Organic matter combustible gasification apparatus, power generation apparatus using this combustible gasification apparatus, and method for producing combustible gas using this combustible gasification apparatus

Abstract

The present invention provides a compact and efficient combustible gasification device capable of converting organic matter into combustible gas, a power generation device equipped with this combustible gasification device, and a method for producing combustible gas using this combustible gasification device. [Solution] A combustible gasification device and a gas power generation unit are mounted on the back of a truck, and the combustible gas obtained from the combustible gasification device is supplied to the gas power generation unit to generate electricity. The superheated steam generation unit 11 and the reaction vessel 12 of the combustible gasification device are installed in a single heating furnace 13, and the superheated steam generated in the superheated steam generation unit 11 by the heat of the heating furnace 13 is put into the reaction vessel 13 into which a material containing organic matter is introduced to decompose the organic matter in the material and obtain combustible gas. Furthermore, the superheated steam generators 11a and 11b that constitute the superheated steam generation unit 11 have a structure in which porous ceramic pellets are filled in a staggered pattern inside the outer cylinder.

Description

Technical Field

[0001] The present invention relates to, for example, a combustible gasification apparatus capable of efficiently combustibly gasifying organic substances contained in waste, a power generation apparatus using this combustible gasification apparatus, and a method for producing combustible gas using this combustible gasification apparatus.

Background Art

[0002] In the current society, it has become a one-way flow from manufacturing to disposal as waste such as garbage after use, and has not reached a recycling society where most products, including plastics, can be efficiently recycled. In the case of combustible waste, incineration is inevitable, and the current situation is that sufficient effective utilization has not been achieved.

[0003] Moreover, recently, disasters due to earthquakes, disasters due to the occurrence of huge typhoons, and disasters due to heavy rain have occurred frequently. When the above disasters occur, in the disaster area, in addition to the above normal waste, a large amount of disaster waste is generated as waste due to the collapse of houses and flood damage, and it cannot be processed immediately at the waste treatment facilities of local governments in the disaster area.

[0004] Therefore, the inventors of the present invention have already proposed an apparatus (see Patent Document 1) that exposes organic substances such as plastics to a superheated steam atmosphere to decompose the organic substances to obtain product gases such as hydrogen, carbon monoxide, methane, ethylene, and carbon dioxide, and brought it into the disaster area, etc., to decompose the organic substances in the waste, reduce the amount of waste, and considered whether the combustible gas components in the above product gas can be used as fuel in the disaster area.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in the case of the previously proposed combustible gasification device for organic matter, it was found that the equipment for exposing the organic matter to superheated steam was large, making it difficult to transport to disaster areas, and that the efficiency of generating combustible gas was insufficient. In view of the above circumstances, the present invention aims to provide a compact and efficient combustible gasification device capable of converting organic matter into combustible gas, a power generation device equipped with this combustible gasification device, and a method for producing combustible gas using this combustible gasification device. [Means for solving the problem]

[0007] To achieve the above objective, the combustible gasification apparatus for organic matter according to the present invention (hereinafter referred to as the combustible gasification apparatus of the present invention) has a reaction vessel in which a material to be treated, consisting of at least one of a material to be treated containing organic matter, its pulverized or molten form, and a mixture thereof, is contained, and a gas containing combustible gas obtained by decomposing the organic matter in the material to be treated by supplying superheated steam to the reaction vessel is discharged from the gas outlet of the reaction vessel, and comprises a superheated steam generating unit for supplying superheated steam to the reaction vessel and a heating furnace, wherein the superheated steam generating unit comprises a superheated steam generator and a water supply channel for supplying water to the superheated steam generator, and The superheated steam generator has a superheated steam supply passage that discharges the superheated steam generated in the superheated steam generator and supplies the discharged superheated steam to the reaction vessel, and the superheated steam generator has an outer cylinder made of a heat-conducting material and at least one generator body which is filled in the outer cylinder and has a number of heat transfer elements that form a zigzag flow path within the outer cylinder, the superheated steam supply passage is connected to the outer cylinder of the downstream generator body, and a water supply passage to the superheated steam generator is connected to the outer cylinder of the upstream generator body, and the reaction vessel and the superheated steam generator are heated in the heating furnace.

