are provided on the pipes 31a and 31b. The exhaust pipe 33 is provided on the downstream side of the casing 28 and exhausts fuel gas such as hydrogen gas generated by the capturing means 26.

  The operation of the organic compound decomposition apparatus configured as described above will be described below.

  First, the inside of the heating chamber 22 is heated to about 393 K by the first heater 23, and the moisture contained in the organic compound 21 is evaporated. At this time, the on-off valve 32a is in an “open” state, and the on-off valve 32b is in a “closed” state.

  Water vapor generated from the organic compound 21 becomes condensed water in the storage means 24 through the pipe 31a. When the drying of the organic compound 21 is completed, the heating chamber 22 is further heated and heated to a maximum of about 1073K. At this time, the on-off valve 32a is in a “closed” state, and the on-off valve 32b is in an “open” state.

  Volatile matter is generated from the organic compound 21 heated to 473K or higher. This volatile matter is supplied into the casing 28 via the pipe 31 c and is captured by the capturing means 26. At this time, the pump 30 is activated and oxygen or air is introduced into the vicinity of the capturing means 26 via the introducing means 29.

  Further, if the volatile matter and oxygen or air supplied from the introducing means 24 are at a temperature equal to or higher than the ignition point of the volatile matter, the volatile matter spontaneously ignites and generates heat. Furthermore, if an ignition plug or the like is provided, it will burn and generate heat even in the temperature range from the flash point to the ignition point. At the same time, the second heater 25 is operated, and water vapor is supplied from the storage unit 24 to the vicinity of the capturing unit 26 through the pipe 31b.

  In this way, a part of the volatile matter is oxidized and exothermic, and this heat is used as heat necessary for the reaction between the remaining volatile matter and water vapor. A gas mainly composed of hydrogen, carbon monoxide, and carbon dioxide generated by the reaction between the volatile component and water vapor is exhausted through the exhaust pipe 33 and used as a fuel gas.

  As described above, in the present embodiment, the heating chamber 22 that heats the organic compound 21 containing moisture to generate water vapor and volatile components, the capturing means 26 that captures the volatile components generated from the heating chamber 22, and heating The storage means 24 for temporarily storing the water vapor generated from the storage 22 and supplying the water vapor to the vicinity of the capture means 26 when necessary, and the heating means 22 and the capture means 26 are provided between the storage means 24 and oxygen or It comprises an introduction means 29 for introducing air, and reacts volatile matter generated from the organic compound 21 with water vapor.

  The reaction heat required at this time is given by oxidizing (combusting) a part of volatile matter. Thus, it is possible to recover the fuel gas mainly composed of hydrogen from the organic compound 21 containing moisture by reducing external energy consumption without installing a steam generator or the like.

  Further, the trapping means 26 is a porous oxide, has a large specific surface area, and the trapping capability of the trapping means 26 is large. Therefore, the oxidation time of volatile matter and the reaction time of water vapor can be extended, the recovery rate of hydrogen (fuel gas) from the organic compound 21 can be improved, and the efficiency of the entire system can be improved.

  The capturing means 26 has a hydrophobic surface and hardly captures water vapor. For this reason, since the volatile matter can be preferentially captured in an atmosphere where volatile matter and water vapor are mixed, unreacted volatile matter can be reduced, and the energy efficiency of the apparatus can be further improved.

  In the present embodiment, electric heaters are used as the first heater 23 and the second heater 25. However, when the amount of heat such as exhaust gas discharged from the exhaust pipe 33 is sufficiently large, a heat exchanger is used. You may install and use as a heat source of the heating chamber 22 or the storage means 24. FIG.

  When the composition of the cracked gas is adjusted and supplied to the micro gas turbine or the fuel cell, it is possible to generate electric power, and the cracked gas can be effectively used.

(Embodiment 3)
FIG. 3 is a configuration diagram of an organic compound decomposition apparatus according to Embodiment 3 of the present invention. Note that description of the same components as those in the second embodiment is omitted.

  As shown in the figure, the first heating chamber 40 is a housing that heats and dries the organic compound 21 containing moisture to about 393K. The first heater 41 is a heat source provided in the first heating chamber.

  The second heating chamber 42 is a housing that heats the dried organic compound 21 to 473 K or more to volatilize volatile components. The second heater 43 is a heat source provided in the second heating chamber.

  The pipe 44 a connects the first heating chamber 40 and the casing 28. The pipe 44 b connects the second heating chamber 42 and the casing 28. The heating chamber 45 includes a first heating chamber 40, a first heater 41, a second heating chamber 42, and a second heater 43.

  The operation of the organic compound decomposition apparatus configured as described above will be described below.

  First, in the first heating chamber 40, the organic compound 21 containing moisture is heated and dried. The water vapor generated at this time is supplied to the capturing means 26 through the pipe 44a. At the same time, in the second heating chamber 42, the dried organic compound 21 is heated at a temperature of 473K or higher, and volatile matter is generated. This volatile component is supplied to the capturing means 26 via the pipe 44b and captured.

