WO2021084942A1 - 多孔質物質の乾燥装置及びこれを備えた水素製造装置並びに多孔質物質の乾燥方法 - Google Patents
多孔質物質の乾燥装置及びこれを備えた水素製造装置並びに多孔質物質の乾燥方法 Download PDFInfo
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- WO2021084942A1 WO2021084942A1 PCT/JP2020/034665 JP2020034665W WO2021084942A1 WO 2021084942 A1 WO2021084942 A1 WO 2021084942A1 JP 2020034665 W JP2020034665 W JP 2020034665W WO 2021084942 A1 WO2021084942 A1 WO 2021084942A1
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- Prior art keywords
- porous substance
- hydrogen
- drying
- lignite
- hydrogen production
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- 239000000126 substance Substances 0.000 title claims abstract description 62
- 238000001035 drying Methods 0.000 title claims abstract description 50
- 229910052739 hydrogen Inorganic materials 0.000 title claims description 105
- 239000001257 hydrogen Substances 0.000 title claims description 105
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims description 82
- 238000004519 manufacturing process Methods 0.000 title claims description 33
- 238000000034 method Methods 0.000 title claims description 8
- 238000000855 fermentation Methods 0.000 claims abstract description 60
- 230000004151 fermentation Effects 0.000 claims abstract description 60
- 244000005700 microbiome Species 0.000 claims abstract description 52
- 239000011148 porous material Substances 0.000 claims abstract description 21
- 239000003077 lignite Substances 0.000 claims description 106
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 239000007789 gas Substances 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 39
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 31
- 239000001569 carbon dioxide Substances 0.000 claims description 31
- 238000002309 gasification Methods 0.000 claims description 28
- 150000002431 hydrogen Chemical class 0.000 claims description 23
- 238000000926 separation method Methods 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 9
- 238000000746 purification Methods 0.000 claims description 7
- 239000003245 coal Substances 0.000 description 25
- 238000003756 stirring Methods 0.000 description 21
- 238000010438 heat treatment Methods 0.000 description 19
- 239000000498 cooling water Substances 0.000 description 16
- 238000001816 cooling Methods 0.000 description 13
- 238000005065 mining Methods 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 239000003610 charcoal Substances 0.000 description 10
- 238000011084 recovery Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 239000000567 combustion gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 4
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 239000002802 bituminous coal Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
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- 239000006096 absorbing agent Substances 0.000 description 2
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- 238000010000 carbonizing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000007602 hot air drying Methods 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000235042 Millerozyma farinosa Species 0.000 description 1
- 241000191940 Staphylococcus Species 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
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- OXNIZHLAWKMVMX-UHFFFAOYSA-M picrate anion Chemical compound [O-]C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O OXNIZHLAWKMVMX-UHFFFAOYSA-M 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/52—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with liquids; Regeneration of used liquids
- C01B3/54—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with liquids; Regeneration of used liquids including a catalytic reaction
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/56—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M1/00—Apparatus for enzymology or microbiology
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M1/00—Apparatus for enzymology or microbiology
- C12M1/02—Apparatus for enzymology or microbiology with agitation means; with heat exchange means
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P3/00—Preparation of elements or inorganic compounds except carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
- F26B11/14—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a horizontal or slightly-inclined plane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
- F26B11/16—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a vertical or steeply-inclined plane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/005—Drying-steam generating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
- F26B25/006—Separating volatiles, e.g. recovering solvents from dryer exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
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- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
- F26B3/22—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source and the materials or objects to be dried being in relative motion, e.g. of vibration
- F26B3/24—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source and the materials or objects to be dried being in relative motion, e.g. of vibration the movement being rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
Definitions
- the present invention relates to a drying device for a porous substance such as lignite and activated carbon, a hydrogen production device equipped with the drying device, and a method for drying the porous substance.
- lignite which is a porous substance, has a low carbon content and a large amount of water, so its power generation efficiency is not as good as that of bituminous coal used for thermal power generation. For this reason, it was used only for power generation in the vicinity of coal mines, but recently, a technology for producing hydrogen by gasifying lignite is being developed. In this hydrogen production technology, lignite is dried in advance and put into a gasification furnace. Then, in this drying treatment of lignite, conventionally, hot air drying or drying using a carbonization device is performed.