[0008] The combustible gasification apparatus of the present invention is not particularly limited, but preferably includes, for example, a melting tank for storing the material to be processed in a molten state, a processed material supply device for supplying the processed material from the melting tank to the reaction vessel, a residue discharge passage for discharging the residue of the processed material accumulated in the reaction vessel from the reaction vessel to the outside of the heating furnace, a condensation and removal device for condensing and removing water vapor, including superheated water vapor, from the gas discharged from the gas outlet of the reaction vessel, and a combustible gas tank for compressing and storing the combustible gas obtained by removing the water vapor from the gas using the condensation and removal device. In other words, the condensation removal device allows for the acquisition of dry combustible gas, improving combustion efficiency, and by storing compressed combustible gas in the combustible gas tank, the required storage space for the combustible gas can be reduced. (Please add any other effects or benefits.)

[0009] The heat transfer element used in the combustible gasification apparatus of the present invention is filled inside the outer cylinder in such a way that it forms a zigzag water or steam flow path within the outer cylinder in order to increase the contact area of ​​water or steam with the heat transfer element. The heat transfer material is not particularly limited as long as it allows heat from the heating furnace to be easily transferred through the outer cylinder, is durable under high temperature conditions, and is water-resistant. Examples include metal plates, metal spheres, or porous versions thereof, porous ceramic plates, porous ceramic pellets, and porous ceramic spheres. A porous material is preferred because it allows for a larger contact area. The porous ceramics mentioned above are not particularly limited, but examples include those manufactured using the method described in Japanese Patent Publication No. 3988030, which can be obtained by a combustion synthesis reaction of a molded body formed from a mixed powder of titanium and carbon, or a mixed powder of nickel and aluminum.

[0010] The heating furnace used in the combustible gasification apparatus of the present invention may be either a gas furnace or an electric furnace.

[0011] The power generation device of the present invention comprises the combustible gasification device of the present invention described above and a generator that generates electricity by the combustion of the combustible gas obtained by the combustible gasification device, and is characterized in that the combustible gasification device and the generator are mounted on a single trolley having wheels.

[0012] The present invention's method for producing combustible gas is characterized by controlling the superheated steam temperature in the reaction vessel of the combustible gasification apparatus of the present invention to 250 to 1400°C, and it is preferable to control it to 700 to 900°C if the goal is to obtain a product gas containing a large amount of methane gas in the combustible gas.

[0013] In the present invention, the material to be treated is not particularly limited as long as it contains organic matter, but examples include plastic products such as PET containers and polyethylene bags, FRP products, and solar panels. [Effects of the Invention]

[0014] The present invention is a combustible gasification apparatus for organic matter, comprising a reaction vessel containing a material to be treated which includes organic matter, its pulverized or molten form, and mixtures thereof, and wherein superheated steam is supplied to the reaction vessel to decompose the organic matter in the material to be treated, and the gas containing combustible gas obtained is discharged from the gas outlet of the reaction vessel, the apparatus comprising a superheated steam generating unit that supplies superheated steam to the reaction vessel and a heating furnace, wherein the superheated steam generating unit comprises a superheated steam generator, a water supply channel that supplies water to the superheated steam generator, and a port that discharges the superheated steam generated in the superheated steam generator and the discharged superheated steam is discharged from the reaction vessel The system has a superheated steam supply passage for supplying superheated steam to the reaction vessel, and the superheated steam generator has at least one generator body having an outer cylinder made of a heat-conductive material and porous ceramic pellets filled inside the outer cylinder, the superheated steam supply passage is connected to the outer cylinder of the downstream generator body, and a water supply passage to the superheated steam generator is connected to the outer cylinder of the upstream generator body, and the reaction vessel and the superheated steam generator are heated in the heating furnace, so that the reaction vessel and the superheated steam generator can be superheated by a single heating furnace, thus reducing heat loss and making the entire apparatus compact.

[0015] As described above, the power generation device of the present invention comprises a combustible gasification device and a generator that generates electricity by the combustion of the combustible gas obtained by the combustible gasification device. Since the combustible gasification device and the generator are mounted on a single cart with wheels, transportation is easy, and for example, it is possible to supply electricity to a disaster-stricken area while simultaneously processing disaster waste in the disaster-stricken area.