  Steam and volatile components can be supplied simultaneously from the heating chamber 45. When the drying of the organic compound 21 is completed in the first heating chamber 40 and the volatilization of the volatile component of the organic compound 21 is completed in the second heating chamber 42, the first heating chamber is heated to 427K or more. Volatilization of the organic compound 21 is started, and the second heating chamber 42 is newly charged with the organic compound 21 and dried at a temperature of about 397K.

  Thus, water vapor and volatile matter are continuously supplied from the heating chamber 45. Further, at this time, the pump 30 is operated, and oxygen or air is introduced into the vicinity of the capturing means 26 through the introducing means 29.

  At this time, if the volatile matter and oxygen or air supplied from the introducing means 24 are at a temperature equal to or higher than the ignition point of the volatile matter, the volatile matter spontaneously ignites and generates heat. Furthermore, if an ignition plug or the like is provided, it will burn and generate heat even in the temperature range from the flash point to the ignition point.

  In this way, a part of the volatile matter is oxidized and exothermic, and this heat is used as heat necessary for the reaction between the remaining volatile matter and water vapor. A gas mainly composed of hydrogen, carbon monoxide, and carbon dioxide generated by the reaction between the volatile component and water vapor is exhausted through the exhaust pipe 33 and used as a fuel gas.

  As mentioned above, in this Embodiment, the organic compound 21 containing a water | moisture content is heated, the heating chamber 40 which consists of several heating chambers which generate | occur | produce water vapor | steam and a volatile matter, and the volatile matter generated from the heating chamber 40 is captured. The trapping means 26 and the introduction means 29 provided between the heating chamber 40 and the trapping means 26 for introducing oxygen or air into the trapping means 26, and at least one of the heating chambers is a temperature zone suitable for moisture evaporation. The temperature can be adjusted so that the remaining temperature is in a temperature range suitable for volatilization of volatile matter.

  In this configuration, the volatile component and the water vapor can be continuously supplied to the trapping means 26, and the remaining volatile component and the water vapor can be reacted by using oxidation heat generated when a part of the volatile component is oxidized. Thus, it is possible to continuously recover the fuel gas containing hydrogen as a main component without providing a steam generator or the like.

  Further, the trapping means 26 is a porous oxide, has a large specific surface area, and the trapping capability of the trapping means 26 is large. Therefore, the oxidation time of volatile matter and the reaction time of water vapor can be extended, the recovery rate of hydrogen (fuel gas) from the organic compound 21 can be improved, and the energy efficiency of a continuous hydrogen recovery system can be improved.

  The capturing means 26 has a hydrophobic surface and hardly captures water vapor. For this reason, since volatile matter can be preferentially captured in an atmosphere where volatile matter and water vapor are mixed, unreacted volatile matter can be reduced, and the energy efficiency of the apparatus capable of continuously recovering hydrogen gas can be further improved.

  The organic compound decomposition method or decomposition apparatus of the present invention can recover a fuel gas mainly composed of hydrogen from an organic compound with a small amount of external energy without installing a steam generator or the like. It can be used for purposes such as treating municipal waste and recovering hydrogen as fuel for fuel cells.

Characteristic diagram of temperature and weight change of organic compound according to embodiment 1 of the present invention The block diagram of the decomposition | disassembly apparatus of the organic compound by Embodiment 2 of this invention The block diagram of the decomposition | disassembly apparatus of the organic compound by Embodiment 3 of this invention System diagram of conventional municipal waste treatment equipment

Explanation of symbols

21 Organic Compound 22 Heating Chamber 24 Storage Unit 26 Capture Unit 29 Introduction Unit 45 Heating Chamber

Claims (8)

  Heating an organic compound containing moisture to generate water vapor and volatile components, and using heat obtained by oxidizing a part of the volatile components as reaction heat of the remaining volatile components and water vapor, To decompose organic compounds.   The method for decomposing an organic compound according to claim 1, wherein the volatile matter generated from the organic compound is captured and oxidized on the surface of the porous capturing material.   Necessary to temporarily store the heating chamber that generates water vapor and volatile matter by heating the organic compound containing moisture, the capturing means for capturing the volatile matter generated from the heating chamber, and the steam generated from the heating chamber A storage means for supplying water vapor to the vicinity of the capture means, and an introduction means for introducing oxygen or air to the capture means, provided between the heating chamber and the capture means. An organic compound decomposition device.   The organic compound decomposition apparatus according to claim 3, wherein the capturing means is a porous oxide.   The organic compound decomposing apparatus according to claim 3 or 4, wherein the capturing means has a hydrophobic surface.   A heating chamber composed of a plurality of heating chambers for generating water vapor and volatile components by heating an organic compound containing moisture, a capturing unit for capturing volatile components generated from the heating chamber, and the heating chamber and the capturing unit And an introduction means for introducing oxygen or air into the trapping means. At least one of the heating chambers is in a temperature zone suitable for moisture evaporation, and the rest is in a temperature zone suitable for volatilization of volatile matter. An organic compound decomposition apparatus characterized in that the temperature can be adjusted as described above.   The organic compound decomposition apparatus according to claim 6, wherein the capturing means is a porous oxide.   The organic compound decomposing apparatus according to claim 6 or 7, wherein the capturing means has a hydrophobic surface.

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