- the applicant of the present application is efficient by first storing the organic waste in a closed container such as a tank and stirring it while heating it to a predetermined temperature range under reduced pressure, as described in Patent Document 1, for example.
- a patent application has been filed for a vacuum fermentation dryer capable of removing water and drying the waste, and adding a predetermined microorganism to the organic waste to be treated in this way to promote fermentation of the organic matter.
- the present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to dry a porous substance such as brown charcoal containing a large amount of water without generating a combustion gas. It is an object of the present invention to provide a drying apparatus for a porous substance capable of sufficiently drying up to the central portion of the above, a hydrogen producing apparatus using the same, and a method for drying the porous substance.
- the present invention constitutes means for solving the above-mentioned problems as follows. That is, in the porous substance drying apparatus of the present invention, the porous substance containing water is housed in a closed container, the porous substance is stirred while being heated to a predetermined temperature range under reduced pressure, and the microorganisms are mixed. It is characterized by being provided with a vacuum fermentation dryer which is put into a closed container, the microorganism is allowed to enter the pores of the porous substance, and the water content of the porous substance is evaporated by the fermentation heat of the microorganism to dry it. To do.
- a porous substance in a closed container of a vacuum fermentation dryer, a porous substance is initially fermented in a state where microorganisms have entered a large number of pores on the surface portion of the porous substance, and the fermentation thereof is performed.
- the heat evaporates the water around it.
- the microorganisms enter the pores on the central side of the porous substance from the surface portion and ferment, and the heat of fermentation repeatedly evaporates the water existing around the porous substance, and finally the porous substance.
- the water present in the central part of the microorganism evaporates due to the heat of fermentation of microorganisms. Therefore, it is possible to sufficiently dry the central portion of the porous substance without generating combustion gas as in the conventional case.
- the porous substance is preferably lignite. According to this configuration, it is possible to obtain lignite sufficiently dried up to the central portion as a raw material for hydrogen production.
- the hydrogen production apparatus of the present invention gasifies the dried brown coal obtained by the drying apparatus for brown coal, which is the porous substance, and the vacuum fermentation dryer of the drying apparatus, and contains carbon monoxide and hydrogen as main components. It is characterized by being equipped with a gasifier that produces gas to be produced.
- lignite sufficiently dried to the central portion contains extremely small amount of water, generates a large amount of heat, and becomes hot at the time of heating. Therefore, the lignite can be efficiently gasified and carbon monoxide can be converted from lignite. A mixed gas containing carbon and hydrogen can be satisfactorily produced.
- a gas purification device that removes impurities contained in the gas generated by the gasification device.
- a carbon dioxide separation device that shifts carbon monoxide in the gas from which impurities have been removed by the gas purification device to generate carbon dioxide and separates the carbon dioxide from the hydrogen.
- the present invention it is preferable to further include a storage device for storing liquid hydrogen obtained by liquefying hydrogen separated from carbon dioxide by the carbon dioxide separation device.
- a storage device for storing liquid hydrogen obtained by liquefying hydrogen separated from carbon dioxide by the carbon dioxide separation device According to this configuration, the produced hydrogen is stored as liquid hydrogen, so that hydrogen can be stored efficiently and in a small space.
- the carbon dioxide separated by the carbon dioxide separation device is contained in the stratum on land or the seabed. According to this configuration, carbon dioxide separated during hydrogen production from lignite can be contained in the strata of depleted gas fields and oil fields to effectively utilize carbon dioxide, which is substantially carbon dioxide. Can be eliminated.
- a transport engine for transporting the liquid hydrogen stored in the storage device to a predetermined location. According to this configuration, it is possible to transport liquid hydrogen to an area or country far away from the lignite mining site and use the liquid hydrogen for manufacturing fuel cells, for example, in those areas or countries.
- a porous substance containing water is housed in a closed container, the porous substance is stirred while being heated to a predetermined temperature range under reduced pressure, and a microorganism is put into the closed container to cause the microorganism.
- It is a method for drying a porous substance which comprises a vacuum fermentation drying step of allowing the porous substance to enter the pores and evaporating the water content of the porous substance by the heat of fermentation of the microorganism to dry the porous substance. , The same effect as the drying device for the porous substance can be expected.