[0016] The present invention provides a method for producing combustible gas, which controls the superheated steam temperature in the reaction vessel of the combustible gasification apparatus of the present invention to 250 to 1400°C, thereby enabling the production of combustible gas from organic matter. In particular, when controlled to 700 to 900°C, methane gas, which has a higher calorific value than hydrogen gas, can be efficiently extracted as a combustible gas. [Brief explanation of the drawing]

[0017] [Figure 1] This is a diagram schematically showing a first embodiment of the power generation device of the present invention. [Figure 2] This is a schematic system diagram of the combustible gasification device of the power generation device in FIG. 1. [Figure 3] This is a schematic system diagram of the gas storage part of the power generation device in FIG. 1. [Figure 4] This is a schematic system diagram of the gas power generation unit of the power generation device in FIG. 1. [Figure 5] This is a schematic diagram schematically showing the internal structure of the superheated steam generator of the power generation device in FIG. 1.

Embodiments for Carrying Out the Invention

[0018] Hereinafter, the present invention will be described in detail while referring to the drawings showing its embodiments. FIG. 1 shows one embodiment of the combustible gasification device of the present invention and the power generation device of the present invention using this combustible gasification device.

[0019] As shown in FIG. 1, this power generation device A has a combustible gasification device 1 of the present invention, a gas power generation unit 2, and a control panel 3 mounted on a loading platform 41 of a truck 4 as a trolley. As shown in FIG. 2 or FIG. 3, the combustible gasification device 1 includes a superheated steam generation part 11, a reaction kettle 12, a heating furnace 13, a processed material supply part 14, and a gas storage part 15.

[0020] The superheated steam generation part 11 includes two superheated steam generators 11a, 11b, a water supply line 11c, and a superheated steam supply line 11d. As shown in FIG. 2, the two superheated steam generators 11a, 11b are housed in a heating furnace 13 to be described later, and as shown in FIG. 5, each includes an outer cylinder part 111 and a large number of porous ceramic pellets 112 housed in this outer cylinder part 111, and the outer cylinder parts 111 are connected in series by a connecting pipe 113.

[0021] The outer cylinder portion 111 is made of a metal material, such as stainless steel, which is a highly heat-conductive material that can withstand high temperatures of 1200°C or higher. When using porous ceramic pellets 112, for example, the porous ceramic pellets 112 can be obtained by mixing titanium powder and carbon powder, or by combustion synthesis reaction of a molded body formed from a mixture of nickel and aluminum powder. The porous ceramic pellets 112 obtained in this way have numerous continuous pores. Then, as shown in Figure 5, the porous ceramic pellets 112 are stacked in a staggered pattern within the outer cylinder portion 111. Furthermore, if the porous ceramic pellets 112 are cylindrical in shape, for example, with a diameter of 10 to 30 mm and a height of 10 to 50 mm, it is preferable to stack them so that the relative density is approximately 40 to 60%.

[0022] Furthermore, the porous ceramic pellet 112 is heated by the heating furnace 13, and its temperature is raised to a temperature close to that of the outer cylinder 111. Furthermore, in the superheated steam generators 11a and 11b, water or steam that enters the outer cylinder portion 111 passes through the porous ceramic pellets 112 in a zigzag pattern.

[0023] The water supply channel 11c is provided to penetrate the reaction vessel 12, with one end connected to the outer cylinder portion 111 of one of the superheated steam generators 11a inside the reaction vessel 12, and the other end connected to a water supply pipe or the like outside the reaction vessel 12. The superheated steam supply passage 11d is provided to connect the outer cylinder portion 111 of the other superheated steam generator 11b with the reaction vessel 12, so that the superheated steam generated by the superheated steam generator 11b can be supplied into the reaction vessel 12.

[0024] The reaction vessel 12 is made of a metal material that can withstand temperatures of 1200°C or higher, such as stainless steel, and is equipped with a material input passage 12a, a residue discharge section 12b, and a generated gas discharge passage 12c, with the majority of the vessel facing the residue discharge section 12b being housed inside the heating furnace 13. The residue discharge section 12b is designed to allow reaction residue accumulated at the bottom of the reaction vessel 12 to be discharged outside the reaction vessel 12 by a screw. The generated gas discharge passage 12c is provided to penetrate the heating furnace 13, and allows the gas containing combustible gas generated when organic matter in the material being processed is decomposed by superheated steam in the reaction vessel 12, along with excess superheated steam and steam, to be sent to the condenser 15a shown in Figure 3, which is located outside the heating furnace 13 and will be described later.