- the hydrogen production apparatus provided with the apparatus for drying a porous substance, and the method for drying a porous substance, a porous substance sufficiently dried to the central portion can be obtained by utilizing the fermentation heat of microorganisms. be able to. Further, if the porous substance is lignite, the lignite that has been sufficiently dried up to its central portion becomes hot at the time of heating, and the reaction rate of gasification becomes fast, so that hydrogen can be efficiently produced. Fuel cells and the like can be manufactured using the produced hydrogen.
- FIG. 1 is a block diagram showing an overall configuration of a hydrogen production apparatus provided with a vacuum fermentation dryer as a lignite drying apparatus.
- FIG. 2 is a diagram schematically showing a schematic configuration of the vacuum fermentation dryer.
- FIG. 3 shows the progress of drying of lignite when the lignite is dried using the vacuum fermentation dryer,
- FIG. 3A shows the state before the drying treatment, and
- FIG. 3B shows the surface of lignite.
- the figure (c) shows the state where only the part is dried, the figure (c) shows the state where about half of the surface part to the center part of the lignite is dried, and the figure (d) shows the state where the lignite is dried to the vicinity of the center.
- FIG. 4 is a schematic configuration diagram showing a configuration of a gasifier provided in a hydrogen production apparatus and its surroundings.
- FIG. 5 shows the degree of drying of lignite when it is dried by a conventional method
- FIG. 5A shows a state before the drying treatment
- FIG. 5B shows a state after the drying is completed.
- FIG. 1 is a block diagram showing the overall configuration of a hydrogen production device equipped with a vacuum fermentation dryer as a lignite drying device.
- the hydrogen production apparatus 1 shown in FIG. 1 includes a vacuum fermentation dryer 3 that dries brown coal, which is a porous substance, as a source of hydrogen.
- the configuration of the vacuum fermentation dryer 3 is known as described in, for example, Patent Document 1, and the object to be treated is stirred while being heated to a predetermined temperature range under reduced pressure, and fermentation of microorganisms is performed.
- the object to be treated is dried using the above, and a dried product having a reduced volume is obtained.
- the vacuum fermentation dryer 3 includes a substantially cylindrical pressure-resistant tank 30 formed airtightly so as to keep the inside at atmospheric pressure or lower, as schematically shown in FIG.
- the tank 30 is a closed container for accommodating a processing object to be charged from the charging port 30a, that is, brown charcoal which is a porous substance.
- a heating jacket 31 is provided on the peripheral wall portion of the tank 30, and heating steam is supplied to the heating jacket 31 from the steam control device 92.
- the heating steam of the steam circulation path 92a is a heating jacket. It circulates through 31 and becomes drain water, which is collected by the steam control device 92.
- the temperature of the steam supplied from the steam control device 92 is preferably, for example, about 140 ° C.
- a stirring shaft 32 extending in the longitudinal direction (left-right direction in FIG. 2) is provided inside the tank 30 so as to be surrounded by the heating jacket 31.
- the stirring shaft 32 is rotated at a predetermined rotation speed by the electric motor 32a.
- the stirring shaft 32 is provided with a plurality of stirring plates 32b spaced apart from each other in the axial direction, and the brown charcoal is stirred by these stirring plates 32b, and a dried product fermented and dried from the brown charcoal (described later).
- the pulverized lignite 48) is fed in the longitudinal direction of the tank 30.
- a lignite charging port 30a is provided on the upper side of the longitudinal side of the tank 30, and the lignite charged from the charging port 30a is agitated by the rotation of the stirring shaft 32 while being heated by the heating jacket 31. To. Then, after a lapse of a predetermined time, the treated dried product (pulverized charcoal 48) is discharged from the discharge port 30b provided in the lower part of the tank 30.
- a hydraulic motor may be used instead of the electric motor 32a.
- a guide portion 30c that guides steam generated from heated lignite to the condensing portion 33 is projected above the tank 30.
- two guide portions 30c are provided, and the guide portions 30c are arranged at a predetermined distance in the longitudinal direction of the tank 30.
- a plurality of cooling pipes 33b supported by a pair of heads 33a are provided inside the condensing portion 33 supported by the connecting path 34 via the guide portion 30c, and the plurality of cooling pipes 33b and the cooling tower
- a cooling water path 38a is provided between the 38 and the cooling water path 38a.
- the condensing portion 33 extends in parallel along the longitudinal direction of the tank 30 and is arranged on the rear side of the guide portion 30c.
- the cooling water that circulates in the cooling pipe 33b in the condensing portion 33 and whose temperature rises due to heat exchange with the high-temperature steam circulates in the cooling water path 38a as schematically shown by an arrow in FIG. 2 and flows through the cooling tower. It flows into the water receiving tank 38b of 38.
- the cooling tower 38 is provided with a pump 38c for pumping cooling water from the water receiving tank 38b and a nozzle 38d for injecting the pumped cooling water.
- the cooling water injected from the nozzle 38d receives air from the fan 38f while flowing down the lower stream 38e, the temperature drops, and the cooling water flows into the water receiving tank 38b again.
- the cooling water cooled by the cooling tower 38 is sent by the cooling water pump 38g, sent to the condensing portion 33 by the cooling water path 38a, and circulates in the plurality of cooling pipes 33b again. Then, after the temperature rises due to heat exchange with the steam generated inside the tank 30 as described above, it flows through the cooling water path 38a again and flows into the water receiving tank 38b of the cooling tower 38. That is, the cooling water circulates in the cooling water path 38a between the condensing portion 33 and the cooling tower 38.
- condensed water in which steam generated from heated lignite is condensed in the condensing portion 33 is also injected.
- condensed water generated by heat exchange with high-temperature steam is collected below the condensing portion 33.
- a vacuum pump 36 is connected to the condensing portion 33 via a communication passage 35 to reduce the pressure in the tank 30. That is, by the operation of the vacuum pump 36, air and condensed water are sucked out from the condensing portion 33 through the communication passage 35, and further, air and steam in the tank 30 are sucked out through the connecting path 34 and the guide portion 30c. .. In this way, the condensed water is sucked out from the condensing portion 33 to the vacuum pump 36, and is guided from the vacuum pump 36 to the water receiving tank 38b of the cooling tower 38 by the water pipe.
- An opening / closing valve 30d is provided in the connection path 34 so that air or the like is not sucked from the inside of the vacuum fermentation dryer 3 when the vacuum fermentation dryer 3 is stopped. Further, although not shown, an atmospheric release valve for opening the inside of the tank 30 to the atmosphere is arranged in the vicinity of the vacuum pump 36.
- the condensed water led to the water receiving tank 38b of the cooling tower 38 is mixed with the cooling water, pumped into the pump 38c as described above, injected from the nozzle 38d, and then cooled while flowing down the lower stream 38e. ..
- the condensed water contains the same microorganisms as those added to the lignite in the tank 30, and the odorous components and the like contained in the condensed water are decomposed, so that the odor is emitted to the outside of the tank 30. It is designed not to.
- the brown coal contained in the tank 30 is agitated as the stirring shaft 32 rotates while being heated by the heating steam supplied to the heating jacket 31 in a state where the microorganisms described later are added. Then, the brown coal contained in the tank 30 is effectively heated and heated by receiving the heating from the outside by the heating jacket 31 surrounding the inside of the tank 30 and the heating from the inside by the stirring shaft 32 or the like. At the same time, the lignite is stirred by the stirring shaft 32.
- the added microorganisms enter the pores of the lignite and ferment the organic substances contained in the lignite, the dead microorganisms (organic substances) and a part of the water in the lignite as a nutrient source, and the heat of fermentation causes the fermentation heat.
- the water content of the lignite is repeatedly evaporated, and the lignite is sufficiently dried to the central part.
- the pressure in the tank 30 is reduced by the operation of the vacuum pump 36, the boiling point in the tank 30 is lowered, the evaporation of the water contained in the lignite due to the heat of fermentation is accelerated, and the drying of the lignite is promoted. Since the water content of the lignite that has been sufficiently dried to the central portion has almost disappeared, the amount of heat generated is high and the lignite becomes a high temperature when heated.
- one step (1 cycle) is preferably, for example, 3 hours.
- the lignite is charged over 30 minutes, and the lignite passes through the pores of the lignite over 2 hours.
- a drying step of drying the lignite to the central part by the fermentation heat of the microorganisms is provided.