[0025] The heating furnace 13 has walls 13c formed using a stainless steel frame and alumina-based ceramic refractory bricks / rock wool boards (calcium silicate-based), and the inside of the furnace can be heated to a predetermined temperature by a gas burner 13a. Although not shown in the diagram, the gas burner 13a is designed to burn gas supplied from a propane gas cylinder loaded on the cargo bed 41 and blow flames into the furnace.

[0026] The processing material supply unit 14 includes a processing material input tank 14a, a processing material supply feeder 14b, a melting tank 14c, a melted processing material supply feeder 14d, and a nitrogen tank 14e. The material input tank 14a comprises a tank body 141 having an upper opening that serves as the material input port, and a lid 142 that can close the upper opening of the tank body 141 in an airtight manner.

[0027] The tank body 141 is equipped with a stirrer 143 that has stirring blades, and has a discharge port 144 at its bottom. Furthermore, the tank body 141 is connected to a branch pipe 11e located in the middle of the superheated steam supply passage 11d, allowing superheated steam to be supplied to the inside via the branch pipe 11e. The agitator 143 is designed to melt the material X that has been put into the tank body 141 while stirring it.

[0028] The processed material supply feeder 14b is configured to supply the molten processed material in the tank body 141 to the molten tank 14c, and is equipped with a gate valve 145 between it and the molten tank 14c. The melting tank 14c is equipped with a jacket 146 and is configured to maintain the molten material supplied from the material feeder 14b in a desired molten state while stirring it.

[0029] Furthermore, the melting tank 14c is equipped with a nitrogen gas supply from the nitrogen tank 14e, and although not shown in the diagram, it also has a safety valve. The molten material supply feeder 14d is equipped with a heat-insulating jacket 147 and is capable of supplying the molten material in the molten tank 14c to the reaction vessel 12 via the material input passage 12a.

[0030] The material input passage 12a is inserted through a through hole 13b provided in the wall of the heating furnace 13, and is equipped with a fire-resistant insulation layer 121 made of rock wool to fill the gap with the through hole 13b.

[0031] As shown in Figure 3, the gas storage unit 15 includes a condenser 15a, a water separation tank 15b, a water recovery tank 15c, a buffer tank 15d, a booster pump 15e, a main gas production tank 15f, and a regulator 15g. The condenser 15a is designed to condense the superheated steam and steam contained in the product gas generated in the reaction vessel 12.

[0032] The water separation tank 15b separates the water produced by condensation at the outlet of the condenser 15a from the remaining gas and sends the gas to the buffer tank 15d. The buffer tank 15d is designed to temporarily store the gas sent from the water separation tank 15b.

[0033] The booster pump 15e pressurizes the gas stored in the buffer tank 15d to a pressure higher than the combustion pressure required by the gas generator 21 of the gas power generation unit 2 (described later), and then sends this pressurized gas to the main gas generation tank 15f. The main gas tank 15f is designed to store pressurized gas and is connected to the gas generator 21 of the gas power generation unit 2 shown in Figure 4 via a regulator 15g that adjusts the pressure of the pressurized gas to a predetermined pressure.

[0034] As shown in Figure 4, the gas power generation unit 2 includes a gas generator 21, an AC / DC converter 22, a storage battery 23, and a transformer 24. The gas generator 21 is a gas engine generator that can generate electricity using a combustible gas (hydrogen gas, carbon monoxide gas, methane gas, etc.) in a pressurized gas supplied via a regulator 15g.

[0035] The AC / DC converter 22 converts the electricity generated by the gas generator 21 from alternating current to direct current. The storage battery 23 is a lithium-ion battery and is designed to store the DC electricity converted by the AC / DC converter 22. The transformer 24 transforms the electricity stored in the battery 23 to a voltage suitable for the electrical equipment being used, and also converts it between DC and AC as needed. The electricity transformed by the transformer 24 is then sent to each evacuation center or nearby homes H via the cable 25. The electricity stored in the battery 23 may also be used to control the power generation device A. The control panel 3 incorporates an AC / DC converter 22, a storage battery 23, and a transformer 24, and is equipped with control buttons for the combustible gasification device 1 and the gas power generation unit 2.

[0036] Next, we will explain in detail an example of the operation and usage of this power generation device A. (1) Power generator A is moved by truck 4 to a place to process materials in the disaster area (for example, the disaster area). (2) Upon arrival at the processing location, the heating furnace 13 is heated to an internal temperature of 700-900°C by igniting the gas burner 13a. This heating maintains the superheated steam generator 11 and the reaction vessel 12 at a temperature of 700-900°C. (3) The water supply channel 11c is connected to a water supply or a water supply pump (not shown) of a water supply tank, and water is supplied to the superheated steam generation unit 11 via the water supply channel 11c. The supplied water first enters one of the superheated steam generators 11a, where it becomes almost superheated steam, and then passes through the connecting pipe 113 to the other superheated steam generator 11b, where it becomes completely superheated steam, and is sent to the reaction vessel 12 via the superheated steam supply channel 11d. (4) After opening the lid 142 of the material input tank 14a and putting the desired amount of material X (for example, plastic waste generated in disaster-stricken areas, etc.) into the tank body, the lid 142 is closed and the material is stirred with the agitator 143 to melt the material. If necessary, superheated steam generated in the superheated steam generator 11 may be supplied to the material input tank 14a via the branch pipe 11e to heat the material and accelerate its dissolution. (5) The material that has melted in the material input tank 14a is sent to the melting tank 14c from the discharge port 144 by the material supply feeder 14b. Nitrogen is supplied into the melting tank 14c from the nitrogen tank 14e, creating a non-oxidizing atmosphere inside the melting tank 14c and preventing the combustion of organic matter. (6) The molten material supplied to the melting tank 14c is heated to 200-300°C (400°C depending on the type of organic material) while being stirred within the melting tank 14c. (7) The heated molten material in the molten tank 14c is supplied to the reactor 12 via the molten material supply feeder 14d and the material input passage 12a. In the reactor 12, the organic matter in the molten material is decomposed by superheated steam, producing combustible gases such as methane, carbon monoxide, and hydrogen, as well as product gases including carbon dioxide. At this time, the reactor 12 is maintained at a temperature of 700-900°C, so methane is the main combustible gas produced. Incidentally, if the temperature exceeds 1000°C, hydrogen will be the main gas produced. (8) The gas generated in the reaction vessel 12, containing superheated steam and steam, is sent to the condenser 15a, where the superheated steam and steam are condensed, and then sent to the water separation tank 15b, where it is separated into a product gas containing combustible gas and water. (9) The generated gas separated in the water separation tank 15b is temporarily stored in the buffer tank 15d, then pressurized to, for example, 0.001 MPa to 5 MPa by the booster pump 15e, and then stored in the generated gas main tank 15f. (10) The pressurized generated gas stored in the main generated gas tank 15f is adjusted to a stable gas pressure by the regulator 15g and then sent to the gas generator 21 for use in generating electricity. (11) The electricity generated by the gas generator 21 is converted to direct current by the AC / DC converter 22 and then stored in the battery 23. (12) The electricity stored in the battery 23 is transformed or substituted by the transformer 24 and sent to each evacuation center or nearby home H via the cable 25. (13) If necessary, any undecomposed inorganic materials and residues such as tar remaining in the reaction vessel 12 are discharged from the residue discharge section 12b.

[0037] As described above, the combustible gasification apparatus 1 is designed to have a superheated steam generation unit 11 and a reaction vessel 12 within a single heating furnace 13, making the combustible gasification apparatus 1 compact and providing good thermal efficiency. Furthermore, since the superheated steam obtained from the superheated steam generation unit 11 is supplied to the material input tank 14a from the branch pipe 11e, the material X in the material input tank 14a can be quickly melted.

[0038] As described above, this power generation device A, consisting of a combustible gasification device 1, a gas power generation unit 2, and a control panel 3, is mounted on the cargo bed 41 of a truck 4 that serves as a trolley. Therefore, it can be quickly transported to disaster areas, easily extract combustible gas from organic waste to reduce the amount of waste, and generate electricity using the generated combustible gas to supply power to where it is needed. Furthermore, by controlling the internal temperature of the heating furnace 13 to 700-900°C, a large amount of methane gas, which has a higher calorific value than hydrogen when it comes to combustion, can be obtained as a combustible gas and effectively utilized as a heat source in disaster-stricken areas.

[0039] The present invention is not limited to the embodiments described above. For example, in the above embodiments, the temperature inside the heating furnace was set to 700-900°C to increase the amount of methane gas in the generated gas, but if the temperature is set to 1000°C or higher, the generated gas will contain a large amount of hydrogen gas. In other words, the temperature of the heating furnace should be changed depending on the type of combustible gas to be obtained. In the above embodiment, the molten material was introduced into the reaction vessel, but the crushed material in a solid state may also be introduced into the reaction vessel, or waste materials may be introduced directly into the reaction vessel.