- the lignite is crushed by the stirring plate 32b, and the crushed coals collide with each other to make fine particles. It is crushed and discharged from the discharge port 30b as finely crushed charcoal over another 30 minutes.
- the water temperature in the tank 30 is maintained at 76 to 69 ° C. (saturated steam temperature).
- microorganisms are actively active in this temperature range.
- lignite is fermented and dried by microorganisms described later.
- a plurality of types of indigenous bacteria are used as a base, and the microorganisms are cultured in advance.
- the complex effective microorganism group is preferable, and the so-called SHIMOSE 1/2/3 group is the center of the colony.
- SHIMOSE1 was sent to FERM BP-7504 (Ministry of Economy, Trade and Industry, National Institute of Advanced Industrial Science and Technology, National Institute of Advanced Industrial Science and Technology, Patent Microorganisms Depositary Center (1-1-3 Higashi, Tsukuba City, Ibaraki Prefecture, Japan), March 14, 2003. It was deposited internationally in Japan).
- SHIMOSE2 is a microorganism belonging to FERMBP-7505 (which was deposited internationally like SHIMOSE1) and Pichiafarinosa, which has salt resistance
- SHIMOSE3 is a microorganism belonging to FERMBP-7506 (SHIMOSE1). Similarly, it is a microorganism belonging to Staphylococcus (which was deposited internationally).
- lignite is charged into the inlet 30a of the tank 30 of the vacuum fermentation dryer 3. Then, the inside of the tank 30 is sealed in an atmospheric pressure state.
- the atmosphere opening valve provided in the vicinity of the vacuum pump 36 is closed to seal the inside of the tank 30. Then, heating steam is supplied from the steam control device 92 described later, and the inside of the tank 30 is heated under reduced pressure.
- the inside of the tank 30 is heated by the steam for heating, and the inside of the tank 30 is operated by the operation of the vacuum pump 36 while rotating the stirring shaft 32 at a predetermined rotation speed (for example, about 8 rpm) to stir the lignite.
- a predetermined rotation speed for example, about 8 rpm
- the rotation speed (8 rpm) of the stirring shaft 32 is an example, and may be another value as long as the organic matter can be decomposed.
- FIG. 3A shows the state before the lignite 40 is added.
- the water content is shaded and shown, and the water content is distributed throughout the lignite 40.
- FIG. 3B microorganisms enter the pores 40a on the surface portion of the lignite 40, metabolize the organic matter of the lignite 40 and a part of the surrounding water as a nutrient source to ferment, and the heat of fermentation is used to ferment the surface of the lignite 40.
- the water in the part is evaporating.
- the pores 40a are schematically shown in FIG. 3, innumerable pores 40a are present inside the lignite 40.
- the microorganism further enters the pores 40a from the surface portion to the central portion of the lignite 40, and metabolizes the organic matter of the lignite 40, the dead microorganism (organic matter), and a part of the surrounding water as a nutrient source.
- the fermentation heat evaporates the water existing on the inner side (central part side) of the surface part of the lignite 40, and about half of the surface part to the central part of the lignite 40 is dried. It has become.
- the microorganism further advances in the pores 40a and reaches the vicinity of the central portion of the lignite 40, and in the vicinity of the central portion, the organic matter of the lignite 40, the dead microorganisms, and a part of the surrounding water are used as a nutrient source. It is metabolized and fermented, and the heat of fermentation evaporates the water present in the vicinity of the central portion of the lignite 40. Then, in FIG. 3E, the microorganism further advances in the pores 40a and ferments in the central portion of the lignite 40 in the same manner as described above, and the heat of fermentation also evaporates the water present in the central portion of the lignite 40.
- the lignite 40 put into the tank 30 is fermented while the microorganisms enter the pores 40a from the surface portion and proceed toward the central portion, and the water content of the lignite 40 is removed by the fermentation heat. Gradually and gradually evaporating from the surface portion to the central portion is repeated, and finally, the water content is sufficiently evaporated to the central portion of the lignite 40 and dried to obtain the finely pulverized coal 48. Will be.
- the charged brown coal 40 is dried to the central portion and finely pulverized to become the finely pulverized coal 48, after which the vacuum is applied.
- the supply of heating steam from the pump 36 and the steam control device 92 is stopped, and the atmosphere release valve is opened to bring the atmospheric pressure into an atmospheric pressure state.
- the stirring shaft 32 is rotated in the reverse direction, the lid of the discharge port 30b of the tank 30 is opened, and the dried product from the tank 30, that is, the brown charcoal (finely pulverized charcoal 48) that has been sufficiently dried and finely pulverized to the central portion. Discharge.
- the internal configuration of the gasifier 50 is shown in FIG.
- the figure is a block diagram showing a schematic concept of the inside of the gasifier 50.
- the gasification furnace 50 has a gasification chamber 51 inside, and an upper burner 52a and a lower burner 52b are provided on the upper side and the lower side of the gasification chamber 51, and these burners.
- the 52a and 52b each have a two-stage configuration in which the pulverized coal 48 and the oxygen 49 as an oxidizing agent (gasifying agent) are supplied.
- the pulverized coal 48 and oxygen 49 have a jet bed type configuration in which they are supplied to the upper and lower burners 52a and 52b and then heated in the gasification chamber 51 while being given a swirling flow. Due to this swirling flow, the pulverized coal 48 has a long residence time in the gasification chamber 51, the gasification reaction is promoted, and high gasification efficiency can be obtained.
- the ratio of oxygen supplied to the upper burner 52a and the lower burner 52b is set low on the upper burner 52a side and high on the lower burner 52b side.
- the temperature is high in the upper portion of the gasification chamber 51 (for example, about 1600 ° C.) and somewhat lower in the lower portion (for example, 1200 ° C.).
- the pulverized coal 48 reacts with oxygen (gasifying agent) 49 to generate carbon dioxide CO 2 and water vapor H 2 O gas.
- pulverized coal 48 and oxygen (gasifying agent) 49 are supplied and burned, further heated to a high temperature, and under the gasification chamber 51 under this high temperature heating.
- Carbon dioxide CO 2 and water vapor H 2 O generated in the side portion rise to the upper portion of the gasification chamber 51 and are thermally decomposed to generate gas of carbon monoxide CO and hydrogen H 2.
- Carbon monoxide CO and hydrogen H 2 in the generated gas are taken out upward from the outlet 50a at the upper end by riding on the ascending stream, and then cooled by a gas cooler (not shown). Further, the generated slag is discharged from the lower end portion and stored in the discharge container 55 (see FIG. 1).
- the gas including a gasifier carbon monoxide CO and hydrogen H 2 produced in 50 is cooled from the outlet 50a is supplied to the gas cooler and is then supplied to the gas purification unit 70.
- the gas purifier 70 impurities other than the main components of the product gas, for example to remove such sulfur compounds (hydrogen sulphide H 2 S and carbonyl sulfide COS).
- it mainly has a COS converter and an H 2 S absorber for removing hydrogen sulfide H 2 S.
- the COS transducer converts carbonyl sulfide COS to hydrogen sulfide H 2 S by a catalytic reaction.
- the H 2 S absorber stores an alkaline solution such as an amine solution as an absorbing liquid, and allows the generated gas to pass through the alkaline solution to absorb hydrogen sulfide H 2 S.
- alkaline solution such as an amine solution as an absorbing liquid
- Other configurations are well known and will be omitted.
- the gas from which the impurities have been removed is then supplied to the CO 2 separation / recovery device 75.
- the CO 2 separation / recovery device (carbon dioxide separation device) 75 causes a shift reaction to convert carbon monoxide CO from which impurities have been removed into carbon dioxide CO 2 , and then separates carbon dioxide CO 2 from the gas. And collect it.
- the CO 2 separation / recovery device 75 is a membrane separation type that separates carbon dioxide CO 2 and hydrogen H 2 using a ceramic film or the like.
- a pipeline (not shown) is connected to the CO 2 separation / recovery device 75, and this pipeline communicates with the stratum of a depleted oil field or gas field on land or sea floor, and this oil field or gas The separated carbon dioxide CO 2 is transported to the field and contained in the strata of this oil field and gas field. Furthermore, it is also possible to resupply oil and gas from the oil and gas fields that have been revived by the supply of carbon dioxide CO 2 in this way.
- the CO 2 separation / recovery device 75 only hydrogen H 2 is obtained by separating and recovering carbon dioxide CO 2 , and this hydrogen H 2 is supplied to the hydrogen liquefier 79.