[0040] In the above embodiment, the superheated steam generation unit consisted of two superheated steam generators connected in series. However, as long as superheated steam can be obtained, one superheated steam generator is sufficient, or three or more superheated steam generators may be connected, or superheated steam generators may be installed in parallel. In the above embodiment, the power generation device was movable while mounted on the back of a truck, but it may also be permanently installed on the premises of a factory or other facility where a large amount of plastic waste is generated, or only the gasification device may be permanently installed on the premises of a factory or other facility, and the resulting combustible gas may be used as fuel.

[0041] In the above embodiment, the electricity from the storage battery was sent to the place of use via a cable, but it is also acceptable to provide multiple storage batteries that can be attached and detached, and to remove the storage batteries and transport them to the place of use. [Explanation of Symbols]

[0042] A power generation device 1. Gasification device 11 Superheated steam generation unit 11a, 11b Superheated steam generator 11c Water supply channel 11d Superheated steam supply path 11e Branch pipe 111 Outer cylinder 112 Porous ceramic pellets 113 Connecting pipe 12 Reaction vessel 12a Processing material input path 12b Residue discharge section 121 Fire-resistant and heat-insulating layer 13 Heating furnace 13a gas burner 13b Through hole 13c wall 14. Processing Material Supply Unit 14a Processing material input tank 14b Material supply feeder 14c melting tank 14d. Molten material supply feeder 14e Nitrogen Tank 141 Tank body 142 Lid 143 Agitator 144 Outlet 145 Gate valve 146 Jacket 147 Insulated Jacket 15 Gas storage section 15a Condenser 15b Water separation tank 15c Water Recovery Tank 15d Buffer Tank 15e Booster Pump 15f Main tank for generated gas 15g regulator 2 Gas power generation units 21 Gas generator 22 AC / DC Converters 23 Storage batteries 24 Transformers 25 Cables 3. Control Panel 4 tracks 41 Cargo bed X processed product H Neighboring households

Claims

1. A reaction vessel containing a material to be treated that includes organic matter, a pulverized or molten material thereof, and a mixture thereof, is provided. This is an organic matter combustible gasification apparatus that supplies superheated steam to a reaction vessel to decompose organic matter in the material being processed, and discharges the resulting gas containing combustible gas from the gas outlet of the reaction vessel. The system comprises a superheated steam generating unit that supplies superheated steam to the reaction vessel, and a heating furnace. This superheated steam generating unit includes a superheated steam generator, a water supply channel for supplying water to the superheated steam generator, and a superheated steam supply channel for discharging the superheated steam generated by the superheated steam generator and supplying the discharged superheated steam to the reaction vessel. The superheated steam generator comprises an outer cylinder made of a heat-conductive material and at least one generator body filled in the outer cylinder, having numerous heat transfer elements that form a zigzag flow path within the outer cylinder, the superheated steam supply passage being connected to the outer cylinder of the downstream generator body, and the water supply passage to the superheated steam generator being connected to the outer cylinder of the upstream generator body. A combustible gasification apparatus for organic matter, characterized in that the reaction vessel and the superheated steam generator are heated within the heating furnace.

2. A processing supply device having a melting tank for storing the material to be processed in a molten state, and supplying the processing material from the melting tank to the reaction vessel, A residue discharge channel for discharging the residue of the processed material accumulated in the reaction vessel from the reaction vessel to the outside of the heating furnace, A condensation and removal device for condensing and removing water vapor, including superheated water vapor, in the gas discharged from the gas outlet of the reaction vessel, The combustible gasification apparatus according to claim 1, further comprising a combustible gas tank for compressing and storing the combustible gas obtained by removing the water vapor from the gas using the condensation removal device.

3. A combustible gasification apparatus according to claim 1 or claim 2, and a generator that generates electricity by combustion of the combustible gas obtained by the combustible gasification apparatus, A power generation device characterized in that the aforementioned combustible gasification device and generator are mounted on a single trolley having wheels.

4. A method for producing combustible gas, comprising controlling the superheated steam temperature in the reaction vessel of the combustible gasification apparatus according to claim 1 or claim 2 to 250 to 1400°C.

5. The method for producing a combustible gas according to claim 4, wherein the heated steam temperature is controlled to 700 to 900°C.

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