- Hydrogen liquefier 79 is to liquefy the supplied hydrogen H 2 is converted to liquid hydrogen LH 2, stores the liquid hydrogen LH 2 liquid hydrogen tank (mining areas) of brown coal mining areas to 80.
- the liquid hydrogen tank (mining site) (storage device) 80 has a heat insulating property that suppresses evaporation of liquid hydrogen LH 2.
- Liquid hydrogen LH 2 is hundreds of times more volumetrically efficient than hydrogen H 2 in atmospheric pressure. Therefore, by converting hydrogen H 2 into liquid hydrogen LH 2 and storing it in the liquid hydrogen tank (mining site) 80 in this way, it is possible to store hydrogen H 2 on a small scale.
- the liquid hydrogen LH 2 stored in the liquid hydrogen tank (mining site) 80 is transported by the liquid hydrogen carrier 85.
- the liquid hydrogen carrier (transportation engine) 85 transports the liquid hydrogen LH 2 to other regions, countries, etc. across the sea. For example, when brown coal is mined in a coal mine area of a predetermined country, hydrogen H 2 is produced from brown coal using this hydrogen production device 1 in this designated country and stored in a liquid hydrogen tank (mining site) 80. Later, the liquid hydrogen LH 2 in the liquid hydrogen tank 80 (mining site) is transported to another country, which is the country where the hydrogen H 2 is used, by using the liquid hydrogen carrier 85. When transporting liquid hydrogen LH 2 from land to land in a predetermined country, a vehicle is used instead of the liquid hydrogen carrier 85.
- the liquid hydrogen LH 2 transported by the liquid hydrogen carrier 85 is stored in, for example, a liquid hydrogen tank (other country) 90 of another country installed in another country different from the lignite mining site.
- the liquid hydrogen LH 2 stored in the liquid hydrogen tank (other country) 90 is transported to a predetermined place in other countries for the production of, for example, a fuel cell, if necessary.
- lignite 40 is used as the porous material, the lignite 40 is put into the tank 30 of the vacuum fermentation dryer 3, and the lignite 40 is stirred while stirring the lignite 40 in the tank 30.
- Microorganisms were allowed to enter the pores, and the brown coal 40 was sufficiently dried to the central portion by the fermentation heat of the microorganisms to obtain finely pulverized coal 48.
- the brown coal 40 before the drying treatment shown in FIG. 5A is dried with hot air, it burns. Therefore, when it is dried so as not to burn, the surface of the brown coal 40 is shown in FIG. 5B. As a result, only the portion is dried, and a large amount of water is still present on the central side of the surface portion.
- the extracted hydrogen H 2 is liquefied by the hydrogen liquefier 79 and stored in the liquid hydrogen tank (mining site) 80 as liquid hydrogen LH 2 having high volume efficiency, so that the storage scale of hydrogen H 2 is reduced. It is possible to do.
- liquid hydrogen LH 2 stored in the liquid hydrogen tank (mining site) 80 can be transported to hydrogen-using countries in other countries by the liquid hydrogen carrier 85, Japan can manufacture fuel cells and the like at low cost as a hydrogen-using country. Becomes possible.
- brown charcoal was charged and stored in the vacuum fermentation dryer 3, but the vacuum fermentation dryer 3 as a drying device for the porous substance contained water in addition to brown charcoal as the porous substance.
- a porous substance such as activated carbon or coffee slag and dry the activated carbon or the like.
- activated carbon containing water if the vacuum fermentation dryer 3 is used, it is not necessary to use a combustion device for regeneration.
- the gasification furnace 50 of the hydrogen production apparatus 1 uses a fluidized bed type configuration, but other types, for example, pulverized coal 48 is charged from the upper end of the gasification furnace.
- a fixed bed type gasification furnace that supplies an oxidizing agent such as oxygen from the lower end of the gasification furnace is used, or a fluidized bed type gasification furnace that gasifies the pulverized coal 48 by fluidizing it with air or the like. May be used.
- the present invention can be used for a drying device for a porous substance such as lignite, a hydrogen production device equipped with the drying device, and a method for drying the porous substance.
- Hydrogen production equipment 3 Decompression fermentation dryer 30 Tank (closed container) 40 Lignite (porous material) 48 Milled coal 50 Gasifier (gasifier) 70 Gas purification equipment 75 CO 2 separation / recovery equipment (carbon dioxide separation equipment) 79 Hydrogen liquefier 80 Liquid hydrogen tank (mining site) (storage device) 85 Liquid hydrogen carrier (transportation engine)
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Abstract
Description
図1において、減圧発酵乾燥機3は、多孔質物質として褐炭が投入口30aから内部に投入される。この投入口30aから投入される褐炭は、瀝青炭に比べて、石炭化度が低く、炭素含有量も少ない一方、水分含有量が30~60%と多く、発電効率が悪いため、未利用資源として残る場合が多いものである。
図1の水素製造装置1において、減圧発酵乾燥機3で得られた微粉砕炭48は、ガス化炉(ガス化装置)50に供給される。
3 減圧発酵乾燥機
30 タンク(密閉容器)
40 褐炭(多孔質物質)
48 微粉砕炭
50 ガス化炉(ガス化装置)
70 ガス精製装置
75 CO2分離・回収装置(二酸化炭素分離装置)
79 水素液化機
80 液体水素タンク(採掘地)(貯留装置)
85 液体水素運搬船(運搬機関)
Claims (9)
- 水分を含んだ多孔質物質を密閉容器に収容し、該多孔質物質を減圧下において所定の温度範囲に加熱しながら撹拌するとともに、
微生物を前記密閉容器に投入し、該微生物を前記多孔質物質の細孔に入り込ませて、該微生物の発酵熱によって前記多孔質物質の水分を蒸発させて乾燥する減圧発酵乾燥機を備えた
ことを特徴とする多孔質物質の乾燥装置。 - 請求項1に記載の多孔質物質の乾燥装置において、
前記多孔質物質は褐炭である
ことを特徴とする多孔質物質の乾燥装置。 - 請求項2に記載の多孔質物質の乾燥装置と、
前記乾燥装置の減圧発酵乾燥機により得られた乾燥した褐炭をガス化し、一酸化炭素と水素を主成分とするガスを生成するガス化装置とを備えた
ことを特徴とする水素製造装置。 - 請求項3に記載の水素製造装置において、
前記ガス化装置により生成されたガスに含まれる不純物を除去するガス精製装置を備えた
ことを特徴とする水素製造装置。 - 請求項4に記載の水素製造装置において、
前記ガス精製装置により不純物を除去されたガス中の一酸化炭素をシフト反応して二酸化炭素を生成し、該二酸化炭素を前記水素から分離する二酸化炭素分離装置を備えた
ことを特徴とする水素製造装置。 - 請求項5に記載の水素製造装置において、
前記二酸化炭素分離装置により二酸化炭素と分離された水素を液化した液体水素を貯留する貯留装置を備えた
ことを特徴とする水素製造装置。 - 請求項5又は6に記載の水素製造装置において、
前記二酸化炭素分離装置により分離された二酸化炭素は、陸又は海底の地層中に封じ込められる
ことを特徴とする水素製造装置。 - 請求項6に記載の水素製造装置において、
前記貯留装置に貯留された液体水素を所定場所に運搬する運搬機関を備えた
ことを特徴とする水素製造装置。 - 水分を含んだ多孔質物質を密閉容器に収容し、該多孔質物質を減圧下において所定の温度範囲に加熱しながら撹拌するとともに、
微生物を前記密閉容器に投入し、該微生物を前記多孔質物質の細孔に入り込ませて、該微生物の発酵熱によって前記多孔質物質の水分を蒸発させて乾燥する減圧発酵乾燥工程を備えた
ことを特徴とする多孔質物質の乾燥方法。
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AU2020376194A AU2020376194B2 (en) | 2019-10-31 | 2020-09-14 | Drying device for porous substance, hydrogen production device comprising same, and method for drying porous substance |
US17/769,488 US20240230224A9 (en) | 2019-10-31 | 2020-09-14 | Drying apparatus of porous material, hydrogen production system including the same, and method for drying porous material |
CN202080054877.2A CN114207371B (zh) | 2019-10-31 | 2020-09-14 | 多孔质物质的干燥装置、具备该干燥装置的氢制造装置以及多孔质物质的干燥方法 |
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